A radial cyclone back-flushing filter element cleaning device

Abstract

A radial cyclone back-blowing filter element cleaning device belongs to the technical field of cleaners. The structure includes an air tank, a cleaner and a dust collector. The air tank, the cleaner and the dust collector are connected in sequence by pipelines. A main shaft is provided in the cleaner, an airway is provided in the center of the main shaft, blades are provided on the outer wall of the main shaft, a through hole is provided on the wall of the main shaft, one end of the main shaft is closed, and the other end is connected to the outlet of the air tank through a pipeline. In the process of backwashing the filter element, the filter element is blown by high-speed gas, and the cleaning efficiency is high. In short, the present invention is suitable for industrial production.

Description

Technical Field

[0001] The invention relates to a filter element cleaning device, in particular to a pre-filter element cleaning device suitable for an air compressor, belonging to the technical field of cleaners. Background Art

[0002] Air compressors are divided into centrifugal compressors and axial compressors. In order to increase the service life of the compressor rotor, a back-blowing air filter is installed in front of the air compressor so that the dust particles contained in the air entering the compressor are controlled within 3μm to ensure the clean working environment of the air compressor rotor. The filter consumes a large number of filter elements during use. As the main consumables of the air compressor filter device, the filter element needs to be replaced frequently, which undoubtedly increases the production cost of the enterprise. In the prior art, when cleaning the used filter element for secondary use, gas direct blowing is generally used, from inside to outside or from outside to inside to clean the filter element. The thickness of the air filter element is generally 100mm. When using direct blowing to clean the filter element, the dust that has been adhered to the outside of the filter element for a long time cannot be removed due to insufficient gas pressure. Summary of the invention

[0003] In view of the defects of the prior art, the present invention provides a radial cyclone back-flushing filter element cleaning device, which can remove dust particles on the filter element from the inside to the outside.

[0004] The technical problem of the present invention is solved by the following technical solutions:

[0005] A radial cyclone back-blowing filter element cleaning device comprises an air tank, a cleaner and a dust collector, wherein the air tank, the cleaner and the dust collector are connected in sequence by pipelines, a main shaft is arranged in the cleaner, an air passage is arranged in the center of the main shaft, blades are arranged on the outer wall of the main shaft, air flow passages are arranged in the blades, a through hole is arranged on the wall of the main shaft, one end of the main shaft is closed, and the other end is connected to the outlet of the air tank through a pipeline, a filter element seat is arranged at the bottom of the main shaft, a filter element is arranged on the filter element seat and surrounds the main shaft, and a positioning ring is arranged on the filter element seat.

[0006] In the radial cyclone back-flushing filter element cleaning device, the blades are arranged in 3-8 groups and are evenly distributed on the outer wall of the main shaft. The cross-sectional area of ​​the air flow channel in the blades gradually decreases, and the width of the nozzle at the nozzle is 2-3 mm.

[0007] In the radial cyclone back-flushing filter element cleaning device, a bearing is arranged between the filter element seat and the main shaft, the inner ring of the bearing is fixedly connected to the main shaft, and the outer ring of the bearing is fixedly connected to the filter element seat.

[0008] The above-mentioned radial cyclone back-blowing filter element cleaning device has a vertical pole on the filter element seat, a push rod is horizontally provided on the top of the vertical pole, a fixed clamp is set at the center of the push rod, the fixed clamp includes an upper clamp and a lower clamp, the upper clamp is rotatably connected to the lower clamp, the upper clamp is fixed at the center of the vertical pole, and the lower clamp is interference fit at the center of the top of the filter element.

[0009] In the radial cyclone back-flushing filter element cleaning device, two bearings are arranged in the vertical direction, and the two bearings are connected by a positioning plate.

[0010] In the radial cyclone back-flushing filter element cleaning device, the bottom of the main shaft is connected to the pipeline and fixed with a nut.

