An air cleaner

Abstract

The application discloses an air filter, which comprises a box body, a first filter core mechanism internally provided with a first cavity, and a blowing system; the box body is provided with an air inlet and a third air outlet; the first filter core mechanism is arranged in the box body, the surface of the first filter core mechanism is provided with filter material, the first filter core mechanism is further provided with a first air outlet communicated with the first cavity, the first air outlet is communicated with the third air outlet; the blowing system is arranged on the box body and is used for blowing air into the first cavity through the first air outlet; the gas to be filtered passes through the air inlet, the filter material, the first air outlet and the third air outlet in sequence. The application does not need manual operation of an operator, and effectively avoids problems such as filter core breakage, dust entering the filter core and sealing failure.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of filtering devices, in particular to an air filter. BACKGROUND

[0002] The air filtering device is a device for capturing dust from gas-solid two-phase flow through the action of porous filter material and purifying the gas. It purifies and discharges the air with low dust content to ensure the cleanliness of the gas.

[0003] The air filter in the prior art is internally provided with a filter core, a threaded rod is arranged beside the filter core, the threaded rod is rotated by an operator to drive the fixed plate to move up and down, the scraper on the fixed plate scrapes the filter core up and down, the stains are scraped off, and then water is manually poured from the water inlet to wash, and the stains flow out from the water outlet.

[0004] It can be seen that the treatment of the filter core in the prior art requires manual operation of the operator at each link, so that improper operation is easy to cause the filter core to be broken, dust to enter the filter core, and sealing failure and other hidden dangers. SUMMARY

[0005] The purpose of the present application is to provide an air filter to solve the problems of filter core breakage, dust entering the filter core, and sealing failure and other problems caused by manual operation in the prior art.

[0006] The present application provides an air filter, comprising a box body, a first filter core mechanism internally provided with a first cavity, and a gas blowing system.

[0007] The box body is provided with an air inlet and a third air outlet.

[0008] The first filter core mechanism is arranged inside the box body, the surface of the first filter core mechanism is provided with filter material, and the first filter core mechanism is further provided with a first air outlet in communication with the first cavity, and the first air outlet is in communication with the third air outlet.

[0009] The gas blowing system is arranged on the box body, and is used for blowing gas into the first cavity through the first air outlet.

[0010] As a preferred, the gas to be filtered passes through the air inlet, the filter material, the first air outlet and the third air outlet in sequence.

[0011] The first filter core mechanism is provided with a plurality of first filter core mechanisms, each first filter core mechanism is sequentially inserted into the box body to divide the box body into a plurality of spaces, and a gap is left between the bottom of the first filter core mechanism and the bottom of the box body, the bottom of the box body is provided with an exhaust hole, and the impurities filtered by the filter material on the surface of the first filter core mechanism are discharged through the exhaust hole.

[0012] Preferably, the air filter further includes a support frame and a handle. The support frame is located at the bottom of the housing, the first filter element mechanism is fixed to the housing via the support frame, and the handle is located above the first filter element mechanism.

[0013] Preferably, the blowing system includes several sets of parallel blowing mechanisms and a control box. Each set of blowing mechanisms includes a gas storage tank, a one-way valve, a gas guide pipe, a pulse valve, and a back-blowing nozzle connected in sequence. The back-blowing nozzle is used to blow air into the first cavity through the first air outlet. The control box is located on one side of the bottom of the box and is connected to the one-way valve and the pulse valve for controlling the one-way valve and the pulse valve.

[0014] Preferably, the air filter further includes a second filter element mechanism and a dust discharge channel. The second filter element mechanism is located on the top of the housing and above the first filter element mechanism. The gas to be filtered passes through the second filter element mechanism, the air inlet, the filter material, the first air outlet, and the third air outlet in sequence. The dust discharge channel is installed inside the housing, and impurities filtered by the second filter element mechanism are discharged through the dust discharge channel.

[0015] Preferably, the second filter element mechanism includes a filter plate with a second cavity inside and several cyclone tubes. The cyclone tubes pass through the filter plate, and the sides of the cyclone tubes are provided with dust discharge holes. The bottom of the cyclone tubes is provided with a second air outlet. The filter plate is provided with a dust discharge port. The dust discharge holes of the cyclone tubes are connected to the second cavity, the dust discharge port, and the dust discharge channel in sequence. The gas to be filtered passes through the cyclone tubes, the second air outlet, the air inlet, the filter material, the first air outlet, and the third air outlet in sequence.

