Coating filter for coating production

Abstract

The utility model discloses a coating filter for coating production, which relates to the technical field of coating production, and comprises a base, a filter box at the top of the base, a feed pipe and a discharge port respectively arranged at the top and the bottom of the filter box, a flow control valve mounted on the outer surface of the feed pipe, a sealing plate fixed inside the filter box, and a sealing plate fixed inside the sealing plate, according to the utility model, the continuous operation of the filtering operation can be realized, the traditional mode that the filter plate is disassembled and assembled by stopping the machine is thoroughly abandoned through the design, the trouble of disassembling and assembling the filter plate by workers is reduced, the operation efficiency of a production line is obviously improved, and the production cost is reduced. Clear water is pumped by the water pump through the water pumping pipe and then sprayed out through the water conveying pipe, the connecting pipe and the washing head, high-speed backwashing flow is formed to carry out directional washing on micropores of the filter plate, then impurities on the filter plate can be removed, the purpose of cleaning the filter plate is achieved, the whole cleaning process and filtering operation are executed in parallel, and the production process does not need to be interrupted.

Description

Technical Field

[0001] This utility model relates to the field of coating production technology, specifically a coating filter for coating production. Background Technology

[0002] Coatings have complex compositions, including pigments, fillers, solvents, and additives. During production, mechanical impurities (such as metal shavings from equipment wear and tear, and fibers from packaging materials), undispersed particles (pigment agglomerates, undissolved resin particles), or gel-like substances (localized solidified clumps formed by solvent evaporation) may be introduced. Filtration is a crucial process step, its core purpose being to remove impurities, optimize performance, and ensure production continuity.

[0003] However, when the filtration device is running, pigment and filler particles, gel impurities, or undispersed agglomerates in the coating will gradually deposit on the surface of the filter plate and in the microporous structure, forming a filter cake layer with a certain strength. At this time, the machine must be stopped and the filter plate assembly must be manually disassembled. After cleaning, the filter plate must be reinstalled and reset. This process not only has a long downtime and increases the cost of manual maintenance, but also directly causes a significant decrease in the efficiency of coating production, making it difficult to meet the high efficiency requirements of continuous industrial production. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a paint filter for paint production, so as to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a paint filter for paint production, comprising a base, a filter box at the top of the base, an inlet pipe and an outlet at the top and bottom of the filter box respectively, a flow control valve installed on the outer surface of the inlet pipe, a sealing plate fixed inside the filter box, the cross-sectional area of ​​the sealing plate being smaller than the cross-sectional area of ​​the inner cavity of the filter box, movable openings penetrating both sides of the filter box, a sliding frame slidably connected inside the movable opening, and a filter plate installed on the inner side of the sliding frame;

[0006] The top of the filter box is equipped with a flushing assembly, which includes a water pump, a water supply pipe, a connecting pipe, and a flushing head.

[0007] Limiting components are installed on the outer surface of the filter box.

[0008] Furthermore, the water pump is installed on the top of the filter box, and the water outlet end of the water pump is connected to two sets of water supply pipes through a three-way connector. One end of the water supply pipe is connected to a connecting pipe, and several sets of flushing heads are installed at the bottom of the connecting pipe. The water inlet end of the water pump is connected to a suction pipe. Solenoid valves are installed on the outer surface of both sets of water supply pipes. The connecting pipe is U-shaped, and the several sets of flushing heads are inclined towards the filter plate.

[0009] By adopting the above technical solution, during operation, the operator first closes a set of solenoid valves corresponding to the pipeline to be flushed. After starting the water pump, the clean water is drawn in through the suction pipe and diverted to a single set of water delivery pipes through a three-way valve. The water flow is then introduced into a "U"-shaped connecting pipe, which forms a directional high-speed water flow through several flushing heads evenly distributed at its bottom and tilted towards the filter plate, targeting and flushing the surface and micropores of the filter plate. The annular layout of the "U"-shaped connecting pipe and the tilt angle design of the flushing heads in this structure can achieve full-area, dead-angle-free flushing of the filter plate. By optimizing the impact angle between the water flow and the surface of the filter plate, the removal effect of residual impurities in the micropores is significantly enhanced, effectively improving the cleaning efficiency of the filter plate and the thoroughness of impurity removal.

[0010] Furthermore, the filter plate is provided with four pieces, with two pieces forming a group, for a total of two groups.

