Oil and gas separator for screw air compressor

Abstract

The utility model discloses an oil -gas separator of screw air compressor relates to oil -gas separator technical field, including casing and filter core, the bottom fixed setting of filter core has the bottom plate, the inner bottom wall fixed setting of casing has the limit board, the top of limit board is close to the edge and is equipped with the limit ring groove, rotates and is connected with the swivel seat in the limit ring groove, the outside wall of swivel seat is equipped with a plurality of wedge groove, the bottom fixed setting of bottom plate has a plurality of wedge, the wedge and wedge groove are adapted, the utility model discloses the adaptation structure of wedge and wedge groove, and the rotation action of swivel seat is combined, realizes the quick positioning and fixed of filter core, need not use the tool and operate bolt one by one, and the time of filter core replacement is greatly shortened, and the maintenance efficiency of equipment is improved. In actual operation, only needs to put down the filter core and makes the wedge into the wedge groove, and can complete the preliminary fixation.

Description

Technical Field

[0001] This utility model relates to the field of oil-gas separator technology, specifically an oil-gas separator for screw air compressors. Background Technology

[0002] During the operation of a screw air compressor, the oil-gas separator is a key component for separating oil mist from gas in the compressed air, and its performance directly affects the operating efficiency and compressed air quality of the air compressor. The filter element, as the core filtration element of the oil-gas separator, needs to be replaced regularly to ensure separation effectiveness; therefore, the rationality of the connection structure between the filter element and the housing is crucial.

[0003] In existing technologies, filter elements are mostly fixed to the housing using bolt connections or simple snap-fit ​​connections. When using bolt connections, replacing the filter element requires the use of tools to remove and install each bolt individually, which is cumbersome, especially in scenarios where the air compressor installation space is limited, making it difficult to use tools and resulting in excessively long replacement times, affecting equipment maintenance efficiency. Furthermore, screw air compressors generate continuous vibration during operation, and after long-term use, the bolts are prone to loosening, leading to gaps between the filter element and the housing. This allows the oil-air mixture to leak directly without filtration, severely reducing separation efficiency and potentially affecting the normal operation of the air compressor.

[0004] Simple snap-fit ​​connections often lack effective reset and anti-loosening mechanisms, making the snaps prone to detaching under vibration, resulting in insecure filter element fixation. Furthermore, some snap-fit ​​structures have poor guiding properties, making precise filter element alignment difficult during installation, which can cause snap wear or damage and shorten the component's lifespan.

[0005] To address these issues, we designed an oil-gas separator for screw air compressors. Utility Model Content

[0006] The purpose of this invention is to provide an oil-gas separator for screw air compressors to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the present invention provides an oil-gas separator for a screw air compressor, comprising a housing and a filter element. A base plate is fixedly installed at the bottom end of the filter element, and a limiting plate is fixedly installed on the inner bottom wall of the housing. A limiting ring groove is formed at the top end of the limiting plate near the edge. A rotating seat is rotatably connected in the limiting ring groove. Multiple wedge slots are formed on the outer side wall of the rotating seat. Multiple wedge blocks are fixedly installed at the bottom end of the base plate, and the wedge blocks and the wedge slots are adapted to each other.

[0008] Furthermore, the outer wall of the rotating seat is provided with a reset assembly. There are two sets of reset assemblies, and the two sets of reset assemblies are arranged in opposite tangential directions at both ends of the radial direction of the rotating seat.

[0009] Furthermore, the reset assembly includes a screw and a reset spring, with one end of the screw mounted on the rotating seat via the reset spring and the other end mounted on the limiting plate via the reset spring.

[0010] Furthermore, an end cap is fixedly provided at the top of the housing, and a pair of fixing components are symmetrically provided on the top surface of the end cap. The fixing components include a fixing groove, and a locking block is slidably connected in the fixing groove. A locking groove is opened on the inner side wall of the top of the housing, and one end of the locking block passes through the outer side wall of the fixing groove and is locked in the locking groove.

[0011] Furthermore, a handle is rotatably connected to the end of the card block away from the card slot, and the handle is slidably connected in the fixed slot.

[0012] Furthermore, symmetrical positioning plates are fixedly connected along the axial direction on the outer walls of both sides of the filter element, and symmetrical positioning grooves are opened on the inner walls of both sides of the housing, with the outer side of the positioning plate slidably connected in the positioning groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. Through the matching structure of the wedge block and the wedge slot, combined with the rotation of the rotating seat, the filter element can be quickly positioned and fixed, eliminating the need to operate each bolt individually with tools. This significantly shortens the filter element replacement time and improves equipment maintenance efficiency. In actual operation, simply lower the filter element so that the wedge block enters the wedge slot to complete the initial fixing. Disassembly is easy by simply lifting the filter element upwards; the operation is simple and convenient.

