High efficiency air filter with easy replacement filter element

Abstract

The present invention discloses a high-efficiency air filter that is convenient for replacing filter elements, and relates to the technical field of air filters, including a box body, a through hole is provided on the top of the box body, a plurality of support columns are fixedly installed on the top of the box body, an induced draft fan is fixedly installed on the top of the plurality of support columns, a connecting cylinder is installed on the air intake end of the induced draft fan, the connecting cylinder is located in the through hole, an intermediate ring coaxially arranged therewith is fixed inside the connecting cylinder, and a plurality of piston cylinders are fixed on the intermediate ring. The present invention places a filter element skeleton on a lifting assembly, the lifting assembly pushes the filter element skeleton into the connecting cylinder, the filter element skeleton pushes each contact plate upward, the contact plate pushes the sliding column into the piston cylinder, the first spring is compressed, and the piston plate on the sliding column pushes the gas in the piston cylinder into the annular groove to form a closed space with the rubber ring, the air pressure in the closed space is increased, the rubber ring expands and fits tightly with the connecting cylinder, and the sealing is completed.

Description

Technical Field

[0001] The invention relates to the technical field of air filters, in particular to a high-efficiency air filter with a convenient filter element replacement. Background Art

[0002] Air purifiers can absorb, decompose or transform various dust, pollen, odors, bacteria, and allergens in the air. Air purifiers are mainly composed of a shell, filter element, electrical and control components. After an air purifier has been used for a long time, the filter element will be filled with impurities, making the purification effect of the air purifier poor, so the filter element in the air purifier needs to be replaced.

[0003] After searching, the Chinese patent with the authorization announcement number CN214680592U discloses an air purifier that is convenient for replacing filter elements, including a shell, a vent is provided on the surface of the shell, a base is fixedly connected to the lower surface of the shell, a non-slip pad is fixedly connected to the lower surface of the base, an end cover is provided on the upper end surface of the shell, a convex block is fixedly connected to the upper surface of the end cover, a mounting block is fixedly connected to the inner wall of the shell, a slide groove and a mounting port are respectively provided on the upper surface of the mounting block, and a slider is slidably inserted on the inner surface of the slide groove. The patent is convenient for replacing the air purifier of the filter element, and the effect of controlling the first buckle is achieved. When in use, when the connection block is pressed down, the action block squeezes the slider, thereby driving the first buckle to move and canceling the limit of the second buckle, thereby solving the problem of inconvenience for users caused by the cumbersome process when replacing the filter element.

[0004] However, the above invention has the following shortcomings: although the above device can facilitate the replacement of the filter element, the above replacement mechanism does not take the sealing problem into consideration and cannot guarantee whether the sealing of the replaced filter element is qualified. Summary of the invention

[0005] The object of the present invention is to provide a high efficiency air filter with convenient filter element replacement, so as to solve the problems raised in the above background technology.

[0006] The technical solution of the present invention is: a high-efficiency air filter with convenient replacement of filter elements, comprising a box body, a through hole is provided on the top of the box body, a plurality of support columns are fixedly installed on the top of the box body, a draft fan is fixedly installed on the top of the plurality of support columns, a connecting cylinder is installed on the suction end of the draft fan, the connecting cylinder is located in the through hole, an intermediate ring coaxially arranged therewith is fixed inside the connecting cylinder, a plurality of piston cylinders are fixed on the intermediate ring, a piston plate is slidably arranged inside the piston cylinder, a sliding column is fixed at one end of the piston plate, a contact plate is fixed at one end of the sliding column, a first spring is sleeved on the outer side of the sliding column, and the first spring The two ends are in contact with the piston cylinder and the contact plate respectively, the inner side of the connecting cylinder is provided with an annular groove coaxially arranged therewith, the notch of the annular groove is fixed with a rubber ring coaxially arranged therewith, the annular groove and the rubber ring form a closed space, and the closed space is filled with gas, the inner side of the connecting cylinder is provided with a plurality of channels connected with the annular groove, the plurality of piston cylinders are aligned one-to-one with the plurality of channels, and a connecting pipe is provided between the channels aligned with the piston cylinders to connect the two, a filter element skeleton is provided in the box body, and a lifting component for pushing one end of the filter element skeleton into the interior of the connecting cylinder is provided inside the box body.

