CN119321663A - Pneumatic drying equipment and tobacco production system - Google Patents

Abstract

The application provides an air flow drying device and a tobacco production system. The air flow drying device comprises a roller which is rotatably arranged around a central axis of the roller and is provided with an opening, wherein the opening is arranged at a first end of the roller and is used for enabling materials to flow out of the roller, the roller is arranged in an up-and-down swinging way and swings downwards when the materials flow out, so that the opening faces downwards, and a hot air applying mechanism which is communicated with the interior of the roller and is used for introducing hot air into the roller to dry the materials in the roller. In this way, the drying effect can be improved.

Description

Pneumatic drying equipment and tobacco production system

Technical Field

The application relates to the technical field of pneumatic drying, in particular to pneumatic drying equipment and a tobacco production system.

Background

The air flow drying equipment utilizes air flow to suspend and heat the materials, and the moisture in the materials is quickly vaporized in a convection heat transfer mode, so that the materials are dried. Because of the characteristics of high efficiency, continuity, easy control and the like, pneumatic drying equipment is widely applied in a plurality of industrial fields.

Traditional pneumatic drying equipment, its cylinder is one end feeding generally, and the other end ejection of compact, and the cylinder is along ejection of compact direction downward sloping for the material reaches the discharge gate along with the cylinder rotates, carries out the ejection of compact, under this kind of circumstances, is difficult to effectively adjust heating time, influences drying effect.

Disclosure of Invention

The application aims to solve the technical problem of improving the drying effect of pneumatic drying equipment.

In order to solve the above technical problems, the present application provides an air flow drying apparatus, comprising:

A drum rotatably disposed around its central axis and having an opening provided at a first end thereof for allowing the material to flow out of the drum, the drum being swingably disposed up and down and swinging down with the opening facing down when the material flows out, and

And the hot air applying mechanism is communicated with the interior of the roller so as to introduce hot air into the roller and dry the materials in the roller.

In some embodiments, the openings are also used for feeding material into the drum, and/or the drum is kept horizontal during the drying of the material after feeding to before discharging, and/or the flow area of the portion of the drum adjacent to the openings is gradually reduced in the direction of the material flowing out of the drum.

In some embodiments, the drum is kept horizontal or swung upward with the opening facing upward as the material enters.

In some embodiments, the air drying apparatus further comprises a swing drive mechanism that drives the drum to swing up and down, and/or the air drying apparatus further comprises a stop that limits axial displacement of the drum.

In some embodiments, the pneumatic drying apparatus includes a support member on which the drum is rotatably disposed about its central axis, the support member being swingably disposed up and down, a swing driving mechanism driving the drum to swing up and down by driving the support member to swing up and down, and/or the swing driving mechanism includes a linear motor.

In some embodiments, the hot air applying mechanism comprises a hot air supply mechanism and an air outlet shaft, the hot air supply mechanism is communicated with the air outlet shaft so as to introduce hot air into the air outlet shaft, the air outlet shaft extends into the roller, and an air outlet hole is formed in the side wall of the air outlet shaft so that the hot air introduced into the air outlet shaft flows into the roller through the air outlet hole.

In some embodiments, the air outlet shaft is configured to at least one of:

the air outlet shaft is coaxially arranged with the roller;

The air outlet shaft is rotatably arranged;

The side wall of the air outlet shaft is provided with a plurality of air outlet holes which are arranged at intervals along the axial direction and/or the circumferential direction of the air outlet shaft;

approach of air-out shaft one end of the opening is closed;

one end of the air outlet shaft far away from the opening is communicated with the hot air supply mechanism.

In some embodiments, the air-out shaft rotates in synchronization with the drum, and/or the air-drying apparatus includes a rotary joint through which the hot air supply mechanism communicates with the rotatably disposed air-out shaft.

In some embodiments, the hot air supply mechanism comprises a hot air pipe, a heat exchanger and a fan, wherein the hot air pipe is connected with the heat exchanger and the air outlet shaft, and the heat exchanger is connected with the fan so that air driven by the fan flows through the heat exchanger, is heated by working media in the heat exchanger and flows into the air outlet shaft through the hot air pipe.

In some embodiments, the fan has a fresh air inlet to drive fresh air to the heat exchanger, and/or the hot air supply mechanism further includes a return air duct connected to the fan and in communication with the opening such that air flowing from the opening is driven by the fan to flow to the heat exchanger.

In addition, the application also provides a tobacco production system comprising the pneumatic drying apparatus of any of the embodiments.

In some embodiments, the pneumatic drying apparatus dries the filter rod particulate functional material.

By constructing the drum to be swingable up and down and to swing down to the opening for discharging when the material flows out, flexible adjustment of the heating time can be conveniently realized, and thus, the drying effect can be effectively improved.

Other features of the present application and its advantages will become apparent from the following detailed description of exemplary embodiments of the application, which proceeds with reference to the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a front view of an air drying apparatus in accordance with an embodiment of the present application.

