Dust filtering device of screw compressor

Abstract

The utility model discloses a dust filtering device of a screw compressor, and relates to the technical field of screw compressors. The dust filtering device of the screw compressor comprises a base, a screw compressor body and a filtering chamber, the filtering assembly comprises a fixed frame, two sliding grooves are formed in the surface of the fixed frame, a movable frame is arranged in the fixed frame, two screws are fixedly connected to the upper end of the movable frame, the surfaces of the two screws are both sleeved with nuts in a threaded mode, a first connecting pipe is fixedly connected to the right side of the movable frame, and a filter element limiting frame is arranged in the fixed frame; when impurities on the surface of the filter element are too many, the nut and the screw are detached, so that the filter element is conveniently detached from the interior of the filter element limiting frame, the filter element is conveniently cleaned or replaced, it is ensured that the compressor is always kept in a good working state, and the service life of the compressor is prolonged. And the service life of the screw compressor body is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of screw compressor technology, and in particular to a dust filtration device for screw compressors. Background Technology

[0002] A screw compressor is a positive displacement compressor. Its core working principle relies on the parallel meshing of male and female rotors within the casing. As these rotors rotate within the casing, the volume of their tooth grooves changes, thereby achieving gas intake, compression, and discharge. Screw compressors are mainly divided into two types: single-screw compressors and twin-screw compressors. Chinese utility model patent, authorized announcement number "CN216842218U", discloses a screw compressor, including a compressor housing. A head is connected to one side of the compressor housing. Seat 1 and Seat 2 are respectively arranged on both sides inside the compressor housing, and a rotor assembly is rotatably connected between Seat 1 and Seat 2 via bearings. A cylinder is arranged inside the compressor housing between Seat 1 and Seat 2, and an exhaust duct is machined below the cylinder. A sealing plate is installed inside the head. An impeller is rotatably arranged between the sealing plate and Seat 1. The exhaust duct connects to the area below the impeller.

[0003] The above-mentioned technical solution utilizes the rotation of the impeller inside the compressor to separate oil and gas, reducing the number of oil-gas separators, lowering manufacturing costs, and reducing installation space. However, the above-mentioned technical solution still has certain defects. Long-term exposure to a dusty environment can easily lead to blockage of the compressor's air inlet hole, affecting the compressor's working efficiency. If not cleaned in time, the dust adhering to the air inlet can easily enter the compressor body, causing wear on the screw or star wheel inside the compressor, thereby affecting the compressor's service life. Therefore, this utility model proposes a new solution. Utility Model Content

[0004] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a dust filtration device for screw compressors. This device can solve the problem that prolonged exposure to a dusty environment can easily lead to blockage of the compressor's air inlet, affecting the compressor's working efficiency. If not cleaned in time, the dust adhering to the air inlet can easily enter the compressor body, causing wear on the screw or star wheel inside the compressor, and thus affecting the compressor's service life.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a screw compressor dust filtration device, comprising a base, a screw compressor body, and a filter chamber;

[0006] The filter assembly is located inside the screw compressor body. The filter assembly includes a fixed frame, which is fixedly connected to the inside of the filter chamber. Two sliding grooves are opened on the surface of the fixed frame. The fixed frame drives a movable frame inside. Two screws are fixedly connected to the upper end of the movable frame. The ends of the two screws near the movable frame are square. The two screws are slidably connected to the corresponding sliding grooves. Nuts are threaded onto the surface of the two screws.

[0007] The right side of the movable frame is fixedly connected to the first connecting pipe, the left side of the fixed frame is fixedly connected to the drive motor, the output end of the drive motor is fixedly connected to the turntable, and the surface of the turntable is fixedly connected to the connecting block, which is hexagonal prism in shape.

[0008] The fixed frame is equipped with a filter element limiting frame inside. The filter element limiting frame is snapped into the connecting block. The end of the filter element limiting frame away from the turntable is snapped into a filter element baffle. The filter element baffle is rotatably connected to the movable frame.

[0009] Preferably, the filter assembly further includes a connecting shaft, which is rotatably connected inside the fixed frame. A baffle is fixedly connected to the surface of the connecting shaft, and a torsion spring is sleeved on the surface of the connecting shaft. The two ends of the torsion spring are fixedly connected to the fixed frame and the baffle, respectively. The end of the baffle near the filter element limiting frame is provided with a rounded corner.

