A varnish filtering device
By designing an upper and lower filter plate structure, and combining motor drive and water pump nozzle cleaning methods, the problem of time-consuming and labor-intensive manual cleaning of impurities on the filter plate surface is solved, realizing automatic cleaning and efficient filtration of the filter plate surface.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI KAIHONG SPECIAL MATERIAL TECH CO LTD
- Filing Date
- 2025-06-06
- Publication Date
- 2026-06-02
AI Technical Summary
Existing varnish filtration equipment requires manual operation to clean impurities from the filter plate surface, which is time-consuming, labor-intensive, and not easy to automate.
A varnish filtration device was designed, which adopts an upper filter plate and a lower filter plate structure. The filter plate is tilted and backwashed by a screw driven by a forward and reverse motor. Combined with a water pump and a spray nozzle, impurities are automatically cleaned, thus achieving automatic cleaning of the filter plate surface.
It enables automatic cleaning of impurities on the filter plate surface, improves filtration efficiency, reduces manual operation time and labor intensity, and enhances the varnish filtration effect.
Smart Images

Figure CN224307920U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of varnish filtration processing technology, specifically a varnish filtration device. Background Technology
[0002] Varnish is a transparent or slightly yellowish coating that does not contain pigments. It has a good gloss, forms a film quickly, and has a wide range of uses. It is mainly composed of resin and solvent, and sometimes a small amount of additives are added according to performance requirements. After drying, varnish forms a smooth film that can reveal the original texture of the object, while also preventing oxidation and corrosion, thus protecting the object.
[0003] During the varnish processing, impurities in the varnish need to be filtered out to prevent the varnish from making the surface of the object rough due to impurities. Filtering equipment is used for varnish filtration. Most existing varnish filtration equipment uses filter plates for filtration. However, after a period of use, the impurities on the surface of the filter plates need to be cleaned. The existing cleaning methods are mostly manual, which is not convenient for automatic cleaning. Moreover, the plates need to be reinstalled after cleaning, which is time-consuming and labor-intensive. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this utility model provides a varnish filtration device that solves the problem of inconvenience in automatically cleaning impurities from the filter plate surface during varnish filtration.
[0006] (II) Technical Solution
[0007] To achieve the aforementioned goal of automatically cleaning impurities from the filter plate surface during varnish filtration, this utility model provides the following technical solution: A varnish filtration device includes a filter housing, a feeding pipe fixed to the top of the filter housing, a discharge pipe fixed to the bottom side of the filter housing, two rectangular sleeves fixed to the outside of the filter housing, an upper water guide pipe and a lower water guide pipe fixed inside the upper and lower rectangular sleeves respectively, an upper spray head and a lower spray head fixed to the upper and lower sides of the inside of the filter housing respectively, a forward and reverse motor fixed to the side of the filter housing, a lead screw fixed to the output end of the forward and reverse motor, guide grooves opened on the front and rear inner walls of the filter housing, guide blocks sliding inside the guide grooves, and storage grooves opened on the left and right inner walls of the filter housing, with a filter structure installed inside the storage grooves;
[0008] The filter structure includes a semicircular block and a semicircular shaft. The semicircular shaft is rotatably connected between the two semicircular blocks by a pivot pin. An upper filter plate is fixed to one outer end of the semicircular block, and a lower filter plate is fixed to one outer end of the semicircular shaft. A horseshoe-shaped rotating shaft is rotatably connected to one outer end of both the upper and lower filter plates by a pivot pin. A vertical telescopic rod is fixed on the horseshoe-shaped rotating shaft. Double-stage electric telescopic rods are fixed to both the upper and lower sides of the filter housing.
[0009] Preferably, one inner end of the vertical telescopic rod is fixedly connected to the horseshoe-shaped rotating shaft, and the outer end is fixedly connected to the double-stage electric telescopic rod.
