CN221683160U - An air filter element device used in air compressor - Google Patents

Abstract

The utility model discloses an air filter element device applied to an air compressor, comprising an inner filter cartridge, an outer filter cartridge, an air supply pipe, a filter screen barrel, a filter cotton mesh barrel and a negative pressure pump. The outer filter cartridge and the bottom of the inner filter cartridge are sealed with a bottom sealing plate. A partition plate is provided in the middle of the lower half of the inner filter cartridge. The upper part of the partition plate is an air inlet cavity and the lower part is a negative pressure cavity. The side wall of the air inlet cavity covered by the outer filter cartridge is provided with a plurality of first air inlet holes. The side wall of the negative pressure cavity covered by the outer filter cartridge is provided with a plurality of second air inlet holes. A fixing piece is provided at the barrel mouth of the filter screen barrel. A barrel plug is plugged at the top barrel mouth of the inner filter cartridge and an air supply pipe is inserted into the barrel plug. A negative pressure pump is provided in the middle of the bottom sealing plate. When the air enters the air inlet cavity, the granular impurities are first filtered out by the filter screen barrel, and the dust is filtered out by the filter cotton mesh barrel to purify the air. Finally, the air is sucked away by the negative pressure pump in the negative pressure cavity and discharged from the air outlet pipe into the compression structure. The filtration effect is good, the filtration is graded, and the disassembly and replacement are convenient.

Description

An air filter element device used in air compressor

Technical Field

The utility model relates to the technical field of air compressor filter elements, in particular to an air filter element device applied to an air compressor.

Background Art

As a device for generating compressed air, the air compressor is first sucked in through the air filter of the air compressor when it is working, and then undergoes the first-stage compression, the second-stage compression and other steps until it enters the exhaust pipe. Among them, the role of the air filter is to filter out dust, particles and other impurities in the air to ensure the cleanliness of the air volume. Traditional air filters mostly adopt a cylindrical structure. Without graded filtration, the filter element will filter the impurities in the air as a whole, and it is easy for the filter element to deteriorate in a short time and need to be replaced. The replacement is troublesome and wastes the filter element. If the air can be graded and the filter element of each stage can be easily replaced, the filtering effect and the convenience of replacement will be greatly improved.

Utility Model Content

The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, one purpose of the utility model is to propose an air filter element device for an air compressor to solve the problems of the filter element filtering effect deteriorating quickly and the filter element being inconvenient to remove.

According to the utility model, an air filter element device for an air compressor is proposed, comprising an inner filter cartridge, an outer filter cartridge, an air supply pipe, a filter screen barrel, a filter cotton screen cartridge and a negative pressure pump, wherein the outer filter cartridge is sleeved on the inner filter cartridge, the outer filter cartridge is flush with the bottom of the inner filter cartridge, the bottoms of the outer filter cartridge and the inner filter cartridge are sealed with a bottom sealing plate, a partition plate is provided in the middle of the lower half of the inner filter cartridge, the upper part of the partition plate is an air inlet cavity, and the lower part is a negative pressure cavity, a plurality of first air inlet holes are provided on the side wall of the air inlet cavity sleeved by the outer filter cartridge, and a plurality of first air inlet holes are provided on the side wall of the negative pressure cavity sleeved by the outer filter cartridge The second air inlet hole is provided, and a filter screen barrel is plugged in the air inlet cavity and the side wall of the filter screen barrel blocks the first air inlet hole; a fixing piece is provided at the barrel mouth of the filter screen barrel; a barrel plug is plugged at the top barrel mouth of the inner filter cartridge and an air supply pipe is inserted into the barrel plug; the bottom end of the air supply pipe is closed and a plurality of air outlet holes are provided on the side wall of the segment inserted into the filter screen barrel; a filter cotton mesh cylinder is plugged between the outer wall of the inner filter cartridge and the inner wall of the outer filter cartridge; a negative pressure pump is provided in the middle position of the bottom plate and the negative pressure pump is in the negative pressure cavity; the air outlet pipe of the negative pressure pump passes through the bottom plate and extends to below the bottom plate.

In some embodiments of the present invention, the fixing member includes four arc-shaped plates and four elastic steel bars, and the ends of adjacent arc-shaped plates are connected by an elastic steel bar.

In other embodiments of the present invention, the portion of the air supply tube exposed above the barrel plug is a thin tube, and the portion inside the barrel plug and below the barrel plug is a thick tube.

In other embodiments of the present invention, the filter screen barrel is a gauze screen cylinder, and the filter cotton screen cylinder is a fiber screen cylinder.

In other embodiments of the present invention, the bottom sealing plate is provided with a first annular rubber skin and a second annular rubber skin at the contact positions with the bottom ends of the outer filter cartridge and the inner filter cartridge, respectively, and the bottom sealing plate is fastened to the bottom ends of the outer filter cartridge and the inner filter cartridge with screws.

