Air filter with self-sealing device

Abstract

The utility model discloses an air filter with a self-sealing device, which relates to the technical field of air filters and aims to solve the problem that an air outlet passage is easy to pollute when a filter element of the existing air filter is replaced, the air filter comprises a shell, the bottom of the shell is detachably connected with a sealing cover, and the sealing cover limits a filter cartridge in the shell; according to the air filter, when the air filter works, the self-sealing bolt is jacked upwards by the jacking seat on the jacking rod, so that the self-sealing bolt overcomes the elastic force of the self-sealing spring to rise, the sealing disc is separated from the sealing ring, the air outlet pipe is opened at the moment, and air is smoothly discharged out of the shell after being filtered; when a filter cylinder in the filter is replaced, the ejector rod does not apply force any more, the self-sealing spring automatically pushes the self-sealing bolt to move downwards, it is ensured that the sealing ring is tightly matched with the sealing disc, the air outlet pipe is closed, dust in air is prevented from entering the air outlet pipe, and therefore the clean effect of the air outlet pipe of the air filter is continuously kept, and the filtering effect of the air filter is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of air filters, in particular to an air filter with a self-sealing device. Background Art

[0002] An air filter is a device used to remove pollutants such as dust, particulate matter, bacteria, viruses, etc. from the air. It plays an important role in various application scenarios such as air purification, air conditioning systems, industrial ventilation, and clean rooms. The air filter consists of an external shell and an internal filter element to filter out dust in the air when the air passes through the air filter, thereby improving air cleanliness.

[0003] During the use of the air filter, the filter element needs to be replaced regularly to maintain the air filtration function at the desired level. When replacing the filter element, a large amount of dust remaining on the outside of the filter element will fall into the inside of the air filter housing, causing pollution to the air outlet of the air filter and affecting the air filtration effect.

[0004] Therefore, the present application provides an air filter with a self-sealing device to meet the needs. Utility Model Content

[0005] The purpose of this application is to provide an air filter with a self-sealing device, which can seal the air outlet of the air filter when replacing the filter element, thereby reducing the impact of external pollution on the air filtration effect.

[0006] To achieve the above objectives, the present application provides the following technical solution: an air filter with a self-sealing device, comprising:

[0007] The housing is a cylindrical shell with a transparent bottom, an air inlet pipe is provided on the side wall of the housing, an air outlet pipe is provided on the top of the housing, and a cover is detachably connected to the bottom of the housing, and the cover confines the filter cartridge in the housing;

[0008] The air outlet pipe is provided with a sealing ring and a bracket, the sealing ring is located above the bracket, the bracket is provided with a guide sleeve, a self-sealing plug is vertically slidably connected in the guide sleeve, a self-sealing spring is pressed between the bottom of the self-sealing plug and the guide sleeve, a sealing disk is provided on the top of the self-sealing plug, and the top of the self-sealing plug passes through the sealing ring, the sealing disk is located above the sealing ring, and the sealing disk and the sealing ring cooperate to close the air outlet pipe;

[0009] The cover is provided with a push rod, and the top of the push rod is provided with a top seat, which is matched with the bottom of the self-sealing plug. The push rod can push the self-sealing plug upwards.

[0010] Preferably, a top sealing ring is provided on the inner top surface of the shell, and a bottom sealing ring is provided on the sealing cover, and both the top sealing ring and the bottom sealing ring are adapted to the filter cartridge.

[0011] Preferably, a docking sleeve is provided on the inner top surface of the shell, the docking sleeve is communicated with the air outlet pipe, and the docking sleeve is used to plug the filter cartridge.

[0012] Preferably, an inner ring is provided on the edge of the sealing cover, and the inner ring is adapted to the bottom inner wall of the outer shell.

[0013] Preferably, the outer edge of the bottom of the shell is evenly provided with blocks, the outer edge of the cover is evenly provided with a card seat, the card seat is provided with a card slot, the card slot is adapted to the card block, and the card slot can be clamped on the card block by assembling and rotating the cover.

[0014] Preferably, a screw hole seat is provided at the end of one group of the clamping blocks, and a limit seat is provided at the end of one group of the clamping seats, the limit seat is adapted to the screw hole seat, and a limit bolt is installed and connected between the limit seat and the screw hole seat to limit the cover.

