Carton type paint mist filter and use method thereof

Abstract

The invention relates to the technical field of paint mist filtering, and discloses a carton type paint mist filter which comprises fixed beams in a rectangular array, a bottom plate is slidably connected to the interiors of the fixed beams in bilateral symmetry on the lower side, a top plate is slidably connected to the interiors of the fixed beams in bilateral symmetry on the upper side, and a fixed clamping plate is fixedly connected to the top of the bottom plate. A filtering drawer is slidably connected to the interior of the fixed clamping plate, a cover plate is rotatably connected to one side of the interior of the filtering drawer, the outer wall of the cover plate is meshed with the inner wall of the fixed clamping plate, and sliding blocks are slidably connected to the two sides of the interior of the fixed clamping plate. The bottom plate, the hollowed-out plate, the top plate and the side plates are assembled through the fixing beams, the bottom plate, the hollowed-out plate, the top plate and the side plates can be inserted into the inserting grooves formed in the fixing beams through the first clamping balls, and then the first clamping balls are fixed through the acting force of the elastic pieces, so that the carton type paint mist filter is rapidly spliced, transportation and installation are convenient, meanwhile, single-face replacement can be conducted, and the replacement efficiency is improved. Therefore, the maintenance cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of paint mist filtering, in particular to a carton type paint mist filter and a use method thereof. Background Art

[0002] During the painting process, due to the influence of airflow, technique and other factors, some raw paint will escape and form paint mist. These paint mists will not only pollute the environment, but also threaten the health of operators. Therefore, paint mist filtration has become an indispensable part of the painting process. It aims to effectively filter out these paint mists. There are many ways to filter paint mists. One of the common ways is to use a carton-type paint mist filter. This filter uses a special carton as the filter medium, which can effectively capture and filter paint mist particles.

[0003] The working principle of the carton paint mist filter is based on physical interception and adsorption. When the paint mist passes through the filter, the filter material in the carton will absorb the paint mist particles and prevent them from spreading further. This filter has the following advantages: simple structure, easy installation and maintenance; high filtration efficiency, can effectively remove paint mist; relatively low cost, economical and practical.

[0004] Carton-type paint mist filters usually use thick cardboard or special adsorption cartons as filter media. The filtering capacity of this material is usually limited, and the filtering efficiency for tiny paint mist particles or harmful gases is not high. Therefore, it is impossible to completely capture pollutants of all sizes and types. In a high-load industrial environment, the emission of paint mist is large. At the same time, when using a carton-type filter, the carton-type filter needs to be replaced regularly, which increases operating costs and maintenance costs. Therefore, a carton-type paint mist filter and a method of using the same are proposed to solve the above problems. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a carton type paint mist filter and a method of using the same, which solves the problem that the carton type paint mist filter in the prior art usually uses thick cardboard or a special adsorption carton as the filter medium, which leads to limited filtering effect.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a carton-type paint mist filter and a method for using the same, comprising a rectangular array of fixed beams, a bottom plate slidably connected inside the fixed beams symmetrically on the lower side, a top plate slidably connected inside the fixed beams symmetrically on the upper side, a fixed splint fixedly connected to the top of the bottom plate, a filter drawer slidably connected inside the fixed splint, a cover plate rotatably connected to one side of the interior of the filter drawer, an outer wall of the cover plate meshes with the inner wall of the fixed splint, sliding blocks slidably connected to both sides of the interior of the fixed splint, an elastic rope fixedly connected to the top of the sliding block, one side of the elastic rope fixedly connected to the interior of the fixed splint, a movable rod rotatably connected to one side of the top of the sliding block, the outer wall of the movable rod slidably connected to the interior of the fixed splint, and two outer walls of the filter drawer The sides are provided with a card slot 1, one side of the outer wall of the movable rod is slidably connected to the inside of the card slot 1, and limited slots are provided on both sides of the outer wall of the filter drawer, one side of the outer wall of the sliding block is slidably connected to the inside of the limit slot, and both sides of the interior of the fixed splint are fixedly connected to the telescopic rod, one end of the telescopic rod is fixedly connected to a button, the outer wall of the button is slidably connected to the inside of the fixed splint, and the top of the button is fixedly connected with a wedge-shaped card block, and the outer wall of the wedge-shaped card block is slidably connected to the inside of the sliding block, the outer wall of the telescopic rod is sleeved with a spring 1, one end of the spring 1 is fixedly connected to the inner wall of the fixed splint, and the other end of the spring 1 is fixedly connected to the inner wall of the button, a plurality of placement slots are provided inside the top plate, and a removal component is provided on the top of the filter drawer, and the removal component is used to take the filter drawer out of the fixed splint.

