CN223270203U - Submersible pump - Google Patents

Abstract

The utility model provides a submersible pump, which relates to the technical field of pumps and comprises a pump body, an impeller and a driving source, wherein a pump cavity is arranged in the pump body, a water inlet and a water outlet which are communicated with the pump cavity are formed in the pump body, the impeller is accommodated in the pump cavity, a cutting edge for cutting foreign matters is arranged at the water inlet of the pump body, and the driving source is provided with a driving shaft which is in power connection with the impeller and is used for driving the impeller to rotate. In the utility model, the water inlet of the pump body is provided with the cutting edge for cutting foreign matters, the water inlet of the submersible pump generates rapid water flow, so that large-size sundries in water rapidly strike the cutting edge at the water inlet, and the large-size sundries in water are cut off and crushed by the cutting edge, thereby reducing the situation that the water inlet is blocked, protecting the sealing device and related structural parts in the pump body, and prolonging the normal service life of the pump.

Description

Submersible pump

Technical Field

The application relates to the technical field of pumps, in particular to a submersible pump.

Background

The submersible pump is used as a water supply and drainage tool in daily life in a large quantity, and in recent years, the portable large-flow submersible pump has the characteristics of small weight and large discharge capacity and plays an important role in flood prevention and drought resistance. In the operation process of flood prevention and drought resistance, the field situation is complex and severe, and a large amount of sundries can be contained in water, so that on one hand, the water inlet of the submersible pump is easily blocked by the large-size sundries. On the other hand, the sealing device of the submersible pump is wound and worn by the large-size hard sundries which are wound in the pump body, so that the sealing of the pump is invalid, and the submersible pump is abnormally damaged. In addition, the large-size hard sundries can also influence the normal operation of the impeller.

Disclosure of utility model

The application aims to solve the technical problem of providing a submersible pump aiming at the defects in the prior art.

A submersible pump comprises a pump body, an impeller and a driving source, wherein a pump cavity is arranged in the pump body, a water inlet and a water outlet which are communicated with the pump cavity are formed in the pump body, the impeller is accommodated in the pump cavity, a cutting edge for cutting foreign matters is arranged at the water inlet of the pump body, and the driving source is provided with a driving shaft which is in power connection with the impeller and is used for driving the impeller to rotate.

Optionally, the cutting edge is a separate component and is detachably mounted on the pump body.

Optionally, the cutting edge is part of the pump body and is a sharp feature on the pump body.

Optionally, the driving source is a motor, the motor is provided with a shell, the pump body comprises a pump shell and a connecting structure, the connecting structure is connected between the pump shell and the shell of the motor, the pump cavity is positioned in the pump shell, a sealing device is arranged on the driving shaft in the connecting structure, and a plurality of water inlets are arranged on the connecting structure;

the pump housing is provided with an opening at one side facing the connecting structure, the driving shaft of the motor extends out from one side of the connecting structure and passes through the connecting structure and the opening to enter the pump cavity, and the driving shaft is assembled and connected with the impeller in the pump cavity.

Optionally, the connection structure comprises a plurality of connection bodies arranged circumferentially around the drive shaft of the motor, the connection bodies extending from one side of the pump housing to one side of the housing of the motor and forming water inlets between adjacent connection bodies, and cutting edges are arranged on the connection bodies.

Optionally, for any connector, cutting edges are respectively arranged on two sides of the connector and are respectively positioned on water inlets on two sides of the connector, and the cutting edges are detachably assembled on the connector.

Optionally, the cutting edge is fastened to the connecting body by a screw.

Optionally, the connection structure comprises a plurality of connection bodies arranged circumferentially around the drive shaft of the motor, the connection bodies extending from one side of the pump housing to one side of the housing of the motor, and forming water inlets between adjacent connection bodies, cutting edges being arranged at the water inlets at the side of the pump housing and/or at the side of the pump housing.

Optionally, the sealing device comprises a mechanical sealing structure fixed on a sealing support and accommodated in the sealing support, an oil cavity is formed in the sealing support and is provided with lubricating oil, and the mechanical sealing structure is arranged in the oil cavity and is surrounded by the lubricating oil in the oil cavity.

Optionally, the pump body and the impeller are of a centrifugal pump structure or an axial flow pump structure.

In the application, the water inlet of the pump body is provided with the cutting edge for cutting foreign matters, the water inlet of the submersible pump generates rapid water flow, so that large-size sundries in water rapidly strike the cutting edge at the water inlet, and the large-size sundries in water are cut off and crushed by the cutting edge, thereby reducing the situation that the water inlet is blocked, protecting the sealing device and related structural parts in the pump body, and prolonging the normal service life of the pump.

