A screw air compressor with filter membrane convenient to replace

Abstract

The utility model discloses a screw air compressor convenient to change filter membrane, including oil gas separation jar, apron, filter core, pre -tightening subassembly and locking pin, the top of oil gas separation jar is provided with the access hole, the inside of access hole is provided with the loop, the lateral wall of access hole is provided with the exhaust pipe, the inside of apron is provided with the airway, the bottom of apron is provided with the intubation, the bottom of apron is provided with the air outlet that cooperates with exhaust pipe, the top of filter core is provided with the flange that is in the top of loop, the top of filter core is provided with the air outlet joint, the air outlet joint inner wall and intubation outer wall interference fit, pre -tightening subassembly supports at the bottom of filter core, locking pin locks apron with access hole, the utility model discloses, and it is convenient to open to take out filter core, and maintenance personnel need not enter the overhaul.

Description

Technical Field

[0001] This utility model relates to the field of air compressor technology, specifically to a screw air compressor with an easy-to-replace filter membrane. Background Technology

[0002] Screw air compressors are widely used power equipment in modern industry. Their working principle involves compressing air using a screw compressor. The compressed oil-air mixture then enters an oil-air separator, where it passes through an "oil-air separator filter element" (whose core function is a special filter membrane) to separate the lubricating oil from the compressed air.

[0003] Currently, most screw air compressors have their oil-gas separator filter elements directly installed inside the oil-gas separator tank. When the filter membrane reaches the end of its service life and needs replacement, the lubricating oil must first be drained, and then multiple pipes and flanges connected to the oil-gas separator tank must be disassembled to remove the old filter element. The entire process requires specialized tools, is time-consuming and labor-intensive, and frequent disassembly of pipes and flanges can easily lead to aging or damage to the seals at the connections, resulting in oil leaks during equipment operation. During disassembly and installation, residual lubricating oil can easily drip onto the equipment and work area, causing environmental pollution. Furthermore, the old filter element may carry oil stains when removed, which are inconvenient to handle. When maintenance personnel operate in confined spaces, poor visibility or operational difficulties may lead to improper installation or incomplete sealing of the filter element, affecting the separation effect.

[0004] Therefore, developing a screw air compressor that enables rapid, clean, and safe replacement of filter membranes has significant practical value. Utility Model Content

[0005] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0006] In view of the above-mentioned and / or the problems existing in the use of screw air compressors with easy filter membrane replacement, this utility model is proposed.

[0007] Therefore, the purpose of this utility model is to provide a screw air compressor that facilitates filter membrane replacement. The top inspection port, in conjunction with the cover plate, allows for easy opening and removal of the filter element without requiring maintenance personnel to enter. A flange is mounted on the top of the mounting ring, and the inner sealing ring at the top ensures tight contact with the bottom of the cover plate, improving sealing. An elastic element pushes the support ring against the bottom of the filter element, providing a certain pre-tightening force and assisting in sealing. Rotating the locking pin shortens the distance between it and the threaded seat, and prying the locking pin presses the cover plate tight. Conversely, prying the locking pin up and rotating it in the opposite direction increases the distance between the locking pin and the threaded seat. Finally, flipping the locking pin separates it from the opening seat, releasing the cover plate and facilitating disassembly.

[0008] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution: A screw air compressor with an easy-to-replace filter membrane, comprising: An oil-gas separator is provided with an inspection port on its top, an interlocking ring is provided inside the inspection port, and an exhaust pipe is provided on the side wall of the inspection port. A cover plate, wherein an air passage is provided inside the cover plate, an insertion tube is provided at the bottom of the cover plate, and an air outlet is provided at the bottom of the cover plate to cooperate with the exhaust pipe. The filter element has a flange at its top that rests on the top of the mounting ring, and an air outlet connector at its top. The inner wall of the air outlet connector is interference-fitted with the outer wall of the insertion tube. A pre-tensioning assembly, which is supported at the bottom of the filter element; A locking pin secures the cover plate to the access port.

[0009] As a preferred embodiment of the screw air compressor with easy filter membrane replacement described in this utility model, the compressor body is provided on the side wall of the oil-gas separator, and the support legs are provided at the bottom of the oil-gas separator.