In some other embodiments of the present invention, the diameter of the first air inlet hole is 2-3 times that of the second air inlet hole.

In the utility model, when air enters the air inlet chamber, it is first filtered out of particulate impurities by the filter net barrel, and the gas is sucked into the outer filter cylinder, and the dust is filtered out by the filter cotton net cylinder to purify the air, and finally the air is sucked away by the negative pressure pump in the negative pressure chamber and discharged from the air outlet pipe into the compression structure. The filtering effect is good, the filtering is graded, and the filter element is easy to disassemble and replace.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

FIG1 is a schematic cross-sectional view of an air filter element device for an air compressor proposed by the present invention.

FIG. 2 is a schematic structural diagram of the fixing member provided by the present invention before being inserted and fixed.

FIG3 is a schematic diagram of the structure of the fixing member provided by the present invention after being fixed when inserted.

FIG. 4 is a schematic structural diagram of a bottom view of the outer filter cartridge and the inner filter cartridge provided by the present invention.

FIG. 5 is a schematic structural diagram of the bottom cover plate provided by the present invention.

In the figure: 1. cylinder plug; 2. air supply pipe; 3. inner filter cylinder; 30. partition plate; 31. first air inlet hole; 32. second air inlet hole; 33. negative pressure chamber; 4. filter screen barrel; 5. fixing piece; 51. arc plate; 52. elastic steel bar; 6. outer filter cylinder; 7. filter cotton mesh cylinder; 8. bottom plate; 80. screw; 81. first circular rubber skin; 82. second circular rubber skin; 9. negative pressure pump.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying 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.

Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

1-5, an air filter element device for an air compressor includes an inner filter cartridge 3, an outer filter cartridge 6, an air supply pipe 2, a filter screen barrel 4, a filter cotton screen cartridge 7 and a negative pressure pump 9, wherein the outer filter cartridge 6 is sleeved on the inner filter cartridge 3, the outer filter cartridge 6 is flush with the bottom of the inner filter cartridge 3, the outer filter cartridge 6 and the bottom of the inner filter cartridge 3 are sealed with a bottom sealing plate 8, a partition plate 30 is provided in the middle of the lower half of the inner filter cartridge 3, the upper part of the partition plate 30 is an air inlet cavity, and the lower part is a negative pressure cavity 33, a plurality of first air inlet holes 31 are provided on the side wall of the air inlet cavity sleeved by the outer filter cartridge 6, and a plurality of first air inlet holes 31 are provided on the side wall of the negative pressure cavity 33 sleeved by the outer filter cartridge 6 There are two air inlet holes 32, and a filter screen barrel 4 is plugged in the air inlet cavity and the side wall of the filter screen barrel 4 blocks the first air inlet hole 31. A fixing part 5 is provided at the barrel mouth of the filter screen barrel 4. A tube plug 1 is plugged at the top tube mouth of the inner filter cartridge 3 and an air supply pipe 2 is inserted into the tube plug 1. The bottom end of the air supply pipe 2 is closed and a plurality of air outlet holes 21 are provided on the side wall of the segment inserted into the filter screen barrel 4. A filter cotton mesh cylinder 7 is plugged between the outer wall of the inner filter cartridge 3 and the inner wall of the outer filter cartridge 6. A negative pressure pump 9 is provided in the middle position of the bottom plate 8 and the negative pressure pump 9 is in the negative pressure cavity 33. The air outlet pipe of the negative pressure pump 9 passes through the bottom plate 8 and extends to the bottom of the bottom plate 8.

The top end of the air supply pipe 2 is connected to the external air supply device, and the air is blown into the air supply pipe 2, discharged from the air outlet 21 at the bottom end of the air supply pipe 2, and enters the filter screen barrel 4. Since the filter screen barrel 4 blocks the first air inlet hole 31, the gas will flow from the barrel wall of the filter screen barrel 4, and then enter the cavity of the outer filter cylinder 6 from the first air inlet hole 31. The filter screen barrel 4 can filter out most of the particulate impurities, and some dust is further filtered by the filter cotton mesh cylinder 7, sucked into the negative pressure chamber 33 by the negative pressure pump 9, and finally pumped into the compression structure by the negative pressure pump 33.

For disassembly and replacement of the filter screen barrel 4, pull out the barrel plug 1, take out the fixings, and then take out the filter screen barrel 4. Since the filter cotton mesh barrel 7 has a relatively long service life, the entire device needs to be taken out when disassembling it. The filter cotton mesh barrel 7 can be replaced by disassembling the bottom plate 8, and then the filter cotton mesh barrel 7 can be installed again.

