CN207195165U - A kind of all-metal screw pump - Google Patents
A kind of all-metal screw pump Download PDFInfo
- Publication number
- CN207195165U CN207195165U CN201720928728.XU CN201720928728U CN207195165U CN 207195165 U CN207195165 U CN 207195165U CN 201720928728 U CN201720928728 U CN 201720928728U CN 207195165 U CN207195165 U CN 207195165U
- Authority
- CN
- China
- Prior art keywords
- metal
- rod body
- screw rod
- stator
- metal stator
- 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.)
- Ceased
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- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The utility model discloses a kind of all-metal screw pump, including metal stator and metallic rotator, the metallic rotator includes connector and eccentric setting in the screw rod body of connector one end, the metal stator is sheathed on screw rod body, the inner surface of metal stator and the outer surface gap of screw rod body coordinate, and metal stator has cooperatively formed helical cavity with screw rod body, the inner surface of the metal stator, the outer surface of screw rod body are provided with nitration case.A kind of all-metal screw pump uses metal stator and metallic rotator, eliminate inner lining structure, and then can meet that hot environment works, and there is the characteristics of corrosion-resistant, resistance to dry grinding, and the outer surface gap of the inner surface of metal stator and screw rod body coordinates, and cooperatively form helical cavity, so as to reduce the moment of torsion in work, in addition, by setting up nitration case, anti-wear performance is substantially increased, extends the service life of stator, rotor.
Description
Technical field
It the utility model is related to oil production equipment field, more particularly to a kind of all-metal screw pump.
Background technology
Screw pump is as one in mining Technology Underground very potential advantageous new technology, each oil of world in recent years
Tanaka has obtained more and more extensive application.It has initial outlay small, and surface drive is simple in construction, easy for installation, accounts for
The features such as ground area is small, and pump efficiency is high.
At present, the screw pump of in the market, mainly it is process including stator, rotor and liner, liner by rubber, its
It can not work in high temperature environments, and the screw pump on existing market, its stator, rotor pole are fragile, and it is short to there is service life
The problem of, it is badly in need of solving.
Utility model content
The purpose of this utility model is in view of the above-mentioned problems, a kind of all-metal screw pump is provided, to solve existing full gold
Stator, the rotor pole of category screw pump are fragile, and service life is short, the problem of can not working in high temperature environments.
The purpose of this utility model is to be achieved through the following technical solutions：
A kind of all-metal screw pump, including metal stator and metallic rotator, the metallic rotator include connector and bias
The screw rod body of connector one end is arranged at, the metal stator is sheathed on screw rod body, the inner surface and spiral shell of metal stator
The outer surface gap of swing arm body coordinates, and metal stator and screw rod body have cooperatively formed helical cavity, the metal stator it is interior
Surface, the outer surface of screw rod body are provided with nitration case.
As a kind of preferred scheme of the present utility model, the thickness of the nitration case on the inner surface of the metal stator is
0.02~0.08mm, the thickness of the nitration case on the outer surface of the screw rod body is 0.01~0.06mm.
As a kind of preferred scheme of the present utility model, the inner surface of the metal stator and the outer surface of screw rod body
Clearance distance is 0.1~0.3mm；By using gap with the clearance distance merged by metal stator and the rotation body of rod between the two
Control is in 0.1~0.3mm, to cause the moment of torsion in work to reduce.
As a kind of preferred scheme of the present utility model, outer spiral shell is provided with the outer wall of the both ends termination of the metal stator
Line；And then it is easy to be connected with the oil pipe of oil well.
As a kind of preferred scheme of the present utility model, connection external screw thread is provided with the connector；And then be easy to
Well rod connects.
The beneficial effects of the utility model are that a kind of all-metal screw pump uses metal stator and metallic rotator, takes
Disappeared inner lining structure, and then can meet that hot environment works, and has the characteristics of corrosion-resistant, resistance to dry grinding, and metal stator
The outer surface gap of inner surface and screw rod body coordinates, and cooperatively forms helical cavity, so as to reduce the moment of torsion in work, this
Outside, by setting up nitration case, anti-wear performance is substantially increased, extends the service life of stator, rotor.
Brief description of the drawings
Fig. 1 is a kind of structural representation of all-metal screw pump of the utility model.
Embodiment
Further illustrate the technical solution of the utility model below in conjunction with the accompanying drawings and by embodiment.It can manage
Solution, embodiment described herein are used only for explaining the utility model, rather than to restriction of the present utility model.