[0007] Preferably, the removal assembly includes a fixing plate and a handle, the bottom of the fixing plate is fixedly connected to the top of the filter drawer, both ends of the handle are fixedly connected to the inside of the fixing plate, and the outer wall of the fixing plate is slidably connected to the inside of the placement groove.

[0008] Preferably, the bottom plate and one side of the outer wall of the top plate are fixedly connected with a plurality of fixing columns, the insides of the upper and lower symmetrical fixed beams are slidably connected with side plates, and the insides of the fixed beams are slidably connected with hollow plates on both sides.

[0009] Preferably, the outer wall of the fixed beam is provided with a plurality of slots, the bottom plate and one side of the outer wall of the side plate are fixedly connected with a plurality of fixing columns, a plurality of groups of left-right symmetrical spring sheets are fixedly connected inside the fixed beam, a locking ball is fixedly connected to one end of the fixed column, and both sides of the spring sheets are fixedly connected to the inner walls of the slots.

[0010] Preferably, the locking ball is slidably connected inside the slot, and the outer wall of the fixing column fits with the outer wall of the spring sheet.

[0011] Preferably, a portion of the outer walls of the fixed beams are provided with a plurality of slide grooves, and another portion of the outer walls of the fixed beams are fixedly connected with a sliding rod.

[0012] Preferably, the outer wall of the sliding rod is slidably connected to the first slide groove, and a plurality of second card grooves are provided inside the fixed beam, and the second card grooves are provided on the inner wall of the first slide groove.

[0013] Preferably, a plurality of slide grooves 2 are provided inside the sliding rod, a plurality of clamping balls 2 are slidably connected inside the sliding rod, and the outer wall of the clamping balls 2 is slidably connected inside the slide grooves 2.

[0014] Preferably, a plurality of springs 2 are arranged inside the sliding rod, one end of the spring 2 is fixedly connected to one side of the outer wall of the clamping ball 2, and the other end of the spring 2 is fixedly connected to the inner wall of the sliding rod.

[0015] A method for using a carton-type paint mist filter comprises the following steps:

[0016] Step 1: Install the filter drawer

[0017] A filter drawer filled with a high efficiency filter compound such as activated carbon is inserted into the retaining cleat.

[0018] The sliding block will slide into the limit groove of the filter drawer, press down the sliding block and lock it through the wedge-shaped block. When the sliding block slides down, it drives the movable rod to fix the filter drawer.

[0019] Step 2: Remove the filter drawer

[0020] Press the button to slide the wedge apart.

[0021] The sliding block slides upward under the action of the elastic rope, thereby driving the filter drawer to move upward for easy removal.

[0022] Step 3: Combined use

[0023] The bottom plate, hollow plate, top plate and side plates of the filter are connected through fixed columns and clamping balls, inserted into the slots of the fixed beams, and reset and fixed by springs.

[0024] When used in combination, the sliding rod slides into the sliding groove of another filter, and the card ball is reset to fix the two filters, so that the two filters are combined and fixed.

[0025] The present invention provides a carton-type paint mist filter and a method for using the same. It has the following beneficial effects:

[0026] 1. The present invention is assembled by a bottom plate, a hollow plate, a top plate and a side plate through a fixed beam, and the three can be inserted into a slot opened inside the fixed beam through a card ball, and then the card ball is fixed by the force of the spring sheet, so that the carton type paint mist filter can be quickly spliced, thereby facilitating its transportation and installation, and a single side can be replaced, thereby reducing its maintenance cost.