Fig. 2 is a side view of an air drying apparatus in an embodiment of the application.

Reference numerals illustrate:

10. an air flow drying device;

1. the device comprises a roller, a first end, a second end, an opening, a shoveling plate, a guide rail and a lifting plate, wherein the roller is provided with the first end, the second end and the first end;

2. A discharge cover;

3. A hot air applying mechanism; 31, a hot air pipe, 32, a heat exchanger, 33, a fan, 34, a return air pipe, 35, a hot air supply mechanism, 36, an air outlet shaft, 37, an air outlet hole, 38, a connecting rod, 39 and a rotary joint;

4. A moisture removing mechanism; 41, a moisture removing cover, 42, a moisture removing pipe;

5. A support device; 51, supporting pieces, 52, riding wheels, 53, limiting pieces, 54, bearing seats, 55, rotating shafts, 56 and brackets;

6. a rotary drive mechanism 61, a rotary drive motor;

7. And 71, a swinging driving mechanism and a linear motor.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be made by one of ordinary skill in the art without undue burden on the person of ordinary skill in the art based on embodiments of the present application, are within the scope of the present application.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

In the description of the present application, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, and are merely for convenience of describing the present application and simplifying the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of the present application, and the azimuth terms "inside and outside" refer to inside and outside with respect to the outline of each component itself.

In the description of the present application, it should be understood that the terms "first," "second," and the like are used for defining the components, and are merely for convenience in distinguishing the corresponding components, and the terms are not meant to have any special meaning unless otherwise indicated, so that the scope of the present application is not to be construed as being limited.

In the present application, unless otherwise indicated, "plurality" means at least two, i.e., including two and at least three cases.

In addition, the technical features of the different embodiments of the present application described below may be combined with each other as long as they do not collide with each other.

The drum of pneumatic drying equipment is fed from one end, the other end is discharged, and under the condition that the drum is wholly inclined downwards along the discharging direction, after the material enters the drum, the material flows to the discharging port along with the rotation of the drum, flows out of the discharging port, and in the corresponding process, the material can reach the discharging port relatively fast, so that the material stays in the drum for a relatively short time, the heated air heating time is short, and the drying effect is poor.

In the related art, the heating time of the material is usually adjusted by adopting modes of adjusting the temperature of the roller, adjusting the rotating speed of the roller, changing the length of the roller and the like, but the effects of the modes are limited. For example, when the roller temperature is adjusted, the original properties of the material may be damaged due to the random temperature change, so that the adjustable temperature range is limited, the material heating time is difficult to effectively adjust, and the drying effect is difficult to effectively improve. For another example, when the rotation speed of the drum is regulated, the frequency of the rotation driving mechanism for driving the rolling rotation has a regulating range, and the rotation speed affects the throwing effect of the material, if the rotation speed is too low, the material cannot be thrown in the drum, the heating uniformity is affected, and if the rotation speed is too high, the heating time is shortened, so that the heating time of the material is difficult to effectively regulate, and the drying effect is difficult to effectively improve. For example, when the drum length is changed, the drum length cannot be too long due to the influence of factors such as manufacturing cost, field size, difficulty in installation and the like, and is limited by the structure, the drum length is difficult to adjust on site, but cannot be adjusted after being manufactured, so that the material heating time is difficult to effectively adjust, and the drying effect is difficult to effectively improve.

Therefore, how to effectively adjust the material heating time, and further improve the drying effect of the pneumatic drying device is a difficult problem.

In view of the above, the present application improves the structure of the pneumatic drying apparatus.

Fig. 1 to 2 exemplarily show the structure of the pneumatic drying apparatus in the present application.

Referring to fig. 1 to 2, in the present application, the pneumatic drying apparatus 10 includes a drum 1 and a hot air applying mechanism 3. The hot air applying mechanism 3 is communicated with the interior of the roller 1 so as to introduce hot air into the roller 1 and dry the materials in the roller 1. The drum 1 is rotatably arranged around its central axis and has an opening 13, the opening 13 being arranged at the first end 11 of the drum 1 and being intended for the material to flow out of the drum 1, and the drum 1 being arranged swingably up and down and swinging down when the material flows out, so that the opening 13 faces down.

In the above scheme, the roller 1 is not fed at one end and discharged at the other end, and the roller is integrally arranged in a manner of tilting downwards along the discharging direction, but the roller 1 is arranged in a manner of swinging downwards and swinging downwards when the material flows out, so that the opening 13 of the roller 1 for discharging is downward, and therefore, the material can not flow out of the other end of the roller directly after feeding, but only flows out of the roller 1 when the roller 1 swings downwards to the opening 13 downwards, therefore, the discharging time can be controlled by controlling whether the roller 1 swings downwards to the opening 13 downwards, and further, the residence time of the material in the roller 1 is controlled, namely, the heating time of the material is controlled, flexible adjustment of the heating time is realized, the drying process requirement is effectively met, and the drying effect can be effectively improved.

