CN109236642B - Metal screw pump stator forming process - Google Patents
Metal screw pump stator forming process Download PDFInfo
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- CN109236642B CN109236642B CN201811415813.1A CN201811415813A CN109236642B CN 109236642 B CN109236642 B CN 109236642B CN 201811415813 A CN201811415813 A CN 201811415813A CN 109236642 B CN109236642 B CN 109236642B
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- stator
- screw pump
- sheets
- mandrel
- metal
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- 238000000034 method Methods 0.000 title claims abstract description 53
- 230000008569 process Effects 0.000 title claims abstract description 48
- 239000002184 metal Substances 0.000 title claims abstract description 29
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 29
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 claims abstract description 13
- 238000003825 pressing Methods 0.000 claims abstract description 9
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 6
- 238000011056 performance test Methods 0.000 claims description 6
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 229910052755 nonmetal Inorganic materials 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 238000003754 machining Methods 0.000 abstract description 8
- 238000012545 processing Methods 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000002347 injection Methods 0.000 abstract description 2
- 239000007924 injection Substances 0.000 abstract description 2
- 230000008901 benefit Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2230/00—Manufacture
- F04C2230/20—Manufacture essentially without removing material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2230/00—Manufacture
- F04C2230/60—Assembly methods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2230/00—Manufacture
- F04C2230/90—Improving properties of machine parts
- F04C2230/91—Coating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2230/00—Manufacture
- F04C2230/90—Improving properties of machine parts
- F04C2230/92—Surface treatment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/10—Stators
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The invention provides a metal screw pump stator forming process, and relates to the field of oil exploitation and water injection equipment manufacturing. The technical problems of high processing precision requirement and high processing cost of the screw pump stator in the prior art are solved. The screw pump stator forming process comprises the following steps: s1: adopting a punch forming process and utilizing a stamping die to manufacture a plurality of stator sheets; s2: and sequentially stringing a plurality of stator sheets on a mandrel of the screw pump, and pressing the stator sheets strung on the mandrel into a whole by using a pressure mechanism. The forming process is used for enabling a common punch press and a simple station tool to complete the punch forming of the stator sheet manufactured by the metal screw pump stator. The requirements of the screw pump stator forming process on the machining precision and the economic cost saving are reduced.
Description
Technical Field
The invention relates to the field of oil exploitation and water injection equipment manufacturing, in particular to a metal screw pump stator forming process.
Background
The positive displacement pump is a pump for conveying a liquid by using a change in the internal volume of a pump cylinder, and the positive displacement pump alternately increases and decreases the working volume by reciprocating or rotating a working element in the pump cylinder to suck and discharge the liquid, and includes piston pumps, plunger pumps, gear pumps, diaphragm pumps, screw pumps, and the like. The screw pump is a displacement pump for sucking and conveying water body by means of the change of the volume of the pump cavity when the screw rod rotates, and comprises a single screw rod, a double screw rod, a multi-screw rod and the like, and is simple in structure, small in size, easy to assemble and disassemble, reliable in work and good in self-sucking performance. The ordinary screw pump stator is usually made of rubber, and the performance is poor; compared with the common screw pump, the stator and the rotor of the metal screw pump are made of metal materials, have no swelling problem, excellent temperature resistance and small starting torque, are ideal updated products of the common screw pump, and are manufactured by a numerical control machining center or a splicing molding process after electric spark segmented machining in the current common machining method.
The inventor finds that the prior art has at least the following technical problems:
1. the molded line of the inner cavity of the stator is complex, the structure is slender, and the processing is extremely difficult.
2. The machining precision is difficult to meet the requirements of drawings, the manufacturing is time-consuming and labor-consuming, and the machining cost is high.
3. The screw pump stator is complex to install and is limited by the length of the stator.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The invention aims to provide a metal screw pump stator forming process, which solves the technical problems of high machining precision requirement and high machining cost of a screw pump stator in the prior art. The various technical effects that can be produced by the preferred technical solution of the present invention are described in detail below.
In order to achieve the purpose, the invention provides a metal screw pump stator forming process, which comprises the following steps:
s1: adopting a punch forming process and utilizing a stamping die to manufacture a plurality of stator sheets;
s2: sequentially stringing a plurality of stator sheets on a mandrel of the screw pump, and pressing the stator sheets strung on the mandrel into a whole by using a pressure mechanism; and after the pump head and the accessory parts of the screw pump are installed, performing performance test, after the performance test is passed, disassembling and assembling the screw pump, and then performing internal coating on each part of the screw pump and then assembling again.
