CN210769318U - Interstage pressure adjusting structure of two-stage screw air compressor - Google Patents
Interstage pressure adjusting structure of two-stage screw air compressor Download PDFInfo
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- CN210769318U CN210769318U CN201921759000.4U CN201921759000U CN210769318U CN 210769318 U CN210769318 U CN 210769318U CN 201921759000 U CN201921759000 U CN 201921759000U CN 210769318 U CN210769318 U CN 210769318U
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Abstract
The utility model provides a two-stage screw air compressor's interstage pressure regulation structure, this structure can change interstage pressure (also being called the exhaust pressure of first order host computer) through the inspiratory capacity of adjusting the second level host computer, improves the load of first order host computer rotor to eliminate noise and vibration that the first order host computer produced under the uninstallation operating mode. The air compressor is provided with a first-stage main machine, a second-stage main machine and an oil separation barrel along the air flowing direction, wherein a rotor of the first-stage main machine is connected with a rotor of the second-stage main machine through a connecting structure, a compression cavity of the second-stage main machine is communicated with an air suction cavity of the second-stage main machine through a bypass flow channel, a valve plate is pressed on the bypass flow channel and a backflow connecting port of the compression cavity of the second-stage main machine, and the valve plate is installed on a.
Description
Technical Field
The utility model relates to a compressor technical field, concretely relates to two-stage screw air compressor's interstage pressure adjustment structure.
Background
The screw air compressor generally has a single-stage or multi-stage compression structure according to different compression characteristics, wherein the multi-stage compression mainly adopts two-stage compression, and the two-stage compression process is closer to isothermal compression, so that theoretically, compared with the single-stage compression, the screw air compressor is more energy-saving, and therefore, the screw air compressor is more and more widely applied.
When the two-stage screw air compressor operates, loading or unloading adjustment needs to be carried out according to the characteristics of load, when the two-stage screw air compressor is under the unloading working condition, the stress of a first-stage main machine rotor and a bearing can be obviously changed, the first-stage main machine rotor and the bearing are in a light-load state, the instability of the screw rotor is easily caused, the noise vibration is increased, the service life of the bearing can be shortened, the product quality is obviously influenced, the stress of the first-stage main machine rotor needs to be further optimized, and the noise and the vibration generated in the unloading process of the compressor are reduced.
SUMMERY OF THE UTILITY MODEL
To two-stage screw air compressor under the uninstallation operating mode, the easy unstability of first order host computer rotor to the shortcoming that leads to noise and vibration, the utility model provides a two-stage screw air compressor's interstage pressure regulation structure, this structure can change interstage pressure (also be called the exhaust pressure of first order host computer) through the inspiratory capacity of adjusting the second level host computer, improves the load of first order host computer rotor, thereby eliminates noise and vibration that first order host computer produced under the uninstallation operating mode.
The utility model provides a following technical scheme:
the utility model provides a two-stage screw air compressor's interstage pressure control structure, its along the air flow direction be provided with first order host computer, second level host computer and oil branch bucket, wherein first order host computer rotor and second level host computer rotor pass through connection structure and link to each other its characterized in that: the second-stage host compression cavity and the second-stage host suction cavity are communicated through a bypass flow channel, a valve plate is pressed on a backflow connecting port of the second-stage host compression cavity through the bypass flow channel, and the valve plate is installed on the movable structure.
It is further characterized in that:
the movable structure comprises a valve rod, the valve plate is mounted at one end of the valve rod, the valve rod penetrates through a flange, the other end of the valve rod is mounted on a piston, the piston is mounted on a hydraulic cylinder, the hydraulic cylinder is driven by oil pressure or air pressure, the flange is mounted on the second-stage host through a positioning pin, and the hydraulic cylinder is mounted on the flange through the positioning pin;
the rear end of the hydraulic cylinder is provided with a loading connecting port, the front end of the hydraulic cylinder is provided with an unloading connecting port, and the loading connecting port and the unloading connecting port are respectively communicated with the oil drum and the first-stage main engine air suction cavity through two-position four-way electromagnetic valves;
the backflow connecting port is provided with a guide post, the valve plate is provided with a guide hole, and the guide hole penetrates through the guide post.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the utility model adopts the bypass flow channel and the valve plate to adjust the interstage pressure of the two-stage screw compressor, when unloading, the valve plate is opened, the compressed gas in the compression cavity of the second-stage main machine flows into the suction cavity of the second-stage main machine through the bypass flow channel, thereby realizing the function of reducing the suction volume of the second-stage main machine, achieving the purpose of adjusting the interstage pressure (the exhaust pressure of the first-stage main machine), weakening or even eliminating the noise and vibration of the rotor of the first-stage main machine caused by light load instability;
the loading connector is connected with the oil separation barrel, when the unloading connector is connected with the first-stage host air suction cavity, the valve plate is in a closed state, when the compressor needs to be unloaded, the two-position four-way solenoid valve changes to be in an electric state, the loading connector is connected with the first-stage host air suction cavity, the unloading connector is connected with the oil separation barrel, the valve plate is in an open state, compressed air in the second-stage host compression cavity flows into the second-stage host air suction cavity through the bypass flow channel, the purpose of reducing the air suction quantity of the second-stage host is achieved, the interstage pressure is improved, and the vibration of the first-stage host rotor, which is caused by light load instability.