Compared with the mode of adjusting the heating time by adjusting the temperature of the roller, the rotating speed of the roller and the length of the roller, the heating time is adjusted by controlling whether the roller 1 swings downwards to the opening 13 to be downwards, so that the method is simpler and more convenient, and the limitation of the temperature of the roller, the rotating speed of the roller and the length of the roller can be avoided, therefore, the heating time can be adjusted more effectively, and the drying effect can be improved more effectively. Of course, the drum temperature, drum rotation speed and drum length may be adjusted to further improve the drying effect while controlling whether the drum 1 swings down to the opening 13 down to adjust the heating time.

It can be seen that by constructing the drum 1 to be swingable up and down and to swing down to the opening 13 for discharging when the material flows out, flexible adjustment of the heating time can be conveniently achieved, and thus, the drying effect can be effectively improved.

Moreover, the drum 1 swings downwards to the opening 13 for discharging when the material flows out downwards, so that the material can flow out of the drum 1 rapidly under the action of gravity, and the discharging is conveniently realized, so that the discharging speed is also improved, the working efficiency of the pneumatic drying equipment 10 is further effectively improved, and the production beat is accelerated.

It can be seen that, through constructing cylinder 1 as can swing from top to bottom to down to opening 13 that is used for the ejection of compact is down when the material flows, not only can conveniently realize the nimble regulation to heating time, effectively improves the drying effect of pneumatic drying equipment 10, can realize quick ejection of compact moreover, effectively improves the work efficiency of pneumatic drying equipment 10, accelerates the takt.

It will be appreciated that the drum 1 swings down to the opening 13 for discharge being directed downwards when the material is flowing out, meaning that the drum 1 does not swing down to the opening 13 being directed downwards when not discharging, but rather remains horizontal or inclined upwards with the opening 13 being directed upwards. For example, referring to fig. 1, in some embodiments, drum 1 is maintained horizontal during material drying from after feeding to before discharging. Like this, compare with the circumstances that cylinder 1 opening 13 is upwards in the drying process, both when conveniently needing the ejection of compact, control cylinder 1 is swung downwards, carries out the ejection of compact, can prevent again that the material from piling up in the air current drying process at the second end 12 relative with first end 11 of cylinder 1, and the convenience material is rotated along with cylinder 1 and fully shed in cylinder 1 in the air current drying process, contacts with hot-blast, realizes better drying effect.

In the embodiments described above, the drum 1 may be fed from the second end 12 of the drum 1, in which case the drum 1 is fed from one end and the other end, or the drum 1 may be fed from the opening 13, in which case the opening 13 is used not only for discharging but also for feeding, the material flows out of the drum 1 through the opening 13 and also into the drum 1 through the opening 13, and the drum 1 is not fed from one end but from the other end, but from the same end. Wherein, compare with the circumstances that opening 13 only is used for the ejection of compact, is not used for the feeding, cylinder 1 one end feeding, the other end ejection of compact, opening 13 both is used for the ejection of compact, also is used for the feeding, and when cylinder 1 same end business turn over was out, the material business turn over all is via same opening 13, is favorable to prolonging the flow path of material, increases the heating time of material, consequently, is favorable to improving drying effect more. Moreover, the material inlet and outlet are naturally not simultaneously carried out under the condition of the same opening 13, that is, the material is not discharged during feeding and the material is not fed during discharging, so that the material is not required to be considered during feeding, the material is not required to be considered during discharging, the heating time is more conveniently adjusted by controlling the roller 1 to swing downwards to the opening 13 downwards when the material flows out, and the problem that the material flows out accidentally can not occur even if the roller 1 swings upwards to the upward feed inlet during feeding, so that the material is more conveniently fed.

In the case of openings 13 for both discharge and feed, drum 1 may be kept horizontal as material enters, or may be swung upwards so that openings 13 face upwards. The cylinder 1 keeps the level or upwards swings when the material gets into and makes opening 13 upwards, and these two modes all can be convenient realize feeding process, but compare with cylinder 1 when the material gets into and keep the level the condition, cylinder 1 upwards swings when making opening 13 upwards when the material gets into, and the material that adds via opening 13 can get into in cylinder 1 fast under the action of gravity, therefore, more convenient feeding can improve feeding efficiency, quickens production beat.

In the foregoing embodiments, the flow area of the portion of the drum 1 adjacent to the opening 13 may be gradually reduced in the direction in which the material flows out of the drum 1. Like this, the part of cylinder 1 with opening 13 adjacency is gradually reduced along the ejection of compact direction, can play the effect of gathering to the material in ejection of compact in-process, more makes things convenient for the quick discharge of material, realizes efficient ejection of compact process. Moreover, when the opening 13 is used not only for discharging but also for feeding, the portion of the drum 1 adjacent to the opening 13 tapers in the discharging direction, meaning that the portion of the drum 1 adjacent to the opening 13 tapers in the feeding direction, that is, the flow area of the portion of the drum 1 adjacent to the opening 13 gradually increases in the direction in which the material flows into the drum 1, so that it is possible to prevent the material from being blocked at the opening 13 during feeding, and thus it is advantageous to achieve a smoother and more efficient feeding process. It can be seen that the flow area of the portion of the drum 1 adjacent to the opening 13 gradually decreases along the direction in which the material flows out of the drum 1, which is convenient for not only discharging, but also feeding in the case where the opening 13 is simultaneously used for feeding, which is advantageous for improving the working efficiency of the pneumatic drying apparatus 10 and accelerating the tact time.

