Fine aluminum powder filtering device for compressor air inlet pipeline

Abstract

The utility model discloses a kind of microfine aluminium powder filtering devices of compressor air inlet pipeline, including air inlet pipe and filter, filter includes shell, top cover and cone bucket, the bottom of cone bucket is provided with discharge pipe, annular base is fixedly installed in the upper portion of shell, annular bottom is detachably installed with filter element, 2~3 pieces of cleaning plate are evenly arranged on the outside of filter element, bristle that is in sliding contact with filter element is provided on the cleaning plate of the side close to filter element, the upper end of cleaning plate is slidably connected with annular base, the lower end of cleaning plate is provided with driving mechanism that is transmission connection therewith, discharge pipe is provided on the shell above filter element, air inlet pipe is located on the shell below filter element, spoiler and buffer assembly are sequentially provided in air inlet pipe along the direction of airflow flow. The device not only can play better filtering effect, and can clean the outer wall of filter element, prevent filter element from being blocked, can further improve filtering efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of metal powder preparation and production technology, specifically relating to a micro-aluminum powder filtration device for a compressor intake pipe. Background Technology

[0002] Nitrogen-atomized aluminum powder is a metal powder produced by atomizing aluminum ingots with nitrogen. The production process of nitrogen-atomized aluminum powder mainly includes aluminum ingot melting, atomization powder making, aluminum powder grading and packaging. Atomization powder making involves mixing liquid aluminum with nitrogen through an atomizing nozzle and spraying it out to form spherical particles. This process requires controlling the nitrogen pressure and nozzle design to ensure particle uniformity. In the production process of nitrogen-atomized aluminum powder, to ensure the production pressure, a nitrogen compressor is generally used to pressurize the nitrogen before it enters the atomizing device for powder production. Currently, to save production costs, the nitrogen discharged from the atomizing device needs to be compressed again by the nitrogen compressor and returned to the atomizing device for recycling. Because the nitrogen discharged from the atomizing device still has a certain pressure, it carries a certain amount of fine aluminum powder. After the fine aluminum powder enters the compressor with the nitrogen, it is affected by oil and gas and will adhere to the narrow parts of the compressor's nitrogen passage, such as the cooler tubes or the gap between the cylinder liner and the piston. This can cause the compressor to malfunction and fail to operate normally. Therefore, this part of the nitrogen needs to be filtered before entering the compressor. Therefore, it is objectively necessary to develop a fine aluminum powder filtration device for the compressor intake pipe with a reasonable structural design, convenient use, and significant filtration efficiency. Summary of the Invention

[0003] The purpose of this utility model is to provide a micro-aluminum powder filtration device for compressor intake pipes that has a reasonable structural design, is easy to use, and has significant filtration efficiency.

[0004] The purpose of this utility model is achieved as follows: It includes an air inlet pipe and a filter connected to the air inlet pipe. The filter includes a housing, a top cover, and a conical hopper. The top cover is detachably mounted on the top of the housing via a flange assembly. The conical hopper is fixedly mounted on the bottom of the housing. A discharge pipe is provided at the bottom of the conical hopper. A support frame is installed below the conical hopper. An annular base is fixedly mounted on the upper part of the housing. A filter element is detachably mounted on the annular base. Two to three cleaning plates are evenly distributed on the outer side of the filter element. Bristles that slide in contact with the filter element are provided on the cleaning plate near the filter element. The upper end of the cleaning plate is slidably connected to the annular base. A drive mechanism that is drively connected to the lower end of the cleaning plate is provided. The drive mechanism is mounted on the support frame. An exhaust pipe is provided on the housing above the filter element. The air inlet pipe is located on the housing below the filter element. A baffle plate and a buffer assembly are sequentially arranged inside the air inlet pipe along the airflow direction. Multiple baffle holes are evenly distributed on the baffle plate.