[0016] Preferably, the air filter also includes a clamping mechanism, which is disposed on the housing and is used to fix and clamp the first filter element mechanism.

[0017] Preferably, the pressing mechanism includes a mounting plate disposed on the inner side wall of the housing, and each mounting plate is equipped with a corresponding support rod by a spring. The support rod is used to press the first filter element mechanism from the side.

[0018] Preferably, the mounting plates include a first mounting plate, a second mounting plate, a third mounting plate, and a fourth mounting plate arranged side-by-side and spaced apart on the upper part of the inner sidewall of the housing, and a fifth mounting plate, a sixth mounting plate, a seventh mounting plate, and an eighth mounting plate arranged side-by-side and spaced apart on the lower part of the inner sidewall of the housing. Fixed shafts are provided between the first and second mounting plates, between the third and fourth mounting plates, between the fifth and sixth mounting plates, and between the seventh and eighth mounting plates. The pressing mechanism further includes a rotatable U-shaped pressure rod. The end of the first side arm of the U-shaped pressure rod is rotatably connected to the fixed shaft of the first mounting plate, the middle part of the first side arm of the U-shaped pressure rod is rotatably connected to the fixed shaft of the fifth mounting plate via a connecting rod, the end of the second side arm of the U-shaped pressure rod is rotatably connected to the fixed shaft of the third mounting plate, and the middle part of the second side arm of the U-shaped pressure rod is rotatably connected to the fixed shaft of the seventh mounting plate via a connecting rod. The U-shaped pressure rod is used to press the first filter element mechanism from above.

[0019] Preferably, the air filter further includes a cover plate with a main air outlet, the cover plate being installed on a third air outlet on the side of the housing, and the third air outlet being connected to the main air outlet.

[0020] The air filter provided by this invention has the following beneficial effects:

[0021] The present invention provides a first filter element mechanism and an air blowing system. By releasing high-pressure gas in the air blowing system, the first cavity of the first filter element mechanism is back-blown, which blows off the dust film formed by impurities on the outer surface of the filter material of the first filter element mechanism, thereby automatically completing the self-cleaning process of the first filter element mechanism.

[0022] This invention eliminates the need for manual operation, effectively preventing problems such as filter element breakage, dust ingress into the filter element, and seal failure; it is also easy to operate, has a simple structure, and is highly practical. Attached Figure Description

[0023] Figure 1 This is an exploded view of an air filter provided in an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of the structure of an air filter (excluding the second filter element mechanism) provided in an embodiment of the present invention;

[0025] Figure 3 A schematic diagram of the structure of an air filter (excluding the first and second filter elements) provided in an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of the second filter element mechanism provided in an embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of the second filter element mechanism provided in an embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the structure of a cyclone tube provided in an embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of the structure of the first filter element mechanism provided in an embodiment of the present invention;

[0030] Figure 8 This is a schematic diagram of the air blowing system provided in an embodiment of the present invention;

[0031] Figure 9 This is a schematic diagram of the clamping mechanism provided in an embodiment of the present invention;

[0032] Figure 10 This is an enlarged schematic diagram of the clamping mechanism provided in an embodiment of the present invention.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1-Box,

[0035] 2-First filter element mechanism, 21-First air outlet, 22-Exhaust hole, 23-Support frame, 25-Filter material, 26-Handle, 27-Air inlet;

[0036] 3-Second filter element mechanism, 31-Dust discharge channel, 32-Swirl tube, 321-Upper panel, 322-Lower panel, 323-Dust discharge hole, 324-Fixed spiral blade, 33-Filter plate, 34-Dust discharge port, 35-Second air outlet;

[0037] 4-Blowing system, 41-One-way valve, 42-Air tank, 43-Pulse valve, 44-Backflush nozzle, 45-Air guide pipe, 46-Control box;

[0038] 5-Cover plate;