As a further improvement to the previous embodiments, referring to fig. 1 and 2, in some embodiments, the pneumatic drying apparatus 10 further includes a swing driving mechanism 7, and the swing driving mechanism 7 drives the drum 1 to swing up and down. Like this, cylinder 1 can be under the drive of swing actuating mechanism 7, and automatic oscilaltion is for the condition of manual realization cylinder 1 oscilaltion, labour saving and time saving more, and efficiency is higher, and control is more accurate, is favorable to adjusting heating time more accurately and reliably, improves drying effect.

The swing driving mechanism 7 may directly or indirectly drive the drum 1 to swing. For example, referring to fig. 1, in some embodiments, the pneumatic drying apparatus 10 includes a support 51 on which the drum 1 is rotatably provided around its central axis, the support 51 being provided swingably up and down, and the swing driving mechanism 7 driving the drum 1 to swing up and down by driving the support 51 to swing up and down. At this time, the swing driving mechanism 7 does not directly drive the drum 1, but drives the drum 1 to swing up and down by driving the supporting member 51,

In addition, the swing drive mechanism 7 may take various configurations. For example, referring to fig. 1, in some embodiments, the swing drive mechanism 7 includes a linear motor 71. In this way, the linear motor 71 can drive the drum 1 to swing up and down only by extending and retracting up and down, which is simple and reliable.

The pneumatic drying apparatus 10 of the foregoing embodiments may further include a stopper 53, the stopper 53 limiting the axial displacement of the drum 1. Therefore, the roller 1 can be prevented from axially moving around the central axis and in the up-and-down swinging process, so that the whole structure is more stable and reliable.

As an example of the hot air applying mechanism 3 in the foregoing embodiments, referring to fig. 1, the hot air applying mechanism 3 includes a hot air supplying mechanism 35 and an air outlet shaft 36, the hot air supplying mechanism 35 communicates with the air outlet shaft 36 to introduce hot air into the air outlet shaft 36, the air outlet shaft 36 extends into the drum 1, and an air outlet hole 37 is provided on a side wall of the air outlet shaft 36 to allow the hot air introduced into the air outlet shaft 36 to flow into the drum 1 through the air outlet hole 37. In this way, the hot air applying mechanism 3 can prepare hot air through the hot air supplying mechanism 35 and send the hot air into the roller 1 through the air outlet shaft 36 to perform air flow drying on materials, and the drying is simple and convenient.

The air outlet holes 37 on the side wall of the air outlet shaft 36 may be multiple, and the air outlet holes 37 may be arranged at intervals along the axial direction and/or the circumferential direction of the air outlet shaft 36, so as to supply air into the drum 1 more uniformly, so that hot air and materials contact and exchange heat more uniformly, and a better air flow drying effect is achieved.

In addition, the air outlet shaft 36 may be disposed coaxially with the drum 1 or not. When the air outlet shaft 36 is coaxially arranged with the roller 1, the hot air can more uniformly spread in the inner space of the roller 1 via the air outlet shaft 36, and more fully contacts with the material for heat exchange, so as to dry the material, thereby being more beneficial to improving the drying effect.

Referring to fig. 1, in some embodiments, the end of the air outlet shaft 36 adjacent to the opening 13 is closed. Therefore, one end of the air outlet shaft 36, which is close to the opening 13, is not air-out, and hot air mainly flows into the roller 1 from the air outlet holes 37 on the side wall of the air outlet shaft 36, and the hot air can be prevented from directly flowing out of the opening 13 to the outside of the roller 1, so that the contact time of the hot air and materials is more beneficial to prolonging, and the drying effect is improved.

In addition, referring to fig. 1, in some embodiments, an end of the air outlet shaft 36 remote from the opening 13 communicates with a hot air supply mechanism 35. At this time, the hot air supply mechanism 35 may be disposed at the second end 12 of the drum 1 opposite to the first end 11, so that not only the space can be fully utilized, but also the whole structure is more compact and the whole volume is smaller, and under the condition that the opening 13 is used for feeding and discharging at the same time, the air flow can flow into the direction of the air outlet shaft 36, opposite to the feeding direction, the convection effect of the material and the hot air is formed, the contact sufficiency of the material and the hot air is improved, and the drying effect is improved.

In the foregoing embodiments, the air outlet shaft 36 may be rotatably provided. In this way, the hot air is uniformly distributed in the drum 1, and the drying effect is improved.

