CN208749561U - Jetting type oil return valve for screw air compressor - Google Patents
Jetting type oil return valve for screw air compressor Download PDFInfo
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- CN208749561U CN208749561U CN201821228609.4U CN201821228609U CN208749561U CN 208749561 U CN208749561 U CN 208749561U CN 201821228609 U CN201821228609 U CN 201821228609U CN 208749561 U CN208749561 U CN 208749561U
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- oil return
- channel
- air compressor
- jetting type
- valve
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Abstract
The utility model provides a kind of jetting type oil return valve for screw air compressor, and the channel of connection air inlet and air outlet is provided in valve body, oil sealing oil return opening is connect and is connected in the channel；The bore of the outlet side of air inlet is less than the bore of inlet end, and is less than the bore in channel；Connecing oil sealing oil return opening includes one for installing the cavity of check valve and the pipeline of connection a cavity and channel；The air of air compressor discharge, which is flowed by inlet end to outlet side, increases flow velocity formation jet stream；When jet stream is from the flow channel of outlet side, Venturi effect is generated；The oil in oil sealing oil return opening is connect under the action of Venturi effect, check valve is opened and is inhaled into pipeline from gas outlet ejection.Technical problem underlying to be solved in the utility model is to provide a kind of jetting type oil return valve for screw air compressor, when there is light weight oil leak in main shaft oil sealing, may continue to using, place oil liquid leakage caused by pollute, reduce the downtime of machine.
Description
Technical field
The utility model relates to a kind of air compressor more particularly to screw air compressors.
Background technique
Permanent magnetism screw air compressor is originally by an oil return line, and in the air inlet of host, principle is for oil return position
The machine oil of host front end is drawn onto air inlet by the suction generated using air inlet, and principle is will be before host using the suction that air inlet generates
The machine oil at end is drawn onto air inlet, but since air inlet is big, pipeline is small, in addition having an one way stop peturn valve on pipeline, in check-valves
There is spring, there are resistance, actually machine can not generate suction on oil return line at runtime, only close in air intake valve
Stage generates faint suction, the oil of front end can not be drawn onto air inlet, excessive so as to cause machine oil, generates pollution.
Utility model content
Technical problem underlying to be solved in the utility model is to provide a kind of jet stream for screw air compressor
Formula oil return valve, when there is light weight oil leak in main shaft oil sealing, may continue to using, place oil liquid leakage caused by pollute, reduce machine
The downtime of device.
In order to solve the above technical problems, the utility model provides a kind of jet stream for screw air compressor
Formula oil return valve, comprising: valve body, and be arranged on valve body air inlet, gas outlet and connect oil sealing oil return opening；
The channel of connection air inlet and air outlet is provided in the valve body, the oil sealing oil return opening that connects is connected to the channel
In；The bore of the outlet side of the air inlet is less than the bore of inlet end, and is less than the bore in channel；It is described to connect oil sealing oil return opening
Including one for installing the cavity of check valve and the pipeline of connection a cavity and channel；
The air of air compressor discharge, which is flowed by the inlet end to outlet side, increases flow velocity formation jet stream；It is described to penetrate
When stream is from the flow channel of outlet side, Venturi effect is generated；The oil in oil sealing oil return opening is connect under the action of Venturi effect,
It opens check valve and is inhaled into pipeline from the gas outlet and spray.
In a preferred embodiment: the air inlet includes the second part of a cylindrical first part, a cylinder,
And the Part III in truncated cone-shaped of connection in the first and second；
The diameter of the first part is greater than second part, and the one end of first part far from second part is the air inlet
End, the one end of second part far from first part is outlet side.
In a preferred embodiment: the diameter of the second part and the ratio of length are between 1:3.5-1:4.
In a preferred embodiment: the gas outlet includes the Part V of a cylindrical Part IV, a cylinder,
And it is connected to the Part VI in truncated cone-shaped in Part IV and Part V；
The diameter of the Part IV is less than Part V, and the one end of Part IV far from Part V is the air inlet
End, the one end of Part V far from Part IV is outlet side.
In a preferred embodiment: the diameter of the first part and Part IV ratio is 1:2.
In a preferred embodiment: the diameter of the Part IV and Part V ratio is 1:2.25.
In a preferred embodiment: the Part IV is also connected with the 6th of a truncated cone-shaped in the side far from Part V
Part；Described lesser one end of Part VI diameter is connect with Part V.
