Large-flow low-pressure-difference small-size self-cleaning air filter

Abstract

The utility model relates to the field of air purification, and particularly discloses a high-flow low-pressure-difference small-size self-cleaning air filter which comprises a shell, a plate type filter element, a sealing element, a controller, a pressure difference switch, a bearing seat, a reciprocating screw rod, a chain wheel unit, a strip-shaped nozzle, an energy storage unit and a pressure guide hose, the two plate type filter elements are fixedly connected with the shell respectively, the two bearing seats are fixedly connected with the shell respectively, the two ends of the reciprocating screw rod are embedded into the corresponding bearing seats respectively, the two ends of the pressure guide hose are communicated with the strip-shaped nozzle and the output end of the energy storage unit respectively, the controller is fixedly connected with the shell, and the differential pressure switch is fixedly connected with the shell. And each group of sealing elements are respectively arranged on the peripheral side of the corresponding plate type filter element. The air filter element can be self-cleaned in the running process of equipment, and the air filter element has the advantages of being smaller in size, larger in air inlet amount, lower in air inlet pressure loss, higher in filtering precision and better in automation degree.

Description

Technical Field

[0001] The utility model relates to the technical field of air purification, in particular to a self-cleaning air filter with large flow, low pressure difference and small volume. Background Art

[0002] At present, barrel-type air filters or box-type air filters are evenly installed on various mobile equipment or air compressors such as mining machinery, engineering machinery, tanks and armored vehicles, and are composed of oil bath air pre-filters, cyclone air pre-filters and barrier filter elements to extend the service life of the filter element as much as possible. Under normal road conditions, the dust content in the air is relatively small, and the service life of the filter element is relatively long. However, due to the inherent "dust holding capacity" limitation of the air filter element itself, it is not suitable for long-term use in areas with strong winds or poor air quality. The service life of the filter element is very low, which directly affects the timeliness, fuel consumption and operating costs of vehicle equipment.

[0003] However, in the prior art, the air filter is replaced too frequently, which affects the operating efficiency. At the same time, manual cleaning of the filter element is time-consuming, and blindly cleaning the filter element with high-pressure gas will damage the filter material, resulting in a decrease in the filtering accuracy of the filter element. Dust in the dirty air is brought into the filter element and causes mechanical wear of the air-using equipment. Utility Model Content

[0004] The purpose of the utility model is to provide a self-cleaning air filter with large flow, low pressure difference and small volume, aiming to solve the technical problems in the prior art that the air filter is replaced too frequently, affecting the operating efficiency, and manual cleaning of the filter element is time-consuming, and blindly cleaning the filter element with high-pressure gas will damage the filter material, resulting in a decrease in the filtering accuracy of the filter element, and dust in the dirty air is brought into the filter element, which will also cause mechanical wear of the air-using equipment.

[0005] To achieve the above-mentioned purpose, the utility model adopts a self-cleaning air filter with large flow, low pressure difference and small volume, including a shell, a plate filter element, a seal, a controller, a pressure difference switch, a bearing seat, a reciprocating screw, a sprocket unit, a strip nozzle, an energy storage unit and a pressure-leading hose. The energy storage unit is fixedly connected to the shell and is located at the lower end of the shell. The number of the plate filter elements is two, and the two plate filter elements are respectively fixedly connected to the shell and are respectively located inside the shell, and the two plate filter elements are vertically installed in a V-shaped tilted manner. The number of the bearing seats is two, and the two bearing seats are respectively fixedly connected to the shell and are respectively embedded in both sides of the shell. The two ends of the reciprocating screw They are respectively embedded in the corresponding bearing seats, and the reciprocating screw is located in the shell, the sprocket unit is arranged on the inner side of the shell, and one end of the sprocket unit is sleeved on the outer wall of the reciprocating screw, the strip nozzle and the reciprocating screw are adapted to each other, the two ends of the pressure-leading hose are respectively connected with the strip nozzle and the output end of the energy storage unit, the controller is fixedly connected to the shell and located on the inner side of the shell, the differential pressure switch is fixedly connected to the shell and located on the inner side of the shell, the number of the sealing members is multiple groups, each group of the sealing members is respectively arranged on the circumference of the corresponding plate filter element, and are respectively located between the shell and the plate filter element.

