CN201696297U - Oil cut-off and air exhaust combination valve - Google Patents
Oil cut-off and air exhaust combination valve Download PDFInfo
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- CN201696297U CN201696297U CN2010202474368U CN201020247436U CN201696297U CN 201696297 U CN201696297 U CN 201696297U CN 2010202474368 U CN2010202474368 U CN 2010202474368U CN 201020247436 U CN201020247436 U CN 201020247436U CN 201696297 U CN201696297 U CN 201696297U
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Abstract
The utility model relates to an oil cut-off and air exhaust combination valve which comprises an oil cut-off valve and an air exhaust valve integrated with each other. The oil cut-off valve comprises a piston, a running sleeve, a spring, an oil cylinder, an oil inlet of the oil cut-off valve, an oil outlet of the oil cut-off valve, and a control port of the oil cut-off valve; the control port of the oil cut-off valve is communicated with the bottom part of the oil cylinder; the piston, the running sleeve and the spring are sequentially arranged between the oil cylinder and the oil inlet of the oil cut-off valve; a sleeve oil outlet and a sleeve oil inlet are arranged on the running sleeve; when the running sleeve and the spring are jacked by the piston, the sleeve oil inlet is communicated with the oil inlet of the oil cut-off valve, and the sleeve oil outlet is communicated with the oil outlet of the oil cut-off valve. The air exhaust valve comprises a valve body, a non-return baffle, a spring, an air exhaust port of the air exhaust valve, and an air inlet of the air exhaust valve. The non-return baffle is elastically connected with the air inlet of the air exhaust valve by the spring arranged in the valve body in a jacking manner. With simple structure, convenient installation and low manufacturing cost, the oil cut-off and air exhaust combination valve leads the starting of an oil injection screw rod compressor in the environment under certain low temperature to be possible.
Description
Technical field
The utility model relates to the screw compressor manufacturing; being particularly related to the vent systems and the oil-way system control of a kind of high-power (more than the 110KW), mainly is to prevent that screw compressor from the counter-rotating of moment occurring, tell oil and reducing oil-break and the exhaust combination brake switch and proporting that starts main current of electric when shutting down.
Background technique
The compressor industry is not provided with oil cut-off valve, venting check valve usually at present, and therefore screw compressor causes following fault easily in actual application:
Oily phenomenon particularly appears telling during emergency shutdown in 1, exhaust end base of oil injection threaded bolt formula compressor shutdown easily.The lubricant oil major function of exhaust end base of oil injection threaded bolt formula compressor is sealing, the noise reduction sound between cooling, bearing lubrication, negative and positive rotor.Because fuel injection helical lobe compressor all can not be equipped with independently lubricating pump usually, the power that lubricant oil flows mainly is the pressure reduction of dependence equipment different parts, and lubricant oil is flowed to the position of low-pressure by the position of high pressure.The highest position of pressure is the host header relief opening behind the exhaust end base of oil injection threaded bolt formula compressor start; arrive the oil gas tube again; particularly work as the moment that main frame soon stops after the compressor shutdown; because suction valve cuts out; the no longer air-breathing and compression of compressor, the pressure of main frame compression chamber is almost nil, like this; the easy anti-flow process of lubricant oil is got back to the main frame compression chamber from relief opening, also spues from intakeport easily.The oil of saying in the common industry that Here it is of vomitting.
When 2, fuel injection helical lobe compressor started, when particularly ambient temperature was relatively lower, it was excessive to occur main electric motor starting electric current easily, caused to start the protective gear tripping operation.Existence owing to the 1st kind of reason; have a large amount of lubricant oil during compressor shutdown and be back to the main frame compression chamber; when screw compressor starts once more; rotor must overcome the resistance of lubricant oil, and lubricant oil is delivered to compressor oil inflator the inside once more, at this moment owing to will overcome the resistance of lubricant oil; the inrush current of main motor is very big; especially when ambient temperature is below 10 ℃, can cause the sky of the main motor of protection to hold the phenomenon that tripping operation or main contactor burn out usually, make to start failure.
Yet design a kind of oil-break and the exhaust combination brake switch and proporting just can address the above problem, and be that the valve of two kinds of difference in functionalitys is combined, can reduce installing space and manufacture cost.
