CN210423068U

CN210423068U - Submersible pump

Info

Publication number: CN210423068U
Application number: CN201921023236.1U
Authority: CN
Inventors: 罗建明
Original assignee: Hunan Changchang Electric Pump Technology Co Ltd
Current assignee: Hunan Changchang Electric Pump Technology Co Ltd
Priority date: 2019-07-02
Filing date: 2019-07-02
Publication date: 2020-04-28
Anticipated expiration: 2029-07-02

Abstract

The utility model discloses a submersible pump, wherein, the submersible pump forms the first cavity that has the water inlet including between shell and the water inlet base of intaking, form the second cavity between water guide cover and the shell of intaking, form the third cavity between impeller base member and the shell of intaking, and be equipped with the fourth cavity that has the delivery port on the play water installation, first cavity, the second cavity, third cavity and fourth cavity communicate in proper order, the base of intaking forms the surface of first cavity, the water guide cover that leads forms the surface of second cavity and the smooth surface that the surface composition that the impeller base member formed the third cavity set up with the shell of intaking relatively, and the blade is concave to the second cavity towards the one end of second cavity. The utility model discloses can make the fluid of inflow cavity smooth transition, reduce the swirl between water guide cover and the impeller and reduce the hydraulic loss that the fluid produced when flowing through the impeller, improve the work efficiency of water pump.

Description

Submersible pump

Technical Field

The utility model relates to a water pump technical field especially relates to a immersible pump.

Background

At present, the submersible pump has the advantages that the submersible pump is simple and convenient to install, use and maintain, the pump body is small, the submersible pump is convenient to move, a pump room does not need to be built, the structure is simple, raw materials are saved, the submersible pump can be started to work only by putting the submersible pump into water during operation, and the like. In the prior art, because the upper hub of the water guide sleeve of the submersible pump is not parallel and level with the hub of the impeller, the connection part of the cavity of the pump cavity through which fluid flows has a step and the inlet of the impeller is of a vertical structure, vortex is easily generated between the water guide sleeve and the impeller, water flow is not smooth, and the efficiency of the water pump is affected.

In view of the above, there is a need for a submersible pump that overcomes or alleviates at least the above-mentioned deficiencies of the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a immersible pump, aims at solving current immersible pump and has the step because of pump chamber cavity junction to and the import of impeller is that the vertical structure causes the technical problem who produces the swirl between water guide sleeve and the impeller easily.

In order to achieve the above object, the present invention provides a submersible pump, wherein the submersible pump comprises a housing, a motor disposed in the housing, a main shaft drivingly connected to the motor, and a water inlet device, a water guide sleeve, an impeller and a water outlet device sequentially sleeved on the main shaft;

the water inlet device comprises a water inlet base and a water inlet shell, the water inlet base is connected with the main shaft and the shell respectively, the water inlet shell is sleeved on the outer side of the water inlet base, and a first cavity with a water inlet is formed between the water inlet shell and the water inlet base;

the water guide sleeve is abutted to the surface of the water inlet base, which is far away from the motor, and a second cavity is formed between the water guide sleeve and the water inlet shell;

the impeller comprises an impeller base body connected with the main shaft and a plurality of blades connected with the impeller base body, a third chamber is formed between the impeller base body and the water inlet shell, and one end, facing the second chamber, of each blade is concave to the second chamber;

the water outlet device is provided with a fourth cavity with a water outlet, the first cavity, the second cavity, the third cavity and the fourth cavity are sequentially communicated, the water inlet base forms the surface of the first cavity, the water guide sleeve forms the surface of the second cavity and the impeller base forms the surface of the third cavity, and the surface of the third cavity forms a smooth surface opposite to the water inlet shell.

Preferably, the water guide sleeve comprises a water guide base connected with the water inlet base and a plurality of water guide plates connected with the water guide base, the plurality of water guide plates are arranged at intervals, and the outer edges of the water guide plates are concave to the second cavity.

Preferably, the water installations still includes that the interval sets up a plurality of stator of intaking in the first cavity, the relative both ends of stator of intaking are connected respectively the shell of intaking with the base of intaking, along the rivers direction, the stator of intaking intake end with the end parallel and level of intaking of the base of intaking, the stator of intaking go out the water end with the play water end parallel and level of the base of intaking.

Preferably, the water inlet base and the surface of the water guide sleeve close to the main shaft are recessed to form two accommodating steps respectively, the two accommodating steps and the main shaft surround to form an accommodating space, the submersible pump further comprises a mechanical seal sleeved on the main shaft, and the mechanical seal is accommodated in the accommodating space.

