JPH07798A - Continuous supply and discharge processing device - Google Patents

Abstract

(57) [Summary] [Purpose] Continuous stable treatment of liquid, viscous material, granular material, etc. in a sealed container under a differential pressure condition and stable quantitative feed to the next processing step. To be able to do so. [Structure] An object to be treated 4'is supplied by a positive displacement pump 2 such as a snake pump into a sealed container 1 ', and a next stage treatment step 6'is performed.
Another positive displacement pump 5 such as a snake pump is used to convey the object 4'in the sealed container 1'to ensure that the object 4'can be processed in a predetermined manner. [Effect] The differential pressure state is always maintained, stable processing can be carried out, and stable quantitative supply can be performed to the next processing step 6 '.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The disclosed technology belongs to a technical field in which a sealed container is maintained at a predetermined differential pressure state with respect to an external system, and a constant volume of an object to be processed is supplied from a pre-process to a next process.

[0002]

2. Description of the Related Art As is well known, in various industrial industries, it is extremely important to quantitatively convey an object to be treated such as powder or liquid between a pretreatment step and a next step. In many cases, for example, as shown in FIG. 6, the objects (a) and (b) to be processed are fed to the closed container 1 via pumps 2 and 2 ′ as a feeding device, and the agitator 3 is used as much as possible. In order to uniformly control the quality of the material, it is necessary to uniformly disperse and agitate the material and to transfer it to the next step 4 via the pump 3 as the discharging device, in order to improve the quality control. Since it is not preferable in terms of processing work efficiency, a technique of using a positive displacement pump such as a snake pump for the pumps 2, 2 ′ and 3 of the supply device and the discharge device is adopted. A technique used for the construction method is disclosed in Japanese Patent Laid-Open No. 3-121. It disclosed in 15 JP invention like.

Thus, although the technique of using such a positive displacement pump surely supplies a fixed amount, when the object to be treated is powder such as dry mortar or cement, air or the like is involved and the system is In addition to being unable to maintain the differential pressure state inside and outside of the container, in any case such as when a foaming phenomenon occurs in the continuous supply and discharge process, the transport pressure fluctuates, and as a result, quantitative transport cannot be carried out. There is.

[0004]

Such a problem is not limited to powdery or granular materials, but similar problems occur even when the material to be processed is a liquid due to air entrapment or a dissolution phenomenon in the pretreatment process.

By the way, a treatment mode in which the sealed container is maintained at a predetermined differential pressure state with the atmosphere outside the sealed container, the object to be processed is processed in a predetermined manner, and continuously discharged to the next step. Is extremely versatile in the industrial industry. For example, a reactor such as an autoclave is a typical usage mode, and it is operated in a stable balanced state with respect to pressure and heat over time. In particular, in chemical mechanical technology, which is a central technology of various industries, it is possible to cause a reaction under a predetermined differential pressure state in a chemical conversion reaction, an extraction reaction, or the like, perform extraction, It is expected that there will be considerable demand for separation technology in the future.

Thus, the treatment in a hermetically sealed container such as an autoclave is carried out by the strength and rigidity of the wall surface of the container with respect to the balance of internal and external pressures, and the heat balance is designed by a heater or a cooler. However, the bubbling phenomenon and mixing phenomenon of the gas dissolved in the object to be processed cannot be sufficiently dealt with only by making the container a sealed type, and the physical, There is a drawback in that the balance is broken due to changes in chemical conditions, the above-mentioned foaming phenomenon and the like occur, and the maintenance of a constant pressure state is broken, and therefore it becomes difficult to carry out quantitative transportation.

There is a demerit that such a phenomenon cannot be dealt with only by providing a positive displacement pump such as a snake pump in the transfer process from the preceding step to the next step.

It is also possible to release the pressure from the pretreatment step to the discharge step to the atmosphere so that the pressure can be continuously supplied quantitatively and continuously. Not only does the unit plant become large-scale, the structure becomes complicated and the initial cost becomes high, but also the maintenance cost such as maintenance, inspection, and maintenance becomes high. However, there is a disadvantage in that the dissolved amount of is increased and pressure fluctuation occurs in the discharging process.

