CN211423018U

CN211423018U - Submersible pump

Info

Publication number: CN211423018U
Application number: CN202020055743.XU
Authority: CN
Inventors: 袁小忠
Original assignee: Zhejiang Linou Electromechanical Co ltd
Current assignee: Zhejiang Linou Electromechanical Co ltd
Priority date: 2020-01-10
Filing date: 2020-01-10
Publication date: 2020-09-04
Anticipated expiration: 2030-01-10

Abstract

The utility model provides a submersible pump belongs to mechanical technical field. It has solved the not good problem of current submersible pump job stabilization nature. This immersible pump includes the pump case, locate pivot in the pump case and cover a plurality of stator outside the pivot, all be equipped with the impeller between every stator and the pivot, and impeller and pivot link firmly, the impeller is including being annular connecting portion, the stator is including the base of cover outside connecting portion, and form between base and the connecting portion and be annular runner, integrated into one piece has the lug that is the bar on the outer wall of connecting portion, lug length is along pivot axial extension, and the runner is all stretched out at the lug both ends, the lug has a plurality ofly and follows pivot circumference equipartition, the transversal arc of personally submitting of lug, form the transversal recess of personally submitting arc between the two adjacent lugs, and pass through the circular arc transition between lug arc wall and the recess inner wall. The submersible pump has good working stability.

Description

Submersible pump

Technical Field

The utility model belongs to the technical field of machinery, a immersible pump is related to.

Background

The submersible pump is an important device for pumping water from a deep well, when in use, the whole unit is submerged into water to work, and the underground water is pumped to the ground surface, so that the submersible pump is used for domestic water, mine emergency rescue, industrial cooling, farmland irrigation, seawater lifting and ship load regulation, and can also be used for fountain landscape.

The existing submersible pump generally comprises a pump shell, a rotating shaft arranged in the pump shell and a plurality of guide vanes sleeved outside the rotating shaft. The guide vanes are axially distributed along the rotating shaft, an impeller is arranged between each guide vane and the rotating shaft, the impeller is sleeved outside the rotating shaft, and the impeller is fixedly connected with the rotating shaft; an annular flow passage is formed between the impeller and the guide vane.

Because some silt can be mixed inevitably in the fluid during actual operation, silt gathers and can block up it in being the annular runner, influences the normal work of immersible pump.

SUMMERY OF THE UTILITY MODEL

The utility model aims at having the above-mentioned problem to current technique, provided a immersible pump, the technical problem of solution is how to improve job stabilization nature.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a submersible pump, includes the pump case, locates pivot and the cover in the pump case and all is equipped with the impeller between every stator and the pivot at a plurality of stator outside the pivot, and impeller and pivot link firmly, and the impeller is including being annular connecting portion, and the stator is including the cover base outside connecting portion, and forms between base and the connecting portion to be annular runner, its characterized in that, the outer wall of connecting portion on integrated into one piece have the lug that is the bar, lug length is along pivot axial extension, and the runner is all stretched out at the lug both ends, the lug has a plurality ofly and along pivot circumference equipartition, the lug transversal personally submit arc, form transversal convex recess of personally submitting between the two adjacent lugs, and pass through the circular arc between lug arc wall and the recess inner wall.

The convex blocks and the grooves are alternately distributed, so that the surface of the impeller is concave-convex alternately, and under the high-speed rotation of the impeller, silt collected in the flow channel can be squeezed into the grooves by the convex blocks and is quickly discharged outside, so that the flow channel is effectively prevented from being blocked by the silt, the working stability of the submersible pump is improved, and the service life of the submersible pump is prolonged.

In foretell immersible pump, the base including be annular pedestal and set firmly in the pedestal and be the annular guide pin bushing of circle, the guide pin bushing cover is outside connecting portion, and forms foretell runner between guide pin bushing and the connecting portion, foretell guide pin bushing possesses the rigidity and is made by metal material, guide pin bushing lateral wall and pedestal inside wall in close contact with form sealedly. The rigid guide sleeve made of metal material and the connecting part form a flow channel, so that the wear speed of the guide sleeve can be effectively delayed, and the service life and the working stability of the submersible pump are further improved.

