CN217107468U - Improved self-priming return guide vane for centrifugal pump - Google Patents
Improved self-priming return guide vane for centrifugal pump Download PDFInfo
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- CN217107468U CN217107468U CN202221037903.3U CN202221037903U CN217107468U CN 217107468 U CN217107468 U CN 217107468U CN 202221037903 U CN202221037903 U CN 202221037903U CN 217107468 U CN217107468 U CN 217107468U
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- movable plug
- hole
- wall
- guide vane
- centrifugal pump
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 230000037452 priming Effects 0.000 claims abstract description 6
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 28
- 238000004891 communication Methods 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 241001391944 Commicarpus scandens Species 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 210000003205 muscle Anatomy 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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Abstract
The utility model relates to a modified is from inhaling formula return guide vane for centrifugal pump belongs to from inhaling formula centrifugal pump spare part field, and the problem to adopts technical scheme as follows: an improved self priming centrifugal pump return guide vane comprising: the backflow guide vane main body comprises a ring wall and a front wall which enclose a containing cavity, a communication hole communicated with a water inlet of the pump body is formed in the front wall, and a backflow hole for supplying water to backflow is formed in the ring wall; the hollow cavity is positioned on the inner side of the annular wall and surrounds the return hole, and the hollow cavity is communicated with the accommodating cavity through the flow guide hole; the movable plug is movably arranged in the hollow cavity through a spring, a gap is formed between the side wall of the movable plug and the inner wall of the hollow cavity, and the movable plug is a soft plug or a sealing ring is arranged at one end, facing the diversion hole, of the movable plug. The movable plug and the hollow cavity body form a self-absorption structure, and the design is reasonable and stable; the soft movable plug is utilized or the sealing ring is arranged, so that better sealing is formed, noise is reduced, the position of the internal and external communication of the backflow guide vane is lifted, and a better self-absorption effect is ensured.
Description
Technical Field
The utility model belongs to from inhaling formula centrifugal pump spare part field, in particular to return guide vane for modified self-priming centrifugal pump.
Background
The existing self-suction centrifugal pump firstly pours water into the pump body before starting, the guide vane is driven to rotate by the motor, the poured water is accelerated from the water inlet and then conveyed to the water outlet to form negative pressure in the backflow guide vane and at the water inlet, and then the water outside the water inlet is sucked into the pump body, so that the pumping efficiency is high. Generally, a self-priming centrifugal pump is provided with a return guide vane having a return hole, the return guide vane is located between a water inlet of the pump body and an impeller, and the return hole is provided with a self-priming structure so as to generate a self-priming effect. The self-absorption structure comprises a copper piece arranged outside a backflow hole and a bolt connected with the copper piece, the bolt penetrates through a guide folding edge inside a backflow guide vane, a return spring is arranged between the guide folding edge and the backflow guide vane, when a pump body is in a non-working state, the copper piece is far away from the backflow hole by the aid of the return spring, and the backflow hole is kept smooth; when the pump body is in a working state, the copper piece plugs the backflow hole or shields the backflow hole under the action of backflow water and/or negative pressure to seal the backflow hole, so that the backflow guide vane is separated from the inside and the outside. The hole diameter of the hole arranged on the guide folding edge is smaller than that of the backflow hole, the bolt is suspended in the backflow hole, when the water pump is repeatedly started and stopped, the bolt is easily clamped at the hole of the guide folding edge and cannot freely move, so that good sealing cannot be formed between the copper piece and the backflow guide vane, and the bolt is also easily deformed or even broken, so that the self-suction structure is not ideal in self-suction effect and short in service life; in addition, the copper part collides with the return guide vane to generate a click sound when in action, and the noise is large.
SUMMERY OF THE UTILITY MODEL
To current backward flow stator from the unreasonable problem that leads to from the unsatisfactory and big noise of effect of inhaling of structure, the utility model provides a modified is from inhaling backward flow stator for centrifugal pump from inhaling places wherein activity stopper in through setting up the cavity in, overcomes prior art problem.