[0015] Preferably, support plates are evenly provided on the outer wall of the push rod, the bottom of the support plate is connected to the cover, and the top of the support plate is chamfered.

[0016] Preferably, a handle is provided in the middle of the bottom surface of the cover.

[0017] Preferably, the handle is in the shape of an elongated strip, and reinforcing ribs are symmetrically provided on both sides of the middle portion of the handle.

[0018] In summary, the technical effects and advantages of the utility model are:

[0019] The utility model provides a self-sealing device in the air filter, which can effectively prevent external dust from contaminating the exhaust pipe when replacing the filter element, thereby avoiding pollution of the exhaust duct and maintaining the air filtration effect. Specifically, when the air filter is working, the top seat on the push rod pushes the self-sealing plug upward, so that the self-sealing plug overcomes the elastic force of the self-sealing spring and rises, thereby causing the sealing disk to separate from the sealing ring. At this time, the exhaust pipe is opened, and the filtered air is smoothly discharged from the shell; when replacing the filter cartridge inside the filter, the push rod no longer applies force, and the self-sealing spring automatically pushes the self-sealing plug downward, ensuring that the sealing ring and the sealing disk are closely matched, closing the exhaust pipe and preventing dust in the air from invading the exhaust pipe, thereby continuously maintaining the cleanliness of the air filter outlet pipe and ensuring the filtering effect of the air filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is one of the overall structural diagrams of the utility model;

[0022] Figure 2 This is the second schematic diagram of the overall structure of the utility model;

[0023] Figure 3 This is a left-side structural schematic diagram of the present utility model;

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

[0025] Figure 5 This is an enlarged structural diagram of point B of the utility model;

[0026] Figure 6 This is a schematic diagram of the shell structure of the utility model;

[0027] Figure 7 This is a schematic diagram of the sealing structure of the utility model.

[0028] In the figure: 1. Outer shell; 2. Sealing cover; 3. Filter cartridge; 4. Self-sealing plug; 5. Self-sealing spring; 10. Inlet pipe; 11. Outlet pipe; 12. Docking tube; 13. Sealing ring; 14. Guide sleeve; 15. Block; 16. Screw hole seat; 17. Top sealing ring; 20. Inner ring; 21. Push rod; 22. Top seat; 23. Support plate; 24. Bottom sealing ring; 25. Block; 26. Limit seat; 27. Handle; 28. Reinforcement rib; 40. Sealing disk. DETAILED DESCRIPTION

[0029] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0030] Example: Reference Figure 1-7The air filter with a self-sealing device shown in the figure includes a housing 1, which is a cylindrical shell with a transparent bottom. An air inlet pipe 10 is provided on the side wall of the housing 1, and an air outlet pipe 11 is provided on the top of the housing 1. A cover 2 is detachably connected to the bottom of the housing 1, and the cover 2 confines the filter cartridge 3 in the housing 1.

[0031] A sealing ring 13 and a bracket are provided in the air outlet pipe 11. The sealing ring 13 is located above the bracket. A guide sleeve 14 is provided on the bracket. A self-sealing plug 4 is vertically slidably connected in the guide sleeve 14. A self-sealing spring 5 is pressed between the bottom of the self-sealing plug 4 and the guide sleeve 14. A sealing disk 40 is provided on the top of the self-sealing plug 4, and the top of the self-sealing plug 4 passes through the sealing ring 13. The sealing disk 40 is located above the sealing ring 13. The sealing disk 40 cooperates with the sealing ring 13 to close the air outlet pipe 11.

[0032] The cover 2 is provided with a push rod 21 , and a top seat 22 is provided on the top of the push rod 21 . The top seat 22 is adapted to the bottom of the self-sealing plug 4 , and the push rod 21 can push the self-sealing plug 4 upward.

[0033] As an implementation method in this embodiment, in order to enhance the filtering effect of the filter cartridge 3 and improve the sealing performance, Figure 4 、 Figure 6 、 Figure 7 As shown, a top sealing ring 17 is provided on the inner top surface of the housing 1 , and a bottom sealing ring 24 is provided on the cover 2 . Both the top sealing ring 17 and the bottom sealing ring 24 are adapted to the filter cartridge 3 .