In the submersible pump, the cross section of the side wall of the seat body in the axial direction of the rotating shaft is L-shaped, the flow channel comprises an inlet and an outlet, the water inlet end of the guide sleeve extends out of the inlet, the water inlet end of the guide sleeve is bent outwards to form an annular flanging, and the annular flanging is tightly pressed on the end face of the seat body to form sealing. The annular flanging can limit the installation position of the guide sleeve, so that the guide sleeve and the seat body can be installed in place at one time, the sealing effect between the guide sleeve and the seat body can be increased, the fluid is ensured to be completely discharged from the flow channel, and the working stability is further improved.

In the submersible pump, the end face of the annular flange and the inner side wall of the guide sleeve are in arc transition, so that fluid can stably enter the flow channel.

Compared with the prior art, the submersible pump has the following advantages:

1. the convex blocks and the grooves are alternately distributed, so that the surface of the impeller is concave-convex alternately, and under the high-speed rotation of the impeller, silt collected in the flow channel can be squeezed into the grooves by the convex blocks and is quickly discharged outside, so that the flow channel is effectively prevented from being blocked by the silt, the working stability of the submersible pump is improved, and the service life of the submersible pump is prolonged.

2. The annular flanging can limit the installation position of the guide sleeve, so that the guide sleeve and the seat body can be installed in place at one time, the sealing effect between the guide sleeve and the seat body can be increased, the fluid is ensured to be completely discharged from the flow channel, and the working stability is further improved.

Drawings

Fig. 1 is a schematic structural view of the present submersible pump.

Fig. 2 is a schematic view of the position structure of the impeller and the guide vane.

In the drawings, 1, a pump casing; 2. a rotating shaft; 3. a guide vane; 3a, a base; 3a1, seat body; 3a2, guide sleeve; 3a2a, annular flanging; 4. an impeller; 4a, a connecting part; 4a1, bumps; 4a2, groove; 5. and a flow passage.

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 submersible pump includes a pump housing 1, a rotating shaft 2 disposed in the pump housing 1, and a plurality of guide vanes 3 which are annular and are sleeved outside the rotating shaft 2, wherein the guide vanes 3 are axially distributed along the rotating shaft 2. All be equipped with between every stator 3 and the pivot 2 and be annular impeller 4, and impeller 4 and pivot 2 link firmly.

Specifically, as shown in fig. 1 and 2, the impeller 4 includes a ring-shaped connecting portion 4a, and the connecting portion 4a is sleeved outside the rotating shaft 2 and is fixedly connected to the rotating shaft 2. The guide vane 3 comprises a base 3a sleeved outside the connecting part 4a, and an annular flow passage 5 is formed between the base 3a and the connecting part 4 a. As shown in the figure, a strip-shaped protrusion 4a1 is integrally formed on the outer wall of the connecting portion 4a, the length of the protrusion 4a1 extends along the axial direction of the rotating shaft 2, and both ends of the protrusion 4a1 extend out of the flow channel 5. The plurality of the convex blocks 4a1 are uniformly distributed along the circumferential direction of the rotating shaft 2, the cross section of each convex block 4a1 is arc-shaped, a groove 4a2 with the arc-shaped cross section is formed between every two adjacent convex blocks 4a1, and the arc wall of each convex block 4a1 and the inner wall of each groove 4a2 are in arc transition. In the present embodiment, the number of the bumps 4a1 is preferably 6. The bumps 4a1 and the grooves 4a2 are alternately distributed, so that the surface of the impeller 4 is concave-convex alternately, and under the high-speed rotation of the impeller 4, the bumps 4a1 can squeeze silt gathered in the flow channel 5 into the grooves 4a2 and discharge the silt quickly, thereby effectively preventing the silt from blocking the flow channel 5, and improving the working stability and the service life of the submersible pump.

