Waterproof coating filtering device capable of quickly replacing filter screen

Abstract

The utility model discloses a waterproof coating filtering device capable of quickly replacing a filter screen, and relates to the technical field of waterproof coatings. The device comprises a box body, wherein a cleaning and filtering assembly and a collecting assembly are arranged in the box body; the cleaning and filtering assembly comprises a push-and-pull frame and two clamping blocks, a trapezoidal block is arranged on one side of the push-and-pull frame, fixing cylinders are arranged on the two sides of the push-and-pull frame, the trapezoidal block transversely penetrates out of the box body, the push-and-pull frame and the fixing cylinders are arranged in the box body in a sliding fit mode, inserting pieces corresponding to the trapezoidal block are arranged on the back face of the box body, an impurity collecting groove is vertically formed in the push-and-pull frame, and a replacement groove is formed in one side of the push-and-pull frame. According to the utility model, the trapezoidal block is matched with the plug connector, so that the whole push-pull frame is convenient to pull, position and fix, the probability of accidental slippage of the push-pull frame in the filtering process is reduced, the convenience of detaching and cleaning filter residues of the push-pull frame is improved, and the locking state of the filter plate is quickly released by pressing the square rod through the matching of the channel, the clamping groove and the clamping block.

Description

Technical Field

[0001] This utility model belongs to the field of waterproof coatings, specifically, it relates to a waterproof coating filtration device with a quick-replaceable filter screen. Background Technology

[0002] A quick-change filter for waterproof coatings is a device used to filter impurities in waterproof coatings. Its core design goal is to simplify the filter replacement process and improve construction or production efficiency.

[0003] Chinese Patent No. CN220237881U discloses a filtration device for waterproof coating production, comprising: a machine body, a feeding pipe extending through the center of the top of the machine body, a discharge rack connected to the bottom of the feeding pipe, a filter plate disposed above the inner cavity of the machine body, a support seat disposed on both sides of the bottom of the filter plate, the outer side of the support seat being fixedly installed to the inner wall of the machine body, a motor disposed on the left side of the machine body, a threaded rod fixedly installed on the output shaft of the motor, the right end of the threaded rod extending through the interior of the machine body and fitted with a threaded sleeve, and scrapers fixedly installed on both sides of the bottom of the threaded sleeve.

[0004] The filtration device for producing waterproof coatings disclosed in the application has a filter plate that is fixed to the upper part of the machine body cavity by the support seats on both sides, making it difficult to disassemble and replace. If the filter plate is damaged, it will easily affect the filtration effect on the waterproof coating, and it is difficult to replace the filter plate with a different filtration precision according to the needs. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a waterproof coating filtration device with a quick-replaceable filter screen, thus solving the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] A waterproof coating filtration device with a quick-replaceable filter screen includes: a housing, in which a cleaning filter component and a collection component are disposed, with the cleaning filter component located above the collection component;

[0008] The cleaning filter assembly includes a push-pull frame and two locking blocks. The push-pull frame is located above the collection assembly. A trapezoidal block is located on one side of the push-pull frame, and fixed cylinders are installed on both sides. The trapezoidal block is located between the two fixed cylinders and extends horizontally to the outside of the housing. The push-pull frame and fixed cylinders are slidably fitted inside the housing. A corresponding connector is provided on the back of the housing. The push-pull frame has a vertical debris collection groove and a replacement groove on one side. The debris collection groove passes through the replacement groove and the push-pull frame. A filter plate and a corresponding scraper are slidably fitted inside the debris collection groove. The scraper is slidably fitted on the upper side of the filter plate. One side of the filter plate has... It has a first handle and two sliding plates on both sides. The first handle is located on one side of the box and the push-pull frame. The sliding plate slides in the replacement slot. There is a channel on the upper side of the sliding plate, which runs through the side of the sliding plate near the trapezoidal block. There are slots on the opposite outer sides of the two channels, which run through the upper side of the sliding plate. The slots are engaged in the corresponding slots. There is a square rod on the upper side of the slot. There are sliding grooves on both sides of the push-pull frame. The fixing cylinder is located around the corresponding sliding groove. The sliding groove is connected to the replacement slot. One end of the square rod slides in the corresponding sliding groove, and the middle part of the square rod slides elastically in the fixing cylinder. The fixing cylinder is located around the square rod.