[0010] Multiple connecting strips are fixedly connected to the surface of the filter element limiting frame, a dust guide frame is fixedly connected inside the filter chamber, a dust collection box is slidably connected inside the filter chamber, and a filter element is installed inside the filter element limiting frame.

[0011] Preferably, the surface of the filter element limiting frame is provided with multiple air vents, a first filter element limiting ring is fixedly connected inside the filter element limiting frame, and a second filter element limiting ring is fixedly connected to the end of the filter element baffle near the turntable.

[0012] Both the first and second filter element limiting rings are used to fix the filter element.

[0013] Preferably, the front end of the filter chamber is hinged with a door, and the filter chamber is fixedly connected to the left side with an air inlet pipe.

[0014] Preferably, a filter box is fixedly connected inside the filter chamber, and multiple filter screens are installed inside the filter box. The end of the first connecting pipe away from the fixed frame is fixedly connected to the filter box.

[0015] Preferably, a second connecting pipe is fixedly connected to the left side of the filter box, the second connecting pipe extends out of the filter chamber, and the second connecting pipe is connected to the air inlet end of the screw compressor body.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This screw compressor dust filtration device uses the rotation of the filter element limiting frame and the tapping of the baffle to shake off dust and impurities from the filter element surface. Simultaneously, the dust guide frame and dust collection box facilitate the flow of dust and impurities into the collection box for easy cleaning. When there is excessive impurities on the filter element surface, the filter element can be easily removed from the limiting frame by disassembling the nut and screw for cleaning or replacement. This ensures stable compressor operation, extends its service life, and improves working efficiency. Maintaining filter element cleanliness and filtration efficiency ensures the compressor always operates in good condition, extending the lifespan of the screw compressor itself. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0019] Figure 1 This is a schematic diagram of the structure of a screw compressor dust filtration device according to the present invention;

[0020] Figure 2 This is a schematic diagram of the filter chamber of this utility model;

[0021] Figure 3 This is a schematic diagram of the fixing frame of this utility model;

[0022] Figure 4 This is a schematic diagram of the filter element limiting frame of this utility model;

[0023] Figure 5 This utility model Figure 2 Enlarged diagram of point A in the middle.

[0024] Reference numerals in the attached drawings: 1. Base; 2. Screw compressor body; 3. Filter chamber; 4. Chamber door; 5. Dust guide frame; 6. Dust collection box; 7. Fixing frame; 8. Air inlet pipe; 9. Slide groove; 10. Movable frame; 11. First connecting pipe; 12. Nut; 13. Screw; 14. Connecting shaft; 15. Torsion spring; 16. Baffle; 17. Drive motor; 18. Turntable; 19. Connecting block; 20. Filter element limiting frame; 21. Connecting strip; 22. Filter element baffle; 23. First filter element limiting ring; 24. Second filter element limiting ring; 25. Filter box; 26. Second connecting pipe. Detailed Implementation

[0025] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0026] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0028] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0029] Please see Figure 1-5 This utility model provides a technical solution: a dust filtration device for a screw compressor, including a base 1, a screw compressor body 2, a filter chamber 3, and a filter assembly. The filter assembly is disposed inside the screw compressor body 2 and includes a fixing frame 7, which is fixedly connected to the inside of the filter chamber 3. Two sliding grooves 9 are formed on the surface of the fixing frame 7, which drives a movable frame 10 disposed inside. Two screws 13 are fixedly connected to the upper end of the movable frame 10. The ends of the two screws 13 near the movable frame 10 are both square, and the two screws 13 respectively correspond to the sliding grooves 9. The sliding connection is provided. Nuts 12 are threaded onto the surfaces of both screws 13. A first connecting pipe 11 is fixedly connected to the right side of the movable frame 10. A drive motor 17 is fixedly connected to the left side of the fixed frame 7. A turntable 18 is fixedly connected to the output end of the drive motor 17. A connecting block 19 is fixedly connected to the surface of the turntable 18. The connecting block 19 is hexagonal prism-shaped. A filter element limiting frame 20 is provided inside the fixed frame 7. The filter element limiting frame 20 is engaged with the connecting block 19. A filter element baffle 22 is engaged at the end of the filter element limiting frame 20 away from the turntable 18. The filter element baffle 22 is rotatably connected to the movable frame 10.

