CN210738905U - Centrifugal pump formed by punching and welding - Google Patents
Centrifugal pump formed by punching and welding Download PDFInfo
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- CN210738905U CN210738905U CN201920591910.XU CN201920591910U CN210738905U CN 210738905 U CN210738905 U CN 210738905U CN 201920591910 U CN201920591910 U CN 201920591910U CN 210738905 U CN210738905 U CN 210738905U
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- impeller
- pump body
- sealing ring
- pump
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Abstract
The utility model discloses a punching-welding formed centrifugal pump, which comprises a pump body, an impeller, an automatic sealing ring, a shaft and a locking piece; the pump body is provided with a cavity, the impeller, the automatic sealing ring, the shaft and the locking part are all positioned in the cavity, the impeller is sleeved on the shaft, and the locking part is connected with one end of the shaft and used for fixing the impeller; the impeller is provided with an impeller opening ring, and the automatic sealing ring is sleeved on the impeller opening ring; the centrifugal pump further comprises a pump body lining, the pump body lining is connected with the inner wall of the cavity, the pump body lining is covered on the end portion of the impeller opening ring, and the automatic sealing ring is limited between the pump body lining and the spigot of the impeller opening ring. The utility model discloses centrifugal pump is at the impeller during operation, and automatic sealing ring is under liquid medium's impact, and along axial slip to pump body inside lining on impeller choma, form the sealed in little clearance in the axial, also form the sealed in little clearance radially with impeller choma, has reduced overall and has let out leakage, the efficiency of improvement pump.
Description
Technical Field
The utility model relates to a centrifugal pump technical field, in particular to impulse welding shaping centrifugal pump.
Background
The centrifugal pump is made up of stainless steel plate through cutting, punching and welding, and features light weight and high surface finish quality. The centrifugal pump formed by punching and welding not only saves energy and materials, but also avoids the casting pollution of the conventional centrifugal pump.
The mouth ring of the centrifugal pump is a place where the pump body and the impeller are combined statically and statically, and a certain gap is formed. If the clearance is too large, a large amount of high-pressure liquid leaks to the inlet of the impeller through the clearance, so that the efficiency of the pump is greatly reduced; if the clearance is too small, the impeller opening ring is easy to collide with the pump wall, and due to poor wear resistance of a casting, the wear failure of the pump wall and the impeller opening ring is easy to cause, and the normal operation and the service life of the pump are influenced.
The common method of the conventional cast pump is that wear-resistant rings are respectively embedded at the joint of the pump wall and the impeller opening ring, the two wear-resistant rings are sealed by a tiny gap, and the wear-resistant rings cannot be embedded in the punching and welding formed centrifugal pump because the pump body and the impeller opening ring have thin walls; in order to avoid the failure caused by the abrasion of the pump body and the impeller, the clearance needs to be designed to be larger, so that the problems of large leakage quantity at the position of the opening ring and low pump efficiency are caused.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is that the leakage rate is big, the problem of inefficiency is leaked to punching and welding shaping centrifugal pump choma department among the prior art.
In order to solve the technical problem, the utility model discloses a punching and welding formed centrifugal pump, which comprises a pump body, an impeller, an automatic sealing ring, a shaft and a locking piece;
the pump body is provided with a cavity, the impeller, the automatic sealing ring, the shaft and the locking piece are all positioned in the cavity, the impeller is sleeved on the shaft, and the locking piece is connected with one end of the shaft and used for fixing the impeller;
the impeller is provided with an impeller opening ring, and the automatic sealing ring is sleeved on the impeller opening ring;
the centrifugal pump still includes pump body inside lining, pump body inside lining is located in the cavity, pump body inside lining with the inner wall of cavity links to each other, pump body inside lining cover is located the tip of impeller choma, automatic sealing ring is spacing in pump body inside lining with between the tang of impeller choma.
Optionally, the pump body has an inlet and an outlet, the inlet and the outlet are respectively communicated with the cavity, and the automatic sealing ring can slide on the impeller opening ring along the axial direction of the inlet.
Optionally, the sliding displacement of the self-sealing ring is about 0.5mm to 5 mm.
Optionally, the outer diameter of the impeller eye is 1mm to 5mm smaller than the inner diameter of the pump body liner.
