Vacuum filtering tank cleaning device for plastic film production

By introducing a structure in the vacuum filter tank that uses a cylinder-driven scraper to clean the jacket and condenser plate, combined with cooling water cooling, the problem of difficult cleaning of the vacuum filter tank is solved, and production efficiency and equipment stability are improved.

CN223945274UActive Publication Date: 2026-02-27SHANGHAI DAOWA VACUUM TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202520375802.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-05
Publication Date
2026-02-27
Estimated Expiration
2035-03-05

AI Technical Summary

Technical Problem

In the production of plastic film, oligomers adhering to the jacket and condenser plate of the vacuum filter tank are difficult to clean efficiently, resulting in downtime for cleaning, which is time-consuming and labor-intensive and affects production efficiency.

Method used

A vacuum filter tank cleaning device is designed, which uses a cylinder-driven scraper to clean the surface of the jacket and condenser plate. Combined with the cooling water cooling function, the scraper structure is optimized to improve cleaning efficiency, and a sealing structure is used to prevent impurities from entering.

Benefits of technology

This technology enables efficient and automatic cleaning of vacuum filter tanks, reducing downtime and improving production efficiency and stable operation of the equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a vacuum filter tank cleaning device for plastic film production, which comprises a filter tank main body and an end cover arranged on the filter tank main body, a jacket is arranged in the filter tank main body, and a condensation plate is arranged on the end cover; the air cylinders are arranged on the end cover, and the air cylinders are arranged on the two sides of the condensation plate; the scrapers A are arranged on the two sides of the condensation plate in a sliding manner; and the scraper B is arranged on the scraper A. The air cylinder pushes the scraper A and the scraper B to clean the inner wall of the clamping sleeve at the same time, according to the vacuum filtering tank cleaning device for plastic film production, the air cylinder on the end cover can push the scraper A and the scraper B to clean the inner wall of the clamping sleeve and the surface of the condensation plate, and high efficiency and convenience are achieved. The guide strips on the two sides of the condensation plate enable the scraper A to slide more smoothly, and the arc-shaped structure of the scraper B can be better attached to the cleaning surface. The sealing shaft sleeve and the dustproof sleeve can prevent impurities from entering, and stable operation of the device is guaranteed.
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Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of cleaning device, concretely relates to a vacuum filter tank cleaning device for plastic film production. BACKGROUND

[0002] Plastic film extrusion vacuum degassing is applied to condensation filtration of BOPP, BOPET, BOPC, BOPA and the modification degassing filtration of ABS, PC, PET and other raw materials, and a large amount of additives are added in the plastic extrusion raw material, part of the oligomers and moisture contained in the material will enter the vacuum pump in the vacuum air extraction process, causing the vacuum pump to be blocked, so a filter system is added before the vacuum pump.

[0003] In long-term continuous filtration operation, a large amount of oligomers will continuously adhere to the jacket and condenser plate and other tank wall parts of the vacuum filter tank. The adhesion of these oligomers is large, and the distribution range is wide, and with the accumulation of time, the thickness of the adhesion is also increasing, which inevitably needs to be stopped for cleaning, consuming a large amount of time cost and labor, and therefore a vacuum filter tank cleaning device for plastic film production is proposed. SUMMARY

[0004] The purpose of the utility model is to solve the above problems and provide a stable operation vacuum filter tank cleaning device for plastic film production.

[0005] The utility model realizes the above-mentioned purpose through the following technical scheme:

[0006] A vacuum filter tank cleaning device for plastic film production, comprising a filter tank main body and an end cover arranged on the filter tank main body, a jacket is arranged in the filter tank main body, and a condenser plate is arranged on the end cover.

[0007] Further comprising:

[0008] A cylinder is arranged on the end cover, and the cylinder is arranged on both sides of the condenser plate.

[0009] A scraper A is slidingly arranged on both sides of the condenser plate.

[0010] A scraper B is arranged on the scraper A, and the scraper A and the scraper B are simultaneously pushed by the cylinder to clean the inner wall of the jacket.

[0011] As a further optimization scheme of the utility model, guide strips are arranged on both sides of the condenser plate, the scraper A is slidingly arranged on the condenser plate through the guide strips, a connecting plate is arranged on the scraper A, a V-shaped frame is arranged on the connecting plate, the connecting plate is connected with the scraper B through the V-shaped frame, and the scraper B is in an arc structure.

[0012] As a further optimization scheme of the utility model, the end cover is provided with a sealing shaft sleeve, the cylinder output end penetrates the end cover through the sealing shaft sleeve, the cylinder output end is connected with the connecting plate, a dustproof sleeve is arranged between the connecting plate and the sealing shaft sleeve, and the dustproof sleeve is arranged on the cylinder output end.

[0013] As a further optimization scheme of the utility model, the condensing plate is provided with a cavity, the cavity is provided with a baffle, and the end cover is provided with two water outlets A connected with the cavity.

[0014] As a further optimization scheme of the utility model, a gap is reserved between the filter tank body and the jacket, and threads are arranged on the jacket.

