CN208996953U - A kind of protection structure for shutting down oil-break for two stages of compression screw air compressor - Google Patents
A kind of protection structure for shutting down oil-break for two stages of compression screw air compressor Download PDFInfo
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- CN208996953U CN208996953U CN201821848079.3U CN201821848079U CN208996953U CN 208996953 U CN208996953 U CN 208996953U CN 201821848079 U CN201821848079 U CN 201821848079U CN 208996953 U CN208996953 U CN 208996953U
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- solenoid valve
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- gas
- normally closed
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Abstract
The utility model discloses a kind of protection structures that oil-break is shut down for two stages of compression screw air compressor, including shutting down oil cut-off valve, normally open solenoid valve and normally closed solenoid valve, the oil outlet shut down oil cut-off valve and be installed on Oil-gas Separation bucket, gas piping is equipped between the air intake of host intake valve and the gas outlet of Oil-gas Separation bucket, normally closed solenoid valve and normally open solenoid valve have been sequentially connected in series on the gas piping, threeway is additionally provided on the gas piping between normally open solenoid valve and normally closed solenoid valve, the threeway and the air inlet for shutting down oil cut-off valve pass through piping connection, and, normally open solenoid valve is connect with host controller electric signal, normally closed solenoid valve is connect by intermediate relay with host controller electric signal.It is small that the utility model can make two stages of compression screw air compressor be obstructed when being again started up after shutting down oil-break, has many advantages, such as that restarting is fast, safety is good, stability is high, versatile, has obvious practical value.
Description
Technical field
The utility model is to be related to a kind of protection structure that oil-break is shut down for two stages of compression screw air compressor, belongs to sky
Technical field of pressing machine.
Background technique
In recent years, as enterprises more and more in society start to focus on environmental protection and energy saving, two stages of compression screw air compressor
It is greatly developed and is widely applied.But the structure of current two stages of compression screw air compressor designs, and will lead to two-stage pressure
After shutdown, a large amount of lubricating oil are still in host chamber and main exhaust mouth pipeline contracting screw air compressor, thus
It causes restarting difficult, generally requires repeatedly to start, very big impact is brought to equipment or operator, not only influences machine
Operating efficiency, seriously can also stall burn up main motor, service life is shortened, so that the double spiral shells of enterprise's operation and maintenance two stages of compression
The cost of bar air compressor machine is very high.
Utility model content
For the above problem present in the prior art, it is double for two stages of compression that the purpose of the utility model is to provide one kind
Screw air compressor shuts down the protection structure of oil-break, existing after a shutdown to solve existing two stages of compression screw air compressor
Lubricating oil easily retains in the problem in host chamber and main exhaust mouth pipeline, makes improved two stages of compression twin-screw pneumatics
Machine has many advantages, such as that restarting is fast, safety is good, stability is high, versatile.
To achieve the above object, the technical solution adopted in the utility model is as follows:
A kind of protection structure for shutting down oil-break for two stages of compression screw air compressor, including two stages of compression twin-screw pneumatics
Host controller, host intake valve and the Oil-gas Separation bucket of machine, the air intake of host intake valve are communicated with atmosphere, Oil-gas Separation bucket
Top be equipped with gas outlet；It is characterized by also including one to shut down oil cut-off valve, a normally open solenoid valve and a normally closed solenoid valve, institute
It states and shuts down the oil outlet that oil cut-off valve is installed on Oil-gas Separation bucket, in the air intake of host intake valve and the gas outlet of Oil-gas Separation bucket
Between be equipped with gas piping, the normally open solenoid valve and normally closed solenoid valve be connected on the gas piping, and normally open solenoid valve with
The gas outlet of Oil-gas Separation bucket is connected, and normally closed solenoid valve is connected with the air intake of host intake valve, and normally opened being located at
It is additionally provided with threeway on gas piping between solenoid valve and normally closed solenoid valve, the threeway is by another gas piping and shuts down oil-break
The air inlet of valve is connected, also, the normally open solenoid valve is connect with host controller electric signal, and the normally closed solenoid valve is in
Between relay electric signal connect, the intermediate relay connect with host controller electric signal.
A kind of preferred embodiment is in series with time-delay relay, the delay relay between host controller and main motor
Device is connect with host controller and the equal electric signal of main motor.
A kind of preferred embodiment, the shutdown oil cut-off valve are Pneumatic check valve.
