CN201412352Y - Air intake valve of screw air compressor - Google Patents
Air intake valve of screw air compressor Download PDFInfo
- Publication number
- CN201412352Y CN201412352Y CN2009201209786U CN200920120978U CN201412352Y CN 201412352 Y CN201412352 Y CN 201412352Y CN 2009201209786 U CN2009201209786 U CN 2009201209786U CN 200920120978 U CN200920120978 U CN 200920120978U CN 201412352 Y CN201412352 Y CN 201412352Y
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- Prior art keywords
- valve
- valve body
- screw
- air
- air outlet
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000005192 partition Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract 2
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Abstract
The utility model relates to a screw air compressor, in particular to an air intake valve of a screw air compressor, which comprises a valve body, wherein the valve body is provided with an air inletand an air outlet. The air intake valve of a screw air compressor is characterized in that a valve plate used for disconnecting or connecting the air inlet and the air outlet is arranged inside the valve body, the valve plate is equipped with a transmission rod fixedly connected with the same, one end of the transmission rod extends out of the valve body to be connected with a piston rod of a control cylinder through a lever mechanism, the valve plate is equipped with a small hole for communicating the air inlet with the air outlet, and one side inside the valve body approaching the air outletis communicated with an inner cavity of the cylinder body of the control cylinder, and the valve plate and an inner cavity of the valve body are sealed. The air intake valve of a screw air compressoris simple in structure, low in error rate and manufacturing cost and long in service life, and resolves problems that a downward force which is generated by the piston due to the self-weight of the valve plate in the prior art causes the piston to be non-concentric with a piston base when moving, is easy to damage a sealing part and affects work reliability of the total valve and the like.
Description
Technical field
The utility model relates to a kind of screw-rod air compressor, particularly screw-rod air compressor gas valve.
Technical background
Normally closed piston type suction valve on the screw-rod air compressor commonly used, valve body 17 is arranged, orthogonal suction port and air outlet are arranged on the valve body 17, a spring 10 is housed in the suction port inboard applies preset force for piston 11, make valve block 14 sealing suction ports, inlet, outlet is intercepted.Valve block 14 is fixed together with piston 11 usefulness nuts 16, and when the pressure of suction port during greater than the pressure of spring one side, piston 11 drive valve blocks 14 are to that lateral movement that spring is arranged, inlet open, and air compressor enters load condition.See that thus piston 11 axially moves in piston seat 12, but because of the valve block dead weight, make piston produce downward power, this active force cause piston at the volley with the piston seat decentraction, fragile Sealing has influenced the functional reliability of whole valve.
Summary of the invention
It is a kind of simple in structure that the utility model purpose is to provide, rate of fault is low, low cost of manufacture, the screw-rod air compressor gas valve of long service life, solved the valve block dead weight that prior art exists, made piston produce downward power, this active force cause piston at the volley with the piston seat decentraction, fragile Sealing has influenced the problems such as functional reliability of whole valve.
Above-mentioned technical purpose of the present utility model mainly solves by the following technical programs: it comprises valve body, suction port and air outlet are arranged on the valve body, it is characterized in that being equipped with in the described valve body valve block that is used for suction port and air outlet partition or connection, valve block is provided with fixedly connected with it drive link, one end of drive link extends to outside the valve body and connects by a leverage with the piston rod of control cylinder, described valve block is provided with the aperture of a connection suction port and air outlet, and the side near the air outlet in the valve body is communicated with the inner chamber of cylinder block of control cylinder.Valve block and body cavity form sealing.After the compressor start, air begins to enter slowly main frame by the aperture on the valve block, machine pressure is progressively set up, the interior pressure near air outlet one side of valve body this moment passes to control cylinder by pipeline, and the piston rod in the control cylinder is elongation gradually under the effect of gas pressure, promotes leverage, thereby drive the valve block drive link, valve block is opened, and with the suction port and the air outlet connection of valve body, compressor enters load condition.After system pressure reaches rating value, the gas that enters cylinder can be discharged into airspace under the help of atmospheric valve, the piston rod of control cylinder is return, and drives the valve block drive link by bar thick stick mechanism and rotates in the opposite direction, thereby suction valve cuts out, and compressor enters unloading condition.Adopted rotation to drive valve block owing to this is practical around radially rotating the opening and closing that realize suction valve by drive link, eliminated the influence of valve block deadweight, can play the reliable opening and closing effect of suction valve, its working life is longer, and simple in structure.