[0027] 2. In the present invention, the sliding rod on the fixed beam slides into the interior of the fixed beam of another carton-type paint mist filter, so that the force of the second spring causes the second card ball to float, and the second card ball is then inserted into the second card slot, so that the two carton-type paint mist filters can be combined, making their combined use more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A three-dimensional schematic diagram of the invention;

[0029] Figure 2 A schematic diagram of the explosion structure of the invention;

[0030] Figure 3 It is a schematic diagram of the cross-sectional structure of the filter drawer of the invention;

[0031] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0032] Figure 5 It is a schematic diagram of the fixed beam structure of the invention;

[0033] Figure 6 for Figure 5 Enlarged view of point B in the middle;

[0034] Figure 7 is a schematic diagram of a cross-sectional structure of a slider rod of the invention;

[0035] Figure 8 for Figure 7 Enlarged view of center C.

[0036] Among them, 1. fixed beam; 2. bottom plate; 3. side plate; 4. top plate; 5. fixed plate; 6. hollow plate; 7. fixed splint; 8. filter drawer; 9. handle; 10. placement slot; 11. cover plate; 12. button; 13. spring one; 14. telescopic rod; 15. sliding block; 16. wedge-shaped block; 17. elastic rope; 18. limit slot; 19. movable rod; 20. slot one; 21. fixed column; 22. card ball one; 23. slot; 24. spring; 25. sliding rod; 26. slide slot one; 27. slide slot two; 28. spring two; 29. ​​card ball two; 30. slide slot two. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Example:

[0039] Please refer to the attached Figure 1 -Attached Figure 4 , the embodiment of the present invention provides a carton type paint mist filter and a method of using the same, comprising: a rectangular array of fixed beams 1, a bottom plate 2 is slidably connected inside the lower left-right symmetrical fixed beams 1, a top plate 4 is slidably connected inside the upper left-right symmetrical fixed beams 1, a fixed clamping plate 7 is fixedly connected to the top of the bottom plate 2, a filter drawer 8 is slidably connected inside the fixed clamping plate 7, a cover plate 11 is rotatably connected to one side of the filter drawer 8, the outer wall of the cover plate 11 is meshed with the inner wall of the fixed clamping plate 7, sliding blocks 15 are slidably connected to both sides of the fixed clamping plate 7, an elastic rope 17 is fixedly connected to the top of the sliding block 15, one side of the elastic rope 17 is fixedly connected to the inside of the fixed clamping plate 7, a movable rod 19 is rotatably connected to one side of the top of the sliding block 15, the outer wall of the movable rod 19 is slidably connected to the inside of the fixed clamping plate 7, a card slot 20 is provided on both sides of the outer wall of the filter drawer 8, one side of the outer wall of the movable rod 19 is slidably connected to the inside of the card slot 20, and a card slot 20 is provided on both sides of the outer wall of the filter drawer 8 A limiting groove 18 is provided, and one side of the outer wall of the sliding block 15 is slidably connected to the inside of the limiting groove 18. Both sides of the fixed splint 7 are fixedly connected with telescopic rods 14, and one end of the telescopic rod 14 is fixedly connected with a button 12. The outer wall of the button 12 is slidably connected to the inside of the fixed splint 7. A wedge-shaped block 16 is fixedly connected to the top of the button 12, and the outer wall of the wedge-shaped block 16 is slidably connected to the inside of the sliding block 15. A spring 13 is sleeved on the outer wall of the telescopic rod 14, and one end of the spring 13 is fixedly connected to the inner wall of the fixed splint 7, and the other end of the spring 13 is fixedly connected to the inner wall of the button 12. A plurality of placement grooves 10 are provided inside the top plate 4, and a removal component is provided on the top of the filter drawer 8. The removal component is used to take the filter drawer 8 out of the fixed splint 7. The removal component includes a fixed plate 5 and a handle 9. The bottom of the fixed plate 5 is fixedly connected to the top of the filter drawer 8, and both ends of the handle 9 are fixedly connected to the inside of the fixed plate 5. The outer wall of the fixed plate 5 is slidably connected to the inside of the placement groove 10.

[0040] The carton-type paint mist filter improves the filtering efficiency by filling the filter drawer 8 with high-efficiency filtering compounds such as activated carbon. During operation, when the filter drawer 8 is placed inside the fixed clamping plate 7, the high-efficiency filtering compounds such as activated carbon inside will effectively capture and filter the paint mist and other pollutants in the air, thereby accelerating the filtering efficiency.

