CN211397875U - Sectional combined stator of all-metal conical screw pump - Google Patents
Sectional combined stator of all-metal conical screw pump Download PDFInfo
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- CN211397875U CN211397875U CN201921352735.5U CN201921352735U CN211397875U CN 211397875 U CN211397875 U CN 211397875U CN 201921352735 U CN201921352735 U CN 201921352735U CN 211397875 U CN211397875 U CN 211397875U
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Abstract
The utility model provides a sectional combined stator of an all-metal tapered screw pump and a processing method thereof, which can realize the rapid production of the stator monomer of the all-metal tapered screw pump. The utility model provides an all-metal tapered screw pump's sectional combination formula stator, its includes more than 2 sections stator monomers, its characterized in that: one end of each stator monomer is provided with a positioning groove, the other end of each stator monomer is provided with a positioning bulge, the top end face of the inner cavity profile of each stator monomer penetrates through the positioning bulge and extends to the bottom end face of the positioning groove, the positioning grooves and the positioning bulges at the adjacent end parts of the two sections of stator monomers are spliced with each other, the bottom end faces of the positioning grooves and the top end faces of the positioning bulges are attached to each other, so that the two sections of stator monomers cannot rotate with each other, and the inner cavity profiles of the two sections of stator monomers are overlapped at the spliced part. After splicing, the inner cavity profiles of the stator monomers are continuous and have no fault, and the splicing position has no dislocation, so that the accurate and quick assembly of the stator monomers of the all-metal conical screw pump is realized, and the quick production of the stator is further realized.
Description
Technical Field
The utility model relates to an all-metal screw pump technical field, concretely relates to all-metal conical screw pump's sectional combination formula's stator.
Background
Compared with the traditional all-metal conical screw pump, the all-metal conical screw pump has the following advantages:
1. the all-metal conical screw pump can move the rotor along the axis direction after the stator and the rotor are abraded, so that the gap between the adjusted rotor and the stator is still in the optimal range, the oil pumping pressure of the all-metal conical screw pump is further ensured, the crude oil is pumped out, the higher liquid outlet amount is maintained, and the service life of the all-metal conical screw pump is further effectively prolonged;
2. after the sand card has a power failure, the rotor rotates more laborsavingly and conveniently, and the rotor only needs to be lifted upwards by a certain distance, so that the distance between the external thread curved surface of the conical spiral structure of the rotor and the internal thread curved surface of the conical spiral structure of the stator is increased, and the card is unlocked.
The stator of the all-metal conical screw pump is similar to the stator of the traditional all-metal screw pump in processing, and single-section stator monomers are processed firstly, and then the multiple sections of stator monomers are positioned, spliced and welded. However, the length of the stator unit of the all-metal tapered screw pump is smaller than that of the stator unit of the conventional all-metal tapered screw pump, and is mainly limited by the length of the cutter bar, for the following reasons:
1. the molded surface of the inner cavity of the stator of the traditional all-gold screw pump has no taper, the cutter bar is eccentrically arranged relative to a stator blank in the processing process, the position of the cutter bar is fixed, the stator blank rotates and advances, and an inner hole of the stator blank always has a supporting function on the cutter, the cutter holder and the cutter bar in the processing process, so that the cutter bar can be prevented from vibrating, and the length of a stator monomer is not limited by the length of the cutter bar;
2. the stator of the all-metal tapered screw pump has the advantages that the inner cavity profile of the stator is tapered, the position of the cutter bar in the radial direction is changed from the small end to the large end of the inner cavity profile, or the position of the cutter bar in the radial direction is changed from the large end to the small end in the machining process, an inner hole of a stator blank cannot always support the cutter, the cutter holder and the cutter bar, the length of the cutter bar is not too long to prevent the cutter bar from vibrating and ensure the machining precision, and therefore the length of a stator monomer is limited by the length of the cutter bar, and the length of the stator monomer of the all-metal tapered screw pump is smaller than that of a stator monomer of a traditional.
The length of the stator monomer of the all-metal tapered screw pump is smaller than that of the stator monomer of the traditional all-metal tapered screw pump, so that the times of assembling and positioning the stators with the same length are increased, and how to realize the rapid production of the stator of the all-metal tapered screw pump is a technical problem to be solved urgently in the industry.
SUMMERY OF THE UTILITY MODEL
In view of the above problem, the utility model provides an all-metal tapered screw pump's sectional combination formula's stator, its free fast production of stator that can realize all-metal tapered screw pump.
The utility model provides an all-metal tapered screw pump's sectional combination formula stator, its includes more than 2 sections stator monomers, its characterized in that: the one end of stator monomer is equipped with positioning groove, the other end is equipped with the location arch, the free inner chamber profile of stator certainly protruding top face in location runs through and extends to positioning groove's bottom face, and the positioning groove of the adjacent tip of two sections stator monomers is laminated each other with the location arch and positioning groove's bottom face and the protruding top face in location for can not rotate each other between two sections stator monomers and the free inner chamber profile of two sections stator coincides in concatenation department.
