CN216242384U - Oil cut-off valve controlled by gas pressure - Google Patents
Oil cut-off valve controlled by gas pressure Download PDFInfo
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- CN216242384U CN216242384U CN202122971100.7U CN202122971100U CN216242384U CN 216242384 U CN216242384 U CN 216242384U CN 202122971100 U CN202122971100 U CN 202122971100U CN 216242384 U CN216242384 U CN 216242384U
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Abstract
The utility model provides an oil cut-off valve controlled by gas pressure, which comprises a valve body, a piston, a valve clack and a valve rod, wherein the piston, the valve clack and the valve rod are arranged in the valve body; a first cavity, a second cavity and a third cavity are sequentially arranged in the valve body, the first cavity is communicated with the air inlet channel, the second cavity is communicated with the oil outlet channel, and the third cavity is communicated with the oil inlet channel; the piston is positioned in the first cavity and used for driving the valve rod to move along the length direction of the valve rod, and the piston is fixedly connected with one end of the valve rod; the valve clack is located the third chamber, and the other end fixed connection of valve clack and valve rod, second chamber offer be used for with the opening of third chamber intercommunication, valve clack and the stifled cooperation that seals of opening. The utility model can control the opening and closing of the oil cut-off valve according to the gas pressure in the air compressor system, can automatically adjust the oil supply quantity according to the gas pressure, and has the characteristics of quick and flexible closing and opening of the valve, good sealing performance, long service life and the like.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to an oil cut-off valve controlled by gas pressure.
Background
The oil cut-off valve is widely applied to modern manufacturing engineering technology, particularly in the field of air compressors, the oil cut-off valve is a main part on the air compressor, the main function of the oil cut-off valve on the air compressor is that too much oil enters a main engine when the air compressor is started to cause the phenomenon of incapability of starting, and when the air compressor is stopped, the oil cut-off valve timely cuts off an oil way to prevent lubricating oil from being sprayed out from an air inlet valve due to high internal air pressure.
As the oil cut-off valve technology is more and more applied to various industries, the performance requirements of the existing oil cut-off valve are continuously improved, and the development of new oil cut-off valve products which meet the market requirements is not easy. The prior common fuel cut-off valve has the following problems and disadvantages: when the oil-break valve is not opened, the air compressor is started and can immediately cause high-temperature shutdown; when the fuel cut-off valve is blocked in an open state, fuel injection can be caused, so that the existing fuel cut-off valve can not meet the market demand far away.
Through search, the following results are found:
the utility model discloses a chinese utility model patent that the bulletin number is CN201751640U discloses a pneumatic mechanical type fuel cut-off valve, including valve body, piston rod and piston are installed in the valve pocket of valve body, and the one end of valve pocket is the oil feed chamber, and the other end of valve pocket links to each other with the compressor gas vent, and the piston is installed in the one end that the valve pocket is close to compressor pressure air supply, is equipped with the oil outlet chamber that is linked together with the oil feed end of valve pocket on the valve body, and the one end of piston rod links to each other with the piston, characterized by the other end of piston rod on be equipped with and install reset spring and be equipped with one with the oil feed chamber of valve pocket and go out the annular boss that has sealed inclined plane that the oil outlet chamber cuts off. The utility model has the advantages of simple structure, safety and reliability. However, the utility model still has the following problems: the closing and opening are not rapid enough and timely; the return spring is easy to fatigue and lose efficacy, thereby influencing the service life of the product.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide the oil cut-off valve controlled by gas pressure, which has the characteristics of quick and flexible closing and opening of the valve, good sealing performance and long service life, and is safer, more stable and more reliable in use.
According to one aspect of the utility model, the oil cut-off valve controlled by gas pressure is provided, and comprises a valve body, a piston, a valve clack and a valve rod, wherein the piston, the valve clack and the valve rod are arranged in the valve body; a first cavity, a second cavity and a third cavity are sequentially arranged in the valve body, the first cavity is communicated with the air inlet channel, the second cavity is communicated with the oil outlet channel, and the third cavity is communicated with the oil inlet channel; the piston is positioned in the first cavity and used for driving the valve rod to move along the length direction of the valve rod, and the piston is fixedly connected with one end of the valve rod; the valve clack is located in the third chamber, the valve clack with the other end fixed connection of valve rod, the second chamber offer be used for with the opening of third chamber intercommunication, the valve clack with the stifled cooperation that seals of opening.
Preferably, the end part of the valve body is provided with a valve cover, and the valve cover is connected with the valve body in a sealing mode through an elastic check ring.
Preferably, a first sealing ring is further arranged between the valve cover and the valve body.
Preferably, a second sealing ring is arranged between the piston and the valve body.
Preferably, a third sealing ring is arranged between the piston and the valve rod.
Preferably, a valve flap cover is arranged below the valve flap, and a sealing element is arranged between the valve flap and the valve flap cover.
Preferably, the seal comprises two oppositely mounted sealing rings.