[0015] As a further optimization scheme of the utility model, a plurality of water outlets B are arranged on the filter tank body, the water outlets B are communicated with the gap between the filter tank body and the jacket, feed pipes and discharge pipes are arranged on the two sides of the filter tank body respectively, the feed pipes and the discharge pipes are arranged on the two sides of the condensing plate respectively, and the lower end of the condensing plate is reserved at a distance from the bottom end of the jacket.

[0016] The utility model has the advantages that:

[0017] Different from the prior art, in actual use, the cylinder on the end cover can push the scraper A and the scraper B to clean the inner wall of the jacket and the surface of the condensing plate, and the process is efficient and convenient. The guide strips on the two sides of the condensing plate make the scraper A slide more smoothly, and the arc-shaped structure of the scraper B can better adhere to the surface for cleaning. The sealing shaft sleeve and the dustproof sleeve can prevent impurities from entering and ensure stable operation of the device. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure schematic diagram of the utility model;

[0019] Figure 2 It is a filter tank body local section structure schematic diagram of the utility model;

[0020] Figure 3 It is a filter tank body perspective structure schematic diagram of the utility model;

[0021] Figure 4 It is a scraper B connection structure schematic diagram of the utility model;

[0022] Figure 5 It is a condensing plate local section structure schematic diagram of the utility model.

[0023] In the diagram: 1. Filter tank body; 2. End cap; 3. Jacket; 31. Thread; 4. Cylinder; 41. Sealing bushing; 5. Scraper A; 51. Guide bar; 6. Scraper B; 61. Connecting plate; 62. V-shaped frame; 7. Condensing plate; 71. Cavity; 72. Baffle plate; 73. Sprue A; 8. Dust cover; 9. Feed pipe; 10. Discharge pipe; 11. Sprue B. Detailed Implementation

[0024] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0025] Example 1

[0026] like Figure 1 - Figure 5 As shown, a vacuum filter tank cleaning device for plastic film production includes a filter tank body 1 and an end cap 2 disposed on the filter tank body 1. A jacket 3 is disposed inside the filter tank body 1, and a condensation plate 7 is disposed on the end cap 2.

[0027] It also includes:

[0028] Cylinder 4 is mounted on end cover 2 and on both sides of condenser plate 7.

[0029] Scraper A5 is slidably disposed on both sides of condenser plate 7;

[0030] Scraper B6 is mounted on scraper A5. Scraper A5 and scraper B6 are pushed simultaneously by cylinder 4 to clean the inner wall of jacket 3.

[0031] Guide strips 51 are provided on both sides of the condenser plate 7. The scraper A5 is slidably mounted on the condenser plate 7 via the guide strips 51. A connecting plate 61 is provided on the scraper A5, and a V-shaped bracket 62 is provided on the connecting plate 61. The V-shaped bracket 62 and the scraper B6 form a triangular structure, which enhances the connection stability of the scraper B6. The connecting plate 61 is connected to the scraper B6 via the V-shaped bracket 62. The scraper B6 has an arc-shaped structure. The scraper A5 slides smoothly via the guide strips 51 on both sides of the condenser plate 7. The scraper B6 has an arc-shaped structure, which has a high degree of contact with the inner wall of the jacket 3 and the surface of the condenser plate 7, and can effectively clean the attached oligomers.

[0032] The end cover 2 is provided with a sealing sleeve 41, the output end of the cylinder 4 penetrates the end cover 2 through the sealing sleeve 41, the output end of the cylinder 4 is connected with a connecting plate 61, a dust cover 8 is arranged between the connecting plate 61 and the sealing sleeve 41, the dust cover 8 is sleeved on the output end of the cylinder 4, the sealing sleeve 41 ensures the sealing when the output end of the cylinder 4 penetrates the end cover 2, the dust cover 8 is sleeved on the output end of the cylinder 4 and located between the connecting plate 61 and the sealing sleeve 41, which can effectively prevent impurities from entering the inside of the device and ensure the stable operation of the device.

[0033] The condensing plate 7 is provided with a cavity 71, the cavity 71 is provided with a baffle 72, the end cover 2 is provided with two water outlets A73, the water outlets A73 are connected with the cavity 71, the cavity 71 provided in the condensing plate 7 is provided with the baffle 72 and connected with the two water outlets A73 on the end cover 2, cooling water can be introduced through the water outlets A73, the cooling water is guided in the cavity 71 through the baffle 72, the cooling function of the condensing plate 7 is realized, a large amount of oligomers are adhered to the surface of the condensing plate 7, and subsequent cleaning is facilitated.

[0034] The filter tank body 1 and the jacket 3 are left with a certain gap, the jacket 3 is provided with threads 31, and cooling water is left in contact with the inner wall of the filter tank body 1 along the threads 31, so that the heat exchange area is increased.