Furthermore, the positioning groove and the positioning protrusion are both waist-shaped and annular structures, and the inner diameter, the outer diameter and the eccentricity of the positioning groove at the adjacent end parts of the two sections of stator monomers are respectively equal to the inner diameter, the outer diameter and the eccentricity of the positioning protrusion.
Furthermore, the bottom end surface of the positioning groove and the top end surface of the positioning protrusion are both flat surfaces and perpendicular to the axis of the stator unit.
Further, the length of the stator unit from the top end surface of the positioning protrusion to the bottom end surface of the positioning groove, or the length of the inner cavity profile of the stator unit along the axial direction is an integral multiple of the lead of the all-metal tapered screw pump.
Further, the projections of the positioning protrusion and the positioning groove along the axial direction of the stator unit coincide.
Furthermore, the end parts of the stator single bodies are respectively provided with an annular welding line.
Further, the stator monomer includes 2 sections tip stator monomers and 1 section above middle stator monomer, and one of them section tip stator monomer is equipped with positioning groove, another section tip stator monomer is equipped with the location arch, middle free one end of stator is equipped with the location arch, the other end is equipped with positioning groove, the free inner chamber profile of tip stator runs through and extends to the terminal surface of the other end from the bellied top face of location/positioning groove's of one end terminal surface, the free inner chamber profile of middle stator runs through and extends to positioning groove's bottom face from the bellied top face of location.
The utility model discloses a stator, after the concatenation, the bellied top face in location of the adjacent tip of two sections stator monomer and positioning groove's bottom face are laminated each other, ensure that each free inner chamber profile of stator is continuous, no fault, and simultaneously, realize the mutual positioning between the stator monomer through the location arch and positioning groove, prevent to rotate and ensure that two sections free inner chamber profiles of stator are in concatenation coincidence, can make the free inner chamber profile of each stator in concatenation department not have the dislocation, ensure that the inner chamber profile after the concatenation is whole accurate, and then avoid using butt joint adjusting device, realize the free accuracy of all-metal tapered screw pump's stator, fast assembly, and then realize the fast production of stator.
Drawings
Fig. 1 is the structure diagram of the single-section end stator unit and the single-section middle stator unit in the non-splicing state of the invention.
Fig. 2 is the utility model discloses a single section tip stator monomer and the single section in the middle of the stator monomer concatenation state's the schematic structure diagram.
Fig. 3 is a partially enlarged structural diagram of a point a in fig. 2.
Fig. 4 is a schematic structural view of the protruding end of the stator unit with positioning protrusion of the present invention.
Fig. 5 is a schematic structural view of the stator unit with one end of the positioning groove of the present invention.
Detailed Description
As shown in figures 1-5, a sectional combined stator of an all-metal conical screw pump comprises more than 2 sections of stator monomers, wherein one end of each stator monomer is provided with a positioning groove, the other end of each stator monomer is provided with a positioning bulge, an inner cavity profile 4 of each stator monomer penetrates through a top end surface 6 of the positioning bulge 3 and extends to a bottom end surface 7 of the positioning groove 2, the positioning grooves 2 and the positioning bulges 3 at the adjacent ends of the two sections of stator monomers are spliced with each other, the bottom end surfaces of the positioning grooves 2 and the top end surfaces of the positioning bulges 3 are attached to each other, so that the two sections of stator monomers cannot rotate with each other, the inner cavity profiles of the two sections of stator monomers are overlapped at the spliced position, specifically, the inner cavity profiles of the two sections of stator monomers are overlapped at the bottom end surfaces 7 of the positioning grooves 2 and the top end surfaces 6 of the positioning bulges 3, as shown in figure 3, the, A gap 8 exists on the end surface of the non-positioning groove-positioning protrusion, and due to the existence of errors, the end surfaces of the positioning groove-positioning protrusion and the end surfaces of the stator monomers on two sides corresponding to the gap 8 are difficult to be simultaneously ensured to be in double positioning fit;
specifically, the stator monomer comprises 2 sections of end stator monomers 1a and more than 1 section of middle stator monomers 1b, wherein one section of end stator monomer 1a is provided with a positioning groove 2, the other section of end stator monomer (not shown) is provided with a positioning protrusion 3, one end of the middle stator monomer is provided with the positioning protrusion 3, the other end is provided with the positioning groove 2, the spliced ends of the end stator monomer 1a and the middle stator monomer 1b are respectively provided with a chamfer, and then an annular welding seam 5 is formed after splicing, the cavity profile of the end stator monomer penetrates through from the top end surface of the positioning protrusion at one end/the bottom end surface of the positioning groove and extends to the end surface of the other end, and the cavity profile of the middle stator monomer penetrates through from the top end surface of the positioning protrusion and extends to the bottom end surface of;
the length D from the top end face of the stator monomer self-positioning bulge 3 to the bottom end face of the positioning groove 2, or the length of the inner cavity profile 4 of the stator monomer along the axial direction is the single lead length of the all-metal conical screw pump, the projections of the positioning bulge 3 and the positioning groove 2 along the axial direction of the stator monomer are overlapped, namely the two are arranged oppositely, in other embodiments, the length of the inner cavity profile 4 of the stator monomer along the axial direction can be other integral multiples or non-integral multiples, the overlapping of the inner cavity profiles of two sections of stator monomers at the splicing position can be ensured only when the non-integral multiples are not required, but the vibration of the cutter bar is intensified along with the increase of the length of the inner cavity profile 4 of the stator monomer, and therefore, the length of the inner cavity.