Drawings

FIG. 1 is a schematic diagram of a submersible pump according to an embodiment of the application.

FIG. 2 is an exploded view of a submersible pump according to an embodiment of the application.

FIG. 3 is a schematic view of a portion of a submersible pump according to an embodiment of the application.

FIG. 4 is a schematic view of another structure of a submersible pump according to an embodiment of the application.

Reference numerals are a pump body 10, a pump housing 11, a connecting structure 12, a connecting body 121, a pump chamber 13, a water inlet 14, a water outlet 15, a cutting blade 16, an impeller 20, a driving source 30, a casing 31, a driving shaft 32, and a sealing device 40.

Detailed Description

The following are specific embodiments of the present application and the technical solutions of the present application will be further described with reference to the accompanying drawings, but the present application is not limited to these embodiments. In the following description, specific details such as specific configurations and components are provided merely to facilitate a thorough understanding of embodiments of the application. It will therefore be apparent to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the application. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

In addition, the embodiments of the present application and the features of the embodiments may be combined with each other without collision.

It should be understood that submersible pumps are widely used, for example, in the flood prevention and drought resistance operation process, the field situation is complex and severe, and a large amount of sundries may be contained in water, on one hand, with the use of the submersible pump, the water inlet of the submersible pump is easy to accumulate sundries with large size, and the water inlet is blocked by sundries with large size. On the other hand, the sealing device of the submersible pump can be wound and worn due to the fact that large-size hard sundries are wound into the pump body, oil leakage of the sealing device is caused, sealing of the pump is failed, and therefore abnormal damage of the submersible pump is caused. In addition, the large-size hard sundries can also influence the normal operation of the impeller. Therefore, the application provides the submersible pump for solving the problems caused by the large-size sundries in the water.

The application provides a submersible pump which comprises a pump body, an impeller and a driving source, wherein a pump cavity is arranged in the pump body, a water inlet and a water outlet which are communicated with the pump cavity are formed in the pump body, the impeller is accommodated in the pump cavity, a cutting edge for cutting foreign matters is arranged at the water inlet of the pump body, and the driving source is provided with a driving shaft which is in power connection with the impeller and is used for driving the impeller to rotate. Specifically, the driving source can be a motor or a hydraulic motor, and when the driving shaft drives the impeller to rotate, the water inlet rapidly sucks water flow and discharges the water from the water outlet after being pressurized by the impeller. In the working process, the water flow at the water inlet drives the large-size sundries in the water to quickly strike the cutting edge at the water inlet, so that the large-size sundries in the water are cut off and crushed by the cutting edge. In one embodiment of the application, the submersible pump is a centrifugal pump, and the pump body and the impeller are of a centrifugal pump structure. In another embodiment of the application, the submersible pump is an axial flow pump, and the pump body and the impeller are of an axial flow pump structure.

Referring to fig. 1 to 3, in an exemplary submersible pump according to an embodiment of the present application, the submersible pump includes a pump body 10, an impeller 20, and a driving source 30, wherein a pump chamber 13 is provided in the pump body 10, a water inlet 14 and a water outlet 15 communicating with the pump chamber 13 are provided in the pump chamber, the impeller 20 is accommodated in the pump chamber 13, a cutting blade 16 for cutting foreign materials is provided in the water inlet 14 of the pump body 10, and the driving source 30 has a driving shaft which is in power connection with the impeller 20 for driving the impeller 20 to rotate. It should be understood that the submersible pump provided by the present application may have a variety of configurations, and that the configuration shown in fig. 1-3 is a compact pump configuration.

In one embodiment of the application, the cutting edge 16 is a separate component and is removably mounted to the pump body 10. In one embodiment, the cutting edge 16 is attached to the pump body 10 by screws or bolts. The cutting blade is designed into an independent replaceable part, on one hand, the cutting blade is worn with the use of the submersible pump, the sharpness of the cutting blade is reduced, the cutting capability of sundries in water is reduced, large-size sundries in water cannot be cut off and crushed, and the cutting blade is detachably designed, so that the cutting blade can be replaced after being worn, and on the other hand, the independent cutting blade can be made of a material different from the pump body, such as an alloy material with higher hardness, so that the service life of the cutting blade is prolonged.

In one embodiment of the application, the cutting edge is part of the pump body and is a sharp feature on the pump body. Here, directly process sharp structure on the pump body and be used for acting as the cutting edge, compare in independent cutting edge, this structural design simple structure, the cost is lower.

