Dust filtering device of screw compressor

Abstract

The utility model relates to the technical field of screw compressors, and discloses a screw compressor dust filtering device which comprises a compressor body, an air inlet pipe is installed at the upper end of the compressor body, a conical pipe is installed at the upper end of the air inlet pipe, and a connecting pipe is installed at the upper end of the conical pipe. A piston block is slidably connected to the inner wall of the conical pipe and the inner wall of the connecting pipe, a fixing ring is installed on the inner wall of the air inlet pipe, a spring is installed at the upper end of the fixing ring, the side, away from the fixing ring, of the spring and the piston block are installed, and multiple sets of first connecting blocks are installed at the upper end of the piston block; by means of the working process, the dust filtering device of the screw compressor can effectively filter gas entering the compressor, impurities in the gas are removed, abrasion to a screw and a star wheel in the compressor is reduced, and the dust filtering device of the screw compressor has the advantages that the dust filtering device is simple in structure and convenient to use, and the service life of the screw compressor is prolonged. And the service life and performance of the compressor are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of screw compressors, in particular to a dust filtering device for a screw compressor. Background Art

[0002] A screw compressor is a positive displacement compressor. Its core working principle relies on the yin and yang rotors that mesh with each other in parallel inside the casing. When these rotors rotate inside the casing, the tooth volume between them changes, thereby achieving the suction, compression and discharge of gas. Screw compressors are mainly divided into two types: single-screw compressors and twin-screw compressors.

[0003] In the authorized patent document with the announcement number CN216842218U, a screw compressor is disclosed, including a compressor housing, a head connected to one side of the compressor housing, a seat one and a seat two are respectively arranged on both sides of the compressor housing, and a rotor group is rotatably connected between the seat one and the seat two through a bearing; a cylinder body is arranged between the seat one and the seat two in the compressor housing, and an air outlet is processed under the cylinder body; a sealing plate is installed in the head; an impeller is rotatably arranged between the sealing plate and the seat one; the air outlet is connected to the bottom of the impeller. Compared with the prior art, a screw compressor utilizes the rotation of the impeller in the compressor to separate oil and gas, reduces the oil and gas separation cylinder, reduces the manufacturing cost, and reduces the installation space.

[0004] When the above device and the traditional compressor are in use, when the gas enters the compressor, some impurities will remain in the gas, which may cause wear to the screw or star wheel inside the compressor. Therefore, a device for filtering the gas is proposed to reduce the wear on the screw and star wheel inside the compressor. Utility Model Content

[0005] The purpose of the utility model is to provide a dust filtering device for a screw compressor, which solves the problem that when the above devices and traditional compressors are in use, when the gas enters the compressor, some impurities will remain in the gas, which may cause wear to the screw or star wheel inside the compressor, thereby proposing a device that filters the gas and reduces the problem of wear on the screw and star wheel inside the compressor.

[0006] The embodiment of the present application provides a dust filtering device for a screw compressor, comprising a compressor body, an air intake pipe is installed on the upper end of the compressor body, a conical pipe is installed on the upper end of the air intake pipe, a connecting pipe is installed on the upper end of the conical pipe, a piston block is slidably connected to the inner wall of the conical pipe and the inner wall of the connecting pipe, a fixing ring is installed on the inner wall of the air intake pipe, a spring is installed on the upper end of the fixing ring, a side of the spring away from the fixing ring is installed with the piston block, a plurality of groups of first connecting blocks are installed on the upper end of the plurality of groups of first connecting blocks, a first closed loop is installed on the upper end of the spring, and the spring A connecting rod is installed at the lower end of the piston block, and a second connecting block is installed on the outer wall of the connecting rod. A second closed loop is installed on the side of multiple groups of the second connecting blocks away from the connecting rod. The outer wall of the second closed loop is slidably connected to the inner wall of the air inlet pipe, and the outer wall of the first closed loop is slidably connected to the inner wall of the connecting pipe. The outer wall of the connecting pipe and the outer wall of the air inlet pipe are installed with the same filter tube, the filter tube is U-shaped, and a filter net is slidably installed inside the filter tube, the air inlet end of the filter tube is located between the piston block and the first closed loop, and the air outlet end of the filter tube is located below the second closed loop of the piston block.