When the air outlet shaft 36 is rotatably arranged, the air outlet shaft 36 can rotate synchronously with the roller 1, so that the contact sufficiency and uniformity of hot air and materials are further enhanced, and the drying effect is improved.

In addition, when the air outlet shaft 36 is rotatably disposed, referring to fig. 1, in some embodiments, the air drying apparatus 10 includes a rotary joint 39, and the hot air supply mechanism 35 communicates with the rotatably disposed air outlet shaft 36 through the rotary joint 39. Under the action of the rotary joint 39, the hot air supply mechanism 35 can rotate relative to the air outlet shaft 36, so that the hot air supply mechanism 35 does not need to rotate when the air outlet shaft 36 rotates, thereby facilitating the arrangement of the hot air supply mechanism 35 and being beneficial to simplifying the whole structure.

As an example of the hot air supply mechanism 35 in the foregoing embodiments, referring to fig. 1, the hot air supply mechanism 35 includes a hot air duct 31, a heat exchanger 32, and a fan 33, the hot air duct 31 connects the heat exchanger 32 and an air outlet shaft 36, and the heat exchanger 32 is connected to the fan 33 so that the air driven by the fan 33 flows through the heat exchanger 32, is heated by the working medium (e.g., steam) in the heat exchanger 32, and flows into the air outlet shaft 36 via the hot air duct 31. Based on this, the air flows through the heat exchanger 32 under the driving of the fan 33, exchanges heat with the working medium in the heat exchanger 32, absorbs heat from the working medium, increases the temperature to become hot air, and then the hot air flows into the air outlet shaft 36 through the hot air pipe 31 under the driving of the fan 33 and flows into the roller 1 through the air outlet shaft 36, so that the preparation of the hot air and the delivery of the hot air to the roller 1 can be realized, and the method is simple and convenient.

In some embodiments, the fan 33 has a fresh air port to drive fresh air to the heat exchanger 32. In this way, the outside fresh air can be supplemented into the pneumatic drying equipment 10, so that the hot air flow requirement is met, the materials are effectively heated, and a good drying effect is realized.

In addition, referring to fig. 1, in some embodiments, the hot air supply mechanism 35 includes a return air duct 34, and the return air duct 34 is connected to the blower 33 and communicates with the opening 13, so that the air flowing out of the opening 13 flows to the heat exchanger 32 under the driving of the blower 33. Thus, the gas flowing out from the roller 1 can be recycled after being heated, and the energy waste is reduced.

The pneumatic drying apparatus 10 of the foregoing embodiments may be used in various production systems for drying various materials. For example, in some embodiments, the air drying apparatus 10 is used in a tobacco production system to air dry tobacco material. Therefore, the drying effect of the tobacco materials can be effectively improved, and the tobacco products with better quality can be obtained.

The air drying apparatus 10 may be particularly useful for drying filter rod particulate functional materials when the air drying apparatus 10 is used in a tobacco production system for air drying tobacco material.

The filter stick is used as an important component of the cigarette, and the performance of the filter stick directly influences the taste of the cigarette. The particle functional material forming the filter stick has excellent adsorptivity, stability and safety, and can effectively intercept and filter harmful substances in the smoke, such as tar, nicotine and other harmful particles, thereby playing a role in reducing tar and reducing harm. However, these particulate functional materials need to undergo a drying stage during the preparation process to ensure their stability and use.

In the related art, the drying of the functional material of the filter rod particles is generally realized by adopting modes such as vacuum drying, microwave drying or adsorption of adsorption materials, but the drying modes have the problems of low efficiency, high energy consumption, easy damage to the properties of the functional material of the filter rod particles and the like, and are difficult to effectively meet the requirement of industrial production of the functional material of the filter rod particles.

The air flow drying device 10 is used for drying the filter rod particle functional material, so that the air flow drying technology can be utilized to dry the filter rod particle functional material, the advantages of large heat and mass transfer surface area, high drying efficiency, short drying time and the like of the air flow drying technology are fully exerted, hot air and the filter rod particle functional material are enabled to exchange heat fully, the filter rod particle functional material is dried efficiently and high quality, the filter rod particle functional material is prevented from caking, burning or excessive drying, and the uniformity and consistency of the dried filter rod particle functional material are better.

Moreover, as the roller 1 of the pneumatic drying equipment 10 can swing up and down and can swing downwards to the opening 13 for discharging when the materials flow out, the flexible adjustment of the heating time is conveniently realized, so that the drying effect of the filter stick particle functional material can be effectively improved, the quality stability of the filter stick particle functional material is further improved, and the quality of tobacco products is improved.

The application will be further described with reference to the embodiments shown in fig. 1 and 2.

In this embodiment, the air drying apparatus 10 is a filter rod particulate functional material air drying apparatus, and the material that is dried is filter rod particulate functional material.

As shown in fig. 1 and 2, the pneumatic drying apparatus 10 of this embodiment includes a drum 1, a discharge hood 2, a hot air applying mechanism 3, a moisture discharging mechanism 4, a supporting device 5, a rotary driving mechanism 6, and a swing driving mechanism 7.