The utility model adopts the technical scheme as follows: an improved self priming centrifugal pump return guide vane comprising:
the backflow guide vane main body comprises a ring wall and a front wall which enclose a containing cavity, a communicating hole communicated with a water inlet of the pump body is formed in the front wall, and a backflow hole for backflow water is formed in the ring wall;
the hollow cavity is positioned on the inner side of the annular wall and surrounds the return hole, the hollow cavity is communicated with the accommodating cavity through a flow guide hole, and the flow guide hole is opposite to the return hole;
the movable plug is movably arranged in the hollow cavity through a spring, a gap is formed between the side wall of the movable plug and the inner wall of the hollow cavity, so that water can flow through the gap, and the movable plug is a soft plug or a sealing ring is arranged at one end of the movable plug, which faces the flow guide hole;
when the electric pump is in a non-working state, the movable plug leaves the flow guide hole under the action of the spring, so that the backflow guide vane main body is communicated inside and outside; when the electric pump is started, negative pressure is generated in the backflow guide vane to force water in the pump body to flow back from the backflow hole, and the movable plug is filled in the flow guide hole under the action of backflow water and/or negative pressure to separate the backflow guide vane main body from the inside and the outside.
The movable plug replaces a plug pin type structure, the moving direction of the movable plug is limited through the inner wall of the hollow cavity, the problem that the plug pin is easy to break is solved, and the structural design is reasonable and stable; by utilizing a soft movable plug or arranging a sealing ring, better sealing is formed and noise is reduced, so that better self-suction effect is ensured, and the self-suction centrifugal pump obtains ideal lift; the hollow cavity is communicated with the containing cavity only through the flow guide hole, and the position of the backflow guide vane, which is communicated with the inside and the outside, is lifted, so that the backflow guide vane is closer to a negative pressure source (the position where negative pressure is generated), and the self-suction effect can be further improved.
Further, the surface of activity stopper is equipped with the boss that a plurality of intervals set up, forms the runner of water between the two adjacent bosses to when guaranteeing that the activity stopper leaves water conservancy diversion hole, cavity can communicate with each other with holding the chamber, water can conveniently flow with certain flow, the outer fringe of boss with the chamber wall clearance of cavity sets up, both can guarantee that the activity stopper steadily removes, can prevent again that the activity stopper from blocking in the inner wall of cavity.
Furthermore, a step surface is arranged on the boss, a flange surrounding the return hole is arranged in the hollow cavity, one end of the spring is arranged at the step surface, and the other end of the spring is arranged on the flange. The spring can conveniently joint on step face and flange, forms reliable swing joint between activity stopper and flange.
Furthermore, one side of the flange, which faces the movable plug, is provided with an annular groove, and the annular groove is used for abutting against the end part of the movable plug or the sealing ring. The annular groove plays a role in guiding, and the end part of the movable plug is guided to be filled in the guide hole, so that a better sealing effect is formed.
Furthermore, an end cover with a hollow structure is arranged at the position of the return hole, and the end cover is fixedly connected to the annular wall and used for limiting the movable plug so as to prevent the movable plug from falling out of the hollow cavity under the action of a spring. When the movable plug leaves the diversion hole, the hollow structure forms an open structure, and water at the position of the return hole can enter the hollow cavity through the hollow structure.
Further, the end cover encloses the connecting piece that becomes regional intermediate position including inlaying the protruding edge of establishing in the backflow hole and being located protruding edge, protruding edge with even have the protruding muscle that a plurality of intervals set up between the connecting piece, protruding edge, connecting piece and protruding muscle form hollow out construction. The clearance position of activity stopper and the cavity of well middle part body can with hollow out position adaptation of hollow out construction to water can flow smoothly, reduces and hinders.
Furthermore, the activity stopper orientation the one end of end cover sets up the elastic washer, set up domaticly on the protruding muscle, be used for blockking the elastic washer, and then spacing activity stopper, the elastic washer forms crashproof structure between activity stopper and end cover, reduces the noise that the activity stopper produced when removing.