[0009] Optionally, a feeding hopper is provided on the upper side of the box, four support columns are installed on the lower side of the box, support seats are provided on the lower end face of the support columns, and a gathering strip is installed on the periphery of the inner wall of the box, with the gathering strip located on the upper side of the push-pull frame.

[0010] Optionally, the front of the housing is provided with a pull-out groove, and both sides are provided with rectangular grooves. The pull-out groove is located between two rectangular grooves. The rectangular grooves penetrate the front of the housing and are connected to the pull-out groove. The pull-out groove horizontally penetrates the inner cavity of the housing. The push-pull frame is slidably fitted in the pull-out groove, and the fixed cylinder is slidably fitted in the corresponding rectangular groove. Multiple first springs are installed on one side of the replacement groove. One end of the multiple first springs is equipped with a squeezing plate. The squeezing plate is slidably fitted in the replacement groove and is located on one side of the filter plate.

[0011] Optionally, a motor is embedded in one side of the collection tank, and a screw is fixedly connected to the output shaft of the motor. The screw is located above the filter plate. A slot one is provided on the side of the collection tank away from the motor. One end of the screw is rotatably fitted in slot one. The scraper is threadedly fitted on the periphery of the screw. Two guide rods are installed between the two sides of the collection tank. The screw is located between the two guide rods. The scraper has a slot two corresponding to the guide rods in the transverse direction. Slot two passes through the scraper, and the guide rod passes through slot two.

[0012] Optionally, the connector includes a square box installed on the back of the enclosure, with one end of the trapezoidal block away from the sliding frame located inside the square box. A slot is provided on the upper side of the trapezoidal block, and a rod is elastically slidable inside the square box. The upper end of the rod extends through to the outside of the square box, and the lower end of the rod is engaged in the slot. A square groove is provided on the back of the enclosure, which is connected to the pull-out groove and the square box. The trapezoidal block passes through the square groove.

[0013] Optionally, a partition is provided between the two sides of the inner wall of the square box. The partition is located on the upper side of the trapezoidal block. The partition has a vertical through hole that passes through the partition. The insertion rod passes through the through hole. A limiting ring is provided around the insertion rod. A second spring is installed between the limiting ring and the upper side of the inner wall of the square box. The second spring is sleeved around the insertion rod. The upper side of the square box has a box opening that is connected to the inner cavity of the square box. The insertion rod passes through the box opening. A lifting block is installed on the upper end face of the insertion rod. The lifting block is located above the square box.

[0014] Optionally, a ring is provided around the square rod, and a third spring is installed between the ring and one side of the box. The third spring is sleeved around the square rod. A hole is provided on one end face of the fixing cylinder, and the hole is connected to the inner cavity of the fixing cylinder. The square rod passes through the hole, and a pressing plate is provided on one side of the square rod. The pressing plate is located on one side of the box.

[0015] Optionally, the collection component includes a collection box located on the lower side of the inner wall of the box. The collection box slides within the box. A second handle is provided on one side of the collection box. An opening is provided on the front of the box, located below the pull-out groove. The opening is connected to the inner cavity of the box, and the collection box passes through the opening.

[0016] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time:

[0017] The trapezoidal blocks and connectors work together to facilitate the overall pulling, positioning, and fixing of the push-pull frame, reducing the probability of accidental slippage during filtration and improving the convenience of disassembling and cleaning the filter residue. The channels, slots, and blocks work together to allow for quick release of the filter plate's locking state by pressing the square rod, improving the efficiency of filter plate replacement. At the same time, the blocks are used to fix the filter plate, reducing the probability of accidental loosening of the filter plate under the impact of high-viscosity waterproof coating.

