HEPA industrial filter screen

Abstract

The utility model relates to the technical field of filter screens, and discloses an HEPA industrial filter screen which comprises a box body, the upper end and the lower end of the box body are fixedly connected and communicated with an air inlet pipe and an air outlet pipe respectively, a plurality of screen changing openings are formed in one side of the box body in a penetrating mode, screen frames are arranged in the screen changing openings, HEPA filter screens are fixedly connected in the screen frames, and the HEPA filter screens are fixedly connected with the air inlet pipe and the air outlet pipe. Mounting assemblies are connected to the ends, close to the interior of the box body, of the multiple screen frames, frame drawing assemblies are connected to the ends, away from the box body, of the multiple screen frames, guide grooves are formed in the two sides of the multiple screen frames, sliding rails are slidably connected into the multiple guide grooves, and the multiple sliding rails are fixedly connected with the inner wall of the box body. According to the HEPA industrial filter screen, the multiple sets of HEPA filter screens are arranged, so that when one set of HEPA filter screen is replaced, industrial waste gas can be effectively filtered through the other HEPA filter screen, a filter system does not need to be stopped any more, and the filter efficiency of the industrial waste gas is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of filter screens, in particular to a HEPA industrial filter screen. Background Art

[0002] HEPA in Chinese means high-efficiency air filter. The filter that meets the HEPA standard has an efficiency of 99.7% for 0.1 micron and 0.3 micron. The characteristic of HEPA filter is that air can pass through, but fine particles cannot pass through. The HEPA filter can remove particles with a diameter of more than 0.3 micron with an efficiency of more than 99.7%. It is the most effective filtering medium for pollutants such as smoke, dust and bacteria. Therefore, it is widely used in the air supply terminal of air conditioners in dust-free purification workshops in optical electronics, LCD liquid crystal manufacturing, biomedicine, precision instruments, beverages and foods, PCB printing and other industries; especially in industry, it is widely used.

[0003] For example, an industrial waste gas purification device disclosed in the patent with publication number CN218280998U includes a bottom plate, a first purification box is fixedly connected to the left side of the top of the bottom plate, a second purification box is fixedly connected to the right side of the top of the bottom plate, and a drive box is fixedly connected between the first purification box and the second purification box. The utility model solves the problem that the existing industrial waste gas purification device for desulfurization and denitrification of environmental protection projects is not convenient for cleaning the filter plate during use, which easily causes the filter plate to be blocked, and the waste gas cannot be fully contacted with the purification liquid, thereby reducing the purification efficiency of the purification device.

[0004] However, the industrial filtration device in the above technology still has the following problems:

[0005] Since the HEPA filter needs to be replaced regularly, in order to avoid ineffective filtration of industrial waste gas when replacing the HEPA filter, the air inlet pipe on the waste gas filter box needs to be closed and the industrial waste gas can only be filtered again after the HEPA filter is replaced. The filtration efficiency is poor. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a HEPA industrial filter, such as: by setting up multiple groups of HEPA filters, it is ensured that when one group is replaced, the other HEPA filters can continue to effectively filter the industrial waste gas, thereby improving the waste gas filtration efficiency.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a HEPA industrial filter, comprising a box body, wherein the upper and lower ends of the box body are respectively fixedly connected and connected with an air inlet pipe and an air outlet pipe, a plurality of net changing ports are penetrated through one side of the box body, a net frame is provided in each of the net changing ports, a HEPA filter is fixedly connected in each of the net frames, a mounting assembly is connected to one end of each of the net frames close to the box body, a frame drawing assembly is connected to one end of each of the net frames away from the box body, guide grooves are provided on both sides of each of the net frames, slide rails are slidably connected in each of the guide grooves, and the slide rails are fixedly connected to the inner wall of the box body.

