Detachable air filter and filter element

Abstract

The utility model discloses a detachable air filter and a filter element, and relates to the technical field of air filters. The detachable air filter and the filter element comprise a filter shell, a mounting groove is formed in the filter shell, a positioning frame is fixedly connected to the interior of the mounting groove, and a first filter element is slidably connected to the interior of the mounting groove. Through the arrangement of the air inlet hole and the air outlet hole, when the second filter element is used for a long time and the filtering effect becomes poor, due to the fact that the rotating plate can be opened by air pressure, air can enter through the air inlet hole and then flow out, at the moment, part of air can be directly filtered through the first filter element, and the load of each filter screen can be shared by adopting a double-filtering system; the working pressure of a single filter screen is reduced, compared with a traditional filter with a double-filter-element structure, the filter efficiency is higher, each filter screen can be fully utilized and share the working load due to the channel design, and compared with a traditional structure, the whole filter is more durable and more economical.

Description

Technical Field

[0001] The utility model relates to the technical field of air filters, in particular to a detachable air filter and a filter element. Background Art

[0002] An air filter is a device used to filter impurities, pollutants and particles in the air to improve the quality of the air and keep the indoor environment clean. It is usually used in homes, offices, industrial sites and vehicles, etc. It helps to purify the air and reduce the content of dust, pollen, bacteria, viruses and other harmful substances in the air. The filter element of an air filter refers to a component used to capture and filter particulate matter, pollutants and other harmful substances in the air. The filter element is usually made of specific filter materials, such as fiber cloth, activated carbon, HEPA (high-efficiency particulate air) filter material, etc. These materials can effectively capture particles and pollutants in the air, thereby improving the quality of the air.

[0003] After searching, the patent number is CN219186279U, which discloses an air filter, including: a support frame, a filter element embedded in the support frame and supported by the support frame, and detachably connected to the support frame; the filter element includes a frame, and a pleated filter medium fixed in the frame and fixedly connected to the frame, and the pleated filter medium contains a plurality of pleats.

[0004] The air filter in this comparative document and the traditional filter, when in use, allow air directly into the device and then filter it through the filter element. Some filters will add multiple filter elements to filter the air in order to improve the filtering effect. Although the increase in filter elements can enhance the quality of air filtration, when a large amount of dust and dirt accumulates on the surface of the first filter element, the speed at which air passes through it will slow down, causing air flow to be blocked, thereby reducing the filtering efficiency of the entire filter. Excessive resistance may also cause wear of the fan or blower, reducing its service life. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a detachable air filter and filter element, which solves the problem that when a large amount of dust and dirt accumulates on the surface of the first filter element during use, the speed at which air passes through the first filter element slows down, causing air flow to be obstructed, thereby reducing the filtering efficiency of the entire filter.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a detachable air filter and a filter element, comprising a filter housing, the interior of the filter housing is provided with a mounting groove, the interior of the mounting groove is fixedly connected with a positioning frame, the interior of the mounting groove is slidably connected with a first filter element, the interior of the filter housing is sealingly and slidably connected with a first limit frame, the surface of the first limit frame away from the second sealing strip is affixed with the second filter element, the outer surface of the filter housing is fixedly installed with a fixing frame, the surface of the fixing frame close to the third sealing strip is fixedly connected with a second limit frame, the surface of the second limit frame is provided with an air inlet groove, the surface of the first limit frame is provided with an air outlet groove, the interior of the filter housing is provided with an air inlet hole and an air outlet hole, the air inlet hole is connected to the interior of the air outlet hole, the interior of the inlet hole is rotatably connected with a rotating plate, the interior of the inlet hole is fixedly connected with a baffle, and the surface of the rotating plate is fixedly connected with an elastic band.

[0007] Preferably, a first sealing strip is fixedly connected to a surface of the positioning frame close to the first filter element, a second sealing strip is attached to a surface of the first filter element away from the positioning frame, and a third sealing strip is attached to a surface of the second filter element away from the first limiting frame.

[0008] Preferably, the first filter element is sealed to the positioning frame via a first sealing strip, the first limiting frame is sealed to the first filter element via a second sealing strip, and the second limiting frame is sealed against the surface of the second filter element via a third sealing strip.

[0009] Preferably, the air outlet groove coincides with the air outlet hole, and the air inlet groove coincides with the air inlet hole.

[0010] Preferably, a sealing ring is fixedly installed on the outer surface of the air outlet groove, and the air outlet groove is sealed and connected to the inner wall of the installation groove through the sealing ring.

