Batching tank facilitating comprehensive cleaning of inner wall

By setting storage and driving components in the batching tank, the automatic uniform spraying and sealing guarantee of acid solution is achieved, and the safety hazards and sealing problems of inner wall cleaning in camel dairy products are solved, and the cleaning efficiency is improved.

CN223249213UActive Publication Date: 2025-08-22ULANQAB MENGDI DAIRY CO LTD
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Patent Information

Application Number
CN202521503517.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-18
Publication Date
2025-08-22
Estimated Expiration
2035-07-18

AI Technical Summary

Technical Problem

During the production process of camel dairy products, the cleaning of crystallized compounds in the inner wall of the batching tank has safety risks and affects the sealing properties. The prior art requires manual spraying of acidic solutions for cleaning.

Method used

A dispensing tank is designed, and a storage component is installed on the top of the inner wall. The drive component drives the rotation of the rotating jet assembly to achieve uniform spraying of the acid solution, and the sealing performance is ensured through the sealing component to avoid blockage of the nozzle.

Benefits of technology

The automatic dissolution of crystallized compounds in the inner wall of the ingredient can is achieved, avoiding safety hazards, and ensuring the sealing and cleaning efficiency of the ingredient can.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a batching tank facilitating comprehensive cleaning of an inner wall, and relates to the technical field of batching tank cleaning. The mixing device comprises a mixing tank, a storage assembly is arranged at the top of the inner wall of the mixing tank, a driving assembly is arranged on the outer side of the mixing tank, the driving end of the driving assembly is connected with the overturning end of the storage assembly, and a rotary spraying assembly is arranged at the overturning end of the storage assembly. According to the utility model, the rotary spraying assembly is rotated into the batching tank through the driving assembly, and meanwhile, the spraying end can rotate during spraying of an acid solution, so that the acid solution can be uniformly sprayed onto the inner wall of the batching tank; therefore, the effect of dissolving crystalline compounds adhered to the inner wall of the batching tank can be guaranteed, meanwhile, the whole process can be automatically and completely carried out in the batching tank, potential safety hazards cannot occur when the batching tank is cleaned, and the overall sealing performance of the batching tank can also be guaranteed.
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Description

Technical Field

[0001] The utility model belongs to the technical field of cleaning of batching tanks, and in particular relates to a batching tank with an inner wall that is convenient for comprehensive cleaning. Background Art

[0002] During the industrial production of camel milk products, since camel milk is rich in minerals such as calcium and magnesium, during the high-temperature sterilization and evaporation concentration process, the minerals will react with bicarbonate in the water to produce slightly soluble crystalline compounds such as calcium carbonate and magnesium carbonate. These substances will adhere to the inner wall of the stainless steel tank. In order to ensure the safety of food production, the inner wall needs to be cleaned regularly with an acidic solution.

[0003] When cleaning the crystalline compounds attached to the inner wall of the batching tank, the acidic solution is first sprayed onto the inner wall of the batching tank manually. Since the acidic solution is corrosive, there are certain safety hazards during the cleaning operation. In addition, the observation port of the batching tank needs to be opened during cleaning. The opening design is easily caused to reduce the sealing performance of the tank lining after frequent opening, thereby affecting the airtightness requirements of the materials in the production process. Utility Model Content

[0004] In view of the problem that when cleaning a batching tank, it is necessary to manually spray an acidic solution onto the inner wall of the batching tank, which poses certain safety hazards, the utility model proposes a batching tank that is easy to fully clean the inner wall, so as to overcome the above technical problems existing in the existing related technologies.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The utility model is a dispensing tank that is convenient for comprehensive cleaning of the inner wall, comprising a dispensing tank, a storage assembly is provided on the top of the inner wall of the dispensing tank, a driving assembly is provided on the outer side of the dispensing tank, a driving end of the driving assembly is connected to a flip end of the storage assembly, a rotating spray assembly is provided at the flip end of the storage assembly, and a sealing assembly is provided at the flip end of the storage assembly;

[0007] The driving assembly drives the rotating spray assembly to rotate through the flip end, so that the rotating spray assembly rotates out from the interior of the storage assembly and rotates into the interior of the batching tank. The spray end of the rotating spray assembly is used to spray the acidic solution onto the inner wall of the batching tank.

