CN100432440C - Linked regulatable load reducing valve - Google Patents
Linked regulatable load reducing valve Download PDFInfo
- Publication number
- CN100432440C CN100432440C CNB200510095562XA CN200510095562A CN100432440C CN 100432440 C CN100432440 C CN 100432440C CN B200510095562X A CNB200510095562X A CN B200510095562XA CN 200510095562 A CN200510095562 A CN 200510095562A CN 100432440 C CN100432440 C CN 100432440C
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- valve
- gear
- compressor
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Abstract
The present invention relates to a linkage adjustable load reducing valve, more specifically a load adjustment used for a screw compressor, which belongs to the technical field of an automatic control adjusting device. The present invention mainly adopts the transmission of a rack rod and a gear to realize linkage of an air inlet valve plate and an air emptying valve of the compressor to realize the load adjustment. One end of a gear rod is connected with an oil piston, and the other end is connected with the emptying valve. The gear rod can anxially move leftwards and rightwards by using pressure oil to realize the opening and closing the emptying valve. Simultaneously, the rack rod is used to drive the gear to rotate, and the gear, a valve rod and the air inlet valve plate are connected into a whole to realize the precise and reliable linkage of the closing and opening of the air inlet valve and the opening and closing of the emptying valve. The present invention has the advantages of simplified system pipelines, compact structure, basically no breakable parts and better reliability of the system. The present invention can adjust the inspiratory capacity (the vacuum degree of the inspiratory air) of the compressor when uninstalled through an adjusting screw bolt so that a machine group operates at an optimal point, namely low power consumption and appropriate exhaust air degree, when uninstalled, and can improve the efficiency of the compressor and the reliability of automatic control.
Description
Technical field
The present invention relates to a kind of regulatable load reducing valve, specifically be used for the air inlet adjustment of air compressor, belong to automatic control and adjustment device technique field.
Background technique
Easing valve is the main device that tolerance is regulated in the compressor.The power consumption when quality of easing valve structure directly has influence on compressor unloading and the delivery temperature of compressor etc.Easing valve rational in infrastructure can improve compressor efficiency and improve the reliability of control automatically.Before the present invention made, in prior art, the control valve (easing valve) that is used for the adjusting of compressor tolerance mainly adopts following two kinds: a kind of control valve (easing valve) was the reciprocal linkage structure of diaphragm.The control valve of this kind structure (easing valve), the flow losses of gas in easing valve are bigger, and noise is big; It is equipped with parts such as spring, diaphragm, and structure is complicated, and diaphragm is fragile.Another kind of control valve is a butterfly valve structure.This butterfly valve structure need be provided with evacuating device in addition, therefore, and system complex, poor reliability; Air-breathing degree of vacuum (off-loading amount) is difficult for regulating, and stability is poor.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency; simplified system pipeline, intake resistance is little, air-breathing degree of vacuum can regulate during unloading; be operated in optimum in the time of guaranteeing the unit unloading, can improve the regulatable load reducing valve of compressor efficiency and the automatic control reliability of raising.
Main solution of the present invention is achieved in that
The present invention mainly adopts oily piston to be installed in the oil cylinder of housing, rack bar one end connects with oily piston, the other end and emptying valve body link, gear is installed on the valve rod, rack bar driven gear and valve rod rotation, and the valve rod two ends utilize lining to be assembled on the housing intake duct, valve rod and intake leaf are connected as one, feature is that described housing is provided with the C hole that can pass through to regulate bolt adjusting aperture, during the adjustable compressor unloading, and the air-breathing degree of vacuum when promptly air-breathing valve plate is closed.
Described adjusting bolt is located with locking with the nut away from case side by the nut near case side.Described housing oil cylinder is provided with hydraulic oil a hole and b hole.
Compared with the prior art the present invention has the following advantages:
The present invention is simple, compact and reasonable for structure; Owing to adopt the combined type linkage structure, simplified system pipeline; And do not have easily damaged parts substantially, improved the reliability of control greatly; Air-breathing degree of vacuum can regulate during unloading can be guaranteed suitable delivery temperature and low unloading operation power consumption, be operated in optimum in the time of guaranteeing the unit unloading, and intake resistance is little, and can improves compressor efficiency.
Description of drawings
Fig. 1 is a structure plan view of the present invention.
Fig. 2 is a structure A-A sectional view of the present invention.
Fig. 3 is a structure sectional view of the present invention.
Fig. 4 is a structure B-B broken section enlarged view of the present invention.
Embodiment
Embodiment during following the present invention incites somebody to action in conjunction with the accompanying drawings is further described:
The present invention mainly by housing 1, intake leaf 2, oily piston 3, rack bar 4, lining ring 5, emptying valve body 6, lining 7, valve rod 8, gear 9, near the nut 10 of case side, regulate bolt 11, form away from the nut 12 of case side etc.
In the easing valve of the present invention, adopt oily piston 3 to be installed in the oil cylinder of housing 1, rack bar 4 one ends connect with oily piston 3, and the other end and atmospheric valve 6 link.Gear 9 is installed on the valve rod 8, but rack bar 4 driven gears 9 and valve rod 8 rotations, valve rod 8 two ends are provided with lining 7, and they are contained on easing valve housing 1 intake duct.Valve rod 8 is that a motion is whole by Bolt Connection again with intake leaf 2.The to-and-fro motion and the rotatablely moving of intake leaf 2 of rack bar 4 (oily piston 3, emptying valve body 6) are an interlock.Atmospheric valve cuts out in the time of should guaranteeing intake leaf 2 at fully open position when assembling, and intake leaf 2 atmospheric valve when the complete shut-down position is opened maximum.Wherein lining ring 5 and lining 7 play the effect of bearing.On housing 1, be provided with one and can regulate the C hole of aperture by regulating bolt 11, during the adjustable compressor unloading, the air-breathing degree of vacuum when promptly air-breathing valve plate is closed.Described adjusting bolt 11 is located with locking with the nut 12 away from case side by the nut 10 near case side.
