Ultrafiltration device applied to coating processing

Abstract

The utility model relates to the technical field of coating processing, and discloses an ultrafiltration device applied to coating processing, which comprises a filtering structure, a cleaning structure and a pushing structure, the cleaning structure and the pushing structure are respectively arranged on the filtering structure, the cleaning structure comprises a frame, a semi-permeable membrane, a connecting shaft, a threaded seat and a spray pipe, the frame is rotationally connected with the side wall of the filter box through a connecting shaft, the semi-permeable membrane is fixedly installed in the frame, a handle is fixedly installed at one end of the connecting shaft, a cylinder is fixedly installed at the other end of the connecting shaft, limiting holes are formed in the cylinder at equal intervals, a screw is installed on a threaded seat in a threaded mode, and a water inlet pipe and a spray head are installed on a spray pipe. According to the utility model, the cleaning structure is arranged, water is sprayed out through the spray head, and the sprayed water is used for flushing the semipermeable membrane, so that impurities such as particles and colloids adhered to the semipermeable membrane can be effectively flushed, the membrane flux is recovered, a coating can pass through the semipermeable membrane more smoothly, and the ultrafiltration efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of coating processing technology, and in particular to an ultrafiltration device for use in coating processing. Background Technology

[0002] In the coating processing, traditional filtration methods are often ineffective in removing fine particles and high molecular impurities, affecting the stability of the coating and the final coating quality. To improve the purity and performance of coatings, ultrafiltration technology has been introduced into this field. Ultrafiltration devices use semi-permeable membranes to selectively separate liquids under certain pressure, which can efficiently retain large molecules and impurities while allowing small molecule solvents and some additives to pass through, thereby significantly improving the quality and storage stability of coatings. This technology has gradually become one of the key processes in modern coating manufacturing.

[0003] In existing technologies, coatings are ultrafiltered using semi-permeable membranes. However, after long-term use, impurities such as particles and colloids accumulate on the surface of the semi-permeable membrane, leading to increased clogging, a rapid decrease in filtration flux, a short service life, and high operating costs. Utility Model Content

[0004] In view of the problems of existing semipermeable membranes, such as the long-term accumulation of particles, colloids and other impurities on the surface after long-term use, which leads to increased clogging, rapid decline in filtration flux, short service life and high operating costs, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide an ultrafiltration device for coating processing. The purpose is to address the issue that after long-term use, impurities such as particles and colloids accumulate on the surface of the semipermeable membrane, leading to increased clogging, a rapid decrease in filtration flux, a short service life, and high operating costs.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an ultrafiltration device for coating processing, comprising a filtration structure, a cleaning structure, and a driving structure. The cleaning structure and the driving structure are respectively installed on the filtration structure. The cleaning structure includes a frame, a semi-permeable membrane, a connecting shaft, a threaded seat, and a nozzle. The frame is rotatably connected to the side wall of the filter box via the connecting shaft. The semi-permeable membrane is fixedly installed inside the frame. A handle is fixedly installed at one end of the connecting shaft, and a cylinder is fixedly installed at the other end. Limiting holes are provided at equal intervals on the cylinder. A screw is threadedly installed on the threaded seat. A water inlet pipe and a nozzle are installed on the nozzle.

[0007] As a preferred embodiment of the ultrafiltration device for coating processing described in this utility model, the filtration structure includes a filter box, a support column, a top cover, and a feeding hopper. The support column is fixedly installed at the bottom of the filter box, the top cover is detachably installed at the top of the filter box, and the feeding hopper is installed at the top of the top cover.

[0008] In a preferred embodiment of the ultrafiltration device for coating processing described in this utility model, the connecting shafts are respectively fixedly installed at both ends of the frame, and the connecting shafts extend through the side wall of the filter box to the outside of the filter box.

[0009] As a preferred embodiment of the ultrafiltration device for coating processing described in this utility model, the threaded seat is fixedly installed on the outer wall of the filter box, the screw and the limiting hole are adapted to each other, the spray pipe is fixedly installed at the bottom of the top cover, the water inlet pipe is connected to the top of the spray pipe, and the nozzle is fixedly installed at the bottom of the spray pipe.

[0010] As a preferred embodiment of the ultrafiltration device for coating processing described in this utility model, the pushing structure includes a sealing box and a support frame, which are respectively fixedly installed on one side of the filter box.

