CN208236782U - A kind of diffusion pump that steam jet speed can be improved - Google Patents
A kind of diffusion pump that steam jet speed can be improved Download PDFInfo
- Publication number
- CN208236782U CN208236782U CN201820555236.5U CN201820555236U CN208236782U CN 208236782 U CN208236782 U CN 208236782U CN 201820555236 U CN201820555236 U CN 201820555236U CN 208236782 U CN208236782 U CN 208236782U
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- China
- Prior art keywords
- pump core
- pump
- steam jet
- improved
- lock pin
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- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
A kind of diffusion pump that steam jet speed can be improved, is related to diffusion pump field.Umbrella shaped spray nozzle is improved, conical lock pin and pump core outer is set to form airflow channel, when the subtended angle angle of umbrella shaped spray nozzle is between 40-45 degree, speed of the steam jet at nozzle, which can crouch, reaches 300m/s or more, and it is ejected into pump chamber inner wall and forms the downward steam jet in the biggish direction of area, more air can be carried to output flow, it is more satisfactory to be evacuated effect.This is reasonable in design, substantially increases the working efficiency of diffusion pump.
Description
Technical field
The utility model relates to diffusion pump field, in particular to a kind of diffusion pump that steam jet speed can be improved.
Background technique
The diffusion pump that steam jet speed can be improved is current one of the most important tool for obtaining vacuum, and principle is logical
The pumped gas molecule crossed under molecular state diffuses into the oil vapour of high speed directed movement, is transmitted by momentum and is taken
Band completes air-extraction function to prime.The existing diffusion Unit injector that steam jet speed can be improved, subtended angle angle are generally set
50~60 degree are set to, the steam jet ejected from nozzle is almost close to diversion pipe and is sprayed straight down, although in nozzle
Place's speed can reach 280m/s or so, but steam jet area coverage is smaller, is not injected into pump chamber inner wall and has only formed one
A very little at closed circuit, cause the volume of air that steam jet is carried by this time smaller, cause be evacuated effect pay no attention to
Think.
Summary of the invention
In view of the deficienciess of the prior art, the purpose of the utility model is to provide a kind of steam jet speed of can be improved
Diffusion pump, device design is reasonable, structure is simple, is easily installed and safeguards.
The technical scheme adopted by the utility model is a kind of diffusion pump that steam jet speed can be improved, including have
Hollow oil pocket, air inlet and air outlet outer cover, be socketed in shroud surface water-cooled jacket, the heating device of oil pocket bottom is set
And pump core square on the heating is set, pump core upper end is equipped with umbrella shaped spray nozzle, is characterized in that, pump core is cylinder,
Upper opening outer is set at the top of pump core, the internal diameter of the outer is slightly larger than the internal diameter of pump core, in the umbrella shaped spray nozzle inner wall
On be additionally provided with coniform lock pin, the coniform lock pin is plugged in the opening of pump core outer, outside coniform lock pin and pump core
Gap between forms airflow channel.
In above scheme, the heating device includes heating wire and control cabinet, and heating wire is arranged in oil liquid to oil liquid
Heating, the both ends of heating wire are stretched out outside pump core and are connect with control cabinet, and the control cabinet connects controller.
The beneficial effects of the utility model are: the diffusion pump of steam jet speed can be improved in this, umbrella shaped spray nozzle is changed
Into making conical lock pin and pump core outer form airflow channel, when the subtended angle angle of umbrella shaped spray nozzle is between 40-45 degree, steam
Speed of the jet stream at nozzle, which can crouch, reaches 300m/s or more, and it is downward to be ejected into the pump chamber inner wall formation biggish direction of area
Steam jet, more air can be carried to output flow, it is more satisfactory to be evacuated effect.This is reasonable in design, significantly
Improve the working efficiency of diffusion pump.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without creative efforts, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the structural schematic diagram that the diffusion pump of steam jet speed can be improved in the utility model embodiment；
Number explanation is as follows in figure: 1 outer cover, 1-1 oil pocket, 1-2 air inlet, 2 water-cooled jackets, 3 gas outlets, 4 keep off oily elbow, 5
Control cabinet, 6 heating wire, 7 oil liquid, 8 pump cores, 9 outers, 10 umbrella shaped spray nozzles, 10-1 cone lock pin.
Specific embodiment
Keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing 1 and specific
Embodiment is described in further detail the utility model.
