CN112977939A - Vacuum treatment device for bagged seeds - Google Patents

Vacuum treatment device for bagged seeds Download PDF

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Publication number
CN112977939A
CN112977939A CN202110216878.9A CN202110216878A CN112977939A CN 112977939 A CN112977939 A CN 112977939A CN 202110216878 A CN202110216878 A CN 202110216878A CN 112977939 A CN112977939 A CN 112977939A
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CN
China
Prior art keywords
negative pressure
vacuum
bag
opening
sealing frame
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Pending
Application number
CN202110216878.9A
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Chinese (zh)
Inventor
李刚
李红伟
庞俊兰
刘志浩
王慧灵
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Suzhou Lanrun Agricultural Technology Co ltd
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Suzhou Lanrun Agricultural Technology Co ltd
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Application filed by Suzhou Lanrun Agricultural Technology Co ltd filed Critical Suzhou Lanrun Agricultural Technology Co ltd
Priority to CN202110216878.9A priority Critical patent/CN112977939A/en
Publication of CN112977939A publication Critical patent/CN112977939A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B31/00Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/04Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied
    • B65B31/06Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied the nozzle being arranged for insertion into, and withdrawal from, the mouth of a filled container and operating in conjunction with means for sealing the container mouth
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B43/00Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/26Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks
    • B65B43/30Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks by grippers engaging opposed walls, e.g. suction-operated
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10Applying or generating heat or pressure or combinations thereof
    • B65B51/14Applying or generating heat or pressure or combinations thereof by reciprocating or oscillating members

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Vacuum Packaging (AREA)

Abstract

The invention discloses a bagged seed vacuum treatment device which comprises support frames and a manipulator, wherein a platform is arranged between the support frames, and a conveying mechanism, a vacuum mechanism, a lifting mechanism and a negative pressure mechanism are arranged on the platform. The invention provides a bagged seed vacuum treatment device, wherein a conveying mechanism, a vacuum mechanism, a lifting mechanism and a negative pressure mechanism are all controlled by a PLC (programmable logic controller), a bag opening arranged on the vacuum mechanism moves to a sealing frame, a manipulator adjusts the opening of the bag to be inserted between the lifting mechanism and the sealing frame, the negative pressure mechanism is attracted with the bag opening, the vacuum mechanism is inserted into the bag opening to extract gas in the bag, and a heating sheet is arranged in the lifting mechanism to seal the bag opening. The vacuum pump works to pump the gas in the gas box, so that the pumped vacuum degree is obtained through the pumped gas capacity in the gas box every time, and the vacuum degree of the same batch of seeds is ensured to be consistent in the process of carrying out vacuum treatment on the same batch of different seeds.