[0039] 6-Clamping mechanism, 61-First mounting plate, 611-Spring, 612-Support rod, 62-Second mounting plate, 63-Third mounting plate, 64-Fourth mounting plate, 65-Fifth mounting plate, 66-Sixth mounting plate, 67-Seventh mounting plate, 68-Eighth mounting plate, 69-U-shaped pressure bar, 691-First side arm, 692-Second side arm;

[0040] 7-Third air outlet;

[0041] 8-Main air outlet. Detailed Implementation

[0042] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0043] Example 1

[0044] like Figure 1 As shown, the present invention provides an air filter, including a housing 1, a first filter element mechanism 2 with a first cavity inside, and an air blowing system 4; the housing 1 is provided with an air inlet 27 and a third air outlet 7; the first filter element mechanism 2 is disposed inside the housing 1, and a filter material 25 is disposed on the surface of the first filter element mechanism 2; the first filter element mechanism 2 is also provided with a first air outlet 21 communicating with the first cavity, and the first air outlet 21 is connected to the third air outlet 7; the air blowing system 4 is disposed on the housing 1, and the air blowing system 4 is used to blow air into the first cavity through the first air outlet 21; the gas to be filtered passes sequentially through the air inlet 27, the filter material 25, the first air outlet 21, and the third air outlet 7.

[0045] The housing 1 can be an open hexahedron with external dimensions of 800mm × 491mm × 400mm, and the maximum intake volume flow rate of the air filter is 4024m³ / h. 3 / h. The dimensions of the first filter element mechanism 2 can be 650mm×340mm×315mm. The filter material 25 on its surface is a high-efficiency back-blowing filter material 25. Through physical interception, sand and dust pollutants are intercepted on the filter material 25 of the first filter element mechanism 2. The filtered gas passes through the first cavity of the first filter element mechanism 2 to the first air outlet 21, then to the third air outlet 7, and finally discharged from the main air outlet 8. The blowing system 4 back-blowing high-pressure air from the first air outlet 21 into the first cavity of the first filter element mechanism 2 blows off the dust film formed by impurities on the outer surface of the filter material 25 of the first filter element mechanism 2, thereby completing the self-cleaning of the first filter element mechanism 2. This process does not require manual intervention and effectively avoids problems such as filter element breakage, dust entering the filter element, and seal failure.

[0046] like Figure 2 , Figure 3 and Figure 7As shown, multiple first filter element mechanisms 2 are provided, each first filter element mechanism 2 is sequentially inserted into the housing 1, dividing the housing 1 into multiple spaces, and a gap is left between the bottom of the first filter element mechanism 2 and the bottom of the housing 1. An exhaust port 22 is provided at the bottom of the housing 1, through which impurities filtered by the filter material 25 on the surface of the first filter element mechanism 2 are discharged. The air filter also includes a support frame 23 and a handle 26. The support frame 23 is located at the bottom inside the housing 1, and the first filter element mechanism 2 is fixed to the housing 1 by the support frame 23. The handle 26 is provided above the first filter element mechanism 2.

[0047] The first filter element mechanism 2 can be a truncated quadrangular shape, and one or more sets can be provided. There are two ways to set the exhaust port 22. When there is a gap between the bottom of the first filter element mechanism 2 and the bottom of the box 1, the gap is connected to the exhaust port 22 and the dust discharge channel 31, so that the impurities filtered by the filter material 25 of the first filter element mechanism 2 can be discharged. In this case, only one exhaust port 22 needs to be set. Alternatively, the bottom of the first filter element mechanism 2 can be set without connection, that is, the bottom of the first filter element mechanism 2 is attached to the bottom of the box 1 without gap. Each first filter element mechanism 2 is inserted into the box 1 in sequence, dividing the box 1 into multiple independent spaces. Each space is provided with an exhaust port 22 at the bottom of the box 1. In this case, multiple exhaust ports 22 are set, and each exhaust port 22 is connected to the dust discharge channel 31. The exhaust port 22 is used to discharge the impurities filtered by the filter material 25 of the first filter element mechanism 2. The support frame 23 is set at the bottom of the box 1. Each group of first filter element mechanism 2 corresponds to one support frame 23. The first filter element mechanism 2 is supported and fixed from one side of the bottom of the first filter element mechanism 2. Each group of first filter element mechanism 2 is provided with a handle 26 for easy replacement and extraction.

