CN210178639U - Built-in submersible pump - Google Patents
Built-in submersible pump Download PDFInfo
- Publication number
- CN210178639U CN210178639U CN201921059368.XU CN201921059368U CN210178639U CN 210178639 U CN210178639 U CN 210178639U CN 201921059368 U CN201921059368 U CN 201921059368U CN 210178639 U CN210178639 U CN 210178639U
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- China
- Prior art keywords
- annular
- annular oil
- rotating shaft
- oil seal
- submersible pump
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- Expired - Fee Related
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Abstract
The utility model provides an internal submersible pump belongs to mechanical technical field. The built-in submersible pump comprises a shell, a motor and an impeller, wherein the motor and the impeller are arranged in the shell, the motor comprises a rotating shaft and a cylindrical end cover fixedly connected with the shell, the lower end of the rotating shaft penetrates through the end cover and is connected with the impeller, the rotating shaft is rotatably connected with the end cover through a bearing, a supporting cylinder is sleeved outside the lower end of the end cover and is hermetically and fixedly connected with the end cover, the lower end of the supporting cylinder is bent inwards to form an annular supporting part, an annular retaining shoulder for supporting the bearing is integrally formed on the inner side wall of the end cover, and the annular retaining shoulder is positioned; the rotating shaft is sleeved and fixed with a first annular oil seal and a second annular oil seal, the inner walls of the first annular oil seal and the second annular oil seal are attached to the outer wall of the rotating shaft, the first annular oil seal and the second annular oil seal are distributed on the upper side and the lower side of the supporting portion respectively, and the upper ends of the first annular oil seal and the second annular oil seal are pressed on the annular retaining shoulder and the supporting portion respectively to form sealing. The built-in submersible pump has the advantage of long service life of the annular oil seal.
Description
Technical Field
The utility model belongs to the technical field of machinery, a water pump, especially an internal type immersible pump are related to.
Background
The submersible pump is one of water pumps, and a motor drives an impeller to rotate, so that water is pumped in from an inlet and discharged from an outlet to finish the water pumping work. The motor of the submersible pump has good sealing performance with the outside, so that the submersible pump can be completely immersed in water to work.
The built-in engineering submersible pump is a branch of submersible pumps with superior performance, and is widely applied to many fields of water conservancy engineering, underground engineering, mine drainage, capital construction engineering, water supply and drainage of water tanks of water towers and the like.
The existing submersible pump is a built-in engineering submersible pump as disclosed in the Chinese patent library (application number: 201721282407.3, including a casing and a pump casing, wherein the casing is provided with a motor cavity and a drainage cavity surrounding the outer wall of the motor cavity, the motor cavity is provided with a motor, the two ends of the casing are respectively provided with a drainage inlet and a drainage outlet communicated with the drainage cavity, the pump casing is provided with an impeller, a rotating shaft is arranged between the motor and the impeller, the pump casing is provided with a suction inlet for water intake and a discharge outlet for drainage, the discharge outlet is singly communicated with the drainage inlet, the motor drives the impeller to rotate through the rotating shaft to realize water pumping, the rotating shaft comprises a water inlet section positioned in the pump casing and a drying section positioned in the casing, the water inlet section is made of stainless steel, the drying section is made of common carbon steel, the water inlet section and the drying section are welded and fixed through friction welding, a sealing element is arranged in the casing, and is sleeved on the outer wall of the water inlet section and close to the drying section, the seal is used to isolate the interior space of the pump casing from the interior space of the casing.
In practical use, the sealing element generally adopts an annular oil seal, and two end faces of the annular oil seal respectively abut against the front end cover of the motor and the inner wall of the shell to realize two sealing. However, the above-described structure has a problem: because both ends of the sealing element are in a compression state, the pretightening force applied to the sealing element is large, the abrasion speed of the sealing element is increased, and the service life of the sealing element is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at having the above-mentioned problem to current technique, provided an interior built-in immersible pump, the technical problem of solution is how to prolong annular oil blanket life-span.