[0005] The advantages of this device are as follows: First, a filter is installed at the front end of the compressor. The suspended filter element inside the filter can thoroughly filter the fine aluminum powder in the nitrogen gas flow, achieving a good filtration effect. A cleaning plate is installed on the outside of the filter element. If the outside of the filter element becomes clogged, the drive mechanism can drive the cleaning plate to rotate. The cleaning plate, along with the brush bristles, can clean the outer wall of the filter element, preventing clogging and maintaining its permeability for a long time, further improving filtration efficiency. Second, a baffle plate and buffer assembly are installed inside the inlet pipe. The baffle plate can change the flow rate and direction of the nitrogen gas flow, while the buffer assembly can further slow down the flow rate and reduce the pressure of the nitrogen gas flow, protecting the filter element and preventing the nitrogen gas flow from directly contacting the filter element inside the housing. The baffle plate and buffer assembly slow down the flow rate of the nitrogen gas flow, allowing it to fully contact the filter element, further improving the nitrogen filtration effect. This device has the advantages of reasonable structure, convenient use, and significant filtration effect, and is easy to promote and use. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0007] Figure 2 This is a schematic diagram of the filter element in this utility model;

[0008] In the diagram: 1-Inlet pipe, 2-Shell, 3-Top cover, 4-Conical hopper, 5-Discharge pipe, 6-Support frame, 7-Annular base, 8-Filter element, 81-Lower support ring plate, 82-Upper support ring plate, 83-First filter cylinder, 84-Second filter cylinder, 85-Third filter cylinder, 86-First flexible filter layer, 87-Second flexible filter layer, 88-Lower end cover, 89-Upper end cover, 810-Strip through hole, 811-Connecting plate, 812-Upper sealing gasket, 813-Lower sealing gasket, 9-Cleaning plate, 10-Brush bristles, 11-Exhaust pipe, 12-Break plate, 13-Guide slider, 14-Drive motor, 15-Transmission shaft, 16-Base plate, 17-Crossbar, 18-Connecting rod, 19-Discharge pipe, 20-Buffer plate, 21-Spring, 22-Sight glass. Detailed Implementation

[0009] The present invention will be further described below with reference to the accompanying drawings, but this description is not intended to limit the present invention in any way. Any changes or improvements made based on the teachings of the present invention shall fall within the protection scope of the present invention.

[0010] like Figures 1-2As shown, this utility model includes an air inlet pipe 1 and a filter connected to the air inlet pipe 1. The filter includes a housing 2, a top cover 3, and a conical hopper 4. The top cover 3 is detachably installed on the top of the housing 2 via a flange assembly. The top cover 3 is detachably connected to the housing 2 to facilitate the replacement of the filter element 8. The conical hopper 4 is fixedly installed at the bottom of the housing 2. A discharge pipe 5 is provided at the bottom of the conical hopper 4. A support frame 6 is installed below the conical hopper 4. An annular base 7 is fixedly installed in the upper part of the housing 2. The filter element 8 is detachably installed on the annular base 7. Two evenly distributed fins are provided on the outer side of the filter element 8. ~3 cleaning plates 9, with bristles 10 on the cleaning plate 9 near the filter element 8 that slide in contact with the filter element 8. The upper end of the cleaning plate 9 is slidably connected to the annular base 7, and the lower end of the cleaning plate 9 is provided with a drive mechanism that is connected to it. The drive mechanism can drive the cleaning plate 9 to rotate. The drive mechanism is mounted on the support frame 6. An exhaust pipe 11 is provided on the housing 2 above the filter element 8. The air inlet pipe 1 is located on the housing 2 below the filter element. A baffle 12 and a buffer assembly are arranged sequentially in the air inlet pipe 1 along the airflow direction. Multiple baffle holes are evenly distributed on the baffle 12.