Referring to fig. 1-3, in one embodiment of the present application, the driving source 30 is a motor having a casing 31, the pump body 10 includes a pump housing 11, a connection structure 12, the connection structure 12 is connected between the pump housing 11 and the casing 31 of the motor, the pump chamber 13 is located in the pump housing 11, a sealing device 40 is provided on a driving shaft 32 in the connection structure 12, a plurality of water inlets 14 are arranged on the connection structure 12, the pump housing 11 is provided with an opening on a side facing the connection structure 12, the driving shaft 32 of the motor protrudes to the connection structure 12 side and enters the pump chamber 13 through the connection structure 12 and the opening, and the driving shaft 32 is assembled and connected with the impeller 20 in the pump chamber 13.

In the construction shown in fig. 1-3, the connection 12 is connected between the pump housing 11 and the motor housing 31, the output shaft of the motor extending through the connection 12 into the pump housing 11, and in the pump chamber 13, the drive shaft 32 is fitted and connected with the impeller 20. When the submersible pump works, the impeller 20 is driven to rotate by the driving shaft of the motor, water flows into the connecting structure 12 through the water inlet 14, and the water flows in the connecting structure 12 enter the pump cavity 13 through the opening on the pump housing 11. In this configuration, the water inlet 14 is disposed on the connecting structure 12 and thus the cutting edge is disposed on the connecting structure 12. In one embodiment of the application, the cutting edge 16 is a separate component and is removably mounted to the connecting structure 12. In one embodiment of the application, the cutting edge is part of the pump body and is a sharp feature on the connecting structure 12.

In an embodiment of the application, the connection structure 12 comprises a plurality of connection bodies 121 arranged circumferentially around the drive shaft 32 of the motor, the connection bodies 121 extending from the side of the pump housing 11 to the side of the housing 31 of the motor and forming the water inlet 14 between adjacent connection bodies 121, and the cutting edges 16 being arranged on the connection bodies 121. Further, for any one of the connection bodies 121, a cutting edge 16 is disposed on each of both sides thereof, and the cutting edges 16 on both sides are respectively located at the water inlets 14 on both sides of the connection body 121, and the cutting edge 16 is detachably fitted to the connection body 121.

Referring to fig. 3, a plurality of connection bodies 121 are arranged around the circumference of the driving shaft 32 of the motor, and the number of connection bodies 121 may be 2, 3, 4, 5, 6, 7, 8, 9, 10. A water inlet 14 is formed between each pair of adjacent connectors 121, and cutting edges 16 are disposed on the connectors 121. In one embodiment of the present application, the cutting edge 16 is a separate component and is removably mounted to the connector 121. In this embodiment, the cutting edge 16 is fastened to the connecting body 121 by means of screws. In one embodiment of the application, the cutting edge is part of the pump body, specifically a sharp feature on the connector 121.

Referring to fig. 4, the connection structure 12 includes a plurality of connection bodies 121 arranged around the circumference of the drive shaft 32 of the motor, the connection bodies 121 extending from the pump housing 11 side toward the casing 31 side of the motor, and water inlets 14 formed between the adjacent connection bodies 121, cutting edges being arranged at the water inlets 14 side near the pump housing and/or at the casing side. In fig. 4, an upper side cutting edge 16a is arranged on the side of the water inlet 14 close to the pump housing, and a lower side cutting edge 16b is arranged on the side of the water inlet 14 close to the casing. It should be appreciated that in fig. 4, only the upper and lower cutting edges 16a, 16b are schematically marked with dashed lines.

In one embodiment of the present application, the sealing device 40 includes a mechanical seal structure fixed to the seal holder and accommodated in the seal holder, an oil chamber formed inside the seal holder and having lubricating oil therein, and the mechanical seal structure is disposed in the oil chamber and surrounded by the lubricating oil in the oil chamber. Further, the mechanical seal is specifically a double-end mechanical seal, two ends of the mechanical seal are respectively provided with a set of friction pairs, lubricating oil is injected into the seal support, and the mechanical seal can be lubricated, so that the sealing effect of the mechanical seal is enhanced. In particular, the sealing support is provided with a smooth profile on the side close to the impeller to act as a part of the side wall of the water inlet channel. By the arrangement, the appearance structure of the sealing support is fully utilized, the sealing support and the connecting structure 12 are combined together to form a water inlet channel, and the structure is more compact.