[0048] like Figure 8 As shown, the air blowing system 4 includes several sets of air blowing mechanisms connected in parallel and a control box 46. Each set of air blowing mechanisms includes an air storage tank 42, a one-way valve 41, an air guide pipe 45, a pulse valve 43, and a back-blowing nozzle 44 connected in sequence. The back-blowing nozzle 44 is used to blow air into the first cavity through the first air outlet 21. The control box 46 is located on one side of the bottom of the box body 1 and is connected to the one-way valve 41 and the pulse valve 43 for controlling the one-way valve 41 and the pulse valve 43.

[0049] Controlled by the control box 46, the high-pressure air in the air tank 42 is released using the pulse valve 43, one-way valve 41, and air guide pipe 45. The back-blowing nozzle 44 faces the first air outlet 21 and blows air into the first cavity through the first air outlet 21. That is, the blowing direction is opposite to the flow direction of the gas to be filtered, thereby blowing off the dust film formed by impurities on the outer surface of the filter material 25 of the first filter element mechanism 2, thus completing the self-cleaning process of the first filter element mechanism 2. The air guide pipe 45 is also used to introduce air into the air tank 42 to ensure the replenishment of air after release. Multiple sets of air tanks 42 and back-blowing nozzles 44 can be set to ensure the efficiency of the self-cleaning of the first filter element mechanism 2.

[0050] like Figure 4 As shown, the air filter also includes a second filter element mechanism 3 and a dust discharge channel 31. The second filter element mechanism 3 is located on the top of the housing 1 and above the first filter element mechanism 2. The gas to be filtered passes through the second filter element mechanism 3, the air inlet 27, the filter material 25, the first air outlet 21, and the third air outlet 7 in sequence. The dust discharge channel 31 is installed inside the housing 1, and the impurities filtered by the second filter element mechanism 3 are discharged through the dust discharge channel 31.

[0051] like Figure 5 and Figure 6 As shown, the second filter element mechanism 3 includes a filter plate 33 with a second cavity inside and several cyclone tubes 32. The cyclone tubes 32 are installed on the filter plate 33. The side of the cyclone tubes 32 is provided with a dust discharge hole 323. The bottom of the cyclone tubes 32 is provided with a second air outlet 35. The filter plate 33 is provided with a dust discharge port 34. The dust discharge hole 323 of the cyclone tubes 32 is connected to the second cavity, the dust discharge port 34, and the dust discharge channel 31 in sequence. The gas to be filtered passes through the cyclone tubes 32, the second air outlet 35, the air inlet 27, the filter material 25, the first air outlet 21, and the third air outlet 7 in sequence.

[0052] The filter plate 33 of the second filter element mechanism 3 is hinged to the top of the housing 1, ensuring a tight seal. The filter plate 33 has a second cavity area for several cyclone tubes 32, which are closely arranged on the filter plate 33. On one hand, dust generated by the centrifugation of the gas to be filtered through the cyclone tubes 32 is discharged from the dust discharge hole 323 to the dust discharge port 34, and finally discharged from the dust discharge channel 31. On the other hand, the gas, after preliminary filtration by the cyclone tubes 32, passes sequentially through the cyclone tubes 32, the second air outlet 35, and the air inlet 27, reaching the filter material 25, and then discharged from the first air outlet 21 and the third air outlet 7. A sealing strip is provided at the joint between the dust discharge channel 31 and the second filter element mechanism 3 to ensure the machine's airtightness.

[0053] The second filter element mechanism 3 can adopt a single-layer cyclone tube 32 structure or a multi-layer cyclone tube 32 stacked structure. The thickness of the single-layer cyclone tube 32 is approximately 60 mm, and the thickness of the double-layer cyclone tube 32 is approximately 120 mm. The cyclone tube 32 includes an upper panel 321 and a lower panel 322. One side of the panel has a semi-circular notch, and the two notches hold the semi-cylindrical cyclone tube 32. Fixed spiral blades 324 are provided on the upper part of the semi-cylindrical tube, and the lower part of the semi-cylindrical tube is the second air outlet 35. The gas to be filtered enters from the top of the cyclone tube 32, is centrifuged by the fixed spiral blades 324, and is discharged from the second air outlet 35 into the air inlet 27. The dust generated by centrifugation is discharged from the dust discharge hole 323 on the side of the cyclone tube 32 to the dust discharge port 34, and finally discharged from the dust discharge channel 31. The gas to be filtered passes sequentially through the cyclone tube 32, the second air outlet 35, the air inlet 27, the filter material 25, the first air outlet 21, and the third air outlet 7. The gas passes through a multi-stage filtration system, resulting in higher filtration efficiency.