[0011] The working process of this device is as follows: Nitrogen gas carrying fine aluminum powder enters the inlet pipe 1. Upon passing the baffle 12, its velocity decreases due to the baffle 12. The nitrogen gas continues to flow through the baffle holes. When it reaches the buffer assembly, the buffer assembly further slows down the nitrogen gas flow and reduces its pressure, preventing the nitrogen gas from directly contacting the filter element 8 inside the housing 2. This protects the filter element from damage caused by airflow impact. After being buffered by the buffer assembly, the gas enters the housing 2 and is distributed within it. Because the housing 2 contains the filter element 8, the nitrogen gas carrying fine aluminum powder is dispersed during its upward flow. After the fine aluminum powder is intercepted by the filter element 8, it continuously collides with the inner wall of the housing 2 and falls down along the inner wall of the housing 2, entering the cone hopper 4 and then being discharged from the discharge pipe 5. Meanwhile, the nitrogen gas flow enters the filter element 8 and flows out from the top of the filter element 8, and then exits the housing through the exhaust pipe 11. After the filter element 8 has been used for a period of time, fine aluminum powder will clog it. At this time, the drive mechanism is turned on, and the drive mechanism drives the cleaning plate 9 to rotate. During the rotation of the cleaning plate 9, the bristles 10 can clean the filter element 8, preventing the filter element 8 from clogging and maintaining the permeability of the filter element 8 for a long time and efficiency, further improving the nitrogen filtration efficiency.

[0012] Furthermore, the filter element 8 includes an upper support ring plate 82 and a lower support ring plate 81 arranged at intervals. A first filter cartridge 83, a second filter cartridge 84, and a third filter cartridge 85 are coaxially mounted between the upper support ring plate 82 and the lower support ring plate 81 from the outside to the inside. The diameter of the filter holes on the first filter cartridge 83, the second filter cartridge 84, and the third filter cartridge 85 gradually decreases. The first filter cartridge 83, the second filter cartridge 84, and the third filter cartridge 85 can be made of nanofiber material or metallic material. A first flexible filter layer 86 is filled between the first filter cartridge 83 and the second filter cartridge 84, and a second flexible filter layer 87 is filled between the second filter cartridge 84 and the third filter cartridge 85. The first flexible filter layer 86 and the second flexible filter layer 87 can be made of filter paper, non-woven fabric, or other materials used in the prior art. The lower support ring plate 81 is movably installed inside the lower end cover 88, and the outer side of the lower end of the first filter cartridge 83 is threadedly connected to the inner side of the lower end cover 88. The upper support ring plate 81... The support ring plate 82 is movably installed inside the upper end cover 89, and the outer side of the upper end of the first filter cylinder 83 is threadedly connected to the inner side of the upper end cover 89. The first filter cylinder 83 is connected to the upper end cover 88 and the lower end cover 89 by a threaded connection, which facilitates the disassembly of the filter element 8 and the cleaning of the inside of the filter element 8. Multiple strip-shaped through holes 810 are evenly distributed around the circumference of the upper end cover 89 inside the third filter cylinder 85. The upper end cover 89 is inserted into the annular base 7. A connecting plate 811 is provided on the outer side of the upper end cover 89. The connecting plate 811 is fixedly connected to the annular base 7 by multiple fastening screws. The first filter cylinder 83, the first flexible filter layer 86, the second filter cylinder 84, the second flexible filter layer 87 and the second filter cylinder 86 arranged in sequence can filter the fine aluminum powder carried in the nitrogen gas flow multiple times. After multiple filtrations, the fine aluminum powder in the nitrogen gas flow can be completely separated, reducing the dust content of the nitrogen gas flow and ensuring the stable operation of the compressor.

[0013] Preferably, in order to improve the sealing of the connection between the first filter cartridge 83 and the upper end cover 89 and the lower end cover 88, and to improve the filtration effect, an upper sealing gasket 812 is provided between the upper support ring plate 82 and the upper end cover 89, and a lower sealing gasket 813 is provided between the lower support ring plate 81 and the lower end cover 88.

[0014] Furthermore, in order to improve the connection stability of the sweeping plate 9, an annular guide groove is machined on the bottom surface of the annular base 7, and a guide slider 13 is installed on the top of the sweeping plate 9. The guide slider 13 is slidably installed in the guide groove. During the rotation of the sweeping plate 9, the guide slider 13 moves along the guide groove, which can significantly improve the connection stability between the sweeping plate 9 and the annular base 7.