[0011] As a preferred embodiment of the ultrafiltration device for coating processing described in this utility model, wherein: an electric push rod is fixedly installed on the support frame, a push plate is fixedly installed on the telescopic end of the electric push rod, a guide rod is fixedly installed on one side of the push plate, the guide rod extends through the sealing box to the outside of the sealing box, and the guide rod is slidably connected to the side wall of the sealing box.

[0012] The beneficial effects of this utility model are:

[0013] 1. Through the designed cleaning structure, the handle drives the frame to rotate via the connecting shaft, causing the frame to rotate 180°. The screw extends into the limiting hole to reposition the cylinder, preventing the frame from rotating. Water is then sprayed out through the nozzle, rinsing the semi-permeable membrane. This effectively washes away particles, colloids, and other impurities adhering to the semi-permeable membrane, restoring membrane flux. Coatings can then pass through the semi-permeable membrane more smoothly, improving ultrafiltration efficiency, accelerating coating processing speed, increasing production efficiency, avoiding frequent disassembly and cleaning, and reducing manual maintenance intensity.

[0014] 2. Through the set push structure, the push plate is moved by the telescopic rod of the electric push rod. The push plate moves on the semi-permeable membrane, thereby promoting the flow of coating, promoting continuous contact and renewal between coating and semi-permeable membrane, reducing concentration polarization, ensuring uniform thickness of the liquid layer, allowing the accumulated coating to flow and redistribute, effectively covering the entire membrane surface, and helping to maintain a constant permeation rate and separation effect. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the present invention;

[0018] Figure 3 This is a schematic diagram of the cleaning structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the nozzle of this utility model;

[0020] Figure 5 This is a schematic diagram of the pushing structure of this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Filter structure; 11. Filter box; 12. Support column; 13. Top cover; 14. Feed hopper; 2. Cleaning structure; 201. Frame; 202. Semi-permeable membrane; 203. Connecting shaft; 204. Handle; 205. Cylindrical part; 206. Threaded seat; 207. Screw; 208. Spray pipe; 209. Water inlet pipe; 210. Nozzle; 3. Pushing structure; 31. Sealing box; 32. Support frame; 33. Electric push rod; 34. Push plate; 35. Guide rod. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] Example 1

[0025] Refer to attached figure Figure 1 - Appendix Figure 4 This is the first embodiment of the present invention, which provides an ultrafiltration device for coating processing, including a filtration structure 1, a cleaning structure 2 and a pushing structure 3. The cleaning structure 2 and the pushing structure 3 are respectively installed on the filtration structure 1. The filtration structure 1 includes a filter box 11, a support column 12, a top cover 13 and a feeding hopper 14. The support column 12 is fixedly installed at the bottom of the filter box 11, the top cover 13 is detachably installed at the top of the filter box 11, and the feeding hopper 14 is installed at the top of the top cover 13.

[0026] The cleaning structure 2 includes a frame 201, a semi-permeable membrane 202, a connecting shaft 203, a threaded seat 206, and a nozzle 208. The connecting shaft 203 is fixedly installed at both ends of the frame 201. The connecting shaft 203 extends through the side wall of the filter box 11 to the outside of the filter box 11. The frame 201 is rotatably connected to the side wall of the filter box 11 through the connecting shaft 203. The semi-permeable membrane 202 is fixedly installed inside the frame 201. A handle 204 is fixedly installed at one end of the connecting shaft 203, and a cylinder 205 is fixedly installed at the other end of the connecting shaft 203 away from the handle 204. Limiting holes are provided at equal intervals on the cylinder 205. The threaded seat 206 is fixedly installed on the outer wall of the filter box 11. A screw 207 that matches the limiting hole is threaded on the threaded seat 206. The nozzle 208 is fixedly installed at the bottom of the top cover 13. A water inlet pipe 209 is connected to the top end of the nozzle 208, and a nozzle 210 is fixedly installed at the bottom end of the nozzle 208.

[0027] During use, paint is added to the feeding hopper 14, and the paint falls onto the semi-permeable membrane 202 for ultrafiltration. The ultrafiltered paint is then discharged from the bottom of the filter box 11. After the ultrafiltration is completed, the screw 207 is rotated to disengage from the limiting hole, thereby releasing the limiting of the cylinder 205. Then, the handle 204 is rotated, and the handle 204 drives the frame 201 to rotate through the connecting shaft 203, causing the frame 201 to rotate. 01. Flip 180°, then move the screw 207 threadedly. The screw 207 extends into the limiting hole to reposition the cylinder 205, so that the frame 201 stops rotating. Connect the water inlet pipe 209 to the water pump and water tank. The water pump draws water into the spray pipe 208, and then sprays it out through the nozzle 210. The sprayed water washes the semi-permeable membrane 202, thereby washing away the impurities filtered by the semi-permeable membrane 202 and improving the service life of the semi-permeable membrane 202.