Description

Vacuum treatment device for bagged seeds
Technical Field
The invention relates to the field of vacuum treatment, in particular to a vacuum treatment device for bagged seeds.
Background
The Camellia oleifera (Camellia oleifera Abel) is an economic forest species with higher production value in the Camellia of the Theaceae, is a main woody oil plant species in China, is planted by utilizing the natural conditions of mountainous areas, is an important means for increasing the economic income of farmers, and has important significance for greening barren mountains, regulating climate, storing water and soil and regulating ecological balance. The camellia bud seedling is used as the stock to graft other plants in the camellia genus of the camellia family, and is widely applied to production due to simple and convenient operation, high survival rate and rapid growth after grafting survival. Grafting with camellia oleifera bud seedlings as rootstocks can be carried out all the year round, but camellia oleifera seeds for cultivating camellia oleifera bud seedlings cannot guarantee supply all the year round, so that the current camellia oleifera bud seedling grafting period is mainly concentrated on 4-6 months per year. The long-term storage of the camellia oleifera seeds can well solve the problems, and the current methods for effectively prolonging the storage period of the camellia oleifera seeds comprise low-temperature refrigeration, sand storage, normal-temperature storage and other storage methods, wherein the low-temperature refrigeration effect is the best, but the germination rate of the camellia oleifera seeds in the storage period of more than 1 year is still very low, so that effective storage measures are urgently needed in production, the deterioration speed of the camellia oleifera seeds is reduced, and the germination rate of the stored seeds is improved.
The vacuum working chamber of the existing vacuum packaging machine comprises a vacuum working chamber consisting of an upper sealing cover and a lower sealing working flat plate, a vacuum pipeline is connected through a sealing pumping hole arranged on the lower sealing working flat plate, and the vacuum working chamber is controlled by electrical equipment to finish the vacuum pumping work of the vacuum working chamber.
At present, a common vacuum packaging machine generally adopts a manual lifting vacuum cover, and the vacuum cover is lifted from one side of a workbench to the other side. The vacuum cover is lifted manually, which wastes time and labor, and has high labor intensity and low working efficiency. When the vacuum packaging machine works, a packaging bag to be sealed is placed on the workbench, the bag opening is placed on the heating strip on the workbench, the workbench is covered by the vacuum cover, and after air is exhausted, the heating strip rises to seal the bag opening. In this way, the mouth of the bag is displaced, affecting the sealing of the bag, and the lack of control of the same batch results in a different vacuum.
Disclosure of Invention
The present invention provides a vacuum processing apparatus for bagged seeds, which is directed to solve the above-mentioned problems of the related art.
The technical scheme of the invention is realized as follows:
a vacuum treatment device for bagged seeds comprises support frames and a manipulator, wherein a platform is arranged between the support frames, and a conveying mechanism, a vacuum mechanism, a lifting mechanism and a negative pressure mechanism are arranged on the platform;
the conveying mechanism stretches across the sealing frame, the lifting mechanism and the negative pressure mechanism are respectively installed on the sealing frame, the vacuum mechanism is connected with the sealing frame, a bag opening placed on the vacuum mechanism moves to the sealing frame, a manipulator adjusts the opening of the bag and inserts the lifting mechanism and the sealing frame, the negative pressure mechanism and the bag opening are mutually attracted, the vacuum mechanism inserts the bag opening to extract gas in the bag, and a heating sheet is installed in the lifting mechanism and used for sealing the bag opening.
Further, the conveying mechanism comprises a conveying belt and a rotating shaft, the rotating shaft is arranged at two ends of the platform, the conveying belt is sleeved on the rotating shaft, the rotating shaft is connected with the motor through a belt, and the rotating shaft drives the conveying belt to rotate; the vacuum mechanism comprises a vacuum pump, an air box, an air pipe and an anti-backflow mechanism, one end of the vacuum pump is connected with the air box, the other end of the air box is connected with the anti-backflow mechanism through the air pipe, the anti-backflow mechanism is inserted into the sealing frame, and the anti-backflow mechanism is positioned below the lifting mechanism; the lifting mechanism comprises a motor, a lead screw, a sliding rod and a pressing plate, the motor is fixed to the top end of the sealing frame, the motor is connected with one end of the lead screw through a shaft key, the other end of the lead screw is connected with the bottom of the sealing frame, the sliding rod is arranged in parallel with the lead screw and located at the other end of the sealing frame, the sliding rod and the lead screw penetrate through the pressing plate, the lead screw is meshed with the pressing plate, and the motor drives the lead screw to rotate so as to drive the pressing plate to ascend or.