Preferably, the water outlet device comprises a water outlet base connected with the main shaft and a water outlet shell surrounding the water outlet base, the water outlet base is connected with the water inlet shell, a fourth cavity is formed between the water outlet base and the water outlet shell, and the water outlet is formed in the water outlet shell.

Preferably, the water outlet device further comprises a plurality of water outlet guide vanes arranged in the fourth cavity at intervals, and two opposite ends of each water outlet guide vane are respectively connected with the water outlet shell and the water outlet base.

Preferably, the submersible pump further comprises a first sealing ring disposed between the housing and the water inlet base, a second sealing ring disposed between the water inlet base and the water guide sleeve, and a third sealing ring disposed between the impeller and the water outlet housing.

Preferably, the impeller base is connected to the main shaft by a key.

Preferably, the water inlet device further comprises a first bearing matched with the main shaft, and the water inlet base is connected with the main shaft through the first bearing.

Preferably, the water outlet device further comprises a second bearing arranged on the main shaft, and the water outlet base is connected with the main shaft through the second bearing.

The technical scheme of the utility model, because the immersible pump that provides is including the first cavity that communicates in proper order, the second cavity, third cavity and fourth cavity, the surface that the base formed first cavity of intaking, the surface that the water guide cover formed the second cavity and the smooth surface that the surface component that the impeller base member formed the third cavity set up with the shell of intaking is relative, and the impeller blade face is concave to the second cavity to the one end of second cavity, can be so that the fluid smooth transition of inflow cavity, the hydraulic loss that produces when having reduced the swirl between water guide cover and the impeller and having reduced the fluid flow through the impeller, the work efficiency of water pump is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural view of a submersible pump according to an embodiment of the present invention;

fig. 2 is a schematic view of a partial structure of the submersible pump according to the embodiment of the present invention;

fig. 3 is the utility model discloses the structure schematic diagram of water inlet guide vane in the immersible pump.

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

The reference numbers of the utility model explain:

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1, according to an aspect of the present invention, there is provided a submersible pump, which includes a housing 1, a motor (not shown) disposed in the housing 1, a main shaft 2 connected to the motor, and a water inlet device 3, a water guide sleeve 4, an impeller 5 and a water outlet device 6 sequentially sleeved on the main shaft 2; the water inlet device 3 comprises a water inlet base 31 connected with the main shaft 2 and the shell 1 respectively, and a water inlet shell 32 sleeved outside the water inlet base 31, wherein a first chamber 33 with a water inlet 34 is formed between the water inlet shell 32 and the water inlet base 31; the water guide sleeve 4 is abutted with the surface of the water inlet base 31 far away from the motor, and a second cavity 43 is formed between the water guide sleeve 4 and the water inlet shell 32; the impeller 5 comprises an impeller base body 51 connected with the main shaft 2 and a plurality of blades 52 connected with the impeller base body 51, a third chamber 53 is formed between the impeller base body 51 and the water inlet shell 32, and one end of each blade 52 facing the second chamber 43 is concave to the second chamber 43; the water outlet device 6 is provided with a fourth chamber 63 with a water outlet 64, the first chamber 33, the second chamber 43, the third chamber 53 and the fourth chamber 63 are sequentially communicated, the surface of the first chamber 33 formed by the water inlet base 31, the surface of the second chamber 43 formed by the water guide sleeve 4 and the surface of the third chamber 53 formed by the impeller base body 51 form a smooth surface opposite to the water inlet shell 32. It should be noted that the first arc 54 of the vane 52 concave toward the second chamber 43 may be an elliptical arc of 1/4, but other suitable arc segments are also possible, and the invention is not limited in any way.

The technical scheme of the utility model, because the immersible pump that provides is including the first cavity 33 that communicates in proper order, the second cavity 43, third cavity 53 and fourth cavity 63, the surface that the base 31 of intaking formed first cavity 33, the surface that the water guide sleeve 4 formed second cavity 43 and impeller base member 51 formed third cavity 53 constitutes the smooth surface that sets up relatively with water inlet shell 32, and impeller 5 blade 52 is concave to second cavity 43 towards the one end of second cavity 43, can be so that the fluid smooth transition that flows into the cavity, the swirl between water guide sleeve 4 and the impeller 5 has been reduced and the hydraulic loss that produces when reducing the fluid and flowing through impeller 5, the work efficiency of high water pump is improved.