[0028] Example 2

[0029] Refer to attached figure Figure 1 and attached Figure 5 This is the second embodiment of the present invention, which differs from the first embodiment in that:

[0030] The pushing structure 3 includes a sealing box 31 and a support frame 32. The sealing box 31 and the support frame 32 are respectively fixedly installed on one side of the filter box 11. An electric push rod 33 is fixedly installed on the support frame 32. A push plate 34 is fixedly installed at the telescopic end of the electric push rod 33. The push plate 34 is inside the sealing box 31. A guide rod 35 is fixedly installed on one side of the push plate 34. The guide rod 35 passes through the sealing box 31 and extends to the outside of the sealing box 31. The guide rod 35 is slidably connected to the side wall of the sealing box 31.

[0031] During use, when the coating material enters the filter box 11 from the feeding hopper 14 and falls onto the semi-permeable membrane 202, it will accumulate on the semi-permeable membrane 202 due to its viscosity, making it difficult to flow. At this time, the electric push rod 33 is activated, and the push plate 34 is moved by the telescopic rod of the electric push rod 33. The push plate 34 moves on the semi-permeable membrane 202, thereby pushing the coating material to flow, so that the coating material is evenly distributed on the semi-permeable membrane 202, improving the ultrafiltration efficiency. After the push is finished, the electric push rod 33 is controlled to make the push plate 34 retract into the sealing box 31.

[0032] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An ultrafiltration device for use in coating processing, characterized in that: The filter includes a filter structure (1), a cleaning structure (2), and a pushing structure (3). The cleaning structure (2) and the pushing structure (3) are respectively installed on the filter structure (1). The cleaning structure (2) includes a frame (201), a semi-permeable membrane (202), a connecting shaft (203), a threaded seat (206), and a nozzle (208). The frame (201) is rotatably connected to the side wall of the filter box (11) through the connecting shaft (203). The semi-permeable membrane (202) is fixedly installed inside the frame (201). One end of the connecting shaft (203) is fixedly installed with a handle (204), and the other end is fixedly installed with a cylinder (205). Limiting holes are provided at equal intervals on the cylinder (205). A screw (207) is threaded on the threaded seat (206). The nozzle (208) is equipped with a water inlet pipe (209) and a nozzle (210).

2. The ultrafiltration device for use in paint processing according to claim 1, characterized in that: The filter structure (1) includes a filter box (11), a support column (12), a top cover (13), and a feeding hopper (14). The support column (12) is fixedly installed at the bottom of the filter box (11), the top cover (13) is detachably installed at the top of the filter box (11), and the feeding hopper (14) is installed at the top of the top cover (13).

3. The ultrafiltration device for use in paint processing according to claim 1, characterized in that: The connecting shafts (203) are fixedly installed at both ends of the frame (201), and the connecting shafts (203) extend through the side wall of the filter box (11) to the outside of the filter box (11).

4. The ultrafiltration device for use in paint processing according to claim 3, characterized in that: The threaded seat (206) is fixedly installed on the outer wall of the filter box (11), the screw (207) is adapted to the limiting hole, the spray pipe (208) is fixedly installed at the bottom of the top cover (13), the water inlet pipe (209) is connected to the top of the spray pipe (208), and the nozzle (210) is fixedly installed at the bottom of the spray pipe (208).

5. The ultrafiltration device for use in paint processing according to claim 1, characterized in that: The pushing structure (3) includes a sealing box (31) and a support frame (32), which are respectively fixedly installed on one side of the filter box (11).

6. The ultrafiltration device for use in paint processing according to claim 5, characterized in that: An electric push rod (33) is fixedly installed on the support frame (32). A push plate (34) is fixedly installed on the telescopic end of the electric push rod (33). A guide rod (35) is fixedly installed on one side of the push plate (34). The guide rod (35) passes through the sealing box (31) and extends to the outside of the sealing box (31). The guide rod (35) and the side wall of the sealing box (31) are slidably connected.

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