The model utility content
Task of the present utility model provides a kind of oil-break and exhaust combination brake switch and proporting, it has overcome the shortcoming of above-mentioned prior art, solved that fuel injection helical lobe compressor shuts down tell oily phenomenon and fuel injection helical lobe compressor starts the problem of failing under low temperature environment, fuel injection helical lobe compressor is started under certain low temperature environment becomes possibility; A kind of like this combined valve that possesses two kinds of functions must use simultaneously, and have economical rationality, simple in structure, connect characteristics such as convenient, reliable and stable.
Technical solution of the present utility model is as follows:
A kind of oil-break and exhaust combination brake switch and proporting comprise incorporate oil cut-off valve and outlet valve;
Described oil cut-off valve comprises piston, running sleeve, spring, oil cylinder, oil cut-off valve filler opening, oil cut-off valve oil outlet and oil cut-off valve control mouth; Described oil cut-off valve filler opening, oil cut-off valve oil outlet and oil cut-off valve control mouth are separately positioned on the cylinder wall, described oil cut-off valve control mouthful connection oil cylinder bottom, described oil cylinder is interior to being provided with piston, running sleeve and spring between the oil cut-off valve filler opening successively, described running sleeve is provided with sleeve oil outlet and sleeve filler opening, the sleeve filler opening was communicated with the oil cut-off valve filler opening when described piston head was started shipment rotaring sleeve and spring, and the sleeve oil outlet is communicated with the oil cut-off valve oil outlet;
Described outlet valve comprises valve body, non-return baffle plate, spring, outlet valve relief opening and outlet valve suction port; Described outlet valve relief opening and outlet valve suction port are separately positioned on the valve wall, and described non-return baffle plate is by being arranged on the spring apical grafting outlet valve suction port in the valve body.
Ring is established two-layer through hole on the barrel of described running sleeve, and one deck is several sleeve oil outlets, and another layer is several sleeve filler openings.
Described sleeve oil outlet is arranged on the position of close oil cut-off valve filler opening on the running sleeve, and described sleeve filler opening is arranged on the position of close oil cut-off valve oil outlet on the running sleeve.
The opening resistance of described oil cut-off valve is less than 0.1 crust.
The cracking pressure of described outlet valve is less than 0.5 crust.
The utility model makes it compared with prior art owing to adopted above technological scheme, and the utility model has solved following two difficult problems of fuel injection helical lobe compressor: first is the oily phenomenon of telling of fuel injection helical lobe compressor shutdown; Second is that the fuel injection helical lobe compressor inrush current causes starting failure greatly, particularly starts the super-large current that produces and cause sky to open the startup failure of tripping operation under low temperature environment.Adopt oil-break of the present utility model and exhaust combination brake switch and proporting, fuel injection helical lobe compressor is started under certain low temperature environment becomes possibility.
Oil-break of the present utility model and exhaust combination brake switch and proporting are that oil cut-off valve and outlet valve are combined into one, and it is simple in structure, and is easy for installation, low cost of manufacture.
Description of drawings
Fig. 1 is the plan view of oil-break of the present utility model and exhaust combination brake switch and proporting.
Fig. 2 is the left view of oil-break of the present utility model and exhaust combination brake switch and proporting.
Fig. 3 is the right elevation of oil-break of the present utility model and exhaust combination brake switch and proporting.
Fig. 4 is the plan view of oil-break of the present utility model and exhaust combination brake switch and proporting.
Fig. 5 is the worm's eye view of oil-break of the present utility model and exhaust combination brake switch and proporting.
Fig. 6 is along the sectional drawing of A-A face among Fig. 4.
Fig. 7 is along the sectional drawing of B-B face among Fig. 5.
Fig. 8 is the stereogram of oil-break of the present utility model and exhaust combination brake switch and proporting.
Reference character:
C is a piston, and D is the running sleeve, and E is a spring, and F is an oil cylinder, and G is the sleeve oil outlet that turns round, and H is running sleeve filler opening, and K is the non-return baffle plate, and L is a spring, and M is a relief opening, and N is a suction port, and T is the control mouth, and P is a filler opening, and S is an oil outlet.