The drum 1 is used to provide a place for drying the material. In this embodiment, as shown in fig. 1, the drum 1 is generally cylindrical, its central axis extends transversely and intersects with the vertical direction (i.e. up-down direction), and both ends thereof are respectively provided with an annular guide rail 15, and the guide rails 15 are engaged with the roller 52 of the supporting device 5, so that the drum 1 is rotatably disposed on the supporting device 5 around its central axis to drive the material to roll.

In order to achieve an automatic rotation of the drum 1 about its central axis, in this embodiment the second end 12 of the drum 1 is in driving connection with the rotary drive mechanism 6, so that the drum 1 can be automatically rotated about its central axis under the drive of the rotary drive mechanism 6. Specifically, in this embodiment, the rotary driving mechanism 6 includes a rotary driving motor 61 and a belt transmission mechanism (not shown), and accordingly, the second end 12 of the drum 1 is provided with a pulley groove (not shown) engaged with a belt, so that the rotary driving motor 61 rotates, that is, the drum 1 is driven to rotate about its central axis by the belt transmission mechanism.

In this embodiment, the first end 11 and the second end 12 of the drum 1 are the right end and the left end of the drum 1, respectively. The first end 11 is provided with an opening 13 and the second end 12 is blocked such that the opening 13 serves as both a feed inlet and a discharge outlet, both for material to enter and exit through the same opening 13.

The inside of the roller 1 is provided with a shoveling plate 14, and the shoveling plate 14 is obliquely arranged on the inner wall of the roller 1, namely, a certain angle is formed between the shoveling plate 14 and the inner wall of the roller 1 so as to throw up the materials, stir-fry the materials together with the roller 1, and make the materials fully contact with hot air. In this embodiment, a plurality of groups of shoveling plates 14 are provided in the drum 1, the shoveling plates 14 are arranged at intervals along the axial direction of the drum 1, and each group of shoveling plates 14 comprises a plurality of shoveling plates 14 uniformly arranged along the circumferential direction of the drum 1, so that materials can be thrown more uniformly and sufficiently, and a better drying effect can be achieved.

The portion of the first end 11 of the drum 1 adjacent to the opening 13 is gradually expanded in the feeding direction to prevent feed blockage and to facilitate discharge. And, the opening 13 is covered with a discharging cover 2 to prevent the material from running off during discharging. The surface of the discharging cover 2 far away from the opening 13 is provided with a material door, and after the material door is opened, materials can be added, so that the materials enter the roller 1 through the opening 13, and the feeding process is realized. The bottom of the discharging cover 2 is opened so that the material flowing out from the opening 13 falls down when discharging, and the discharging process is realized.

The center of the second end 12 of the drum 1 is provided with a through hole (not shown), through which the air outlet shaft 36 of the hot air applying mechanism 3 passes.

The hot air applying mechanism 3 is used for applying hot air to the interior of the roller 1 and performing air flow drying on the materials in the roller 1. As shown in fig. 1, in this embodiment, the hot air applying mechanism 3 includes an air outlet shaft 36, a connecting rod 38, a rotary joint 39, and a hot air supply mechanism 35.

The air-out shaft 36 extends into the drum 1 through a through hole in the center of the second end 12 of the drum 1 and is connected with the inner wall of the drum 1 through a plurality of connecting rods 38, so that the air-out shaft 36 is disposed in the drum 1, coaxially arranged with the drum 1 and can synchronously rotate along with the drum 1. In this embodiment, the air outlet shaft 36 is a hollow shaft, the right end face (i.e., the end face near or facing the opening 13) is a sealing surface, and a plurality of groups of air outlet holes 37 are provided on the portion of the air outlet shaft located inside the drum 1, the plurality of groups of air outlet holes 37 are arranged at intervals along the axial direction of the air outlet shaft 36, and each group of air outlet holes 37 includes a plurality of air outlet holes 37 uniformly arranged along the circumferential direction of the air outlet shaft 36 so as to uniformly introduce hot air into the drum 1.

The left end of the air outlet shaft 36 extends to the outside of the drum 1 and is connected to the hot air supply mechanism 35 through a rotary joint 39.

The hot air supply mechanism 35 is used for preparing and supplying hot air. As shown in fig. 1, in this embodiment, the hot air supply mechanism 35 includes a hot air duct 31, a heat exchanger 32, a fan 33, and a return air duct 34.

One end of the hot air pipe 31 is connected to the air outlet shaft 36 through a rotary joint 39, so that the hot air pipe 31 is not required to rotate when the air outlet shaft 36 rotates, and is in a static state, and meanwhile, the other end of the hot air pipe 31 is connected to the heat exchanger 32.