[0018] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0019] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0020] In the picture:

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the box.

[0022] Figure 2 This is a schematic diagram of the cross-sectional structure of the box;

[0023] Figure 3 This is a schematic diagram of the cross-sectional structure of the push-pull frame;

[0024] Figure 4 This is a schematic diagram of the cross-sectional structure of the connector;

[0025] Figure 5 This is a schematic diagram of the cross-sectional structure of a square rod.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] Box body 1, feed hopper 2, support column 3, collection box 4, second handle 5, push-pull frame 6, filter plate 7, first handle 8, collecting bar 9, motor 10, screw 11, guide rod 12, scraper 13, slide plate 14, fixed cylinder 15, third spring 16, square rod 17, locking block 18, ring 19, first spring 20, extrusion plate 21, square box 22, partition 23, trapezoidal block 24, lifting block 25, insertion rod 26, second spring 27, pressing plate 28.

[0028] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] In the field of waterproof coating production and construction, filtration devices are crucial equipment for ensuring coating purity and construction quality. Based on different working principles and structural designs, existing filtration devices are mainly divided into four categories: gravity settling type, centrifugal separation type, mechanical filtration type, and vibrating screen type. Gravity settling devices rely on the density difference between the coating and impurities to achieve separation. Their core structure is a multi-layered inclined plate settling tank; after the coating enters from the top, impurities naturally settle to the bottom collection chamber. This type of equipment has a simple structure and low maintenance costs, but its processing efficiency is significantly affected by the viscosity of the coating. A single filtration cycle typically exceeds 2 hours, and it is difficult to separate particles with a diameter less than 50 micrometers. It is mostly used in the pretreatment stage.

[0032] Centrifugal separation devices accelerate impurity separation through centrifugal force generated by high-speed rotation. A typical structure includes a rotating drum, a screw conveyor, and a drive motor. The drum speed can reach 3000-5000 r / min. Under centrifugal force, the coating forms annular stratification, and impurities are thrown to the inner wall of the drum and discharged by the screw conveyor. This type of equipment has high efficiency in processing high-viscosity coatings (such as asphalt-based waterproof coatings), but the precision machining requirements of the drum and screw blades increase manufacturing costs. Furthermore, maintenance requires specialized tools to disassemble the rotor assembly, and the downtime for replacing the wear-resistant lining directly affects production continuity. Some equipment adds a metal filter screen to the feed pipe to intercept large particles, but fixed filters require periodic shutdowns for manual cleaning, resulting in high overall costs in practical applications.

[0033] Mechanical filtration devices are currently the most widely used type. Their basic structure includes a housing, replaceable filters, and a debris collection system. The housing has an inlet at the top; after the coating passes through the filter, impurities are intercepted, and clean coating flows out from the bottom outlet. In traditional designs, the filter is fixed inside the housing by flange bolts. Replacement requires removing multiple sets of bolts and lifting the filter module, an operation that takes approximately 15-30 minutes. Frequent disassembly and reassembly can also damage the flange sealing surface. Some improved designs use a side-opening inspection door, but manual alignment of the guide groove is required when reinstalling the filter. Positioning errors can easily lead to seal failure, causing 5%-10% of the coating to leak through gaps during filtration. Furthermore, the problem of debris accumulation on the filter surface is significant, usually requiring a high-pressure water gun or compressed air backwashing system, further increasing the equipment complexity.

[0034] Vibrating screen separators separate impurities by using a motor to drive the screen to vibrate at high frequency. The screen mesh size can be selected according to the coating properties (80-200 mesh). Its advantage lies in its ability to continuously process high-solids-content coatings, but the noise generated by the vibration and mechanical fatigue issues limit its application in precision production environments. Some models employ a rubber spring damping design, which can reduce noise to below 75 decibels, but screen replacement still requires disassembling the connection between the vibrating motor and the frame, thus not substantially improving operational convenience.