Embodiment
Below in conjunction with drawings and Examples the utility model is elaborated.
Referring to Fig. 1 to Fig. 8, oil cut-off valve and outlet valve that a kind of oil-break of the present utility model and exhaust combination brake switch and proporting are integrated.
Oil cut-off valve comprises piston C, running sleeve D, spring E, oil cylinder F, oil cut-off valve oil inlet P, oil cut-off valve oil outlet S and oil cut-off valve control mouthful T.Oil cut-off valve oil inlet P, oil cut-off valve oil outlet S and an oil cut-off valve control mouthful T are separately positioned on the cylinder wall, oil cut-off valve control mouthful T is communicated with oil cylinder F bottom, oil cylinder F is interior to setting gradually piston C, running sleeve D and spring E between the oil cut-off valve oil inlet P, running sleeve D is provided with sleeve oil outlet G and sleeve filler opening H, when piston C jack-up running sleeve D and spring E, sleeve filler opening H is communicated with the oil cut-off valve oil inlet P, and sleeve oil outlet G is communicated with oil cut-off valve oil outlet S.
Outlet valve comprises valve body, non-return baffle plate K, spring L, outlet valve relief opening M and outlet valve suction port N.Outlet valve relief opening M and outlet valve suction port N are separately positioned on the valve wall, and non-return baffle plate K is by being arranged on spring L elastic top in the valve body air valve suction port N that runs in.
Ring is established two-layer through hole on the barrel of running sleeve D, and one deck is several sleeve oil outlets G, and another layer is several sleeve filler openings H.Sleeve oil outlet G is arranged on the position that the sleeve D that turns round goes up close oil cut-off valve oil inlet P, and sleeve filler opening H is arranged on the position that running sleeve D goes up close oil cut-off valve oil outlet S.The opening resistance of oil cut-off valve is less than 0.1 crust.The cracking pressure of outlet valve is less than 0.5 crust.
Working principle of the present utility model is as follows:
In conjunction with referring to Fig. 1 to Fig. 8, oil-break and exhaust combination brake switch and proporting are by the valve combination of oil cut-off valve, two kinds of difference in functionalitys of outlet valve together, solve its many interfaces orientation cross-cutting issue through design.Wherein N, M interface are the import and export of outlet valve, and P, S, T interface are advancing oil drain out and controlling mouth of oil cut-off valve, and the valve of two kinds of difference in functionalitys must use simultaneously and could solve aforementioned the problems of the prior art 1 and problem 2.
Referring to Fig. 7 and Fig. 8, for outlet valve, wherein N is a suction port, and M is a relief opening, and K is the non-return baffle plate, and L is a returning spring.After screw compressor starts, wherein screw rotor produces to move the extruding air and promote lubricant oil and produces pressure, overcomes spring L resistance thereby air pressure enters promotion baffle plate K from suction port N, and baffle plate K is moved, drain tap is opened, and pressurized air, lubricant oil are discharged from relief opening M.After screw compressor is shut down; air pressure from suction port N to relief opening M is from diminishing greatly up to being zero; yet the backhaul pressure from relief opening M to suction port N is constant; with shut down before the same; non-return baffle plate K adds under the effect of spring L backhaul power at backhaul pressure like this; the gravity that overcomes baffle plate K moves up fast, and valve is closed rapidly, has stoped the lubricant oil from relief opening M toward suction port N to reflux.This is the non-return effect of outlet valve.
Referring to Fig. 6 and Fig. 8, for oil cut-off valve, wherein P is a filler opening, and S is an oil outlet, and T is the control mouth, and F is that oil cylinder (a mouthful T communicates with control), C are that piston, D are that spring, G are that running sleeve oil outlet, H are running sleeve filler opening for running sleeve, E.After screw compressor starts, produce pressure in the compression chamber, a mouthful T is transmitted to oil cylinder F from control, and piston C is under the pressure effect of oil cylinder F, overcome the pressure of the resistance of spring E and oil inlet P lubricant oil and move forward, also move forward thereby promote running sleeve D; When running sleeve D moved forward to stop position, the filler opening H on the running sleeve communicated with oil inlet P, and lubricant oil enters in the running sleeve D, and the sleeve oil outlet G that turns round simultaneously also communicates with oil outlet S, and lubricant oil flows out from oil outlet S.After compressor shutdown; the pressure of compression chamber reduces; promptly the pressure of control mouthful T is reduced to zero rapidly; but lubricating oil pressure moment of coming in from oil inlet P does not change; make running sleeve D under the elastic force double action of oil inlet P lubricating oil pressure and spring E, move backward rapidly; thereby running sleeve filler opening H and oil inlet P are cut off rapidly, and lubricant oil also is cut off, and realizes shutting down the oil-break function.