Preferably, the valve clack is fixedly connected with the valve clack cover through a bolt, and a gasket is arranged between the valve clack cover and the bolt.
Preferably, the valve body is of a cast integral structure.
Preferably, the valve stem forms an integral structure with the valve flap and the piston.
Compared with the prior art, the utility model has the following beneficial effects:
the oil cut-off valve controlled by gas pressure can control the opening and closing of the oil cut-off valve according to the gas pressure in a cooling system, and can automatically adjust the oil supply quantity according to the gas pressure; the oil cut-off valve and the air inlet valve of the air compressor are mutually assisted, and the oil cut-off valve has the characteristics of quick and flexible closing and opening of the valve, good sealing performance, long service life and the like, so that the product is safer, more stable and more reliable to use.
Drawings
Other features, objects and advantages of the utility model will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic cross-sectional view of a fuel cut-off valve utilizing gas pressure control in accordance with an embodiment of the present invention;
in the figure: 1 is the valve body, 2 is the valve rod, 3 is the circlip, 4 is the valve gap, 5 is the valve clack, 6 is the valve clack lid, 7 is the piston, 8 is the sealing member, 9 is the third sealing washer, 10 is the bolt, 11 is the gasket, 12 is first sealing washer, 13 is the second sealing washer.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the utility model, but are not intended to limit the utility model in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the utility model. All falling within the scope of the present invention.
The embodiment of the utility model provides an oil cut-off valve controlled by gas pressure, when an air compressor is not used, as a screw rod in a machine head can not be soaked by cooling oil for a long time, the oil cut-off valve is added into a cooling system, as shown in figure 1, the oil cut-off valve comprises a valve body 1, and a piston 7, a valve clack 5 and a valve rod 2 which are arranged in the valve body 1; the valve body 1 is internally provided with a first cavity, a second cavity and a third cavity which are sequentially arranged, the first cavity is communicated with an air inlet channel, namely is connected with a pressure air source of an air compressor, the second cavity is communicated with an oil outlet channel, and the third cavity is communicated with an oil inlet channel; the piston 7 is positioned in the first cavity, namely is arranged in one end of the valve body 1 close to a pressure air source of the air compressor, the piston 7 is used for driving the valve rod 2 to move along the length direction of the valve rod 2, and the piston 7 is fixedly connected with one end of the valve rod 2; valve clack 5 is located the third cavity, and valve clack 5 and valve rod 2's other end fixed connection, second cavity offer be used for with the opening of third cavity intercommunication, valve clack 5 and opening plugging cooperation, the opening of second cavity is opened or closed when valve clack 5 moves along the length direction of valve rod 2 to open or close the fuel cut-off valve rapidly.
In a specific embodiment, the end of the valve body 1 is provided with a valve cover 4, the valve cover 4 is connected with the valve body 1 in a sealing way through a flexible retainer ring 3, and the flexible retainer ring 3 can be a hole flexible retainer ring.
In a specific embodiment, a first sealing ring 12 is further arranged between the valve cover 4 and the valve body 1, the first sealing ring 12 may be an O-shaped sealing ring, and the first sealing ring 12 and the elastic check ring 3 are used in combination, which is beneficial to improving the sealing performance between the valve cover 4 and the valve body 1.
In a specific embodiment, a second sealing ring 13 is arranged between the piston 7 and the valve body 1, and the second sealing ring 13 can be an O-shaped sealing ring.
In a specific embodiment, a third sealing ring 9 is arranged between the piston 7 and the valve rod 2, and the third sealing ring 9 can be an O-shaped sealing ring.
In a specific embodiment, a valve flap cover 6 is arranged below the valve flap 5, and a sealing piece 8 is arranged between the valve flap 5 and the valve flap cover 6 to ensure the tightness of the connection between the two.
Specifically, the sealing element 8 includes two sealing rings, specifically two O-rings, which are installed in opposite directions, so as to achieve the effects of rapid and flexible closing and opening and good sealing performance.
In a specific embodiment, the valve flap 5 is fixedly connected with the valve flap cover 6 through a bolt 10, a gasket 11 is arranged between the valve flap cover 6 and the bolt 10, and specifically, the bolt 10 can be a hexagon flange bolt, which can play a role in connecting stably and reliably. Of course, in other embodiments, other kinds of bolts may be used, and other connection manners may be used for the valve flap 5 and the valve flap cover 6, which are not described herein again.
In a specific embodiment, the valve body 1 is of a cast-in-one structure so as to facilitate processing, and the cast-in-one fuel cut-off valve has the advantages of compact structure, simplicity and attractive appearance.
In a specific embodiment, the valve rod 2, the valve clack 5 and the piston 7 form an integrated structure, which is beneficial to realizing a guiding and centering function, avoids the occurrence of a blocking fault during closing and opening, and can ensure the normal operation of equipment.