[0015] 2. Two sets of reset components, arranged along opposite tangential directions at both ends of the rotary seat, generate tensile and compressive deformations respectively when the rotary seat rotates. The stored elastic potential energy can apply a continuous counterforce to the rotary seat, ensuring a tight fit between the wedge groove and the wedge block, effectively resisting vibrations during air compressor operation and preventing the filter element from loosening. This continuous elastic preload avoids the loosening defects of traditional bolt connections or simple snap-fit ​​connections, ensuring the stability of separation efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall internal structure of this utility model.

[0017] Figure 2 This is a schematic diagram of a half-section of the shell of this utility model.

[0018] Figure 3 This is a top view of the limiting plate of this utility model.

[0019] Figure 4 This is a top view of the filter element of this utility model.

[0020] In the diagram: 1. Housing; 2. Filter element; 3. Base plate; 4. End cap; 5. Limiting plate; 6. Limiting ring groove; 7. Rotating seat; 8. Wedge groove; 9. Wedge block; 10. Screw; 11. Return spring; 12. Fixing groove; 13. Locking block; 14. Locking slot; 15. Handle; 16. Positioning plate; 17. Positioning groove. Detailed Implementation

[0021] Please see Figures 1-4 This utility model provides a technical solution: an oil-gas separator for a screw air compressor, including a housing 1 and a filter element 2. A base plate 3 is fixedly installed at the bottom end of the filter element 2. A limiting plate 5 is fixedly installed on the inner bottom wall of the housing 1. A limiting ring groove 6 is formed near the edge of the top of the limiting plate 5. A rotating seat 7 is rotatably connected in the limiting ring groove 6. Multiple wedge slots 8 are formed on the outer side wall of the rotating seat 7. Multiple wedge blocks 9 are fixedly installed at the bottom end of the base plate 3, and the wedge blocks 9 are adapted to the wedge slots 8. A reset assembly is provided on the outer side wall of the rotating seat 7. There are two sets of reset assemblies, and the two sets of reset assemblies are arranged in opposite tangential directions at both ends of the radial direction of the rotating seat 7. The reset assembly includes a screw 10 and a reset spring 11. One end of the screw 10 is mounted on the rotating seat 7 through the reset spring 11, and the other end is mounted on the limiting plate 5 through the reset spring 11.

[0022] In practice, when installing filter element 2, the wedge block 9 on the bottom plate 3 of filter element 2 is aligned with the wedge groove 8 on the outer wall of the rotating seat 7. Then, filter element 2 is lowered, and the wedge block 9 gradually enters the wedge groove 8. Due to the matching structure between the wedge block 9 and the wedge groove 8, under the action of the filter element 2's own weight, the wedge block 9 will exert a squeezing force on the inner wall of the wedge groove 8, forcing the rotating seat 7 to rotate within the limiting ring groove 6 of the limiting plate 5. During the rotation of the rotating seat 7, the two sets of reset components on its outer wall will move accordingly. Because the two sets of reset components are arranged in opposite tangential directions along the radial ends of the rotating seat 7, when the rotating seat 7 rotates, the reset spring 11 of one set of reset components will be stretched, while the reset spring 11 of the other set will be compressed, thus storing elastic potential energy.

[0023] Once the filter element 2 is installed in place, the wedge block 9 is fully engaged in the wedge slot 8. At this time, the rotating seat 7 stops rotating, and the return spring 11 is in a deformed state. The elastic force generated by the spring will exert a reverse force on the rotating seat 7, causing the rotating seat 7 to tend to rotate in the opposite direction. This allows the inner wall of the wedge slot 8 to tightly adhere to the wedge block 9, firmly fixing the bottom end of the filter element 2 and effectively preventing the filter element 2 from loosening due to vibration and other factors during the operation of the air compressor.

[0024] See Figures 1-4An end cap 4 is fixedly provided at the top of the housing 1. A pair of fixing components are symmetrically provided on the top surface of the end cap 4. The fixing components include a fixing groove 12. A locking block 13 is slidably connected in the fixing groove 12. A locking groove 14 is provided on the inner side wall of the top of the housing 1. One end of the locking block 13 passes through the outer side wall of the fixing groove 12 and is locked in the locking groove 14.

[0025] See Figures 1-4 The end of the card block 13 away from the card slot 14 is rotatably connected to the handle 15, and the handle 15 is slidably connected in the fixed slot 12.

[0026] In practice, based on the above implementation, when the filter element 2 needs to be replaced, pull the handle 15 upwards. The handle 15 will drive the locking block 13 to slide along the fixing groove 12 away from the locking groove 14 until the locking block 13 is completely disengaged from the locking groove 14, thus releasing the top fixation. After the filter element 2 is installed, press the handle 15 downwards so that the handle 15 slides in the fixing groove 12 and pushes the locking block 13 towards the housing 1 until one end of the locking block 13 is inserted into the locking groove 14 on the inner side wall of the top of the housing 1.

[0027] See Figures 1-4 The filter element 2 has symmetrically arranged positioning plates 16 fixedly connected along the axial direction on both outer walls. The housing 1 has symmetrically opened positioning grooves 17 on both inner walls. The outer side of the positioning plate 16 is slidably connected in the positioning groove 17. The cooperation between the positioning plate 16 and the positioning groove 17 restricts the circumferential rotation of the filter element 2, ensuring that the wedge block 9 at the bottom of the filter element 2 can be accurately aligned with the wedge block groove 8 on the rotating seat 7.