[0034] As an implementation method in this embodiment, in order to facilitate the basic positioning of the filter cartridge 3 during installation, as shown in FIG. Figure 5 、 Figure 6 As shown, a docking sleeve 12 is provided on the inner top surface of the housing 1 , and the docking sleeve 12 is connected to the air outlet pipe 11 , and is used for plugging the filter cartridge 3 .

[0035] As an implementation method in this embodiment, in order to enhance the sealing between the cover 2 and the housing 1, as shown in FIG. Figure 4 、 Figure 7 As shown, an inner ring 20 is provided on the edge of the cover 2 , and the inner ring 20 is matched with the bottom inner wall of the shell 1 .

[0036] As an implementation method in this embodiment, in order to facilitate the installation of the cover 2 at the bottom of the housing 1, as shown in FIG. Figure 3 、 Figure 4 、 Figure 6 、 Figure 7 As shown, the outer edge of the bottom of the shell 1 is evenly provided with a card block 15, the outer edge of the cover 2 is evenly provided with a card seat 25, and the card seat 25 is provided with a card slot, which is adapted to the card block 15.

[0037] As an implementation method in this embodiment, in order to facilitate the positioning of the installed cover 2, as shown in FIG. Figure 2 、 Figure 6 、 Figure 7 As shown, a screw hole seat 16 is provided at the end of one group of clamping blocks 15, and a limit seat 26 is provided at the end of one group of clamping seats 25. The limit seat 26 is adapted to the screw hole seat 16, and a limit bolt is installed and connected between the limit seat 26 and the screw hole seat 16.

[0038] As an implementation method in this embodiment, in order to enhance the stability of the top rod 21, as shown in FIG. Figure 4 、 Figure 7 As shown, support plates 23 are evenly provided on the outer wall of the push rod 21 , the bottom of the support plate 23 is connected to the cover 2 , and the top of the support plate 23 is chamfered.

[0039] As an implementation method in this embodiment, in order to improve the convenience of installing and removing the cover 2, as shown in FIG. Figures 2 to 4 As shown, a handle 27 is provided in the middle of the bottom surface of the cover 2.

[0040] As an implementation method in this embodiment, in order to enhance the structural strength of the cover 2, as shown in FIG. Figures 2 to 4 As shown, the handle 27 is in the shape of an elongated strip, and reinforcing ribs 28 are symmetrically provided on both sides of the middle portion of the handle 27 .

[0041] Working principle of this utility model: when the air filter is working normally, the card seat 25 is stuck on the card block 15, the limit seat 26 is aligned with the screw hole seat 16, the limit bolt passes through the limit seat 26 and is installed on the screw hole seat 16, so that the cover 2 is limited to the shell 1, the card block 15 cooperates with the card seat 25, so that the cover 2 seals the bottom of the shell 1, and the air enters the shell 1 from the air inlet pipe 10, and enters the inner periphery of the filter cartridge 3 after being filtered by the filter cartridge 3. At this time, the top sealing ring 17 and the bottom sealing ring 24 seal the two ends of the filter cartridge 3, and the shell The bottom of 1 is sleeved on the inner ring 20 to enhance the sealing to ensure the filtering effect. The top seat 22 on the top of the top rod 21 contacts the bottom of the self-sealing plug 4 and pushes the self-sealing plug 4 upward. The guide sleeve 14 on the bracket guides the self-sealing plug 4 vertically. An air flow channel is left between the sealing disk 40 and the sealing ring 13, and the filtered air is discharged from the outlet pipe 11. When replacing the filter cartridge 3, first remove the limit nut, release the limit of the cover 2 and the shell 1, rotate the cover 2, and disengage the block 15 from the seat 25. Then use the handle 27 to remove the cover 2. When the cover 2 is removed, the push rod 21 is separated from the self-sealing plug 4. Under the action of the self-sealing spring 5, the self-sealing plug 4 is pushed downward, so that the sealing disk 40 is buckled on the sealing ring 13, and the air outlet pipe 11 is closed. Then the filter cartridge 3 is taken out from the housing 1. At this time, the air outlet pipe 11 is closed, and impurities dropped when replacing the filter cartridge 3 cannot enter it. Replace the new filter cartridge 3. When installing the filter cartridge 3, first plug the filter cartridge 3 into the docking sleeve 12 to preliminarily position the filter cartridge 3, and then The cover 2 is buckled onto the bottom of the outer shell 1. When buckling, first insert the push rod 21 into the inner periphery of the filter cartridge 3. As the cover 2 is aligned with the outer shell 1 and buckled, the top seat 22 will lift the sealing bolt 4, separating the sealing disk 40 from the sealing ring 13, and the air flow channel is opened. Then, the cover 2 is rotated to limit the seat 25 and the block 15. The limiting bolt is used to limit and fix the limiting seat 26 and the screw hole seat 16 to complete the replacement of the filter cartridge 3. The reinforcing rib 28 can enhance the structural strength of the cover 2, making the installation of the filter cartridge 3 more stable and reliable.

