Anti-backflow air filter

Abstract

The utility model belongs to the technical field of air purification, and particularly relates to an anti-backflow air filter which comprises a filter cylinder, the filter cylinder comprises a wave piece, the wave piece is arranged to be tubular, fixing heads are arranged at the two ends of the wave piece, a communicating piece is connected to the fixing head arranged at one end in an inserted mode, and the other end of the communicating piece is connected with a connecting rod. The fixing head arranged at the other end is connected with a sealing piece, the top of the sealing piece is connected with an inner filtering piece, and the inner filtering piece is located in the wavy piece. The anti-backflow air filter comprises an air inlet pipe, a reducer pipe, a duckbilled piece, a wave piece, an inner filter piece and other key assemblies. To-be-purified air firstly enters the reducer pipe through the air inlet pipe; due to the design of the reducer pipe, the air flow direction is more concentrated, so that the filtering efficiency is improved; the duckbilled piece is located at the bottom of the reducer pipe, and the unique design of the duckbilled piece can effectively prevent filtered particles from flowing back and falling off.

Description

Technical Field

[0001] The utility model belongs to the technical field of air purification, and in particular relates to an anti-backflow air filter. Background Art

[0002] Particles in the air such as dust, pollen, smoke and other tiny pollutants not only pose a threat to human health, but also affect the normal operation of various precision equipment. Therefore, efficient air filtration technology becomes particularly important.

[0003] Traditional air filters often have some problems during use. For example, when the filter element needs to be replaced or cleaned, the removed particles are easily dropped back into the air due to gravity or airflow, causing secondary pollution. In addition, traditional air filters are also limited in the amount of particles they can hold, which means they need to be replaced or cleaned frequently, increasing maintenance costs. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of the utility model is to provide an anti-backflow air filter, which can not only effectively filter particulate matter in the air, but also prevent the backflow of particulate matter, thereby reducing maintenance costs and the risk of secondary pollution.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A backflow prevention air filter comprises a filter cartridge, wherein the filter cartridge comprises a wave piece, the wave piece is configured to be tubular, and both ends of the wave piece are provided with fixed heads, a connecting piece is inserted into the fixed head arranged at one end, and a sealing piece is connected to the fixed head arranged at the other end, an inner filter piece is connected to the top of the sealing piece, and the inner filter piece is located inside the wave piece.

[0007] Furthermore, the connecting piece includes an air intake pipe, the air intake pipe is inserted into the fixed head, and a reducing pipe is fixedly connected to the inside of the air intake pipe, and a duckbill is provided at the bottom of the reducing pipe.

[0008] Furthermore, a sealing seat is provided on the top of the fixed head, a first connecting ring is fixedly connected to the outer side of the air inlet pipe, and a first connecting hole is penetrated through the upper end surface of the first connecting ring.

[0009] Furthermore, a sealing ring is provided on the outer side of the air inlet pipe.

[0010] Furthermore, the sealing member comprises a buckle-fitting chamber, the inner bottom of the buckle-fitting chamber is fixedly connected with a sealing disk, and the upper end surface of the sealing disk is fixedly connected with a connecting seat;

[0011] The inner filter element comprises a positioning column, which is mounted on a connecting seat. Umbrella-shaped filter elements are evenly distributed on the positioning column along the length of the positioning column, and filter holes are evenly penetrated through the umbrella-shaped filter elements.

[0012] Furthermore, a second connecting ring is fixedly connected to the outer side of the top of the buckle bin, and a second connecting hole is penetrated through the second connecting ring.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] By adopting tubular wave elements, the present invention can optimize the air flow path and enhance the adsorption efficiency of particles in the air. The wave-shaped design not only helps to capture particles more effectively, but also prevents particles from flowing back, thereby improving air purification performance. This design solves the problems of traditional air filters in particle control and ensures a more efficient air purification effect.

