CN208364417U - A kind of centrifugation jet vacuum pump from tape starting injector - Google Patents
A kind of centrifugation jet vacuum pump from tape starting injector Download PDFInfo
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- CN208364417U CN208364417U CN201820969374.8U CN201820969374U CN208364417U CN 208364417 U CN208364417 U CN 208364417U CN 201820969374 U CN201820969374 U CN 201820969374U CN 208364417 U CN208364417 U CN 208364417U
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- Prior art keywords
- injection pipe
- vacuum pump
- diffuser
- output end
- starting injector
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Abstract
The utility model discloses a kind of centrifugation jet vacuum pumps from tape starting injector, including centrifugal pump body, the output end of the centrifugal pump body is fixedly connected with starting injector, starting injector includes injection pipe, the input terminal of the injection pipe is fixedly connected with the output end of centrifugal pump body, diffuser is arranged with outside the injection pipe, the diffuser is fixedly connected with centrifugal pump body, the side wall of the diffuser is equipped with working gas entrance, and the gap between the output end and diffuser of the injection pipe forms nozzle.The utility model combines the structure and advantage of centrifugal pump, Pulsed Jet Pump and gas ejector, eliminate intermediate conversion, transitional link, height merges, there is an advantage in that: it can be low by gas source starting, applied widely, high-efficient, reliable operation, compact-sized, cost and maintenance cost, due to ratio of performance to price height, be conducive to promote the use.
Description
Technical field
The utility model relates to vaccum-pumping equipment technical field more particularly to a kind of centrifugation jet streams from tape starting injector
Vacuum pump.
Background technique
Jet vacuum pump is to carry out mass transfer using shearing and the turbulent diffusion effect of jet stream to pass energy, without rotatable parts, tool
There are simple structure, reliable operation, low cost, operation and maintenance cost low, is usually used in power plant, chemical industry, tobacco, salt manufacturing etc. and needs to take out
The occasion of vacuum.The working principle of jet vacuum pump determines that its efficiency is lower, research shows that using pulsed flow as its work
Power can effectively improve the jet stream efficiency of pump, and the jet vacuum pump of this form is referred to as pulsing jet vacuum pump.
It needs to convert high-speed jet by nozzle for the higher working water of pressure when jetting stream vacuum pump work, and higher pressure
The working water of power is usually provided by centrifugal pump, if directly using the high-speed rotating impeller in centrifugal pump as jet vacuum pump
Nozzle comes using will cancel conversion between centrifugal pump and jet vacuum pump, transitional link, and generate pulsing jet effect
Fruit, so that working efficiency be substantially improved.
Patent CN103967810B discloses a kind of centrifugal vacuum pump, by centrifugal pump and jet stream turbomolecular vacuum pump from structure
In conjunction with, but still fall within one kind of pulsing jet vacuum pump.However the vacuum pump in the patent is before activation, in mixing chamber space not
Vacuum is caused, water can not enter water chamber and rectangular guide vane using siphonage, and centrifugal vacuum pump also just can not work normally, because
This, centrifugal vacuum pump is needed on startup by low-pressure water from penstocks, by tulwar type impeller jet stream, slowly mixed
It closes interior and establishes low vacuum.When vacuum reaches 60kPa or so, siphon valve could be gradually opened, gradually closes pressure water inlet valve
Door, recycles completely in siphon water pipe to siphon water and slowly opens air intake valve again.However some occasion inconvenience use pressure water
And high-pressure air source is sufficient, it is therefore desirable to develop a kind of wider array of centrifugation jet vacuum pump of the scope of application.
For this purpose, it is proposed that a kind of solve the above problems from the centrifugation jet vacuum pump of tape starting injector.
Utility model content
Purpose of the utility model is to solve jet vacuum pump working efficiency in the prior art is low, narrow scope of application
The problem of, and a kind of centrifugation jet vacuum pump from tape starting injector proposed.
To achieve the goals above, the utility model adopts the technical scheme that
A kind of centrifugation jet vacuum pump from tape starting injector, including centrifugal pump body, the output end of the centrifugal pump body
It is fixedly connected with starting injector, starting injector includes injection pipe, the output of the input terminal and centrifugal pump body of the injection pipe
End is fixedly connected, and is arranged with diffuser outside the injection pipe, the diffuser is fixedly connected with centrifugal pump body, the diffuser
Side wall is equipped with working gas entrance, and the gap between the output end and diffuser of the injection pipe forms nozzle.
Preferably, the most narrow place's area of the nozzle is 0.15-0.3 times of injection pipe discharge area.
Preferably, the entrance angle of throat β of the nozzle is within the scope of 40 ° -90 °.
Preferably, the outlet angle of flare α of the nozzle is within the scope of 10 ° -30 °.
Preferably, the angle theta on the outside of the injection pipe output end is within the scope of 20 ° -40 °, the injection pipe output end
Wall thickness 2-5mm.
Preferably, the angle γ on the outside of the diffuser output end is within the scope of 4 ° -14 °.
