CN103302805B - A kind of screw pump stator with equal wall thickness and production technology thereof - Google Patents
A kind of screw pump stator with equal wall thickness and production technology thereof Download PDFInfo
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- CN103302805B CN103302805B CN201310275014.XA CN201310275014A CN103302805B CN 103302805 B CN103302805 B CN 103302805B CN 201310275014 A CN201310275014 A CN 201310275014A CN 103302805 B CN103302805 B CN 103302805B
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- steel pipe
- pipe body
- wall thickness
- screw pump
- pump stator
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Abstract
The invention discloses a kind of screw pump stator with equal wall thickness, ecto-entad comprises steel pipe body successively, plastic layer and rubber layer, described steel pipe body internal surface and the outer surface of plastic layer bond and both are concentric arranges, the inner helical surface of described plastic layer and the male helicoid of rubber layer bond, also disclose a kind of screw pump stator with equal wall thickness production technology, above-mentioned three-decker is obtained mainly through twice injection molding, not only reduce the production cost of screw pump stator with equal wall thickness, and improve machining accuracy, thoroughly solve the technical barrier that processing length and machining accuracy in prior art are limited.
Description
Technical field
The present invention relates to rubber product technical field, especially relate to a kind of screw pump stator with equal wall thickness and production technology thereof.
Background technology
Screw pump is a kind of rotary volume pump, can be used for carrying liquid, and solid-liquid mixture, is widely used in the industries such as oil-gas mining, food, chemical industry, and the rotor primarily of stator and conjugation with it formed.Facts have proved that the screw pump Performance comparision of employing same wall-thickness stator is superior, current Canadian weatherford company have developed a kind of equal-wall-thickness stator screw pump, same wall-thickness stator refers to that the wall thickness of the rubber layer of stator is equal, as shown in Figure 1, it is made up of double-layer structure: with steel pipe layer 1 and the rubber layer such as wall thickness such as grade 2 of spiral inner chamber.Its production technology be first by casting or Milling Process with the steel pipe of spiral inner chamber, then rubber is pressed in the space between lining core and steel pipe, but need the core manufactured with helicoid when adopting the method for casting, this processes precision is not high, technological equipment is expensive, and restricted to stator length, be generally less than 2m, cost of manufacture is very high.If employing milling process, special screw milling machine and inner helical surface Processing CAM software must be used, it is reported, whole equipment needs nearly ten million yuan, and whole manufacturing process system rigidity is low, processing length and machining accuracy are all restricted, and can not be widely applied.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of screw pump stator with equal wall thickness and production technology thereof, not only reduce the production cost of screw pump stator with equal wall thickness, and improve machining accuracy, thoroughly solve the technical barrier that processing length and machining accuracy in prior art are limited.
For solving the problems of the technologies described above, a kind of technical scheme of the present invention is: a kind of screw pump stator with equal wall thickness, ecto-entad comprises steel pipe body, plastic layer and rubber layer successively, described steel pipe body internal surface and the outer surface of plastic layer bond and both are concentric arranges, and the inner helical surface of described plastic layer and the male helicoid of rubber layer bond.
For solving the problems of the technologies described above, another kind of technical scheme of the present invention is: a kind of production technology of screw pump stator with equal wall thickness, comprises the following steps:
S1, by one location floor installation on an end of described steel pipe body, first lining core is inserted steel pipe body interior, and one end of described first lining core is fixedly installed in the locating hole of described positioning base, the other end of steel pipe body is installed a gland, described gland is connected with injection machine discharging opening with described steel pipe body respectively, with upper-part assembling formation first assembly, it is T that described first assembly is put into temperature
1heating furnace in, be T from described injection machine discharging opening press-in temperature
1plastics, T
1be 200 ~ 250 DEG C, pressurize, after about 10-30 minute, takes out cooling;
S2, described gland is pulled down after cooling, first lining core is slowly screwed out, remove the clout on both sides, obtain the assembly of steel pipe body and plastic layer, second lining core is inserted steel pipe body interior, and one end of described second lining core is fixedly installed in the locating hole of described positioning base, the external diameter of the second lining core is less than the first lining core, described gland is installed on the other end of described steel pipe body, described gland is connected with rubber mill discharging opening with described steel pipe body respectively, with upper-part assembling formation second assembly, it is T that described second assembly is put into temperature
2heating furnace in, be T from described rubber mill discharging opening press-in temperature
2rubber, T
2be 140 ~ 170 DEG C, pressurize, after about 10-30 minute, takes out cooling,
After S3, cooling, the second lining core is screwed out, remove clout, described screw pump stator with equal wall thickness can be obtained.