[0007] Preferably, universal wheels are fixed at the four corners of the bottom of the box.

[0008] Preferably, a door is hingedly mounted on one side of the box body.

[0009] Preferably, the lifting assembly includes a movable plate, first guide rails are fixed to both inner walls of the box body, and both sides of the movable plate are slidably mounted on the two first guide rails.

[0010] Preferably, reset structures are provided on both sides of the bottom of the movable plate, and the two reset structures include a double-section telescopic cylinder, a first fixed block, a second fixed block and a second spring. One end of the two double-section telescopic cylinders are respectively fixed to the two first fixed blocks, and the two first fixed blocks are respectively fixed to the inner walls on both sides of the box body, and the other end of the double-section telescopic cylinders are respectively fixed to the two second fixed blocks, and the two second fixed blocks are fixed to the movable plate, and the two second springs are respectively mounted on the two double-section telescopic cylinders.

[0011] Preferably, the lifting assembly also includes a rotating shaft, a circular plate, a space cam, a connecting rod, a first tooth plate and a transmission gear, one end of the rotating shaft is coaxially fixed with the circular plate, the other end of the rotating shaft is rotatably mounted on the bottom inner wall of the box body, the bottom of the space cam is fixed on the circular plate, a square hole is opened on the top of the movable plate, a square rod is slidably inserted in the square hole, a lifting platform is fixed on the top of the square rod, a pulley is rotatably mounted on the bottom end of the square rod, the pulley is arranged on the cam of the space cam, the transmission gear is coaxially fixed with the rotating shaft, a horizontally arranged second guide rail is fixed in the box body, the first tooth plate is slidably sleeved on the second guide rail, the first tooth plate is meshed with the transmission gear, and the two ends of the connecting rod are rotatably mounted on the box door and the first tooth plate respectively.

[0012] Preferably, a positioning block is fixed on the top of the lifting platform, and a positioning groove matched with the positioning block is formed at the bottom of the filter element skeleton.

[0013] Preferably, a connecting frame is fixed to the bottom of the movable plate, a second tooth plate is fixed to the bottom of the connecting frame, and an incomplete gear coaxially arranged therewith is fixed to the outer side of the rotating shaft.

[0014] The present invention provides a high-efficiency air filter with convenient filter element replacement through improvement, which has the following beneficial effects compared with the prior art:

[0015] First, in the present invention, the filter element skeleton is placed on the lifting assembly, the lifting assembly pushes the filter element skeleton into the connecting tube, the filter element skeleton pushes each contact plate upward, the contact plate pushes the sliding column into the piston tube, the first spring is compressed, and the piston plate on the sliding column pushes the gas in the piston tube into the annular groove to form a closed space with the rubber ring. The air pressure in the closed space is increased, the rubber ring expands and fits tightly with the connecting tube to complete the sealing. At the same time, when disassembling, the internal air pressure of the closed space is reduced, and the rubber ring retracts into the annular groove, reducing the contact between the rubber ring and the connecting tube and reducing the friction loss.

[0016] Second, in the present invention, when the box door is rotated outward, the box door pulls the first tooth plate through the connecting rod, the first tooth plate moves along the second guide rail, the first tooth plate shifts the transmission gear, the transmission gear drives the rotating shaft to rotate, the rotating shaft drives the circular plate to rotate, the space cam of the circular plate rotates with the circular plate, the space cam and the pulley on the square rod rotate relative to each other, the pulley moves to the lower part of the space cam, at this time the square rod moves downward, the square rod drives the lifting platform to move downward, the filter element frame moves downward with the lifting platform, and the filter element frame is separated from the connecting tube, which shows that the filter element disassembly method is simple and quick;