The heat exchanger 32 connects the fan 33 and the hot air pipe 31, and the inside of the heat exchanger is provided with uniformly arranged pipelines, steam serving as an working medium flows in the pipelines, and gas to be heated flows in the pipelines, so that when the gas to be heated flows through the pipelines, heat can be absorbed from the steam in the pipelines, and the temperature rises and becomes hot air.

The blower 33 drives the gas flow. In this embodiment, the fan 33 has an independent fresh air port to supplement the fresh air from the outside into the hot air supply mechanism 35 to satisfy the flow rate of the hot air. A filter screen is arranged at the fresh air inlet to filter fresh air.

The return air pipe 34 is used for guiding return air to the fan 33, and flows through the heat exchanger 32 under the driving of the fan 33, is heated by steam, and returns to the roller 1 again, so that the hot air circulation utilization is realized. In this embodiment, as shown in fig. 1, one end of the return air duct 34 is connected to the blower 33, and the other end is connected to the moisture removal mechanism 4.

As can be seen from fig. 1, in this embodiment the moisture removal mechanism 4 comprises a moisture removal hood 41 and a moisture removal tube 42. The moisture discharging hood 41 is installed at the upper end of the discharging hood 2 for discharging hot air and water vapor inside the drum 1. The side of the moisture discharging hood 41 is connected to the return duct 34 of the hot air applying mechanism 3 so that the hot air flowing out of the drum 1 can flow back to the hot air applying mechanism 3 to be recirculated, and the upper end of the moisture discharging hood 41 is connected to the moisture discharging duct 42 to discharge the moisture in the apparatus.

The supporting means 5 are for supporting the drum 1. As shown in fig. 1 and 2, in this embodiment, the supporting device 5 includes a supporting member 51, a riding wheel 52, a stopper 53, a bearing housing 54, a rotation shaft 55, and a bracket 56. The supporting member 51 is a supporting plate, and the upper portion of the supporting member is provided with a left group of riding wheels 52 and a right group of riding wheels 52 for supporting the roller 1, so that the roller 1 rotates, the lower portion of the supporting member is arranged on the bracket 56 through the bearing seat 54 and the rotating shaft 55, and the axial direction of the rotating shaft 55 is along the front-back direction, so that the supporting member 51 can be arranged on the bracket 56 in a vertical swinging manner, and the roller 1 can be driven to swing up and down together. The limiting member 53 is a limiting wheel, and is used for limiting axial displacement of the drum 1 and preventing the drum 1 from moving axially during operation. In this embodiment, the stoppers 53 are provided below both the left and right ends of the drum 1 to more reliably axially position the drum 1.

The swing driving mechanism 7 is used to drive the drum 1 to swing up and down. As shown in fig. 1, in this embodiment, the swing drive mechanism 7 includes a linear motor 71. The linear motor 71 is vertically fixed to the right side of the bracket 56 below the first end 11 of the drum 1 and connected to the right end of the supporter 51. Thus, the linear motor 71 is extended and contracted up and down, and the supporting member 51 and the drum 1 are driven to swing up and down around the rotation shaft 55, thereby adjusting the inclination angle of the drum 1.

Based on the above structural arrangement, the pneumatic drying apparatus 10 of this embodiment can feed and discharge materials through the same end of the drum 1, and can control whether to discharge materials by controlling whether the drum 1 swings downward, so as to flexibly control the heating time, and the corresponding working process is approximately as follows:

When the drying machine works, the linear motor 71 stretches out upwards to drive the roller 1 to swing upwards, the opening 13 on the right side of the roller 1 faces upwards, then materials to be dried are added into the roller 1 through the opening 13, then the linear motor 71 retracts to enable the roller 1 to return to a horizontal position, the roller 1 rotates to be together with the shoveling plate 14 in the roller 1 to throw up the materials, in the rotating process of the roller 1, the air outlet shaft 36 of the hot air applying mechanism 3 continuously applies hot air to the periphery in the roller 1 to dry the thrown materials, redundant hot air and water vapor in the roller 1 flow to the moisture discharging cover 41 above the discharging cover 2 through the opening 13, the water vapor is discharged from the moisture discharging pipe 42 of the moisture discharging mechanism 4, the hot air enters the heat exchanger 32 again under the action of the fan 33, the hot air is re-entered into the roller 1 after reaching the process temperature, after the drying is completed, the linear motor 71 retracts to drive the roller 1 to swing downwards, and the opening 13 is discharged through the opening 13 and the bottom of the discharging cover 2.

The pneumatic drying apparatus 10 may be subjected to a preheating treatment before the material is dried. Specifically, before feeding, the drum 1 is driven to rotate around its central axis, the heat exchanger 32 and the fan 33 are turned on, so that the external air enters the hot air supply mechanism 35 from the fresh air port of the fan 33, and when passing through the heat exchanger 32, the air is heated, then flows into the air outlet shaft 36, is ejected to the periphery of the interior of the drum 1 by the air outlet shaft 36, and preheats the interior of the drum 1. Thus, the drying efficiency is improved, and the drying effect is improved.