It should be appreciated that the pump body may have a variety of configurations and may be structurally divided as desired, for example, in the configuration shown in fig. 1-3, the pump body 10 may comprise a plurality of sections, at least into a pump housing 11 and a connecting structure 12, each of which may be bolted, easily removed for maintenance, and replaced after damage. In the submersible pump structure shown in fig. 1-3, the impeller is directly arranged on the driving shaft of the motor, and the structure is compact. In other submersible pump constructions, a separate pump shaft is inserted into the pump body, with the drive shaft being connected to the pump shaft.

In addition, the submersible pump according to the present application may be any of various types of submersible pumps, and in one embodiment of the present application, the submersible pump is a centrifugal pump, and the pump body and the impeller are of a centrifugal pump structure. Specifically, the centrifugal pump is operated by utilizing the centrifugal motion of water generated by the rotation of the impeller, before the centrifugal pump is started, the pump cavity is filled with water, after the motor is started, the impeller drives the water to do high-speed rotation motion, the water generates centrifugal motion, and the water is thrown to the outer edge of the impeller to be discharged. In another embodiment of the application, the submersible pump is an axial flow pump, and the pump body and the impeller are of an axial flow pump structure. In the axial flow pump, when the motor drives the impeller to rotate, the blades of the impeller and the axis of the pump shaft have a certain spiral angle, so that thrust is generated on the liquid, the liquid is pushed out, and is discharged along the discharge pipe, after the liquid is pushed out, the original position forms partial vacuum, and external water is sucked into the impeller under the action of atmospheric pressure.

In the embodiment of the application, the water inlet of the pump body is provided with the cutting edge for cutting foreign matters, the water inlet of the submersible pump generates rapid water flow, so that large-size sundries in water rapidly strike the cutting edge at the water inlet, and the large-size sundries in water are cut off and crushed by the cutting edge, thereby reducing the situation that the water inlet is blocked, protecting the sealing device and related structural parts in the pump body, and prolonging the normal service life of the pump.

In the foregoing embodiments of the present application, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the application. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the application or exceeding the scope of the application as defined in the accompanying claims.

Claims (10)

1. A submersible pump is characterized by comprising a pump body, an impeller and a driving source, wherein a pump cavity is arranged in the pump body, a water inlet and a water outlet which are communicated with the pump cavity are formed in the pump body, the impeller is accommodated in the pump cavity, a cutting edge for cutting foreign matters is arranged at the water inlet of the pump body, and the driving source is provided with a driving shaft which is in power connection with the impeller and is used for driving the impeller to rotate.

2. The submersible pump of claim 1, wherein the cutting edge is a separate component and is removably mounted to the pump body.

3. The submersible pump of claim 1, wherein the cutting edge is a portion of the pump body that is a sharp feature on the pump body.

4. The submersible pump of claim 1, wherein the drive source is a motor having a housing, the pump body comprises a pump housing, a connecting structure connected between the pump housing and the housing of the motor, the pump cavity is located in the pump housing, a sealing device is arranged on the drive shaft in the connecting structure, and a plurality of water inlets are arranged on the connecting structure;

the pump housing is provided with an opening at one side facing the connecting structure, the driving shaft of the motor extends out from one side of the connecting structure and passes through the connecting structure and the opening to enter the pump cavity, and the driving shaft is assembled and connected with the impeller in the pump cavity.

5. The submersible pump of claim 4, wherein the connection structure comprises a plurality of connection bodies arranged circumferentially around the drive shaft of the motor, the connection bodies extending from one side of the pump housing to one side of the housing of the motor and forming water inlets between adjacent connection bodies, and cutting edges are arranged on the connection bodies.

6. The submersible pump of claim 5, wherein for any one of the connectors, a cutting edge is disposed on each side thereof, and the cutting edges on each side are located at the water inlets on each side of the connector, and wherein the cutting edges are detachably mounted to the connector.

7. The submersible pump of claim 6, wherein the cutting edge is attached to the connector by screw fastening.

8. The submersible pump of claim 4, wherein the connection structure comprises a plurality of connection bodies arranged circumferentially around the drive shaft of the motor, the connection bodies extending from one side of the pump housing to one side of the housing of the motor, and forming water inlets between adjacent connection bodies, cutting edges being arranged at the water inlets at the side of the pump housing and/or at the side of the pump housing.

9. The submersible pump of claim 4, wherein the sealing means comprises a mechanical seal structure secured to a seal carrier and received within the seal carrier, an oil cavity formed within the seal carrier and having lubricating oil therein, and the mechanical seal structure disposed within and surrounded by the lubricating oil within the oil cavity.

10. The submersible pump of claim 1, wherein the pump body and the impeller are of a centrifugal pump configuration or an axial flow pump configuration.