[0017] Third, in the present invention, the incomplete gear on the rotating shaft rotates synchronously with the rotating shaft. When the incomplete gear is engaged with the second tooth plate, the pulley is located at the bottom of the spatial cam, and the incomplete gear pushes the second tooth plate out of the box body. The second tooth plate pushes the movable plate out through the connecting frame. It can be seen that the filter element frame can be moved out of the box body autonomously for easy removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure inside the box of the present invention (the box door is in a perspective shape, and there is no schematic diagram of the induced draft fan);

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the frame without filter element inside the box of the present invention;

[0022] Figure 4 It is a schematic diagram of the partial internal structure of the connecting tube of the present invention;

[0023] Figure 5 It is a schematic diagram of the cross-sectional structure of the connecting tube of the present invention;

[0024] Figure 6 for Figure 3 A front view of

[0025] Figure 7 for Figure 6 AA cross-sectional structural diagram;

[0026] Figure 8 for Figure 6 BB cross-sectional structure diagram;

[0027] Fig. 9 for Figure 6 Schematic diagram of the CC cross-sectional structure.

[0028] 1. Box body; 2. Universal wheel; 3. Box door; 4. induced draft fan; 5. Connecting cylinder; 6. Filter element frame; 7. Lifting platform; 8. Moving plate; 9. First guide rail; 10. Square rod; 11. Pulley; 12. Round plate; 13. Space cam; 14. Connecting rod; 15. Second guide rail; 16. First tooth plate; 17. Transmission gear; 18. Incomplete gear; 19. Rotating shaft; 20. Positioning block; 21. Intermediate ring; 22. Connecting pipe; 23. Piston cylinder; 24. First spring; 25. Contact plate; 26. Rubber ring; 27. Annular groove; 28. Sliding column; 29. ​​Channel; 30. Piston plate; 31. Connecting frame; 32. Second tooth plate; 33. Double-section telescopic cylinder; 34. First fixed block; 35. Second fixed block; 36. Second spring. DETAILED DESCRIPTION

[0029] The present invention is described in detail below, and the technical solutions in the embodiments of the present invention are clearly and completely described. 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.

[0030] The present invention provides a high efficiency air filter with convenient filter element replacement through improvement. The technical solution of the present invention is:

[0031] like Figures 1 to 9 As shown, the embodiment of the present invention provides a high-efficiency air filter for convenient replacement of filter elements, including a box body 1, a through hole is provided on the top of the box body 1, a plurality of support columns are fixedly installed on the top of the box body 1, a draft fan 4 is fixedly installed on the top of the plurality of support columns, a connecting cylinder 5 is installed on the suction end of the draft fan 4, the connecting cylinder 5 is located in the through hole, an intermediate ring 21 coaxially arranged therewith is fixed inside the connecting cylinder 5, a plurality of piston cylinders 23 are fixed on the intermediate ring 21, a piston plate 30 is slidably arranged inside the piston cylinder 23, a sliding column 28 is fixed at one end of the piston plate 30, a contact plate 25 is fixed at one end of the sliding column 28, a first spring 24 is sleeved on the outer side of the sliding column 28, and the two ends of the first spring 24 are respectively The connecting cylinder 5 is provided with a coaxial annular groove 27, and a rubber ring 26 coaxially arranged therewith is fixed to the notch of the annular groove 27. The annular groove 27 and the rubber ring 26 form a closed space, and the closed space is filled with gas. The connecting cylinder 5 is provided with a plurality of channels 29 connected with the annular groove 27 on the inner side. The plurality of piston cylinders 23 are aligned with the plurality of channels 29 one by one, and a connecting pipe 22 is provided between the piston cylinders 23 and the channels 29 aligned therewith to connect the two. A filter element skeleton 6 is provided in the casing 1, and a lifting assembly for pushing one end of the filter element skeleton 6 into the interior of the connecting cylinder 5 is provided inside the casing 1.

[0032] Supplementary explanation is given to the filter element skeleton 6. A filtering structure is disposed on the outside of the filter element skeleton 6. Since the filtering structure is a prior art and has nothing to do with the innovation of the present invention, it is not shown in the figure.