Further, negative pressure mechanism includes negative pressure pipe, negative pressure pipe and negative pressure pump down, and the negative pressure pump is installed on the top of sealing the frame, and the one end of going up negative pressure pipe and negative pressure pipe down all connects on the negative pressure pump through the staple bolt, and the other end of going up negative pressure pipe and negative pressure pipe down connects in the bottom of clamp plate and sealing the frame to the mouth of pipe one-to-one of going up negative pressure pipe and negative pressure pipe down, wherein bag open-ended two sides decibel is inhaled by the mouth of pipe of negative pressure pipe and negative pressure pipe down mutually, and the bag open-ended is inserted by anti-reflux mechanism, and the vacuum pump extracts the interior gas of bag and forms the vacuum, and the clamp plate descends along lead screw and slide bar slip, and the clamp plate pushes down bag open-ended.
Further, the anti-backflow mechanism comprises a pipe body, a spring, an anti-backflow ball and a narrow opening portion, an outlet of the pipe body is connected with the air pipe, an inlet of the pipe body is fixed to the sealing frame, slotted holes with different hole diameters are machined in the pipe body, a large slotted hole is located in an outlet of the pipe body, a small slotted hole is located in an outlet of the pipe body, the narrow opening portion is fixed to the inner wall of the inlet of the pipe body, the spring and the anti-backflow ball are arranged in the large slotted hole, one end of the spring is fixed to the aperture of the large slotted hole, the other end of the spring is fixed to the anti-backflow ball, the narrow opening portion is sealed by the anti-backflow ball, the spring is driven to shrink by negative pressure generated when the vacuum pump is started, the anti.
Further, the port of the pipe body is staggered with the pressure plate in the vertical direction, and the pressure plate is lowered to the position that the distance between the lowest end and the pipe body is not more than 1 cm.
Further, the sensor is used for detecting the vacuum degree in the bag, and the narrow opening extends into the opening of the bag.
Further, the width of the pressure plate is less than 2cm, and the upper negative pressure pipe is arranged on the outer side of the heating sheet.
The technical scheme has the following advantages or beneficial effects:
1. the invention provides a bagged seed vacuum treatment device, wherein a conveying mechanism, a vacuum mechanism, a lifting mechanism and a negative pressure mechanism are all controlled by a PLC (programmable logic controller), a bag opening arranged on the vacuum mechanism moves to a sealing frame, a manipulator adjusts the opening of the bag to be inserted between the lifting mechanism and the sealing frame, the negative pressure mechanism is attracted with the bag opening, the vacuum mechanism is inserted into the bag opening to extract gas in the bag, and a heating sheet is arranged in the lifting mechanism to seal the bag opening.
2. The invention provides a vacuum treatment device for bagged seeds, which is characterized in that a vacuum pump works to extract gas in a gas box, so that the pumping vacuum degree of the gas box is obtained through the volume of the gas extracted in the gas box every time, and the vacuum treatment device is used for ensuring the consistency of the vacuum degrees of the seeds in the same batch in the process of carrying out vacuum treatment on different seeds in the same batch.
3. The invention provides a bagged seed vacuum treatment device, wherein a sliding rod and a lead screw are arranged in parallel and are positioned at the other end of a sealing frame, the sliding rod and the lead screw penetrate through a pressing plate, the lead screw is meshed with the pressing plate, a motor drives the lead screw to rotate to drive the pressing plate to ascend or descend, the pressing plate descends to the lowest end to press the two sides of an opening of a bag together, and meanwhile, a heating sheet is matched to seal the two ends of the bag.