Therefore, the embodiment fuses the uniform heating characteristic of roller type hot air drying with the rapid mass transfer and heat transfer advantages of air flow drying, so that the filter stick particle functional material can be dried efficiently, uniformly and with low energy consumption, and whether the filter stick particle functional material is discharged or not is controlled by controlling whether the roller 1 swings downwards or not through feeding and discharging the same end of the roller 1, so that the heating time can be flexibly controlled according to actual requirements, the drying effect of the filter stick particle functional material is effectively improved, the quality stability of the filter stick particle functional material is improved, and the method has important significance for improving the quality of cigarettes, guaranteeing the health of consumers and promoting the sustainable development of the tobacco industry.

The foregoing description of the exemplary embodiments of the application is not intended to limit the application to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the application.

Claims (12)

1. An air drying apparatus (10), characterized by comprising:

A drum (1) rotatably disposed about its central axis and having an opening (13), said opening (13) being disposed at a first end (11) of said drum (1) and being adapted to allow material to flow out of said drum (1), said drum (1) being swingably disposed up and down and swinging down with said opening (13) facing down upon material flow out, and

And the hot air applying mechanism (3) is communicated with the interior of the roller (1) so as to introduce hot air into the roller (1) and dry the materials in the roller (1).

2. The pneumatic drying apparatus (10) according to claim 1, wherein the openings (13) are also used for feeding material into the drum (1), and/or wherein the drum (1) is kept horizontal during material drying after feeding to before discharging, and/or wherein the flow area of the portion of the drum (1) adjoining the openings (13) is gradually reduced in the direction of material flow out of the drum (1).

3. The pneumatic drying apparatus (10) according to claim 2, wherein the drum (1) is kept horizontal or swung upwards with the opening (13) facing upwards when the material is entered.

4. The air drying apparatus (10) according to claim 1, wherein the air drying apparatus (10) further comprises a swing driving mechanism (7), the swing driving mechanism (7) driving the drum (1) to swing up and down, and/or the air drying apparatus (10) further comprises a stopper (53), the stopper (53) restricting axial displacement of the drum (1).

5. The air drying apparatus (10) according to claim 4, wherein the air drying apparatus (10) includes a support member (51), the drum (1) is rotatably provided on the support member (51) about its own center axis, the support member (51) is provided swingably up and down, the swing driving mechanism (7) drives the drum (1) to swing up and down by driving the support member (51) to swing up and down, and/or the swing driving mechanism (7) includes a linear motor (71).

6. An air flow drying apparatus (10) according to any one of claims 1-5, wherein the hot air applying mechanism (3) comprises a hot air supply mechanism (35) and an air outlet shaft (36), the hot air supply mechanism (35) is communicated with the air outlet shaft (36) to introduce hot air into the air outlet shaft (36), the air outlet shaft (36) extends into the drum (1), and an air outlet hole (37) is arranged on the side wall of the air outlet shaft (36) to enable the hot air introduced into the air outlet shaft (36) to flow into the drum (1) through the air outlet hole (37).

7. The air flow drying apparatus (10) of claim 6, wherein the air outlet shaft (36) is configured to at least one of:

the air outlet shaft (36) is coaxially arranged with the roller (1);

the air outlet shaft (36) is rotatably arranged;

The side wall of the air outlet shaft (36) is provided with a plurality of air outlet holes (37), and the air outlet holes (37) are arranged at intervals along the axial direction and/or the circumferential direction of the air outlet shaft (36);

one end of the air outlet shaft (36) close to the opening (13) is closed;

One end of the air outlet shaft (36) far away from the opening (13) is communicated with the hot air supply mechanism (35).

8. The air drying apparatus (10) according to claim 7, characterized in that the air outlet shaft (36) rotates synchronously with the drum (1) and/or that the air drying apparatus (10) comprises a swivel joint (39), through which swivel joint (39) the hot air supply means (35) communicates with the rotatably arranged air outlet shaft (36).

9. The air drying apparatus (10) according to claim 6, wherein the hot air supply mechanism (35) comprises a hot air pipe (31), a heat exchanger (32) and a fan (33), the hot air pipe (31) is connected with the heat exchanger (32) and the air outlet shaft (36), the heat exchanger (32) is connected with the fan (33) so that air driven by the fan (33) flows through the heat exchanger (32), is heated by working media in the heat exchanger (32), and flows into the air outlet shaft (36) through the hot air pipe (31).

10. The air drying apparatus (10) according to claim 9, wherein the fan (33) has a fresh air inlet to drive fresh air to the heat exchanger (32), and/or the hot air supply mechanism (35) further comprises a return air duct (34), the return air duct (34) being connected to the fan (33) and communicating with the opening (13) such that air exiting the opening (13) flows to the heat exchanger (32) under the drive of the fan (33).

11. Tobacco production system, characterized by comprising an air drying device (10) according to any one of claims 1-10.

12. Tobacco production system according to claim 11, wherein the pneumatic drying apparatus (10) dries filter rod particulate functional material.