[0011] By adopting the above technical solution, the filter plates are designed with four plates divided into two groups (two plates per group), which can realize the alternating filtration of the two groups of filter plates. When one group of filter plates is clogged, there is no need to stop the machine. The other group of spare filter plates can be quickly moved into the filtration station through the switching mechanism to continue the operation. This not only ensures the continuity of the filtration process, but also provides parallel operation space for the online cleaning of clogged filter plates, which significantly improves the production efficiency and maintenance convenience of the equipment.

[0012] Furthermore, the limiting component includes a mounting plate installed above the outer surface of the filter box. A servo motor is mounted on the top of the mounting plate, and a lead screw is connected to the output end of the servo motor. A movable frame is threaded onto the outer surface of the lead screw. Limiting plates are fixed at both ends of the movable frame. Both the limiting plates and the movable frame are in contact with the filter box.

[0013] By adopting the above technical solution, the servo motor drives the lead screw to rotate, and the rotation of the lead screw drives the threaded movable frame and the limit plates at both ends to move downward synchronously, realizing the clamping and precise positioning of the translation frame in the filter box. This ensures that the limit plate is in close contact with the filter box after the filter plate is switched, effectively avoiding leakage problems caused by the displacement of the movable frame, and improving the sealing reliability of the device and the installation stability of the filter plate.

[0014] Furthermore, a control panel is installed on the upper surface of the filter box, and the water pump, solenoid valve and servo motor are all electrically connected to the control panel.

[0015] By adopting the above technical solution, staff can control the water pump, solenoid valve, and servo motor through the control panel.

[0016] Furthermore, positioning blocks are fixed on both sides of the translation frame.

[0017] By adopting the above technical solution, when the positioning block is in contact with the outer wall of the filter box during the process of manually pushing the translation frame to move laterally, it is determined that the filter plate has completed the station switching and is accurately positioned.

[0018] Furthermore, the bottom of the filter plate is in close contact with the top of the sealing plate, and a rubber layer is provided on the top of the sealing plate and the inner side of the movable opening.

[0019] By adopting the above technical solution, the close contact between the bottom of the filter plate and the top of the sealing plate, combined with the rubber layer on the top of the sealing plate and the inside of the movable opening, can form a flexible sealing structure, which can effectively prevent unfiltered coating from leaking from the edge of the filter plate, and avoid affecting the filtration quality or causing material waste due to leakage.

[0020] Furthermore, the base has grooves on both sides of its top, and a collection trough is placed inside the grooves.

[0021] By adopting the above technical solution, the grooves on both sides of the top of the base cooperate with the built-in collection tank to form an impurity collection unit. The grooves play a role in positioning and limiting the collection tank. The collection tank facilitates the collection of impurities such as filter cake scraped off during the filtration process and rinsing waste liquid. Moreover, the collection tank can be directly removed from the groove for cleaning. The structure is compact and reasonable, which not only realizes the centralized collection of pollutants, but also improves the convenience of device maintenance.

[0022] Furthermore, guide plates are fixed on both sides of the filter box, and the guide plates are inclined downwards towards the collection tank.

[0023] By adopting the above technical solution, the guide plates fixed on both sides of the filter box and inclined towards the collection tank can automatically guide the filter cake impurities and rinsing waste liquid scraped off during the filtration process into the collection tank along the surface of the guide plates by gravity, avoiding impurities from being stuck at the bottom of the filter box or scattered everywhere. This inclined guide design not only improves the pollutant collection efficiency, but also facilitates subsequent centralized cleaning.

[0024] In summary, the present invention has the following main advantages:

[0025] 1. This utility model features two sets of filter plates, a translation frame, and a sealing plate. During filtration, the coating material falls directly onto the sealing plate. At this time, the two filter plates at the top and bottom of the sealing plate filter the coating material. The filtered coating material flows down from between the sealing plate and the inner wall of the filter box. After a period of use, the operator can adjust the flow control valve to reduce the feed rate. Then, the operator can push the translation frame to move the other set of filter plates into the filter box for filtration. Due to the flow control valve, the filtration discharge speed is greater than the feed speed, preventing unfiltered coating material from being pushed out of the filter box when the movable frame is pushed. After the filter plates are switched, the normal feed flow rate can be restored, achieving continuous operation of the filtration process. This design completely eliminates the traditional method of stopping and disassembling filter plates, reduces the trouble for operators in disassembling and assembling filter plates, and significantly improves the operating efficiency of the production line.

