Discharge device for screw compressor with equal flow distribution
By introducing a baffle assembly into the exhaust device of the screw compressor, the problems of uneven airflow and unstable pressure pulses are solved, achieving uniform output of the exhaust branch pipe and efficient utilization of the gas source.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI WOYO SUPERDO COMPRESSOR
- Filing Date
- 2025-07-16
- Publication Date
- 2026-05-26
Smart Images
Figure CN224282938U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of compressor technology, and in particular to an exhaust device for a screw compressor with uniform flow. Background Technology
[0002] An air compressor is a power device that compresses atmospheric air into high-pressure gas through mechanical work, and is widely used in industrial manufacturing, construction engineering, and other fields. Among them, the screw compressor, as a typical representative of positive displacement compressors, utilizes the meshing motion of male and female screws to periodically reduce the inter-tooth volume, thereby achieving gas compression. Existing screw compressors conventionally control the exhaust direction through a slide valve, but their radial and axial exhaust ports are independently set, resulting in a single unit only being able to exhaust in one direction. Furthermore, the compressed gas, after being directly discharged through the exhaust port, can only supply a single pipeline, leading to low gas source utilization.
[0003] The exhaust device disclosed in Chinese Patent Application No. 202221649398.8 solves the "single exhaust direction" problem to some extent by incorporating a component including a buffer box and multiple exhaust branches at the exhaust port, allowing compressed gas to be buffered in the buffer box and then diverted through the multiple branches. However, this solution has a drawback:
[0004] It relies solely on the volume of the buffer box to achieve uniform airflow velocity, without addressing the periodic pressure pulses generated by the screw rotor meshing. This results in unstable exhaust pressure in the rear branch pipe, with the output airflow varying in intensity, causing the pneumatic devices driven by each branch pipe to experience inconsistent power. Utility Model Content
[0005] To address the aforementioned technical problems, the present invention provides an exhaust device for a screw compressor that can ensure uniform airflow, thereby achieving uniform air output from each rear branch pipe.
[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0007] This utility model provides an exhaust device for a screw compressor with uniform flow, comprising a screw compressor and an exhaust assembly; the screw compressor has an inlet and an outlet; the exhaust assembly includes a mounting part and an exhaust part; the mounting part is hollow and adapted to the outlet; the hollow part of the mounting part communicates with the outlet; the exhaust part includes multiple exhaust branch pipes; the exhaust branch pipes communicate with the hollow part of the mounting part; the mounting part includes an inlet pipe, a buffer box, and a guide plate assembly; the inlet of the inlet pipe communicates with the outlet; the buffer box communicates with the outlet of the inlet pipe; the buffer box communicates with the exhaust branch pipes; the guide plate assembly includes multiple guide plates; the guide plates are disposed inside the buffer box; the guide plates are spaced apart; adjacent guide plate surfaces are opposite each other; a guide channel is formed between adjacent guide plates; each guide channel corresponds one-to-one with each exhaust branch pipe; the inlet of the guide channel is positioned opposite the outlet of the inlet pipe; the outlet of the guide channel is positioned opposite the inlet of the exhaust branch pipe.
[0008] The exhaust device for a screw compressor with uniform flow provided by this utility model preferably has the guide plate rotatably fixed inside the buffer box.
[0009] The present invention provides an exhaust device for a screw compressor with uniform flow. Preferably, the guide plate includes a guide plate body, a screw, two sealing plates, and two locking nuts. The buffer box has multiple connection holes. The guide plate body is fixed to the screw. The surface of the guide plate body is parallel to the shaft axis of the screw. Rotation of the screw can change the angle between the surface of the guide plate and adjacent guide plate surfaces. Both ends of the screw pass through the connection holes of the buffer box. The screw can rotatably pass through the connection holes. A locking nut is fixed to each end of the screw. Tightening the locking nuts presses the sealing plates against the outer wall of the buffer box.
[0010] The exhaust device for a screw compressor with uniform flow provided by this utility model preferably has a guide line at the end of the screw; the guide line is parallel to the surface of the guide plate; the guide line passes through the shaft of the screw; the outer wall of the buffer box is provided with a scale; the scale is arranged in a circumferential array with the axis of the connecting hole as the center.
[0011] The exhaust device for a screw compressor that can achieve uniform flow provided by this utility model preferably has multiple flow guide holes on the guide plate body.
