Air outlet purification device for screw air compressor

Abstract

The utility model relates to the technical field of air compressor air outlet purification, and discloses an air outlet purification device for a screw air compressor, which comprises an air compressor shell, a filter assembly is arranged at the top of the air compressor shell, a separation assembly is arranged on the right side of the top of the air compressor shell, and the filter assembly comprises a fine filtration cabin. And the fine filtration cabin is fixedly connected to the left side of the top of the air compressor shell. According to the air outlet purification device for the screw air compressor, by arranging the filter assembly, when the exhaust pressure of the air compressor shell is suddenly increased, airflow shocks wave-shaped filter plates to drive spring pieces to be compressed, meanwhile, the wave-shaped filter plates can deform towards the two sides to absorb impact force, the wave-shaped filter plates are prevented from being broken, and the service life of the air compressor is prolonged. After oil drops and water mist in air flow impact the wave-shaped filter screen, the oil drops and the water mist flow downwards into the oil collecting groove along corrugations of the wave-shaped filter plate due to gravity, when the filter screen deforms, impurities attached to the surface of the filter screen fall off due to vibration, blockage is reduced, filtering can be conducted, a certain self-cleaning function is achieved, and the use effect is good.

Description

Technical Field

[0001] This utility model relates to the field of air compressor exhaust purification technology, specifically an exhaust purification device for screw air compressors. Background Technology

[0002] Screw air compressors, as core power equipment in the industrial field, are widely used in industries such as machinery manufacturing, food processing, pharmaceutical production, and electronic semiconductors. They generate high-pressure air through screw engagement, providing power to pneumatic tools, automated production lines, and precision instruments. However, due to their structure and working principle, screw air compressors inevitably contain oil in the discharged compressed air during the compression process. If these contaminants directly enter downstream air-using systems, they can cause a series of problems, including equipment wear, product contamination, and process failure.

[0003] The prior art discloses an exhaust gas purification device for a screw air compressor, with publication number CN107917080B. The device includes a first purification pipe detachably connected to the exhaust pipe of the screw air compressor. Multiple impurity separation components are evenly spaced on the inner wall of the first purification pipe. Each impurity separation component includes an arc-shaped fan blade and a horn-shaped baffle plate for dispersing the airflow and separating impurities and moisture. The arc-shaped fan blade extends in the direction of the compressed gas flow. The horn-shaped baffle plate is coaxial with the first purification pipe, with the smaller diameter end of the horn-shaped baffle plate closer to the arc-shaped fan blade. Multiple drainage holes are provided on the bottom side wall of the first purification pipe, located between the arc-shaped fan blade and the horn-shaped baffle plate. A recovery pipe with a recovery chamber is detachably installed below the first purification pipe, and the recovery chamber communicates with the drainage holes through the drainage pipe.

[0004] The aforementioned exhaust air purification device for screw air compressors can absorb some impurities and moisture in the airflow after repeated impacts by adsorbing them onto the horn-shaped baffle plate, resulting in better airflow purification. However, the internal filter components of the aforementioned exhaust air purification device for screw air compressors cannot achieve self-cleaning, which leads to easy clogging of the internal filter components after long-term use, affecting normal operation and resulting in poor performance during use. This needs to be improved. Utility Model Content

[0005] The purpose of this invention is to provide an exhaust gas purification device for screw air compressors to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an air purification device for a screw air compressor, comprising an air compressor housing, a filter assembly disposed on the top of the air compressor housing, and a separation assembly disposed on the top right side of the air compressor housing.

[0007] The filtration assembly includes a fine filter chamber, which is fixedly connected to the top left side of the air compressor housing. An air outlet pipe is fixedly connected to the top of the fine filter chamber. A first inner arc-shaped plate is fixedly connected to the interior of the air outlet pipe near its top. A spring is fixedly connected to the bottom of the first inner arc-shaped plate. A second inner arc-shaped plate is fixedly connected to the bottom of the spring. A placement frame is fixedly connected to the bottom of the second inner arc-shaped plate. A rectangular frame is fixedly connected to the interior of the placement frame. A connecting column is fixedly connected to the front of the rectangular frame. A corrugated filter plate is fixedly connected to the surface of the connecting column. An elastic pad is fixedly connected to the left side of the interior of the rectangular frame and is connected to the left side of the corrugated filter plate. An oil collection trough is fixedly connected to the bottom of the fine filter chamber. A discharge box is fixedly connected to the bottom of the oil collection trough. A discharge pipe is fixedly connected to the left side of the discharge box, and a mechanical drain valve is installed inside the discharge pipe.