A kind of preferred embodiment, the normally open solenoid valve and normally closed solenoid valve are 2/2-way solenoid valve.
Compared to the prior art, the utility model has following advantageous effects:
By using protection structure described in the utility model, it can make two stages of compression screw air compressor after shutting down oil-break
The lubricating oil retained in host chamber and main exhaust mouth pipeline can be exhausted in time, so that it is small to be obstructed when making to be again started up,
Restarting is fast, can effectively avoid motor rotation blockage and burns motor risk, has that safety is good, stability is high, versatile etc. excellent
Point, therefore, the utility model have obvious progressive and practical value compared with the existing technology.
Detailed description of the invention
Fig. 1 is a kind of protection that oil-break is shut down for two stages of compression screw air compressor provided by the embodiment of the utility model
The schematic diagram of structure；
Fig. 2 is the protection structure provided by the embodiment of the utility model that oil-break is shut down for two stages of compression screw air compressor
Electrical block diagram；
Fig. 3 is the protection structure provided by the embodiment of the utility model that oil-break is shut down for two stages of compression screw air compressor
Gas circuit structure schematic diagram when two stages of compression screw air compressor operates normally；
Fig. 4 is the protection structure provided by the embodiment of the utility model that oil-break is shut down for two stages of compression screw air compressor
Gas circuit structure schematic diagram when two stages of compression screw air compressor is shut down.
Figure label is schematically as follows: 1, host controller；2, host intake valve；2-1, air intake；3, Oil-gas Separation bucket；3-
1, gas outlet；3-2, oil outlet；4, oil cut-off valve is shut down；4-1, air inlet；5, normally open solenoid valve；6, normally closed solenoid valve；7, gas
Pipeline；8, threeway；9, another gas piping；10, intermediate relay；11, main motor；12, time-delay relay；13, compressor
Oil circuit.
Specific embodiment
The technical solution of the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Embodiment
Incorporated by reference to shown in Fig. 1 and Fig. 2: provided in this embodiment a kind of for two stages of compression screw air compressor shutdown oil-break
Protection structure, host controller 1, host intake valve 2 and Oil-gas Separation bucket 3 including two stages of compression screw air compressor are main
The air intake 2-1 of machine intake valve 2 is communicated with atmosphere, and the top of Oil-gas Separation bucket 3 is equipped with gas outlet 3-1；It further include that a shutdown is disconnected
Oil valve 4, a normally open solenoid valve 5 and a normally closed solenoid valve 6, the oil outlet 3- for shutting down oil cut-off valve 4 and being installed on Oil-gas Separation bucket 3
2, gas piping 7 is equipped between the air intake 2-1 of host intake valve 2 and the gas outlet 3-1 of Oil-gas Separation bucket 3, it is described normally opened
Solenoid valve 5 and normally closed solenoid valve 6 are connected on the gas piping 7, and the gas outlet 3-1 of normally open solenoid valve 5 and Oil-gas Separation bucket 3
It is connected, normally closed solenoid valve 6 is connected with the air intake 2-1 of host intake valve 2, and is being located at normally open solenoid valve 5 and normally closed
Threeway 8 is additionally provided on gas piping between solenoid valve 6, the threeway 8 by another gas piping 9 with shut down oil cut-off valve 4 into
Port 4-1 is connected, also, the normally open solenoid valve 5 is connect with 1 electric signal of host controller, and the normally closed solenoid valve 6 is in
Between 10 electric signal of relay connect, the intermediate relay 10 connect with 1 electric signal of host controller.
In the present embodiment, be in series with time-delay relay 12 between host controller 1 and main motor 11, the delay after
Electric appliance 12 is connect with host controller 1 and the equal electric signal of main motor 11.
In addition, the shutdown oil cut-off valve 4 is preferably Pneumatic check valve, using designed gas circuit as power source, not only
Can energy saving, and be conducive to carry out in time to shut down oil-break emptying operation.
The normally open solenoid valve 5 and normally closed solenoid valve 6 are 2/2-way solenoid valve, commercially available to obtain.