[0012] The above technical solution has the following advantages or beneficial effects:
[0013] This utility model provides an exhaust device for a screw compressor with uniform flow, relating to the field of compressor technology, including a screw compressor and an exhaust assembly; the screw compressor has an inlet and an outlet; the exhaust assembly includes a mounting part and an exhaust part; the mounting part is hollow and adapted to the outlet; the hollow part of the mounting part communicates with the outlet; the exhaust part includes multiple exhaust branch pipes; the exhaust branch pipes communicate with the hollow part of the mounting part; the mounting part includes an inlet pipe, a buffer box, and a guide plate assembly; the inlet of the inlet pipe communicates with the outlet; the buffer box communicates with the outlet of the inlet pipe; the buffer box communicates with the exhaust branch pipes; the guide plate assembly includes multiple guide plates; the guide plates are disposed inside the buffer box; the guide plates are spaced apart; adjacent guide plate surfaces are opposite each other; a guide channel is formed between adjacent guide plates; each guide channel corresponds one-to-one with each exhaust branch pipe; the inlet of the guide channel is positioned opposite the outlet of the inlet pipe; the outlet of the guide channel is positioned opposite the inlet of the exhaust branch pipe. The exhaust device for screw compressors with uniform flow provided by this utility model solves the problem of uneven output gas pressure in the various rear branch pipes of multi-outlet screw compressors in the prior art, and can make the gas output effect of each rear branch pipe uniform. Attached Figure Description
[0014] The present invention, its features, shape, and advantages will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference numerals denote like parts throughout the drawings. The drawings are not intentionally drawn to scale; the focus is on illustrating the gist of the invention.
[0015] Figure 1 This is a schematic diagram of the overall structure of the exhaust device for a screw compressor with uniform flow provided in Embodiment 1 of this utility model.
[0016] Figure 2 This is a cross-sectional view of the guide plate of the exhaust device for a screw compressor with uniform flow provided in Embodiment 1 of this utility model, which is located inside a buffer box.
[0017] Figure 3 This is a schematic diagram of the connection structure between the guide plate body and the screw of the exhaust device for a screw compressor with uniform flow provided in Embodiment 1 of this utility model.
[0018] Figure 4 This is a schematic diagram of the exhaust assembly structure of the exhaust device for a screw compressor with uniform flow provided in Embodiment 1 of this utility model. Detailed Implementation
[0019] Example 1:
[0020] The exhaust device for a screw compressor with flow equalization provided in Embodiment 1 of this utility model, such as... Figures 1 to 4 As shown, the device includes a screw compressor 1 and an exhaust assembly 2. The screw compressor 1 has an inlet 11 and an exhaust port 12. The exhaust assembly 2 includes a mounting part 21 and an exhaust part 22. The mounting part 21 is hollow and adapted to the exhaust port 12. The hollow part of the mounting part 21 communicates with the exhaust port 12. The exhaust part 22 includes multiple exhaust branch pipes 221. The exhaust branch pipes 221 communicate with the hollow part of the mounting part 21. The mounting part 21 includes an inlet pipe 211, a buffer box 212, and a baffle assembly 213. The inlet of the inlet pipe 211 is connected to the exhaust port 12. The buffer box 212 is connected to the outlet of the intake pipe 211; the buffer box 212 is connected to the exhaust branch pipe 221; the guide plate assembly 213 includes multiple guide plates 3; the guide plates 3 are disposed inside the buffer box 212; the guide plates 3 are spaced apart; the surfaces of adjacent guide plates 3 are arranged opposite each other; a guide channel is formed between adjacent guide plates 3; each guide channel corresponds one-to-one with each exhaust branch pipe 221; the inlet of the guide channel is set opposite to the outlet of the intake pipe 211; the outlet of the guide channel is set opposite to the inlet of the exhaust branch pipe 221.