[0008] Furthermore, the storage assembly includes a through slot, which is opened on the top of the inner wall of the mixing tank. A storage box is fixedly connected to the top of the mixing tank corresponding to the through slot, and a flip plate is rotatably connected to the inside of the storage box.

[0009] Furthermore, the driving assembly includes a driving groove, which is opened at one end of the ingredient tank, and the driving groove is rotatably connected to the driving disk inside. The shaft head of the flip plate is fixedly connected to the driving disk. The outer surface of the ingredient tank is fixedly installed with an installation box corresponding to the driving disk. The installation box is rotatably connected to the driven gear inside. The driven gear is fixedly connected to the outer surface of the driving disk, and the outer surface of the driven gear is meshed with a driving gear.

[0010] Furthermore, a driving motor is fixedly installed on the outside of the installation box, the output end of the driving motor is fixedly connected to the driving gear, a first sealing groove is opened on the inner wall of the driving groove, a sealing ring is movably connected inside the first sealing groove, and the sealing ring is fixedly connected to the driving disk.

[0011] Furthermore, the rotating spraying assembly includes a support plate, two of which are fixedly connected to the bottom of the flip plate, a rotating tube is rotatably connected between the two support plates, a plurality of nozzles are fixedly connected to the outer surface of the rotating tube, one end of the rotating tube passes through the driving disk, a rotating motor is fixedly installed on the outer surface of the driving disk, and the output end of the rotating motor is fixedly connected to the rotating tube.

[0012] Furthermore, a transport pipe is fixedly connected to one side of the flip plate, the transport pipe is rotatably connected to the batching tank, a rotary joint is fixedly installed between one end of the transport pipe and the other end of the rotating pipe, and the other end of the transport pipe is fixedly connected to a connecting flange.

[0013] Furthermore, the sealing assembly includes a second sealing groove, a second sealing groove is opened on both sides of the flip plate, the second sealing groove passes through the storage box, the interior of the second sealing groove is movably connected to a sealing plate, the outer side of the sealing plate is fixedly connected to a shielding plate, the top of the shielding plate is fixedly connected to several driving frames, the top of the storage box is rotatably connected to a bidirectional screw, the bidirectional screw is threadedly connected to the corresponding driving frame, the top of the storage box is fixedly connected to a guide rod, the guide rod is movably connected to the corresponding driving frame, the outer side of the storage box is fixedly connected to a sealing motor, and the output end of the sealing motor is fixedly connected to the bidirectional screw.

[0014] The utility model has the following beneficial effects:

[0015] 1. The utility model rotates the rotary spray assembly into the interior of the batching tank through the driving assembly. At the same time, since the spray end can rotate when spraying the acidic solution, the acidic solution can be evenly sprayed onto the inner wall of the batching tank, thereby ensuring the effect of dissolving the crystalline compound adhered to the inner wall of the batching tank. At the same time, the entire process can be automatically completed in the batching tank, so that there will be no safety hazards when cleaning the batching tank, and the overall sealing of the batching tank can also be guaranteed.

[0016] 2. After the utility model rotates the rotating tube and the nozzle into the storage box through the flip plate, the sealing motor drives the driving frame through the bidirectional screw, so that the driving frame pushes the sealing plate into the second sealing groove through the shielding plate. The above arrangement makes it difficult for camel milk to seep into the interior of the storage box under the shielding of the flip plate during camel milk production, so that the nozzle inside the storage box will not be blocked by the camel milk. At the same time, when the inner wall of the ingredient tank is cleaned again later, the nozzle can spray out the acid solution normally.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a schematic diagram of the external outline structure of the utility model;

[0020] Figure 2 For the utility model Figure 1 Rear view structure diagram;

