CN201751640U - Pneumatic mechanical type oil cut-off valve - Google Patents
Pneumatic mechanical type oil cut-off valve Download PDFInfo
- Publication number
- CN201751640U CN201751640U CN2010202686465U CN201020268646U CN201751640U CN 201751640 U CN201751640 U CN 201751640U CN 2010202686465 U CN2010202686465 U CN 2010202686465U CN 201020268646 U CN201020268646 U CN 201020268646U CN 201751640 U CN201751640 U CN 201751640U
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- valve
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- piston rod
- piston
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Abstract
A pneumatic mechanical type oil cut-off valve comprises a valve body (2), a piston rod (3) and a piston (4). The piston rod (3) and the piston (4) are installed in the valve cavity (7) of the valve body (2). One end of the valve cavity (7) is an oil feeding cavity, and the other end of the valve cavity (7) is connected with the air outlet of a compressor. The piston (4) is disposed at one end of the valve cavity (7) close to the pressure source of the compressor; the valve body (2) is provided with an oil-discharging cavity (8) communicated with the oil feeding end of the valve cavity (7). One end of the piston rod (3) is connected with the piston (4) and the other end of the piston rod (3) is arranged with a restoring spring (6) and an annular boss with a sealed slope separating the oil-feeding cavity of the valve cavity (7) from the oil-discharging cavity(8)of the valve cavity (7). Simple in structure, the pneumatic mechanical type oil cut-off valve of the utility model is also safe and reliable.
Description
Technical field
The utility model relates to a kind of compressor part, especially a kind ofly guarantees that big displacement screw compressor lubricant oil fuel feeding can not influence the oil cut-off valve of startup, specifically a kind of pneumatic machinery formula oil cut-off valve.
Background technique
In big discharge capacity fuel injection helical lobe compressor oil circuit, need to be provided with oil cut-off valve; at this moment because big displacement screw compressor head structure is big; the power height; the starting torque of driving machine is big; oil during compressor shutdown in the oil circuit can pour in the head compression chamber; when start next time; can cause the driving machine detent torque excessive and can't start; therefore oil cut-off valve must be set; the oil cut-off valve that adopts is to adopt electromagnetic valve mostly at present; it is planted control mode and has poor reliability; life-span is short; misoperation takes place easily; if especially solenoid valve is malfunctioning in the compressor normal course of operation, can cause oil-break maybe can't cut off the problem of oil circuit, this still there is not good solution at present.
Summary of the invention
The purpose of this utility model is easily to cause the problem of misoperation and life-span weak point at the oil cut-off valve of existing electromagnetic valve type structure, designs a kind of pneumatic machinery formula oil cut-off valve that utilizes compressor self compressed gas source pressure to realize the control of oil circuit break-make.
The technical solution of the utility model is:
A kind of pneumatic machinery formula oil cut-off valve, it comprises valve body 2, piston rod 3 and piston 4, piston rod 3 and piston 4 are installed in the valve pocket 7 of valve body 2, one end of valve pocket 7 is an oil suction chamber, the other end of valve pocket 7 links to each other with the pressure gas source of compressor, piston 4 is installed in valve pocket 7 near in the end of compressor pressure source of the gas, valve body 2 be provided be connected with the oil inlet end of valve pocket 7 go out oil pocket 8, one end of piston rod 3 links to each other with piston 4, it is characterized in that on the other end of described piston rod 3 Returnning spring 6 being installed and be provided with one with the oil suction chamber of valve pocket 7 with go out the annular boss 9 that seals the inclined-plane that has that oil pocket 8 cuts off.
One end of described Returnning spring 6 offsets with the block 1 that is installed in the valve pocket 7, and the shaft shoulder on the other end and the piston rod 3 offsets.
Be connected with valve cover 5 on one end of described valve body 2 installation pistons 4, valve cover 5 is provided with the connecting through hole 10 that is communicated with valve pocket 7 and exhaust outlet of compressor.
Described piston rod 3 is provided with the axial oil groove that is communicated with oil inlet end and goes out oil pocket 8 with the surface that goes out oil pocket 8 relative position places.
Described piston rod 3 is a hollow-core construction, is being provided with two ring through hole 11 at least with going out oil pocket 8 relative position places, and every circle is provided with four through holes 11 at least, and described through hole 11 connects piston rod 3 inner chambers respectively and goes out oil pocket 8.
The beneficial effects of the utility model:
The pressure that produces when the utility model utilizes compressor operating oil-break and the not phenomenon of oil-break without reason can not occur as the power of control oil channel break-make.Have safe and reliable, advantage of simple structure.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
A kind of pneumatic machinery formula oil cut-off valve, it comprises valve body 2, piston rod 3 and piston 4, piston rod 3 and piston 4 are installed in the valve pocket 7 of valve body 2, one end of valve pocket 7 is an oil suction chamber, the other end of valve pocket 7 and exhaust outlet of compressor are connected, for the ease of installation and maintenance, can on an end of valve body 2 installation pistons 4, install valve cover 5 additional, on valve cover 5, process connection valve pocket 7 and exhaust outlet of compressor connecting through hole 10 again.As Fig. 1, piston 4 is installed in valve pocket 7 near in the end of compressor pressure source of the gas, valve body 2 be provided be connected with the oil inlet end of valve pocket 7 go out oil pocket 8, one end of piston rod 3 links to each other with piston 4, and the other end of described piston rod 3 is provided with and Returnning spring 6 is installed and is provided with an oil suction chamber and the annular boss 9 that seals the inclined-plane that has that goes out oil pocket 8 partitions with valve pocket 7.One end of Returnning spring 6 wherein both can be directly and the inwall of valve pocket 7, the back-up ring that is installed on the inwall offset, also can offset with the block 1 that is installed in the valve pocket 7, the shaft shoulder on the other end and the piston rod 3 offsets.Can flow out oil pocket smoothly for the ease of the oil in the oil suction chamber, simultaneously guarantee that again piston rod 3 can normally move in valve pocket 7, both can on piston rod 3 and the surface that goes out oil pocket 8 relative position places, be provided with the axial oil groove that is communicated with oil suction chamber and goes out oil pocket 8, also piston rod 3 can be manufactured hollow-core construction, with go out oil pocket 8 relative position places and be provided with two ring through hole 11 at least, every circle is provided with four at least, and described through hole 11 connects piston rod 3 inner chambers respectively and goes out oil pocket 8.