[0035] A plurality of water outlets B11 are arranged on the filter tank body 1, the water outlets B11 are communicated with the gap between the filter tank body 1 and the jacket 3, one of the water outlets B11 and the water outlet A73 are connected through a connecting pipe (not shown in the figure), and the other water outlet B11 is used for pouring cooling water, and the other water outlet A73 is used for discharging cooling water, the filter tank body 1 is provided with a feeding pipe 9 and a discharging pipe 10 on the two sides respectively, the feeding pipe 9 and the discharging pipe 10 are located on the two sides of the condensing plate 7 respectively, and the lower end of the condensing plate 7 is left with a certain distance from the bottom end of the jacket 3, so that the material can flow in the device, and the smooth production process is ensured.

[0036] It should be noted that when cleaning is needed, the air cylinder 4 on both sides of the condensing plate 7 on the end cover 2 is started, the output end of the air cylinder 4 penetrates the end cover 2 through the sealing shaft sleeve 41, pushes the connecting plate 61 connected with the output end, and then drives the scraper A5 to slide along the guide strip 51 on both sides of the condensing plate 7, the scraper B6 connected with the scraper A5 through the V-shaped frame 62 is also moved, since the scraper B6 is an arc-shaped structure, the air cylinder 4 simultaneously pushes the scraper A5 and the scraper B6 to clean the surface of the condensing plate 7 and the inner wall of the jacket 3, and in the working process of the air cylinder 4, the dustproof sleeve 8 between the connecting plate 61 and the sealing shaft sleeve 41 can prevent impurities from entering, in addition, the cavity 71 in the condensing plate 7 is provided with a baffle 72, two water outlets A73 on the end cover 2 are connected with the cavity 71, and cooling water can be introduced through the water outlet A73, the cooling water is guided in the cavity 71 through the baffle 72, and the cooling function of the condensing plate 7 is realized; and then a large amount of oligomers adhere to the surface of the condensing plate 7, a plurality of water outlets B11 on the filter tank body 1 are communicated with the gap between the filter tank body 1 and the jacket 3, and can be used for introducing cooling water to further cool the inside of the device, one of the water outlets B11 and the water outlet A73 are connected, and the other water outlet B11 is used for pouring cooling water, the other water outlet A73 is used for discharging cooling water, and the lower end of the condensing plate 7 and the bottom end of the jacket 3 are left at a certain distance, facilitating the circulation of materials.

[0037] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as limiting the scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of protection of the present application.

Claims

1. A cleaning device for a vacuum filter tank used in plastic film production, comprising a filter tank body (1) and an end cover (2) arranged on the filter tank body (1), characterized in that: The filter tank body (1) is provided with a jacket (3), and the end cover (2) is provided with a condensation plate (7); Further comprising: A cylinder (4) is arranged on the end cover (2), and the cylinder (4) is arranged on both sides of the condensation plate (7); A scraper A (5) is slidingly arranged on both sides of the condensation plate (7); A scraper B (6) is arranged on the scraper A (5), and the scraper A (5) and the scraper B (6) are simultaneously pushed by the cylinder (4) to clean the inner wall of the jacket (3).

2. The cleaning device for a vacuum filter tank for plastic film production according to claim 1, characterized in that: Both sides of the condensation plate (7) are provided with guide bars (51), the scraper A (5) is slidingly arranged on the condensation plate (7) through the guide bars (51), the scraper A (5) is provided with a connecting plate (61), the connecting plate (61) is provided with a V-shaped frame (62), the connecting plate (61) is connected with the scraper B (6) through the V-shaped frame (62), and the scraper B (6) is in an arc structure.

3. The cleaning device for a vacuum filter tank for plastic film production according to claim 2, characterized in that: The end cover (2) is provided with a sealing bushing (41), the output end of the cylinder (4) penetrates the end cover (2) through the sealing bushing (41), the output end of the cylinder (4) is connected with the connecting plate (61), and a dustproof sleeve (8) is arranged between the connecting plate (61) and the sealing bushing (41), and the dustproof sleeve (8) is sleeved on the output end of the cylinder (4).

4. The cleaning device for a vacuum filter tank used in plastic film production according to claim 1, characterized in that: The condensation plate (7) is provided with a cavity (71), the cavity (71) is provided with a baffle (72), and the end cover (2) is provided with two water outlets A (73), and the water outlets A (73) are connected with the cavity (71).

5. The cleaning device for a vacuum filter tank for plastic film production according to claim 1, characterized in that: The filter tank body (1) and the jacket (3) are left with a certain gap, and the jacket (3) is provided with threads (31).

6. The cleaning device for a vacuum filter tank for plastic film production according to claim 5, characterized in that: A plurality of water outlets B (11) are arranged on the filter tank body (1), the water outlets B (11) are communicated with the gap between the filter tank body (1) and the jacket (3), and the filter tank body (1) is provided with a feeding pipe (9) and a discharging pipe (10) on both sides, respectively. The feeding pipe (9) and the discharging pipe (10) are respectively located on both sides of the condensation plate (7), and the lower end of the condensation plate (7) is left with a certain distance from the bottom end of the jacket (3).