[0054] like Figure 9 As shown, the air filter further includes a pressing mechanism 6, which is mounted on the housing 1 and used to fix and press the first filter element mechanism 2. The pressing mechanism 6 includes a mounting plate mounted on the inner side wall of the housing 1, and each mounting plate is equipped with a corresponding support rod 612 by a spring 611. The support rod 612 is used to press the first filter element mechanism 2 from the side.

[0055] like Figure 9 and Figure 10 As shown, the mounting plates include a first mounting plate 61, a second mounting plate 62, a third mounting plate 63, and a fourth mounting plate 64 arranged side-by-side and spaced apart on the upper part of the inner sidewall of the housing 1, and a fifth mounting plate 65, a sixth mounting plate 66, a seventh mounting plate 67, and an eighth mounting plate 68 arranged side-by-side and spaced apart on the lower part of the inner sidewall of the housing 1. Fixing devices are provided between the first mounting plate 61 and the second mounting plate 62, between the third mounting plate 63 and the fourth mounting plate 64, between the fifth mounting plate 65 and the sixth mounting plate 66, and between the seventh mounting plate 67 and the eighth mounting plate 68. The clamping mechanism 6 further includes a rotatable U-shaped pressure rod 69. The end of the first side arm 691 of the U-shaped pressure rod 69 is connected to the fixed shaft of the first mounting plate 61. The middle part of the first side arm 691 of the U-shaped pressure rod 69 is connected to the fixed shaft of the fifth mounting plate 65 via a connecting rod. The end of the second side arm 692 of the U-shaped pressure rod 69 is connected to the fixed shaft of the third mounting plate 63 via a connecting rod. The middle part of the second side arm 692 of the U-shaped pressure rod 69 is connected to the fixed shaft of the seventh mounting plate 67 via a connecting rod. The U-shaped pressure rod 69 is used to clamp the first filter element mechanism 2 from above.

[0056] In this design, each mounting plate of the pressing mechanism 6 is installed on the inner wall of the housing 1. A spring 611 is connected to each mounting plate, and the other end of the spring 611 is connected to a support rod 612. The spring 611 presses against the support rod 612, and the support rod 612 presses against the side of the first filter element mechanism 2. The eight sets of mounting plates of the pressing mechanism 6 are installed in two rows at intervals, making the first filter element mechanism 2 more stable.

[0057] On the other hand, the U-shaped pressure rod 69 is connected to each fixed shaft, so that the U-shaped pressure rod 69 can be flipped. The U-shaped pressure rod 69 is used to press the first filter element mechanism 2 from above.

[0058] like Figure 2 As shown, the air filter also includes a cover plate 5 with a main air outlet 8. The cover plate 5 is installed on the third air outlet 7 on the side of the housing 1, and the third air outlet 7 is connected to the main air outlet 8.

[0059] The cover plate 5 of the main air outlet 8 is screwed to the housing 1 to ensure good sealing. The air blowing system 4 has a first filter element mechanism 2 on one side and the cover plate 5 of the main air outlet 8 on the other side. When the air filter is working, the air blowing system 4 is not working; the gas is discharged from the first air outlet 21 and then through the third air outlet 7 to the main air outlet 8 for reuse. When the air filter is self-cleaning, the air blowing system 4 works, first releasing the high-pressure air in the air storage tank 42. The high-pressure air then blows off the dust film through the back-blowing nozzle 44.

[0060] In addition, a dust pump can be installed, which is connected to the dust discharge channel 31. The dust pump adopts an axial flow electric dust extraction scheme. The dust pump uses a 900V power supply adjustable DC motor to drive the dust pump impeller, and establishes a pressure difference between the upstream and downstream of the impeller, thereby driving the airflow to achieve dust extraction, making the air filter dust removal efficiency higher.