Working procedure of the present utility model is: behind compressor start, air pressure is set up immediately and the through hole 10 from the valve cover 5 enters the cavity on piston 4 right sides, this pressure overcomes the elastic force of Returnning spring 6 immediately and promotes piston 4 and piston rod 3 is moved to the left, the annular boss 9 that seals the inclined-plane that has on the piston rod 3 leaves sealing surface relative in the valve pocket 7 at this moment, the oil of coming in from oil suction chamber then from piston rod 3 the most nearby through hole 11 enter the piston rod 3, enter out in the oil pocket 8 by the through hole on the piston rod 3 11 immediately again, introduce in the oil feed line by pipeline, realize fuel feeding.This shows as long as compressor is kept in motion, pressure output is arranged promptly, oil cut-off valve just is in on-state, guarantees the oil require of using of proper functioning; When compressor is out of service, exhaust outlet of compressor does not have pressure, the elastic force of Returnning spring 6 promptly promotes piston 4 and piston rod 3 moves right, the annular boss 9 that seal the inclined-plane having on the piston rod 9 is close on the sealing surface in the valve pocket 7, pressure oil in the oil suction chamber is cut off in the through hole that can't enter on the piston rod, realizes cutting off the function of oil circuit.
Also can realize oil suction chamber on the piston rod 3 of the present utility model and go out being communicated with of oil pocket by the method that increases the axial oil groove (not shown).
The utility model does not relate to the part prior art that maybe can adopt all same as the prior art to be realized.
Claims (5)
1. pneumatic machinery formula oil cut-off valve, it comprises valve body (2), piston rod (3) and piston (4), piston rod (3) and piston (4) are installed in the valve pocket (7) of valve body (2), one end of valve pocket (7) is an oil suction chamber, the other end of valve pocket (7) links to each other with the pressure gas source of compressor, piston (4) is installed in valve pocket (7) near in the end of compressor pressure source of the gas, valve body (2) be provided be connected with the oil inlet end of valve pocket (7) go out oil pocket (8), one end of piston rod (3) links to each other with piston (4), it is characterized in that on the other end of described piston rod (3) Returnning spring (6) being installed and be provided with one with the oil suction chamber of valve pocket (7) with go out the annular boss (9) that seals the inclined-plane that has that oil pocket (8) cuts off.
2. pneumatic machinery formula oil cut-off valve according to claim 1 is characterized in that an end of described Returnning spring (6) and the block (1) that is installed in the valve pocket (7) offset, and the shaft shoulder on the other end and the piston rod (3) offsets.
3. pneumatic machinery formula oil cut-off valve according to claim 1, it is characterized in that described valve body (2) is installed on the end of piston (4) is connected with valve cover (5), and valve cover (5) is provided with the connecting through hole (10) that is communicated with valve pocket (7) and exhaust outlet of compressor.
4. pneumatic machinery formula oil cut-off valve according to claim 1 is characterized in that described piston rod (3) is provided with the axial oil groove that is communicated with oil inlet end and goes out oil pocket (8) with the surface that goes out oil pocket (8) relative position place.
5. pneumatic machinery formula oil cut-off valve according to claim 1, it is characterized in that described piston rod (3) is hollow-core construction, with go out oil pocket (8) relative position place and be provided with two ring through hole (11) at least, every circle is provided with four through holes (11) at least, and described through hole (11) connects piston rod (3) inner chamber respectively and goes out oil pocket (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202686465U CN201751640U (en) | 2010-07-23 | 2010-07-23 | Pneumatic mechanical type oil cut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202686465U CN201751640U (en) | 2010-07-23 | 2010-07-23 | Pneumatic mechanical type oil cut-off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201751640U true CN201751640U (en) | 2011-02-23 |
Family
ID=43602047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202686465U Expired - Fee Related CN201751640U (en) | 2010-07-23 | 2010-07-23 | Pneumatic mechanical type oil cut-off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201751640U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016789A (en) * | 2012-12-14 | 2013-04-03 | 上海优耐特斯压缩机有限公司 | Waste heat recovery switching valve control system and control method of compressor |
| CN110578692A (en) * | 2019-09-20 | 2019-12-17 | 福州市虚谷技术有限公司 | Compressor oil circuit shutoff valve device |
-
2010
- 2010-07-23 CN CN2010202686465U patent/CN201751640U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016789A (en) * | 2012-12-14 | 2013-04-03 | 上海优耐特斯压缩机有限公司 | Waste heat recovery switching valve control system and control method of compressor |
| CN110578692A (en) * | 2019-09-20 | 2019-12-17 | 福州市虚谷技术有限公司 | Compressor oil circuit shutoff valve device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20110223 Termination date: 20160723 |