Preferably, described temperature T
1compare T
2high.
Preferably, described temperature T
2compare T
1high about 100 DEG C.
Have employed technique scheme, beneficial effect of the present invention is: the present invention not only reduces the production cost of screw pump stator with equal wall thickness, and improve machining accuracy, in addition, the present invention does not need to make the steel pipe with spiral inner chamber, can process screw pump stator with equal wall thickness, and can produce more than 6m overlength stator, thoroughly solve the technical barrier that processing length and machining accuracy in prior art are limited, easy to utilize.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art mean wall thickness screw pump stator;
Fig. 2 is the structural representation of three-decker screw pump stator with equal wall thickness of the present invention;
Fig. 3 is three-decker screw pump stator with equal wall thickness of the present invention first time injection moulding installation diagram;
Fig. 4 is three-decker screw pump stator with equal wall thickness of the present invention second time injection moulding installation diagram;
Wherein: 1. with the steel pipe in internal and external screw face, 2. rubber bushing such as wall thickness such as grade, 3. steel pipe body, 4. plastic layer, 5. rubber layer such as wall thickness such as grade, 6. positioning base, 7. the first lining core, 8. the second lining core, 9. gland, 10. injection machine discharging opening; 11. HTHP plastics; 12, rubber mill discharging opening; 13, rubber.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described.
As shown in Figure 2, a kind of screw pump stator with equal wall thickness, ecto-entad comprises steel pipe body 3, plastic layer 4 and rubber layer 5 successively, and steel pipe body 3 inner surface and the outer surface of plastic layer 4 bond and both are concentric arranges, and the inner helical surface of plastic layer 4 and the male helicoid of rubber layer 5 bond.Steel pipe body 3 is common steel-tube construction.
As Fig. 3 and Fig. 4 jointly shown in, a kind of production technology of screw pump stator with equal wall thickness, comprises the following steps:
S1, a positioning base 6 is installed on an end of steel pipe body 3, first lining core 7 is inserted steel pipe body 3 inner, and one end of the first lining core 7 is fixedly installed in the locating hole of positioning base 6, the other end of steel pipe body 3 is installed a gland 9, gland 9 is connected with injection machine discharging opening 10 with steel pipe body 3 respectively, with upper-part assembling formation first assembly, the first assembly being put into temperature is T
1heating furnace in, being pressed into temperature from injection machine discharging opening 10 is T
1hTHP plastics 11, T
1be 200 ~ 250 DEG C, pressurize, after about 10-30 minute, takes out cooling;
Gland 9 is pulled down after S2, cooling, first lining core 7 is slowly screwed out, remove the clout on both sides, obtain the assembly of steel pipe body 3 and plastic layer 4, second lining core 8 is inserted steel pipe body 3 inner, and one end of the second lining core 8 is fixedly installed in the locating hole of positioning base 6, the external diameter of the second lining core 8 is less than the first lining core 7, gland 9 is installed on the other end of steel pipe body 3, gland 9 is connected with rubber mill discharging opening 12 with steel pipe body 3 respectively, with upper-part assembling formation second assembly, the second assembly being put into temperature is T
2heating furnace in, being pressed into temperature from rubber mill discharging opening 12 is T
2rubber 13, T
2be 140 ~ 170 DEG C, pressurize, after about 10-30 minute, takes out cooling, temperature T
2compare T
1high about 100 DEG C;
After S3, cooling, the second lining core 8 is screwed out, remove clout, described screw pump stator with equal wall thickness can be obtained.
The present invention not only reduces the production cost of screw pump stator with equal wall thickness, and improve machining accuracy, in addition, the present invention does not need to make the steel pipe with spiral inner chamber, screw pump stator with equal wall thickness can be processed, and more than 6m overlength stator can be produced, and thoroughly solve the technical barrier that processing length and machining accuracy in prior art are limited, easy to utilize.