[0021] Figure 3 For the utility model Figure 2 A in the middle is an enlarged structural diagram;

[0022] Figure 4 For the utility model Figure 2 The enlarged structural diagram at B in the middle;

[0023] Figure 5 This is a schematic structural diagram of the rotary injection assembly of the present utility model;

[0024] Figure 6 For the utility model Figure 5 The enlarged structural diagram at C in the middle;

[0025] Figure 7 This is a structural diagram of the batching tank of the utility model;

[0026] Figure 8 For the utility model Figure 7 The enlarged structural diagram at D in the middle;

[0027] Figure 9 This is a schematic cross-sectional view of the batching tank of the present invention.

[0028] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0029] 1. Batching tank; 2. Storage assembly; 201. Through slot; 202. Storage box; 203. Flip plate; 3. Driving assembly; 301. Driving slot; 302. Driving disk; 303. Mounting box; 304. Driven gear; 305. Driving gear; 306. Driving motor; 307. First sealing groove; 308. Sealing ring; 4. Rotating spray assembly; 401. Support plate; 402. Rotating tube; 403. Spray head; 404. Rotating motor; 405. Transport tube; 406. Rotating joint; 407. Connecting flange; 5. Sealing assembly; 501. Second sealing groove; 502. Sealing plate; 503. Shielding plate; 504. Driving frame; 505. Bidirectional screw; 506. Guide rod; 507. Sealing motor. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the utility model embodiments in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the utility model embodiments, not all of the embodiments. Based on the utility model embodiments, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of utility model protection.

[0031] In the description of the present utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inside" and the like indicating orientation or positional relationship are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0032] See also Figures 1-9 As shown, the utility model is a batching tank that is convenient for comprehensive cleaning of the inner wall, comprising a batching tank 1, a receiving assembly 2 is provided on the top of the inner wall of the batching tank 1, a driving assembly 3 is provided on the outer side of the batching tank 1, a driving end of the driving assembly 3 is connected to the flip end of the receiving assembly 2, a rotating spray assembly 4 is provided at the flip end of the receiving assembly 2, and a sealing assembly 5 is provided at the flip end of the receiving assembly 2;

[0033] The driving assembly 3 drives the rotating spray assembly 4 to rotate through the flip end, so that the rotating spray assembly 4 rotates out from the inside of the storage assembly 2 and rotates into the inside of the batching tank 1. The spray end of the rotating spray assembly 4 is used to spray the acidic solution onto the inner wall of the batching tank 1.

[0034] When cleaning the inner wall of the batching tank 1, the flip end of the storage component 2 is driven by the driving component 3, so that the flip end drives the rotating spray component 4 to rotate out from the inside of the storage component 2, and the rotating spray component 4 is rotated into the inside of the batching tank 1, and then the injection end of the rotating spray component 4 is driven so that the injection end can rotate, and at the same time, the acidic solution injected from the injection end can be sprayed onto the inner wall of the batching tank 1, so that the acidic solution dissolves the substance adhered to the inner wall of the batching tank 1.

[0035] The rotating spray assembly 4 is rotated to the interior of the batching tank 1 by the driving assembly 3. At the same time, since the spray end can be rotated when spraying the acidic solution, the acidic solution can be evenly sprayed onto the inner wall of the batching tank 1, so that the effect of dissolving the crystalline compound adhered to the inner wall of the batching tank 1 can be guaranteed. At the same time, the entire process can be automatically completed inside the batching tank 1, so that there will be no safety hazards when cleaning the batching tank 1, and the overall sealing of the batching tank 1 can also be guaranteed.

[0036] In one embodiment, the above-mentioned storage component 2 includes a through groove 201, which is opened on the top of the inner wall of the ingredient tank 1. The top of the ingredient tank 1 is fixedly connected to the through groove 201, and the interior of the storage box 202 is rotatably connected to a flip plate 203.