[0026] 2. This utility model, by incorporating a rinsing component, can scrape off filter cake and other impurities from the sealing plate when the movable frame moves horizontally. The scraped filter cake and impurities fall into the collection tank. At this time, the operator closes a set of solenoid valves and then turns on the water pump. The water pump draws clean water through the water pipe and then sprays it out through the water delivery pipe, connecting pipe, and rinsing head, forming a high-speed backwash flow to directionally flush the micropores of the filter plate, thereby removing impurities from the filter plate and achieving the purpose of cleaning the filter plate. The entire cleaning process is performed in parallel with the filtration operation without interrupting the production process, realizing a highly efficient operation mode of "online cleaning - non-stop maintenance".

[0027] 3. This utility model has a limiting component. After the filter plate is switched, the operator starts the servo motor, which drives the lead screw to rotate. This causes the movable frame to move the limiting plate downward until the two sets of limiting plates clamp and limit the translation frame. This completely eliminates the risk of liquid flow short circuit and material leakage caused by installation deviation, and ensures the stability and consistency of the coating filtration process. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of this utility model;

[0029] Figure 2 This is a schematic diagram of the filter box structure of this utility model;

[0030] Figure 3 This is a schematic diagram of the cross-sectional structure of the filter box of this utility model;

[0031] Figure 4 This is a schematic diagram of the translation frame structure of this utility model;

[0032] Figure 5 This is a schematic diagram of the filter plate structure of this utility model.

[0033] Figure 6This is a schematic diagram of the flushing assembly structure of this utility model.

[0034] Figure 7 This is a schematic diagram of the limiting component structure of this utility model.

[0035] Figure 8 This is a top-section structural diagram of the filter box of this utility model.

[0036] In the diagram: 1. Base; 2. Filter box; 3. Flushing assembly; 301. Water pump; 302. Water supply pipe; 303. Connecting pipe; 304. Flushing head; 305. Solenoid valve; 306. Pumping pipe; 4. Limiting assembly; 401. Mounting plate; 402. Servo motor; 403. Lead screw; 404. Movable frame; 405. Limiting plate; 5. Translation frame; 6. Feed pipe; 7. Control panel; 8. Guide plate; 9. Groove; 10. Collection tank; 11. Filter plate; 12. Sealing plate; 13. Discharge port; 14. Positioning block; 15. Movable port; 16. Flow control valve. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0038] The embodiments of this utility model will be described below based on its overall structure.

[0039] Example 1: A paint filter for paint production, such as Figures 1-8As shown, to achieve the above objectives, this utility model provides the following technical solution: a paint filter for paint production, comprising a base 1, a filter box 2 at the top of the base 1, an inlet pipe 6 and an outlet 13 at the top and bottom of the filter box 2 respectively, a flow control valve 16 installed on the outer surface of the inlet pipe 6, a sealing plate 12 fixed inside the filter box 2, and the cross-sectional area of ​​the sealing plate 12 being smaller than the cross-sectional area of ​​the inner cavity of the filter box 2, movable openings 15 penetrating on both sides of the filter box 2, a sliding frame 5 slidably connected inside the movable openings 15, and positioning blocks 14 fixed on both sides of the sliding frame 5, allowing for manual pushing of the sliding frame... 5. During the lateral movement, when the positioning block 14 is in contact with the outer wall of the filter box 2, it is determined that the filter plate 11 has completed the station switching and is accurately positioned. The filter plate 11 is installed on the inner side of the translation frame 5. The two sides of the filter box 2 are fixed with guide plates 8. The guide plates 8 are inclined downwards towards the collection tank 10. The guide plates 8 fixed on both sides of the filter box 2 and inclined towards the collection tank 10 can automatically guide the filter cake impurities and rinsing waste liquid scraped off during the filtration process into the collection tank 10 along the surface of the guide plates 8 by gravity, so as to avoid impurities being stuck at the bottom of the filter box 2 or scattered everywhere. This inclined guide design not only improves the pollutant collection efficiency, but also facilitates subsequent centralized cleaning.