Optionally, at least part of the rim of the pump body liner is in contact with the impeller eye.
Optionally, the inner diameter of the automatic seal ring is 0.1mm to 0.3mm larger than the outer diameter of the impeller eye.
Optionally, the material of the automatic sealing ring is nitrile rubber or other non-metallic materials.
Optionally, the retaining member is a spindle nose nut.
Adopt above-mentioned technical scheme, impulse welding shaping centrifugal pump have following beneficial effect:
when the impeller of the centrifugal pump works, the automatic sealing ring slides to the inner lining of the pump body along the axial direction on the impeller opening ring under the impact of a liquid medium, is attached to the inner lining of the pump body, and forms the sealing of a small gap in the axial direction, and because the inner diameter of the automatic sealing ring is 0.1-0.3mm larger than the outer diameter of the impeller opening ring, the automatic sealing ring and the impeller opening ring also form the sealing of the small gap in the radial direction, the leakage amount is reduced on the whole, and the efficiency of the pump is improved;
furthermore, the gap between the impeller opening ring of the centrifugal pump and the pump body lining is larger, so that the impeller opening ring is prevented from colliding with the pump body lining when the impeller rotates;
further, when the rotor of the centrifugal pump axially moves, the automatic sealing ring axially slides on the impeller opening ring under the action of the pump body lining, so that sealing is kept, impact is avoided, and the service lives of the impeller and the pump body are prolonged.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a structural diagram of one embodiment of the centrifugal pump formed by punching and welding of the present invention;
the following is a supplementary description of the drawings:
1-inlet, 2-pump body, 3-pump body lining, 4-automatic sealing ring, 5-outlet, 6-impeller, 7-impeller opening ring, 8-shaft and 9-shaft head nut.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
In order to solve the problems of large leakage and low efficiency at the position of a centrifugal pump orifice ring formed by punching and welding in the prior art, the embodiment discloses a centrifugal pump formed by punching and welding. Fig. 1 is a structural diagram of an embodiment of the centrifugal pump formed by press welding of the present invention, as shown in fig. 1, the centrifugal pump formed by press welding comprises a pump body 2, an impeller 6, an automatic sealing ring 4, a shaft 8 and a locking member;
the pump body 2 is provided with a cavity, the impeller 6, the automatic sealing ring 4, the shaft 8 and the locking piece are all positioned in the cavity, the impeller 6 is sleeved on the shaft 8, and the locking piece is connected with one end of the shaft 8 and used for fixing the impeller 6;
the impeller 6 is provided with an impeller opening ring 7, and the automatic sealing ring 4 is sleeved on the impeller opening ring 7;
the centrifugal pump still includes pump body inside lining 3, pump body inside lining 3 is located in the cavity, pump body inside lining 3 with the inner wall of cavity links to each other, pump body inside lining 3 covers and locates the tip of impeller choma 7, automatic sealing ring 4 is spacing in pump body inside lining 3 with between the tang of impeller choma 7.
In some embodiments, the pump body 2 has an inlet 1 and an outlet 5, the inlet 1 and the outlet 5 are respectively communicated with the cavity, and the automatic sealing ring 4 can slide on the impeller opening ring 7 along the axial direction of the inlet 1.
In some embodiments, the sliding displacement of the self-sealing ring 4 is about 0.5mm to 5 mm.
In some embodiments, the pump body liner 3 is housed outside the impeller eye 7, and the outer diameter of the impeller eye 7 is 1mm to 5mm smaller than the inner diameter of the pump body liner 3.
In some embodiments, at least a portion of the rim of the pump body liner 3 is in contact with the impeller eye 7.
In some embodiments, the inner diameter of the automatic seal ring 4 is 0.1mm to 0.3mm larger than the outer diameter of the impeller eye ring 7.
In some embodiments, the automatic sealing ring 4 is made of nitrile rubber or other non-metallic materials.
In some embodiments, the retaining member is a spindle nut 9.