Thus, in the food industry, which is very closely related to the improvement of people's lives in recent years, for example, not only fat is separated and removed from fish meat and the fat is not only effectively used but also separated from fat. It has been put into practical use to take a process such as using a protein portion as a kamaboko, but when separating and removing fats and the like from such fish meat, a vacuum is applied to the inside of the sealed container to separate and remove the fats. There is a strong demand for a technique for carrying out, and removal of the liquid component that is mixed in during the transportation of the powder, mixed liquid, or kneaded material to the next step, and further increase in dissolved gas. In order to prevent the above, it has been strongly desired to develop a technique for transporting with a constant pressure difference, but a technique for totally dealing with this has not been developed, and this appearance has been strongly desired.

[0010]

OBJECT OF THE INVENTION The object of the invention of this application is to quantitatively convey or foam by mixing dissolved gas in the processed material during continuous feeding / discharging of various processed materials from the previous processing step to the next processing step based on the above-mentioned prior art. This is a technical issue that should solve the problem that a large amount of transport is not possible due to changes in transport pressure due to fluctuations in the amount, and the object to be treated once supplied to the sealed container is limited to the next-stage treatment process. It is carried out as a continuous quantitative supply, avoiding quality changes of the object to be processed, has good processing efficiency, and can expect the precision of the final product to be as expected as designed. It is intended to provide a continuous supply and discharge treatment device.

[0011]

In order to solve the above-mentioned problems, the structure of the invention of the present application, which is based on the above-mentioned object, is intended to solve the above-mentioned problems by mixing gas such as air from the outside of the system. Is continuously unavoidably supplied from the previous processing step to the next processing step, etc., through a sealed container, the product is continuously supplied to the sealed container during discharge. In order to maintain a constant differential pressure between the sealed container and the atmosphere outside the sealed container, a constant pressure maintaining pump such as a vacuum pump is attached to the sealed container so that the internal pressure of the sealed container is kept constant and the differential pressure between the sealed container and the outside is maintained. Is kept constant, i.e., the foaming from the object to be processed and the increase in the dissolved amount of the atmosphere are avoided, and the positive stage pump or the next stage process is reliably supplied via a positive displacement pump such as a snake pump. Can be discharged (the supply device is also a discharge device It is a positive displacement pump, so that the treatment of the object to be treated in the hermetically sealed container is stably performed in a fixed amount, and the supply and discharge from the preceding stage to the next stage are always performed in a fixed amount.), Achieve continuous supply and discharge of the processed material in a fixed amount, ensure stable quality maintenance of the processed material, and prevent plant operating conditions from fluctuating and increasing power costs, etc. It is a technical measure that has been taken.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the invention of this application is shown in FIGS.
The explanation is based on the following.

The same parts as in FIG. 6 will be described using the same reference numerals.

The embodiment shown in FIG. 1 shows the principle of the invention of this application, in which the hermetically sealed container 1'is closed both pressureally and thermally. ) Is fed through a known positive displacement pump 2 such as a snake pump, a tube pump, a geared pump or the like as a continuous feeding device, and is agitated by the agitating device 3 as uniformly as possible. The processed product 4 ′ is temporarily stored and is similarly discharged to the next processing step 6 ′ by the positive displacement pump 5 as a continuous discharge device.

Of course, the object to be treated from the preceding stage is not limited to (a), but may be supplied and discharged by another positive displacement pump 2'as shown in (b). .

Since the continuous supply device 2 and the continuous discharge device 5 are positive displacement pumps such as a snake pump, a chirp pump, and a geared pump, the objects (a) and (b) of the object to be treated with respect to the sealed container 1'are Supply and discharge are sealed containers 1
It is possible to supply and discharge while maintaining the pressure difference between the inside and outside of the '.

Thus, the well-known pressure sensors 9 (for internal pressure) and 9 '(for external pressure) are exposed to the hermetically sealed container 1', and the hermetically sealed container 1'is provided through an appropriate control device 10. The vacuum pump 7 is controlled to start and stop in order to maintain a predetermined differential pressure state, and the upper space 8 inside the sealed container 1'is brought into a predetermined vacuum state so that the set differential pressure can be maintained. It is automatically controlled.