[0011] The present invention has the following advantages:

[0012] The present invention back-blows the filter element by setting a back-blow device. After the filter element is cleaned, it can be reused, thereby saving costs. The back-blow device includes a main shaft, an airway is provided in the main shaft, and a through hole is provided on the main shaft wall. After the gas enters the airway in the main shaft, it is blown out through the through hole, passes through the airflow channel in the blade, and finally blows out through the nozzle, and the direction of the gas blowing is along the circumferential tangent of the airflow channel. A part of the blown gas acts on the inner wall of the filter element, and the pressure energy is converted into kinetic energy to blow the filter element to rotate, and a part of the gas passes through the filter element to blow away the dust particles attached to the outside of the filter element, thereby achieving the purpose of cleaning the filter element. After the gas is blown out through the nozzle, the flow rate can reach the speed of sound, and the high-speed gas blows the filter element, and the cleaning efficiency is high. The bottom of the filter element is fixed on the filter element seat by a positioning ring, and the top of the filter element is fixed on the top rod by a fixing clamp. When the filter element is back-blowing, its vertical position is fixed during the rotation process, and the dust particles on the filter element are cleaned thoroughly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the present invention;

[0014] Figure 2 This is a schematic diagram of the blade structure of the present invention;

[0015] Figure 3 A schematic diagram of the structure of the fixing card of the present invention.

[0016] 1. Gas tank, 2. Cleaner, 3. Dust collector, 4. Vertical pole, 5. Filter element, 6. Fixing clamp, 6-1. Upper clamp, 6-2. Lower clamp, 7. Pipeline, 8. Main shaft, 9. Blade, 10. Bearing, 11. Through hole, 12. Filter element seat, 13. Push rod, 14. Positioning ring, 15. Airway, 16. Positioning plate, 17. Nut, 18. Nozzle, 19. Air flow channel. DETAILED DESCRIPTION

[0017] See attached Figure 1The present invention includes a gas storage tank 1, a cleaner 2 and a dust collector 3, wherein the gas storage tank 1, the cleaner 2 and the dust collector 3 are connected in sequence by a pipe 7, a main shaft 8 is provided in the cleaner 2, an air passage 15 is provided in the center of the main shaft 8, blades 9 are provided on the outer wall of the main shaft 8, an air flow passage 19 is provided in the blades 9, a through hole 11 is provided on the wall of the main shaft 8, one end of the main shaft 8 is closed, and the other end is connected to the outlet of the gas storage tank 1 through the pipe 7, and the gas in the gas storage tank 1 is blown into the air passage 15 in the main shaft 8 through the pipe 7 and blown out through the through hole 11. The blades 9 are provided with an air flow passage 19, and after the gas is blown out through the air flow passage 19, a filter element seat 12 is provided at the bottom of the main shaft 8, and a filter element 5 is arranged on the filter element seat 12 and surrounds the main shaft 8, and the gas back-blows the filter element 5 from the inside to the outside, thereby cleaning the filter element 5.

[0018] The blades 9 are arranged in 3-8 groups, evenly distributed on the outer wall of the main shaft 8, and an airflow channel 19 is arranged inside the blades 9. The airflow channel 19 is arc-shaped, and the transverse section of the airflow channel 19 is a curved arc. The cross-sectional area of ​​the airflow channel 19 gradually decreases, and the airflow channel 19 becomes narrower and narrower until the width of the nozzle 18 at the nozzle is 1-2 mm. A through hole 11 is arranged at the air inlet of each airflow channel 19, and the through hole 11 is the same width as the air inlet of the airflow channel 19. No through hole 11 is arranged on the outside of the blades 9. The gas can only be blown out from the nozzle.

[0019] The gas pressure of the gas in the gas storage tank 1 is 0.4-0.8 MPa. After the gas is blown out of the nozzle, the gas flow rate is accelerated, and its flow rate can reach the speed of sound 340 m / s. After blowing out of the nozzle 18, the direction of the gas blowing is along the circumferential tangent direction of the center line of the air flow channel 19. The distance between the nozzle 18 and the inner wall of the filter element 5 is 3-5 mm. The distance is very short, and the pressure and flow rate of the gas are almost lossless. When the gas acts on the inner wall of the filter element 5, it can still reach the speed of sound. Since the nozzle is a straight line in the vertical direction, the gas forms several rectangular gas columns and blows on the inner wall of the filter element. The area ratio of the gas acting on the inner wall of the filter element 5 is very small. Part of the gas acts on the inner wall of the filter element 5, and the pressure energy is converted into kinetic energy to blow the filter element 5 to rotate. Part of the gas passes through the filter element 5 to remove the dust particles attached to the filter element 5, thereby achieving the purpose of cleaning the filter element.

[0020] A bearing 10 is arranged between the filter element seat 12 and the main shaft 8, the inner ring of the bearing 10 is fixedly connected to the main shaft 8, and the outer ring of the bearing 10 is fixedly connected to the filter element seat 12. The main shaft 8 is fixed in position, and the filter element seat 12 rotates.