[0011] Preferably, one end of the elastic band away from the rotating plate is fixedly connected to the surface of the baffle, and a silicone strip is fixedly connected to the surface of the rotating plate.

[0012] Preferably, under normal conditions, the rotating plate is sealed and fitted to the surface of the air inlet through the silicone strip by the pulling force of the elastic band.

[0013] Beneficial Effects

[0014] The utility model provides a detachable air filter and filter element. Compared with the prior art, it has the following beneficial effects:

[0015] 1. The detachable air filter and filter element are provided with air inlet and air outlet. When the filtering effect of the second filter element deteriorates after being used for a long time, the rotating plate can be opened due to air pressure, and air can enter through the air inlet and then flow out. At this time, part of the air will be directly filtered through the first filter element. The use of a double filtering system can share the load of each filter, reduce the working pressure of a single filter, and thus extend the service life of the filter.

[0016] 2. Compared with the traditional double-filter structure filter, the detachable air filter and filter element have higher filtration efficiency. The channel design allows each filter to be fully utilized and share the workload. Compared with the traditional structure, the overall filter is more durable and more economical. After setting the channel, due to the easy-to-disassemble structure inside the filter, even if a filter fails or needs to be replaced, the system can still maintain normal operation, which improves the stability and reliability of the system and reduces the downtime and maintenance costs caused by filter failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is an exploded view of the utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the filter housing in the utility model;

[0020] Figure 4 for Figure 3 The enlarged view of point A in the middle;

[0021] Figure 5 It is a structural schematic diagram of the rotating plate in the utility model.

[0022] In the figure: 1. filter housing; 2. mounting groove; 3. positioning frame; 4. first sealing strip; 5. first filter element; 6. second sealing strip; 7. first limiting frame; 8. second filter element; 9. third sealing strip; 10. fixing frame; 11. second limiting frame; 12. air inlet groove; 13. air outlet groove; 14. air inlet hole; 141. air outlet hole; 15. rotating plate; 151. silicone strip; 16. baffle; 17. elastic band. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-5 The utility model provides a technical solution: a detachable air filter and a filter element, comprising a filter housing 1, a mounting groove 2 is provided inside the filter housing 1, a positioning frame 3 is fixedly connected inside the mounting groove 2, a first filter element 5 is slidably connected inside the mounting groove 2, a first sealing strip 4 is fixedly connected to the surface of the positioning frame 3 close to the first filter element 5, the first filter element 5 is sealed and connected to the positioning frame 3 through the first sealing strip 4, a first limiting frame 7 is sealingly and slidably connected inside the filter housing 1, a second sealing strip 6 is attached to the surface of the first filter element 5 away from the positioning frame 3, the first limiting frame 7 is sealed and connected to the first filter element 5 through the second sealing strip 6, a second filter element 8 is attached to the surface of the first limiting frame 7 away from the second sealing strip 6, a fixing frame 10 is fixedly installed on the outer surface of the filter housing 1, a second limiting frame 11 is fixedly connected to the surface of the fixing frame 10 close to the third sealing strip 9, a third sealing strip 9 is attached to the surface of the second filter element 8 away from the first limiting frame 7, and the second limiting frame 11 is sealed and pressed against the second filter element 8 through the third sealing strip 9. The surface of the second limiting frame 11 is provided with an air inlet groove 12, the surface of the first limiting frame 7 is provided with an air outlet groove 13, the outer surface of the air outlet groove 13 is fixedly installed with a sealing ring, the air outlet groove 13 is sealed and connected to the inner wall of the mounting groove 2 through the sealing ring, the interior of the filter housing 1 is provided with an air inlet hole 14 and an air outlet hole 141, the air outlet groove 13 coincides with the air outlet hole 141, the air inlet groove 12 coincides with the air inlet hole 14, the air inlet hole 14 is connected to the inside of the air outlet hole 141, and the inside of the air inlet hole 14 is rotatably connected with a rotary The rotating plate 15 and the air inlet 14 are fixedly connected with a baffle 16 inside, and the surface of the rotating plate 15 is fixedly connected with an elastic band 17. By setting the air inlet 14 and the air outlet 141, when the filtering effect of the second filter element 8 deteriorates after being used for a long time, the rotating plate 15 can be opened due to air pressure, and air can enter through the air inlet 14 and then flow out through 1441. At this time, part of the air will be directly filtered through the first filter element 5. The use of a double filtering system can share the load of each filter screen, thereby extending the service life of the filter;

[0025] One end of the elastic band 17 away from the rotating plate 15 is fixedly connected to the surface of the baffle 16, and a silicone strip 151 is fixedly connected to the surface of the rotating plate 15. By setting the elastic band 17 and the silicone strip 151, under normal circumstances, the rotating plate 15 is sealed and fitted with the surface of the air inlet 14 through the silicone strip 151 due to the pulling force of the elastic band 17. Only when the airflow entering the filter housing 1 is greater than the airflow flowing from the second filter element 8, the rotating plate 15 will be opened, thereby reducing the working pressure of a single filter screen and extending the service life of the filter element.