[0006] Among them, the sprocket unit includes a large sprocket, a chain, a small sprocket and a DC motor. The large sprocket is fixedly connected to the reciprocating screw and is sleeved on the outer wall of the reciprocating screw. The small sprocket is arranged on the inner side of the shell. The chain is sleeved on the outer walls of the large sprocket and the small sprocket. The DC motor is arranged on the inner side of the shell, and the output end of the DC motor is fixedly connected to the axis of the small sprocket.

[0007] Wherein, the energy storage unit includes an accumulator, a pulse valve and a fixed support, the number of the fixed supports is multiple groups, each group of the fixed supports is fixedly connected to the shell and is respectively located at the lower end of the shell, the accumulator is fixedly connected to the multiple groups of the fixed supports and embedded in the multiple groups of the fixed supports, the pulse valve is connected to the output end of the accumulator and is located at one end of the accumulator, one end of the pressure hose is connected to the strip nozzle, and the other end of the pressure hose is connected to the output end of the pulse valve.

[0008] Among them, the self-cleaning air filter with large flow, low pressure difference and small volume also includes an air intake rainproof canopy, and the number of the air intake rainproof canopy is multiple, each of the air intake rainproof canopy is fixedly connected to the shell and is respectively located on both sides of the shell.

[0009] Among them, the self-cleaning air filter with large flow, low pressure difference and small volume also includes an air outlet, which is connected to the shell and is arranged in any three directions of A, B and C of the shell.

[0010] According to the on-site climate and air quality, the pulse width T1, pulse interval T2 and pulse number N of the strip nozzle and the pulse valve are set using the output signal of the controller.

[0011] The beneficial effect of the large-flow, low-pressure-difference, small-volume self-cleaning air filter of the utility model is that it enables the equipment to self-clean the air filter element during operation, greatly prolonging the service life of the air filter element. Compared with the prior art, it has the advantages of smaller volume, larger air intake volume, lower air intake pressure loss, higher filtration accuracy and better automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 The utility model is a longitudinal internal structure perspective view of a self-cleaning air filter with large flow, low pressure difference and small volume.

[0014] Figure 2 The utility model is a perspective view of the transverse internal structure of a self-cleaning air filter with large flow, low pressure difference and small volume.

[0015] 1-housing, 2-plate filter element, 3-seal, 4-controller, 5-differential pressure switch, 6-bearing seat, 7-reciprocating screw, 8-large sprocket, 9-chain, 10-small sprocket, 11-DC motor, 12-strip nozzle, 13-accumulator, 14-pulse valve, 15-fixed support, 16-pressure hose, 17-intake rainproof canopy, 18-air outlet. DETAILED DESCRIPTION

[0016] See also Figure 1 and Figure 2The utility model provides a self-cleaning air filter with large flow, low pressure difference and small volume, including a housing 1, a plate filter element 2, a seal 3, a controller 4, a pressure difference switch 5, a bearing seat 6, a reciprocating screw 7, a sprocket unit, a strip nozzle 12, an energy storage unit and a pressure hose 16, wherein the energy storage unit is fixedly connected to the housing 1 and is located at the lower end of the housing 1, the number of the plate filter element 2 is two, the two plate filter elements 2 are respectively fixedly connected to the housing 1 and are respectively located inside the housing 1, and the two plate filter elements 2 are vertically installed in a V-shaped tilted manner, and the shaft The number of the bearing seats 6 is two, and the two bearing seats 6 are respectively fixedly connected to the housing 1 and are respectively embedded in the two sides of the housing 1. The two ends of the reciprocating screw rod 7 are respectively embedded in the corresponding bearing seats 6, and the reciprocating screw rod 7 is located inside the housing 1. The sprocket unit is arranged on the inner side of the housing 1, and one end of the sprocket unit is sleeved on the outer wall of the reciprocating screw rod 7. The strip nozzle 12 is adapted to the reciprocating screw rod 7, and the two ends of the pressure hose 16 are respectively connected to the strip nozzle 12 and the output end of the energy storage unit. The controller 4 is fixedly connected to the housing 1 and is located on the inner side of the housing 1. The pressure differential switch 5 is fixedly connected to the housing 1 and is located on the inner side of the housing 1. The number of the sealing members 3 is multiple groups. Each group of the sealing members 3 is respectively arranged on the circumference of the corresponding plate filter element 2 and is respectively located between the housing 1 and the plate filter element 2. The strip nozzle 12 is reciprocated through the pressure hose 16, the reciprocating screw rod 7 and the sprocket unit. The differential pressure switch starts the controller 4 in time, and the controller 4 uses the compressed air in the energy storage unit to The plate filter element 2 is subjected to a timed, inside-out pulse cleaning to clean the dust in the plate filter element 2. Each component is installed inside the housing 1, which can reduce the volume while strengthening the safety protection of the core components. The two plate filter elements 2 are installed vertically in a V shape, so that the dust blown out can fall freely by its own weight, so that the self-cleaning effect of the plate filter element 2 is better. The strip nozzle 12 only performs pulse online backblowing on 1 / 30 of the strip portion of each plate filter element 2, and the online backblowing does not affect the normal operation of the air-using equipment.