[0007] By adopting the above technical scheme, when the compressor body is running, the intake pipe can play a role of intake air into the compressor body, and the piston block plays a role of preliminary blocking on the connecting pipe, the tapered pipe and the intake pipe, and the gas can be transported from the inside of the filter tube, and the filter screen can filter the gas. When the filtering effect of the filter screen is poor, the filter screen will be blocked, and the gas will push the piston block to move downward with the cooperation of the spring, and the gas can be transported from the tapered tube, and when the piston block moves, it can drive the first connecting block, the second connecting block, the first closed loop and the second closed loop to move downward, and the first closed loop and the second closed loop can respectively close the air inlet end and the air outlet end of the filter tube, thereby facilitating the staff to replace the filter tube, and after the filter tube is reinstalled, the gas is transported from the filter tube again, so that the piston block is reset with the cooperation of the spring, and then the gas is filtered, and the wear of the gas on the inside of the compressor body is reduced.

[0008] Optionally, the compressor body includes a shell having a cavity inside, a rotating rod rotatably mounted on the inner wall of one side of the shell located inside the cavity, a fixed disk rotatably mounted on the outer wall of the rotating rod away from the inner wall of the shell, and the fixed disk is mounted on the inner wall of the shell.

[0009] By adopting the above technical solution, the cavity can be provided to accommodate the rotating rod and the fixed disk, the shell can fix the fixed disk, and the fixed disk and the inner wall of the shell can support the rotating rod.

[0010] Optionally, a side surface of the fixed disk is provided with a plurality of exhaust holes, and the plurality of exhaust holes are evenly arranged in a circular array. The outer wall of the rotating rod is fixedly connected with a screw rod, and the screw rod is slidably connected with the fixed disk.

[0011] By adopting the above technical solution, the screw can be fixed by the rotating rod, and the exhaust hole can discharge the gas inside the thread groove of the screw.

[0012] Optionally, star wheels are rotatably mounted on the inner walls of the shell located on both sides of the screw, and the star wheels are meshed with the screw.

[0013] By adopting the above technical solution, the two star wheels can be driven to rotate when the screw rotates, and the shell can play a role of rotational support for the star wheels.

[0014] Optionally, a coupling is installed on the side of the rotating rod away from the fixed disk, and the coupling is rotatably mounted on the inner wall of the shell.

[0015] By adopting the above technical solution, the coupling can be fixed by the rotating rod, and the housing can provide rotational support for the coupling.

[0016] Optionally, a motor housing is installed on one side of the shell, a driving motor is installed on the inner wall of the motor housing, and an output shaft of the driving motor is installed with a coupling.

[0017] By adopting the above technical solution, the housing can fix the motor casing, the motor casing can fix the drive motor, and the drive motor can drive the coupling to rotate.

[0018] Optionally, the output end of the air inlet pipe corresponds to the position of the screw, and the output end of the air inlet pipe is located between the coupling and the screw.

[0019] By adopting the above technical solution, the position of the output end of the air inlet pipe is set between the coupling and the screw, which facilitates the gas to be compressed by the screw and the star wheel.

[0020] Optionally, an exhaust pipe is installed on a side of the shell close to the fixed plate.