[0030] The filter assembly also includes a connecting shaft 14, which is rotatably connected inside the fixed frame 7. A baffle 16 is fixedly connected to the surface of the connecting shaft 14, and a torsion spring 15 is sleeved on the surface of the connecting shaft 14. The two ends of the torsion spring 15 are fixedly connected to the fixed frame 7 and the baffle 16, respectively. The end of the baffle 16 near the filter element limiting frame 20 is provided with a rounded corner. Multiple connecting strips 21 are fixedly connected to the surface of the filter element limiting frame 20. A dust guide frame 5 is fixedly connected inside the filter chamber 3, and a dust collection box 6 is slidably connected inside the filter chamber 3. A filter element is disposed inside the filter element limiting frame 20.

[0031] The filter element limiting frame 20 has multiple ventilation grooves on its surface. A first filter element limiting ring 23 is fixedly connected inside the filter element limiting frame 20. A second filter element limiting ring 24 is fixedly connected to one end of the filter element baffle 22 near the turntable 18. Both the first filter element limiting ring 23 and the second filter element limiting ring 24 are used to fix the filter element.

[0032] The front end of the filter chamber 3 is hinged with a door 4, and the filter chamber 3 drives the air inlet pipe 8 which is fixedly connected to the left side.

[0033] A filter box 25 is fixedly connected inside the filter chamber 3. Multiple filter screens are installed inside the filter box 25. The end of the first connecting pipe 11 away from the fixed frame 7 is fixedly connected to the filter box 25.

[0034] A second connecting pipe 26 is fixedly connected to the left side of the filter box 25. The second connecting pipe 26 extends out of the filter chamber 3 and is connected to the air inlet end of the screw compressor body 2.

[0035] When using this device, firstly, the screw compressor body 2 is started to draw air from the intake pipe 8 into the interior of the filter chamber 3, and the air enters the interior through the air permeable groove on the surface of the filter element limiting frame 20. The air is then filtered by the filter element, and then the filtered air is introduced into the interior of the first connecting pipe 11 and undergoes secondary filtration through the filter screen on the inner wall of the filter box 25. Then, the secondary filtered air is introduced into the interior of the screw compressor body 2 through the second connecting pipe 26, so that the screw compressor body 2 can be used to compress the air, and the compressed gas is discharged from the outlet end of the screw compressor body 2.

[0036] During operation, the screw compressor body 2 relies on the male and female rotors that mesh parallel to each other inside the casing. When these rotors rotate inside the casing, the volume of the tooth grooves between them changes, thereby realizing the intake, compression and discharge of gas.

[0037] After a period of use, the filter element inside the filter element limiting frame 20 will accumulate a lot of dust and impurities on its surface. When there is a lot of dust and impurities, it is easy to cause filter element blockage, thereby reducing the air intake from the filter element. At this time, the drive motor 17 is started to drive the turntable 18 to rotate counterclockwise. The turntable 18 drives the connecting block 19 to rotate. Since the connecting block 19 is hexagonal prism-shaped, it is easy to drive the filter element limiting frame 20 and the filter element baffle 22 to rotate counterclockwise. The filter element limiting frame 20 and the filter element baffle 22 respectively drive the first filter element limiting ring 23 and the second filter element limiting ring 24 to rotate, thereby driving the filter element to rotate. During the rotation of the filter element limiting frame 20, the connecting strip 21 will rotate. During the rotation of the connecting strip 21, the connecting strip 21 will squeeze the baffle 16, causing the baffle 16 to be squeezed. Under the pressure of the connecting strip 21, the connecting shaft 14 rotates inside the fixed frame 7. Due to the setting of the torsion spring 15, the baffle 16 twists the torsion spring 15. During the twisting process of the baffle 16, the torsion spring 15 will exert a torque in the opposite direction on the baffle 16. When the connecting strip 21 passes the baffle 16, the baffle 16 will reset under the action of the torsion spring 15, so that the baffle 16 knocks on the surface of the filter element limiting frame 20, causing the filter element limiting frame 20 to vibrate to a certain extent. The filter element limiting frame 20 transmits the vibration to the filter element inside it. Under the action of vibration, the impurities and dust on the surface of the filter element are shaken off, which facilitates the cleaning of dust and impurities on the surface of the filter element, reduces the impurity content on the surface of the filter element, and improves the filtration efficiency and effect of the filter element.