[0041] In order to facilitate replacement and maintenance, a cover plate 11 is provided on the filter drawer 8. By opening the cover plate 11, the user can easily replace the filter filler inside, ensuring that the filter always maintains efficient operation. When the filter drawer 8 is placed inside the fixing clamp 7, the fixing clamp 7 will press the cover plate 11 and the filter drawer 8 to ensure that the cover plate 11 is tightly closed to avoid any air leakage.

[0042] When the filter drawer 8 is inserted into the fixed clamping plate 7, the sliding block 15 inside the fixed clamping plate 7 will automatically slide into the limiting groove 18 on the outer wall of the filter drawer 8. As the filter drawer 8 is pushed forward, the sliding block 15 will be pressed down, and the sliding block 15 sliding downward passes the inclined surface of the wedge-shaped clamping block 16 at its bottom, so that the wedge-shaped clamping block 16 drives the button 12 to slide into the fixed clamping plate 7. When the wedge-shaped clamping block 16 is completely inserted into the sliding block 15, the force of the spring 13 will cause the button 12 to slide outward and reset, thereby hooking the sliding block 15 and locking it in an appropriate position.

[0043] When the sliding block 15 slides down, it will drive the movable rod 19 to slide out from the inside of the fixed clamping plate 7, and insert it into the clamping groove 20 set on the outer wall of the filter drawer 8 through the protrusion on the other side, so as to firmly fix the filter drawer 8 inside the fixed clamping plate 7 to ensure its stability and sealing.

[0044] When the filter drawer 8 needs to be taken out, the user can press the button 12, which will drive the wedge-shaped block 16 to slide inside the fixed clamping plate 7, so that the sliding block 15 is separated from the wedge-shaped block 16. At this time, the sliding block 15 will slide down due to gravity, pulling the elastic cord 17. After the sliding block 15 loses the restriction of the wedge-shaped block 16, the elastic force of the elastic cord 17 will quickly pull the sliding block 15 upward, thereby driving the filter drawer 8 to slide upward, making it easier for the user to take out the filter drawer 8.

[0045] Please refer to the attached Figure 5 -Attached Figure 8 , multiple fixing columns 21 are fixedly connected to one side of the outer wall of the bottom plate 2 and the top plate 4, the side plates 3 are slidably connected inside the upper and lower symmetrical fixed beams 1, hollow plates 6 are slidably connected on both sides of the fixed beams 1, and multiple slots 23 are opened on the outer wall of the fixed beam 1, multiple fixing columns 21 are fixedly connected to one side of the outer wall of the bottom plate 2 and the side plates 3, and multiple groups of left-right symmetrical springs 24 are fixedly connected inside the fixed beam 1, one end of the fixing column 21 is fixedly connected to a card ball 22, both sides of the spring piece 24 are fixedly connected to the inner wall of the slot 23, the card ball 22 is slidably connected inside the slot 23, and the outer wall of the fixing column 21 fits with the outer wall of the spring piece 24.

[0046] When assembling the carton-type paint mist filter, the bottom plate 2, the hollow plate 6, the top plate 4 and the side plate 3 need to be connected according to the designed position. Each connection is connected with a clamping ball 22 through a fixing column 21. First, align the clamping ball 22 on the fixing column 21 with the slot 23 on the outer wall of the fixing beam 1. Then, apply appropriate force to gradually insert the clamping ball 22 into the slot 23.

[0047] During the force application process, the first card ball 22 pushes the spring sheet 24 on the inner wall of the slot 23, temporarily pressing it down, providing space for the first card ball 22 to enter the slot 23. When the first card ball 22 is fully inserted into the slot 23, the spring sheet 24 on the inner wall of the slot 23 will quickly reset due to its own elasticity. The reset spring sheet 24 fits tightly with the fixing column 21, firmly fixing the first card ball 22 inside the slot 23.

[0048] In this way, the connection between the bottom plate 2, the hollow plate 6, the top plate 4 and the side plate 3 can be ensured to be stable and reliable. The design of the fixed beam 1 enables each component to be accurately aligned, and the cooperation between the clamping ball 22 and the slot 23 enables fast and firm assembly.