In a preferred embodiment: the check valve is the ball of a setting in the cavities；
The first opening that the cavity close to the side of the pipeline there is diameter to be greater than the ball, one far from pipeline
The second opening that there is diameter to be less than the ball for side；In the presence of not having jet stream in the channel, the ball is returned in jetting type
A side roll in oil valve under the action of air-flow away from the pipeline, to seal second opening；In the channel
In the presence of having jet stream, the ball under the suction of Venturi effect towards the side roll against the pipeline, thus
Open second opening.
Compared to the prior art, the technical solution of the utility model have it is following the utility model has the advantages that
A kind of jetting type oil return valve for screw air compressor provided by the utility model, with reference to literary mound is utilized
In effect principle, when the compressed air of positive pressure enters air inlet.As the bore of air inlet is gradually reduced, compressed air
Pressure gradually increases, and air velocity also becomes larger therewith, and high-speed jet enters in channel from the outlet side of air inlet, in air inlet
A vacuum degree is generated on rear side of outlet side, the air for allowing for connecing in oil sealing oil return opening in this way is inhaled into channel.If oil sealing returns
When hydraulic fluid port has oil leak generation, leak out oil also just enter in channel therewith, then with compressed air from gas outlet flow out.This
When sample avoids oil leak and occurs, pollute caused by oil liquid leakage so that and its can continue to run, reduce the frequency of shutdown maintenance
Rate.
Detailed description of the invention
Fig. 1 is the structure sectional view of the preferred embodiment in the utility model.
Specific embodiment
The preferred embodiment of the utility model is described with reference to the drawings as follows:
With reference to Fig. 1, a kind of jetting type oil return valve for screw air compressor, comprising: valve body, and be arranged in valve
Air inlet 1, gas outlet 2 on body and connect oil sealing oil return opening 3；
The channel 4 of connection air inlet 1 and gas outlet 2 is provided in the valve body, the oil sealing oil return opening 3 that connects is connected to this
In channel 4；The bore of the outlet side of the air inlet 1 is less than the bore of inlet end, and is less than the bore in channel 4；It is described to connect oil
Envelope oil return opening 3 includes one for installing the cavity 32 of check valve 31 and the pipeline 33 of connection a cavity 32 and channel 4；
The air of air compressor discharge, which is flowed by the inlet end to outlet side, increases flow velocity formation jet stream；It is described to penetrate
When stream is from outlet side flow channel 4, Venturi effect is generated；The oil in oil sealing oil return opening 3 is connect in the effect of Venturi effect
Under, it opens check valve 31 and is inhaled into pipeline 33 from the gas outlet 2 ejection.
Above-mentioned a kind of jetting type oil return valve for screw air compressor, with reference to the original that Venturi effect is utilized
Reason, when the compressed air of positive pressure enters air inlet 1.As the bore of air inlet 1 is gradually reduced, the pressure of compressed air is gradually
Increase, air velocity also becomes larger therewith, and high-speed jet enters in channel 4 from the outlet side of air inlet 1, in the outlet of air inlet 1
End rear side generates a vacuum degree, allows for connecing the air in oil sealing oil return opening 3 in this way and is inhaled into channel 4.If oil sealing oil return
When mouthful having oil leak generation, the oil leaked out also just enters in channel 4 therewith, then as compressed air is flowed out from gas outlet 2.This
When sample avoids oil leak and occurs, pollute caused by oil liquid leakage so that and its can continue to run, reduce the frequency of shutdown maintenance
Rate.
Further include following preferred design in the utility model:
The air inlet 1 includes a cylindrical first part, a cylindrical second part, and is connected to first
Divide and the Part III in truncated cone-shaped in second part；
The diameter of the first part is greater than second part, and the one end of first part far from second part is the air inlet
End, the one end of second part far from first part is outlet side.The diameter of the second part and the ratio of length are in 1:3.5-
Between 1:4.
The gas outlet 2 includes a cylindrical Part IV, a cylindrical Part V, and is connected to the 4th
Divide and the Part VI in truncated cone-shaped in Part V；The diameter of the Part IV is less than Part V, and Part IV is remote
It is the inlet end from one end of Part V, the one end of Part V far from Part IV is outlet side.
In addition, the diameter of the first part and Part IV ratio is 1:2.The diameter of the Part IV and Part V
Than for 1:2.25.The Part IV is also connected with the Part VI of a truncated cone-shaped in the side far from Part V；Described 6th
The lesser one end of section diameter is connect with Part V.It avoids being formed in the air inlet end part of gas outlet when the setting of Part VI
Turbulent flow.