[0033] The technical solution of the present invention is to place the filter element skeleton 6 on the jacking assembly, and the jacking assembly pushes the filter element skeleton 6 into the connecting tube 5. The filter element skeleton 6 pushes each contact plate 25 upward, and the contact plate 25 pushes the sliding column 28 into the piston tube 23. The first spring 24 is compressed, and the piston plate 30 on the sliding column 28 pushes the gas in the piston tube 23 into the annular groove 27 and the rubber ring 26 to form a closed space. The air pressure in the closed space increases, and the rubber ring 26 expands and fits tightly with the connecting tube 5 to complete the sealing. At the same time, when disassembling, the internal air pressure of the closed space decreases, and the rubber ring 26 retracts into the annular groove 27, reducing the contact between the rubber ring 26 and the connecting tube 5 and reducing friction loss.

[0034] Specifically, universal wheels 2 are fixed at the four corners of the bottom of the box 1;

[0035] In the present invention, the entire air filter is moved by the universal wheels 2 .

[0036] Specifically, a door 3 is hingedly mounted on one side of the box body 1;

[0037] In the present invention, the interior of the box body 1 is opened by rotating the box door 3 .

[0038] Specifically, the lifting assembly includes a moving plate 8, and first guide rails 9 are fixed to the inner walls of both sides of the box body 1, and both sides of the moving plate 8 are slidably sleeved on the two first guide rails 9;

[0039] In the present invention, the moving plate 8 moves linearly in the box body 1 along the first guide rail 9 .

[0040] Specifically, reset structures are provided on both sides of the bottom of the movable plate 8, and the two reset structures include a double-section telescopic cylinder 33, a first fixed block 34, a second fixed block 35 and a second spring 36. One end of the two double-section telescopic cylinders 33 is respectively fixed to the two first fixed blocks 34, and the two first fixed blocks 34 are respectively fixed to the inner walls of the box body 1 on both sides, and the other end of the double-section telescopic cylinder 33 is respectively fixed to the two second fixed blocks 35, and the two second fixed blocks 35 are fixed to the movable plate 8, and the two second springs 36 are respectively sleeved on the two double-section telescopic cylinders 33;

[0041] In the present invention, when the moving plate 8 moves out of the box body 1, the second fixing block 35 on the moving plate 8 presses the second spring 36, and the double-section telescopic cylinder 33 is compressed.

[0042] Specifically, the lifting assembly also includes a rotating shaft 19, a circular plate 12, a space cam 13, a connecting rod 14, a first tooth plate 16 and a transmission gear 17. One end of the rotating shaft 19 is coaxially fixed with the circular plate 12, and the other end of the rotating shaft 19 is rotatably mounted on the bottom inner wall of the box body 1. The bottom of the space cam 13 is fixed on the circular plate 12. A square hole is opened on the top of the movable plate 8, and a square rod 10 is slidably inserted in the square hole. A lifting platform 7 is fixed on the top of the square rod 10. A pulley 11 is rotatably mounted on the bottom end of the square rod 10. The pulley 11 is arranged on the cam of the space cam 13. The transmission gear 17 is coaxially fixed with the rotating shaft 19. A horizontally arranged second guide rail 15 is fixed in the box body 1. The first tooth plate 16 is slidably sleeved on the second guide rail 15. The first tooth plate 16 is meshed with the transmission gear 17. The two ends of the connecting rod 14 are rotatably mounted on the box door 3 and the first tooth plate 16 respectively.

[0043] Supplementary explanation is given to the above-mentioned space cam 13. The highest point and the lowest point of the space cam 13 are both kept horizontal for a certain distance.