The fixing member 5 includes four arc-shaped plates 51 and four elastic steel bars 52 , and the ends of adjacent arc-shaped plates 51 are connected by an elastic steel bar 52 .

Pull the four elastic steel bars 52 inward by hand, retract the four arc plates 51 inward, put the fixing part on the inner wall of the barrel mouth of the filter screen barrel 4, loosen the four elastic steel bars 52, and the four arc plates 51 squeeze the wall of the filter screen barrel 4 to make it fit tightly against the inner wall of the air inlet cavity to prevent gas from entering the first air inlet hole 31 from above the filter screen barrel 4.

The portion of the air supply pipe 2 exposed above the plug is a thin pipe, and the portion inside the plug 1 and below the plug 1 is a thick pipe.

The thin tube is used to connect to an external gas supply device, while the thick tube diffuses the gas so that the gas can be evenly dispersed from the gas outlet 21 .

The filter screen barrel 4 is a gauze screen cylinder, which is a particle filter screen, and the mesh is used to filter particle impurities. The filter cotton screen cylinder 7 is a fiber screen cylinder, which is used to filter small dust.

The bottom sealing plate 8 is provided with a first annular rubber skin 81 and a second annular rubber skin 82 at the contact position with the bottom end of the outer filter cartridge 6 and the inner filter cartridge 3, respectively. The bottom sealing plate 8 is connected and fastened with screws 80 to maintain the sealing performance of the bottom sealing. The screws are also easy to remove.

The aperture of the first air inlet 31 is 2-3 times that of the second air inlet 32. The first air inlet 31 has a fast air intake speed and is also convenient for filtering particles, while the second air inlet 32 is mainly used to increase the negative pressure in the negative pressure chamber to facilitate air inhalation.

The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims (6)

1. Be applied to air filter device of air compressor machine, its characterized in that: including interior section of thick bamboo (3), outer section of thick bamboo (6), air supply pipe (2), filter screen bucket (4), filtration cotton net section of thick bamboo (7) and negative pressure pump (9), outer section of thick bamboo (6) cover is on interior section of thick bamboo (3), outer section of thick bamboo (6) flush with interior section of thick bamboo (3) bottom, the bottom of thick bamboo (6) and interior section of thick bamboo (3) adopts a sealing plate (8) to seal, interior section of thick bamboo (3) inner lower half intermediate position is equipped with division board (30), division board (30) upper portion is intake chamber, lower part is negative pressure chamber (33), be equipped with a plurality of first inlet port (31) on the lateral wall that the intake chamber was covered by outer section of thick bamboo (6), be equipped with a plurality of second inlet port (32) on the lateral wall that the negative pressure chamber (33) were covered by outer section of thick bamboo (6), the intake chamber is filled with filter screen bucket (4) and filter screen bucket (4) lateral wall plugs first inlet port (31), the bung position of filter screen bucket (4) is equipped with mounting (5), top section of thick bamboo (3) is equipped with in the section of thick bamboo (1) and air supply pipe (2) is filled with on the air supply pipe (2), the filter is characterized in that a filter cotton net barrel (7) is plugged between the outer wall of the inner filter cylinder (3) and the inner wall of the outer filter cylinder (6), a negative pressure pump (9) is arranged in the middle of the bottom sealing plate (8), the negative pressure pump (9) is arranged in a negative pressure cavity (33), and an air outlet pipe of the negative pressure pump (9) penetrates through the bottom sealing plate (8) and extends to the lower part of the bottom sealing plate (8).

2. An air filter device for an air compressor as defined in claim 1, wherein: the fixing piece (5) comprises four arc-shaped plates (51) and four elastic steel bars (52), and the ends of the adjacent arc-shaped plates (51) are connected through the elastic steel bars (52).

3. An air filter device for an air compressor as defined in claim 1, wherein: the part of the air supply pipe (2) exposed out of the upper part of the cylinder plug is a thin pipe, and the part in the cylinder plug (1) and below the cylinder plug (1) is a thick pipe.

4. An air filter device for an air compressor as defined in claim 1, wherein: the filter screen barrel (4) is a gauze barrel, and the filter cotton net barrel (7) is a fiber net barrel.

5. An air filter device for an air compressor as defined in claim 1, wherein: the bottom sealing plate (8) is provided with a first circular ring rubber (81) and a second circular ring rubber (82) at the contact positions with the bottom ends of the outer filter cylinder (6) and the inner filter cylinder (3), and the bottom sealing plate (8) is connected and fastened with the bottom ends of the outer filter cylinder (6) and the inner filter cylinder (3) through screws (80).

6. An air filter device for an air compressor as defined in claim 1, wherein: the aperture of the first air inlet hole (31) is 2-3 times that of the second air inlet hole (32).