[0037] The rotating spray assembly 4 is driven to rotate by the flip plate 203, so that the rotating spray assembly 4 is rotated into the interior of the batching tank 1 through the through slot 201; at the same time, the rotating spray assembly 4 can be placed inside the storage box 202 when not in use. At this time, the flip plate 203 can block the through slot 201, so that when camel milk is subsequently produced through the batching tank 1, the rotating spray assembly 4 will not be blocked due to camel milk.

[0038] In one embodiment, for the above-mentioned drive assembly 3, the drive assembly 3 includes a drive slot 301, the drive slot 301 is opened at one end of the ingredient tank 1, the internal rotation of the drive slot 301 is connected to the drive disk 302, the shaft head of the flip plate 203 is fixedly connected to the drive disk 302, the outer surface of the ingredient tank 1 is fixedly installed with an installation box 303 corresponding to the drive disk 302, the internal rotation of the installation box 303 is connected to the driven gear 304, the driven gear 304 is fixedly connected to the outer surface of the drive disk 302, and the outer surface of the driven gear 304 is meshed with a driving gear 305.

[0039] The driven gear 304 is driven to rotate by the driving gear 305, so that the driven gear 304 can drive the driving disk 302 to rotate inside the driving slot 301. At this time, the flip plate 203 can rotate inside the storage box 202 under the drive of the driving disk 302; the setting of driving the driving disk 302 to rotate by two gears does not block the surface of the driving disk 302, so that the driving end of the subsequent rotating injection assembly 4 can be normally installed on the driving disk 302.

[0040] In one embodiment, for the above-mentioned installation box 303, a drive motor 306 is fixedly installed on the outside of the installation box 303, the output end of the drive motor 306 is fixedly connected to the driving gear 305, and a first sealing groove 307 is opened on the inner wall of the driving groove 301. The interior of the first sealing groove 307 is movably connected with a sealing ring 308, and the sealing ring 308 is fixedly connected to the driving disk 302.

[0041] The driving motor 306 drives the driving gear 305 to rotate, so that the driving disk 302 can drive the flip plate 203 to automatically flip; when the driving disk 302 rotates, the sealing ring 308 can rotate inside the first sealing groove 307 driven by the driving disk 302. The setting of the sealing ring 308 and the first sealing groove 307 ensures the sealing between the driving disk 302 and the driving groove 301.

[0042] In one embodiment, for the above-mentioned rotating spraying assembly 4, the rotating spraying assembly 4 includes a support plate 401, two of which are fixedly connected to the bottom of the flip plate 203, and a rotating tube 402 is rotatably connected between the two support plates 401. A plurality of nozzles 403 are fixedly connected to the outer surface of the rotating tube 402, and one end of the rotating tube 402 passes through the driving disk 302. A rotating motor 404 is fixedly installed on the outer surface of the driving disk 302, and the output end of the rotating motor 404 is fixedly connected to the rotating tube 402.

[0043] After the transport pipe 405 is rotated into the interior of the batching tank 1 by the driving disk 302 and the flip plate 203, the transport pipe 405 is rotated to drive the rotating motor 404, so that the transport pipe 405 can drive the multiple nozzles 403 to rotate under the drive of the rotating motor 404. Since the nozzles 403 can rotate, the acidic solution sprayed from the nozzles 403 can fully cover the inner wall of the batching tank 1, thereby ensuring the effect of cleaning the inner wall of the batching tank 1; a discharge pipe is provided at the bottom of the batching tank 1. When the acidic solution completes dissolving the tank wall material, these dissolved materials will fall to the bottom of the tank under the subsequent flushing of the acidic solution, and the acidic solution and dissolved materials accumulated at the bottom of the tank can be discharged from the inside of the batching tank 1 through the discharge pipe.

[0044] In one embodiment, for the above-mentioned flip plate 203, a transport pipe 405 is fixedly connected to one side of the flip plate 203, and the transport pipe 405 is rotatably connected to the batching tank 1. A rotary joint 406 is fixedly installed between one end of the transport pipe 405 and the other end of the rotating tube 402, and the other end of the transport pipe 405 is fixedly connected to a connecting flange 407.