In sum, adopt oil-break of the present utility model and exhaust combination brake switch and proporting, fuel injection helical lobe compressor is started under certain low temperature environment becomes possibility.The utility model is that oil cut-off valve and outlet valve are combined into one, and it is simple in structure, and is easy for installation, low cost of manufacture.
Certainly, those skilled in the art in the present technique field will be appreciated that, the foregoing description only is to be used for illustrating the utility model, and be not with opposing qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in the scope of the utility model claim the variation of the foregoing description, modification etc.
Claims (5)
1. oil-break and exhaust combination brake switch and proporting is characterized in that: comprise incorporate oil cut-off valve and outlet valve;
Described oil cut-off valve comprises piston, running sleeve, spring, oil cylinder, oil cut-off valve filler opening, oil cut-off valve oil outlet and oil cut-off valve control mouth; Described oil cut-off valve filler opening, oil cut-off valve oil outlet and oil cut-off valve control mouth are separately positioned on the cylinder wall, described oil cut-off valve control mouthful connection oil cylinder bottom, described oil cylinder is interior to being provided with piston, running sleeve and spring between the oil cut-off valve filler opening successively, described running sleeve is provided with sleeve oil outlet and sleeve filler opening, the sleeve filler opening was communicated with the oil cut-off valve filler opening when described piston head was started shipment rotaring sleeve and spring, and the sleeve oil outlet is communicated with the oil cut-off valve oil outlet;
Described outlet valve comprises valve body, non-return baffle plate, spring, outlet valve relief opening and outlet valve suction port; Described outlet valve relief opening and outlet valve suction port are separately positioned on the valve wall, and described non-return baffle plate is by being arranged on the spring apical grafting outlet valve suction port in the valve body.
2. oil-break as claimed in claim 1 and exhaust combination brake switch and proporting is characterized in that: ring is established two-layer through hole on the barrel of described running sleeve, and one deck is several sleeve oil outlets, and another layer is several sleeve filler openings.
3. oil-break as claimed in claim 2 and exhaust combination brake switch and proporting is characterized in that: described sleeve oil outlet is arranged on the position of close oil cut-off valve filler opening on the running sleeve, and described sleeve filler opening is arranged on the position of close oil cut-off valve oil outlet on the running sleeve.
4. as any described oil-break and exhaust combination brake switch and proporting in the claim 1 to 3, it is characterized in that: the opening resistance of described oil cut-off valve is less than 0.1 crust.
5. as any described oil-break and exhaust combination brake switch and proporting in the claim 1 to 3, it is characterized in that: the cracking pressure of described outlet valve is less than 0.5 crust.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202474368U CN201696297U (en) | 2010-07-01 | 2010-07-01 | Oil cut-off and air exhaust combination valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202474368U CN201696297U (en) | 2010-07-01 | 2010-07-01 | Oil cut-off and air exhaust combination valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201696297U true CN201696297U (en) | 2011-01-05 |
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ID=43397539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202474368U Expired - Fee Related CN201696297U (en) | 2010-07-01 | 2010-07-01 | Oil cut-off and air exhaust combination valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201696297U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114738274A (en) * | 2022-03-21 | 2022-07-12 | 陕西飞机工业有限责任公司 | G250 screw air compressor oil gas system |
-
2010
- 2010-07-01 CN CN2010202474368U patent/CN201696297U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114738274A (en) * | 2022-03-21 | 2022-07-12 | 陕西飞机工业有限责任公司 | G250 screw air compressor oil gas system |
| CN114738274B (en) * | 2022-03-21 | 2023-05-23 | 陕西飞机工业有限责任公司 | Oil-gas system of G250 screw air compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110105 Termination date: 20130701 |