4. The invention provides a bagged seed vacuum treatment device, wherein the other ends of an upper negative pressure pipe and a lower negative pressure pipe are connected with the bottoms of a pressing plate and a sealing frame, the pipe orifices of the upper negative pressure pipe and the lower negative pressure pipe are in one-to-one correspondence, two decibels of the two sides of an opening of a bag are sucked by the pipe orifices of the upper negative pressure pipe and the lower negative pressure pipe, the two ends of the bag are fixed by the upper negative pressure pipe and the lower negative pressure pipe, the opening of the bag is inserted by a backflow prevention mechanism, a narrow opening part is fixed on the inner wall of an inlet of a pipe body, a spring and a backflow prevention ball are arranged in a large slotted hole, one end of the spring is fixed with the caliber of the large slotted hole, the other end of the spring is fixed with the backflow prevention ball, the backflow prevention ball seals the narrow opening part, the spring is driven to shrink by negative pressure generated by starting a vacuum pump, the backflow prevention ball is separated, for subsequent vacuum replenishment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is an overall schematic diagram of a vacuum treatment apparatus for bagged seeds according to an embodiment of the present invention;
FIG. 2 is a view illustrating a state in which a lifting mechanism of the vacuum processing apparatus for bagged seeds according to an embodiment of the present invention is lifted;
FIG. 3 is a diagram illustrating a descending function of the lifting mechanism of the vacuum processing apparatus for bagged seeds according to an embodiment of the present invention;
FIG. 4 is a top view of a sealing frame of a vacuum processing apparatus for bagged seeds according to an embodiment of the present invention;
fig. 5 is a structural view of a backflow prevention mechanism of a vacuum processing apparatus for bagged seeds according to an embodiment of the present invention.
In the figure:
1. a support frame; 2. a manipulator; 3. a platform; 4. a conveying mechanism; 41. a conveyor belt; 42. a rotating shaft; 5. a vacuum mechanism; 51. a vacuum pump; 52. a gas tank; 53. an air tube; 54. a backflow prevention mechanism; 541. a pipe body; 542. a spring; 543. a backflow prevention ball; 544. a narrow mouth portion; 6. a lifting mechanism; 61. a motor; 62. a lead screw; 63. a slide bar; 64. pressing a plate; 7. a negative pressure mechanism; 71. an upper negative pressure pipe; 72. a lower negative pressure pipe; 73. a negative pressure pump; 8. a sealing frame; 9. and (4) heating the sheet.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
Referring to the attached drawings 1-5, a bagged seed vacuum treatment device comprises a support frame 1 and a manipulator 2, wherein a platform 3 is arranged between the support frames 1, the platform 3 is a rectangular plane, a conveying mechanism 4, a vacuum mechanism 5, a lifting mechanism 6 and a negative pressure mechanism 7 are arranged on the platform 3, the conveying mechanism 4, the vacuum mechanism 5, the lifting mechanism 6 and the negative pressure mechanism 7 are all controlled by a PLC, and the working time duration of the vacuum mechanism 5, the lifting mechanism 6 and the negative pressure mechanism 7 is related to a timer built in the PLC;
the conveying mechanism 4 is spanned with a sealing frame 8, the sealing frame 8 is connected with a sliding rail on the platform 3, the sealing frame 8 is adjusted along the sliding rail in a sliding mode and is used for adjusting the position of the sealing frame 8, the lifting mechanism 6 and the negative pressure mechanism 7 are respectively installed on the sealing frame 8, the vacuum mechanism 5 is connected with the sealing frame 8, a bag opening placed on the vacuum mechanism 5 moves to the sealing frame 8, the manipulator 2 adjusts the opening of the bag and inserts between the lifting mechanism 6 and the sealing frame 8, the negative pressure mechanism 7 is sucked with the bag opening, the vacuum mechanism 5 inserts into the bag opening to extract gas in the bag, and a heating sheet 9 is installed in the lifting mechanism 6 and is used for sealing the bag opening.
The conveying mechanism 4 comprises a conveying belt 41 and a rotating shaft 42, the rotating shaft 42 is installed at two ends of the platform 3, the conveying belt 41 is sleeved on the rotating shaft 42, the rotating shaft 42 is connected with the motor 61 through a belt, the rotating shaft 42 drives the conveying belt 41 to rotate, the conveying belt 41 drives the bag to move in the rotating process, so that the bag is conveyed to the sealing frame 8, and seeds are placed in the bag;