[0010] As a preferred embodiment of the screw air compressor for easy filter membrane replacement described in this utility model, the side wall of the inspection port is provided with a shaft bracket, the top of the inspection port is provided with a sealing groove, and an outer sealing ring is provided inside the sealing groove.

[0011] As a preferred embodiment of the screw air compressor for easy filter membrane replacement described in this utility model, a sealing groove is provided on the top of the flange, and an inner sealing ring is provided inside the sealing groove.

[0012] As a preferred embodiment of the screw air compressor with easy filter membrane replacement described in this utility model, the bottom of the oil-gas separator is provided with a liquid collection chamber, and the bottom of the liquid collection chamber is provided with a discharge valve.

[0013] As a preferred embodiment of the screw air compressor for easy filter membrane replacement described in this utility model, the pre-tightening assembly includes a base, an elastic element distributed on the top of the support ring, and a support ring disposed on the top of the elastic element. The side wall of the base is provided with a support plate that is fixedly connected to the inner wall of the oil-gas separator.

[0014] As a preferred embodiment of the screw air compressor for easy filter membrane replacement described in this utility model, the bottom of the locking pin is threadedly fitted with a threaded seat, and the side wall of the threaded seat is provided with a fixing rod that movably engages with the shaft bracket.

[0015] As a preferred embodiment of the screw air compressor for easy filter membrane replacement described in this utility model, the side wall of the cover plate is provided with an open slot, and a washer is provided between the locking pin and the open slot.

[0016] Compared with the prior art, the advantages of this utility model are as follows: This screw air compressor with easy filter membrane replacement allows for easy opening and removal of the filter element through the inspection port on the top and the cover plate, eliminating the need for maintenance personnel to enter for maintenance. The flange is mounted on the top of the ring, and the inner sealing ring on the top makes tight contact with the bottom of the cover plate, improving the sealing performance. The elastic element pushes the support ring against the bottom of the filter element, providing a certain pre-tightening force and assisting in sealing. By rotating the locking pin, the distance between it and the threaded seat is shortened, and the locking pin is pried open to press the cover plate tight. Conversely, prying up the locking pin and rotating it in the opposite direction increases the distance between the locking pin and the threaded seat. Finally, flipping the locking pin separates it from the opening seat, thus releasing the lock on the cover plate and facilitating disassembly. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the overall structure of a screw air compressor that facilitates filter membrane replacement according to the present invention. Figure 2 This is an exploded structural diagram of a screw air compressor with an easily replaceable filter membrane according to the present invention. Figure 3 This is a cross-sectional structural diagram of a screw air compressor with an easy-to-replace filter membrane according to the present invention. Figure 4 This is a schematic diagram of the cover plate structure of a screw air compressor with an easy-to-replace filter membrane according to the present invention. Figure 5This is a schematic diagram of the filter element structure of a screw air compressor with an easy-to-replace filter membrane according to the present invention. Figure 6 This is a schematic diagram of the locking pin part of a screw air compressor that facilitates filter membrane replacement according to this utility model.

[0018] 100. Oil-gas separator; 101. Liquid collection tank; 102. Discharge valve; 103. Compressor body; 110. Inspection port; 111. Shaft bracket; 120. Outer sealing ring; 130. Overlapping ring; 140. Exhaust pipe; 200. Cover plate; 201. Air passage; 202. Insert pipe; 210. Opening retainer; 300. Filter element; 301. Air outlet connector; 310. Flange; 311. Inner sealing ring; 400. Preload assembly; 410. Base; 420. Elastic element; 430. Support ring; 500. Locking pin; 510. Threaded seat; 520. Washer. Detailed Implementation

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0020] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure will not be enlarged to scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0022] This utility model provides a screw air compressor with an easy-to-replace filter membrane. The top inspection port cooperates with the cover plate, making it easy to open and remove the filter element without the need for maintenance personnel to enter. The flange is mounted on the top of the ring, and the inner sealing ring on the top makes tight contact with the bottom of the cover plate to improve the sealing performance. The elastic element pushes the support ring against the bottom of the filter element to provide a certain pre-tightening force and assist in sealing. By rotating the locking pin, the distance between it and the threaded seat is shortened, and the locking pin is pried open to press the cover plate tight. Conversely, prying up the locking pin and rotating it in the opposite direction increases the distance between the locking pin and the threaded seat. Finally, flipping the locking pin separates it from the opening seat, which releases the lock on the cover plate and facilitates disassembly.