[0010] Preferably, a hoof-shaped rotating groove is provided at one outer end of both the upper and lower filter plates, and the hoof-shaped rotating shaft is rotatably connected to the hoof-shaped rotating groove through a rotating pin.
[0011] Preferably, the upper filter plate and the lower filter plate are fixedly connected to the semicircular block and the semicircular shaft, respectively, and the semicircular block and the semicircular shaft are rotatably connected by a pivot pin.
[0012] Preferably, the diameter of the filter holes on the surface of the upper filter plate is larger than the diameter of the filter holes on the surface of the lower filter plate.
[0013] Preferably, the guide block is slidably connected to the guide groove, the lead screw passes through the guide block and is threadedly connected to the guide block, and the semicircular block is rotatably connected to the guide block through a pivot pin.
[0014] Preferably, a water pump is provided on the back of the filter housing, and the water pump is connected to the upper water guide pipe and the lower water guide pipe respectively through water pipes.
[0015] Preferably, the upper nozzle and the lower nozzle are respectively installed on the left and right inner walls of the filter box, the upper nozzle is connected to the upper water guide pipe, and the lower nozzle is connected to the lower water guide pipe.
[0016] Compared with the prior art, the present invention provides a varnish filtration device, which has the following beneficial effects:
[0017] 1. This varnish filtration device pours varnish raw material into the filter box through the feeding pipe. The varnish raw material flows from the upper right to the lower left on the upper filter plate, thus performing preliminary filtration on the varnish raw material. After being filtered by the upper filter plate, the varnish raw material falls onto the lower filter plate and flows from the upper left to the lower right on the lower filter plate, thus performing multiple filtrations on the varnish raw material and improving the filtration effect. The filtered varnish raw material can be discharged through the discharge pipe.
[0018] 2. In this varnish filtration device, when it is necessary to clean the impurities filtered on the upper and lower filter plates, the upper and lower filter plates are tilted to the left. The impurities on the upper filter plate are located at the bottom, and the impurities on the lower filter plate are also located at the bottom. The upper filter plate can be backwashed and cleaned through the upper water pipe and the upper spray nozzle. The impurities at the bottom of the upper filter plate can fall to the bottom of the filter box through the gap between the upper filter plate and the right inner wall of the filter box. The lower filter plate can be backwashed and cleaned through the lower water pipe and the lower spray nozzle. The impurities at the bottom of the lower filter plate can fall to the bottom of the filter box through the gap between the lower filter plate and the left inner wall of the filter box. Finally, the impurities at the bottom of the filter box can be discharged through the discharge pipe. Therefore, it can automatically clean the filtered impurities. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of this utility model;
[0020] Figure 2 This is a diagram showing the combination of the upper and lower filter plates of this utility model.
[0021] Figure 3 This utility model Figure 2 Enlarged view of a portion of the structure at point A;
[0022] Figure 4 This is a schematic diagram of the upper and lower filter plates of the present invention tilted to the right;
[0023] Figure 5 This is a schematic diagram of the upper and lower filter plates of the present invention tilted to the left.
[0024] The components include: 1. Filter housing; 2. Feed pipe; 3. Discharge pipe; 4. Rectangular sleeve; 5. Upper water guide pipe; 6. Lower water guide pipe; 7. Upper nozzle; 8. Lower nozzle; 9. Forward and reverse motor; 10. Lead screw; 11. Guide groove; 12. Guide block; 13. Collection groove; 14. Semi-circular block; 15. Semi-circular shaft; 16. Upper filter plate; 17. Lower filter plate; 18. Horseshoe-shaped rotating shaft; 19. Vertical telescopic rod; 20. Double-stage electric telescopic rod. Detailed Implementation
[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0026] Please see Figure 1-5 This utility model provides a varnish filtration device, including a filter box 1. A feeding pipe 2 is fixed to the top of the filter box 1, and a discharge pipe 3 is fixed to the bottom side of the filter box 1. Two rectangular sleeves 4 are fixed to the outside of the filter box 1. An upper water guide pipe 5 and a lower water guide pipe 6 are fixed inside the upper and lower rectangular sleeves 4, respectively. An upper spray head 7 and a lower spray head 8 are fixed to the upper and lower sides of the filter box 1, respectively. A forward and reverse motor 9 is fixed to the side of the filter box 1. A lead screw 10 is fixed to the output end of the forward and reverse motor 9. Guide grooves 11 are opened on the front and rear inner walls of the filter box 1. Guide blocks 12 slide inside the guide grooves 11. Storage grooves 13 are opened on the left and right inner walls of the filter box 1. A filtration structure is set inside the storage grooves 13.