[0008] Furthermore, the mounting assembly includes a mounting plate and two sealing strips, one side of the mounting plate is connected to the side of the mesh frame located inside the box, the side of the mounting plate away from the mesh frame is abutted against the inner wall of the box, the two sealing strips are respectively fixedly connected to the upper and lower sides of the end of the mounting plate away from the mesh frame, and both ends of the mounting plate are provided with mounting grooves matching the slide rails.

[0009] Furthermore, the distance between the side of the mounting plate close to the screen frame and the blocking strip is not less than the wall thickness of the box body.

[0010] Furthermore, the mounting plate has two symmetrically arranged T-shaped slots on one side close to the mesh frame, and the bottom surfaces of the two T-shaped slots are both through-set, and the mesh frame has two T-shaped mounting blocks fixedly connected to one side close to the two T-shaped slots, and the two T-shaped mounting blocks are respectively slidably connected to the two T-shaped slots.

[0011] Furthermore, the bottom surface of the mounting plate near one end of the net frame is provided with two symmetrically arranged telescopic holes, the inner walls of the two telescopic holes are slidably connected with blocks, one end of the two blocks located in the telescopic holes is connected with a plurality of telescopic springs, the other ends of the plurality of telescopic springs are respectively fixedly connected to the inner walls of adjacent telescopic holes, the two sides of the two blocks away from one end of the telescopic springs are arc-shaped, and the arc-shaped surfaces are slidably connected to the inner wall of the net changing port.

[0012] Furthermore, both sides of the inner wall of the telescopic hole are provided with limiting grooves, and limiting plates are slidably connected in the two limiting grooves. The upper and lower sides of the limiting plates are respectively fixedly connected to the same group of blocks and a plurality of telescopic springs.

[0013] Furthermore, the frame extraction assembly comprises a connecting rod and a hand pull rod, one end of the connecting rod is connected to a side of the screen frame away from the box body, and the other end is fixedly connected to the hand pull rod.

[0014] Furthermore, the end of the connecting rod away from the hand rod is rotatably connected to the screen frame, and the outer wall of the connecting rod away from the hand rod is fixedly connected with a locking rod, and a side of the box body close to the screen changing port is fixedly connected with a plurality of L-shaped locking rods, and the plurality of L-shaped locking rods are respectively located above the plurality of screen changing ports, and the plurality of locking rods are respectively slidably connected with the inner walls of adjacent L-shaped locking rods.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] This type of HEPA industrial filter, by setting up multiple groups of HEPA filters, allows the industrial waste gas to be effectively filtered through another HEPA filter when one group of HEPA filters is replaced, and there is no need to stop the filtering system, thereby further improving the filtering efficiency of the industrial waste gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall appearance connection structure of the utility model;

[0018] Figure 2 This is a schematic cross-sectional view of the box structure of the utility model;

[0019] Figure 3 Based on Figure 2 A schematic diagram of another connection structure;

[0020] Figure 4 Based on Figure 3 Schematic diagram of the connection structure from another angle;

[0021] Figure 5 Based on Figure 3 Schematic diagram of the connection structure from another angle;

[0022] Figure 6 Based on Figure 5 Exploded schematic diagram of part of the connection structure;

[0023] Figure 7 Based on Figure 6 A cross-sectional schematic diagram of a part of the connection structure;

[0024] Figure 8 for Figure 1 A magnified schematic diagram of the connection structure at center A;

[0025] Fig. 9 for Figure 7 Enlarged schematic diagram of the connection structure at point B in the middle.