[0035] In terms of sealing technology, traditional devices generally use flange-gasket or O-ring compression seals. Flange connections require uniform bolt preload to ensure end-face sealing, but long-term gasket compression deformation leads to decreased sealing performance, necessitating periodic gasket replacement (approximately every 3-6 months). While O-ring seals are easy to install, prolonged contact with solvent-based coatings can cause swelling and aging, and micro-leakage may occur under pressure fluctuations. New sealing solutions such as magnetic seals or hydraulic expansion seals are still in the experimental stage and have not yet been widely adopted.

[0036] In terms of material selection, early filter devices were mostly made of carbon steel, but the acidic components in waterproof coatings (such as certain polymer modifiers) could easily cause corrosion of the housing. Modern equipment gradually adopts 304 / 316 stainless steel or polypropylene (PP) materials, and wear-resistant coatings (such as tungsten carbide) are added to key friction parts (such as filter guide rails), which can extend the service life by 2-3 times. The filter support frame is mostly made of laser-cut stainless steel plates welded together, taking into account both structural strength and lightweight requirements.

[0037] Intelligent upgrades have become a development trend in recent years. Some high-end equipment integrates pressure sensors and flow meters to monitor the degree of filter clogging in real time and automatically triggers backwashing procedures via PLC control. For example, when the pressure difference between the inlet and outlet exceeds 0.2 MPa, the system automatically starts compressed air backwashing (pressure 0.4-0.6 MPa) to remove accumulated impurities from the filter surface. However, these intelligent modules are mostly configured in large, stationary equipment, while portable filtration devices, limited by space and cost, still rely on manual observation to judge the filter condition.

[0038] In summary, while pursuing high-efficiency separation, existing filtration devices generally face problems such as cumbersome filter replacement, insufficient sealing reliability, and high maintenance costs. Especially in scenarios requiring frequent filter replacement (such as switching coating types or processing high-impurity raw materials), the manual operation mode of traditional structures severely restricts production efficiency. Although some devices simplify filter assembly and disassembly through modular design, the lack of reliable quick-locking mechanisms and self-cleaning functions still necessitates significant manual intervention in practical applications. These technical bottlenecks provide a clear direction for the development of new filtration devices.

[0039] Please see Figure 1-5 As shown, this embodiment provides a waterproof coating filter device with a quick-replaceable filter screen, including: a housing 1, in which a cleaning filter component and a collection component are provided, with the cleaning filter component located above the collection component;

[0040] The cleaning filter assembly includes a push-pull frame 6 and two locking blocks 18. The push-pull frame 6 is located above the collection assembly. A trapezoidal block 24 is located on one side of the push-pull frame 6, and fixed cylinders 15 are installed on both sides. The trapezoidal block 24 is located between the two fixed cylinders 15 and extends horizontally to the outside of the housing 1. The push-pull frame 6 and the fixed cylinders 15 are slidably fitted inside the housing 1. A corresponding connector for the trapezoidal block 24 is provided on the back of the housing 1. The push-pull frame 6 has a vertically arranged impurity collection groove and a replacement groove on one side. The impurity collection groove passes through the replacement groove and the push-pull frame 6. A filter plate 7 and a scraper 13 corresponding to the filter plate 7 are slidably fitted inside the impurity collection groove. The scraper 13 is slidably fitted on the upper side of the filter plate 7. A locking block 18 is located on one side of the filter plate 7. The first handle 8 and two sides are equipped with slide plates 14. The first handle 8 is located on one side of the housing 1 and the push-pull frame 6. The slide plate 14 is slidably engaged in the replacement groove. The upper side of the slide plate 14 is provided with a channel that passes through the side of the slide plate 14 near the trapezoidal block 24. The outer sides of the two channels are provided with slots that pass through the upper side of the slide plate 14. The slots are engaged in the corresponding slots. The upper side of the slot is provided with a square rod 17. The two sides of the push-pull frame 6 are provided with sliding grooves. The fixing cylinder 15 is located around the corresponding sliding groove. The sliding groove is connected to the replacement groove. One end of the square rod 17 is slidably engaged in the corresponding sliding groove. The middle part of the square rod 17 is elastically slidable in the fixing cylinder 15. The fixing cylinder 15 is located around the square rod 17.