the vacuum mechanism 5 comprises a vacuum pump 51, an air box 52, an air pipe 53 and a backflow prevention mechanism 54, one end of the vacuum pump 51 is connected with the air box 52, the other end of the air box 52 is connected with the backflow prevention mechanism 54 through the air pipe 53, the backflow prevention mechanism 54 is inserted into the sealing frame 8, the backflow prevention mechanism 54 is positioned below the lifting mechanism 6, the vacuum pump 51 works to extract air in the air box 52, so that the pumping vacuum degree is obtained through the volume of the extracted air in the air box 52 every time, and the vacuum mechanism is used for ensuring the consistency of the vacuum degrees of the same batch of seeds in the process of carrying out vacuum treatment on different batches of seeds;
the lifting mechanism 6 comprises a motor 61, a screw 62, a sliding rod 63 and a pressing plate 64, the motor 61 is fixed on the top end of the sealing frame 8, the motor 61 is connected with one end of the screw 62 through a shaft key, the motor 61 drives the screw 62 to work and rotate, the other end of the screw 62 is connected with the bottom of the sealing frame 8, the sliding rod 63 is arranged in parallel with the screw 62 and is positioned at the other end of the sealing frame 8, the sliding rod 63 and the screw 62 both penetrate through the pressing plate 64, the screw 62 is meshed with the pressing plate 64, the motor 61 drives the screw 62 to rotate to drive the pressing plate 64 to ascend or descend, the pressing plate 64 descends to the lowest end to press the two sides of the opening of the bag together, and meanwhile, the heating plate 9;
the negative pressure mechanism 7 comprises an upper negative pressure pipe 71, a lower negative pressure pipe 72 and a negative pressure pump 73, the negative pressure pump 73 is arranged at the top end of the sealing frame 8, one end of each of the upper negative pressure pipe 71 and the lower negative pressure pipe 72 is connected on the negative pressure pump 73 through a hoop, the other end of each of the upper negative pressure pipe 71 and the lower negative pressure pipe 72 is connected at the bottom of the pressure plate 64 and the sealing frame 8, the pipe openings of the upper negative pressure pipe 71 and the lower negative pressure pipe 72 are in one-to-one correspondence, wherein two decibels of the bag opening are sucked by the pipe openings of the upper negative pressure pipe 71 and the lower negative pressure pipe 72, the two ends of the bag are fixed by the upper negative pressure pipe 71 and the lower negative pressure pipe 72, the bag opening is inserted by the backflow preventing mechanism 54, the vacuum pump 51 pumps gas in the bag to form vacuum, the pressure plate 64 descends along the screw 62 and the slide rod 63 in a sliding manner, the pressure plate 64 presses the, the heat patch 9 is used to seal the opening of the bag when the vacuum is drawn at standard level.
The backflow prevention mechanism 54 includes a tube body 541, a spring 542, a backflow prevention ball 543 and a narrow opening part 544, an outlet of the tube body 541 is connected with the air tube 53, an inlet of the tube body 541 is fixed on the sealing frame 8, slots with different apertures are processed inside the tube body 541, wherein a large slot is located at the outlet of the tube body 541, a small slot is located at the outlet of the tube body 541, the narrow opening part 544 is fixed on an inner wall of the inlet of the tube body 541, the spring 542 and the backflow prevention ball 543 are arranged in the large slot, one end of the spring 542 is fixed with the aperture of the large slot, the other end of the spring 542 is fixed with the backflow prevention ball 543, the backflow prevention ball 543 seals the narrow opening part 544, the backflow prevention ball 543 seals the opening of the narrow opening part 544 due to pressure generated by the backflow prevention ball 542, the negative pressure generated by the vacuum pump 51 drives the spring 542 to contract, and then the backflow prevention ball 543 is, and install the sensor on the inner wall of narrow mouth portion 544, the sensor is used for detecting the inside vacuum of its sack, detects for follow-up vacuum to utilize twice to detect vacuum and examine, thereby make the data that detect more accurate.
The port of the tube body 541 and the pressing plate 64 are staggered in the vertical direction, and the distance between the lowest end of the pressing plate 64 and the tube body 541 is not more than 1cm, before the sealing process of the pressing plate 64, the tube body 541 is still in the opening of the bag, gas in the bag is extracted until the heating sheet 9 in the pressing plate 64 works, and the generated high-temperature heat carries out instant high-temperature melting on the joint of the bag, so that the sealing purpose is realized.
The narrow mouth 544 extends into the bag opening for sensing the vacuum level within the bag.
The width of the pressing plate 64 is less than 2cm, the width of the arranged pressing plate 64 is not too large in the sealing process, the sealing width is also prevented from being too small, and the upper negative pressure pipe 71 is arranged on the outer side of the heating sheet 9.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (7)