[0042] The mechanical connection involved in the present invention is a common means used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments, which belongs to common knowledge.

[0043] Components not described in detail herein are prior art.

[0044] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An air filter with a self-sealing device, characterized in that: include: A housing (1), the housing (1) is a cylindrical shell with a transparent bottom, an air inlet pipe (10) is provided on the side wall of the housing (1), an air outlet pipe (11) is provided on the top of the housing (1), and a cover (2) is detachably connected to the bottom of the housing (1), and the cover (2) confines the filter cartridge (3) in the housing (1); The air outlet pipe (11) is provided with a sealing ring (13) and a bracket, the sealing ring (13) is located above the bracket, the bracket is provided with a guide sleeve (14), a self-sealing plug (4) is vertically slidably connected in the guide sleeve (14), a self-sealing spring (5) is pressed between the bottom of the self-sealing plug (4) and the guide sleeve (14), a sealing disk (40) is provided on the top of the self-sealing plug (4), and the top of the self-sealing plug (4) passes through the sealing ring (13), the sealing disk (40) is located above the sealing ring (13), and the sealing disk (40) cooperates with the sealing ring (13) to seal the air outlet pipe (11); The cover (2) is provided with a push rod (21), and a top seat (22) is provided on the top of the push rod (21). The top seat (22) is adapted to the bottom of the self-sealing plug (4), and the push rod (21) can push the self-sealing plug (4) upward.

2. An air filter with a self-sealing device according to claim 1, characterized in that: A top sealing ring (17) is provided on the inner top surface of the housing (1), and a bottom sealing ring (24) is provided on the cover (2). Both the top sealing ring (17) and the bottom sealing ring (24) are adapted to the filter cartridge (3).

3. The air filter with a self-sealing device according to claim 1, characterized in that: A docking sleeve (12) is provided on the inner top surface of the outer shell (1), the docking sleeve (12) is connected to the air outlet pipe (11), and the docking sleeve (12) is used to plug the filter cartridge (3).

4. The air filter with a self-sealing device according to claim 1, characterized in that: An inner ring (20) is provided on the edge of the sealing cover (2), and the inner ring (20) is adapted to the bottom inner wall of the outer shell (1).

5. The air filter with a self-sealing device according to claim 1, characterized in that: The outer edge of the bottom of the housing (1) is evenly provided with card blocks (15), the outer edge of the cover (2) is evenly provided with card seats (25), and the card seats (25) are provided with card slots, which are adapted to the card blocks (15).

6. The air filter with a self-sealing device according to claim 5, characterized in that: A screw hole seat (16) is provided at the end of one group of the clamping blocks (15), and a limit seat (26) is provided at the end of one group of the clamping seats (25). The limit seat (26) is adapted to the screw hole seat (16), and a limit bolt is installed and connected between the limit seat (26) and the screw hole seat (16).

7. The air filter with a self-sealing device according to claim 1, characterized in that: Support plates (23) are evenly provided on the outer wall of the push rod (21), the bottom of the support plate (23) is connected to the cover (2), and the top of the support plate (23) is chamfered.

8. The air filter with a self-sealing device according to claim 1, characterized in that: A handle (27) is provided in the middle of the bottom surface of the cover (2).

9. The air filter with a self-sealing device according to claim 8, characterized in that: The handle (27) is in the shape of an elongated strip, and reinforcing ribs (28) are symmetrically provided on both sides of the middle portion of the handle (27).

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