[0027] The filter structure includes a semi-circular block 14 and a semi-circular shaft 15. The semi-circular shaft 15 is rotatably connected between the two semi-circular blocks 14 via a pivot pin. An upper filter plate 16 is fixed to one outer end of the semi-circular block 14, and a lower filter plate 17 is fixed to one outer end of the semi-circular shaft 15. A hoof-shaped rotating shaft 18 is rotatably connected to one outer end of both the upper filter plate 16 and the lower filter plate 17 via a pivot pin. A vertical telescopic rod 19 is fixed to the hoof-shaped rotating shaft 18. Double-stage electric telescopic rods 20 are fixed to both the upper and lower sides of the filter housing 1. The varnish material can be poured into the filter housing 1 through the feeding pipe 2. At this time, the varnish material can fall onto the upper filter plate 16. Therefore, the varnish material can be initially filtered by the upper filter plate 16. The varnish material filtered by the upper filter plate 16 can fall onto the lower filter plate 17, and the varnish material can be filtered again by the lower filter plate 17.
[0028] Furthermore, the inner end of the vertical telescopic rod 19 is fixedly connected to the horseshoe-shaped rotating shaft 18, and the outer end is fixedly connected to the double-stage electric telescopic rod 20. During the rotation of the upper filter plate 16 and the lower filter plate 17, the outer ends of the upper filter plate 16 and the lower filter plate 17 can drive the vertical telescopic rod 19 to extend or retract through the horseshoe-shaped rotating shaft 18. At the same time, the double-stage electric telescopic rod 20 also extends or retracts, so that the outer ends of the upper filter plate 16 and the lower filter plate 17 can be moved through the vertical telescopic rod 19.
[0029] Furthermore, a hoof-shaped rotating groove is provided at one end of the outer side of both the upper filter plate 16 and the lower filter plate 17, and the hoof-shaped rotating shaft 18 is rotatably connected to the hoof-shaped rotating groove through a rotating pin. During the rotation of the upper filter plate 16 and the lower filter plate 17, the hoof-shaped rotating shaft 18 also rotates inside the hoof-shaped rotating groove. At this time, the hoof-shaped rotating shaft 18 can drive the vertical telescopic rod 19 to extend or retract, and the double-stage electric telescopic rod 20 can drive the vertical telescopic rod 19 to move laterally.
[0030] Furthermore, the upper filter plate 16 and the lower filter plate 17 are fixedly connected to the semicircular block 14 and the semicircular shaft 15, respectively. The semicircular block 14 and the semicircular shaft 15 are rotatably connected by a pivot pin, so that the upper filter plate 16 and the lower filter plate 17 can be rotatably connected to each other through the semicircular block 14 and the semicircular shaft 15.
[0031] Furthermore, the diameter of the filter holes on the surface of the upper filter plate 16 is larger than the diameter of the filter holes on the surface of the lower filter plate 17, which facilitates the initial filtration of the varnish raw material through the upper filter plate 16 and the secondary filtration of the varnish raw material through the lower filter plate 17.