Compared with prior art, the utility model has the following beneficial effects: the utility model is from the centrifugation of tape starting injector
Jet vacuum pump combines the structure and advantage of centrifugal pump, Pulsed Jet Pump and gas ejector, eliminates intermediate conversion, transition
Link, height merge, and can pass through gas source starting, applied widely, high-efficient, reliable operation, compact-sized, cost and maintenance
It is at low cost, due to ratio of performance to price height, be conducive to promote the use.
Detailed description of the invention
Fig. 1 be the utility model proposes it is a kind of from tape starting injector centrifugation jet vacuum pump structural schematic diagram；
Fig. 2 is Fig. 1 partial structurtes enlarged diagram.
In figure: 1 centrifugal pump body, 2 injection pipes, 3 working gas entrances, 4 diffusers, 5 nozzles.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.
Referring to Fig.1-2, a kind of centrifugation jet vacuum pump from tape starting injector, including centrifugal pump body 1, centrifugal pump body 1
Output end be fixedly connected with starting injector, starting injector includes injection pipe 2, it should be noted that 2 output end of injection pipe
The angle theta in outside is within the scope of 20 ° -40 °, 2 output end wall thickness 2-5mm of injection pipe, the input terminal and centrifugal pump body of injection pipe 2
1 output end is fixedly connected, and diffuser 4 is arranged with outside injection pipe 2, it is worth mentioning at this point that, the angle on the outside of 4 output end of diffuser
Within the scope of 4 ° -14 °, diffuser 4 is fixedly connected γ with centrifugal pump body 1, and the side wall of diffuser 4 is equipped with working gas entrance 3,
Gap between the output end and diffuser 4 of injection pipe 2 forms nozzle 5, it should be noted that the most narrow place's area of nozzle 5 is spray
0.15-0.3 times for penetrating 2 discharge area of pipe, further, the entrance angle of throat β of nozzle 5 is within the scope of 40 ° -90 °, further
, the outlet angle of flare α of nozzle 5 is within the scope of 10 ° -30 °.
In the utility model, when being centrifuged jetting stream vacuum pump startup, high pressure gas enters nozzle by working gas entrance 3
5 then high speed ejection, gas forms certain vacuum in suction pump, so that working water forms pulse after being able to enter centrifugal pump body 1
Jet stream, volume, which is inhaled to be sucked after gas enters injection pipe 2, to be gradually uniformly mixed, final discharge of boosting of slowing down subsequently into diffuser 4.
Starting injector can also be used when being centrifuged jet vacuum pump and operating normally, for aspirating more gases, and the outlet of elevator pump
Pressure.
The utility model combines the structure and advantage of centrifugal pump, Pulsed Jet Pump and gas ejector, eliminates centre
Conversion, transitional link, height merge, can by gas source starting, applied widely, high-efficient, reliable operation, it is compact-sized,
Cost and maintenance cost are low, due to ratio of performance to price height, are conducive to promote the use.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this
Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (6)
1. a kind of centrifugation jet vacuum pump from tape starting injector, including centrifugal pump body (1), which is characterized in that the centrifugation
The output end of the pump housing (1) is fixedly connected with starting injector, and starting injector includes injection pipe (2), the injection pipe (2) it is defeated
Enter end to be fixedly connected with the output end of centrifugal pump body (1), diffuser (4), the diffuser are arranged with outside the injection pipe (2)
(4) it is fixedly connected with centrifugal pump body (1), the side wall of the diffuser (4) is equipped with working gas entrance (3), the injection pipe
(2) gap between output end and diffuser (4) forms nozzle (5).
2. a kind of centrifugation jet vacuum pump from tape starting injector according to claim 1, which is characterized in that the spray
The most narrow place's area of mouth (5) is 0.15-0.3 times of injection pipe (2) discharge area.
3. a kind of centrifugation jet vacuum pump from tape starting injector according to claim 1, which is characterized in that the spray
The entrance angle of throat β of mouth (5) is within the scope of 40 ° -90 °.
4. a kind of centrifugation jet vacuum pump from tape starting injector according to claim 1, which is characterized in that the spray
The outlet angle of flare α of mouth (5) is within the scope of 10 ° -30 °.
5. a kind of centrifugation jet vacuum pump from tape starting injector according to claim 1, which is characterized in that the spray
The angle theta on the outside of pipe (2) output end is penetrated within the scope of 20 ° -40 °, injection pipe (2) the output end wall thickness 2-5mm.
6. a kind of centrifugation jet vacuum pump from tape starting injector according to claim 1, which is characterized in that the expansion
Angle γ on the outside of separate tube (4) output end is within the scope of 4 ° -14 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820969374.8U CN208364417U (en) | 2018-06-22 | 2018-06-22 | A kind of centrifugation jet vacuum pump from tape starting injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820969374.8U CN208364417U (en) | 2018-06-22 | 2018-06-22 | A kind of centrifugation jet vacuum pump from tape starting injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208364417U true CN208364417U (en) | 2019-01-11 |
Family
ID=64926414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820969374.8U Active CN208364417U (en) | 2018-06-22 | 2018-06-22 | A kind of centrifugation jet vacuum pump from tape starting injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208364417U (en) |
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2018
- 2018-06-22 CN CN201820969374.8U patent/CN208364417U/en active Active
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