Embodiment 1:
The diffusion pump that steam jet speed can be improved in the present embodiment, including have hollow oil pocket 1-1 and air inlet 1-2
Outer cover 1, the outside of outer cover 1 is set water-cooled jacket 2, the heating device of the bottom oil pocket 1-1 is set and is arranged in heating device
The pump core 8 of top is additionally provided with umbrella shaped spray nozzle 10 in the upper end of pump core 8, and pump core 8 is cylinder, is equipped at the top of pump core 8 upper
The outer 9 of opening, the internal diameter of outer 9 are slightly larger than the internal diameter of pump core 8, are additionally provided with coniform lock pin on 10 inner wall of umbrella shaped spray nozzle
10-1, coniform lock pin 10-1 are plugged in the opening of 8 outer of pump core, the sky between 8 outer coniform lock pin 10-1 and pump core
Gap forms airflow channel.The subtended angle of umbrella shaped spray nozzle 10 is 40 degree, and the steam jet that nozzle sprays shape can be kept for one section in pump chamber
Longer high-speed jet, effect are best.
The internal diameter of pump core 8 is set as 4mm.It is also connected with the gear oil elbow 4 with gas outlet 3, on outer cover 1 convenient for extraction gas
Body.
Heating device in the present embodiment includes heating wire 6 and control cabinet 5, and heating wire 6 is arranged in oil liquid 7 to oil liquid 7
Heating, the both ends of heating wire 6 are stretched out pump core 8 and are connect with the control cabinet 5 being located at outside pump core 8.It is equipped in the oil liquid 7 of the present embodiment
Multiple groups heating device, this structure increase heating surface (area) (HS, improve heat conduction velocity, keep loss lower, not only save the energy
Cost, and the diffusion tired heating-up time is shortened, improve its working efficiency.The control cabinet of each heating device is separately connected the external world
Controller acquires oil liquid temperature in conjunction with temperature sensor, realizes the control respectively to each heating device.In addition, this add
Thermal structure, also can avoid due to some heating device damage and influence heating effect, user can as needed at any time into
Row replacement, it is convenient and reliable.
Embodiment 2:
The present embodiment the difference from embodiment 1 is that, the subtended angle of umbrella shaped spray nozzle 10 is 43 degree.
Embodiment 3:
The present embodiment the difference from embodiment 1 is that, the subtended angle of umbrella shaped spray nozzle 10 is 45 degree.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replacement, it should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be with the power
Subject to the protection scope that benefit requires.
Claims (2)
1. a kind of diffusion pump that steam jet speed can be improved, including outer cover, set with hollow oil pocket, air inlet and air outlet
Connect outer cover outer surface water-cooled jacket, oil pocket bottom is set heating device and setting square pump core on the heating, pump core
Upper end is equipped with umbrella shaped spray nozzle, which is characterized in that pump core is cylinder, and upper opening outer is set at the top of pump core, the outer
Internal diameter is slightly larger than the internal diameter of pump core, and coniform lock pin, the coniform lock pin are additionally provided on the umbrella shaped spray nozzle inner wall
It is plugged in the opening of pump core outer, the gap between coniform lock pin and pump core outer forms airflow channel.
2. the diffusion pump of steam jet speed can be improved as described in claim 1, which is characterized in that the heating device packet
Include heating wire and control cabinet, heating wire, which is arranged in oil liquid, heats oil liquid, the both ends of heating wire stretch out pump core it is outer and with control
Cabinet connection, the control cabinet connect controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820555236.5U CN208236782U (en) | 2018-04-19 | 2018-04-19 | A kind of diffusion pump that steam jet speed can be improved |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820555236.5U CN208236782U (en) | 2018-04-19 | 2018-04-19 | A kind of diffusion pump that steam jet speed can be improved |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208236782U true CN208236782U (en) | 2018-12-14 |
Family
ID=64583379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820555236.5U Expired - Fee Related CN208236782U (en) | 2018-04-19 | 2018-04-19 | A kind of diffusion pump that steam jet speed can be improved |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208236782U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114427550A (en) * | 2022-03-04 | 2022-05-03 | 山东省宝丰镀膜有限公司 | Zone heating formula diffusion pump |
-
2018
- 2018-04-19 CN CN201820555236.5U patent/CN208236782U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114427550A (en) * | 2022-03-04 | 2022-05-03 | 山东省宝丰镀膜有限公司 | Zone heating formula diffusion pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20181214 Termination date: 20190419 |