CN202493430U - Single-screw pump stator - Google Patents
Single-screw pump stator Download PDFInfo
- Publication number
- CN202493430U CN202493430U CN2012200312391U CN201220031239U CN202493430U CN 202493430 U CN202493430 U CN 202493430U CN 2012200312391 U CN2012200312391 U CN 2012200312391U CN 201220031239 U CN201220031239 U CN 201220031239U CN 202493430 U CN202493430 U CN 202493430U
- Authority
- CN
- China
- Prior art keywords
- stator
- stator core
- metal sleeve
- screw pump
- pump 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.)
- Expired - Lifetime
Links
- 239000002184 metal Substances 0.000 claims abstract description 21
- 210000004907 gland Anatomy 0.000 claims description 10
- 239000004809 Teflon Substances 0.000 claims description 4
- 229920006362 Teflon® Polymers 0.000 claims description 4
- 239000007787 solid Substances 0.000 abstract description 5
- 239000000835 fiber Substances 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 239000003292 glue Substances 0.000 abstract description 2
- 238000002347 injection Methods 0.000 abstract description 2
- 239000007924 injection Substances 0.000 abstract description 2
- -1 polytetrafluoroethylene Polymers 0.000 abstract 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract 2
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract 2
- 238000005299 abrasion Methods 0.000 abstract 1
- 238000003754 machining Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000004073 vulcanization Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005987 sulfurization reaction Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Images
Landscapes
- Rotary Pumps (AREA)
Abstract
The utility model discloses a single-screw pump stator, which comprises a stator core (1) and a metal sleeve (2), and the single-screw pump stator is characterized in that the stator core (1) is a combined body formed by overlapping a plurality of polytetrafluoroethylene sheets, and is put into the metal sleeve (2); a plurality of limiting pins (3) are arranged between the metal sleeve (2) and the stator core (2); pressing covers (4) are arranged at two ends of the stator core (2); and locking nuts (5) are arranged out of the pressing covers (4). As the stator core of the single-screw pump stator is formed by combining the plurality of polytetrafluoroethylene sheets, special equipment for glue injection, vulcanization and the like are unnecessary; the machining cost is low and the manufacturing is convenient; two ends of the single-screw pump stator are pressed tightly by the pressing covers; the rotation is limited by using the limiting pins, so that an internal helix cavity is formed; and the internal helix cavity is sealed inside the metal sleeve by using two locking nuts so as to form a complete stator. The single-screw pump stator is small in thermal deformation, small in abrasion, durable in transportation, long in service life, good in sealing effect and is applicable for conveying substances of high temperature and high viscosity or substances containing suspended matters such as solid grains or short fibers.
Description
Technical field
The utility model belongs to a kind of pump housing parts, particularly relates to a kind of stator of helical rotor pump.
Background technique
Helical rotor pump is widely used in some fields such as oil, chemical industry, building, environmental protection, boats and ships, weaving, metallurgy, mining, printing; It has compact structure, good manufacturability, little, in light weight, the head pressure advantages of higher of volume; Both be fit to carry low viscous medium, also be fit to carry suspended matter and the very high medium of viscosity that contains solid particle or short fibre.The stator of one of vital part all adopts the resilient material of rubber-like to form in the helical rotor pump at present; This type of stator mostly is the even solid body of wall unevenness; With the stator " rubber sleeve " of compacting with adhesive bond in metal sleeve, i.e. the compound body of rubber and metal.For make bond firm difficult drop-off, need to use suitable Bond, and metal sleeve carried out acid pickling and rust removing handle, also want special devices such as working pressure glue-injection machine, vulcanizer in the working process.There is following shortcoming in the compound body stator of this rubber and metal: must adopt interference fit when stator cooperates with rotor 1.; This is because the line of contact of rotor and stator can not reach theoretic sealing fully; And the pressure of medium can make rubber-like stator generation certain elastic deformation when operation, causes medium " puncture " line of contact to cause leakage; 2. defectives such as because the stator rubber wall unevenness is even, and the shrinkage of rubber also will be inhomogeneous during compacting, promptly the shrinkage at stator two ends is obviously greater than the stator middle part, and magnitude of interference is inhomogeneous, easy to wear when causing the cooperation of stator and rotor; 3. stator easy dry friction of work when not having medium or medium not enough burns out stator; 4. stator inner helical surface size receives Influence of Temperature, when temperature raises, receives the influence of rubber swelling, and stator inner helical surface size is changed, and is prone to the fault of occurrence temperature rising locking.
Summary of the invention
The purpose of the utility model is to overcome the above-mentioned deficiency of existing technology, and a kind of improved helical rotor pump stator is provided, and it makes simple, and thermal distortion is little, and it is little to wear and tear, anti-dried running, and long service life, good sealing effect is difficult for leaking.