[0026] In the figure: 1. box body; 2. air inlet pipe; 3. air outlet pipe; 4. mesh frame; 5. HEPA filter; 6. slide rail; 7. mounting plate; 8. sealing strip; 9. T-shaped mounting block; 10. stopper; 11. telescopic spring; 12. limit plate; 13. connecting rod; 14. hand pull rod; 15. locking rod; 16. L-shaped locking rod; 101. mesh changing port; 401. guide groove; 701. mounting groove; 702. T-shaped slide groove; 703. telescopic hole; 704. limit groove. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] See also Figure 1 - Fig. 9 A HEPA industrial filter comprises a box body 1, wherein the upper and lower ends of the box body 1 are respectively fixedly connected and communicated with an air inlet pipe 2 and an air outlet pipe 3, a plurality of net changing ports 101 are penetrated through one side of the box body 1, a net frame 4 is provided in each of the net changing ports 101, a HEPA filter 5 is fixedly connected in each of the net frames 4, a mounting assembly is connected to one end of each of the net frames 4 close to the box body 1, a frame drawing assembly is connected to one end of each of the net frames 4 away from the box body 1, guide grooves 401 are provided on both sides of each of the net frames 4, slide rails 6 are slidably connected in each of the guide grooves 401, and the slide rails 6 are fixedly connected to the inner wall of the box body 1.

[0029] like Figure 1 - Fig. 9 As shown, a HEPA industrial filter in the utility model is similar to the existing HEPA industrial filter structure, such as an industrial waste gas purification device disclosed in the patent with publication number CN218280998U. The main improvement of the utility model is that the user can maintain the filtering operation of the industrial waste gas when replacing the HEPA filter 5, thereby improving the waste gas filtering efficiency. Figures 1 to 5 As shown, when the HEPA industrial filter in the utility model is in use, HEPA filters 5 are installed in multiple network changing ports 101. When the filtering effect of individual HEPA filters 5 decreases, the network frame 4 equipped with the HEPA filter 5 can be pulled out of the box body 1 through the network changing port 101 through the frame extraction component to the outside of the box body 1, and the network changing port 101 is blocked by the installation component, so that the network changing port 101 remains in a closed state to avoid leakage of exhaust gas. At the same time, the exhaust gas in the box body 1 is filtered through the remaining HEPA filters 5, thereby ensuring that during the replacement of the HEPA filter 5, the normal filtration of the exhaust gas in the box body 1 can still be maintained, thereby improving the filtration efficiency of industrial exhaust gas.

[0030] like Figure 1 - Figure 4As shown, the installation assembly includes a mounting plate 7 and two blocking strips 8, one side of the mounting plate 7 is connected to the side of the screen frame 4 located in the box body 1, and the side of the mounting plate 7 away from the screen frame 4 is against the inner wall of the box body 1, and the two blocking strips 8 are respectively fixedly connected to the upper and lower sides of the end of the mounting plate 7 away from the screen frame 4, and both ends of the mounting plate 7 are provided with mounting grooves 701 matching the slide rail 6. When the screen frame 4 is pulled out of the box body 1, the mounting plate 7 is pulled outward, and the upper and lower blocking strips 8 are against the inner wall of the box body 1, so that when the screen frame 4 and the HEPA filter 5 are replaced, the network replacement port 101 can be blocked by the mounting plate 7 and the blocking strips 8, thereby preventing the exhaust gas inside the box body 1 from leaking through the network replacement port 101.

[0031] like Figure 1 - Figure 4 As shown, the distance between the side of the mounting plate 7 close to the screen frame 4 and the blocking strip 8 is not less than the wall thickness of the box body 1. The mounting plate 7 has a certain width, so that when the screen frame 4 is removed, the blocking strip 8 is against the inner wall of the box body 1, and the connection position between the screen frame 4 and the mounting plate 7 is located outside the box body 1, which facilitates the smooth operation of changing the screen.

[0032] like Figure 5 - Figure 7 As shown, the mounting plate 7 is provided with two symmetrically arranged T-shaped slots 702 on one side close to the screen frame 4, and the bottom surfaces of the two T-shaped slots 702 are both through-set, and the screen frame 4 is fixedly connected with two T-shaped mounting blocks 9 on one side close to the two T-shaped slots 702, and the two T-shaped mounting blocks 9 are respectively slidably connected with the two T-shaped slots 702. Through the connection between the T-shaped mounting blocks 9 and the T-shaped slots 702, the screen frame 4 can be more conveniently disassembled and replaced from the mounting plate 7.