It refer to shown in Fig. 1, in the present embodiment, a kind of all-metal screw pump, including metal stator 1 and metallic rotator,
External screw thread is provided with the outer wall of the both ends termination of the metal stator 1, the metallic rotator includes connector 2 and eccentric setting
Screw rod body 3 in the lower end of connector 2, connection external screw thread is provided with the connector 2, the metal stator 1 is sheathed on spiral shell
On swing arm body 3, and metal stator 1 has cooperatively formed helical cavity 4, the inner surface and spiral of the metal stator 1 with screw rod body 3
The outer surface gap of the body of rod 3 coordinates, and the inner surface of metal stator 1 and the clearance distance of the outer surface of screw rod body 3 are
0.2mm, the inner surface of the metal stator 1, the outer surface of screw rod body 3 are provided with nitration case, the metal stator 1 it is interior
The thickness of nitration case on surface is 0.05mm, and the thickness of the nitration case on the outer surface of the screw rod body 3 is 0.03mm.
Although it is noted that in the present embodiment, between the inner surface of metal stator 1 and the outer surface of screw rod body 3
Stand-off distance is from for 0.2mm, but the utility model not limited to this, between the inner surface of metal stator 1 and the outer surface of screw rod body 3
For stand-off distance from that can also be 0.1mm or 0.3mm or positioned at any value between the two, 0.2mm selection be with reference to installation, production
Preferred scheme after the factors such as cost, working order.
It is noted that although in the present embodiment, the thickness of the nitration case on the inner surface of metal stator 1 is
0.05mm, the thickness of the nitration case on the outer surface of screw rod body 3 is 0.03mm, but the utility model not limited to this, metal
The thickness of nitration case on the inner surface of stator 1 can also be 0.02mm or 0.08mm or positioned at any value between the two,
The thickness of nitration case on the outer surface of screw rod body 3 can also be for 0.01mm or 0.06mm or positioned at any number between the two
It is worth, in the present embodiment, the thickness of the nitration case on the inner surface of metal stator 1 is designed as 0.05mm, by the outer of screw rod body 3
The thickness of nitration case on surface is designed as 0.03mm so that the thickness of the nitration case of the inner surface of metal stator 1 is more than screw rod
The thickness of nitration case on the outer surface of body 3, it is that the preferred scheme after life-span and production cost is used in combination.
Above example simply elaborates general principle and characteristic of the present utility model, and the utility model is not by above-mentioned implementation
Example limitation, on the premise of the spirit and scope of the utility model is not departed from, the utility model also has various change and change, these
Changes and modifications are both fallen within claimed the scope of the utility model.The utility model requires protection scope is by appended right
Claim defines.
Claims (5)
- A kind of 1. all-metal screw pump, it is characterised in that：Including metal stator and metallic rotator, the metallic rotator includes connection Head and eccentric setting be sheathed in the screw rod body of connector one end, the metal stator on screw rod body, metal stator it is interior Surface and the outer surface gap of screw rod body coordinate, and metal stator has cooperatively formed helical cavity, the metal with screw rod body The inner surface of stator, the outer surface of screw rod body are provided with nitration case.
- A kind of 2. all-metal screw pump according to claim 1, it is characterised in that：On the inner surface of the metal stator The thickness of nitration case is 0.02~0.08mm, the thickness of the nitration case on the outer surface of the screw rod body for 0.01~ 0.06mm。
- A kind of 3. all-metal screw pump according to claim 1 or 2, it is characterised in that：The inner surface of the metal stator Clearance distance with the outer surface of screw rod body is 0.1~0.3mm.
- A kind of 4. all-metal screw pump according to claim 1, it is characterised in that：The both ends termination of the metal stator External screw thread is provided with outer wall.
- A kind of 5. all-metal screw pump according to claim 1, it is characterised in that：It is outer that connection is provided with the connector Screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720928728.XU CN207195165U (en) | 2017-07-27 | 2017-07-27 | A kind of all-metal screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720928728.XU CN207195165U (en) | 2017-07-27 | 2017-07-27 | A kind of all-metal screw pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207195165U true CN207195165U (en) | 2018-04-06 |
Family
ID=61799051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720928728.XU Ceased CN207195165U (en) | 2017-07-27 | 2017-07-27 | A kind of all-metal screw pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207195165U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115404435A (en) * | 2022-08-17 | 2022-11-29 | 无锡恒信北石科技有限公司 | Nitriding tool and process for screw pump stator |
-
2017
- 2017-07-27 CN CN201720928728.XU patent/CN207195165U/en not_active Ceased
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115404435A (en) * | 2022-08-17 | 2022-11-29 | 无锡恒信北石科技有限公司 | Nitriding tool and process for screw pump stator |
| CN115404435B (en) * | 2022-08-17 | 2023-09-05 | 无锡恒信北石科技有限公司 | Nitriding tool and process for screw pump stator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| IW01 | Full invalidation of patent right | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20190418 Decision number of declaring invalidation: 39813 Granted publication date: 20180406 |