For reaching above-mentioned purpose, the utility model is taked following technological scheme: the utility model comprises: stator core, metal sleeve is characterized in that: stator core is loaded in the metal sleeve for the assemblying body by some teflon plate stacks; Be provided with some position limit pins between metal sleeve and the stator core, outside the two ends of stator core, be equiped with gland, gland is equiped with locknut outward.
The utility model is taked technique scheme, has following beneficial effect: the stator core of the utility model is to be combined by a plurality of teflon stator pieces, does not need special devices such as injecting glue, sulfuration, and processing cost is low, easy to make.Two ends compress with gland, and with position limit pin restriction rotation, make it form the internal spiral die cavity, and the internal spiral die cavity is encapsulated in the complete stator of formation in the metal sleeve with two locknuts with it.The utility model thermal distortion is little, and it is little to wear and tear, anti-dried running, long service life, and good sealing effect is applicable to the medium of carrying high temperature, high viscosity, containing the suspended matter of solid particle or short fibre.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is described in detail.
Fig. 1 is the utility model structure diagram.
Indicate among the figure: 1-stator core, 2-metal sleeve, 3-position limit pin, 4-gland, 5-locknut.
Embodiment
By shown in Figure 1, the utility model comprises: stator core 1, metal sleeve 2, position limit pin 3, gland 4, locknut 5, stator core 1 are by the assemblying body of some teflon plate stacks, are loaded in the metal sleeve 2; Be provided with some position limit pins 3 between metal sleeve 2 and the stator core 1, outside the two ends of stator core 1, be equiped with gland 4, the gland 4 outer locknuts 5 that are equiped with.
Stator core is to process according to cross-sectional dimension punching press on polyfluortetraethylene plate of stator inner helical surface, and multi-disc makes up and is rotated into the stator inner helical surface by certain angle, respectively has positioning spline around the stator core.
Described gland 4 is installed on the two ends of the stator core 1 of combination forming respectively, and with the skew of position limit pin 3 restriction stator cores 1, described position limit pin 3 two ends are fixed on the gland 4.
Described locknut 5 is an outside thread, cooperates with metal sleeve 2, and stator core 1 assembly parts is enclosed in metal sleeve 2 inside.
The described helical rotor pump stator of the utility model cooperates with the rotor that matches, and rotor is done planetary motion to accomplish the suction and the discharge of medium through driving mechanism in stator.Be applicable to the medium of carrying high temperature, high viscosity, containing the suspended matter of solid particle or short fibre.
Claims (1)
1. helical rotor pump stator, it comprises: stator core (1), metal sleeve (2) is characterized in that: stator core (1) is loaded in the metal sleeve (2) for the assemblying body by some teflon plate stacks; Be provided with some position limit pins (3) between metal sleeve (2) and the stator core (2), outside the two ends of stator core (2), be equiped with gland (4), the outer locknut (5) that is equiped with of gland (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200312391U CN202493430U (en) | 2012-02-01 | 2012-02-01 | Single-screw pump stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200312391U CN202493430U (en) | 2012-02-01 | 2012-02-01 | Single-screw pump stator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202493430U true CN202493430U (en) | 2012-10-17 |
Family
ID=46999662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200312391U Expired - Lifetime CN202493430U (en) | 2012-02-01 | 2012-02-01 | Single-screw pump stator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202493430U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103802255A (en) * | 2014-02-28 | 2014-05-21 | 广东斯坦德流体系统有限公司 | PTFE screw pump stator molding clamp and technology |
| CN104650512A (en) * | 2014-11-28 | 2015-05-27 | 浙江歌瑞新材料有限公司 | Positive displacement motor (PDM) drill stator manufactured by PTFE and PFA blend and fluorine-containing material applying PDM drill stator |
-
2012
- 2012-02-01 CN CN2012200312391U patent/CN202493430U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103802255A (en) * | 2014-02-28 | 2014-05-21 | 广东斯坦德流体系统有限公司 | PTFE screw pump stator molding clamp and technology |
| CN104650512A (en) * | 2014-11-28 | 2015-05-27 | 浙江歌瑞新材料有限公司 | Positive displacement motor (PDM) drill stator manufactured by PTFE and PFA blend and fluorine-containing material applying PDM drill stator |
| CN104650512B (en) * | 2014-11-28 | 2018-01-09 | 浙江歌瑞新材料有限公司 | A kind of screw drilling tool stator made using PTFE and PFA blends and the fluorine material applied to the stator |
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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: 20121017 |
|
| CX01 | Expiry of patent term |