The oil cut-off valve controlled by gas pressure in the embodiment has the following working principle: when the air compressor works, the generated compressed air and the piston 7 move towards the direction of the third chamber under the driving of the air to drive the valve rod 2 and the valve clack 5 to move in the same direction, so that the opening of the second chamber is opened, the oil cut-off valve is rapidly opened, and cooling oil can circularly cool the head screw of the air compressor in the system. When the air compressor does not work, no air source exists, the valve clack 5 can rapidly block the opening of the second chamber, the oil cut-off valve is in a closed state, cooling oil in the oil-water separator is cut off to return to the screw, and lubricating oil with high air pressure and high oil temperature is prevented from being sprayed out from the air inlet valve. In addition, according to the pressure of the gas, the opening degree of the opening of the second chamber is different, so that the purpose of automatically adjusting the oil supply amount according to the pressure of the gas can be realized.
The oil cut-off valve controlled by gas pressure in the embodiment of the utility model can control the opening and closing of the oil cut-off valve according to the gas pressure in the cooling system, and can automatically adjust the oil supply amount according to the gas pressure; the oil cut-off valve and the air inlet valve of the air compressor are mutually assisted, and the air compressor oil cut-off valve has the characteristics of quick and flexible closing and opening of the valve, good sealing performance, long service life and the like, so that the product is safer, more stable and more reliable to use.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the utility model.
Claims (10)
1. The oil cut-off valve controlled by gas pressure is characterized by comprising a valve body, a piston, a valve clack and a valve rod, wherein the piston, the valve clack and the valve rod are arranged in the valve body;
a first cavity, a second cavity and a third cavity are sequentially arranged in the valve body, the first cavity is communicated with the air inlet channel, the second cavity is communicated with the oil outlet channel, and the third cavity is communicated with the oil inlet channel;
the piston is positioned in the first cavity and used for driving the valve rod to move along the length direction of the valve rod, and the piston is fixedly connected with one end of the valve rod; the valve clack is located in the third chamber, the valve clack with the other end fixed connection of valve rod, the second chamber offer be used for with the opening of third chamber intercommunication, the valve clack with the stifled cooperation that seals of opening.
2. The gas pressure controlled fuel cut-off valve as claimed in claim 1, wherein a valve cover is provided at an end of the valve body, and the valve cover is sealingly connected to the valve body through a resilient collar.
3. The gas pressure controlled fuel cut-off valve as claimed in claim 2, wherein a first sealing ring is further disposed between the valve cover and the valve body.
4. The gas pressure controlled fuel cut-off valve according to claim 1, wherein a second sealing ring is provided between the piston and the valve body.
5. The gas pressure controlled fuel cut-off valve according to claim 1, wherein a third packing is provided between the piston and the valve stem.
6. The gas pressure controlled fuel cut-off valve according to claim 1, wherein a valve flap cover is provided under the valve flap, and a sealing member is provided between the valve flap and the valve flap cover.
7. The gas pressure controlled fuel cut-off valve according to claim 6, wherein the sealing member comprises two oppositely installed sealing rings.
8. The gas pressure controlled fuel cut-off valve of claim 6, wherein the valve flap is fixedly connected with the valve flap cover through a bolt, and a gasket is arranged between the valve flap cover and the bolt.
9. The gas pressure controlled fuel cut-off valve as claimed in claim 1, wherein the valve body is a cast integral structure.
10. The gas pressure controlled fuel cut-off valve of claim 1, wherein the valve stem forms an integral structure with the valve flap and the piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122971100.7U CN216242384U (en) | 2021-11-30 | 2021-11-30 | Oil cut-off valve controlled by gas pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122971100.7U CN216242384U (en) | 2021-11-30 | 2021-11-30 | Oil cut-off valve controlled by gas pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216242384U true CN216242384U (en) | 2022-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122971100.7U Active CN216242384U (en) | 2021-11-30 | 2021-11-30 | Oil cut-off valve controlled by gas pressure |
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| CN (1) | CN216242384U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107875740A (en) * | 2017-11-03 | 2018-04-06 | 宁波行泰环保科技有限公司 | A kind of DPF cleaning plants based on gas explosion |
| CN116903091A (en) * | 2023-08-18 | 2023-10-20 | 广东海洋大学 | Sea water desalination system based on wave energy |
-
2021
- 2021-11-30 CN CN202122971100.7U patent/CN216242384U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107875740A (en) * | 2017-11-03 | 2018-04-06 | 宁波行泰环保科技有限公司 | A kind of DPF cleaning plants based on gas explosion |
| CN107875740B (en) * | 2017-11-03 | 2023-11-17 | 国网浙江省电力有限公司台州供电公司 | DPF cleaning device based on gas explosion |
| CN116903091A (en) * | 2023-08-18 | 2023-10-20 | 广东海洋大学 | Sea water desalination system based on wave energy |
| CN116903091B (en) * | 2023-08-18 | 2024-01-19 | 广东海洋大学 | Sea water desalination system based on wave energy |
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