In a preferred embodiment: the check valve 31 is a ball being arranged in cavity 32；
The first opening that the cavity 32 close to the side of the pipeline 33 there is diameter to be greater than the ball, far from pipeline
The second opening that there is diameter to be less than the ball for 33 side；In the presence of not having jet stream in the channel 4, the ball is being penetrated
Away from a side roll of the pipeline 33 under the action of air-flow in streaming oil return valve, to seal second opening；Institute
It states in the presence of having jet stream in channel 4, the ball is under the suction of Venturi effect towards against the one of the pipeline 33
Side roll, to open second opening.
The preferable specific embodiment of the above, only the utility model, but the design concept of the utility model is not
It is confined to this, anyone skilled in the art within the technical scope disclosed by the utility model, utilizes this design
The change that unsubstantiality is carried out to the utility model belongs to the behavior for invading scope of protection of the utility model.
Claims (8)
1. a kind of jetting type oil return valve for screw air compressor, characterized by comprising: valve body, and be arranged in valve
Air inlet, gas outlet on body and connect oil sealing oil return opening；
The channel of connection air inlet and air outlet is provided in the valve body, the oil sealing oil return opening that connects is connected in the channel；
The bore of the outlet side of the air inlet is less than the bore of inlet end, and is less than the bore in channel；It is described to connect oil sealing oil return opening packet
One is included for installing the cavity of check valve and the pipeline of connection a cavity and channel；
The air of air compressor discharge, which is flowed by the inlet end to outlet side, increases flow velocity formation jet stream；The jet stream from
When in the flow channel of outlet side, Venturi effect is generated；The oil in oil sealing oil return opening is connect under the action of Venturi effect, is opened
Check valve, which is inhaled into pipeline from the gas outlet, to be sprayed.
2. a kind of jetting type oil return valve for screw air compressor according to claim 1, it is characterised in that: institute
Stating air inlet includes a cylindrical first part, a cylindrical second part, and is connected to first part and second
The Part III in truncated cone-shaped in point；
The diameter of the first part is greater than second part, and the one end of first part far from second part is the inlet end, the
Two partially away from first part one end be outlet side.
3. a kind of jetting type oil return valve for screw air compressor according to claim 2, it is characterised in that: institute
The diameter of second part and the ratio of length are stated between 1:3.5-1:4.
4. a kind of jetting type oil return valve for screw air compressor according to claim 3, it is characterised in that: institute
Stating gas outlet includes a cylindrical Part IV, a cylindrical Part V, and is connected to Part IV and the 5th
The Part VI in truncated cone-shaped in point；
The diameter of the Part IV is less than Part V, and the one end of Part IV far from Part V is the inlet end, the
Five partially away from Part IV one end be outlet side.
5. a kind of jetting type oil return valve for screw air compressor according to claim 4, it is characterised in that: institute
The diameter ratio for stating first part and Part IV is 1:2.
6. a kind of jetting type oil return valve for screw air compressor according to claim 5, it is characterised in that: institute
The diameter ratio for stating Part IV and Part V is 1:2.25.
7. a kind of jetting type oil return valve for screw air compressor according to claim 6, it is characterised in that: institute
It states Part IV and is also connected with the Part VI of a truncated cone-shaped in the side far from Part V；The Part VI diameter is lesser
One end is connect with Part V.
8. a kind of jetting type oil return valve for screw air compressor described in any one of -7 according to claim 1,
Be characterized in that: the check valve is the ball of a setting in the cavities；
The cavity close to the side of the pipeline there is diameter to be greater than the first opening of the ball, and the side far from pipeline has
There is diameter to be less than the second opening of the ball；In the presence of not having jet stream in the channel, the ball is in jetting type oil return valve
Away from a side roll of the pipeline under the action of middle air-flow, to seal second opening；It is penetrated in the channel
In the presence of stream, the ball under the suction of Venturi effect towards the side roll against the pipeline, to open
Second opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821228609.4U CN208749561U (en) | 2018-08-01 | 2018-08-01 | Jetting type oil return valve for screw air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821228609.4U CN208749561U (en) | 2018-08-01 | 2018-08-01 | Jetting type oil return valve for screw air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208749561U true CN208749561U (en) | 2019-04-16 |
Family
ID=66059746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821228609.4U Active CN208749561U (en) | 2018-08-01 | 2018-08-01 | Jetting type oil return valve for screw air compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208749561U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869299A (en) * | 2018-08-01 | 2018-11-23 | 厦门东亚机械工业股份有限公司 | A kind of jetting type oil return valve for screw air compressor |
-
2018
- 2018-08-01 CN CN201821228609.4U patent/CN208749561U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869299A (en) * | 2018-08-01 | 2018-11-23 | 厦门东亚机械工业股份有限公司 | A kind of jetting type oil return valve for screw air compressor |
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