As preferably, described valve body is provided with the control cylinder attachment hole near the position of air outlet one side, and described control cylinder attachment hole is communicated with the inner chamber of cylinder block of control cylinder by pipeline.
As preferably, described leverage comprises the connecting rod that radially is provided with along the valve block drive link, one end of described connecting rod is fixedlyed connected with valve block drive link circumferencial direction, the other end of connecting rod and a joint are rotationally connected, the axis of joint and valve block drive link parallel axes, the other end of joint is connected with the piston rod end vertical fixing of control cylinder.
As preferably, the afterbody and the mounting handle of described control cylinder are pivotally connected, and an end of mounting handle is fixed on an end of strut, and the other end and the valve body of strut are fixed.Wherein, control cylinder and valve body connected as one to make structure of the present utility model more compact, be convenient to assembling more and install.
As preferably, the parallel axes of described valve block drive link is in the diametric(al) of valve block.
As preferably, the angle of valve block and suction port axis was 75 °-85 ° when described valve block cut off suction port and air outlet, thereby valve block can closely contact with valve interior wall when guaranteeing that suction valve cuts out, and effectively suction valve cuts out.
As preferably, described suction port and air outlet are coaxial, thereby simplify the structure of suction valve.
Therefore, the utlity model has simple in structurely, rate of fault is low, low cost of manufacture, characteristics such as long service life.
Description of drawings
Fig. 1 is a kind of structural representation of existing screw-rod air compressor gas valve;
Fig. 2 is a kind of structural representation of the present utility model;
Fig. 3 is the plan structure schematic representation of Fig. 2.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment 1: as shown in Figures 2 and 3, the two ends of valve body 17 are provided with suction port 20 and the air outlet 22 that is connected by inner chamber, suction port 20 and air outlet 22 are coaxial, the valve block 18 that is used for suction port 20 and air outlet 22 partitions or connection is housed in the valve body 17, the angle β of valve block and suction port axis was 82 ° when valve block cut off suction port and air outlet, valve block 18 is provided with fixedly connected with it drive link 24, the parallel axes of drive link 24 is in the diametric(al) of valve block 18, one end of drive link 24 extends to outside the valve body 17 and connects by a leverage 25 with the piston rod 26 of control cylinder 27, leverage 25 comprises the connecting rod 19 that radially is provided with along the drive link 24 of valve block 28, one end of connecting rod 19 is fixedlyed connected with drive link 24 circumferencial directions of valve block 18, the other end of connecting rod 19 and a joint 21 are rotationally connected, drive link 24 parallel axes of the axis of joint 21 and valve block 18, the other end of joint 21 is connected with the end vertical fixing of the piston rod 26 of control cylinder 27, valve block 18 is provided with the aperture (not expressing among the figure) of a connection suction port 20 and air outlet 22, valve body 17 is provided with control cylinder attachment hole 23 near the position of air outlet one side, control cylinder attachment hole 13 is communicated with by the inner chamber of cylinder block of pipeline with control cylinder 27, the afterbody of control cylinder 27 and mounting handle 28 are pivotally connected, one end of mounting handle 28 is fixed on an end of strut 29, and the other end of strut 29 and valve body 17 are fixing.
After the compressor start, air begins to enter slowly main frame by the aperture on the valve block 18, machine pressure is progressively set up, this moment, pressure passed to control cylinder 27 by pipeline, piston rod 26 in the cylinder is elongation gradually under the effect of gas pressure, promotes leverage 25, thereby drives drive link 24, valve block 21 is opened, and compressor enters load condition.After system pressure reached rating value, the gas that enters cylinder can be discharged into airspace under the help of atmospheric valve, thereby suction valve cuts out, and compressor enters unloading condition.
