CN216342862U - Vertical submerged pump - Google Patents

Abstract

The utility model discloses a vertical submerged pump, which comprises a pump shell with a hollow cavity, an impeller which is rotatably arranged in the hollow cavity of the pump shell and a motor for driving the impeller to rotate, wherein the motor is positioned above the pump shell, the motor is provided with a motor shaft, the motor shaft is of an integral structure, the motor shaft is positioned in the hollow cavity of the pump shell and extends downwards from the upper end part of the pump shell to the lower end part of the pump shell, and the impeller is arranged on the lower end part of the motor shaft. The motor shaft of the vertical submerged pump is the pump shaft, is of an integral long shaft structure, is simple in structure and convenient to assemble, and solves the problems of large vibration, low strength, complex structure, large volume and complex assembly and maintenance caused by sectional type shafts.

Description

Vertical submerged pump

Technical Field

The utility model relates to the technical field of pump valves, in particular to a vertical submerged pump.

Background

The submerged pump is suitable for conveying various corrosive media such as belt particles, high viscosity, strong acid, alkali, salt, strong oxidant and the like, and has an extremely wide application range. The structure is that the motor part is placed on the liquid level, and the pump part is placed under the liquid level. In the prior art, a motor shaft and a pump shaft of a submerged pump are of a split structure and are connected through a shaft sleeve, a coupling and the like. The motor shaft and the pump shaft are arranged in a split mode, so that the submerged pump has the problems of large vibration, low strength, complex structure, large volume and complex assembly and maintenance.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a vertical submerged pump aiming at the problems in the prior art, wherein a motor shaft of the vertical submerged pump is of an integral long shaft structure, so that the problems of large vibration, low strength, complex structure, large volume and complex assembly and maintenance caused by a sectional type shaft are solved.

In order to achieve the purpose, the utility model adopts the technical scheme that:

the utility model provides a vertical submerged pump, includes the pump casing that has the cavity, can set up with rotating impeller in the cavity of pump casing and be used for ordering about impeller pivoted motor, the motor is located the top of pump casing, the motor has the motor shaft, the motor shaft is an overall structure, the motor shaft is located in the cavity of pump casing, and certainly the upper end downwardly extending of pump casing reaches the lower tip of pump casing, the impeller sets up on the lower tip of motor shaft.

The submerged pump also comprises a protective sleeve arranged outside the motor shaft in a sleeved mode, and the motor shaft can be protected through the protective sleeve so as to avoid corrosion of the motor shaft.

Further, the submerged pump still including set up the pump casing with adapter between the motor, the motor shaft passes the inner chamber of adapter and certainly the upper end downwardly extending of pump casing reaches the lower tip of pump casing, the protective sheath is including setting up last protective sheath in the adapter and setting up lower protective sheath in the pump casing.

Furthermore, the upper protective sleeve and the lower protective sleeve are partially overlapped, and the upper protective sleeve is sleeved outside the lower protective sleeve at the overlapped part.

Still further, the submersible pump further comprises a first seal disposed between the engagement surfaces of the upper and lower protective casings.

Furthermore, the submerged pump still establishes including the cover establish go up the second sealing member on the protective sheath, the second sealing member adopts lip seal, follows the axial extending direction of motor shaft, the second sealing member is provided with one set of or multiunit.

Still further, the submersible pump further comprises a third seal disposed between the pump housing and the engagement surface of the adapter, the third seal employing a silicon carbide sealing disk.

The submerged pump also comprises one or more partition plates fixedly arranged in the pump shell, when the partition plates are arranged in a plurality, the partition plates are sequentially arranged at intervals along the vertical direction, shaft holes matched with the motor shaft are formed in the partition plates, and the motor shaft penetrates through the shaft holes of the partition plates. The arrangement of the partition plate can effectively prevent liquid splashed and overflowed when the impeller rotates from splashing upwards.

The submerged pump also comprises a backflow defoaming pipe fixedly arranged on the pump shell, and the backflow defoaming pipe is positioned outside the pump shell. The backflow defoaming pipe can effectively eliminate foam caused by backflow of certain easily-foamed liquid, and simultaneously has the function of preventing liquid from splashing

The pump housing and the impeller are both made of a corrosion resistant plastic material. So that the submerged pump can be applied for pumping corrosive media.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages: the motor shaft of the vertical submerged pump is the pump shaft, is of an integral long shaft structure, is simple in structure and convenient to assemble, and solves the problems of large vibration, low strength, complex structure, large volume and complex assembly and maintenance caused by sectional type shafts.