Drawings
Fig. 1 is a schematic front sectional view of the compressor of the present invention;
FIG. 2 is a schematic front sectional view of the second stage mainframe of the present invention;
FIG. 3 is a schematic view of the gas circuit of the present invention;
in the figure: 1, a first-level host; 11 a first-stage main engine air suction cavity; 12 a first stage main engine rotor; 2 a second level host; 21 a second-stage host air suction cavity; 22 a second stage main machine rotor; 23 a second stage main engine compression chamber; 3, separating oil into barrels; 4, a connecting structure; 5, bypassing the flow channel; a 51 return connection port; 52 a guide post; 6 a valve plate; 61, a guide hole; 7 moving the structure; 71 a valve stem; 72 a flange; 73 a piston; 74 hydraulic cylinders; 741 loading connection port; 742 unloading the connection port; 743 two-position four-way solenoid valve; and 75, positioning pins.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, an interstage pressure regulating structure of a two-stage screw air compressor is provided with a first-stage main unit 1, a second-stage main unit 2 and an oil content barrel 3 along an air flowing direction, wherein a first-stage main unit rotor 12 and a second-stage main unit rotor 22 are connected through a connecting structure 4, a second-stage main unit compression cavity 23 and a second-stage main unit suction cavity 21 are communicated through a bypass flow channel 5, a valve plate 6 is pressed on the bypass flow channel 5 and a backflow connecting port 51 of the second-stage main unit compression cavity 23, a guide post 52 is installed at the backflow connecting port 51, a guide hole 61 is formed in the valve plate 6, and the guide hole 61 penetrates through the guide post 52. The valve plate 6 is mounted on the moving structure 7, the moving structure 7 includes a valve rod 71, the valve plate 6 is mounted at one end of the valve rod 71, the valve rod 71 passes through a flange 72, the other end of the valve rod is mounted on a piston 73, the piston 73 is mounted on a hydraulic cylinder 74, the hydraulic cylinder 74 is driven by oil pressure and air pressure, the flange 72 is mounted on the second-stage main machine 2 through a positioning pin 75, the hydraulic cylinder 74 is mounted on the flange 72 through the positioning pin 75, a loading connecting port 741 is formed at the rear end of the hydraulic cylinder 74, an unloading connecting port 742 is formed at the front end of the hydraulic cylinder 74, and the loading connecting port 741 and the unloading connecting.
The utility model discloses a bypass flow channel 5 and valve plate 6 adjust two-stage screw compressor's interstage pressure, loading connector 741 links to each other with oil content bucket 3, when uninstallation connector 742 links to each other with first order host computer suction cavity 11, valve plate 6 is in the closed condition, when the compressor needs the uninstallation operation, two four-way solenoid valve 743 changes the state that has got electric, it links to each other with first order host computer suction cavity 11 to realize loading connector 741, uninstallation connector 742 links to each other with oil content bucket 3, valve plate 6 is in the open mode, compressed gas in second level host computer compression chamber 23 flows into second level host computer suction cavity 21 through bypass flow channel 5, realize reducing the function of second level host computer 2 inspiratory capacity, reach regulation interstage pressure (first order host computer 1 exhaust pressure), weaken or even eliminate first level host computer rotor 12 because of underloading unstability produces the purpose of noise and vibration.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a two-stage screw air compressor's interstage pressure control structure, its along the air flow direction be provided with first order host computer, second level host computer and oil branch bucket, wherein first order host computer rotor and second level host computer rotor pass through connection structure and link to each other its characterized in that: the second-stage host compression cavity and the second-stage host suction cavity are communicated through a bypass flow channel, a valve plate is pressed on a backflow connecting port of the second-stage host compression cavity through the bypass flow channel, and the valve plate is installed on the movable structure.
2. The interstage pressure regulating structure of a two-stage screw air compressor according to claim 1, wherein: the movable structure comprises a valve rod, the valve plate is installed at one end of the valve rod, the valve rod penetrates through the flange, the other end of the valve rod is installed on the piston, the piston is installed on the hydraulic cylinder, the hydraulic cylinder is driven through oil pressure or air pressure, the flange is installed on the second-stage host through a positioning pin, and the hydraulic cylinder is installed on the flange through the positioning pin.
3. The interstage pressure regulating structure of a two-stage screw air compressor according to claim 2, wherein: the rear end of the hydraulic cylinder is provided with a loading connector, the front end of the hydraulic cylinder is provided with an unloading connector, and the loading connector and the unloading connector are respectively communicated with the oil sub-barrel and the first-stage main engine air suction cavity through two-position four-way solenoid valves.
4. The interstage pressure regulating structure of a two-stage screw air compressor according to claim 1, wherein: the backflow connecting port is provided with a guide post, the valve plate is provided with a guide hole, and the guide hole penetrates through the guide post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921759000.4U CN210769318U (en) | 2019-10-21 | 2019-10-21 | Interstage pressure adjusting structure of two-stage screw air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921759000.4U CN210769318U (en) | 2019-10-21 | 2019-10-21 | Interstage pressure adjusting structure of two-stage screw air compressor |
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| Publication Number | Publication Date |
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| CN210769318U true CN210769318U (en) | 2020-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921759000.4U Active CN210769318U (en) | 2019-10-21 | 2019-10-21 | Interstage pressure adjusting structure of two-stage screw air compressor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023040643A1 (en) * | 2021-09-18 | 2023-03-23 | 江森自控空调冷冻设备(无锡)有限公司 | Compressor |
-
2019
- 2019-10-21 CN CN201921759000.4U patent/CN210769318U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023040643A1 (en) * | 2021-09-18 | 2023-03-23 | 江森自控空调冷冻设备(无锡)有限公司 | Compressor |
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