[0041] One application of this embodiment is as follows: When it is necessary to clean the filter residue inside the push-pull frame 6, first release the locking of the connector to the trapezoidal block 24, then grasp the first handle 8 and pull the push-pull frame 6, filter plate 7, and fixing cylinder 15 together from the front of the housing 1. After the push-pull frame 6 is fully pulled out, the filter residue on the filter plate 7 can be cleaned. When it is necessary to replace the filter plate 7, press the two square rods 17 together, and the square rods 17 slide along the slide groove into the push-pull frame 6, causing the locking block 18 to disengage from the slot and slide into the channel. Then, grasp the first handle 8 again and pull the filter plate 7 out from the side of the push-pull frame 6. At this time, the locking block 18 disengages from the channel. After releasing the square rods 17, the locking block 18 can be reset by the elastic force. Similarly, referring to the above operation, the push-pull frame 6 and the replaced filter plate 7 can be quickly reset. It should be noted that all electrical equipment involved in this application can be powered by a battery or an external power source.

[0042] The trapezoidal block 24 and the plug-in piece work together to facilitate the overall pulling, positioning and fixing of the push-pull frame 6, reducing the probability of the push-pull frame 6 accidentally slipping off during the filtration process and improving the convenience of disassembling and cleaning the filter residue. The groove, slot and locking block 18 work together to facilitate pressing the square rod 17 to quickly release the locking state of the filter plate 7, improving the efficiency of replacing the filter plate 7. At the same time, the locking block 18 is used to fix the locking block 18, reducing the probability of the filter plate 7 accidentally loosening under the impact of high viscosity waterproof coating.

[0043] like Figure 1, 2 As shown, in this embodiment, the upper side of the box 1 is provided with a feeding hopper 2, and the lower side of the box is provided with four support columns 3. The lower end face of the support column 3 is provided with a support seat. The inner wall of the box 1 is provided with a collecting strip 9. The collecting strip 9 is located on the upper side of the push-pull frame 6. The feeding hopper 2 facilitates the injection of waterproof coating into the box 1. The support columns 3 reduce the probability of the box 1 rusting and being damaged when in contact with the damp ground. The support seat increases the contact area between the support column 3 and the ground, improving the stability of the device. The collecting strip 9 guides the waterproof coating to flow into the collection trough.

[0044] like Figure 1 As shown, the front of the housing 1 in this embodiment is provided with a pull-out groove and both sides are provided with rectangular grooves. The pull-out groove is located between the two rectangular grooves and penetrates the front of the housing 1. The rectangular groove is connected to the pull-out groove and the pull-out groove is horizontally penetrated through the inner cavity of the housing 1. The push-pull frame 6 is slidably engaged in the pull-out groove, and the fixed cylinder 15 is slidably engaged in the corresponding rectangular groove. A plurality of first springs 20 are installed on one side of the replacement groove. A pressing plate 21 is installed at one end of the plurality of first springs 20. The pressing plate 21 is slidably engaged in the replacement groove and is located on one side of the filter plate 7. The pull-out groove improves the stability of the push-pull frame 6 when sliding, and the rectangular groove reduces the probability of the housing 1 obstructing the sliding of the fixed cylinder 15. When the locking block 18 removes the limit on the sliding plate 14, the first springs 20 and the pressing plate 21 facilitate pushing the filter plate 7 out of the push-pull frame 6.