Further, the surface of the second chamber 43 formed by the water guide base 41 and the surface of the third chamber 53 formed by the impeller base 51 are parallel to the main shaft 2, respectively. The water guide base 41 and the water inlet base 31 have the same surface area and shape, i.e., the water guide base 41 and the water inlet base 31 are completely attached to each other. The surfaces of the impeller base 51 and the water guide base 41 facing each other have the same area and the same shape. Thereby making the flow flowing into the second and

third chambers

43 and 53 smoothly transited and reducing the swirl between the water guide sleeve 4 and the impeller 5.

Referring to fig. 2, in an embodiment, the water guide sleeve 4 includes a water guide base 41 connected to the water inlet base 31 and a plurality of water guide plates 42 connected to the water guide base 41, the plurality of water guide plates 42 are spaced apart, and outer edges of the water guide plates 42 are recessed into the second chamber 43. The water guide plate 42 is concave to the outer edge of the second chamber 43 as a second circular arc 44. The water guide plates 42 are spaced apart from each other to separate the fluid flowing through the water guide sleeve 4, and the outer edges of the water guide plates 42 are recessed into the second chamber 43, so that the fluid can smoothly flow through the water guide sleeve 4, and thus, generation of a vortex can be prevented. More specifically, the water guide base 41 includes a water guide base body (not labeled) sleeved on the main shaft 2 and an outer edge plate (not labeled) bent and extended from the water guide base body, and the outer edge plate is completely attached to the water inlet base 31 and connected by a screw. The water guide plate 42 is connected with the water guide base body and the outer edge plate respectively.

Further, the water inlet device 3 further includes a plurality of water inlet guide vanes 35 disposed in the first chamber 33 at intervals, opposite ends of the water inlet guide vanes 35 are connected to the water inlet housing 32 and the water inlet base 31, along the water flow direction, the water inlet ends of the water inlet guide vanes 35 are flush with the water inlet end of the first chamber 33, and the water outlet ends of the water inlet guide vanes 35 are flush with the water outlet end of the first chamber 33. The two ends of the water inlet guide vane 35 are flush with the water inlet end and the water outlet end of the first chamber 33, respectively, so as to ensure that the fluid flows through the water inlet end and the water outlet end of the first chamber 33 relatively smoothly. Referring to FIG. 3, in one embodiment, the water inlet guide vanes 35 are straight blades, making the water inlet flow pattern more smooth. In the present embodiment, the water flow direction is a water flow direction along the water inlet 34, the first chamber 33, the second chamber 43, the third chamber 53, the fourth chamber 63, and the water outlet 64.

Specifically, the water inlet base 31 and the surface of the water guide sleeve 4 near the main shaft 2 are recessed to form two accommodating steps (not labeled), the two accommodating steps and the main shaft 2 surround to form an accommodating space 45, the submersible pump further comprises a mechanical seal 21 sleeved on the main shaft 2, and the mechanical seal 21 is accommodated in the accommodating space 45. The mechanical seal 21 has good sealing performance, and can avoid the contact between the main shaft 2 and fluid and prevent the fluid from influencing the transmission of the main shaft 2.

In addition, the water outlet device 6 comprises a water outlet base 61 connected with the main shaft 2 and a water outlet shell 62 surrounding the water outlet base 61, the water outlet base 61 is connected with the water inlet shell 32, a fourth cavity 63 is formed between the water outlet base 61 and the water outlet shell 62, and a water outlet 64 is formed on the water outlet shell 62. More specifically, the water outlet device 6 further includes a plurality of water outlet guide vanes 65 disposed at intervals in the fourth chamber 63, and opposite ends of the water outlet guide vanes 65 are respectively connected to the water outlet housing 62 and the water outlet base 61. Along the water flow direction, the water inlet end of the water outlet guide vane 65 may also be flush with the water inlet end of the fourth chamber 63, and the water outlet end of the water outlet guide vane 65 may also be flush with the water outlet end of the fourth chamber 63. The two ends of the water outlet guide vane 65 are flush with the water inlet end and the water outlet end of the fourth chamber 63, respectively, so as to ensure that the fluid flows through the water inlet end and the water outlet end of the fourth chamber 63 relatively smoothly. The water outlet guide vanes 65 may also be straight blades, so that the water inlet flow pattern is more stable. The utility model discloses in, go out water base 61 and the shell 32 of intaking passes through bolted connection, makes things convenient for the dismouting.