[0021] By adopting the above technical solution, the gas can be transported through the exhaust pipe.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] The technical solution of the present application is that when the compressor body is running, the intake pipe can intake air into the compressor body, and the piston block has a preliminary blocking effect on the connecting pipe, the tapered pipe and the intake pipe, and the gas can be transported from the inside of the filter tube, and the filter screen can filter the gas. When the filtering effect of the filter screen is poor, the filter screen will be blocked, and the gas will push the piston block to move downward with the cooperation of the spring, and the gas can be transported from the tapered tube, and when the piston block moves, it can drive the first connecting block, the second connecting block, the first closed loop and the second closed loop to move downward, and the first closed loop and the second closed loop can respectively close the air inlet end and the air outlet end of the filter tube, thereby facilitating the staff to replace the filter tube, and after the filter tube is reinstalled, the gas is transported from the filter tube again, so that the piston block is reset with the cooperation of the spring, and then the gas is filtered, and the wear of the gas on the inside of the compressor body is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0025] Figure 1 This is a front view schematic diagram of a dust filtering device for a screw compressor according to the utility model;

[0026] Figure 2 It is a right side partial cross-sectional view of a filter tube of a dust filter device for a screw compressor of the utility model;

[0027] Figure 3 This is a schematic front view of a screw of a dust filter device for a screw compressor of the utility model;

[0028] Figure 4 It is a left side schematic diagram of a fixed disk of a dust filter device for a screw compressor according to the utility model.

[0029] In the figure: 1. compressor body; 2. air intake pipe; 3. conical pipe; 4. connecting pipe; 5. filter pipe; 6. filter screen; 7. piston block; 8. fixing ring; 9. spring; 10. first connecting block; 11. first closed loop; 12. second closed loop; 13. connecting rod; 14. second connecting block; 15. motor housing; 16. driving motor; 17. coupling; 18. rotating rod; 19. screw; 20. star wheel; 21. fixing plate; 22. exhaust hole; 23. exhaust pipe. DETAILED DESCRIPTION

[0030] See also Figure 1-4The utility model provides a technical solution: a dust filtering device for a screw compressor, comprising a compressor body 1, an air intake pipe 2 is installed at the upper end of the compressor body 1, a conical pipe 3 is installed at the upper end of the air intake pipe 2, a connecting pipe 4 is installed at the upper end of the conical pipe 3, a piston block 7 is slidably connected between the inner wall of the conical pipe 3 and the inner wall of the connecting pipe 4, a fixing ring 8 is installed at the inner wall of the air intake pipe 2, a spring 9 is installed at the upper end of the fixing ring 8, the side of the spring 9 away from the fixing ring 8 is installed with the piston block 7, a plurality of groups of first connecting blocks 10 are installed at the upper end of the piston block 7, a first closed loop 11 is installed at the upper end of the plurality of groups of first connecting blocks 10, and the piston block A connecting rod 13 is installed at the lower end of 7, a second connecting block 14 is installed on the outer wall of the connecting rod 13, a second closed loop 12 is installed on the side of the plurality of second connecting blocks 14 away from the connecting rod 13, the outer wall of the second closed loop 12 is slidably connected to the inner wall of the air inlet pipe 2, the outer wall of the first closed loop 11 is slidably connected to the inner wall of the connecting pipe 4, the outer wall of the connecting pipe 4 and the outer wall of the air inlet pipe 2 are installed with the same filter tube 5, the filter tube 5 is U-shaped, a filter screen 6 is slidably installed inside the filter tube 5, the air inlet end of the filter tube 5 is located between the piston block 7 and the first closed loop 11, and the air outlet end of the filter tube 5 is located below the second closed loop 12 of the piston block 7;

[0031] The compressor body 1 includes a shell with a cavity inside. A rotating rod 18 is rotatably mounted on the inner wall of one side of the shell located inside the cavity. A fixed disk 21 is rotatably mounted on the outer wall of the rotating rod 18 away from the inner wall of the shell. The fixed disk 21 is mounted on the inner wall of the shell.