[0045] The connecting flange 407 can be connected to an external delivery pipe, so that the acidic solution can flow into the interior of the rotating tube 402 through the external delivery pipe and the transport pipe 405; because the transport pipe 405 and the rotating tube 402 are connected together through the rotary joint 406, when the rotating tube 402 rotates, the acidic solution inside the transport pipe 405 can flow normally into the interior of the rotating tube 402, and the sealing of the connection between the two can be guaranteed.

[0046] In one embodiment, for the above-mentioned sealing assembly 5, the sealing assembly 5 includes a second sealing groove 501, and a second sealing groove 501 is opened on both sides of the flip plate 203. The second sealing groove 501 passes through the storage box 202, and the interior of the second sealing groove 501 is movably connected with a sealing plate 502. The outer side of the sealing plate 502 is fixedly connected with a shielding plate 503, and the top of the shielding plate 503 is fixedly connected with several driving frames 504. The top of the storage box 202 is rotatably connected with a bidirectional screw 505, and the bidirectional screw 505 is threadedly connected to the corresponding driving frame 504. The top of the storage box 202 is fixedly connected with a guide rod 506, and the guide rod 506 is movably connected to the corresponding driving frame 504. The outer side of the storage box 202 is fixedly connected with a sealing motor 507, and the output end of the sealing motor 507 is fixedly connected to the bidirectional screw 505.

[0047] After the flip plate 203 is flipped and the rotating tube 402 and the nozzle 403 are rotated into the interior of the storage box 202, the sealing motor 507 is driven, so that the sealing motor 507 drives the two driving frames 504 to move through the bidirectional screw 505, and the driving frame 504 pushes the sealing plate 502 through the baffle plate 503, so that the sealing plate 502 can be moved to the interior of the second sealing groove 501. At this time, the sealing plate 502 cooperates with the second sealing groove 501, so that the sealing between the flip plate 203 and the storage box 202 can be guaranteed. In addition, the top of the ingredient tank 1 set on the storage box 202 makes it difficult for camel milk to penetrate into the interior of the storage box 202 during the subsequent camel milk production.

[0048] According to the above technical solution, 1. the rotating spray assembly 4 is rotated to the inside of the batching tank 1 by the driving assembly 3. At the same time, since the spray end can be rotated when spraying the acidic solution, the acidic solution can be evenly sprayed onto the inner wall of the batching tank 1, so that the effect of dissolving the crystalline compound adhered to the inner wall of the batching tank 1 can be guaranteed. At the same time, the whole process can be automatically completed in the batching tank 1, so that there will be no safety hazards when cleaning the batching tank 1, and the overall sealing of the batching tank 1 can also be guaranteed; 2. the rotating tube 4 is rotated by the flip plate 203. After 402 and the nozzle 403 rotate to the inside of the storage box 202, the sealing motor 507 drives the driving frame 504 through the bidirectional screw 505, so that the driving frame 504 pushes the sealing plate 502 to the inside of the second sealing groove 501 through the shielding plate 503. The above arrangement makes it difficult for camel milk to seep into the inside of the storage box 202 under the shielding of the flip plate 203 during the production of camel milk, so that the nozzle 403 inside the storage box 202 will not be blocked by the camel milk. At the same time, when the inner wall of the ingredient tank is cleaned again later, the nozzle can spray out the acidic solution normally.

[0049] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the utility model. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0050] The preferred embodiments of the utility model disclosed above are intended only to help illustrate the utility model. The preferred embodiments do not describe all details in detail, nor do they limit the utility model to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. This specification selects and describes these embodiments in detail to better explain the principles and practical applications of the utility model, thereby enabling those skilled in the art to better understand and utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A batching tank that facilitates comprehensive cleaning of the inner wall, comprising a batching tank (1), characterized in that: A receiving assembly (2) is provided on the top of the inner wall of the mixing tank (1), a driving assembly (3) is provided on the outer side of the mixing tank (1), a driving end of the driving assembly (3) is connected to the flip end of the receiving assembly (2), a rotating spraying assembly (4) is provided at the flip end of the receiving assembly (2), and a sealing assembly (5) is provided at the flip end of the receiving assembly (2); The driving assembly (3) drives the rotating spray assembly (4) to rotate through the flip end, so that the rotating spray assembly (4) rotates out from the interior of the storage assembly (2) and rotates into the interior of the batching tank (1). The spray end of the rotating spray assembly (4) is used to spray the acid solution onto the inner wall of the batching tank (1).