Working principle of the present invention and working procedure:
This easing valve is actually a combination brake switch and proporting---the suction valve and the exhaust atmospheric valve of interlock.When starting and unload, hydraulic oil enters oil cylinder from " b " hole that is arranged on housing 1 oil cylinder, promote oily piston and rack bar 4 left lateral, driven gear 9, valve rod 8 rotates, progressively make intake leaf 2 close (leaving the annular space between intake leaf 2 and the housing 1), progressively open atmospheric valve 6 simultaneously, realize the unloading operation.During loading, hydraulic oil enters oil cylinder from " a " hole that is arranged on housing 1 oil cylinder, and rack bar 4 right laterals are progressively opened intake leaf 2, progressively closes atmospheric valve 6 simultaneously, realizes full load operation.This interlock is controlled, and has improved the reliability of control system effectively.Realize the open and close of valve plate, degree of accuracy height by gear ﹠ rack structure.Oil free screw compressor is when the unloading operation, and the air-breathing degree of vacuum (air inflow) of controlling it is very important, and appropriate vacuum degree can be guaranteed suitable delivery temperature and low unloading operation power consumption.When the unloading operation, most of gas is entered by the annular space between valve plate 2 and the housing, and small part gas is entered by " c " hole that is arranged on the housing 1.The air inflow available adjustment bolt 11 that enters " c " hole is regulated.This design can be eliminated the valve plate 2 that causes because of machining error and the matching gap deviation between the housing 1.Reduced processing request; And can accurately access actual required degree of vacuum.
Claims (3)
1, a kind of regulatable load reducing valve, adopt oily piston (3) to be installed in the oil cylinder of housing (1), rack bar (4) one ends connect with oily piston (3), the other end and emptying valve body (6) link, gear (9) is installed on the valve rod (8), valve rod (8) two ends utilize lining (7) to be assembled on housing (1) intake duct, valve rod (8) is connected as one with intake leaf (2), it is characterized in that described housing (1) is provided with one and can regulates the C hole of aperture by regulating bolt (11), during the adjustable compressor unloading, the air-breathing degree of vacuum when promptly air-breathing valve plate is closed.
2, regulatable load reducing valve according to claim 1 is characterized in that described housing (1) oil cylinder is provided with hydraulic oil a hole and b hole.
3, regulatable load reducing valve according to claim 1 is characterized in that described adjusting bolt (11) is by locating with locking near the nut (10) of case side and away from the nut (12) of case side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510095562XA CN100432440C (en) | 2005-11-19 | 2005-11-19 | Linked regulatable load reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510095562XA CN100432440C (en) | 2005-11-19 | 2005-11-19 | Linked regulatable load reducing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1793659A CN1793659A (en) | 2006-06-28 |
| CN100432440C true CN100432440C (en) | 2008-11-12 |
Family
ID=36805274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510095562XA Expired - Fee Related CN100432440C (en) | 2005-11-19 | 2005-11-19 | Linked regulatable load reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100432440C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107664112B (en) * | 2016-07-28 | 2019-05-28 | 苏州寿力气体设备有限公司 | Intake valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5979094A (en) * | 1982-10-27 | 1984-05-08 | Hitachi Ltd | Capacity control device for compressor |
| JPH0278775A (en) * | 1988-09-14 | 1990-03-19 | Hokuetsu Kogyo Co Ltd | Volume control device for oil-free screw compressor |
| JPH062667A (en) * | 1992-06-19 | 1994-01-11 | Tokico Ltd | Unload device for air compressor |
| CN2539851Y (en) * | 2001-12-27 | 2003-03-12 | 朱先龙 | One-way unloading valve |
| CN2567368Y (en) * | 2002-08-26 | 2003-08-20 | 瞿政勇 | Cylinder head for miniature air compressor |
| CN2588080Y (en) * | 2002-12-11 | 2003-11-26 | 上海风根压缩机有限公司 | Vacuum releasing valve for sliding-vane compressor |
-
2005
- 2005-11-19 CN CNB200510095562XA patent/CN100432440C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5979094A (en) * | 1982-10-27 | 1984-05-08 | Hitachi Ltd | Capacity control device for compressor |
| JPH0278775A (en) * | 1988-09-14 | 1990-03-19 | Hokuetsu Kogyo Co Ltd | Volume control device for oil-free screw compressor |
| JPH062667A (en) * | 1992-06-19 | 1994-01-11 | Tokico Ltd | Unload device for air compressor |
| CN2539851Y (en) * | 2001-12-27 | 2003-03-12 | 朱先龙 | One-way unloading valve |
| CN2567368Y (en) * | 2002-08-26 | 2003-08-20 | 瞿政勇 | Cylinder head for miniature air compressor |
| CN2588080Y (en) * | 2002-12-11 | 2003-11-26 | 上海风根压缩机有限公司 | Vacuum releasing valve for sliding-vane compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1793659A (en) | 2006-06-28 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20081112 Termination date: 20151119 |