When two stages of compression screw air compressor described in the present embodiment operates normally, due to going out with Oil-gas Separation bucket 3
What port 3-1 was connected is normally open solenoid valve 5, and what is be connected with the air intake 2-1 of host intake valve 2 is normally closed solenoid valve 6, because
This, the outlet of Oil-gas Separation bucket 3 can be conveyed to threeway 8 by normally open solenoid valve 5, and be transported to by threeway 8 and shut down oil cut-off valve 4
Air inlet 4-1 (is please referred to shown in Fig. 3), to keep shutdown oil cut-off valve 4 in the open state under the promotion of admission pressure, in turn
So that oil outlet 3-2 and compressor oil circuit 13 is in connected state, ensure that the normal operation of two stages of compression screw air compressor；When
Host controller 1 receives stopping signal, it will makes that normally open solenoid valve 5 is in closed state and normally closed solenoid valve 6 is in folding
State, to make gas and threeway 8 in the gas circuit between normally open solenoid valve 5 and normally closed solenoid valve 6 and shut down oil cut-off valve 4
Air inlet 4-1 between gas circuit in gas pass through and be flowed into entering for host intake valve 2 in the normally closed solenoid valve 6 of folding condition
Port 2-1 to be discharged into atmosphere and (please refer to shown in Fig. 4), and shutdown oil cut-off valve 4 at this time because do not have gas source power effect, because
And be in close state, and then the oil outlet 3-2 of Oil-gas Separation bucket 3 and compressor oil circuit 13 is made to be at dissengaged positions, it is real
Shutdown oil-break is showed.When being in series with time-delay relay 12 between host controller 1 and main motor 11, by keeping host electric
The delay of machine 11 is shut down, so as to be further ensured that two stages of compression screw air compressor can exhaust host chamber in time after shutting down oil-break
The lubricating oil retained in room and main exhaust mouth pipeline.
It is visible in summary: by using protection structure described in the utility model, two stages of compression twin-screw pneumatics can be made
Restarting of the machine after shutting down oil-break is fast, and has many advantages, such as that safety is good, stability is high, versatile, and therefore, this is practical
It is novel that there is obvious progressive and practical value compared with the existing technology.
It is last it is necessarily pointed out that: the foregoing is merely the preferable specific embodiments of the utility model, but this
The protection scope of utility model is not limited thereto, and anyone skilled in the art discloses in the utility model
In technical scope, any changes or substitutions that can be easily thought of, should be covered within the scope of the utility model.
Claims (4)
1. a kind of protection structure for shutting down oil-break for two stages of compression screw air compressor, including two stages of compression screw air compressor
Host controller, host intake valve and Oil-gas Separation bucket, the air intake of host intake valve communicates with atmosphere, Oil-gas Separation bucket
Top is equipped with gas outlet；It is characterized by also including one to shut down oil cut-off valve, a normally open solenoid valve and a normally closed solenoid valve, described
Shut down oil cut-off valve and be installed on the oil outlet of Oil-gas Separation bucket, host intake valve air intake and Oil-gas Separation bucket gas outlet it
Between be equipped with gas piping, the normally open solenoid valve and normally closed solenoid valve be connected on the gas piping, and normally open solenoid valve and oil
The gas outlet of gas separating barrel is connected, and normally closed solenoid valve is connected with the air intake of host intake valve, and is being located at normally opened electricity
It is additionally provided with threeway on gas piping between magnet valve and normally closed solenoid valve, the threeway is by another gas piping and shuts down oil cut-off valve
Air inlet be connected, also, the normally open solenoid valve is connect with host controller electric signal, the normally closed solenoid valve and intermediate
The connection of relay electric signal, the intermediate relay are connect with host controller electric signal.
2. protection structure according to claim 1, it is characterised in that: be in series between host controller and main motor
Time-delay relay, the time-delay relay are connect with host controller and the equal electric signal of main motor.
3. protection structure according to claim 1, it is characterised in that: the shutdown oil cut-off valve is Pneumatic check valve.
4. protection structure according to claim 1, it is characterised in that: the normally open solenoid valve and normally closed solenoid valve are two
Two three-way electromagnetic valves of position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821848079.3U CN208996953U (en) | 2018-11-11 | 2018-11-11 | A kind of protection structure for shutting down oil-break for two stages of compression screw air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821848079.3U CN208996953U (en) | 2018-11-11 | 2018-11-11 | A kind of protection structure for shutting down oil-break for two stages of compression screw air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208996953U true CN208996953U (en) | 2019-06-18 |
Family
ID=66806628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821848079.3U Active CN208996953U (en) | 2018-11-11 | 2018-11-11 | A kind of protection structure for shutting down oil-break for two stages of compression screw air compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208996953U (en) |
-
2018
- 2018-11-11 CN CN201821848079.3U patent/CN208996953U/en active Active
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