The purpose of the utility model can be realized by the following technical proposal: a built-in submersible pump comprises a shell, a motor and an impeller, wherein the motor and the impeller are arranged in the shell, the motor comprises a rotating shaft and a cylindrical end cover fixedly connected with the shell, the lower end of the rotating shaft penetrates through the end cover and is connected with the impeller, and the rotating shaft is rotatably connected with the end cover through a bearing; the pivot overcoat establish and be fixed with annular oil blanket one and annular oil blanket two, and the inner wall of annular oil blanket one and annular oil blanket two all pastes with the outer wall of pivot and lean on, annular oil blanket one distributes respectively at the upside and the downside of supporting part with annular oil blanket two, and the upper end of annular oil blanket one and annular oil blanket two sticiss respectively on annular fender shoulder and supporting part and form sealedly.
Set up annular oil blanket one and annular oil blanket two in the pivot to form twice in the pivot axial and seal, under the prerequisite of guaranteeing to form reliable seal between pivot and the end cover, make annular oil blanket one again keep off the shoulder and annular oil blanket two and the supporting part between all only form the single face sealed, thereby effectively reduce annular oil blanket one and the pretightning force that annular oil blanket two received, reduce the wearing and tearing of annular oil blanket one and annular oil blanket two, thereby prolong the life-span of annular oil blanket one and annular oil blanket two.
In the built-in submersible pump, the outer side wall of the end cover is provided with an annular groove, the annular groove and the end cover are coaxially arranged, the annular groove is internally provided with a sealing ring, and the outer side wall of the sealing ring is abutted to the supporting cylinder. Under the effect of the sealing ring, the sealing effect formed between the end cover and the supporting cylinder is effectively enhanced.
In the built-in submersible pump, the support cylinder is fixedly connected with the end cover in a welding mode.
In foretell built-in immersible pump, the annular keep off the inner wall of shoulder and be equipped with annular step, and annular step comprises annular step wall and annular step face, the upper end of annular oil blanket one be located annular step, the lateral wall of annular oil blanket one offsets with foretell annular step wall, and has in the pivot and make the last up end of annular oil blanket one sticis the extruded article on annular step face.
In foretell built-in immersible pump, the outer wall of pivot on seted up jump ring groove one, the extruded article including install the first jump ring in jump ring groove one and be located first jump ring and annular oil seal first between the gasket, first gasket cover is outside the pivot, and the both ends face of first gasket offsets with annular oil seal one and first jump ring respectively.
As another scheme, in the above built-in submersible pump, the extrusion part is an annular shoulder integrally formed on the outer side wall of the rotating shaft, and the lower end face of the annular oil seal is pressed against the annular shoulder.
In the built-in submersible pump, the rotating shaft is sleeved and fixed with the second gasket, and two end faces of the annular oil seal II are respectively and tightly abutted against the supporting part and the second gasket.
In the above built-in submersible pump, the outer wall of the rotating shaft is further provided with a clamp spring groove II, a second clamp spring is installed in the clamp spring groove II, and the lower end of the second gasket is tightly pressed on the second clamp spring.
Compared with the prior art, this built-in immersible pump sets up annular oil blanket one and annular oil blanket two in the pivot to form twice in the pivot axial and seal, under the prerequisite of guaranteeing to form reliable seal between pivot and the end cover, make annular oil blanket one again and annular keep off the shoulder and annular oil blanket two and all only form the single face between the supporting part and seal, thereby effectively reduce the pretightning force that annular oil blanket one and annular oil blanket two received, reduce the wearing and tearing of annular oil blanket one and annular oil blanket two, thereby prolong the life-span of annular oil blanket one and annular oil blanket two.
Drawings
Fig. 1 is a schematic view of the structure of the present built-in submersible pump.
Fig. 2 is an enlarged schematic view of a structure at a in fig. 1.
In the figure, 1, a housing; 2. a motor; 2a, a rotating shaft; 2b, end covers; 2b1, annular shoulder; 2b2, annular step; 2b2a, annular step wall; 2b2b, annular step surface; 3. an impeller; 4. a bearing; 5. a support cylinder; 5a, a support part; 6. a seal ring; 7. a first annular oil seal; 8. a second annular oil seal; 9. a first clamp spring; 10. a first gasket; 11. a second gasket; 12. and a second clamp spring.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
As shown in fig. 1, the built-in submersible pump includes a housing 1, and a motor 2 and an impeller 3 both disposed in the housing 1. The motor 2 comprises a rotating shaft 2a and a cylindrical end cover 2b fixedly connected with the shell 1, the lower end of the rotating shaft 2a penetrates through the end cover 2b and is connected with the impeller 3, and the rotating shaft 2a is rotatably connected with the end cover 2b through a bearing 4.