[0061] Example 2

[0062] like Figure 1 As shown, an embodiment of the present invention provides an air filter, comprising a housing 1, a second filter element mechanism 3, a dust discharge channel 31, an air inlet 27, a first filter element mechanism 2, a control box 46, an air blowing system 4, and a cover plate 5 for a main air outlet 8, weighing approximately 120 kg.

[0063] like Figure 4 The second filter element mechanism 3 adopts a single-layer cyclone tube 32 structure or a double-layer cyclone tube 32 structure. The single-layer cyclone tube 32 has a filtration efficiency of over 97% and a resistance of about 1.2 kPa at a dust extraction flow rate of 10%. The double-layer cyclone tube 32 has a filtration efficiency of over 99% for each layer of cyclone tube 32 at a dust extraction flow rate of 20% and a resistance of about 2.5 kPa at a dust extraction flow rate of 10%.

[0064] like Figure 7As shown, the first filter element mechanism 2 uses high-efficiency backflushing filter media 25 as the medium. Through physical interception, it further intercepts sand and dust pollutants on the filter media, thereby making the filtration efficiency of the entire air filter higher than 99.9% or higher. During the entire process, dust in the air is blocked by the filter media, and countless small dust particles form a dust film on the outer surface of the filter media. The dust film can improve the filtration effect, but it also increases the airflow resistance.

[0065] like Figure 8 As shown, when too much dust accumulates on the surface of the filter material 25 of the first filter element mechanism 2 and the airflow resistance is too high, the blowing system 4 starts to work. First, it releases high-pressure air in the air storage tank 42 through pulse, with a pressure of about 7 bar. After the high-pressure air is rectified through the back-blowing nozzle 44, it back-blowing the first cavity inside the first filter element mechanism 2, blowing off the dust film on the outer surface of the first filter element mechanism 2. Then, it is drawn away by the dust pump through the dust discharge channel 31, thereby completing the self-cleaning work of the first filter element mechanism 2.

[0066] like Figure 7 and Figure 9 As shown, when replacing the filter element of the first filter element mechanism 2, remove the filter plate 33 of the second filter element mechanism 3. Since there are no obstructions above the first filter element mechanism 2, simply lift the clamping handle 26 of the first filter element mechanism 2 upwards, causing the clamping mechanism 6 to rotate upwards, thus releasing the clamping of the first filter element mechanism 2 and allowing it to loosen for replacement. After replacing the first filter element mechanism 2, press down the clamping handle to drive the clamping mechanism 6 to press the entire first filter element mechanism 2 forward. When assembling the second filter element mechanism 3, the clamping handle 26 will be pressed down again to prevent it from loosening during operation, ensuring that the first filter element mechanism 2 remains in a clamped state.

[0067] The specific working principle is as follows: After placing the air filter and turning on the power, the gas filtration path is as follows: it first enters the cyclone tube 32 of the second filter element mechanism 3, exits from the second air outlet 35 of the cyclone tube 32, enters the air inlet 27 of the first filter element, passes from the air inlet 27 to the surface filter material 25 of the first filter element mechanism 2, then exits from the first air outlet 21 connected to the first cavity, and finally exits through the third air outlet 7 to the main air outlet 8 for utilization. When the air filter is filtering, the air blowing system 4 does not work; when the air filter is self-cleaning, the air blowing system 4 works, first releasing the high-pressure air in the air tank 42, and the high-pressure air blows off the dust film through the back-blowing nozzle 44, completing the air filter self-cleaning work.

[0068] The above description, based on the embodiments shown in the figures, details the structure, features, and effects of the present invention. The above description is only a preferred embodiment of the present invention, but the present invention is not limited to the scope of implementation shown in the figures. Any changes made in accordance with the concept of the present invention, or equivalent embodiments modified to have equivalent changes, that do not exceed the spirit covered by the specification and figures, should be within the protection scope of the present invention.