[0049] The entire assembly process is efficient and simple, and can be completed by simply inserting and applying force. The elastic reset function of the spring 24 ensures the stability of the connection and will not loosen due to vibration or external force during use. Through this assembly method, the carton-type paint mist filter can be assembled in a short time, and the stability and durability of the structure are guaranteed, which improves the safety and reliability during use.

[0050] A plurality of slide grooves 26 are provided on the outer wall of a part of the fixed beam 1, and a sliding rod 25 is fixedly connected to the outer wall of the other part of the fixed beam 1, and the outer wall of the sliding rod 25 is slidably connected to the slide groove 26. A plurality of clamping grooves 27 are provided inside the fixed beam 1, and the clamping grooves 27 are provided on the inner wall of the slide groove 26. A plurality of slide grooves 30 are provided inside the sliding rod 25, and a plurality of clamping balls 29 are slidably connected inside the sliding rod 25, and the outer wall of the clamping balls 29 is slidably connected inside the slide groove 30. A plurality of springs 28 are provided inside the sliding rod 25, and one end of the spring 28 is fixedly connected to one side of the outer wall of the clamping ball 29, and the other end of the spring 28 is fixedly connected to the inner wall of the sliding rod 25.

[0051] When the carton-type paint mist filter is used in combination, the sliding rod 25 on the fixing beam 1 of one filter is first aligned with the slide groove 1 26 inside the fixing beam 1 of another filter. Then, appropriate force is applied to slowly slide the sliding rod 25 into the slide groove 1 26. As the sliding rod 25 is gradually pushed forward, the clamping ball 29 inside the sliding rod 25 will be compressed due to the pressure from the inner wall of the slide groove 1 26. At this time, the clamping ball 29 will overcome the reaction force of the spring 28 and retract into the inside of the sliding rod 25.

[0052] When the sliding rod 25 continues to slide to the end of the first slide groove 26, that is, the second clamping groove 27, the second clamping ball 29 will lose the restriction of the inner wall of the first slide groove 26, and the second spring 28 will quickly reset the second clamping ball 29 to make it clamp into the second clamping groove 27. In this way, the two carton-type paint mist filters can be firmly connected together to ensure that they will not be separated due to vibration or external force during use.

[0053] This combined connection method is not only simple and efficient, but also ensures a firm connection between the filters, avoiding loosening or falling off during use. The design of the card ball 29 and the spring 28 cleverly utilizes the mechanical locking principle, making the connection and disassembly process quick and reliable, thereby improving the convenience and safety of the filter.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A carton-type paint mist filter, comprising a rectangular array of fixed beams (1), characterized in that: The bottom plate (2) is slidably connected to the interior of the left-right symmetrical fixed beam (1) at the lower side, and the top plate (4) is slidably connected to the interior of the left-right symmetrical fixed beam (1) at the upper side. The top of the bottom plate (2) is fixedly connected to a fixed clamping plate (7), and the interior of the fixed clamping plate (7) is slidably connected to a filter drawer (8). A cover plate (11) is rotatably connected to one side of the interior of the filter drawer (8), and the outer wall of the cover plate (11) is meshed with the inner wall of the fixed clamping plate (7). Both sides of the interior of the fixed clamping plate (7) are slidably connected to the top of the bottom plate (2). The filter drawer (8) is rotatably connected to a sliding block (15), the top of the sliding block (15) is fixedly connected to an elastic rope (17), one side of the elastic rope (17) is fixedly connected to the inside of the fixed clamping plate (7), one side of the top of the sliding block (15) is rotatably connected to a movable rod (19), the outer wall of the movable rod (19) is slidably connected to the inside of the fixed clamping plate (7), and both sides of the outer wall of the filter drawer (8) are provided with a card slot (20), and one side of the outer wall of the movable rod (19) is slidably connected to the card slot (20) ), both sides of the outer wall of the filter drawer (8) are provided with limiting grooves (18), one side of the outer wall of the sliding block (15) is slidably connected to the inside of the limiting groove (18), both sides of the inside of the fixed clamping plate (7) are fixedly connected with telescopic rods (14), one end of the telescopic rod (14) is fixedly connected with a button (12), the outer wall of the button (12) is slidably connected to the inside of the fixed clamping plate (7), the top of the button (12) is fixedly connected with a wedge-shaped card block (16), and the wedge-shaped card block (16) is fixedly connected to the inside of the fixed clamping plate (7). 6) The outer wall is slidably connected to the inside of the sliding block (15), the outer wall of the telescopic rod (14) is sleeved with a spring (13), one end of the spring (13) is fixedly connected to the inner wall of the fixed clamp (7), and the other end of the spring (13) is fixedly connected to the inner wall of the button (12), a plurality of placement grooves (10) are opened inside the top plate (4), and a removal component is arranged on the top of the filter drawer (8), and the removal component is used to remove the filter drawer (8) from the inside of the fixed clamp (7).