2. A batching tank that facilitates comprehensive cleaning of the inner wall according to claim 1, characterized in that: The storage assembly (2) comprises a through slot (201), the through slot (201) being formed on the top of the inner wall of the batching tank (1), a storage box (202) being fixedly connected to the top of the batching tank (1) corresponding to the through slot (201), and a flip plate (203) being rotatably connected to the interior of the storage box (202).

3. A batching tank that facilitates comprehensive cleaning of the inner wall according to claim 2, characterized in that: The driving assembly (3) comprises a driving slot (301), the driving slot (301) being opened at one end of the batching tank (1), the driving disc (302) being rotatably connected to the interior of the driving slot (301), the shaft head of the flip plate (203) being fixedly connected to the driving disc (302), a mounting box (303) being fixedly mounted on the outer surface of the batching tank (1) corresponding to the driving disc (302), the interior of the mounting box (303) being rotatably connected to a driven gear (304), the driven gear (304) being fixedly connected to the outer surface of the driving disc (302), and the outer surface of the driven gear (304) being meshed with a driving gear (305).

4. A batching tank that facilitates comprehensive cleaning of the inner wall according to claim 3, characterized in that: A driving motor (306) is fixedly mounted on the outside of the installation box (303), and the output end of the driving motor (306) is fixedly connected to the driving gear (305). A first sealing groove (307) is formed on the inner wall of the driving groove (301), and a sealing ring (308) is movably connected inside the first sealing groove (307), and the sealing ring (308) is fixedly connected to the driving disc (302).

5. A batching tank that facilitates comprehensive cleaning of the inner wall according to claim 3, characterized in that: The rotating spray assembly (4) comprises a support plate (401), two of the support plates (401) are fixedly connected to the bottom of the flip plate (203), a rotating tube (402) is rotatably connected between the two support plates (401), a plurality of nozzles (403) are fixedly connected to the outer surface of the rotating tube (402), one end of the rotating tube (402) passes through the driving disk (302), a rotating motor (404) is fixedly installed on the outer surface of the driving disk (302), and an output end of the rotating motor (404) is fixedly connected to the rotating tube (402).

6. A batching tank that facilitates comprehensive cleaning of the inner wall according to claim 5, characterized in that: A transport pipe (405) is fixedly connected to one side of the flip plate (203), and the transport pipe (405) is rotatably connected to the batching tank (1). A rotary joint (406) is fixedly installed between one end of the transport pipe (405) and the other end of the rotating pipe (402), and the other end of the transport pipe (405) is fixedly connected to a connecting flange (407).

7. A batching tank that facilitates comprehensive cleaning of the inner wall according to claim 2, characterized in that: The sealing assembly (5) includes a second sealing groove (501), and the second sealing groove (501) is provided on both sides of the flip plate (203). The second sealing groove (501) passes through the storage box (202). The interior of the second sealing groove (501) is movably connected to the sealing plate (502), the outer side of the sealing plate (502) is fixedly connected to a shielding plate (503), the top of the shielding plate (503) is fixedly connected to a plurality of driving frames (504), the top of the storage box (202) is rotatably connected to a bidirectional screw (505), the bidirectional screw (505) is threadedly connected to the corresponding driving frame (504), the top of the storage box (202) is fixedly connected to a guide rod (506), the guide rod (506) is movably connected to the corresponding driving frame (504), the outer side of the storage box (202) is fixedly connected to a sealing motor (507), and the output end of the sealing motor (507) is fixedly connected to the bidirectional screw (505).