Further, the convex edge is connected with a convex edge, and the convex edge is connected to the outer side of the annular wall.
Further, a support rib is connected between the annular wall and the front wall to improve the strength of the return guide vane main body.
Furthermore, the hollow cavity, the annular wall and the front wall are integrally formed, the structure is convenient to form, good in overall performance, strong in impact resistance and reasonable in manufacturing cost.
The utility model discloses beneficial effect who has: according to the improved backflow guide vane for the self-priming centrifugal pump, the movable plug is adopted, and the moving direction of the movable plug is limited through the inner wall of the hollow cavity, so that the problem that a plug pin is easy to break in the prior art is solved, and the structural design is reasonable and stable; by utilizing the soft movable plug or arranging the sealing ring, better sealing is formed and noise is reduced when the movable plug fills the flow guide hole, so that better self-suction effect is ensured, and the self-suction centrifugal pump obtains ideal lift; the hollow cavity is communicated with the accommodating cavity only through the flow guide hole, so that the position of the internal and external communication of the backflow guide vane is closer to a negative pressure source (the position where negative pressure is generated), and the self-suction effect is further improved.
Drawings
FIG. 1 is a schematic structural diagram of the outer side of a return guide vane for an improved self-priming centrifugal pump;
FIG. 2 is a schematic structural diagram of the inner side of a return guide vane for the improved self-priming centrifugal pump;
FIG. 3 is a schematic sectional view of a return guide vane for the improved self-priming centrifugal pump;
FIG. 4 is a schematic structural diagram of a hollow cavity;
FIG. 5 is a schematic structural view of the movable plug;
FIG. 6 is a schematic structural view of an end cap;
in the figure: 1-a circumferential wall; 11-a reflow hole; 2-front wall; 21-a communicating hole; 3-a hollow cavity; 31-diversion holes; 32-a flange; 321-an annular groove; 4-a movable plug; 41-boss; 411-step surface; 5-a spring; 6-sealing ring; 7-end cap; 71-convex edge; 72-a connector; 73-convex ribs; 731-slope; 74-a flange; 8-a resilient washer; 9-support rib.
Detailed Description
The technical solutions of the embodiments of the present invention are explained and illustrated below with reference to the drawings of the present invention, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the embodiment, those skilled in the art can obtain other embodiments without making creative efforts, which all belong to the protection scope of the present invention.
The improved self-priming centrifugal pump return guide vane of the present embodiment, as shown in fig. 1, 2 and 3, includes:
the backflow guide vane main body comprises a ring wall 1 and a front wall 2 which are enclosed to form an accommodating cavity, a communication hole 21 communicated with a water inlet of the pump body is formed in the front wall 2, and a backflow hole 11 for supplying water to backflow is formed in the ring wall 1;
the hollow cavity 3 is positioned on the inner side of the annular wall 1 and surrounds the reflux hole 11, the hollow cavity 3 is communicated with the accommodating cavity through a guide hole 31, and the guide hole 31 is opposite to the reflux hole 11;
the movable plug 4 is movably arranged in the hollow cavity 3 through a spring 5, a gap is formed between the side wall of the movable plug 4 and the inner wall of the hollow cavity 3, so that water can flow through the gap, and the movable plug 4 is a soft plug or a sealing ring 6 is arranged at one end, facing the diversion hole 31, of the movable plug 4;
when the electric pump is in a non-working state, the movable plug 4 leaves the diversion hole 31 under the action of the spring 5, so that the backflow guide vane main body is communicated inside and outside; when the electric pump is started, negative pressure is generated in the backflow guide vane to force water in the pump body to flow back from the backflow hole 11, and the movable plug 4 is filled in the flow guide hole 31 under the action of backflow water and/or negative pressure to separate the inside and the outside of the backflow guide vane main body.