Drawings

FIG. 1 is a schematic front view of a vertical submerged pump according to the present embodiment;

fig. 2 is a schematic sectional view taken along line a-a in fig. 1.

Wherein: 1. a pump housing; 2. an impeller; 3. a motor; 31. a motor shaft; 4. a transfer seat; 51. an upper protective sleeve; 52. a lower protective sleeve; 61. a first seal member; 62. a second seal member; 63. a third seal member; 7. a partition plate; 8. and (4) refluxing the defoaming pipe.

Detailed Description

In order to make the technical solutions of the present invention better understood and more clearly understood by those skilled in the art, the technical solutions of the embodiments of the present invention will be described below in detail and completely with reference to the accompanying drawings. It should be noted that the implementations not shown or described in the drawings are in a form known to those of ordinary skill in the art. Additionally, while exemplifications of parameters including particular values may be provided herein, it is to be understood that the parameters need not be exactly equal to the respective values, but may be approximated to the respective values within acceptable error margins or design constraints. It is to be understood that the described embodiments are merely exemplary of a portion of the utility model and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. In addition, the terms "comprises" and "comprising," and any variations thereof, in the description and claims of this invention, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

As shown in fig. 1 and 2, the vertical submerged pump of the present invention includes a pump casing 1, the pump casing 1 having a hollow cavity, an impeller 2 rotatably disposed in the hollow cavity of the pump casing 1, and a motor 3 for driving the impeller 2 to rotate.

The motor 3 is located the liquid level, and pump casing 1 is located under the liquid level, and the submerged pump is still including setting up adapter 4 between pump casing 1 and motor 3, adapter 4's upper and lower both ends respectively with motor 3 and pump casing 1 fixed connection.

The motor 3 has a motor shaft 31, the motor shaft 31 is an integral long shaft structure, it passes through the inner cavity of the adapter 4 and extends into the hollow cavity of the pump housing 1, and extends downwards from the upper end of the pump housing 1 to the lower end of the pump housing 1, and the impeller 2 is arranged on the lower end of the motor shaft 31.

Because the motor shaft 31 of the submerged pump is of an integral long shaft structure, the submerged pump does not need to be provided with a pump shaft, the connection process of the motor shaft 31 and the pump shaft is omitted, and the problems of large vibration, low strength, complex structure, large volume and complex assembly and maintenance caused by a sectional type shaft can be avoided.

The extension section of traditional submerged pump motor shaft needs the bearing to support, and the motor shaft 31 of the submerged pump of this application compares with the motor shaft of traditional submerged pump, and the diameter is great relatively, and motor shaft 31 is made by metal material for motor shaft 31's rigidity is stronger, need not extra bearing to support, and this reduce cost, simplified structure, reduce the volume.

The submerged pump also comprises a protective sleeve sleeved outside the motor shaft 31, and the protective sleeve can protect the motor shaft 31 made of metal materials from being corroded by liquid.

Specifically, the protective sleeve includes an upper protective sleeve 51 disposed in the adaptor 4 and a lower protective sleeve 52 disposed in the pump housing 1, and both the upper protective sleeve 51 and the lower protective sleeve 52 are sleeved outside the motor shaft 31.

The lower part of the upper protective cover 51 is overlapped with the upper part of the lower protective cover 52, the upper protective cover 51 is sleeved outside the lower protective cover 52 at the overlapping part, and a first sealing member 61 is arranged between the circumferential joint surfaces of the upper protective cover 51 and the lower protective cover 52. In this embodiment, the first seal 61 is an O-ring. In this way, it is possible to prevent liquid from entering between the upper protective sheath 51 and the motor shaft 31 along the outer periphery of the lower protective sheath 52, thereby corroding the motor shaft 31.

The submerged pump further comprises a second seal 62 which is sleeved on the upper protective sleeve 51. In this embodiment, the second sealing member 62 is a lip seal, and one or more sets of the second sealing member 62 may be provided along the axial extension direction of the motor shaft 31.