[0008] Preferably, the separation assembly includes a vertical cyclone separator, a connecting pipe, a spiral cylinder, a connecting pipe, a connecting tube, and a drain pipe. The connecting tube is fixedly connected to the surface of the air compressor housing, the vertical cyclone separator is fixedly connected to the top of the connecting tube, the connecting pipe is fixedly connected to the left side of the vertical cyclone separator, the left side of the connecting pipe is fixedly connected to the right side of the fine filter chamber, the connecting pipe is fixedly connected to the top of the vertical cyclone separator, and the spiral cylinder is fixedly connected to the right side of the vertical cyclone separator.

[0009] Preferably, the drain pipe is fixedly connected to the left side of the connecting cylinder, and the left side of the drain pipe is fixedly connected to the right side of the oil collection tank.

[0010] Preferably, the corrugated filter plate has a through groove on its front side, the diameter of which is adapted to the diameter of the connecting column. The through groove allows the connecting column to pass through for fixation, so that the corrugated filter plate can only deform laterally at both ends.

[0011] Preferably, a sealing gasket is fixedly connected inside the placement frame plate. The sealing gasket prevents oil and water from passing through the hollow space between the placement frame plate and the rectangular frame and being filtered out, thus ensuring the normal use of the device.

[0012] Preferably, the area of ​​the sealing gasket is equal to the difference in top area between the rectangular frame and the placement frame plate.

[0013] Preferably, the interior of the spiral cylinder is provided with a spiral guide plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This exhaust air purification device for screw air compressors is equipped with a filter assembly. When the exhaust pressure of the air compressor housing suddenly increases, the airflow impacts the corrugated filter plate, causing the spring components to compress. At the same time, the corrugated filter plate can deform to both sides to absorb the impact force, preventing the corrugated filter plate from breaking. After oil droplets and water mist in the airflow hit the corrugated filter screen, they flow down the corrugations of the corrugated filter plate due to gravity and into the oil collection groove. When the filter screen deforms, the impurities attached to the surface fall off due to vibration, reducing clogging. It can filter and has a certain self-cleaning function, with good performance.

[0016] This exhaust air purification device for screw air compressors features a separation component. During operation, a vertical cyclone separator and a spiral cylinder are connected in series via a connecting pipe on the right side of the fine filter chamber. Inside the spiral cylinder, a spiral guide plate is installed. The airflow rotates at high speed along the spiral guide plate, and oil and water are thrown towards the cylinder wall due to centrifugal force, flowing along the wall to the bottom of the cylinder, and then continuing to flow into the interior of the connecting cylinder. The oil and water are then transported to the discharge box through the drain pipe for secondary separation and filtration, ensuring separation quality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0018] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0019] Figure 3 This is a three-dimensional structural diagram of the filter assembly of this utility model;

[0020] Figure 4 This utility model Figure 3 Enlarged structural diagram at point B.

[0021] In the diagram: 1. Air compressor housing; 2. Filter assembly; 201. Fine filter chamber; 202. Air outlet pipe fitting; 203. First inner arc plate; 204. Spring component; 205. Second inner arc plate; 206. Placement frame plate; 207. Rectangular frame component; 208. Corrugated filter plate; 209. Connecting column component; 210. Elastic pad; 211. Oil collection tank; 212. Discharge box; 213. Discharge pipe; 214. Mechanical drain valve; 3. Separation assembly; 301. Vertical cyclone separator; 302. Connecting pipe; 303. Spiral cylinder; 304. Connecting pipe; 305. Connecting cylinder; 306. Drainage pipe fitting. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 The present invention provides the following technical solution:

[0024] An exhaust gas purification device for a screw air compressor includes an air compressor housing 1, a filter assembly 2 disposed on the top of the air compressor housing 1, and a separation assembly 3 disposed on the top right side of the air compressor housing 1.