2. A carton-type paint mist filter according to claim 1, characterized in that: The removal assembly comprises a fixing plate (5) and a handle (9), wherein the bottom of the fixing plate (5) is fixedly connected to the top of the filter drawer (8), both ends of the handle (9) are fixedly connected to the inside of the fixing plate (5), and the outer wall of the fixing plate (5) is slidably connected to the inside of the placement groove (10).

3. A carton-type paint mist filter according to claim 1, characterized in that: A plurality of fixing columns (21) are fixedly connected to one side of the outer wall of the bottom plate (2) and the top plate (4), a side plate (3) is slidably connected inside the upper and lower symmetrical fixing beams (1), and hollow plates (6) are slidably connected to both sides of the fixing beams (1).

4. A carton-type paint mist filter according to claim 3, characterized in that: The outer wall of the fixed beam (1) is provided with a plurality of slots (23); one side of the outer wall of the bottom plate (2) and the side plate (3) is fixedly connected with a plurality of fixed columns (21); the interior of the fixed beam (1) is fixedly connected with a plurality of groups of bilaterally symmetrical spring sheets (24); one end of the fixed column (21) is fixedly connected with a clamping ball (22); and both sides of the spring sheet (24) are fixedly connected to the inner wall of the slot (23).

5. The carton-type paint mist filter according to claim 1, characterized in that: The locking ball (22) is slidably connected inside the slot (23), and the outer wall of the fixing column (21) is in contact with the outer wall of the spring sheet (24).

6. The carton-type paint mist filter according to claim 1, characterized in that: The outer wall of a portion of the fixed beam (1) is provided with a plurality of sliding grooves (26), and the outer wall of another portion of the fixed beam (1) is fixedly connected with a sliding rod (25).

7. The carton-type paint mist filter according to claim 1, characterized in that: The outer wall of the sliding rod (25) is slidably connected to the sliding groove (26), and a plurality of second clamping grooves (27) are provided inside the fixed beam (1), and the second clamping grooves (27) are provided on the inner wall of the sliding groove (26).

8. The carton-type paint mist filter according to claim 1, characterized in that: A plurality of slide grooves (30) are provided inside the sliding rod (25), a plurality of clamping balls (29) are slidably connected inside the sliding rod (25), and the outer wall of the clamping ball (29) is slidably connected inside the slide groove (30).

9. The carton-type paint mist filter according to claim 1, characterized in that: A plurality of springs (28) are arranged inside the sliding rod (25), one end of the spring (28) is fixedly connected to one side of the outer wall of the clamping ball (29), and the other end of the spring (28) is fixedly connected to the inner wall of the sliding rod (25).

10. A method for using a carton-type paint mist filter, according to the carton-type paint mist filter according to claims 1-9, characterized in that: The following steps are involved: Step 1: Install the filter drawer A filter drawer filled with a high efficiency filter compound such as activated carbon is inserted into the retaining cleat. The sliding block will slide into the limit groove of the filter drawer, press down the sliding block and lock it through the wedge-shaped block. When the sliding block slides down, it drives the movable rod to fix the filter drawer. Step 2: Remove the filter drawer Press the button to slide the wedge apart. The sliding block slides upward under the action of the elastic rope, thereby driving the filter drawer to move upward for easy removal. Step 3: Combined use The bottom plate, hollow plate, top plate and side plates of the filter are connected through fixed columns and clamping balls, inserted into the slots of the fixed beams, and reset and fixed by springs. When used in combination, the sliding rod slides into the sliding groove of another filter, and the card ball is reset to fix the two filters, so that the two filters are combined and fixed.

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