[0044] In the present invention, Figure 2 In the initial state, when the box door 3 is rotated outward, the box door 3 pulls the first tooth plate 16 through the connecting rod 14, and the first tooth plate 16 moves along the second guide rail 15. The first tooth plate 16 shifts the transmission gear 17, and the transmission gear 17 drives the rotating shaft 19 to rotate, and the rotating shaft 19 drives the circular plate 12 to rotate, and the space cam 13 of the circular plate 12 rotates with the circular plate 12, and the space cam 13 and the pulley 11 on the square rod 10 rotate relative to each other, and the pulley 11 moves to the lower part of the space cam 13. At this time, the square rod 10 moves downward, and the square rod 10 drives the lifting platform 7 to move downward, and the filter element skeleton 6 moves downward with the lifting platform 7, and the filter element skeleton 6 is separated from the connecting tube 5. It can be seen that the filter element disassembly method is simple and quick.

[0045] Specifically, a positioning block 20 is fixed on the top of the lifting platform 7, and a positioning groove adapted to the positioning block 20 is provided at the bottom of the filter element skeleton 6;

[0046] In the present invention, the filter element skeleton 6 is sleeved on the positioning block 20 through the positioning groove.

[0047] Specifically, a connecting frame 31 is fixed to the bottom of the moving plate 8, a second tooth plate 32 is fixed to the bottom of the connecting frame 31, and an incomplete gear 18 coaxially arranged therewith is fixed to the outer side of the rotating shaft 19;

[0048] In the present invention, the incomplete gear 18 on the rotating shaft 19 rotates synchronously with the rotating shaft 19. When the incomplete gear 18 is engaged with the second tooth plate 32, the pulley 11 is located at the bottom of the spatial cam 13. The incomplete gear 18 pushes the second tooth plate 32 out of the box body 1. The second tooth plate 32 pushes the movable plate 8 outward through the connecting frame 31. It can be seen that the filter element frame 6 can be moved out of the box body 1 autonomously for easy removal.

[0049] Working principle: Figure 2 In the initial state, when the box door 3 is rotated outward, the box door 3 pulls the first tooth plate 16 through the connecting rod 14, and the first tooth plate 16 moves along the second guide rail 15. The first tooth plate 16 toggles the transmission gear 17, and the transmission gear 17 drives the rotating shaft 19 to rotate, and the rotating shaft 19 drives the circular plate 12 to rotate, and the space cam 13 of the circular plate 12 rotates with the circular plate 12, and the space cam 13 and the pulley 11 on the square rod 10 rotate relative to each other, and the pulley 11 moves to the lower part of the space cam 13. At this time, the square rod 10 moves downward, and the square rod 10 drives the lifting platform 7 to move downward, and the filter element skeleton 6 moves downward with the lifting platform 7, and the filter element skeleton 6 is separated from the connecting tube 5. The incomplete gear 18 on the rotating shaft 19 rotates synchronously with the rotating shaft 19. When the incomplete gear 18 is meshed with the second tooth plate 32, the pulley 11 is located at the bottom of the space cam 13. The incomplete gear 18 pushes the second tooth plate 32 out of the box body 1, and the second tooth plate 32 pushes the movable plate 8 outward through the connecting frame 31. When the movable plate 8 moves out of the box body 1, the second fixed block 35 on the movable plate 8 squeezes the second spring 36, and the double-section telescopic cylinder 33 is compressed. It can be seen that the filter element skeleton 6 can move out of the box body 1 autonomously; when the box door 3 is closed, the filter element skeleton 6 returns to the original path, and the filter element skeleton 6 is flushed and pushed into the connecting cylinder 5. The filter element skeleton 6 pushes each contact plate 25 upward, and the contact plate 25 pushes the sliding column 28 into the piston cylinder 23. The first spring 24 is compressed, and the piston plate 30 on the sliding column 28 pushes the gas in the piston cylinder 23 into the annular groove 27 and the rubber ring 26 to form a closed space. The air pressure in the closed space is increased, and the rubber ring 26 expands and fits tightly with the connecting cylinder 5 to complete the sealing.