The utility model discloses the centrifugal pump during operation, impeller 6 is rotatory under the drive of axle 8, and the import 1 from the pump of transport medium gets into, and most medium flows out from the export 5 of pump after 6 pressurizations of impeller, and the gap of the small part medium from pump body inside lining 3 and automatic sealing ring 4 to and the gap of automatic sealing ring 4 and impeller choma 7 flows back to the entry of impeller 6. The automatic sealing ring 4 slides to the pump body lining 3 along the axial direction on the impeller opening ring 7 under the impact of a liquid medium, is attached to the pump body lining 3, and forms the sealing of a small gap in the axial direction, and because the inner diameter of the automatic sealing ring 4 is 0.1-0.3mm larger than the outer diameter of the impeller opening ring 7, the automatic sealing ring also forms the sealing of the small gap with the impeller opening ring 7 in the radial direction, the leakage amount is reduced on the whole, and the efficiency of the pump is improved.
Furthermore, the gap between the impeller opening ring 7 of the centrifugal pump and the pump body lining 3 is larger, so that the impeller opening ring 7 is prevented from colliding with the pump body lining 3 when the impeller 6 rotates;
further, when the rotor of the centrifugal pump axially moves, the automatic sealing ring 4 axially slides on the impeller opening ring 7 under the action of the pump body lining 3, so that sealing is kept, impact is avoided, and the service life of the impeller 6 and the pump body 2 is prolonged.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (8)
1. The utility model provides a punching and welding shaping centrifugal pump which characterized in that: comprises a pump body (2), an impeller (6), an automatic sealing ring (4), a shaft (8) and a locking piece;
the pump body (2) is provided with a cavity, the impeller (6), the automatic sealing ring (4), the shaft (8) and the locking piece are all positioned in the cavity, the impeller (6) is sleeved on the shaft (8), and the locking piece is connected with one end of the shaft (8) and used for fixing the impeller (6);
impeller (6) have impeller choma (7), automatic sealing ring (4) cover is located on impeller choma (7), the centrifugal pump still includes pump body inside lining (3), pump body inside lining (3) are located in the cavity, pump body inside lining (3) with the inner wall of cavity links to each other, pump body inside lining (3) cover is located the tip of impeller choma (7), automatic sealing ring (4) are spacing in pump body inside lining (3) with between the tang of impeller choma (7).
2. The impulse-welded centrifugal pump of claim 1, wherein: the pump body (2) is provided with an inlet (1) and an outlet (5), the inlet (1) and the outlet (5) are communicated with the cavity respectively, and the automatic sealing ring (4) can slide on the impeller opening ring (7) along the axial direction of the inlet (1).
3. The impulse-welded centrifugal pump of claim 2, wherein: the sliding displacement of the automatic sealing ring (4) is about 0.5mm-5 mm.
4. The impulse-welded centrifugal pump of claim 1, wherein: the outer diameter of the impeller opening ring (7) is 1-5 mm smaller than the inner diameter of the pump body lining (3).
5. The impulse-welded centrifugal pump of claim 4, wherein: at least part of the edge of the pump body lining (3) is in contact with the impeller opening ring (7).
6. The impulse-welded centrifugal pump of claim 1, wherein: the inner diameter of the automatic sealing ring (4) is 0.1-0.3mm larger than the outer diameter of the impeller opening ring (7).
7. The impulse-welded centrifugal pump according to any one of claims 1 to 6, wherein: the automatic sealing ring (4) is made of nitrile rubber or other non-metallic materials.
8. The impulse-welded centrifugal pump of claim 1, wherein: the locking piece is a shaft head nut (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920591910.XU CN210738905U (en) | 2019-04-28 | 2019-04-28 | Centrifugal pump formed by punching and welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920591910.XU CN210738905U (en) | 2019-04-28 | 2019-04-28 | Centrifugal pump formed by punching and welding |
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| Publication Number | Publication Date |
|---|---|
| CN210738905U true CN210738905U (en) | 2020-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920591910.XU Active CN210738905U (en) | 2019-04-28 | 2019-04-28 | Centrifugal pump formed by punching and welding |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005632A (en) * | 2019-04-28 | 2019-07-12 | 江苏大学镇江流体工程装备技术研究院 | A kind of punching is welded into type centrifugal pump |
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2019
- 2019-04-28 CN CN201920591910.XU patent/CN210738905U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005632A (en) * | 2019-04-28 | 2019-07-12 | 江苏大学镇江流体工程装备技术研究院 | A kind of punching is welded into type centrifugal pump |
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