The movable plug 4 capable of moving replaces a plug type structure, the moving direction of the movable plug 4 is limited through the inner wall of the hollow cavity 3, the problem that the plug is easy to break is solved, and the structure design is reasonable and stable; by utilizing the soft movable plug 3 or arranging the sealing ring 6, better sealing is formed and noise is reduced, so that better self-suction effect is ensured, and the self-suction centrifugal pump obtains ideal lift; the hollow cavity 3 is communicated with the accommodating cavity only through the flow guide hole 31, and the position of the backflow guide vane, which is communicated with the inside and the outside, is lifted, so that the backflow guide vane is closer to a negative pressure source (the position where negative pressure is generated), and the self-suction effect is further improved.
As shown in fig. 5, the outer surface of the movable plug 4 is provided with a plurality of bosses 41 arranged at intervals, a water flow channel is formed between two adjacent bosses 41, so as to ensure that water can flow conveniently at a certain flow rate when the movable plug 4 leaves the diversion hole 31 and the hollow cavity 3 can be communicated with the containing cavity, and the outer edge of the boss 41 is arranged in the gap between the cavity walls of the hollow cavity 3, so that the movable plug 4 can be ensured to move stably, and the movable plug 4 can be prevented from being clamped in the inner wall of the hollow cavity 3.
As shown in fig. 4, a step surface 411 is arranged on the boss 41, a flange 32 surrounding the backflow hole 11 is arranged in the hollow cavity 3, one end of the spring 5 is arranged at the step surface 411, and the other end of the spring is arranged on the flange 32. The spring 5 can be conveniently clamped on the step surface 411 and the flange 32, and a reliable movable connection is formed between the movable plug 4 and the flange 32.
As shown in fig. 3, the flange 32 has an annular groove 321 on a side facing the movable plug 4, and the annular groove 321 is used for abutting against an end of the movable plug 4 or the sealing ring 6. The annular groove 321 plays a guiding role, and the end of the movable plug 4 is guided to be plugged at the diversion hole 31, so as to form a better sealing effect.
As shown in fig. 6, an end cover 7 with a hollow structure is arranged at the position of the backflow hole 11, and the end cover 7 is fixedly connected to the annular wall 1 and used for limiting the movable plug 4, so as to prevent the movable plug 4 from coming out of the hollow cavity 3 under the action of the spring 5. When the movable plug 4 leaves the diversion hole 31, the hollow structure forms an open structure, and water at the position of the backflow hole 11 can enter the hollow cavity 3 through the hollow structure.
As shown in fig. 6, the end cap 7 includes a protruding edge 71 embedded in the backflow hole 11 and a connecting member 72 located at a middle position of an area surrounded by the protruding edge 71, a plurality of ribs 73 arranged at intervals are connected between the protruding edge 71 and the connecting member 72, and the protruding edge 71, the connecting member 72 and the ribs 73 form the hollow structure. The clearance position of activity stopper 4 and the cavity body 3 can with hollow out construction's fretwork position adaptation to water can flow smoothly, reduces and hinders. During the use, activity stopper 4 leaves water conservancy diversion hole 31 after with end cover 7 butt under the effect of spring 5, end cover 7 is on the stroke of activity stopper 4, to activity stopper 4 limiting displacement.
As shown in fig. 5, an elastic washer 8 is disposed at one end of the movable plug 4 facing the end cover 7, as shown in fig. 6, a slope 731 is disposed on the rib 73 for blocking the elastic washer 8, so as to limit the movable plug 4, and the elastic washer 8 forms an anti-collision structure between the movable plug 4 and the end cover 7, thereby reducing noise generated when the movable plug 4 moves.
The flange 71 is connected with a flange 74, and the flange 74 is connected with the outer side of the ring wall 1. In this embodiment, the convex edge 74 is a circular arc and is welded to the outer surface of the annular wall 1.
And a support rib 9 is connected between the annular wall 1 and the front wall 2 to improve the strength of the return guide vane main body.
As shown in fig. 4, the hollow cavity 3, the annular wall 1 and the front wall 2 are integrally formed, and the structure is convenient to form, good in overall performance, strong in impact resistance and reasonable in manufacturing cost.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.