[0015] Ming has set a duckbill at the bottom of the reducer to effectively prevent the filtered particles from falling due to gravity or airflow, thereby significantly reducing the risk of secondary pollution. This design addresses the secondary pollution problem that may be caused by replacing or cleaning the filter element of traditional air filters, and improves the environmental protection effect.

[0016] Through the use of the inner filter element, especially the umbrella-shaped filter element, the present invention not only increases the particle holding capacity, but also improves the filtering accuracy. The filter holes on the umbrella-shaped filter element can filter the tiny particles in the air more accurately, thereby providing a higher quality air purification effect. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 This is a schematic diagram of the structure of the filter cartridge of the utility model;

[0019] Figure 3 The structure of the connecting piece of the utility model is shown in FIG. Figure 1 ;

[0020] Figure 4 The structure of the connecting piece of the utility model is shown in FIG. Figure 2 ;

[0021] Figure 5 This is a schematic diagram of the structure of the sealing member of the utility model;

[0022] Figure 6 It is a structural schematic diagram of the inner filter element of the utility model.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1. Filter cartridge; 11. Wave member; 12. Fixed head; 121. Sealing seat;

[0025] 2. Connecting piece; 21. Air inlet pipe; 211. Sealing ring; 22. First connecting ring; 221. First connecting hole; 23. Reducer; 231. Duckbill piece;

[0026] 3. Sealing member; 31. Buckle compartment; 32. Sealing plate; 33. Connecting seat; 34. Second connecting ring; 341. Second connecting hole;

[0027] 4. Inner filter element; 41. Positioning column; 42. Umbrella filter element; 421. Filter hole. DETAILED DESCRIPTION

[0028] In order to make the purpose and advantages of the utility model more clear, the utility model is specifically described in combination with the following embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the utility model, and does not strictly limit the protection scope of the specific request of the utility model.

[0029] See also Figure 1-6 , an anti-backflow air filter, including a filter cartridge 1, the filter cartridge 1 includes a wave member 11, the wave member 11 is set to a tubular shape, and both ends of the wave member 11 are provided with a fixed head 12, a connecting piece 2 is plugged into the fixed head 12 arranged at one end, and a sealing member 3 is connected to the fixed head 12 arranged at the other end; the top of the sealing member 3 is connected to an inner filter member 4, and the inner filter member 4 is located inside the wave member 11; the structural design of the wave member 11 optimizes the air flow path, enhances the adsorption efficiency of particulate matter in the air, and effectively improves the air purification performance; the wave shape design also helps to prevent the backflow of particulate matter, ensuring that the risk of secondary contamination of particulate matter is reduced when the filter cartridge 1 is disassembled or replaced.

[0030] See also Figure 3-4 The connecting piece 2 includes an air inlet pipe 21, which is inserted into the fixed head 12, and a reducer 23 is fixedly connected to the inside of the air inlet pipe 21, and a duckbill 231 is provided at the bottom of the reducer 23; the unique design of the duckbill 231 enables the air to be purified to effectively enter the wave piece 11 for filtration, while preventing the filtered particles from falling back due to gravity or airflow, thereby significantly reducing the risk of secondary pollution.

[0031] See also Figure 3-4A sealing seat 121 is provided on the top of the fixed head 12, and a first connecting ring 22 is fixedly connected to the outer side of the intake pipe 21. A first connecting hole 221 is penetrated through the upper end surface of the first connecting ring 22. The structural design between the first connecting ring 22 and the fixed head 12 ensures the structural stability and sealing of the entire filter, thereby improving the filtering efficiency and the service life of the equipment.

[0032] See also Figure 3 A sealing ring 211 is sleeved on the outer side of the air inlet pipe 21; the sealing ring 211 further strengthens the sealing between the air inlet pipe 21 and the fixed head 12, prevents unpurified air from leaking from the interface, and ensures the maximization of the filtering effect.