[0023] Figures 1-6 The diagram shown is a structural schematic of one embodiment of a screw air compressor with an easily replaceable filter membrane according to this utility model. Please refer to [link / reference]. Figures 1-6The screw air compressor of this embodiment, which facilitates filter membrane replacement, includes an oil-gas separator 100, a cover plate 200, a filter element 300, a pre-tightening assembly 400, and a locking pin 500 in its main body.

[0024] The oil-gas separator 100 is connected to the cover plate 200 via a top inspection port 110, allowing for easy opening and removal of the filter element 300 without requiring maintenance personnel to enter for inspection. The outer sealing ring 120 engages with the bottom of the cover plate 200 to provide a seal. Specifically, the top of the oil-gas separator 100 is provided with an inspection port 110, the inside of which is provided with a retaining ring 130, and the side wall of the inspection port 110 is provided with an exhaust pipe 140. In this embodiment, the side wall of the oil-gas separator 100 is provided with a compressor body 103, the bottom of the oil-gas separator 100 is provided with support legs, the side wall of the inspection port 110 is provided with a shaft bracket 111, the top of the inspection port 110 is provided with a sealing groove, the inside of which is provided with an outer sealing ring 120, and the bottom of the oil-gas separator 100 is provided with a liquid collection chamber 101, the bottom of which is provided with a discharge valve 102. The cover plate 200 is inserted into the air outlet connector 301 of the filter element 300 through the insertion tube 202. When the cover plate 200 is opened, the filter element 300 is pulled out from the inspection port 110 together. The opening seat 210 of the cover plate 200 cooperates with the washer 520 and the locking pin 500 to facilitate locking the locking pin 500. The air passage 201 is connected to the insertion tube 202 and the air outlet. The air outlet is connected to the exhaust pipe 140 to facilitate exhaust while positioning the cover plate 200, so as to facilitate precise assembly of the cover plate 200 and the inspection port 110. Specifically, the cover plate 200 has an air passage 201 inside, an insertion tube 202 at the bottom of the cover plate 200, and an air outlet at the bottom of the cover plate 200 that cooperates with the exhaust pipe 140. In this embodiment, the side wall of the cover plate 200 has an opening seat 210, and a washer 520 is provided between the locking pin 500 and the opening seat 210. The filter element 300 is mounted on the top of the lap ring 130 via a flange 310. The inner sealing ring 311 on the top of the filter element 300 is in close contact with the bottom of the cover plate 200 to improve the sealing performance. Specifically, the top of the filter element 300 is provided with a flange 310 that rests on the top of the lap ring 130. The top of the filter element 300 is provided with an air outlet connector 301. The inner wall of the air outlet connector 301 is press-fitted with the outer wall of the insertion tube 202. In this embodiment, the top of the flange 310 is provided with a sealing groove, and the inner sealing ring 311 is provided inside the sealing groove. The pre-tightening assembly 400 uses the elastic element 420 to push the support ring 430 against the bottom of the filter element 300, providing a certain pre-tightening force and assisting in its sealing. Specifically, the pre-tightening assembly 400 is supported at the bottom of the filter element 300. In this embodiment, the pre-tightening assembly 400 includes a base 410, an elastic element 420 distributed on the top of the support ring 430, and a support ring 430 disposed on the top of the elastic element 420. The side wall of the base 410 is provided with a support plate that is fixedly connected to the inner wall of the oil-gas separator 100. The locking pin 500 shortens the distance between itself and the threaded seat 510 by rotating, and the locking pin 500 is pried open to press the cover plate 200. Conversely, the locking pin 500 is pried up and rotated in the opposite direction, increasing the distance between the locking pin 500 and the threaded seat 510. Then, the locking pin 500 is flipped to separate from the opening retainer 210, thereby releasing the lock on the cover plate 200 and facilitating disassembly. Specifically, the locking pin 500 locks the cover plate 200 to the inspection port 110. In this embodiment, the bottom of the locking pin 500 is threadedly fitted with the threaded seat 510, and the side wall of the threaded seat 510 is provided with a fixing rod that is movably fitted with the shaft bracket 111.