[0040] A flushing assembly 3 is installed on the top of the filter box 2. The flushing assembly 3 includes a water pump 301, a water supply pipe 302, a connecting pipe 303, and flushing heads 304. The water pump 301 is installed on the top of the filter box 2, and two sets of water supply pipes 302 are connected to the outlet end of the water pump 301 through a T-joint. One end of each water supply pipe 302 is connected to the connecting pipe 303. Several sets of flushing heads 304 are installed at the bottom of the connecting pipe 303. The water pump 301... A water inlet is connected to a pumping pipe 306, and solenoid valves 305 are installed on the outer surfaces of both sets of water delivery pipes 302. The connecting pipe 303 is U-shaped, and several sets of flushing heads 304 are inclined towards the filter plate 11. During operation, the operator first closes the set of solenoid valves 305 corresponding to the pipe to be flushed, and then starts the water pump 301. Clean water is drawn in through the pumping pipe 306 and diverted to the single set of water delivery pipes 302 through a three-way valve. The water flows through the water delivery pipes 302 into the U-shape. The U-shaped connecting pipe 303 forms a directional high-speed water flow through several flushing heads 304 evenly distributed at its bottom and tilted towards the filter plate 11, which targets and flushes the surface and micropores of the filter plate 11. The annular layout of the U-shaped connecting pipe 303 and the tilt angle of the flushing head 304 (the angle between the flushing head (304) and the surface of the filter plate (11) is 30°-60°, and the water pressure is 0.3-0.8MPa) are designed to achieve a thorough flushing of the entire area of ​​the filter plate 11 without dead angles. By optimizing the impact angle between the water flow and the surface of the filter plate 11, the peeling effect of residual impurities in the micropores is significantly enhanced, effectively improving the cleaning efficiency of the filter plate 11 and the thoroughness of impurity removal.

[0041] See Figures 1-5 In the above embodiment, the filter plate 11 is provided with four pieces, two pieces per group, and there are two groups in total. The filter plate 11 adopts a design of four pieces divided into two groups (two pieces per group), which can realize the dual groups of filter plates 11 for filtration. When one group of filter plates 11 is blocked, there is no need to stop the machine. The other group of spare filter plates 11 can be quickly moved into the filtration station to continue the operation through the switching mechanism. This not only ensures the continuity of the filtration process, but also provides parallel operation space for the online cleaning of blocked filter plates 11, which significantly improves the production efficiency and maintenance convenience of the device.

[0042] See Figures 1-2 In the above embodiment, a control panel 7 is installed above the outer surface of the filter box 2, and the water pump 301, solenoid valve 305 and servo motor 402 are all electrically connected to the control panel 7. The operator can control the water pump 301, solenoid valve 305 and servo motor 402 through the control panel 7.

[0043] See Figure 3 In the above embodiment, the bottom of the filter plate 11 is in close contact with the top of the sealing plate 12, and the top of the sealing plate 12 and the inner side of the movable opening 15 are provided with rubber layers (not shown in the figure). The close contact between the bottom of the filter plate 11 and the top of the sealing plate 12, combined with the rubber layers on the top of the sealing plate 12 and the inner side of the movable opening 15, can form a flexible sealing structure, which can effectively prevent unfiltered coating from leaking from the edge of the filter plate 11, and avoid affecting the filtration quality or causing material waste due to leakage.

[0044] See Figures 1-2 In the above embodiment, grooves 9 are provided on both sides of the top of the base 1, and a collection trough 10 is placed inside the grooves 9. The grooves 9 on both sides of the top of the base 1 cooperate with the built-in collection trough 10 to form an impurity collection unit. The grooves 9 play a positioning and limiting role for the collection trough 10. The collection trough 10 is convenient for collecting impurities such as filter cake scraped off during the filtration process and rinsing waste liquid. The collection trough 10 can be directly removed from the grooves 9 for cleaning. The structure is compact and reasonable, which not only realizes the centralized collection of pollutants, but also improves the convenience of device maintenance.

[0045] Example 2: To ensure that the translation frame does not shift during operation, Example 2 is an improvement upon Example 1. (See attached document for details.) Figure 1 , Figure 2 and Figure 7The limiting component 4 includes a mounting plate 401 installed above the outer surface of the filter box 2. A servo motor 402 is installed on the top of the mounting plate 401, and a lead screw 403 is connected to the output end of the servo motor 402. A movable frame 404 is threadedly connected to the outer surface of the lead screw 403. Limiting plates 405 are fixed at both ends of the movable frame 404. The limiting plates 405 and the movable frame 404 are in contact with the filter box 2. The servo motor 402 drives the lead screw 403 to rotate. The rotation of the lead screw 403 drives the threaded movable frame 404 and the limiting plates 405 at both ends to move downward synchronously, realizing the clamping and precise positioning of the translation frame 5 inside the filter box 2. This ensures that the limiting plate 405 is in close contact with the filter box 2 after the filter plate 11 is switched, effectively avoiding leakage caused by the displacement of the movable frame 404, and improving the sealing reliability of the device and the installation stability of the filter plate 11.