[0045] like Figure 2 , 3 As shown, in this embodiment, a motor 10 is embedded in one side of the collection tank. The output shaft of the motor 10 is fixedly connected to a screw 11, which is located above the filter plate 7. A slot is provided on the side of the collection tank away from the motor 10. One end of the screw 11 is rotatably fitted into the slot. The scraper 13 is threadedly fitted around the screw 11. Two guide rods 12 are installed between the two sides of the collection tank. The screw 11 is located between the two guide rods 12. The scraper 13 is laterally provided with a slot corresponding to the guide rods 12. The slot 12 passes through the scraper 13. The guide rods 12 pass through the slot 12. The motor 10 drives the screw 11 to rotate. The rotation of the screw 11 drives the scraper 13 to move horizontally, which facilitates the scraper 13 to spread the waterproof coating on the top of the filter plate 7, thereby improving the efficiency of the device in filtering the waterproof coating. The guide rods 12 improve the stability of the scraper 13 when it slides.

[0046] like Figure 4As shown, the connector in this embodiment includes a square box 22 installed on the back of the housing 1. The end of the trapezoidal block 24 away from the push-pull frame 6 is located inside the square box 22. A slot is provided on the upper side of the trapezoidal block 24. A plug rod 26 is elastically slidable inside the square box 22. The upper end of the plug rod 26 extends to the outside of the square box 22, and the lower end of the plug rod 26 is engaged in the slot. A square groove is provided on the back of the housing 1. The square groove is connected to the pull-out groove and the square box 22. The trapezoidal block 24 passes through the square groove. When the push-pull frame 6 is pushed into the housing 1, the inclined surface of the trapezoidal block 24 gradually pushes the plug rod 26 to move it elastically upward. When the plug rod 26 is vertically aligned with the slot, the plug rod 26 automatically inserts vertically into the slot under the elastic action. The plug rod 26 and the slot cooperate to facilitate the quick locking and unlocking of the push-pull frame 6. The square groove reduces the probability of the housing 1 obstructing the sliding of the trapezoidal block 24.

[0047] like Figure 4 As shown, in this embodiment, a partition 23 is provided between the two sides of the inner wall of the square box 22. The partition 23 is located above the trapezoidal block 24. The partition 23 has a vertical through hole that passes through the partition 23. The insertion rod 26 passes through the through hole. A limiting ring is provided around the insertion rod 26. A second spring 27 is installed between the limiting ring and the upper side of the inner wall of the square box 22. The second spring 27 is sleeved around the insertion rod 26. The upper side of the square box 22 has a box opening that is connected to the inner cavity of the square box 22. The insertion rod 26 passes through the box opening. A lifting block 25 is installed on the upper end face of the insertion rod 26. The lifting block 25 is located above the square box 22. By cooperating with the box opening and the through hole, the stability of the insertion rod 26 when sliding is improved. When the limiting ring releases the pressure on the second spring 27, the second spring 27 facilitates the quick insertion of the insertion rod 26 into the slot. The lifting block 25 facilitates the grip of the operator, improving the convenience of the operator to pull the insertion rod 26 out of the slot.

[0048] like Figure 5 As shown, in this embodiment, a ring 19 is provided around the square rod 17. A third spring 16 is installed between the ring 19 and one side of the housing 1. The third spring 16 is sleeved around the square rod 17. A cylinder hole is provided on one end face of the fixing cylinder 15. The cylinder hole is connected to the inner cavity of the fixing cylinder 15. The square rod 17 passes through the cylinder hole. A pressing plate 28 is provided on one side of the square rod 17. The pressing plate 28 is located on one side of the housing 1. When the ring 19 releases the pressure on the third spring 16, the third spring 16 rebounds, which facilitates the square rod 17 to drive the locking block 18 to quickly lock into the slot. The pressing plate 28 increases the pressing area of ​​the square rod 17, which makes it easier to push the square rod 17 into the slot and improves the convenience of unlocking the locking block 18.

[0049] like Figure 1 , 2As shown, the collection component of this embodiment includes a collection box 4, which is located on the lower side of the inner wall of the box body 1. The collection box 4 is slidably fitted inside the box body 1. A second handle 5 is provided on one side of the collection box 4. The front of the box body 1 is provided with a box opening, which is located below the pull-out groove. The box opening is connected to the inner cavity of the box body 1. The collection box 4 passes through the box opening. The second handle 5 makes it easy for the staff to grip and improves the convenience for the staff to pull the collection box 4 out of the box body 1.