In a preferred or optional embodiment, the process further comprises: and carrying out fastening and anti-loosening process treatment on the plurality of stator sheets before press-fitting and forming.
In a preferred or alternative embodiment, the fastening and anti-loosening process treatment includes coating an epoxy resin on the surface of the stator piece.
In a preferred or optional embodiment, the fastening and anti-loosening process includes an anti-rotation key groove fastening and anti-loosening process, a key groove is formed in the stator sheet, and the stamped stator and the rotor are in anti-rotation connection in a key connection mode.
In a preferred or optional embodiment, the process further comprises: and installing the plurality of stator sheets and the mandrel which are subjected to fastening and anti-loosening treatment in the screw pump shell, and then installing the pump head and the accessory parts of the screw pump.
In a preferred or alternative embodiment, said step of sequentially stringing a plurality of said stator pieces on a mandrel of said progressive cavity pump, and said step of press-fitting a plurality of said stator pieces strung on said mandrel into a unit using a press mechanism further comprises: and the pressure mechanism compresses two ends of the stator sheets according to a preset tonnage, and presses the mandrel and the stator sheets into a shell of the screw pump after the stator sheets are fixed, wherein the pressure mechanism is a press machine.
In a preferred or optional embodiment, the process further comprises: and after the screw pump is assembled and molded again, coating the whole outside.
In a preferred or alternative embodiment, the stator plates in S1 are made of metal and/or nonmetal mixed materials.
Based on the technical scheme, the embodiment of the invention can at least produce the following technical effects:
the invention utilizes the stamping die to manufacture a plurality of stator sheets, the stator sheets have low public benefit precision and easy processing compared with the whole stator forming process, and the stator sheets can be manufactured by stamping the stator sheets by the metal screw pump stator by using a common punch and a simple station tool without adopting a special machine tool and a numerical control machine tool for processing, thereby greatly reducing the manufacturing cost compared with the traditional metal stator forming process. And sequentially stringing a plurality of stator sheets on a mandrel of the screw pump, pressing the stator sheets strung on the mandrel into a whole by using a pressure mechanism, and then putting the whole into a shell.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIGS. 1 and 2 are axial and radial cross-sectional views of a cavity of a stator of a screw pump;
FIG. 3 is a schematic view of a screw pump stator coupled to a rotor;
in the figure:
1. a stator; 2. and a rotor.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
The mandrel is a mechanical part for connecting rotating parts, and is used for connecting parts in the current mechanical field, and comprises a standard mandrel and other mandrels. The standard dabber includes linkage segment, rotation section and canned paragraph, and wherein, the linkage segment is connected to the one end of rotation section, and the canned paragraph is connected to the other end, and the convenience is to the blocking and firm of other parts, prevents that the dabber when rotating, and the part from droing, makes things convenient for fixed connection spare and change. The invention belongs to the prior art and can be applied to a screw pump.
Referring to fig. 1 and 2, the principle of the metal screw pump stator forming process of the present invention is shown in the figure, wherein any radial section pattern of the screw pump stator 1 is composed of two circular arcs with radius of R and center distance of 2e, and the axial direction is spiral line shape with lead of L, thin metal sheets with the same cross section with the stator cavity are overlapped together according to the spiral line shape with lead of L, so that an all-metal stator cavity is formed, and when the thickness of the sheet is delta → 0, the cavity of the stroke approaches to the theoretical cavity infinitely. On the basis of the principle, the stator is manufactured by adopting a mode of overlapping a plurality of layers of stator sheets, wherein the steps are as follows
S1: adopting a punch forming process and utilizing a stamping die to manufacture a plurality of stator sheets;
s2: and sequentially stringing a plurality of stator sheets on a mandrel of the screw pump, pressing the stator sheets strung on the mandrel into a whole by using a pressure mechanism, and then loading the stator sheets into a shell of the screw pump after molding. The process method is different from the traditional manufacturing process, utilizes the structural characteristics of the cavity of the screw pump stator, adopts a multilayer overlapping mode for molding, is not limited by the length of the stator, and has the production efficiency which is several times that of the traditional process. Compared with the whole stator forming process, the stator sheet has the advantages that the required precision for manufacturing is relatively low, the stator sheet is easy to machine, a special machine tool and a numerical control machine tool are not needed for machining, the stator sheet manufactured by the metal screw pump stator can be punched and formed by using a common punch press and a simple station tool, the manufacturing cost is reduced, and the stator sheet can be installed in a shell after being pressed and formed.