[0015] Furthermore, the drive mechanism includes a drive motor 14 and a transmission shaft 15. The drive motor 14 is a structure used in the prior art, and finished products are directly purchased according to the power required. A base plate 16 is installed at the bottom of the discharge pipe 5. The drive motor 14 is mounted on the support frame 6. The lower end of the transmission shaft 15 is connected to the output shaft of the drive motor 14. The upper end of the transmission shaft 15 passes through the base plate 16 and the discharge pipe 5 in sequence and extends into the cone hopper 4. Multiple crossbars 17 matching the cleaning plate 9 are installed on the upper end of the transmission shaft 15. The ends of the crossbars 17 are fixedly connected to the lower end of the cleaning plate 9 through connecting rods 18. A discharge pipe 19 is provided on one side of the discharge pipe 5. A control valve is provided on the discharge pipe 19. When the filter element 8 needs to be cleaned, the drive motor 14 is turned on, and the drive motor 14 drives the transmission shaft 15 to drive the filter element 8. The crossbar 17 rotates, which in turn drives the cleaning plate 9 and brush 10 to rotate via the connecting rod 18. The rotating brush 10 cleans the surface of the filter element 8. To facilitate the collection of fine aluminum powder from the filter, the control valve can be opened while cleaning the filter element 8, allowing the fine aluminum powder in the cone 4 to be discharged from the discharge pipe 19. Preferably, to efficiently discharge the fine aluminum powder from the cone 4 from the discharge pipe 19, a spiral blade is installed on the drive shaft 15 located in the discharge pipe 5. The top surface of the base plate 16 is set as an inclined structure, and the discharge pipe 19 is located on the lower side of the inclined surface. After the fine aluminum powder in the cone 4 enters the discharge pipe 5, it can be quickly discharged from the discharge pipe 19 by the action of the spiral blade. After the discharge is completed, the control valve is closed. After the cleaning plate 8 has finished cleaning the filter element 8, the drive motor 14 can be turned off.

[0016] Furthermore, the buffer assembly includes a buffer plate 20 and a spring 21. A support is installed in the upper part of the air inlet pipe 1. One end of the buffer plate 20 is rotatably mounted on the support via a short shaft, and the other end of the buffer plate 20 is suspended. One end of the spring 21 is connected to the bottom of the buffer plate 20, and the other end is connected to the bottom of the air inlet pipe 1. After the nitrogen gas flows into the air inlet pipe 1, it will come into contact with the buffer plate 20. The buffer plate 20, under the action of the spring 21, can buffer the nitrogen gas flow, reduce the flow rate of the nitrogen gas flow, and change the direction of the nitrogen gas flow, so that the nitrogen gas flow flows downward as much as possible after entering the housing 2, avoiding direct impact on the filter element 8. This can protect the filter element 8 and extend the service life of the filter element 8.

[0017] To facilitate observation of the operation inside the housing 2, a sight glass 22 is installed on the housing 2.

[0018] In order to improve the effectiveness of the spoiler 12, the spoiler holes on the spoiler 12 are gradually tilted downward along the direction of airflow.

Claims

1. A micro-aluminum powder filtration device for a compressor intake pipe, characterized in that: The filter includes an intake pipe (1) and a filter connected to the intake pipe (1). The filter includes a housing (2), a top cover (3), and a cone (4). The top cover (3) is detachably mounted on the top of the housing (2) via a flange assembly. The cone (4) is fixedly mounted on the bottom of the housing (2). A discharge pipe (5) is provided at the bottom of the cone (4). A support frame (6) is installed below the cone (4). An annular base (7) is fixedly mounted on the upper part of the housing (2). A filter element (8) is detachably mounted on the annular base (7). Two to three cleaning plates (9) are evenly distributed on the outer side of the filter element (8). A cleaning plate (9) near the filter element (8) is provided with bristles (10) that slide in contact with the filter element (8). The upper end of the cleaning plate (9) is slidably connected to the annular base (7). The lower end of the cleaning plate (9) is provided with a drive mechanism that is connected to it. The drive mechanism is mounted on the support frame (6). An exhaust pipe (11) is provided on the housing (2) above the filter element (8). The air inlet pipe (1) is located on the housing (2) below the filter element. A baffle plate (12) and a buffer assembly are arranged sequentially in the air inlet pipe (1) along the airflow direction. Multiple baffle holes are evenly distributed on the baffle plate (12).