Specifically, as shown in fig. 1 and 2, a support cylinder 5 is sleeved outside the lower end of the end cover 2b, and the support cylinder 5 and the end cover 2b are hermetically and fixedly connected. In this embodiment, the support cylinder 5 and the end cap 2b are hermetically and fixedly connected by welding. Further, an annular groove is formed in the outer side wall of the end cover 2b, the annular groove and the end cover 2b are coaxially arranged, a sealing ring 6 is arranged in the annular groove, and the outer side wall of the sealing ring 6 abuts against the supporting cylinder 5 so as to enhance the sealing effect formed between the end cover 2b and the supporting cylinder 5.
As shown in fig. 2, the lower end of the support cylinder 5 is bent inward to form a support portion 5a in a ring shape, and the support portion 5a and the support cylinder 5 are coaxially arranged. An annular shoulder 2b1 for supporting the bearing 4 is integrally formed on the inner side wall of the end cap 2b, i.e. the lower end of the outer end of the bearing 4 is pressed against the annular shoulder 2b 1. The annular shoulder 2b1 and the end cap 2b are coaxially arranged, and the annular shoulder 2b1 is located between the support cylinder 5 and the bearing 4. The rotating shaft 2a is sleeved and fixed with a first annular oil seal 7 and a second annular oil seal 8, and the inner walls of the first annular oil seal 7 and the second annular oil seal 8 are attached to the outer wall of the rotating shaft 2 a. The annular first oil seal 7 and the annular second oil seal 8 are respectively distributed on the upper side and the lower side of the supporting part 5a, and the upper ends of the annular first oil seal 7 and the annular second oil seal 8 are respectively pressed on the annular retaining shoulder 2b1 and the supporting part 5a to form sealing. Set up annular oil blanket one 7 and annular oil blanket two 8 on pivot 2a to form twice in pivot 2a axial and seal, under the prerequisite of guaranteeing to form reliable seal between pivot 2a and the end cover 2b, make annular oil blanket one 7 and annular keep off shoulder 2b1 and annular oil blanket two 8 and supporting part 5a between all only form single face seal again, thereby effectively reduce the pretightning force that annular oil blanket one 7 and annular oil blanket two 8 received, reduce the wearing and tearing of annular oil blanket one 7 and annular oil blanket two 8, thereby prolong the life-span of annular oil blanket one 7 and annular oil blanket two 8.
The positioning mode of the annular oil seal I7 is as follows: the inner wall of the annular shoulder 2b1 is provided with an annular step 2b2, and the annular step 2b2 is composed of an annular step wall 2b2a and an annular step surface 2b2 b. The upper end of the annular oil seal 7 is positioned in the annular step 2b2, the outer side wall of the annular oil seal 7 is abutted against the annular step wall 2b2a, and the rotating shaft 2a is provided with a pressing piece which enables the upper end face of the annular oil seal 7 to be tightly pressed on the annular step face 2b2 b. In this embodiment, jump ring groove one has been seted up on the outer wall of pivot 2a, and the extruded article is including installing first jump ring 9 in jump ring groove one and being located first jump ring 9 and the annular oil seal first gasket 10 between 7, and first gasket 10 cover is outside pivot 2a, and the both ends face of first gasket 10 offsets with annular oil seal first 7 and first jump ring 9 respectively.
The annular oil seal II 8 is positioned as follows: the second gasket 11 is established and is fixed with to pivot 2a overcoat, and the both ends face of two annular oil blanket 8 closely supports with supporting part 5a and second gasket 11 respectively and leans on, has still seted up jump ring groove two on the outer wall of pivot 2a, installs second jump ring 12 in the jump ring groove two, and the lower extreme of second gasket 11 sticiss on second jump ring 12.