Claims (7)
1, a kind of screw-rod air compressor gas valve, comprise valve body, suction port and air outlet are arranged on the valve body, it is characterized in that being equipped with in the described valve body valve block that is used for suction port and air outlet partition or connection, valve block is provided with fixedly connected with it drive link, one end of drive link extends to outside the valve body and connects by a leverage with the piston rod of control cylinder, described valve block is provided with the aperture of a connection suction port and air outlet, and the side near the air outlet in the valve body is communicated with the inner chamber of cylinder block of control cylinder.
2, screw-rod air compressor gas valve according to claim 1 is characterized in that described valve body is provided with the control cylinder attachment hole near the position of air outlet one side, and described control cylinder attachment hole is communicated with the inner chamber of cylinder block of control cylinder by pipeline.
3, screw-rod air compressor gas valve according to claim 1 and 2, it is characterized in that described leverage comprises the connecting rod that radially is provided with along the valve block drive link, one end of described connecting rod is fixedlyed connected with valve block drive link circumferencial direction, the other end of connecting rod and a joint are rotationally connected, the axis of joint and valve block drive link parallel axes, the other end of joint is connected with the piston rod end vertical fixing of control cylinder.
4, screw-rod air compressor gas valve according to claim 1 and 2 is characterized in that the afterbody of described control cylinder and mounting handle are pivotally connected, and an end of mounting handle is fixed on an end of strut, and the other end and the valve body of strut are fixed.
5, screw-rod air compressor gas valve according to claim 1 and 2 is characterized in that the diametric(al) of the parallel axes of described valve block drive link in valve block.
6, screw-rod air compressor gas valve according to claim 1 and 2, the angle of valve block and suction port axis is 75 °-85 ° when it is characterized in that described valve block with suction port and air outlet partition.
7, screw-rod air compressor gas valve according to claim 1 and 2 is characterized in that described suction port and air outlet are coaxial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201209786U CN201412352Y (en) | 2009-06-01 | 2009-06-01 | Air intake valve of screw air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201209786U CN201412352Y (en) | 2009-06-01 | 2009-06-01 | Air intake valve of screw air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201412352Y true CN201412352Y (en) | 2010-02-24 |
Family
ID=41714236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201209786U Expired - Fee Related CN201412352Y (en) | 2009-06-01 | 2009-06-01 | Air intake valve of screw air compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201412352Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604951A (en) * | 2016-03-07 | 2016-05-25 | 南通市红星空压机配件制造有限公司 | Electric air inlet valve for screw air compressor |
| CN117167244A (en) * | 2023-10-16 | 2023-12-05 | 华意压缩机(荆州)有限公司 | A kind of compressor |
-
2009
- 2009-06-01 CN CN2009201209786U patent/CN201412352Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604951A (en) * | 2016-03-07 | 2016-05-25 | 南通市红星空压机配件制造有限公司 | Electric air inlet valve for screw air compressor |
| CN117167244A (en) * | 2023-10-16 | 2023-12-05 | 华意压缩机(荆州)有限公司 | A kind of compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI GAIRS MACHINERY CO., LTD. Free format text: FORMER OWNER: ZHU MENGJUN Effective date: 20101125 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 325604 (ZHEJIANG YUEYAN COMPRESSOR CO., LTD.), JINGSANWEI ROAD 6, CENTER INDUSTRIAL PARK, YUEQING CITY, ZHEJIANG PROVINCE TO: 201617 NO.388, TANGMING ROAD, SHIHUDANG INDUSTRIAL ZONE, SONGJIANG DISTRICT, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20101125 Address after: 201617 Shanghai Songjiang District Shihudang Industrial Zone No. 388 humin Road Patentee after: SHANGHAI GAIRS MACHINERY CO., LTD. Address before: 325604, Yueqing City Industrial Center, Zhejiang, three weft six road (Zhejiang Yue Yan Compressor Co., Ltd.) Patentee before: Zhu Mengjun |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100224 Termination date: 20170601 |