In the above structure, the objects (a) and (b) from the preceding stage are supplied from the positive displacement pumps 2 and 2 ′ serving as continuous supply devices into the sealed container 1 ′, and the stirring device 3 is used as much as possible. The mixture is agitated in a uniformly dispersed state and discharged to the next step 6'by the continuous discharge device 5 of the positive displacement pump, but the upper space in the sealed container 1'is set by the vacuum pump 7 with the pressure sensors 9, 9 '. The differential pressure between the outside air and the outside air is always maintained in a constant negative pressure state via the positive pressure pump, so that the positive displacement pump 5 as the continuous discharge device discharges the processed material 4 ′ to the next processing step 6 ′, There is no foaming phenomenon,
Therefore, fluctuations in pressure and the like can be avoided, and constant quantity supply can be performed. Therefore, the quality of the object to be processed 4 ′ itself does not change, and the predetermined processing in the subsequent processing step 6 ′ can be performed stably.
The operation of the entire plant is stable and the plant is operated without fluctuations in efficiency.

Therefore, in the discharge process of the positive displacement pump 5, the pressure does not escape, the pressure fluctuation is avoided, and the fixed amount conveyance becomes possible.

A positive displacement pump such as a snake pump is well known in the art. For example, a positive displacement helical rotor that is eccentrically rotated in a two-strand helical elastic stator fixed in a casing is used. For the source, a universal joint is used.

Further, in order to make the differential pressure inside the sealed container 1'constant, not only the vacuum pump but also a mode in which a pressure pump is used to avoid the fluctuation of the dissolved gas can be adopted.

Next, in the concrete example shown in FIG. 2, the hermetically sealed container 1 '' is of an autoclave type, is provided with an agitator 3'inside thereof, and is provided continuously above the rotary shaft thereof. A positive displacement pump 2 ″ such as a snake pump as a supply device and a positive displacement pump 5 ′ such as a snake pump as a continuous discharge device are linked, and the drive thereof is a positive displacement pump 2 ″ of the supply device. Reducer 1 for motor 12 by universal joint 11 for
3 through which the object (a) to be treated from the previous treatment step is exposed to the positive displacement pump 2 ″ as a continuous supply device through the joint type branch pipe 14 of the universal joint 11 part. It is designed to be continuously supplied.

At the top of the sealed container 1 '', the exhaust port 1
5 is provided and is connected to the vacuum pump 7 '.

In the present embodiment, the object (a) to be treated from the pre-treatment step fed into the sealed container 1 '' is continuously fed by the snake pump 2 '' of the positive displacement pump as the feeding device. Therefore, a fixed amount of supply is guaranteed, and in the sealed container 1 ', a stirring device 3'performs a mixing and stirring process in a state of uniform dispersion as much as possible, and a vacuum pump 7'.
Since the upper space is exhausted to a predetermined pressure by a predetermined negative pressure state and the differential pressure between the inside and the outside is always kept constant, the snake pump 5'of the positive displacement pump of the continuous discharge device is used. Since the object to be treated (a ′) is continuously discharged while the pressure is maintained and discharged to the next step, there is no pressure fluctuation due to foaming, etc., and stable continuous supply and discharge are guaranteed, and the sealed container 1 The processing in `` will always be performed in a stable manner in a quantitative state, the quality of the object to be processed and the processing will be stable as in the above-described principle mode, and continuous continuous operation will be performed without fluctuation. .

In the embodiment shown in FIG. 3, fish meat (for example,
Separation of light liquid (a '') containing fat and fish meat (heavy liquid (a ')) containing no fat to make fat-free sardine raw material such as sardines Is a processing mode,
A positive displacement pump 2 ″ of a snake pump is provided from the front side at a supply port for a box-shaped hermetic container 1 and is linked to a motor 12 ′ with a speed reducer via a universal joint 11. Immediately before the pump 2 ″, an inlet 14 ′ for fish meat (a) is provided to face an appropriate conveyor (not shown), and an exhaust port 15 is provided above the casing of the sealed container 1.