[0025] Combination Figures 1-6 This embodiment of a screw air compressor with an easy-to-replace filter membrane is used as follows: The top inspection port 110 engages with the cover plate 200, allowing easy opening and removal of the filter element 300 without requiring maintenance personnel to enter. The outer sealing ring 120 engages with the bottom of the cover plate 200 for sealing. The insertion tube 202 is inserted into the air outlet connector 301 of the filter element 300. When the cover plate 200 is opened, the filter element 300 is pulled out from the inspection port 110. The opening seat 210 of the cover plate 200 engages with the washer 520 and the locking pin 500 to secure the locking pin 500. The air passage 201 connects to the insertion tube 202 and the air outlet, which in turn connects to the exhaust pipe 140 for easy exhaust. Simultaneously, the cover plate 200 is positioned to facilitate precise assembly with the inspection port 110. The flange 310 is mounted on the top of the lap ring 130, and the inner sealing ring 311 at the top is in close contact with the bottom of the cover plate 200 to improve the sealing performance. The elastic element 420 pushes the support ring 430 against the bottom of the filter element 300 to provide a certain pre-tightening force and assist in sealing. By rotating, the distance between the cover plate 200 and the threaded seat 510 is shortened, and the locking pin 500 is pried open to press the cover plate 200 tight. Conversely, the locking pin 500 is pried up and rotated in the opposite direction, increasing the distance between the locking pin 500 and the threaded seat 510. Then, the locking pin 500 is flipped to separate from the opening retainer 210, thereby releasing the lock on the cover plate 200 for easy disassembly.

[0026] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A screw air compressor with an easy-to-replace filter membrane, characterized in that, include: An oil-gas separator (100) is provided with an inspection port (110) at the top, a jacking ring (130) is provided inside the inspection port (110), and an exhaust pipe (140) is provided on the side wall of the inspection port (110). A cover plate (200) is provided with an air passage (201) inside the cover plate (200), an insertion tube (202) is provided at the bottom of the cover plate (200), and an air outlet that cooperates with the exhaust pipe (140) is provided at the bottom of the cover plate (200). The filter element (300) has a flange (310) on top of the flange (130) and an air outlet connector (301) on top of the filter element (300). The inner wall of the air outlet connector (301) is press-fitted with the outer wall of the insertion tube (202). A pre-tensioning assembly (400) is supported at the bottom of the filter element (300); A locking pin (500) locks the cover plate (200) to the access port (110).

2. The screw air compressor with easy filter membrane replacement according to claim 1, characterized in that, The side wall of the oil-gas separator (100) is provided with a compressor body (103), and the bottom of the oil-gas separator (100) is provided with support legs.

3. A screw air compressor with an easily replaceable filter membrane according to claim 1, characterized in that, The side wall of the inspection port (110) is provided with a shaft bracket (111), and the top of the inspection port (110) is provided with a sealing groove, and an outer sealing ring (120) is provided inside the sealing groove.

4. A screw air compressor with an easily replaceable filter membrane according to claim 1, characterized in that, The top of the flange (310) is provided with a sealing groove, and an inner sealing ring (311) is provided inside the sealing groove.

5. A screw air compressor with an easily replaceable filter membrane according to claim 1, characterized in that, The bottom of the oil-gas separator (100) is provided with a liquid collection tank (101), and the bottom of the liquid collection tank (101) is provided with a discharge valve (102).

6. A screw air compressor with an easily replaceable filter membrane according to claim 1, characterized in that, The pre-tightening assembly (400) includes a base (410), an elastic element (420) distributed on the top of the support ring (430), and a support ring (430) disposed on the top of the elastic element (420). The side wall of the base (410) is provided with a support plate that is fixedly connected to the inner wall of the oil-gas separator (100).

7. A screw air compressor with an easily replaceable filter membrane according to claim 1, characterized in that, The bottom of the locking pin (500) is threadedly fitted with a threaded seat (510), and the side wall of the threaded seat (510) is provided with a fixing rod that is movably fitted with the shaft bracket (111).

8. A screw air compressor with an easily replaceable filter membrane according to claim 1, characterized in that, The side wall of the cover plate (200) is provided with an opening seat (210), and a washer (520) is provided between the locking pin (500) and the opening seat (210).

Images