Claims

1. An air filter, characterized in that, Includes a housing, a first filter element mechanism with a first cavity inside, and an air blowing system; The enclosure is equipped with an air inlet and a third air outlet; The first filter element mechanism is located inside the housing. The surface of the first filter element mechanism is provided with filter material. The first filter element mechanism is also provided with a first air outlet that communicates with the first cavity. The first air outlet is connected to the third air outlet. An air blowing system is installed on the housing, and the air blowing system is used to blow air into the first cavity through the first air outlet; The gas to be filtered passes sequentially through the air inlet, filter material, first air outlet, and third air outlet; The air filter also includes a pressing mechanism, which is mounted on the housing and is used to fix the pressing mechanism of the first filter element. The clamping mechanism includes: A mounting plate is set on the inner side wall of the box, and each mounting plate is equipped with a corresponding support rod by a spring. The support rod is used to press the first filter element mechanism from the side. The mounting plates include a first mounting plate, a second mounting plate, a third mounting plate, and a fourth mounting plate arranged side by side at intervals on the upper part of the inner side wall of the box, and a fifth mounting plate, a sixth mounting plate, a seventh mounting plate, and an eighth mounting plate arranged side by side at intervals on the lower part of the inner side wall of the box. Fixed shafts are provided between the first and second mounting plates, between the third and fourth mounting plates, between the fifth and sixth mounting plates, and between the seventh and eighth mounting plates. The pressing mechanism further includes: a rotatable U-shaped pressure rod, the end of the first side arm of the U-shaped pressure rod is connected to the fixed shaft of the first mounting plate, the middle part of the first side arm of the U-shaped pressure rod is connected to the fixed shaft of the fifth mounting plate through a connecting rod, the end of the second side arm of the U-shaped pressure rod is connected to the fixed shaft of the third mounting plate, and the middle part of the second side arm of the U-shaped pressure rod is connected to the fixed shaft of the seventh mounting plate through a connecting rod. The U-shaped pressure rod is used to press the first filter element mechanism from above.

2. The air filter according to claim 1, characterized in that, Multiple first filter element mechanisms are provided, and each first filter element mechanism is sequentially inserted into the box body to divide the box body into multiple spaces. A gap is left between the bottom of the first filter element mechanism and the bottom of the box body. An exhaust hole is provided at the bottom of the box body, and impurities filtered by the filter material on the surface of the first filter element mechanism are discharged through the exhaust hole.

3. The air filter according to claim 2, characterized in that, The air filter also includes a support frame and a handle. The support frame is located at the bottom of the housing. The first filter element mechanism is fixed to the housing via the support frame. The handle is located above the first filter element mechanism.

4. The air filter according to claim 1, characterized in that, The blowing system includes several sets of parallel blowing mechanisms and a control box. Each set of blowing mechanisms includes a gas storage tank, a one-way valve, a gas guide pipe, a pulse valve, and a back-blowing nozzle connected in sequence. The back-blowing nozzle is used to blow air into the first cavity through the first air outlet. The control box is located on one side of the bottom of the box and is connected to the one-way valve and the pulse valve for controlling the one-way valve and the pulse valve.

5. The air filter according to claim 1, characterized in that, The air filter also includes a second filter element mechanism and a dust discharge channel. The second filter element mechanism is located on the top of the housing and above the first filter element mechanism. The gas to be filtered passes through the second filter element mechanism, the air inlet, the filter material, the first air outlet, and the third air outlet in sequence. The dust discharge channel is installed inside the housing, and impurities filtered by the second filter element mechanism are discharged through the dust discharge channel.

6. The air filter according to claim 5, characterized in that, The second filter element mechanism includes a filter plate with a second cavity inside and several cyclone tubes. The cyclone tubes pass through the filter plate, and the sides of the cyclone tubes are provided with dust discharge holes. The bottom of the cyclone tubes is provided with a second air outlet. The filter plate is provided with a dust discharge port. The dust discharge holes of the cyclone tubes are connected to the second cavity, the dust discharge port, and the dust discharge channel in sequence. The gas to be filtered passes through the cyclone tubes, the second air outlet, the air inlet, the filter material, the first air outlet, and the third air outlet in sequence.

7. The air filter according to claim 1, characterized in that, The air filter also includes a cover plate with a main air outlet, which is installed on the third air outlet on the side of the housing and is connected to the main air outlet.

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