[0033] like Figure 1 - Fig. 9As shown, the bottom surface of the mounting plate 7 close to one end of the screen frame 4 is provided with two symmetrically arranged telescopic holes 703, the inner walls of the two telescopic holes 703 are slidably connected with blocks 10, one end of the two blocks 10 located in the telescopic holes 703 is connected with a plurality of telescopic springs 11, the other ends of the plurality of telescopic springs 11 are respectively fixedly connected to the inner walls of adjacent telescopic holes 703, the two sides of the two blocks 10 away from one end of the telescopic springs 11 are arc-shaped, and the arc-shaped surface is slidably connected to the inner wall of the screen changing port 101. When the net frame 4 is pulled toward the outside of the box body 1, the curved surface of the block 10 contacts the inner side of the net changing port 101, and the block 10 is squeezed into the telescopic hole 703 through the curved surface design, and then the mounting plate 7 is pulled outward until the sealing strip 8 abuts against the inner side of the box body 1. At this time, the block 10 extends outward through the action of the telescopic spring 11 and abuts against the outer side of the net changing port 101, so that after the net frame 4 is removed from the mounting plate 7, the mounting plate 7 will not be easily retracted into the net changing port 101, ensuring that the mounting plate 7 and the sealing strip 8 can block the net changing port 101 to prevent exhaust gas leakage. After the net frame 4 and the HEPA filter 5 are replaced, the net frame 4 is pushed inward to drive the mounting plate 7 to move into the box body 1, and the curved surface of the block 10 is squeezed against the outer side of the net changing port 101, so that the replaced HEPA filter 5 is smoothly installed back into the box body 1.

[0034] like Fig. 9 As shown, both sides of the inner wall of the telescopic hole 703 are provided with limiting grooves 704, and limiting plates 12 are slidably connected in the two limiting grooves 704. The upper and lower sides of the limiting plates 12 are respectively fixedly connected to the same group of stoppers 10 and a plurality of telescopic springs 11. When the telescopic spring 11 drives the stopper 10 to move, the stopper 10 can be prevented from being separated from the telescopic hole 703 by the action of the limiting plates 12. At the same time, the movable range of the limiting plates 12 can ensure that the arc surface of the stopper 10 can be in contact and extrusion with the network changing port 101.

[0035] like Figure 1 - Figure 8 As shown, the frame extraction assembly includes a connecting rod 13 and a hand pull rod 14, one end of the connecting rod 13 is connected to the side of the screen frame 4 away from the box body 1, and the other end is fixedly connected to the hand pull rod 14. Pulling the hand pull rod 14, the screen frame 4 is pulled toward the outside of the box body 1 through the connecting rod 13, so that the screen frame 4 is taken out for replacement.

[0036] like Figure 1 - Figure 8As shown, the end of the connecting rod 13 away from the hand-pulled rod 14 is rotatably connected to the screen frame 4, and the outer wall of the end of the connecting rod 13 away from the hand-pulled rod 14 is fixedly connected with a locking rod 15, and a side of the box body 1 close to the net-changing port 101 is fixedly connected with a plurality of L-shaped locking rods 16, and the plurality of L-shaped locking rods 16 are respectively located above the plurality of net-changing ports 101, and the plurality of locking rods 15 are respectively slidably connected with the inner walls of adjacent L-shaped locking rods 16. When the screen frame 4 is installed in the box body 1, the hand-pulled rod 14 is rotated, and the locking rod 15 is driven to rotate into the L-shaped locking rod 16 through the connecting rod 13, thereby preventing the screen frame 4 from sliding from the inside of the box body 1 to the outside, and further improving the connection stability of the screen frame 4 inside the box body 1.