[0050] The above description enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high efficiency air filter with a convenient filter element replacement, comprising a housing (1), characterized in that: A through hole is provided on the top of the box body (1), a plurality of support columns are fixedly mounted on the top of the box body (1), an induced draft fan (4) is fixedly mounted on the tops of the plurality of support columns, a connecting cylinder (5) is mounted on the air intake end of the induced draft fan (4), the connecting cylinder (5) is located in the through hole, an intermediate ring (21) coaxially arranged therewith is fixed inside the connecting cylinder (5), a plurality of piston cylinders (23) are fixed on the intermediate ring (21), a piston plate (30) is slidably mounted inside the piston cylinder (23), a sliding column (28) is fixed at one end of the piston plate (30), a contact plate (25) is fixed at one end of the sliding column (28), a first spring (24) is sleeved on the outer side of the sliding column (28), and the two ends of the first spring (24) are respectively connected to the piston cylinder (23) and the contact plate (25). ), the inner side of the connecting cylinder (5) is provided with an annular hollow groove (27) coaxially arranged therewith, the notch of the annular hollow groove (27) is fixed with a rubber ring (26) coaxially arranged therewith, the annular hollow groove (27) and the rubber ring (26) form a closed space, and the closed space is filled with gas, the inner side of the connecting cylinder (5) is provided with a plurality of channels (29) connected to the annular hollow groove (27), the plurality of piston cylinders (23) are aligned one-to-one with the plurality of channels (29), and a connecting pipe (22) is provided between the piston cylinders (23) and the channels (29) aligned therewith to connect the two, a filter element skeleton (6) is provided in the housing (1), and a lifting assembly for pushing one end of the filter element skeleton (6) into the interior of the connecting cylinder (5) is provided inside the housing (1); The lifting assembly comprises a movable plate (8), first guide rails (9) are fixed to the inner walls of both sides of the box body (1), and the two sides of the movable plate (8) are respectively slidably sleeved on the two first guide rails (9); Both sides of the bottom of the movable plate (8) are provided with a reset structure, and the two reset structures each comprise a double-section telescopic cylinder (33), a first fixed block (34), a second fixed block (35) and a second spring (36), one end of the two double-section telescopic cylinders (33) are respectively fixed to the two first fixed blocks (34), the two first fixed blocks (34) are respectively fixed to the inner walls of both sides of the box body (1), the other end of the two double-section telescopic cylinders (33) are respectively fixed to the two second fixed blocks (35), the two second fixed blocks (35) are both fixed to the movable plate (8), and the two second springs (36) are respectively sleeved on the two double-section telescopic cylinders (33); The lifting assembly further comprises a rotating shaft (19), a circular plate (12), a spatial cam (13), a connecting rod (14), a first toothed plate (16) and a transmission gear (17); one end of the rotating shaft (19) is coaxially fixed to the circular plate (12); the other end of the rotating shaft (19) is rotatably mounted on the bottom inner wall of the box body (1); the bottom of the spatial cam (13) is fixed on the circular plate (12); a square hole is formed on the top of the movable plate (8); a square rod (10) is slidably inserted into the square hole; a top end of the square rod (10) is fixed with a A lifting platform (7), a pulley (11) is rotatably mounted on the bottom end of the square rod (10), the pulley (11) is arranged on a cam of a space cam (13), the transmission gear (17) is coaxially fixed with a rotating shaft (19), a second guide rail (15) arranged horizontally is fixed in the box body (1), the first tooth plate (16) is slidably sleeved on the second guide rail (15), the first tooth plate (16) is meshed with the transmission gear (17), and the two ends of the connecting rod (14) are rotatably mounted on the box door (3) and the first tooth plate (16), respectively; A positioning block (20) is fixed on the top of the lifting platform (7), and a positioning groove adapted to the positioning block (20) is provided on the bottom of the filter element frame (6); A connecting frame (31) is fixed to the bottom of the movable plate (8), a second toothed plate (32) is fixed to the bottom of the connecting frame (31), and an incomplete gear (18) coaxially arranged therewith is fixed to the outer side of the rotating shaft (19).

2. The high efficiency air filter with convenient filter element replacement according to claim 1 is characterized in that: Universal wheels (2) are fixed at the four corners of the bottom of the box (1).

3. The high efficiency air filter with convenient filter element replacement according to claim 1 is characterized in that: A box door (3) is hingedly mounted on one side of the box body (1).

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