[0032] Furthermore, the guide block 12 is slidably connected to the guide groove 11, the lead screw 10 passes through the guide block 12 and is threadedly connected to the guide block 12, the semicircular block 14 is rotatably connected to the guide block 12 through the pivot pin, the guide groove 11 can guide the guide block 12 laterally, the lead screw 10 can drive the guide block 12 to move, and the guide block 12 can drive the upper filter plate 16 and the lower filter plate 17 to rotate relative to each other through the semicircular block 14 and the semicircular shaft 15.
[0033] Furthermore, a water pump is installed on the back of the filter housing 1, and the water pump is connected to the upper water guide pipe 5 and the lower water guide pipe 6 through water pipes, so that clean water can be delivered into the upper water guide pipe 5 and the lower water guide pipe 6 respectively through the water pump installed on the back of the filter housing 1.
[0034] Furthermore, the upper nozzle 7 and the lower nozzle 8 are respectively installed on the left and right inner walls of the filter housing 1. The upper nozzle 7 is connected to the upper water guide pipe 5, and the lower nozzle 8 is connected to the lower water guide pipe 6, so that the clean water inside the upper water guide pipe 5 can be sprayed out through the upper nozzle 7. Therefore, the upper filter plate 16 can be backwashed and cleaned through the upper nozzle 7, and the clean water inside the lower water guide pipe 6 can be sprayed out through the lower nozzle 8. Therefore, the lower filter plate 17 can be backwashed and cleaned through the lower nozzle 8.
[0035] During use, the varnish material can be poured into the filter housing 1 through the feed pipe 2, as per the instruction manual. Figure 1 As shown, the varnish material flows from the upper right to the lower left on the upper filter plate 16. During this inclined flow, the varnish material undergoes initial filtration by the upper filter plate 16. After filtration, the varnish material falls onto the lower filter plate 17, where it flows from the upper left to the lower right. This further filtration by the lower filter plate 17 allows for multiple filtrations, improving the overall filtration effect. The filtered varnish material is then discharged through the discharge pipe 3. Furthermore, after filtration, if it is necessary to clean the impurities from the upper and lower filter plates 16 and 17, as per the attached instruction manual... Figure 4 As shown, at this time, impurities remain above the upper filter plate 16 and the lower filter plate 17. Then, the forward and reverse motor 9 is started to drive the lead screw 10 to rotate. The lead screw 10 can drive the guide block 12 to move from left to right inside the guide groove 11. The guide block 12 can also drive the inner end of the upper filter plate 16 and the lower filter plate 17 to move from left to right through the semi-circular block 14 and the semi-circular shaft 15. During this process, the outer end of the upper filter plate 16 and the lower filter plate 17 unfolds outward. At this time, the vertical telescopic rod 19 retracts, and the double-stage electric telescopic rod 20 can drive the vertical telescopic rod 19 to move from right to left, as shown in the attached instruction manual. Figure 5As shown, when the upper filter plate 16 and the lower filter plate 17 are tilted to the left, and before the semicircular block 14 and the semicircular shaft 15 have moved to the right-side receiving groove 13, so that there is still a certain gap between the inner end of the upper filter plate 16 and the lower filter plate 17 and the right inner wall of the filter housing 1, the impurities on the upper filter plate 16 are located at their bottom, and the impurities on the lower filter plate 17 are also located at their bottom. Activating the water pump located at the back of the filter housing 1 allows clean water to be delivered to the upper water pipe 5 and the lower water pipe 6 respectively. The clean water inside the upper water pipe 5 can be sprayed out through the upper nozzle 7, thus backwashing the upper filter plate 16 through the upper nozzle 7. The impurities at the bottom of the upper filter plate 16 can fall to the bottom of the filter housing 1 through the gap between it and the inner wall of the right side. Similarly, the clean water inside the lower water pipe 6 can be sprayed out through the lower nozzle 8. Therefore, the lower filter plate 17 can be backwashed and cleaned through the lower nozzle 8. The impurities at the bottom of the lower filter plate 17 can fall to the bottom of the filter housing 1 through the gap between it and the inner wall of the left side. Finally, the impurities at the bottom of the filter housing 1 can be discharged through the discharge pipe 3. Therefore, the filtered impurities can be automatically cleaned. And when the inner end of the upper filter plate 16 and the lower filter plate 17 moves into the storage tank 13 on the right side, as shown in the instruction manual... Figure 5 As shown, the varnish raw materials can be directly filtered and processed for further use.