Claims (10)
1. An improved self priming centrifugal pump return guide vane comprising:
the backflow guide vane main body comprises a ring wall and a front wall which enclose a containing cavity, a communicating hole communicated with a water inlet of the pump body is formed in the front wall, and a backflow hole for backflow water is formed in the ring wall; it is characterized in that the preparation method is characterized in that,
the hollow cavity is positioned on the inner side of the annular wall and surrounds the return hole, the hollow cavity is communicated with the accommodating cavity through a flow guide hole, and the flow guide hole is opposite to the return hole;
the movable plug is movably arranged in the hollow cavity through a spring, the side wall of the movable plug is arranged in the gap of the inner wall of the hollow cavity, and the movable plug is a soft plug or faces towards one end of the flow guide hole and is provided with a sealing ring.
2. The improved self-priming centrifugal pump return guide vane according to claim 1, wherein a plurality of bosses are arranged at intervals on the outer surface of the movable plug, a water flow channel is formed between two adjacent bosses, and the outer edges of the bosses are arranged in a gap with the wall of the hollow cavity.
3. The improved self-priming centrifugal pump return guide vane according to claim 2, wherein a step surface is arranged on the boss, a flange surrounding the return hole is arranged in the hollow cavity, one end of the spring is arranged at the step surface, and the other end of the spring is arranged on the flange.
4. The improved self-priming centrifugal pump return guide vane of claim 3, wherein one side of the flange facing the movable plug is provided with an annular groove, and the annular groove is used for abutting against the end part of the movable plug or the sealing ring.
5. The improved self-priming centrifugal pump return guide vane of claim 1, wherein an end cover with a hollowed structure is disposed at the return hole, and the end cover is fixedly connected to the ring wall to limit the movable plug.
6. The improved self-priming centrifugal pump return guide vane of claim 5, wherein the end cap comprises a convex edge embedded in the return hole and a connecting piece located at the middle position of the area enclosed by the convex edge, a plurality of ribs arranged at intervals are connected between the convex edge and the connecting piece, and the convex edge, the connecting piece and the ribs form the hollow structure.
7. The improved self-priming centrifugal pump return guide vane of claim 6, wherein an elastic gasket is arranged at one end of the movable plug facing the end cover, and a slope is arranged on the convex rib for blocking the elastic gasket.
8. The improved self priming centrifugal pump return vane of claim 6 wherein said ledge is connected to a rim, said rim being connected to the outside of said annular wall.
9. The improved self priming centrifugal pump return vane of claim 1 wherein a brace bar is connected between said annular wall and said front wall.
10. The improved self priming centrifugal pump return vane of claim 1 wherein said hollow cavity, said ring wall and said front wall are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221037903.3U CN217107468U (en) | 2022-04-28 | 2022-04-28 | Improved self-priming return guide vane for centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221037903.3U CN217107468U (en) | 2022-04-28 | 2022-04-28 | Improved self-priming return guide vane for centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217107468U true CN217107468U (en) | 2022-08-02 |
Family
ID=82585532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221037903.3U Active CN217107468U (en) | 2022-04-28 | 2022-04-28 | Improved self-priming return guide vane for centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217107468U (en) |
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2022
- 2022-04-28 CN CN202221037903.3U patent/CN217107468U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240510 Address after: Room 02, Building 02, No. 1128 Nanci 1st Road, Anhui Xinwu Economic Development Zone, Wanzhou District, Wuhu City, Anhui Province, 242500 Patentee after: Poluodun Intelligent Pump Industry (Anhui) Co.,Ltd. Country or region after: China Address before: 317500 Room 401, building 2, Chuangye building, 1333 Wanchang Middle Road, Chengdong street, Taizhou City, Zhejiang Province Patentee before: PRODN INTELLIGENT CONTROL ELECTRONIC TECHNOLOGY (ZHEJIANG) CO.,LTD. Country or region before: China |
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| TR01 | Transfer of patent right |