[0026] During operation, after the filter housing 1 is connected to the ventilation duct and the fan is started, the air passes through the fixing frame 10 and the second limiting frame 11 into the interior of the installation slot 2, and after being filtered by the second filter element 8, it can also be filtered once more by the first filter element 5. As the fan rotates continuously, the airflow into the interior of the installation slot 2 is constant. When the filtering effect of the second filter element 8 deteriorates after being used for too long, the pressure at the position of the second limiting frame 11 inside the installation slot 2 will increase. As the air pressure can open the rotating plate 15, the air can enter through the air inlet 14 and then flow out through the air outlet 141. At this time, part of the air will directly Filtration is then carried out through the first filter element 5. The use of a double filtration system can share the load of each filter and reduce the working pressure of a single filter, thereby extending the service life of the filter. Compared with the traditional double-filter structure filter, the filtration efficiency is higher, and the channel design allows each filter to be fully utilized to share the workload. Compared with the traditional structure, the overall filter is more durable and more economical. After setting the channel, even if a filter fails or needs to be replaced, the system can still maintain normal operation, which improves the stability and reliability of the system and reduces the downtime and maintenance costs caused by filter failure.

[0027] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A detachable air filter and filter element, comprising a filter housing (1), characterized in that: The filter housing (1) is provided with an installation groove (2) inside, a positioning frame (3) is fixedly connected inside the installation groove (2), a first filter element (5) is slidably connected inside the installation groove (2), a first limiting frame (7) is sealingly slidably connected inside the filter housing (1), a surface of the first limiting frame (7) away from the second sealing strip (6) is affixed with the second filter element (8), a fixing frame (10) is fixedly installed on the outer surface of the filter housing (1), and a surface of the fixing frame (10) close to the third sealing strip (9) is fixedly connected to the second filter element (8), and a second filter element (8) is fixedly connected to the second filter element (8) on the surface of the first limiting frame (7) away from the second sealing strip (6). A limiting frame (11), an air inlet groove (12) is provided on the surface of the second limiting frame (11), an air outlet groove (13) is provided on the surface of the first limiting frame (7), an air inlet hole (14) and an air outlet hole (141) are provided inside the filter housing (1), the air inlet hole (14) is connected to the inside of the air outlet hole (141), a rotating plate (15) is rotatably connected to the inside of the air inlet hole (14), a baffle (16) is fixedly connected to the inside of the air inlet hole (14), and an elastic band (17) is fixedly connected to the surface of the rotating plate (15).

2. A detachable air filter and filter element according to claim 1, characterized in that: A first sealing strip (4) is fixedly connected to the surface of the positioning frame (3) close to the first filter element (5), a second sealing strip (6) is adhered to the surface of the first filter element (5) away from the positioning frame (3), and a third sealing strip (9) is adhered to the surface of the second filter element (8) away from the first limiting frame (7).

3. A detachable air filter and filter element according to claim 2, characterized in that: The first filter element (5) is sealed to the positioning frame (3) via a first sealing strip (4), the first limiting frame (7) is sealed to the first filter element (5) via a second sealing strip (6), and the second limiting frame (11) is sealed against the surface of the second filter element (8) via a third sealing strip (9).

4. A detachable air filter and filter element according to claim 1, characterized in that: The air outlet groove (13) overlaps with the air outlet hole (141), and the air inlet groove (12) overlaps with the air inlet hole (14).

5. A detachable air filter and filter element according to claim 1, characterized in that: A sealing ring is fixedly mounted on the outer surface of the air outlet groove (13), and the air outlet groove (13) is sealingly connected to the inner wall of the installation groove (2) via the sealing ring.

6. A detachable air filter and filter element according to claim 1, characterized in that: One end of the elastic band (17) away from the rotating plate (15) is fixedly connected to the surface of the baffle (16), and a silicone strip (151) is fixedly connected to the surface of the rotating plate (15).

7. A detachable air filter and filter element according to claim 6, characterized in that: Under normal conditions, the rotating plate (15) is sealed and fitted with the surface of the air inlet (14) through the silicone strip (151) by the pulling force of the elastic band (17).

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