The base 3a includes a ring-shaped seat body 3a1 and a ring-shaped guide sleeve 3a2 fixed in the seat body 3a 1. The guide sleeve 3a2 is sleeved outside the connecting part 4a, and the flow channel 5 is formed between the guide sleeve 3a2 and the connecting part 4 a. The guide sleeve 3a2 is rigid and made of a metal material, and in the present embodiment, the guide sleeve 3a2 is preferably made of a stainless steel material. Naturally, the guide bush 3a2 may be made of titanium alloy. The outer side wall of the guide sleeve 3a2 is tightly contacted with the inner side wall of the seat body 3a1 to form a seal. The rigid guide sleeve 3a2 made of metal material and the connecting part 4a form a flow channel 5, so that the abrasion speed of the guide sleeve 3a2 can be effectively delayed, and the service life and the working stability of the submersible pump are further improved.

Further, the side wall of the seat body 3a1 has an L-shaped cross section in the axial direction of the rotating shaft 2, the flow channel 5 includes an inlet and an outlet, the water inlet end of the guide sleeve 3a2 extends out of the inlet, the water inlet end of the guide sleeve 3a2 is bent outwards to form an annular flange 3a2a, and the annular flange 3a2a is tightly pressed on the end surface of the seat body 3a1 to form a seal. The annular flange 3a2a can limit the installation position of the guide sleeve 3a2, so that the guide sleeve 3a2 and the seat body 3a1 can be installed in place at one time, the sealing effect between the guide sleeve 3a2 and the seat body 3a1 can be increased, the fluid is ensured to be completely discharged from the flow channel 5, and the working stability is further improved. In this embodiment, it is preferable that the end face of the annular flange 3a2a and the inner side wall of the guide sleeve 3a2 form an arc transition, so that the fluid can smoothly enter the flow passage 5.

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

1. The utility model provides a submersible pump, includes pump case (1), locate pivot (2) in pump case (1) and cover a plurality of stator (3) outside pivot (2), all be equipped with impeller (4) between every stator (3) and pivot (2), and impeller (4) and pivot (2) link firmly, impeller (4) are including being annular connecting portion (4a), stator (3) are including cover base (3a) outside connecting portion (4a), and form between base (3a) and connecting portion (4a) and be annular runner (5), its characterized in that, connecting portion (4a) outer wall on integrated into one piece have and be bar lug (4a1), lug (4a1) length is along pivot (2) axial extension, and lug (4a1) both ends all stretch out runner (5), lug (4a1) have a plurality ofly and along pivot (2) circumference equipartition, lug (4a1) transversal personally submit circular arc, a groove (4a2) with a circular arc-shaped cross section is formed between every two adjacent bumps (4a1), and the arc wall of each bump (4a1) and the inner wall of each groove (4a2) are in arc transition.

2. The submersible pump according to claim 1, wherein the base (3a) comprises a ring-shaped seat body (3a1) and a guide sleeve (3a2) which is fixedly arranged in the seat body (3a1) and is in a ring shape, the guide sleeve (3a2) is sleeved outside the connecting part (4a), the flow passage (5) is formed between the guide sleeve (3a2) and the connecting part (4a), the guide sleeve (3a2) is rigid and made of a metal material, and the outer side wall of the guide sleeve (3a2) is in close contact with the inner side wall of the seat body (3a1) to form a seal.

3. The submersible pump according to claim 2, characterized in that the side wall of the seat body (3a1) has an L-shaped cross section in the axial direction of the rotating shaft (2), the flow passage (5) comprises an inlet and an outlet, the water inlet end of the guide sleeve (3a2) extends out of the inlet, the water inlet end of the guide sleeve (3a2) is bent outwards to form an annular flange (3a2a), and the annular flange (3a2a) is tightly pressed on the end surface of the seat body (3a1) to form a seal.

4. The submersible pump according to claim 3, characterized in that the end face of the annular flange (3a2a) and the inner side wall of the guide sleeve (3a2) are in circular arc transition.