Air filter

Abstract

An air filter has a housing, a filter core, a resilient abutting element, a sleeve, a threaded rod bracket, a threaded rod and a nut. The axial sealing is achieved by axially compressing the resilient abutting element, such that the user does not have to apply much physical effort to compress the resilient abutting element. The user can easily push the filter core into the housing, and then rotates and tightens the nut, which can axially compress the resilient abutting element. It is easy to apply force on rotating the nut, and better still, the nut can be rotated by an electric tool, which further facilitates the convenience in assembling. Besides, the nut only abuts the sleeve, and the threaded rod bracket does not abut the filter core. Consequently, the filter core is not blocked, thereby making the air smoothly pass through the filter core.

Description

technical field [0001] The invention relates to an air filter for separating suspended particles in the air. Background technique [0002] Air cleaner is a kind of device that is used to separate suspended particles in the air, and it is usually used in the ventilation system of building, air compressor and on the engine of automobile, locomotive; No. 6190432B1 patent application "Filtration device, sealing system and method", please refer to Figure 8 As shown, its air cleaner (aircleaner) includes a casing (housing) 91, a core material (filtermedia) 92 and a sealing device (sealingsystem) 93, and casing 91 includes a first casing 911 and a second casing body 912, the two housings 911, 912 are combined to form a housing space, the first housing 911 is provided with an air outlet 914 communicating with the housing space, and the second housing 912 is provided with a gas outlet 914 communicating with the housing space air inlet 913; [0003] see Figure 8 to Figure 10 As s...

AI Technical Summary

Problems solved by technology

[0006] First, since the sealing device 93 seals the gap between the core material 92 and the first shell 911 through the radial compression of the seal body 932, the outer diameter of the aforementioned seal body 932 is slightly larger than that of the corresponding part of the first shell 911. Therefore, the sealing device 93 must be difficult to assemble into the first housing 911, and it takes a lot of effort to insert the sealing device 93 into the first housing 911

[0007] Second, see Figure 9 and Figure 10 As shown, the corrugated separating material 922 and the plane separating material 921 in the prior art are bonded to each other with a sealant 925, and the sealant 925 is coated on one side of the plane separating material 921 and along the long side of the plane separating material 921 Extended coating, but because the wave-shaped separating material 922 undulates up and down in waves, the plane separating material 921 is only pasted to a small part of each crest of the wave-shaped separating material 922, so the plane separating material 921 and the wave-shaped separating material The bonding area of ​​922 is not enough to cause insufficient bonding strength, and the sealant 925 occupies a certain space in the channel 923A, 923B because it passes between any two adjacent peaks, thus hindering the flow of air; in addition, due to the sealant 925 925 is only coated on one side of the planar separation material 921, so the wave-shaped separation material 922 is only pasted to one of the planar separation materials 921B, and the other planar separation material 921A is not pasted with the sealant 925, so the planar separation material Insufficient bond strength between 921 and wavy separation material 922

And after this type of air cleaner has been used for a period of time, the wavy separation material 922 and the plane separation material 921 may have attached many suspended particles, thus causing the filtering effect to decline. At this time, clean air must be blown in from the air outlet 914 The core material 92, when the air passes through the wave-shaped separation material 922 and the planar separation material 921, the suspended particles attached will be taken out and blown out of the air inlet 913 together; The bonding strength of the core material 92 is insufficient, and the side of the core material 92 adjacent to the air inlet 913 is not provided with a ring frame 931 to axially abut, so under the blowing of the air, the wave-shaped separation material 922 at the center of the core material 92 and the flat surface The separation material 921 may separate from each other and protrude axially outward along the direction of air flow, so that the core material 92 cannot be used normally.

[0008] Third, see Figure 8 As shown, as mentioned above, the ring frame 931 can be used to axially abut and fix the core material 92, and the place where the ring frame 931 abuts against the core material 92 is a plurality of connecting ribs 9311 radially connected to the inner surface of the ring frame 931 However, when the connecting rib 9311 abuts against the core material 92, it will also block the passage at the corresponding position of the core material 92, thereby affecting the circulation of air

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