As an alternative embodiment, before the press-fitting molding, a fastening and anti-loosening process is performed on the plurality of stator pieces, for example, epoxy resin fastening materials are coated on the plurality of adjacent stator pieces, the epoxy resin increases the toughness, impact resistance and hardness of the stator pieces, and the shear strength performance of the cured stator pieces can be improved; or as shown in fig. 3, an anti-rotation key groove fastening and anti-loosening process is adopted, a key groove is formed in the stator sheet, the width of the key groove meets the design requirement, and the stamped stator and the rotor are in anti-rotation connection in a key connection mode; or other fastening and anti-loosening processes.
In an alternative embodiment, the plurality of stator pieces and the mandrel after the anti-loose fastening treatment are installed in the screw pump housing, and then the pump head of the screw pump and the accessories thereof are installed.
As an alternative embodiment, the step of sequentially stringing a plurality of the stator pieces on a mandrel of the progressive cavity pump, and the step of pressing the stator pieces strung on the mandrel into a whole using a pressing mechanism further comprises: and the pressure mechanism compresses two ends of the stator sheets according to a preset tonnage, and presses the mandrel and the stator sheets into a shell of the screw pump after the stator sheets are fixed, wherein the pressure mechanism is a press machine. The press machine can be a punch press or a hydraulic press, the press machine is used for punching a plurality of stator sheets into a whole according to preset tonnage, then the mandrel and the formed stator sheets are pressed into the shell of the screw pump, and then the mandrel is drawn out. The press forming is a processing and forming method for obtaining a workpiece with a required shape and size by applying an external force to a plate, a strip, a pipe, a section bar and the like by a press machine and a die to cause plastic deformation or separation. The method has the advantages that the quality stability and consistency of the formed stator sheets are ensured; secondly, the material utilization rate is high, and the method belongs to less and chipless processing; thirdly, efficient, convenient operation, the workman's that requires technical grade is not high.
As an optional implementation mode, after the pump head of the screw pump and the accessory parts thereof are installed, a performance test is carried out, and the quality requirement of the screw pump is ensured. And after the performance test is passed, the screw pump is disassembled and assembled, and all parts of the screw pump are coated inside and then assembled again. The internal coating has the functions of protecting metal from being corroded by media such as light, rain, water and the like, prolonging the service life of the screw pump and enabling the surface of a part to have the functions of fire prevention, pollution prevention and the like.
Further, after the screw pump is assembled again, the whole of the outside is coated.
In an alternative embodiment, the stator sheet in S1 is made of a mixture of metal and nonmetal, or a mixture of two or more different metals, or others. The alloy can improve the performance of the material, such as high temperature resistance, stamping resistance, corrosion resistance and the like, improve the service efficiency of the screw pump and prolong the service life of the screw pump.
A non-metal screw pump stator forming process comprises the above partial or all metal screw pump stator forming process; the non-metallic material is a stamping-resistant non-metallic or non-metallic and metal mixed material
The metal screw pump stator forming process provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the core concepts of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the invention without departing from the inventive concept, and those improvements and modifications are also within the scope of the invention as defined in the appended claims.
Claims (8)
1. A metal screw pump stator forming process is characterized by comprising the following steps:
s1: adopting a punch forming process and utilizing a stamping die to manufacture a plurality of stator sheets;
s2: sequentially stringing a plurality of stator sheets on a mandrel of the screw pump, and pressing the stator sheets strung on the mandrel into a whole by using a pressure mechanism;
the process further comprises: and after the pump head and the accessory parts of the screw pump are installed, performing performance test, after the performance test is passed, disassembling and assembling the screw pump, and then performing internal coating on each part of the screw pump and then assembling again.
2. The process for forming a stator for a metal screw pump according to claim 1, wherein said process further comprises: and carrying out fastening and anti-loosening process treatment on the plurality of stator sheets before press-fitting and forming.
3. The metal screw pump stator molding process of claim 2, wherein the fastening anti-loosening process treatment includes coating an epoxy resin on the surface of the stator piece.
4. The metal screw pump stator molding process of claim 2, wherein the fastening and anti-loosening process comprises an anti-rotation key groove fastening and anti-loosening process, the key groove is formed in the stator sheet, and the punched stator is connected with the rotor key.