The submersible pump further comprises a third seal 63 provided between the engaging faces of the pump housing 1 and the adaptor 4. In the present embodiment, the third seal 63 is a silicon carbide seal disk.

The second seal 62 is a dynamic seal, the third seal 63 is a static seal, and the liquid in the pump housing 1 can be further prevented from splashing and leaking by the cooperation of the second seal 62 and the third seal 63.

The submerged pump also comprises a partition plate 7 fixedly arranged in the pump shell 1, a shaft hole matched with the motor shaft 31 is formed in the partition plate 7, and the motor shaft 31 penetrates through the shaft hole of the partition plate 7. By arranging the partition plate 7, the liquid splashed and overflowed when the impeller 2 rotates can be effectively prevented from splashing upwards.

The partition 7 may be provided with one or more. When a plurality of the partition plates 7 are provided, the partition plates 7 are sequentially provided at intervals in the up-down direction.

The submerged pump also comprises a backflow defoaming pipe 8 fixedly arranged on the pump shell 1, the backflow defoaming pipe 8 is positioned outside the pump shell 1, and the outlet end of the backflow defoaming pipe 8 is positioned below the liquid level. The backflow defoaming pipe 8 can effectively eliminate foam caused by backflow of certain liquid which is easy to foam, and the backflow defoaming pipe 8 also has the function of preventing the liquid from splashing.

Preferably, the submerged pump parts located below the liquid level, such as the pump housing 1, impeller 3, protective casing, baffle 7 and return defoaming pipe 8, are made of corrosion resistant plastic material. Thus, the submerged pump may be applied for pumping corrosive media.

The above-mentioned embodiments are merely illustrative of the technical idea and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the scope of the present invention.

Claims (10)

1. A vertical submerged pump, including the pump casing that has the cavity, can set up rotatably in the impeller in the cavity of pump casing and be used for driving the rotatory motor of impeller, its characterized in that: the motor is located the top of pump casing, the motor has the motor shaft, the motor shaft is an overall structure, the motor shaft is located in the cavity of pump casing, and certainly the upper end downwardly extending of pump casing reaches the lower tip of pump casing, the impeller sets up on the lower tip of motor shaft.

2. The vertical submersible pump of claim 1, wherein: the submerged pump also comprises a protective sleeve sleeved outside the motor shaft.

3. The vertical submersible pump according to claim 2, characterized in that: the submerged pump is still including setting up the pump casing with adapter between the motor, the motor shaft passes the inner chamber of adapter and certainly the upper end downwardly extending of pump casing the lower tip of pump casing, the protective sheath is including setting up last protective sheath in the adapter and setting up and being in lower protective sheath in the pump casing.

4. The vertical submersible pump according to claim 3, characterized in that: the upper protective sleeve and the lower protective sleeve are partially overlapped, and the upper protective sleeve is sleeved outside the lower protective sleeve at the overlapped part.

5. The vertical submersible pump according to claim 4, characterized in that: the submerged pump further comprises a first seal disposed between the upper protective sheath and the engagement surface of the lower protective sheath.

6. The vertical submersible pump according to claim 3, characterized in that: the submerged pump is characterized by further comprising a second sealing element which is sleeved on the upper protective sleeve, the second sealing element is lip-sealed and extends along the axial extension direction of the motor shaft, and one or more groups of second sealing elements are arranged.

7. The vertical submersible pump according to claim 3, characterized in that: the submerged pump further comprises a third sealing element arranged between the pump shell and the joint surface of the adapter, and the third sealing element is a silicon carbide sealing disc.

8. The vertical submersible pump of claim 1, wherein: the submerged pump also comprises one or more partition plates fixedly arranged in the pump shell, when the partition plates are arranged in a plurality, the partition plates are sequentially arranged at intervals along the vertical direction, shaft holes matched with the motor shaft are formed in the partition plates, and the motor shaft penetrates through the shaft holes of the partition plates.

9. The vertical submersible pump of claim 1, wherein: the submerged pump also comprises a backflow defoaming pipe fixedly arranged on the pump shell, and the backflow defoaming pipe is positioned outside the pump shell.

10. The vertical submersible pump of claim 1, wherein: the pump housing and the impeller are both made of a corrosion resistant plastic material.

Images