[0046] The implementation principle of this utility model is as follows: During the filtration operation, the worker delivers the coating material to be filtered to the surface of the sealing plate 12. The first set of filter plates 11, arranged front and back on the top of the sealing plate 12, filters the coating material. The filtered coating material flows downward through the gap between the sealing plate 12 and the inner wall of the filter box 2 to the subsequent process. After the set of filter plates 11 has been used for a period of time (to determine the amount of liquid output and whether the filter plates 11 are clogged), the worker reduces the feed rate by adjusting the flow control valve 16, utilizing the dynamic balance of the filtration discharge speed being greater than the feed speed. Then, the collection tank 10 is placed in the groove 9, and the translation frame 5 is manually pushed to move another set of spare filter plates 11 laterally into the filtration station in the filter box 2. During the process, the flow control valve 16 is set to prevent unfiltered paint from being pushed out of the filter box 2 when the operator pushes the translation frame 5. After the filter plate 11 is switched, the operator restores the normal feed flow of the feed pipe 6 to realize continuous operation of the filtration operation, thereby abandoning the traditional mode of stopping and disassembling the filter plate 11. During the process of pushing the translation frame 5 to move, the translation frame 5 can scrape off the filter cake and other impurities on the sealing plate 12 and make them fall into the collection tank 10. When the translation frame 5 is switched to the position, the set of solenoid valves 305 corresponding to the pipeline to be flushed is closed. After the water pump 301 is started, the clean water is sucked in through the water pumping pipe 306 and diverted to the single set of water supply pipes 302 through the three-way valve. The water flow is introduced into the "U"-shaped connecting pipe 303 through the water supply pipe 302. Through the several flushing heads 304 that are evenly distributed at the bottom and tilted towards the filter plate 11, a directional high-speed water flow is formed to target the surface and micropores of the filter plate 11. The impurities will be collected in the collection tank 10.

[0047] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A paint filter for paint production, comprising a base (1), characterized in that: The base (1) has a top filter box (2). The top and bottom of the filter box (2) are respectively provided with a feed pipe (6) and a discharge port (13). The outer surface of the feed pipe (6) is equipped with a flow control valve (16). The filter box (2) is fixed with a sealing plate (12). The cross-sectional area of ​​the sealing plate (12) is smaller than the cross-sectional area of ​​the inner cavity of the filter box (2). The filter box (2) has movable openings (15) on both sides. The movable openings (15) are slidably connected with a translation frame (5). The translation frame (5) is equipped with a filter plate (11) on its inner side. The top of the filter box (2) is equipped with a flushing assembly (3), which includes a water pump (301), a water supply pipe (302), a connecting pipe (303), and a flushing head (304). Limiting components (4) are installed on the outer surface of the filter box (2).

2. The paint filter for paint production according to claim 1, characterized in that: The water pump (301) is installed on the top of the filter box (2), and the outlet end of the water pump (301) is connected to two sets of water supply pipes (302) through a three-way connector. One end of the water supply pipe (302) is connected to a connecting pipe (303). Several sets of flushing heads (304) are installed at the bottom of the connecting pipe (303). The inlet end of the water pump (301) is connected to a water pumping pipe (306). Solenoid valves (305) are installed on the outer surface of both sets of water supply pipes (302). The connecting pipe (303) is U-shaped, and several sets of flushing heads (304) are inclined towards the filter plate (11).

3. The paint filter for paint production according to claim 1, characterized in that: The filter plate (11) has four pieces, with two pieces forming a group, for a total of two groups.

4. The paint filter for paint production according to claim 1, characterized in that: The limiting component (4) includes a mounting plate (401) installed on the outer surface of the filter box (2). A servo motor (402) is installed on the top of the mounting plate (401), and a lead screw (403) is connected to the output end of the servo motor (402). A movable frame (404) is threadedly connected to the outer surface of the lead screw (403). Limiting plates (405) are fixed at both ends of the movable frame (404). The limiting plates (405) and the movable frame (404) are in contact with the filter box (2).

5. The paint filter for paint production according to claim 4, characterized in that: The filter box (2) is equipped with a control panel (7) on its outer surface, and the water pump (301), solenoid valve (305) and servo motor (402) are all electrically connected to the control panel (7).

6. The paint filter for paint production according to claim 1, characterized in that: Positioning blocks (14) are fixed on both sides of the translation frame (5).

7. The paint filter for paint production according to claim 1, characterized in that: The bottom of the filter plate (11) is in close contact with the top of the sealing plate (12), and the top of the sealing plate (12) and the inner side of the movable opening (15) are both provided with a rubber layer.

8. The paint filter for paint production according to claim 1, characterized in that: The base (1) has grooves (9) on both sides of its top, and a collection trough (10) is placed inside the grooves (9).

9. The paint filter for paint production according to claim 1, characterized in that: Both sides of the filter box (2) are fixed with guide plates (8), which are inclined downwards toward the collection tank (10).

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