Example two
The second embodiment is basically the same as the first embodiment in structure and principle, and the difference lies in: the extrusion piece is an annular convex shoulder which is integrally formed on the outer side wall of the rotating shaft 2a, and the lower end face of the annular oil seal 7 is pressed against the annular convex shoulder.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (8)
1. An internal submersible pump comprises a shell (1), and a motor (2) and an impeller (3) which are both arranged in the shell (1), wherein the motor (2) comprises a rotating shaft (2a) and a cylindrical end cover (2b) which is fixedly connected with the shell (1), the lower end of the rotating shaft (2a) penetrates through the end cover (2b) and is connected with the impeller (3), and the rotating shaft (2a) is rotationally connected with the end cover (2b) through a bearing (4), it is characterized in that a supporting cylinder (5) is sleeved outside the lower end of the end cover (2b), the supporting cylinder (5) is fixedly connected with the end cover (2b) in a sealing way, the lower end of the supporting cylinder (5) is bent inwards to form an annular supporting part (5a), the inner side wall of the end cover (2b) is integrally formed with an annular retaining shoulder (2b1) for supporting the bearing (4), and the annular blocking shoulder (2b1) is positioned between the support cylinder (5) and the bearing (4); the pivot (2a) overcoat establish and be fixed with annular oil blanket one (7) and annular oil blanket two (8), and the inner wall of annular oil blanket one (7) and annular oil blanket two (8) all pastes with the outer wall of pivot (2a) and leans on, annular oil blanket one (7) and annular oil blanket two (8) distribute respectively in the upside and the downside of supporting part (5a), and the upper end of annular oil blanket one (7) and annular oil blanket two (8) sticiss respectively on annular fender shoulder (2b1) and supporting part (5a) and form sealedly.
2. The built-in submersible pump according to claim 1, wherein the outer side wall of the end cap (2b) is provided with an annular groove, the annular groove and the end cap (2b) are coaxially arranged, a sealing ring (6) is arranged in the annular groove, and the outer side wall of the sealing ring (6) abuts against the support cylinder (5).
3. The built-in submersible pump according to claim 2, wherein the support cylinder (5) is fixedly connected to the end cap (2b) by welding.
4. The built-in submersible pump according to claim 1, 2 or 3, wherein the annular retaining shoulder (2b1) is provided with an annular step (2b2) on the inner wall thereof, the annular step (2b2) is composed of an annular step wall (2b2a) and an annular step surface (2b2b), the upper end of the annular oil seal (7) is positioned in the annular step (2b2), the outer side wall of the annular oil seal (7) abuts against the annular step wall (2b2a), and the rotating shaft (2a) is provided with a pressing member for pressing the upper end surface of the annular oil seal (7) against the annular step surface (2b2 b).
5. The built-in submersible pump according to claim 4, wherein the outer wall of the rotating shaft (2a) is provided with a first snap spring groove, the extrusion part comprises a first snap spring (9) arranged in the first snap spring groove and a first gasket (10) arranged between the first snap spring (9) and the first annular oil seal (7), the first gasket (10) is sleeved outside the rotating shaft (2a), and two end faces of the first gasket (10) are respectively abutted against the first annular oil seal (7) and the first snap spring (9).
6. The built-in submersible pump according to claim 4, characterized in that the extrusion is an annular shoulder which is integrally formed on the outer side wall of the rotating shaft (2a), and the lower end face of the annular oil seal (7) is pressed against the annular shoulder.
7. The built-in submersible pump according to claim 1, 2 or 3, wherein the second gasket (11) is sleeved and fixed on the rotating shaft (2a), and two end faces of the annular oil seal (8) are respectively and tightly abutted against the support part (5a) and the second gasket (11).
8. The built-in submersible pump according to claim 7, wherein the outer wall of the rotating shaft (2a) is further provided with a second clamp spring groove, a second clamp spring (12) is installed in the second clamp spring groove, and the lower end of the second gasket (11) is tightly pressed on the second clamp spring (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921059368.XU CN210178639U (en) | 2019-07-08 | 2019-07-08 | Built-in submersible pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921059368.XU CN210178639U (en) | 2019-07-08 | 2019-07-08 | Built-in submersible pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210178639U true CN210178639U (en) | 2020-03-24 |
Family
ID=69840245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921059368.XU Expired - Fee Related CN210178639U (en) | 2019-07-08 | 2019-07-08 | Built-in submersible pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210178639U (en) |
-
2019
- 2019-07-08 CN CN201921059368.XU patent/CN210178639U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200324 |