[0028] Working principle: When installing filter element 2, align the positioning plates 16 on both sides of filter element 2 with the positioning grooves 17 on the inner wall of housing 1, and slide filter element 2 vertically downward along the positioning grooves 17. The cooperation between the positioning plates 16 and the positioning grooves 17 restricts the circumferential rotation of filter element 2, ensuring that the wedge block 9 at the bottom of filter element 2 can be accurately aligned with the wedge slot 8 on the rotating seat 7. Filter element 2 continues to move downward until the wedge block 9 at the bottom of base plate 3 is inserted into the wedge slot 8 of rotating seat 7. At this time, rotating seat 7 is rotated by the pressure of wedge block 9, which drives the reset springs 11 in the two sets of reset assemblies to deform, forming an elastic potential energy reserve.

[0029] After the filter element 2 has completely fallen into the housing 1, the end cap 4 fits against the top of the housing 1. Press down on the handle 15, causing it to slide within the fixing groove 12 and push the locking block 13 towards the housing 1 until one end of the locking block 13 engages in the locking groove 14 on the inner side wall of the top of the housing 1. At this point, the engagement between the locking block 13 and the locking groove 14 restricts the axial displacement of the filter element 2, thus completing the overall fixation of the filter element 2.

[0030] The oil-gas mixture enters from the side of the housing 1, is filtered by the filter element 2, and then the gas is discharged from the outlet channel of the end cap 4. The oil droplets slide down the inner wall of the filter element 2 to the bottom of the housing 1 and flow back through the oil return port. During this process, the return spring 11 at the bottom always applies a reverse torque to the rotating seat 7, so that the wedge block 9 and the wedge groove 8 are tightly fitted together, preventing the filter element 2 from loosening due to vibration. The locking block 13 at the top is kept in a locked state with the locking groove 14 under the pressure of the handle 15, further ensuring the stability of the filter element 2.

[0031] When filter element 2 needs to be replaced, pull handle 15 upwards. Handle 15 will cause the locking block 13 to slide along the fixing groove 12 away from the locking groove 14 until the locking block 13 is completely disengaged from the locking groove 14, releasing the top fixation. At this time, the reset spring 11 of the bottom reset assembly releases its elastic potential energy, causing the rotating seat 7 to rotate in the opposite direction, causing the wedge groove 8 to disengage from the wedge block 9. Finally, pull filter element 2 upwards along the positioning groove 17 to complete the disassembly.

Claims

1. An oil-gas separator of a screw air compressor, characterized by, The filter includes a housing (1) and a filter element (2). A base plate (3) is fixedly provided at the bottom end of the filter element (2). A limiting plate (5) is fixedly provided on the inner bottom wall of the housing (1). A limiting ring groove (6) is opened at the top end of the limiting plate (5) near the edge. A rotating seat (7) is rotatably connected in the limiting ring groove (6). A plurality of wedge grooves (8) are opened on the outer side wall of the rotating seat (7). A plurality of wedge blocks (9) are fixedly provided at the bottom end of the base plate (3). The wedge blocks (9) and the wedge grooves (8) are compatible.

2. The oil-gas separator of the screw air compressor according to claim 1, characterized in that: The outer wall of the rotating seat (7) is provided with a reset assembly. There are two sets of reset assemblies, and the two sets of reset assemblies are arranged in opposite tangential directions at both ends of the radial direction of the rotating seat (7).

3. The oil-gas separator for a screw air compressor as described in claim 2, characterized in that: The reset assembly includes a screw (10) and a reset spring (11). One end of the screw (10) is mounted on the rotating seat (7) via the reset spring (11), and the other end is mounted on the limiting plate (5) via the reset spring (11).

4. The oil-gas separator of the screw air compressor according to claim 3, characterized in that: The top of the housing (1) is fixedly provided with an end cap (4), and a pair of fixing components are symmetrically provided on the top surface of the end cap (4). The fixing components include a fixing groove (12), and a locking block (13) is slidably connected in the fixing groove (12). A locking groove (14) is opened on the inner side wall of the top of the housing (1). One end of the locking block (13) passes through the outer side wall of the fixing groove (12) and is locked in the locking groove (14).

5. The oil-gas separator of the screw air compressor as claimed in claim 4, wherein: The end of the card block (13) away from the card slot (14) is rotatably connected to a handle (15), and the handle (15) is slidably connected in the fixed slot (12).

6. The oil-gas separator of the screw air compressor as claimed in claim 5, wherein: The filter element (2) has symmetrically arranged positioning plates (16) fixedly connected along the axial direction on both sides of the outer wall. The housing (1) has symmetrically opened positioning grooves (17) on both sides of the inner wall. The outer side of the positioning plate (16) is slidably connected in the positioning groove (17).

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