[0021] The filter element seat 12 is provided with a positioning ring 14. When in use, the filter element 5 is placed on the filter element seat 12, and the inner wall of the filter element 5 is stuck on the positioning ring 14. The filter element 5 can rotate freely with the filter element seat 12, and the gas is blown out through the blade nozzle to form a rotating airflow, which blows on the filter element 5, and the filter element 5 rotates, and the gas can make a circular motion with the rotation of the filter element. The gas blows the dust particles in the filter element 5 to reduce the concentration, and the high-speed airflow removes the dust from the inside of the filter element to the outside, so as to achieve the purpose of removing the dust particles attached to the filter element 5.

[0022] The filter element seat 12 is provided with a vertical rod 4, a top rod 13 is horizontally provided on the top of the vertical rod 4, and a fixing clamp 6 is provided at the center of the top rod 13. The fixing clamp 6 includes an upper clamp 6-1 and a lower clamp 6-2, the upper clamp 6-1 and the lower clamp 6-2 are rotatably connected, the upper clamp 6-1 is fixed at the center of the vertical rod 4, and the lower clamp 6-2 is interference-fitted at the top center of the filter element 5. In this way, the upper part of the filter element 5 is fixed by the fixing clamp 6, and the lower part is fixed by the positioning ring 14, and the position of the filter element 5 in the vertical direction remains unchanged during the backwashing process.

[0023] Two bearings 10 are arranged in the vertical direction, and the two bearings 10 are connected by a positioning plate 16. The two bearings provide two-point support for the main shaft, and the main shaft is more stable. The bottom of the main shaft 8 is connected to the pipe 7 and fixed with a nut 17.

Claims

1. A radial cyclone back-flushing filter element cleaning device, characterized in that: The invention comprises an air storage tank (1), a cleaner (2) and a dust collector (3), wherein the air storage tank (1), the cleaner (2) and the dust collector (3) are connected in sequence by a pipeline (7); a main shaft (8) is provided in the cleaner (2); an air passage (15) is provided at the center of the main shaft (8); blades (9) are provided on the outer wall of the main shaft (8); an air flow passage (19) is provided in the blades (9); a through hole (11) is provided on the wall of the main shaft (8); one end of the main shaft (8) is closed; the other end is connected to the outlet of the air storage tank (1) via the pipeline (7); a filter element seat (12) is provided at the bottom of the main shaft (8); a filter element (5) is arranged on the filter element seat (12) and surrounds the main shaft (8); a positioning ring (14) is provided on the filter element seat (12); The blades (9) are arranged in 3 to 8 groups and are evenly distributed on the outer wall of the main shaft (8); the cross-sectional area of ​​the airflow channel (19) in the blades (9) gradually decreases; the airflow channel (19) is arc-shaped; the transverse section of the airflow channel (19) is a curved arc; the airflow channel (19) becomes narrower and narrower, and the width of the nozzle (18) at the nozzle is 1 to 2 mm; a through hole (11) is arranged at the air inlet of each airflow channel (19), and the through hole (11) is the same width as the air inlet of the airflow channel (19); The filter element seat (12) is provided with a vertical rod (4), a top rod (13) is horizontally provided on the top of the vertical rod (4), a fixed clamp (6) is provided at the center of the top rod (13), the fixed clamp (6) comprises an upper clamp (6-1) and a lower clamp (6-2), the upper clamp (6-1) and the lower clamp (6-2) are rotatably connected, the upper clamp (6-1) is fixed at the center of the vertical rod (4), and the lower clamp (6-2) is interference-fitted at the center of the top of the filter element (5).

2. A radial cyclone back-flushing filter element cleaning device according to claim 1, characterized in that: A bearing (10) is arranged between the filter element seat (12) and the main shaft (8); the inner ring of the bearing (10) is fixedly connected to the main shaft (8), and the outer ring of the bearing (10) is fixedly connected to the filter element seat (12).

3. A radial cyclone back-flushing filter element cleaning device according to claim 2, characterized in that: Two bearings (10) are arranged in the vertical direction, and the two bearings (10) are connected by a positioning plate (16).

4. A radial cyclone back-flushing filter element cleaning device according to claim 1, characterized in that: The bottom of the main shaft (8) is connected to the pipe (7) and fixed with a nut (17).

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