5. A process for forming a stator for a metal screw pump according to any one of claims 2 to 4, wherein the process further comprises: and installing the plurality of stator sheets and the mandrel which are subjected to fastening and anti-loosening treatment in the screw pump shell, and then installing the pump head and the accessory parts of the screw pump.
6. The process for forming a stator of a metal screw pump according to claim 5, wherein the step of sequentially stringing the plurality of stator pieces on a mandrel of the screw pump and pressing the stator pieces strung on the mandrel into a unit using a pressing mechanism further comprises:
and the pressure mechanism compresses two ends of the stator sheets according to a preset tonnage, and presses the mandrel and the stator sheets into a shell of the screw pump after the stator sheets are fixed, wherein the pressure mechanism is a press machine.
7. The process for forming a stator for a metal screw pump according to claim 6, further comprising: and after the screw pump is assembled and molded again, coating the whole outside.
8. The process of claim 1, wherein the stator pieces in S1 are made of metal and/or non-metal mixed material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811415813.1A CN109236642B (en) | 2018-11-26 | 2018-11-26 | Metal screw pump stator forming process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811415813.1A CN109236642B (en) | 2018-11-26 | 2018-11-26 | Metal screw pump stator forming process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109236642A CN109236642A (en) | 2019-01-18 |
| CN109236642B true CN109236642B (en) | 2020-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811415813.1A Active CN109236642B (en) | 2018-11-26 | 2018-11-26 | Metal screw pump stator forming process |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865129A (en) * | 2010-05-19 | 2010-10-20 | 锦州鹏宇泵业有限公司 | Processing method of screw pump stator with equal wall thickness and special push-pull device |
| CN202900649U (en) * | 2012-11-09 | 2013-04-24 | 无锡世联丰禾石化装备科技有限公司 | Stator of screw pump |
| CN104508955A (en) * | 2012-03-14 | 2015-04-08 | 金勒+施皮斯有限公司 | Laminate stack and method of manufacturing the same |
| CN107127251A (en) * | 2017-05-18 | 2017-09-05 | 安徽飞翔电器有限公司 | A kind of stator piece and rotor sheet stacking method |
| CN107649570A (en) * | 2017-10-29 | 2018-02-02 | 德清振达电气有限公司 | A kind of stamping die device of motor stator slice |
| CN207664828U (en) * | 2017-12-28 | 2018-07-27 | 郑州德盛祥电机制造有限公司 | motor stator pressing device |
-
2018
- 2018-11-26 CN CN201811415813.1A patent/CN109236642B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865129A (en) * | 2010-05-19 | 2010-10-20 | 锦州鹏宇泵业有限公司 | Processing method of screw pump stator with equal wall thickness and special push-pull device |
| CN104508955A (en) * | 2012-03-14 | 2015-04-08 | 金勒+施皮斯有限公司 | Laminate stack and method of manufacturing the same |
| CN202900649U (en) * | 2012-11-09 | 2013-04-24 | 无锡世联丰禾石化装备科技有限公司 | Stator of screw pump |
| CN107127251A (en) * | 2017-05-18 | 2017-09-05 | 安徽飞翔电器有限公司 | A kind of stator piece and rotor sheet stacking method |
| CN107649570A (en) * | 2017-10-29 | 2018-02-02 | 德清振达电气有限公司 | A kind of stamping die device of motor stator slice |
| CN207664828U (en) * | 2017-12-28 | 2018-07-27 | 郑州德盛祥电机制造有限公司 | motor stator pressing device |
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| Publication number | Publication date |
|---|---|
| CN109236642A (en) | 2019-01-18 |
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Denomination of invention: Forming technology of metal screw pump stator Effective date of registration: 20220211 Granted publication date: 20200324 Pledgee: Dongying Bank Co.,Ltd. Yanshan Road sub branch Pledgor: SHANDONG ZEYUAN PETROLEUM MACHINERY Co.,Ltd. Registration number: Y2022980001487 |
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Date of cancellation: 20230804 Granted publication date: 20200324 Pledgee: Dongying Bank Co.,Ltd. Yanshan Road sub branch Pledgor: SHANDONG ZEYUAN PETROLEUM MACHINERY Co.,Ltd. Registration number: Y2022980001487 |
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Denomination of invention: Forming process of metal screw pump stator Effective date of registration: 20230815 Granted publication date: 20200324 Pledgee: Dongying Bank Co.,Ltd. Yanshan Road sub branch Pledgor: SHANDONG ZEYUAN PETROLEUM MACHINERY Co.,Ltd. Registration number: Y2023980052306 |