Meanwhile, the submersible pump further comprises a first sealing ring 22 arranged between the shell 1 and the water inlet base 31, a second sealing ring 23 arranged between the water inlet base 31 and the water guide sleeve 4, and a third sealing ring 24 arranged between the impeller 5 and the water outlet shell 62. The first sealing ring 22 can reduce the abrasion between the housing 1 and the water inlet base 31 and the leakage of fluid, the second sealing ring 23 can reduce the abrasion between the water inlet base 31 and the water guide sleeve 4, and the third sealing ring 24 can reduce the abrasion between the impeller 5 and the water outlet housing 62 and the leakage of fluid.

Further, the impeller base 51 is connected to the main shaft 2 by a key 25. The main shaft 2 and the impeller 5 transmit torque through the key 25, so that the transmission efficiency can be improved.

More specifically, the water inlet device 3 further includes a first bearing 26 engaged with the main shaft 2, the water inlet base 31 is connected with the main shaft 2 through the first bearing 26, and the first bearing 26 may be a rolling bearing. The water outlet device 6 further comprises a second bearing 27 arranged on the main shaft 2, and the water outlet base 61 is connected with the main shaft 2 through the second bearing 27. The second bearing 27 may be a water lubricated bearing, and a bushing 28 may be installed in the second bearing 27, and the bushing 28 may reduce friction between the main shaft 2 and the second bearing 27. The water outlet device 6 further comprises a nut 29 arranged at the end part of the main shaft 2, and the nut 29 abuts against the water outlet base 61 and is in threaded connection with the main shaft 2.

In addition, the clearance between the blades 52 of the impeller 5 and the water inlet housing 32 may be 1.5 mm to 2 mm, thereby further reducing the hydraulic loss of the fluid flowing through the impeller 5. The gap between the water outlet end of the blades 52 and the water inlet end of the water outlet guide vanes 65 may be 0.05 to 0.15 times the diameter of the water outlet device 6 to improve the stability of the fluid flow state to some extent.

The above is only the preferred embodiment of the present invention, and not the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A submersible pump, comprising:

the water inlet device, the water guide sleeve, the impeller and the water outlet device are sequentially sleeved on the main shaft;

2. The submersible pump of claim 1, wherein the water guide sleeve comprises a water guide base connected with the water inlet base and a plurality of water guide plates connected with the water guide base, the plurality of water guide plates are arranged at intervals, and outer edges of the water guide plates are concave to the second chamber.

3. The submersible pump of claim 1, wherein the water intake device further comprises a plurality of water intake guide vanes disposed at intervals in the first chamber, opposite ends of the water intake guide vanes are connected to the water intake housing and the water intake base, respectively, and along a water flow direction, a water intake end of the water intake guide vanes is flush with a water intake end of the water intake base, and a water outlet end of the water intake guide vanes is flush with a water outlet end of the water intake base.

4. The submersible pump according to claim 1, wherein the water inlet base and the water guide sleeve are recessed on the surface close to the main shaft to form two accommodating steps, the two accommodating steps and the main shaft surround to form an accommodating space, the submersible pump further comprises a mechanical seal sleeved on the main shaft, and the mechanical seal is accommodated in the accommodating space.

5. The submersible pump of any one of claims 1-4, wherein the water outlet arrangement comprises a water outlet base connected to the main shaft and a water outlet housing surrounding the water outlet base, the water outlet base and the water inlet housing being connected, the water outlet base and the water outlet housing forming the fourth chamber therebetween, the water outlet housing having the water outlet formed thereon.

6. The submersible pump of claim 5, wherein the water outlet device further comprises a plurality of water outlet guide vanes disposed at intervals within the fourth chamber, opposite ends of the water outlet guide vanes being connected to the water outlet housing and the water outlet base, respectively.

7. The submersible pump of claim 5, further comprising a first seal disposed between the housing and the water intake base, a second seal disposed between the water intake base and the water guide sleeve, and a third seal disposed between the impeller and the water outlet housing.

8. The submersible pump of any of claims 1-4, wherein the impeller base is connected to the main shaft by a key.

9. The submersible pump of any one of claims 1-4, wherein the water intake apparatus further comprises a first bearing that mates with the main shaft, the water intake base being connected to the main shaft via the first bearing.

10. The submersible pump of claim 5, wherein the water outlet apparatus further comprises a second bearing disposed on the main shaft, the water outlet base being connected to the main shaft via the second bearing.