[0038] As the filter element rotates counterclockwise under the drive of the filter element limiting frame 20, it vibrates during rotation, which helps to shake off dust and impurities on the surface of the filter element and onto the inner wall of the filter element limiting frame 20. Since the surface of the filter element limiting frame 20 has ventilation grooves, the impurities and dust shaken off from the filter element can fall from the ventilation grooves to the lower end of the filter chamber 3. Then, through the dust guide frame 5, the dust and impurities are guided to the interior of the dust collection box 6, which facilitates the cleaning of dust and impurities. This helps to filter out dust, particles, sand and other impurities in the air, preventing these impurities from being sucked into the compressor and accelerating the wear of the screw or star wheel, keeping the filter element clean and effective, and extending the service life of the filter element and the compressor.

[0039] Since some impurities and dust may be difficult to clean and shake off during the use of the filter element due to the impact of the baffle 16, in this case, simply remove the nut 12 at the upper end of the movable frame 10 from the screw 13 and separate the movable frame 10 from the fixed frame 7. This facilitates the disassembly of the movable frame 10, the disassembly of the filter element baffle 22 on the right side of the filter element limiting frame 20, and the removal of the filter element from the inside of the filter element limiting frame 20. This makes it easier to clean or replace the filter element, ensures the stable operation of the compressor, extends its service life, and improves working efficiency. It also maintains the cleanliness and filtration efficiency of the filter element, ensuring that the compressor always maintains a good working condition and extending the service life of the screw compressor body 2.

[0040] Furthermore, by rotating the filter element limiting frame 20 and tapping the filter element limiting frame 20 with the baffle 16, dust and impurities on the surface of the filter element are easily shaken off. At the same time, the dust guide frame 5 and the dust collection box 6 facilitate the flow of dust and impurities into the dust collection box 6 for easy cleaning. When there are too many impurities on the surface of the filter element, the filter element can be removed from the inside of the filter element limiting frame 20 by disassembling the nut 12 and the screw 13 for easy cleaning or replacement. This ensures the stable operation of the compressor, extends its service life, and improves working efficiency. It also maintains the cleanliness and filtration efficiency of the filter element, ensuring that the compressor always maintains a good working condition and extending the service life of the screw compressor body 2.

[0041] After the air is filtered by the filter element, it undergoes secondary filtration through the filter screen inside the filter box 25. This secondary filtration effectively removes impurities and dust, protecting the internal structure of the compressor, further improving air quality, and thus extending the service life of the screw compressor body 2 and improving its performance.

[0042] Structural Description: Base 1: The main structure of the device, which supports the screw compressor body 2 and the filter chamber 3, ensuring stable operation of the device;

[0043] Screw compressor body 2: The screw compressor body 2 relies on the male and female rotors that mesh with each other in parallel inside the casing. When these rotors rotate inside the casing, the volume of the tooth grooves between them changes, thereby realizing the intake, compression and discharge of gas.

[0044] Filter chamber 3: Fixed to the upper end of the base 1, it can filter dust and impurities in the air. The filter chamber 3 is equipped with filter element and filter screen to facilitate secondary filtration of air, reduce the content of dust and impurities in the air, prevent dust and impurities from entering the interior of the screw compressor body 2, and extend the service life of the screw compressor body 2.

[0045] Dust guide frame 5: Fixed inside the filter chamber 3, it can guide the dust and impurities shaken off from the filter element limiting frame 20, so as to guide the dust and impurities into the dust collection box 6.

[0046] Dust collection box 6: The dust collection box 6 is slidably connected to the inside of the filter chamber 3, which facilitates the collection and storage of dust and impurities guided by the dust guide frame 5;

[0047] Mounting bracket 7: Fixed inside the filter chamber 3, it supports the filter assembly.

[0048] Slide 9: The slide 9 is formed on the surface of the fixed frame 7 to guide the movement of the movable frame 10 and the screw 13;

[0049] Movable frame 10: Located inside the fixed frame 7, it can work with the fixed frame 7 to limit the filter element limiting frame 20, making it easy to fix the filter element;

[0050] First connecting pipe 11: Located inside the filter chamber 3, used to connect the filter box 25 and the movable frame 10.

[0051] Nut 12 and screw 13: Screw 13 is fixed to the upper end of the movable frame 10. When used in conjunction with nut 12, it is convenient to fix the movable frame 10 inside the fixed frame 7.

[0052] Connecting shaft 14, torsion spring 15 and baffle 16: The connecting shaft 14 is rotatably connected inside the fixed frame 7, which can provide support for the rotation of the baffle 16. At the same time, in conjunction with the use of the torsion spring 15, it is convenient for the baffle 16 to reciprocate and strike the surface of the filter element limiting frame 20.