The positioning groove 2 and the positioning bulge 3 are preferably waist-shaped and annular structures, the inner diameter, the outer diameter and the eccentricity of the positioning groove at the adjacent end parts of the two sections of stator monomers are respectively equal to the inner diameter, the outer diameter and the eccentricity of the positioning bulge, the waist-shaped and annular structures can prevent the two sections of stator monomers from rotating mutually, the processing is convenient, the bottom end surface of the positioning groove 2 and the top end surface of the positioning bulge 3 are planes, and the inner cavity molded surfaces 4 of the assembled stator monomers are ensured to be continuously connected.
Claims (7)
1. The utility model provides an all-metal tapered screw pump's sectional combination formula stator, its includes more than 2 sections stator monomers, its characterized in that: the one end of stator monomer is equipped with positioning groove, the other end is equipped with the location arch, the free inner chamber profile of stator certainly protruding top face in location runs through and extends to positioning groove's bottom face, and the positioning groove of the adjacent tip of two sections stator monomers is laminated each other with the location arch and positioning groove's bottom face and the protruding top face in location for can not rotate each other between two sections stator monomers and the free inner chamber profile of two sections stator coincides in concatenation department.
2. The sectional stator of an all-metal tapered screw pump according to claim 1, wherein the positioning groove and the positioning projection are both of a kidney-shaped and ring-shaped structure, and the inner diameter, the outer diameter and the eccentricity of the positioning groove at the adjacent end portions of the two sections of stator units are respectively equal to the inner diameter, the outer diameter and the eccentricity of the positioning projection.
3. The segmented stator of an all-metal tapered screw pump according to claim 1, wherein the bottom end surface of the positioning groove and the top end surface of the positioning projection are both flat and perpendicular to the axis of the stator unit.
4. The segmented stator of an all-metal tapered screw pump according to claim 1, wherein the length of the stator unit from the top end surface of the positioning projection to the bottom end surface of the positioning groove, or the length of the cavity profile of the stator unit in the axial direction is an integral multiple of the lead of the all-metal tapered screw pump.
5. The segmented stator of an all-metal tapered screw pump according to claim 1, wherein projections of the positioning projections and the positioning grooves in the axial direction of the stator unit coincide.
6. The segmented stator of an all-metal tapered screw pump according to claim 1, wherein the spliced ends of the stator units are respectively provided with an annular weld.
7. The sectional stator of an all-metal tapered screw pump according to claim 1, wherein the stator unit includes 2 sections of end stator units and 1 or more sections of middle stator units, one section of the end stator unit is provided with a positioning groove, the other section of the end stator unit is provided with a positioning protrusion, one end of the middle stator unit is provided with a positioning protrusion, the other end of the middle stator unit is provided with a positioning groove, the cavity profile of the end stator unit penetrates and extends from the top end surface of the positioning protrusion at one end/the bottom end surface of the positioning groove to the end surface of the other end, and the cavity profile of the middle stator unit penetrates and extends from the top end surface of the positioning protrusion to the bottom end surface of the positioning groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921352735.5U CN211397875U (en) | 2019-08-20 | 2019-08-20 | Sectional combined stator of all-metal conical screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921352735.5U CN211397875U (en) | 2019-08-20 | 2019-08-20 | Sectional combined stator of all-metal conical screw pump |
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| Publication Number | Publication Date |
|---|---|
| CN211397875U true CN211397875U (en) | 2020-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921352735.5U Active CN211397875U (en) | 2019-08-20 | 2019-08-20 | Sectional combined stator of all-metal conical screw pump |
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| CN (1) | CN211397875U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439805A (en) * | 2019-08-20 | 2019-11-12 | 无锡恒信北石科技有限公司 | A kind of sectionally assembled stator and its processing method of all-metal conical screw pump |
-
2019
- 2019-08-20 CN CN201921352735.5U patent/CN211397875U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439805A (en) * | 2019-08-20 | 2019-11-12 | 无锡恒信北石科技有限公司 | A kind of sectionally assembled stator and its processing method of all-metal conical screw pump |
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