The present invention is not limited to above-mentioned concrete embodiment, and those of ordinary skill in the art is from above-mentioned design, and without performing creative labour, done all conversion, all drop within protection scope of the present invention.
Claims (3)
1. a production technology for screw pump stator with equal wall thickness, is characterized in that, comprises the following steps:
S1, by one location floor installation on an end of the steel pipe body of described screw pump stator with equal wall thickness, first lining core is inserted steel pipe body interior, and one end of described first lining core is fixedly installed in the locating hole of described positioning base, the other end of steel pipe body is installed a gland, described gland is connected with injection machine discharging opening with described steel pipe body respectively, with upper-part assembling formation first assembly, it is T that described first assembly is put into temperature
1holding furnace in, be T from described injection machine discharging opening press-in temperature
1plastics, T
1be 200 ~ 250 DEG C, pressurize, after 10-30 minute, takes out cooling;
S2, described gland is pulled down after cooling, first lining core is slowly screwed out, remove the clout on both sides, obtain the assembly of steel pipe body and plastic layer, second lining core is inserted steel pipe body interior, and one end of described second lining core is fixedly installed in the locating hole of described positioning base, the external diameter of the second lining core is less than the first lining core, described gland is installed on the other end of described steel pipe body, described gland is connected with rubber mill discharging opening with described steel pipe body respectively, with upper-part assembling formation second assembly, it is T that described second assembly is put into temperature
2holding furnace in, be rubber from described rubber mill discharging opening press-in temperature, T
2be 140 ~ 170 DEG C, pressurize, after 10-30 minute, takes out cooling,
After S3, cooling, the second lining core is screwed out, remove clout, described screw pump stator with equal wall thickness can be obtained.
2. the production technology of a kind of screw pump stator with equal wall thickness as claimed in claim 1, is characterized in that, described temperature T
1compare T
2high.
3. the production technology of a kind of screw pump stator with equal wall thickness as claimed in claim 2, is characterized in that, described temperature T
2compare T
1high about 100 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310275014.XA CN103302805B (en) | 2013-06-29 | 2013-06-29 | A kind of screw pump stator with equal wall thickness and production technology thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310275014.XA CN103302805B (en) | 2013-06-29 | 2013-06-29 | A kind of screw pump stator with equal wall thickness and production technology thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103302805A CN103302805A (en) | 2013-09-18 |
| CN103302805B true CN103302805B (en) | 2015-11-25 |
Family
ID=49128733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310275014.XA Expired - Fee Related CN103302805B (en) | 2013-06-29 | 2013-06-29 | A kind of screw pump stator with equal wall thickness and production technology thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103302805B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113263297B (en) * | 2021-05-29 | 2022-03-08 | 唐山津丰泓泵业股份有限公司 | Novel screw pump screw sleeve processing technology |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4942008A (en) * | 1985-07-10 | 1990-07-17 | Cahill John W | Process for molding a multiple layer structure |
| CN1978180A (en) * | 2005-12-07 | 2007-06-13 | 上海华向橡胶制品有限公司 | Method for forming screw-rod rubber lining pump rubber-lining stator |
| CN101025157A (en) * | 2006-02-22 | 2007-08-29 | 于宝奎 | Screw-pump and screw motor stator |
| CN102629796A (en) * | 2012-03-26 | 2012-08-08 | 西南石油大学 | Pipe fitting inner high-pressure forming equal-wall thickness screw motor and processing process thereof |
-
2013
- 2013-06-29 CN CN201310275014.XA patent/CN103302805B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4942008A (en) * | 1985-07-10 | 1990-07-17 | Cahill John W | Process for molding a multiple layer structure |
| CN1978180A (en) * | 2005-12-07 | 2007-06-13 | 上海华向橡胶制品有限公司 | Method for forming screw-rod rubber lining pump rubber-lining stator |
| CN101025157A (en) * | 2006-02-22 | 2007-08-29 | 于宝奎 | Screw-pump and screw motor stator |
| CN102629796A (en) * | 2012-03-26 | 2012-08-08 | 西南石油大学 | Pipe fitting inner high-pressure forming equal-wall thickness screw motor and processing process thereof |
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| Publication number | Publication date |
|---|---|
| CN103302805A (en) | 2013-09-18 |
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Granted publication date: 20151125 Termination date: 20160629 |