[0017] Furthermore, the sprocket unit includes a large sprocket 8, a chain 9, a small sprocket 10 and a DC motor 11, the large sprocket 8 is fixedly connected to the reciprocating screw rod 7 and is sleeved on the outer wall of the reciprocating screw rod 7, the small sprocket 10 is arranged on the inner side of the shell 1, the chain 9 is sleeved on the outer walls of the large sprocket 8 and the small sprocket 10, the DC motor 11 is arranged on the inner side of the shell 1, and the output end of the DC motor 11 is fixedly connected to the axis of the small sprocket 10.

[0018] Furthermore, the energy storage unit includes an accumulator 13, a pulse valve 14 and a fixed support 15. The number of the fixed supports 15 is multiple groups, and each group of the fixed supports 15 is fixedly connected to the shell 1 and is respectively located at the lower end of the shell 1. The accumulator 13 is fixedly connected to multiple groups of the fixed supports 15 and embedded in the multiple groups of the fixed supports 15. The pulse valve 14 is connected to the output end of the accumulator 13 and is located at one end of the accumulator 13. One end of the pressure hose 16 is connected to the strip nozzle 12, and the other end of the pressure hose 16 passes through the shell 1 and is connected to the output end of the pulse valve 14.

[0019] Furthermore, the large-flow, low-pressure-difference, small-volume self-cleaning air filter also includes an air intake rainproof canopy 17 , and the number of the air intake rainproof canopy 17 is multiple, and each of the air intake rainproof canopy 17 is fixedly connected to the shell 1 and is respectively located on both sides of the shell 1 .

[0020] Furthermore, the large-flow, low-pressure-difference, small-volume self-cleaning air filter further includes an air outlet 18 , which is connected to the housing 1 , and is disposed in any of three directions, namely, A, B, and C, of ​​the housing 1 .

[0021] Furthermore, according to the on-site climate and air quality, the pulse width T1, pulse interval T2 and pulse number N of the strip nozzle 12 and the pulse valve 14 are set using the output signal of the controller 4 .

[0022] In this embodiment, the plate filter element 2 is placed inside the housing 1, and the housing 1 and the plate filter element 2 are statically sealed by the sealing member 3. The two ends of the reciprocating screw rod 7 are supported by the bearing seat 6. The two ends of the reciprocating screw rod 7 rotate through the bearing seat 6. The reciprocating screw rod 7 is driven to rotate by the sprocket unit, driving the reset screw rod to rotate forward and reversely to achieve horizontal movement adjustment of the strip nozzle 12. In the sprocket unit, the DC motor 11 is energized, and then the output end of the DC motor 11 drives the small sprocket 10 to rotate. The small sprocket 10 drives the large sprocket 8 to rotate through the transmission of the chain 9, so as to achieve the purpose of driving the reciprocating screw rod 7 to rotate. The horizontal movement of the reciprocating screw rod 7 drives the strip nozzle 12 to move horizontally. The pulse valve is connected through the pressure-inducing hose 16. The accumulator 13 is installed and fixed by the fixed support 15 in the energy storage unit, and the pulse valve is connected through the pressure-inducing hose 16. The flush valve 14 is connected to the accumulator 13 and the pressure-leading hose 16. Under the control of the controller 4, the strip nozzle 12 can perform pulse cleaning of the V-shaped plate filter element 2 from the inside to the outside with compressed air in a timed manner, and the removed dust falls freely by gravity. During use, the output signal of the controller 4 can be adjusted according to different scenes and different climates and air qualities, and the pulse width T1, pulse interval T2 and pulse number N can be optimally set to extend the service life of the plate filter element 2. The air outlet 18 can be set in the three directions of A, B, and C of the housing 1 and can be arranged arbitrarily according to different needs. Under special circumstances, two air outlets 18 can be connected in the three directions of A, B, and C at the same time for exhaust, so that the equipment can achieve self-cleaning of the air filter element during operation, which greatly extends the service life of the air filter element. Compared with the prior art, it has the advantages of smaller volume, larger air intake, lower air intake pressure loss, higher filtration accuracy and better automation.