[0021] In this embodiment, the exhaust device for a screw compressor with uniform flow capability is used to deliver compressed air generated by the screw compressor 1 from the exhaust port 12 during actual operation. The compressed air then enters the buffer box 212 through the intake pipe 211. The air is then guided by the guide plates 3 inside the buffer box 212. Specifically, the gas entering the buffer box 212 is divided by the guide plates 3 towards the edge of the intake pipe 211 outlet, thus entering each guide channel. The gas is then guided through the guide channels and enters each exhaust branch pipe 221. Compared to the prior art structure where the gas directly enters the buffer box 212 and then flows into the exhaust branch pipe 221, this embodiment allows the gas output by the screw compressor 1 to be guided in the buffer box 212, affecting the airflow direction. This allows the gas output by the screw compressor 1 to enter each exhaust branch pipe in a more precise proportion (not only simply distributing the gas evenly to different exhaust branch pipes 221, but also, for situations where different amounts of gas need to be output from each exhaust branch pipe 221, the structure of this embodiment can also achieve this by controlling the spacing and angle between the guide plates 3).
[0022] The exhaust device for a screw compressor with uniform flow provided in Embodiment 1 of this utility model solves the problem of uneven output gas pressure in the various rear branch pipes of a multi-outlet screw compressor in the prior art, and can make the gas output effect of each rear branch pipe uniform.
[0023] As a preferred embodiment, in this case, the guide plate 3 is rotatably fixed inside the buffer box 212. By rotating the guide plate 3, the shape of the guide channel will change, and the output gas volume of each exhaust branch pipe 221 corresponding to different guide channels will change. The guide plate 3 can be rotated relative to the buffer box 212 according to actual needs.
[0024] To specifically achieve the rotation of the guide plate 3 relative to the buffer box 212, as a preferred structure in this embodiment, the guide plate 3 includes a guide plate body 31, a screw 32, two sealing plates 33, and two locking nuts 34; the buffer box 212 has multiple connecting holes 2121; the guide plate body 31 is fixed to the screw 32; the plate surface of the guide plate body 31 is parallel to the shaft of the screw 32; the rotation of the screw 32 can change the angle between the plate surface of the guide plate 3 and the adjacent plate surface; both ends of the screw 32 pass through the connecting holes 2121 of the buffer box 212; the screw 32 can rotatably pass through the connecting holes 2121; each end of the screw 32 is fitted with a locking nut 34; after the locking nuts 34 are tightened, they can press the sealing plates 33 against the outer wall of the buffer box 212. In the structure provided in this embodiment, the exhaust port 12 of the screw compressor 1 and the mounting part 21... The screw 32 of the baffle assembly 213 extends outside the buffer box 212. The outer casing of the screw compressor 1 has a channel for the screw 32 to pass through, ensuring that the intake pipe 211 can be sealed and connected to the outlet of the exhaust port 12. The mounting part 21 is fixed inside the exhaust port 12 for limiting and fixing. In specific adjustment, the mounting part 21 needs to be separated from the exhaust port 12 first. Then, by rotating the screw 32 that extends out of the buffer box 212 (with the axis of the screw 32 as the pivot) outside the buffer box 212, the angle of the baffle body 31 connected to the screw 32 is adjusted, so that the angle between the baffle body 31 and the adjacent baffle body 31 changes. This changes the size of the inlet of the guide channel, thereby altering the amount of gas entering the channel. Most of the gas entering the guide channel is diverted to the exhaust branch pipe 221 corresponding to this guide channel. When it is necessary to fix the screw 32 relative to the buffer box 212, the rotation of the screw 32 is restricted by the locking nut 34. The axial pressing force between the locking nut 34 and the buffer box 212 creates friction on the plate surface of the buffer box 212, restricting the rotation of the screw 32. The sealing plate 33 is located between the locking nut 34 and the buffer box 212 to seal the gas inside the buffer box 212, reducing the amount of gas flowing out of the buffer box 212 from the connection hole 2121. After the guide plate body 31 is adjusted, the output gas pressure of each exhaust branch pipe 221 can be monitored during subsequent use, and the rotation direction and angle of the screw 32 can be adjusted according to the monitoring data.
[0025] As a preferred embodiment, in this case, a guide line is provided at the end of the screw 32; the guide line is parallel to the surface of the guide plate 3; the guide line passes through the shaft of the screw; the outer wall of the buffer box 212 is provided with a scale; the scale is arranged in a circumferential array on the opening plane of each of the connecting holes 2121. In actual operation, when the screw 32 rotates relative to the buffer box 212, since the guide plate body 31 is inside the buffer box 212, it is difficult for the operator to directly observe the rotation angle of the guide plate body 31. By providing a scale on the outer wall of the buffer box 212 and aligning the scale with the guide line on the screw 32, adjustment is convenient.