[0032] In the technical solution of the utility model, when the compressor body 1 is running, the intake pipe 2 can play the role of air intake to the inside of the compressor body 1, and the piston block 7 plays a preliminary blocking role on the connecting pipe 4, the tapered pipe 3 and the intake pipe 2, and the gas can be transported from the inside of the filter tube 5, and the filter screen 6 can filter the gas. When the filtering effect of the filter screen 6 is poor, the filter screen 6 will be blocked, and the gas will push the piston block 7 to move downward with the cooperation of the spring 9, and the gas can be transported from the tapered tube 3, and the piston block 7 can drive the first connecting block 10, the second connecting block 14, the first closed loop 11 and the second closed loop 12 to move downward when moving, and the first closed loop 11 and the second closed loop 12 can respectively close the air inlet end and the air outlet end of the filter tube 5, so as to facilitate the staff to replace the filter tube 5, and after the filter tube 5 is reinstalled, the gas is transported from the filter tube 5 again, so that the piston block 7 is reset with the cooperation of the spring 9, and then the gas is filtered, and the wear of the gas on the inside of the compressor body 1 is also reduced.

[0033] In addition, the cavity can be provided to accommodate the rotating rod 18 and the fixed disk 21 , the shell can fix the fixed disk 21 , and the fixed disk 21 and the inner wall of the shell can provide rotational support for the rotating rod 18 .

[0034] In the technical solution of the utility model, if Figure 1 , Figure 3 and Figure 4 As shown, a plurality of exhaust holes 22 are provided on one side of the fixed disk 21, and the plurality of exhaust holes 22 are evenly arranged in a circular array. A screw 19 is fixedly connected to the outer wall of the rotating rod 18, and the screw 19 is slidably connected to the fixed disk 21. The rotating rod 18 can fix the screw 19, and the exhaust holes 22 can discharge the internal gas in the thread groove of the screw 19. Star wheels 20 are rotatably installed on the inner walls of the shell located on both sides of the screw 19, and the star wheels 20 are meshed with the screw 19. When the screw 19 rotates, the two star wheels 20 can be driven to rotate, and the shell can support the star wheels 20. A coupling 17 is installed on the side of the rotating rod 18 away from the fixed disk 21. The coupling 17 is rotatably installed with the inner wall of the shell, and the rotating rod 18 can fix the coupling 17, and the shell can support the coupling 17.

[0035] In the technical solution of the utility model, if Figure 1 , Figure 3 and Figure 4 As shown, the output end of the air intake pipe 2 corresponds to the position of the screw 19, and the output end of the air intake pipe 2 is located between the coupling 17 and the screw 19. The position of the output end of the air intake pipe 2 is located between the coupling 17 and the screw 19, which facilitates the gas to be compressed by the screw 19 and the star wheel 20. An exhaust pipe 23 is installed on the side of the shell close to the fixed disk 21, and the exhaust pipe 23 can be used to transport the gas.

[0036] In the technical solution of the utility model, if Figure 1 and Figure 3 As shown, a motor housing 15 is installed on one side of the shell, and a drive motor 16 is installed on the inner wall of the motor housing 15. The output shaft of the drive motor 16 is installed with a coupling 17. The shell can fix the motor housing 15, and the motor housing 15 can fix the drive motor 16, and the drive motor 16 can drive the coupling 17 to rotate.

[0037] When in use, first, the coupling 17 can be driven by the driving motor 16 to drive the rotating rod 18 to rotate, and the screw 19 on the rotating rod 18 rotates accordingly, forming a meshing relationship with the star wheels 20 on both sides. The rotation of the screw 19 and the star wheel 20 forms a closed volume change inside the compressor body 1, thereby realizing the suction, compression and discharge of gas, and the intake pipe 2 can play a role of intake to the inside of the compressor body 1, and the piston block 7 plays a role of preliminary blocking the connecting pipe 4, the tapered pipe 3 and the intake pipe 2, and the gas can be transported from the inside of the filter tube 5, and the filter screen 6 can filter the gas. When the filtering effect of the filter screen 6 is poor, the filter screen 6 will be blocked. , the gas will push the piston block 7 to move downward with the cooperation of the spring 9, and the gas can be transported from the tapered tube 3, and when the piston block 7 moves, it can drive the first connecting block 10, the second connecting block 14, the first closed loop 11 and the second closed loop 12 to move downward, and the first closed loop 11 and the second closed loop 12 can respectively close the air inlet and outlet ends of the filter tube 5, thereby facilitating the staff to replace the filter tube 5. After the filter tube 5 is reinstalled, the gas is transported from the filter tube 5 again, so that the piston block 7 is reset with the cooperation of the spring 9, and then the gas is filtered, which also reduces the wear of the gas on the star wheel 20 and the screw 19.

