CN203161531U - Hollow stainless steel threaded rod - Google Patents
Hollow stainless steel threaded rod Download PDFInfo
- Publication number
- CN203161531U CN203161531U CN 201320180828 CN201320180828U CN203161531U CN 203161531 U CN203161531 U CN 203161531U CN 201320180828 CN201320180828 CN 201320180828 CN 201320180828 U CN201320180828 U CN 201320180828U CN 203161531 U CN203161531 U CN 203161531U
- Authority
- CN
- China
- Prior art keywords
- threaded rod
- stainless steel
- hollow stainless
- screw
- steel threaded
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model relates to a vacuum acquisition device and in particular relates to a hollow stainless steel threaded rod. The hollow stainless steel threaded rod is composed of a rod body and hollow helical teeth. Compared with the prior art, the hollow stainless steel threaded rod provided by the utility model has the beneficial effect of being capable of being cooled, so that the purpose of reducing the surface temperature of the threaded rod is reached and the service life of the threaded rod is greatly prolonged because of obvious reduction of the working surface temperature of the threaded rod; the weight of the hollow stainless steel threaded rod is lightened and the process of coating an anticorrosion painting on the working surface of the threaded rod is omitted; and the running accuracy of the threaded rod is improved, the problem of the falling-off of the anticorrosion painting is solved, and the production cost of the threaded rod is reduced.
Description
Technical field
The utility model relates to pumping equipment, is specifically related to the screw rod of screw vacuum pump.
Background technique
Screw vacuum pump has been proved to be the dry vacuum pump of function admirable, it has, and ultimate pressure is low, vacuum system is simple and direct, active chamber does not have any medium, can obtain clean vacuum, advantages such as applied widely, environmental protection, be applied to all trades and professions more and more, replace traditional water ring vaccum pump and oil-sealed vacuum pump.The screw rod of screw vacuum pump in the market all is solid construction, because the work cavity temperature is higher, is easy to generate medium and solidifies carbon distribution, has seriously influenced the working life of vacuum pump.
The model utility content
The purpose of this utility model is in order to solve the problem that existing solid screw vacuum pump exists, a kind of screw spiral tooth is provided the stainless steel hollow screw that is hollow structure.
For achieving the above object, the technical solution adopted in the utility model is: a kind of stainless steel hollow screw, to be formed by the body of rod and helical tooth, and described helical tooth is hollow structure.
Stainless steel hollow screw of the present utility model compared with prior art has the following beneficial effect that has:
1. adopt the stainless steel hollow screw, can cool off screw rod, thereby reach the purpose that reduces the screw surface temperature, screw rod working surface temperature significantly reduces, and has greatly improved the operating life of screw rod;
2. adopt the stainless steel hollow screw, alleviated screw rod weight, saved the operation of screw rod working surface coating corrosion-inhibiting coating; Improve the running accuracy of screw rod, solved the problem that corrosion-inhibiting coating comes off, reduced the cost of production of screw rod.
Description of drawings
Fig. 1 is the structural representation of stainless steel hollow screw of the present utility model.
Embodiment
As shown in Figure 1, stainless steel hollow screw of the present invention is made up of the body of rod 1 and helical tooth 2, and helical tooth 2 is hollow structure, forms the cooling chamber of screw rod.
Stainless steel hollow screw of the present invention can charge into cooling medium in the cooling chamber of screw rod, thereby reduces the work cavity temperature, prolongs the working life of screw rod and vacuum pump.
Stainless steel hollow screw of the present invention, the pitch of helical tooth have equidistant and two kinds of displacements.What present embodiment provided is uniform pitch stainless steel hollow screw.
Claims (2)
1. a stainless steel hollow screw is made up of the body of rod and helical tooth, it is characterized in that: described helical tooth is hollow structure.
2. stainless steel hollow screw according to claim 1 is characterized in that: described stainless steel hollow screw is divided into two kinds of uniform pitch and variable pitchs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320180828 CN203161531U (en) | 2013-04-03 | 2013-04-03 | Hollow stainless steel threaded rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320180828 CN203161531U (en) | 2013-04-03 | 2013-04-03 | Hollow stainless steel threaded rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203161531U true CN203161531U (en) | 2013-08-28 |
Family
ID=49022720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320180828 Expired - Lifetime CN203161531U (en) | 2013-04-03 | 2013-04-03 | Hollow stainless steel threaded rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203161531U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195715A (en) * | 2013-04-03 | 2013-07-10 | 威海智德真空科技有限公司 | Stainless steel hollow screw rod |
| CN109185137A (en) * | 2018-11-12 | 2019-01-11 | 苏州通润驱动设备股份有限公司 | A kind of rotor cooling structure of permanent magnetism one oil free screw air compressor machine |
-
2013
- 2013-04-03 CN CN 201320180828 patent/CN203161531U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195715A (en) * | 2013-04-03 | 2013-07-10 | 威海智德真空科技有限公司 | Stainless steel hollow screw rod |
| CN109185137A (en) * | 2018-11-12 | 2019-01-11 | 苏州通润驱动设备股份有限公司 | A kind of rotor cooling structure of permanent magnetism one oil free screw air compressor machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130828 |
|
| CX01 | Expiry of patent term |