[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A varnish filtering device comprising a filtering cabinet (1), characterized in that: The top of the filter box (1) is fixed with a feeding pipe (2), the bottom of the side of the filter box (1) is fixed with a discharge pipe (3), the outside of the filter box (1) is fixed with two rectangular sleeves (4), the inside of the upper and lower rectangular sleeves (4) are respectively fixed with an upper water guide pipe (5) and a lower water guide pipe (6), the inside of the filter box (1) is respectively fixed with an upper nozzle (7) and a lower nozzle (8), the side of the filter box (1) is fixed with a forward and reverse motor (9), the output end of the forward and reverse motor (9) is fixed with a lead screw (10), the front and rear inner walls of the filter box (1) are provided with guide grooves (11), the inside of the guide grooves (11) is slidably provided with guide blocks (12), the left and right inner walls of the filter box (1) are provided with storage grooves (13), and the inside of the storage grooves (13) is provided with a filter structure; The filter structure includes a semicircular block (14) and a semicircular shaft (15). The semicircular shaft (15) is rotatably connected between the two semicircular blocks (14) by a pivot pin. An upper filter plate (16) is fixed to one outer end of the semicircular block (14), and a lower filter plate (17) is fixed to one outer end of the semicircular shaft (15). A hoof-shaped pivot (18) is rotatably connected to one outer end of both the upper filter plate (16) and the lower filter plate (17) by a pivot pin. A vertical telescopic rod (19) is fixed on the hoof-shaped pivot (18). Double-stage electric telescopic rods (20) are fixed on both the upper and lower sides of the filter housing (1).
2. A varnish filtration device according to claim 1, characterised in that: The inner end of the vertical telescopic rod (19) is fixedly connected to the horseshoe-shaped rotating shaft (18), and the outer end is fixedly connected to the double-stage electric telescopic rod (20).
3. A varnish filtration device according to claim 1, wherein: The upper filter plate (16) and the lower filter plate (17) are both provided with a hoof-shaped rotating groove at one end of their outer side, and the hoof-shaped rotating shaft (18) is rotatably connected to the hoof-shaped rotating groove through a rotating pin.
4. The varnish filtration device according to claim 1, characterized in that: The upper filter plate (16) and the lower filter plate (17) are fixedly connected to the semicircular block (14) and the semicircular shaft (15) respectively, and the semicircular block (14) and the semicircular shaft (15) are rotatably connected by a pivot pin.
5. The varnish filtration device according to claim 1, characterized in that: The diameter of the filter holes on the surface of the upper filter plate (16) is larger than the diameter of the filter holes on the surface of the lower filter plate (17).
6. The varnish filtration device according to claim 1, characterized in that: The guide block (12) is slidably connected to the guide groove (11), the lead screw (10) passes through the guide block (12) and is threadedly connected to the guide block (12), and the semicircular block (14) is rotatably connected to the guide block (12) through a pivot pin.
7. The varnish filtration device according to claim 1, characterized in that: A water pump is provided on the back of the filter housing (1), and the water pump is connected to the upper water guide pipe (5) and the lower water guide pipe (6) respectively through water pipes.
8. A varnish filtration device according to claim 1, characterized in that: The upper nozzle (7) and the lower nozzle (8) are respectively installed on the left and right inner walls of the filter box (1). The upper nozzle (7) is connected to the upper water guide pipe (5), and the lower nozzle (8) is connected to the lower water guide pipe (6).