[0026] In this embodiment, the guide plate body 31 is provided with multiple guide holes 311. After the pulsed airflow discharged from the screw compressor 1 is initially divided by the guide plate body 31, it can be further refined into multiple small streams through the guide holes 311, which disperses the originally concentrated pressure fluctuations, thereby reducing the airflow pulse amplitude at the outlet of each guide channel, and making the air pressure output by each exhaust branch pipe 221 more uniform and stable.
[0027] In summary, this utility model provides an exhaust device for a screw compressor with uniform flow, relating to the field of compressor technology, including a screw compressor and an exhaust assembly; the screw compressor has an inlet and an outlet; the exhaust assembly includes a mounting part and an exhaust part; the mounting part is hollow and adapted to the exhaust outlet; the hollow portion inside the mounting part communicates with the exhaust outlet; the exhaust part includes multiple exhaust branch pipes; the exhaust branch pipes communicate with the hollow portion inside the mounting part; the mounting part includes an inlet pipe, a buffer box, and a guide plate assembly; the inlet... The air inlet is connected to the exhaust outlet; the buffer box is connected to the air inlet outlet; the buffer box is connected to the exhaust branch pipe; the guide plate assembly includes multiple guide plates; the guide plates are disposed inside the buffer box; the guide plates are spaced apart; adjacent guide plate surfaces are arranged opposite each other; a guide channel is formed between adjacent guide plates; each guide channel corresponds one-to-one with each exhaust branch pipe; the inlet of the guide channel is positioned opposite the air inlet outlet; the outlet of the guide channel is positioned opposite the exhaust branch pipe inlet. The exhaust device for a screw compressor with uniform flow provided by this utility model solves the problem of uneven output air pressure in the various rear branch pipes of a multi-outlet screw compressor in the prior art, enabling uniform air output from each rear branch pipe.
[0028] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.
Claims
1. A discharge device for a screw compressor capable of uniform flow, comprising a screw compressor and a discharge assembly; the screw compressor having an inlet and an outlet; the discharge assembly comprising a mounting portion and a discharge portion; the mounting portion being hollow and adapted to the outlet; the hollow portion of the mounting portion communicating with the outlet; the discharge portion comprising a plurality of discharge branch pipes; the discharge branch pipes communicating with the hollow portion of the mounting portion; Its features are, The mounting section includes an air intake pipe, a buffer box, and a deflector assembly; The intake pipe inlet is connected to the exhaust port; the buffer box is connected to the intake pipe outlet; the buffer box is connected to the exhaust branch pipe. The guide vane assembly includes multiple guide vanes; the guide vanes are disposed inside the buffer box; the guide vanes are spaced apart; adjacent guide vane surfaces are arranged opposite each other; a guide channel is formed between adjacent guide vanes; each guide channel corresponds one-to-one with each exhaust branch pipe. The inlet of the flow guide channel is positioned directly opposite the outlet of the air intake pipe; the outlet of the flow guide channel is positioned directly opposite the inlet of the exhaust branch pipe.
2. The discharge device for a screw compressor with flow equalization as described in claim 1, characterized in that, The guide plate is rotatably fixed inside the buffer box.
3. The discharge device for a screw compressor with flow equalization as described in claim 2, characterized in that, The guide plate includes a guide plate body, a screw, two sealing plates, and two locking nuts; the buffer box has multiple connection holes. The guide plate body is fixed on the screw; the plate surface of the guide plate body is parallel to the shaft of the screw; the rotation of the screw can change the angle between the plate surface of the guide plate and the adjacent plate surface; both ends of the screw pass through the connection hole of the buffer box; the screw can rotate through the connection hole; a locking nut is fixed at both ends of the screw; after the locking nut is tightened, the sealing plate can be pressed against the outer wall of the buffer box.
4. The discharge device for a screw compressor with flow equalization as described in claim 2, characterized in that, A guide line is provided at the end of the screw; the guide line is parallel to the surface of the guide plate; the guide line passes through the shaft of the screw; The outer wall of the buffer box is provided with a scale; the scale is arranged in a circular array with the axis of the connecting hole as the center.
5. The discharge device for a screw compressor with flow equalization as described in claim 3, characterized in that, The guide plate body has multiple guide holes.