[0053] Drive motor 17: Fixed on the left side of the fixing frame 7, it can provide power for the rotation of the filter element limiting frame 20 and the filter element;

[0054] Turntable 18 and connecting block 19: Turntable 18 is fixed to the output end of drive motor 17, and connecting block 19 is fixed to the surface of turntable 18. The connecting block 19 is hexagonal prism-shaped, which facilitates transmission during the rotation of filter element limiting frame 20.

[0055] Filter element limiting frame 20: It is set inside the fixed frame 7. Multiple ventilation grooves and connecting strips 21 are opened on its surface, which facilitates the connecting strips 21 to squeeze the baffle 16 during rotation, so that the baffle 16 can strike the surface of the filter element limiting frame 20.

[0056] Filter element baffle 22: It is snapped onto the filter element limiting frame 20 and can work with the filter element limiting frame 20 to fix and limit the filter element;

[0057] Filter box 25: Fixed in filter chamber 3, it can perform secondary filtration of air, further reduce the impurity content in the air, and improve the cleanliness of the air.

[0058] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A dust filtration device for a screw compressor, characterized in that: It includes a base (1), a screw compressor body (2), and a filter chamber (3); The filter assembly is located inside the screw compressor body (2). The filter assembly includes a fixed frame (7), which is fixedly connected to the inside of the filter chamber (3). Two sliding grooves (9) are opened on the surface of the fixed frame (7). The fixed frame (7) drives a movable frame (10) which is set inside. Two screws (13) are fixedly connected to the upper end of the movable frame (10). The ends of the two screws (13) near the movable frame (10) are square. The two screws (13) are slidably connected to the corresponding sliding grooves (9). Nuts (12) are threaded onto the surface of the two screws (13). The right side of the movable frame (10) is fixedly connected to the first connecting pipe (11), the left side of the fixed frame (7) is fixedly connected to the drive motor (17), the output end of the drive motor (17) is fixedly connected to the turntable (18), and the surface of the turntable (18) is fixedly connected to the connecting block (19), which is hexagonal prism. The fixed frame (7) is provided with a filter element limiting frame (20), which is snapped into the connecting block (19). The filter element limiting frame (20) is snapped into a filter element baffle (22) at the end of the filter element limiting frame (20) away from the turntable (18), and the filter element baffle (22) is rotatably connected to the movable frame (10).

2. The dust filtration device for a screw compressor according to claim 1, characterized in that: The filter assembly also includes a connecting shaft (14), which is rotatably connected inside the fixed frame (7). A baffle (16) is fixedly connected to the surface of the connecting shaft (14), and a torsion spring (15) is sleeved on the surface of the connecting shaft (14). The two ends of the torsion spring (15) are fixedly connected to the fixed frame (7) and the baffle (16) respectively. The baffle (16) has a rounded corner at one end near the filter element limiting frame (20). Multiple connecting strips (21) are fixedly connected to the surface of the filter element limiting frame (20), a dust guide frame (5) is fixedly connected inside the filter chamber (3), a dust collection box (6) is slidably connected inside the filter chamber (3), and a filter element is installed inside the filter element limiting frame (20).

3. The dust filtration device for a screw compressor according to claim 1, characterized in that: The filter element limiting frame (20) has multiple air vents on its surface. A first filter element limiting ring (23) is fixedly connected inside the filter element limiting frame (20). A second filter element limiting ring (24) is fixedly connected to one end of the filter element baffle (22) near the turntable (18). The first filter element limiting ring (23) and the second filter element limiting ring (24) are both used to fix the filter element.

4. The dust filtration device for a screw compressor according to claim 1, characterized in that: The front end of the filter chamber (3) is hinged with a door (4), and the filter chamber (3) drives the air inlet pipe (8) which is fixedly connected to the left side.

5. A dust filtration device for a screw compressor according to claim 1, characterized in that: The filter chamber (3) is fixedly connected to a filter box (25), and multiple filter screens are installed inside the filter box (25). The end of the first connecting pipe (11) away from the fixed frame (7) is fixedly connected to the filter box (25).

6. A dust filtration device for a screw compressor according to claim 5, characterized in that: A second connecting pipe (26) is fixedly connected to the left side of the filter box (25). The second connecting pipe (26) extends out of the filter chamber (3) and is connected to the air inlet of the screw compressor body (2).

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