[0023] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the utility model.

Claims

1. A self-cleaning air filter with large flow, low pressure difference and small volume, characterized in that: It includes a shell, a plate filter element, a seal, a controller, a pressure differential switch, a bearing seat, a reciprocating screw, a sprocket unit, a strip nozzle, an energy storage unit and a pressure-leading hose. The energy storage unit is fixedly connected to the shell and is located at the lower end of the shell. There are two plate filter elements, which are fixedly connected to the shell and located inside the shell respectively, and the two plate filter elements are vertically installed in a V-shaped tilted manner. There are two bearing seats, which are fixedly connected to the shell and embedded in both sides of the shell respectively. The two ends of the reciprocating screw are embedded in the corresponding bearing seats respectively. The reciprocating screw is located inside the shell, the sprocket unit is arranged on the inner side of the shell, and one end of the sprocket unit is sleeved on the outer wall of the reciprocating screw, the strip nozzle and the reciprocating screw are adapted to each other, and the two ends of the pressure-inducing hose are respectively connected with the strip nozzle and the output end of the energy storage unit, the controller is fixedly connected to the shell and located on the inner side of the shell, the differential pressure switch is fixedly connected to the shell and located on the inner side of the shell, and the number of the sealing members is multiple groups, and each group of the sealing members is respectively arranged on the circumference of the corresponding plate filter element, and respectively located between the shell and the plate filter element.

2. A self-cleaning air filter with large flow, low pressure difference and small volume as claimed in claim 1, characterized in that: The sprocket unit includes a large sprocket, a chain, a small sprocket and a DC motor. The large sprocket is fixedly connected to the reciprocating screw and sleeved on the outer wall of the reciprocating screw. The small sprocket is arranged on the inner side of the shell. The chain is sleeved on the outer walls of the large sprocket and the small sprocket. The DC motor is arranged on the inner side of the shell, and the output end of the DC motor is fixedly connected to the axis of the small sprocket.

3. A self-cleaning air filter with large flow, low pressure difference and small volume as claimed in claim 2, characterized in that: The energy storage unit includes an accumulator, a pulse valve and a fixed support. The number of the fixed supports is multiple groups, each group of the fixed supports is fixedly connected to the shell and is respectively located at the lower end of the shell. The accumulator is fixedly connected to the multiple groups of the fixed supports and is embedded in the multiple groups of the fixed supports. The pulse valve is connected to the output end of the accumulator and is located at one end of the accumulator. One end of the pressure hose is connected to the strip nozzle, and the other end of the pressure hose passes through the shell and is connected to the output end of the pulse valve.

4. A self-cleaning air filter with large flow, low pressure difference and small volume as claimed in claim 3, characterized in that: The large-flow, low-pressure-difference, small-volume self-cleaning air filter further comprises an air intake rainproof shed, wherein the number of the air intake rainproof sheds is multiple, each of the air intake rainproof sheds is respectively fixedly connected to the shell and respectively located on both sides of the shell.

5. A self-cleaning air filter with large flow, low pressure difference and small volume as claimed in claim 4, characterized in that: The large-flow, low-pressure-difference, small-volume self-cleaning air filter further comprises an air outlet, which is communicated with the shell and is arranged in any of the three directions of A, B, and C of the shell.

6. A self-cleaning air filter with large flow, low pressure difference and small volume as claimed in claim 5, characterized in that: According to the climate and air quality on site, the pulse width T1, pulse interval T2 and pulse number N of the strip nozzle and the pulse valve are set using the output signal of the controller.

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