[0050] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.

Claims

1. A waterproof coating filtration device with a quickly replaceable filter screen, characterized in that, include: The housing (1) is equipped with a cleaning filter assembly and a collection assembly; The cleaning filter assembly includes a push-pull frame (6) and two locking blocks (18). The push-pull frame (6) has a trapezoidal block (24) on one side and fixed cylinders (15) on both sides. The trapezoidal block (24) extends horizontally to the outside of the housing (1). The push-pull frame (6) and the fixed cylinders (15) are slidably fitted inside the housing (1). A corresponding connector for the trapezoidal block (24) is provided on the back of the housing (1). The push-pull frame (6) has a vertically oriented collection groove and a replacement groove on one side. A filter plate (7) and a scraper (13) corresponding to the filter plate (7) are slidably fitted inside the collection groove. The filter plate (7) has a first handle (8) on one side and a sliding plate (14) on both sides. The sliding plate (14) is slidably fitted in the replacement groove. The upper side of the sliding plate (14) has a channel that runs through the side of the sliding plate (14) near the trapezoidal block (24). The outer sides of the two channels are provided with slots. The locking block (18) is locked in the corresponding slot. The upper side of the locking block (18) is provided with a square rod (17). The sliding frame (6) has sliding grooves on both sides. One end of the square rod (17) is slidably fitted in the corresponding sliding groove. The middle part of the square rod (17) is elastically slid in the fixed cylinder (15).

2. The waterproof coating filtration device with a quickly replaceable filter screen according to claim 1, characterized in that, The upper side of the box (1) is provided with a feeding hopper (2), and the lower side of the box is provided with four support columns (3).

3. The waterproof coating filtration device with a quickly replaceable filter screen according to claim 1, characterized in that, The front of the box (1) is provided with a pull-out groove and both sides are provided with rectangular grooves. The rectangular grooves penetrate the front of the box (1). The push-pull frame (6) is slidably fitted in the pull-out groove, and the fixed cylinder (15) is slidably fitted in the corresponding rectangular groove.

4. A waterproof coating filtration device with a quickly replaceable filter screen according to claim 1, characterized in that, A motor (10) is embedded in one side of the collection trough. The output shaft of the motor (10) is fixedly connected to a screw (11). A slot is provided on the side of the collection trough away from the motor (10). One end of the screw (11) is rotatably fitted in the slot. The scraper (13) is threadedly fitted on the periphery of the screw (11).

5. A waterproof coating filtration device with a quickly replaceable filter screen according to claim 1, characterized in that, The connector includes a square box (22) installed on the back of the housing (1), a trapezoidal block (24) located away from the push-pull frame (6) at one end inside the square box (22), a slot provided on the upper side of the trapezoidal block (24), and a plug rod (26) elastically sliding inside the square box (22), with the lower end of the plug rod (26) engaged in the slot.

6. A waterproof coating filtration device with a quickly replaceable filter screen according to claim 5, characterized in that, A partition (23) is provided between the two sides of the inner wall of the square box (22). The partition (23) has a through hole in the vertical direction. The insertion rod (26) passes through the through hole. A limiting ring is provided around the insertion rod (26). A second spring (27) is installed between the limiting ring and the upper side of the inner wall of the square box (22). The upper side of the square box (22) has a box opening. The insertion rod (26) passes through the box opening.

7. A waterproof coating filtration device with a quickly replaceable filter screen according to claim 1, characterized in that, A ring (19) is provided around the square rod (17). A third spring (16) is installed between the ring (19) and one side of the box (1). A cylinder hole is provided on one end face of the inner wall of the fixed cylinder (15). The square rod (17) passes through the cylinder hole.

8. A waterproof coating filtration device with a quickly replaceable filter screen according to claim 1, characterized in that, The collection component includes a collection box (4), which is slidably fitted inside the box body (1), and a second handle (5) is provided on one side of the collection box (4).

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