[0025] The filter assembly 2 includes a fine filter chamber 201, which is fixedly connected to the top left side of the air compressor housing 1. An outlet pipe 202 is fixedly connected to the top of the fine filter chamber 201. A first inner arc-shaped plate 203 is fixedly connected to the interior of the outlet pipe 202 near its top. A spring 204 is fixedly connected to the bottom of the first inner arc-shaped plate 203. A second inner arc-shaped plate 205 is fixedly connected to the bottom of the spring 204. A placement frame plate 206 is fixedly connected to the bottom of the second inner arc-shaped plate 205. A rectangular frame 207 is fixedly connected to the interior of the placement frame plate 206. A connecting post 209 is fixedly connected to the front of the rectangular frame 207. A corrugated filter plate 208 is fixedly connected to the surface of the connecting post 209. An elastic pad 210 is fixedly connected to the left side of the interior of the rectangular frame 207 and is connected to the corrugated filter plate 208. On the left side, an oil collection tank 211 is fixedly connected to the bottom of the fine filtration chamber 201, and a discharge box 212 is fixedly connected to the bottom of the oil collection tank 211. A discharge pipe 213 is fixedly connected to the left side of the discharge box 212, and a mechanical drain valve 214 is installed inside the discharge pipe 213. A through groove is opened on the front of the corrugated filter plate 208. The diameter of the through groove is adapted to the diameter of the connecting column 209. The through groove allows the connecting column 209 to pass through for fixation, so that the corrugated filter plate 208 can only deform laterally at both ends. A sealing gasket is fixedly connected inside the placement frame plate 206. The sealing gasket prevents oil and water from passing through the hollow between the placement frame plate 206 and the rectangular frame 207 and being filtered, ensuring the normal use of the device. The area of ​​the sealing gasket is equal to the difference in top area between the rectangular frame 207 and the placement frame plate 206.

[0026] The separation assembly 3 includes a vertical cyclone separator 301, a connecting pipe 302, a spiral cylinder 303, a connecting pipe 304, a connecting cylinder 305, and a drain pipe 306. The connecting cylinder 305 is fixedly connected to the surface of the air compressor housing 1. The vertical cyclone separator 301 is fixedly connected to the top of the connecting cylinder 305. The connecting pipe 304 is fixedly connected to the left side of the vertical cyclone separator 301. The left side of the connecting pipe 304 is fixedly connected to the right side of the fine filter chamber 201. The connecting pipe 302 is fixedly connected to the top of the vertical cyclone separator 301. The spiral cylinder 303 is fixedly connected to the right side of the vertical cyclone separator 301. A spiral guide plate is provided inside the spiral cylinder 303. The drain pipe 306 is fixedly connected to the left side of the connecting cylinder 305. The left side of the drain pipe 306 is fixedly connected to the right side of the oil collection tank 211.