The fish meat product (a) supplied from the supply port 14 'to the sealed container 1 is stirred in the sealed container 1 by a stirrer 3''to be uniformly dispersed. Since negative pressure is sucked by the vacuum pump 7'in the upper space, the fat content mixed in the fish meat is easily separated by negative pressure suction, and the light liquid content (a ) Is separated from the heavy liquid content (a ′) of the lower fish meat, the light liquid content of the fat is discharged by a predetermined discharge device (snake pump) 5, and the lower heavy liquid content is The fish meat (a ') of the snake pump is a positive displacement pump 5'',
It is discharged from the discharge port 16 to the next processing step.

In the process, in the sealed container 1, the liquid content mixed in the fish meat is balanced with the supply quantity and the discharge quantity of the light and heavy liquids, and the negative pressure assists the differential pressure. In order to maintain constant pressure, the supply device 2 "and the discharge device snake pump positive displacement pumps 5" and 5 "can reliably supply and discharge a fixed amount of pressure while maintaining the differential pressure. Become.

Therefore, in this embodiment, the fish meat content (a ') and the fat content (a'') are reliably separated and effectively utilized.

The embodiment shown in FIG. 4 is also a mode of treating fish meat, but a separator 3 '''is provided for the agitator 3 so that a light liquid (a'') of fat and fish meat Of the heavy liquid (a ′) is securely separated in the sealed container 1, and these are separated and discharged by the positive displacement pumps 5 and 5 ″ as the continuous discharge device, and the positive displacement pump 2 as the continuous supply device The constant supply and discharge of a fixed amount are guaranteed, and the continuous supply can be surely performed without pressure fluctuation in the continuous supply and discharge process, and the operational effects obtained are the same as those in the above-described embodiment.

The embodiment shown in FIG. 5 is a kneading mode of dry mortar used for the NATM method used for tunnel construction of railways and motorways. In the drum type sealed container 1, a drive motor 12 'is provided. Screw type dry mortar supply device 3 connected via a speed reducer 13
1 and a paddle type stirring device 31 'are coaxially installed, a dry mortar supply port 14' faces a conveyor (not shown), and a water supply port 14 '' is provided adjacent to the supply port 14 '. The dry mortar and water are mixed and agitated at a predetermined mixing ratio, and the supply / stirring devices 31, 31 'are provided with universal joints 11', 11 '.
The positive displacement pumps 5 and 5'of the snake pump having the functions of '' and 11 '''are connected, and the sealed container 1 is provided between the positive displacement pumps 5 and 5'of the casing, and the vacuum pump 7'. It is connected to the.

In the positive displacement pumps 5 and 5 ', the stator 51 is a two-thread spiral type elastic stator, and the rotor linked to the universal joint 11 "' is a one-thread spiral type. During the quantitative transportation of the kneaded mortar and during the kneading of the dry mortar, the entrained air is discharged by the vacuum pump 7'provided in the sealed container 1 and quantified by the positive displacement pump 5'while maintaining the differential pressure. It is discharged and conveyed to the next-stage device.

Therefore, in this embodiment, as in the invention of Japanese Patent Laid-Open No. 3-121815 described above, pressure fluctuations due to the presence of mixed air are avoided and the lock bolts of the NATM method of kneading mortar are firmly injected. It can be transferred to the next processing step.

Of course, the embodiment of the invention of this application is not limited to the above-mentioned embodiments. For example, the constant pressure maintaining pump connected to the sealed container is not only a vacuum pump but also a pressurizing pump. It is possible to employ various modes such as avoiding the fluctuation of the dissolved amount of the liquid mixed with the processed material and keeping the differential pressure constant.

Of course, not only liquid powder but also viscous material can be applied to the object to be treated.

It is also within the scope of design changes that various types such as a horizontal type, a vertical type, an inclined type, a drum type and a cubic type can be adopted as the sealed container.