2. The micro-aluminum powder filtration device for a compressor intake pipe according to claim 1, characterized in that: The filter element (8) includes an upper support ring plate (82) and a lower support ring plate (81) arranged at intervals. A first filter cylinder (83), a second filter cylinder (84), and a third filter cylinder (85) are coaxially mounted between the upper support ring plate (82) and the lower support ring plate (81) from the outside to the inside. The diameter of the filter holes on the first filter cylinder (83), the second filter cylinder (84), and the third filter cylinder (85) gradually decreases. A first flexible filter layer (86) is filled between the first filter cylinder (83) and the second filter cylinder (84), and a second flexible filter layer (87) is filled between the second filter cylinder (84) and the third filter cylinder (85). The lower support ring... The plate (81) is movably installed inside the lower end cover (88), and the outer side of the lower end of the first filter cylinder (83) is threadedly connected to the inner side of the lower end cover (88). The upper support ring plate (82) is movably installed inside the upper end cover (89), and the outer side of the upper end of the first filter cylinder (83) is threadedly connected to the inner side of the upper end cover (89). Multiple strip-shaped through holes (810) are evenly distributed around the circumference of the upper end cover (89) inside the third filter cylinder (85). The upper end cover (89) is inserted into the annular base (7). A connecting plate (811) is provided on the outer side of the upper end cover (89). The connecting plate (811) is fixedly connected to the annular base (7) by multiple fastening screws.

3. The micro-aluminum powder filtration device for a compressor intake pipe according to claim 2, characterized in that: An upper sealing gasket (812) is provided between the upper support ring plate (82) and the upper end cover (89), and a lower sealing gasket (813) is provided between the lower support ring plate (81) and the lower end cover (88).

4. The micro-aluminum powder filtration device for a compressor intake pipe according to claim 1, characterized in that: The bottom surface of the annular base (7) is machined with an annular guide groove, and the top of the cleaning plate (9) is equipped with a guide slider (13), which is slidably installed in the guide groove.

5. A micro-aluminum powder filtration device for a compressor intake pipe according to claim 1, characterized in that: The drive mechanism includes a drive motor (14) and a transmission shaft (15). A base plate (16) is installed at the bottom of the discharge pipe (5). The drive motor (14) is mounted on a support frame (6). The lower end of the transmission shaft (15) is connected to the output shaft of the drive motor (14). The upper end of the transmission shaft (15) passes through the base plate (16) and the discharge pipe (5) in sequence and extends into the cone hopper (4). Multiple crossbars (17) matching the cleaning plate (9) are installed at the upper end of the transmission shaft (15). The ends of the crossbars (17) are fixedly connected to the lower end of the cleaning plate (9) through connecting rods (18). A discharge pipe (19) is provided on one side of the discharge pipe (5). A control valve is provided on the discharge pipe (19).

6. The micro-aluminum powder filtration device for a compressor intake pipe according to claim 5, characterized in that: A helical blade is installed on the drive shaft (15) located inside the discharge pipe (5), the top surface of the base plate (16) is set as an inclined structure, and the discharge pipe (19) is located on the lower side of the inclined surface.

7. A micro-aluminum powder filtration device for a compressor intake pipe according to claim 1, characterized in that: The buffer assembly includes a buffer plate (20) and a spring (21). A support is installed in the upper part of the air intake pipe (1). One end of the buffer plate (20) is rotatably mounted on the support through a short shaft. The other end of the buffer plate (20) is suspended. One end of the spring (21) is connected to the bottom of the buffer plate (20), and the other end is connected to the bottom of the air intake pipe (1).

8. A micro-aluminum powder filtration device for a compressor intake pipe according to claim 1, characterized in that: A sight glass (22) is mounted on the housing (2).

9. A micro-aluminum powder filtration device for a compressor intake pipe according to claim 1, characterized in that: The turbulence holes on the turbulence plate (12) gradually tilt downwards along the direction of airflow.

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