[0027] In use, a filter assembly is installed inside the fine filter chamber 201 and the air compressor housing 1. Inside, a corrugated filter plate 208 is installed. The surface of the corrugated filter plate 208 is coated with an oleophobic coating. When the exhaust pressure of the air compressor housing 1 suddenly increases, the airflow impacts the corrugated filter plate 208, causing the spring 204 to compress. Simultaneously, the corrugated filter plate 208 can deform to both sides to absorb the impact force, preventing it from breaking. The front of the corrugated filter plate 208 is fixed by connecting columns 209; only the two ends can deform laterally. After deformation, the elastic pad 210 is compressed, ensuring normal operation of the device. Oil droplets and water mist in the airflow impact the corrugated filter screen and, due to gravity, flow down the corrugations of the corrugated filter plate 208 into the oil collection groove 211. When the filter screen deforms, impurities adhering to its surface are dislodged due to vibration. The system features a dynamic detachment mechanism to reduce clogging, filtration capabilities, and a degree of self-cleaning. It delivers excellent performance. Oil is collected in the lower discharge box 212 and then discharged through the left-side discharge pipe 213 and mechanical drain valve 214, completing the separation process. A separation component 3 is located on the top right side of the air compressor housing 1. During operation, a vertical cyclone separator 301 and a spiral cylinder 303 are connected in series via a connecting pipe 304 on the right side of the fine filter chamber 201. A spiral guide plate is installed inside the spiral cylinder 303, causing the airflow to rotate at high speed along the guide plate. Oil and water are thrown towards the cylinder wall due to centrifugal force, flowing along the wall to the bottom of the cylinder, and then continuing into the connecting cylinder 305. The oil and water are then transported to the discharge box 212 via the drain pipe 306 for secondary separation and filtration, ensuring high-quality separation.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An exhaust gas purification device for a screw air compressor, comprising an air compressor housing (1), characterized in that: A filter assembly (2) is provided on the top of the air compressor housing (1), and a separation assembly (3) is provided on the right side of the top of the air compressor housing (1). The filter assembly (2) includes a fine filter chamber (201), which is fixedly connected to the top left side of the air compressor housing (1). An outlet pipe (202) is fixedly connected to the top of the fine filter chamber (201). A first inner arc plate (203) is fixedly connected to the inside of the outlet pipe (202) near its top. A spring (204) is fixedly connected to the bottom of the first inner arc plate (203). A second inner arc plate (205) is fixedly connected to the bottom of the spring (204). A placement frame plate (206) is fixedly connected to the bottom of the second inner arc plate (205). A rectangular frame is fixedly connected inside the placement frame plate (206). 207), the front of the rectangular frame (207) is fixedly connected to a connecting column (209), the surface of the connecting column (209) is fixedly connected to a corrugated filter plate (208), the left side of the inside of the rectangular frame (207) is fixedly connected to an elastic pad (210), the elastic pad (210) is connected to the left side of the corrugated filter plate (208), the bottom of the fine filtration chamber (201) is fixedly connected to an oil collection tank (211), the bottom of the oil collection tank (211) is fixedly connected to a discharge box (212). The left side of the discharge box (212) is fixedly connected to a discharge pipe (213), and a mechanical drain valve (214) is provided inside the discharge pipe (213).

2. The exhaust gas purification device for a screw air compressor according to claim 1, characterized in that: The separation assembly (3) includes a vertical cyclone separator (301), a connecting pipe (302), a spiral cylinder (303), a connecting pipe (304), a connecting cylinder (305), and a drain pipe (306). The connecting cylinder (305) is fixedly connected to the surface of the air compressor housing (1). The vertical cyclone separator (301) is fixedly connected to the top of the connecting cylinder (305). The connecting pipe (304) is fixedly connected to the left side of the vertical cyclone separator (301). The left side of the connecting pipe (304) is fixedly connected to the right side of the fine filter chamber (201). The connecting pipe (302) is fixedly connected to the top of the vertical cyclone separator (301). The spiral cylinder (303) is fixedly connected to the right side of the vertical cyclone separator (301).

3. The exhaust gas purification device for a screw air compressor according to claim 2, characterized in that: The drain pipe (306) is fixedly connected to the left side of the connecting cylinder (305), and the left side of the drain pipe (306) is fixedly connected to the right side of the oil collection tank (211).

4. The exhaust gas purification device for a screw air compressor according to claim 1, characterized in that: The corrugated filter plate (208) has a through groove on its front side, and the diameter of the through groove is adapted to the diameter of the connecting column (209).

5. The exhaust gas purification device for a screw air compressor according to claim 1, characterized in that: The internal fixed connection of the placement frame plate (206) is a sealing gasket.

6. The exhaust gas purification device for a screw air compressor according to claim 1, characterized in that: The area of ​​the sealing gasket is equal to the difference in top area between the rectangular frame (207) and the placement frame plate (206).

7. The exhaust gas purification device for a screw air compressor according to claim 2, characterized in that: The spiral cylinder (303) is equipped with a spiral guide plate inside.

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