[0036]

As described above, according to the invention of this application, basically, in various production industries such as manufacturing of construction materials, refining of food materials, extraction of chemicals, selection and separation of agricultural products,
When performing various processes such as separation, crushing, etc. from the surrounding atmosphere under a negative pressure condition or under a pressure difference condition of a pressurized condition, the differential pressure condition is surely maintained and the front end process step to the next stage process are performed. According to the invention of this application, when it is necessary to quantitatively feed the object to be processed, the sealed container is surely kept in the differential pressure state, and when the object to be processed is continuously supplied to and discharged from the sealed container. By installing a positive displacement pump such as a snake pump as a supply device and a discharge device, quantitative transfer can be performed without fluctuations in foaming and dissolved states in the supply and discharge processes. The excellent effect that it is possible to guarantee that the process of 1) is performed in a stable state is exhibited.

Since the vacuum pump and the constant pressure maintaining pump such as the pressurizing pump are connected to the sealed container, the differential pressure is reliably and stably maintained, and the positive displacement pump operates as designed. The effect that it is done to is exhibited.

Further, since the hermetically sealed container can surely maintain the differential pressure state by the constant pressure maintaining pump, the negative pressure or the pressurized state under the differential pressure condition is applied when the processing object is separated. It becomes possible to perform separation processing at the base, and it is possible to reliably convey the separated processed object to the next processing step by the pump, and reliably exhibit the function designed to meet the predetermined purpose as the whole plant There is an excellent effect that it can be done.

Therefore, since the positive displacement pump connected to the hermetically sealed container and the differential pressure maintaining pump work in cooperation with each other, there is an effect that the predetermined treatment can be surely performed on the object to be treated. It

Since the positive displacement pump is used as a supply device or a discharge device, separation and stirring of the object to be treated in the hermetically sealed container are always performed quantitatively. Avoids foaming and alteration due to dissolved gas,
There is also an effect that the reliability of the quality of the final product can be obtained.

[Brief description of drawings]

FIG. 1 is a schematic partial cross-sectional side view of an embodiment of the principle mode of the invention of this application.

FIG. 2 is a partial vertical cross-sectional view of one embodiment.

FIG. 3 is a partial vertical sectional view of another embodiment of the same.

FIG. 4 is a partial vertical cross-sectional view of another embodiment.

FIG. 5 is a partial vertical cross-sectional view of still another embodiment of the present invention.

FIG. 6 is a partial vertical schematic view of a conventional general mode.

[Figure 7]

[Explanation of symbols]

 1 Sealed processing container 4 Processing object 2, 2'Supply device 5 Discharge device 7, 7'Constant pressure maintenance pump

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[Procedure amendment]

[Submission date] January 14, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is a schematic partial cross-sectional side view of an embodiment of the principle mode of the invention of this application.

FIG. 2 is a partial vertical cross-sectional view of one embodiment.

FIG. 3 is a partial vertical sectional view of another embodiment of the same.

FIG. 4 is a partial vertical cross-sectional view of another embodiment.

FIG. 5 is a partial vertical cross-sectional view of still another embodiment of the present invention.

FIG. 6 is a partial vertical schematic view of a conventional general mode.

[Explanation of Codes] 1 Sealed processing container 4 Processing object 2, 2'Supply device 5 Discharge device 7, 7'Constant pressure maintenance pump

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display area E04G 21/02 7228-2E 21/04 7228-2E

Claims (5)

[Claims] 1. A continuous supply and discharge processing device in which a supply device and a discharge device of an object to be processed are connected to a sealed processing container having a predetermined differential pressure with respect to an external system, and a constant pressure is maintained in the sealed processing container. A continuous supply and discharge treatment device, wherein a pump is connected, and the supply device and the discharge device are positive displacement pumps. 2. The continuous supply / discharge processing apparatus according to claim 1, wherein the constant pressure maintaining pump is a vacuum pump. 3. The continuous supply / discharge processing apparatus according to claim 1, wherein the positive displacement pump is a snake pump. 4. The continuous supply / discharge processing apparatus according to claim 1, wherein the sealed processing container is for defoaming and suppressing foaming. 5. The continuous supply / discharge processing apparatus according to claim 1, wherein the sealed processing container is a stirring container.