Claims

1. A dust filter device for a screw compressor, characterized in that: The compressor comprises a compressor body (1), an intake pipe (2) is installed at the upper end of the compressor body (1), a conical pipe (3) is installed at the upper end of the intake pipe (2), a connecting pipe (4) is installed at the upper end of the conical pipe (3), a piston block (7) is slidably connected between the inner wall of the conical pipe (3) and the inner wall of the connecting pipe (4), a fixing ring (8) is installed at the inner wall of the intake pipe (2), a spring (9) is installed at the upper end of the fixing ring (8), a side of the spring (9) away from the fixing ring (8) is installed with the piston block (7), a plurality of groups of first connecting blocks (10) are installed at the upper end of the plurality of groups of first connecting blocks (10), a first closed ring (11) is installed at the upper end of the piston block (7), and a connecting rod (13) is installed at the lower end of the piston block (7) The outer wall of the connecting rod (13) is provided with a second connecting block (14), and a second closed loop (12) is provided on a side of the plurality of second connecting blocks (14) away from the connecting rod (13); the outer wall of the second closed loop (12) is slidably connected to the inner wall of the air inlet pipe (2); the outer wall of the first closed loop (11) is slidably connected to the inner wall of the connecting pipe (4); the outer wall of the connecting pipe (4) and the outer wall of the air inlet pipe (2) are provided with the same filter tube (5); the filter tube (5) is U-shaped, and a filter screen (6) is slidably installed inside the filter tube (5); the air inlet end of the filter tube (5) is located between the piston block (7) and the first closed loop (11), and the air outlet end of the filter tube (5) is located below the second closed loop (12) of the piston block (7).

2. A dust filter device for a screw compressor (19) according to claim 1, characterized in that: The compressor body (1) comprises a shell, a cavity is provided inside the shell, a rotating rod (18) is rotatably mounted on the inner wall of one side of the shell located inside the cavity, a fixed disk (21) is rotatably mounted on the outer wall of the rotating rod (18) away from the inner wall of the shell, and the fixed disk (21) is mounted on the inner wall of the shell.

3. A dust filter device for a screw compressor (19) according to claim 2, characterized in that: A plurality of exhaust holes (22) are provided on one side of the fixed disk (21), and the plurality of exhaust holes (22) are evenly arranged in a circular array. A screw rod (19) is fixedly connected to the outer wall of the rotating rod (18), and the screw rod (19) is slidably connected to the fixed disk (21).

4. A dust filter device for a screw compressor (19) according to claim 3, characterized in that: Star wheels (20) are rotatably mounted on the inner walls of the housing located on both sides of the screw rod (19), and the star wheels (20) are meshed with the screw rod (19).

5. A dust filter device for a screw compressor (19) according to claim 3, characterized in that: A coupling (17) is installed on the side of the rotating rod (18) away from the fixed disk (21), and the coupling (17) is rotatably installed with the inner wall of the shell.

6. A dust filter device for a screw compressor (19) according to claim 4, characterized in that: A motor housing (15) is installed on one side of the housing, a driving motor (16) is installed on the inner wall of the motor housing (15), and an output shaft of the driving motor (16) is installed with a coupling (17).

7. A dust filter device for a screw compressor (19) according to claim 5, characterized in that: The output end of the air intake pipe (2) corresponds to the position of the screw rod (19), and the output end of the air intake pipe (2) is located between the coupling (17) and the screw rod (19).

8. A dust filter device for a screw compressor (19) according to claim 3, characterized in that: An exhaust pipe (23) is installed on one side of the housing close to the fixing plate (21).

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