[0037] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A HEPA industrial filter, comprising a housing (1), characterized in that: The upper and lower ends of the box body (1) are respectively fixedly connected and communicated with an air inlet pipe (2) and an air outlet pipe (3); a plurality of net changing ports (101) are provided through one side of the box body (1); a net frame (4) is provided in each of the net changing ports (101); a HEPA filter (5) is fixedly connected in each of the net frames (4); a mounting assembly is connected to one end of each of the net frames (4) close to the box body (1); a frame extraction assembly is connected to one end of each of the net frames (4) away from the box body (1); guide grooves (401) are provided on both sides of each of the net frames (4); a slide rail (6) is slidably connected in each of the guide grooves (401); and the slide rails (6) are fixedly connected to the inner wall of the box body (1).

2. A HEPA industrial filter according to claim 1, characterized in that: The mounting assembly comprises a mounting plate (7) and two blocking strips (8); one side of the mounting plate (7) is connected to a side of the screen frame (4) located inside the box body (1); a side of the mounting plate (7) away from the screen frame (4) abuts against an inner wall of the box body (1); the two blocking strips (8) are respectively fixedly connected to upper and lower sides of an end of the mounting plate (7) away from the screen frame (4); and both ends of the mounting plate (7) are provided with mounting grooves (701) matching the slide rails (6).

3. A HEPA industrial filter according to claim 2, characterized in that: The distance between the side of the mounting plate (7) close to the screen frame (4) and the blocking strip (8) is not less than the wall thickness of the box body (1).

4. A HEPA industrial filter according to claim 2 or 3, characterized in that: The mounting plate (7) is provided with two symmetrically arranged T-shaped slide grooves (702) on one side close to the screen frame (4), and the bottom surfaces of the two T-shaped slide grooves (702) are both through-set, and the screen frame (4) is fixedly connected with two T-shaped mounting blocks (9) on one side close to the two T-shaped slide grooves (702), and the two T-shaped mounting blocks (9) are respectively slidably connected with the two T-shaped slide grooves (702).

5. A HEPA industrial filter according to claim 2 or 3, characterized in that: The bottom surface of the mounting plate (7) close to one end of the screen frame (4) is provided with two symmetrically arranged telescopic holes (703); the inner walls of the two telescopic holes (703) are both slidably connected with a stopper (10); one end of the two stoppers (10) located in the telescopic holes (703) is connected with a plurality of telescopic springs (11); the other ends of the plurality of telescopic springs (11) are respectively fixedly connected to the inner walls of adjacent telescopic holes (703); the two sides of the two stoppers (10) away from one end of the telescopic springs (11) are arc-shaped, and the arc-shaped surfaces are slidably connected to the inner wall of the screen changing port (101).

6. A HEPA industrial filter according to claim 5, characterized in that: Limiting grooves (704) are provided on both sides of the inner wall of the telescopic hole (703), and limiting plates (12) are slidably connected in the two limiting grooves (704). The upper and lower sides of the limiting plates (12) are respectively fixedly connected to the same group of stoppers (10) and a plurality of telescopic springs (11).

7. A HEPA industrial filter according to claim 1, 2, 3 or 6, characterized in that: The frame extraction assembly comprises a connecting rod (13) and a hand pull rod (14); one end of the connecting rod (13) is connected to a side of the screen frame (4) away from the box body (1), and the other end is fixedly connected to the hand pull rod (14).

8. A HEPA industrial filter according to claim 7, characterized in that: The end of the connecting rod (13) away from the hand-pulled rod (14) is rotatably connected to the screen frame (4), and the outer wall of the end of the connecting rod (13) away from the hand-pulled rod (14) is fixedly connected to a locking rod (15), and a side of the box body (1) close to the screen changing port (101) is fixedly connected to a plurality of L-shaped locking rods (16), the plurality of L-shaped locking rods (16) are respectively located above the plurality of screen changing ports (101), and the plurality of locking rods (15) are respectively slidably connected to the inner walls of adjacent L-shaped locking rods (16).

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