[0033] See also Figure 5-6 The sealing member 3 comprises a snap-fitting bin 31, a sealing disc 32 is fixedly connected to the inner bottom of the snap-fitting bin 31, and a connecting seat 33 is fixedly connected to the upper end surface of the sealing disc 32; the inner filter element 4 comprises a positioning column 41, the positioning column 41 is installed on the connecting seat 33, and umbrella-shaped filter elements 42 are evenly distributed along the length of the positioning column 41, and filter holes 421 are evenly penetrated on the umbrella-shaped filter element 42; the design of the umbrella-shaped filter element 42 not only increases the capacity of particulate matter, but also improves the filtering accuracy, thereby ensuring a more efficient air purification performance.

[0034] See also Figure 5-6 A second connecting ring 34 is fixedly connected to the outer side of the top of the snap-fitting bin 31, and a second connecting hole 341 is penetrated through the second connecting ring 34; the design of the second connecting ring 34 facilitates the stable connection between the filter cartridge 1 and other parts of the air purification device, ensuring the stable operation of the entire device and the reliability of long-term use.

[0035] The working principle of the utility model is:

[0036] When in use, the air to be purified enters the reducer 23 through the air inlet pipe 21, and enters the wave member 11 through the duckbill 231 at the bottom of the reducer 23, and the air is purified by the wave member 11, and the filtered particles are adsorbed in the gaps on the wave member 11;

[0037] By providing a reducer 23 in the air inlet pipe 21 and a duckbill 231 at the bottom of the reducer 23, it is possible to prevent the adsorbed particles from falling out when the filter cartridge 1 is removed. At the same time, the inner filter element 4 provided inside the wave element 11 can increase the particle holding capacity. When the gas is blown from the duckbill 231 into the wave element 11, the multiple umbrella-shaped filter elements 42 provided longitudinally can adsorb the particles in the air.

[0038] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. An anti-backflow air filter, comprising a filter cartridge (1), characterized in that: The filter cartridge (1) comprises a wave member (11), the wave member (11) being arranged in a tubular shape, and fixed heads (12) being arranged at both ends of the wave member (11), a connecting member (2) being inserted into the fixed head (12) arranged at one end, and a sealing member (3) being connected to the fixed head (12) arranged at the other end, an inner filter member (4) being connected to the top of the sealing member (3), and the inner filter member (4) being located inside the wave member (11).

2. The anti-backflow air filter according to claim 1, characterized in that: The connecting piece (2) comprises an air intake pipe (21), the air intake pipe (21) is inserted into the fixed head (12), and a reducing pipe (23) is fixedly connected to the inside of the air intake pipe (21), and a duckbill piece (231) is provided at the bottom of the reducing pipe (23).

3. The anti-backflow air filter according to claim 2, characterized in that: A sealing seat (121) is provided on the top of the fixed head (12), a first connecting ring (22) is fixedly connected to the outside of the air inlet pipe (21), and a first connecting hole (221) is formed through the upper end surface of the first connecting ring (22).

4. The anti-backflow air filter according to claim 2, characterized in that: The outer side of the air inlet pipe (21) is sleeved with a sealing ring (211).

5. The anti-backflow air filter according to claim 1, characterized in that: The sealing member (3) comprises a buckling chamber (31), the inner bottom of the buckling chamber (31) is fixedly connected to a sealing disk (32), and the upper end surface of the sealing disk (32) is fixedly connected to a connecting seat (33); The inner filter element (4) comprises a positioning column (41), wherein the positioning column (41) is mounted on a connecting seat (33), and umbrella-shaped filter elements (42) are evenly distributed on the positioning column (41) along the length of the positioning column (41), and filter holes (421) are evenly penetrated through the umbrella-shaped filter element (42).

6. The anti-backflow air filter according to claim 5, characterized in that: A second connecting ring (34) is fixedly connected to the outer side of the top of the buckle compartment (31), and a second connecting hole (341) is formed through the second connecting ring (34).

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