1. A kind of seed vacuum treatment device in bags, characterized by: the manipulator comprises support frames (1) and a manipulator (2), wherein a platform (3) is arranged between the support frames (1), and a conveying mechanism (4), a vacuum mechanism (5), a lifting mechanism (6) and a negative pressure mechanism (7) are arranged on the platform (3);
the utility model discloses a bag sealing machine, including conveying mechanism (4), elevating system (6) and negative pressure mechanism (7), the last span of conveying mechanism (4) has sealed frame (8), install respectively on sealing frame (8) elevating system (6) and negative pressure mechanism (7), vacuum mechanism (5) with seal frame (8) and be connected, the sack opening of placing on vacuum mechanism (5) removes to sealing frame (8) on, manipulator (2) adjustment sack's opening inserts elevating system (6) and seals between frame (8), and negative pressure mechanism (7) inhale mutually with the sack opening, vacuum mechanism (5) insert in the sack opening and extract the sack in gaseous, and installation heating plate (9) are used for sealed sack opening in elevating system (6).
2. A bagged seed vacuum treatment device according to claim 1, characterized in that the conveying mechanism (4) comprises a conveying belt (41) and a rotating shaft (42), the rotating shaft (42) is installed on both ends of the platform (3), the conveying belt (41) is sleeved on the rotating shaft (42), the rotating shaft (42) is connected with a motor through a belt, and the rotating shaft (42) drives the conveying belt (41) to rotate; the vacuum mechanism (5) comprises a vacuum pump (51), an air box (52), an air pipe (53) and an anti-backflow mechanism (54), one end of the vacuum pump (51) is connected with the air box (52), the other end of the air box (52) is connected with the anti-backflow mechanism (54) through the air pipe (53), the anti-backflow mechanism (54) is inserted into the sealing frame (8), and the anti-backflow mechanism (54) is positioned below the lifting mechanism (6); elevating system (6) include motor (61), lead screw (62), slide bar (63) and clamp plate (64), motor (61) are fixed on the top of sealing frame (8), motor (61) are passed through the shaft key with the one end of lead screw (62) and are connected, the other end and the bottom of sealing frame (8) of lead screw (62) are connected, slide bar (63) and lead screw (62) parallel arrangement are located the other end of sealing frame (8), slide bar (63) all run through clamp plate (64) with lead screw (62), wherein, lead screw (62) and clamp plate (64) meshing, motor (61) drive lead screw (62) are rotatory to be used for driving clamp plate (64) to rise or descend.
3. The bagged seed vacuum treatment device according to claim 2, wherein the negative pressure mechanism (7) comprises an upper negative pressure pipe (71), a lower negative pressure pipe (72) and a negative pressure pump (73), the negative pressure pump (73) is installed at the top end of the sealing frame (8), one end of each of the upper negative pressure pipe (71) and the lower negative pressure pipe (72) is connected to the negative pressure pump (73) through a hoop, the other end of each of the upper negative pressure pipe (71) and the lower negative pressure pipe (72) is connected to the bottom of the pressing plate (64) and the sealing frame (8), the pipe openings of the upper negative pressure pipe (71) and the lower negative pressure pipe (72) are in one-to-one correspondence, wherein two decibels of the opening of the bag are sucked by the pipe openings of the upper negative pressure pipe (71) and the lower negative pressure pipe (72), the opening of the bag is inserted by the backflow prevention mechanism (54), and the vacuum pump (51) pumps gas in the bag to form vacuum, the pressing plate (64) descends along the screw rod (62) and the sliding rod (63) in a sliding mode, the pressing plate (64) presses two sides of the opening of the bag, and the heating sheet (9) is used for sealing the opening of the bag.
4. The vacuum treatment device for the bagged seeds as claimed in claim 3, wherein the backflow prevention mechanism (54) comprises a tube body (541), a spring (542), a backflow prevention ball (543) and a narrow opening portion (544), the outlet of the tube body (541) is connected with the air tube (53), the inlet of the tube body (541) is fixed on the sealing frame (8), slots with different diameters are processed inside the tube body (541), wherein a large slot is located at the outlet of the tube body (541), a small slot is located at the outlet of the tube body (541), the narrow opening portion (544) is fixed on the inner wall of the inlet of the tube body (541), the spring (542) and the backflow prevention ball (543) are arranged in the large slot, one end of the spring (542) is fixed with the large slot diameter, the other end of the spring (542) is fixed with the backflow prevention ball (543), and the backflow prevention ball (543) seals the narrow opening portion (544), the vacuum pump (51) is started to generate negative pressure to drive the spring (542) to contract, the backflow-preventing ball (543) is separated from the narrow opening portion (544) and used for extracting gas in the bag, and a sensor is mounted on the inner wall of the narrow opening portion (544).
5. A device for vacuum treatment of bagged seeds, according to claim 4, characterized in that the end of said tube (541) is vertically displaced from the pressure plate (64) and that said pressure plate (64) is lowered to a distance of not more than 1cm from the lowermost end of the tube (541).
6. A device for vacuum treatment of packed seeds according to claim 5, characterized in that the narrow mouth (544) extends into the bag opening for a sensor for detecting the vacuum in the bag.
7. A bagged seed vacuum treatment device according to claim 6, characterized in that the width of the press plate (64) is less than 2cm and the upper underpressure tube (71) is arranged outside the heat patch (9).
CN202110216878.9A 2021-02-26 2021-02-26 Vacuum treatment device for bagged seeds Pending CN112977939A (en)

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Application Number Priority Date Filing Date Title
CN202110216878.9A CN112977939A (en) 2021-02-26 2021-02-26 Vacuum treatment device for bagged seeds

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Application Number Priority Date Filing Date Title
CN202110216878.9A CN112977939A (en) 2021-02-26 2021-02-26 Vacuum treatment device for bagged seeds

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Publication Number Publication Date
CN112977939A true CN112977939A (en) 2021-06-18

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Application publication date: 20210618