Double-shaft-extension submersible electric pump

Abstract

The utility model provides a double-shaft-extension submersible electric pump, which relates to the technical field of water pumps and comprises a motor, a first hydraulic component and a second hydraulic component. The motor comprises a motor main body, and a first driving shaft end and a second driving shaft end which respectively extend out of two sides of the motor main body; the first hydraulic assembly comprises a first flow guide shell fixed to the first side of the motor body and a first impeller contained in the first flow guide shell and in power connection with the first driving shaft end. A first water inlet and a first water outlet are formed in the first flow guide shell; the second hydraulic assembly comprises a second flow guide shell fixed to the second side of the motor body and a second impeller contained in the second flow guide shell and in power connection with the second driving shaft end. And a second water inlet and a second water outlet are formed in the second flow guide shell. Under the condition of the same displacement, the double-shaft-extension submersible electric pump can reduce the flow of a single side, improve the cavitation performance, increase the allowable design rotating speed and reduce the size and the weight.

Description

Technical Field

[0001] This application relates to the technical field of water pumps, and particularly to a submersible motor pump with double extended shafts. Background Art

[0002] As a water supply and drainage tool, submersible motor pumps are widely used in daily life. In recent years, especially portable large-flow submersible motor pumps play an important role in flood control and drought relief due to their small weight and large displacement. During flood control and drought relief operations, the on-site situation is complex and harsh. To ensure the effectiveness of the rescue, the water pump is required to have a sufficiently large displacement; to ensure the mobility of the rescue, the equipment is required to be light in weight. Traditional submersible motor pumps generally adopt a single extended shaft design method, which has the following disadvantages: On the one hand, the large-flow drainage pump has a low speed, and the hydraulic and motor components are large in volume and heavy in weight. On the other hand, the axial force is unbalanced, the bearing load is large, the equipment has large unbalanced vibration, low service life, and requires a special bearing design, and the weight of the casing is large. The unidirectional unbalanced axial force will affect the end cover seal of the casing. On the third hand, the outlet unidirectional water thrust of the large-flow drainage pump is large, the anchoring load is large, and it is easy to break away. Summary of the Utility Model

[0003] The technical problem to be solved by this application is to provide a submersible motor pump with double extended shafts in view of the above deficiencies of the prior art.

[0004] A submersible motor pump with double extended shafts includes: a motor, a first hydraulic component, and a second hydraulic component; the motor includes a motor main body, and a first drive shaft end and a second drive shaft end respectively extending from both sides of the motor main body; wherein, the first drive shaft end is located on the first side of the motor main body, and the second drive shaft end is located on the second side of the motor main body;

[0005] The first hydraulic component is arranged on the first side of the motor main body; the first hydraulic component includes a first guide housing fixed on the first side of the motor main body, and a first impeller accommodated in the first guide housing and power-connected to the first drive shaft end; the first guide housing is provided with a first water inlet and a first water outlet;

[0006] The second hydraulic component is arranged on the second side of the motor main body; the second hydraulic component includes a second guide housing fixed on the second side of the motor main body, and a second impeller accommodated in the second guide housing and power-connected to the second drive shaft end; the second guide housing is provided with a second water inlet and a second water outlet.

[0007] Optionally, both the first water outlet and the second water outlet are axial water outlets, and the water outlet directions are opposite to each other.

[0008] Optionally, the first flow guiding housing is detachably mounted on the first side of the motor body; the second flow guiding housing is detachably mounted on the second side of the motor body; both the first impeller and the second impeller are detachably mounted.

[0009] Optionally, the first impeller is directly mounted on the first drive shaft end, and the second impeller is directly mounted on the second drive shaft end.

[0010] Optionally, the first hydraulic assembly is an axial flow pump hydraulic assembly; for the first hydraulic assembly, the first flow guiding housing includes a first connection seat, a first impeller chamber, and a first fairing; the first impeller is located in the first impeller chamber; the first connection seat is located on the side of the first impeller chamber close to the motor body, and the first fairing is located on the side of the first impeller chamber far from the motor body; the first connection seat is detachably connected to the motor body, and a first water inlet channel is provided thereon; a first water outlet channel is provided on the first fairing;

[0011] The second hydraulic assembly is an axial flow pump hydraulic assembly; for the second hydraulic assembly, the second flow guiding housing includes a second connection seat, a second impeller chamber, and a second fairing; the second impeller is located in the second impeller chamber; the second connection seat is located on the side of the second impeller chamber close to the motor body, and the second fairing is located on the side of the second impeller chamber far from the motor body; the second connection seat is detachably connected to the motor body, and a second water inlet channel is provided thereon; a second water outlet channel is provided on the second fairing.

[0012] Optionally, for the first hydraulic assembly, the first impeller chamber is detachably connected to the first connection seat; the first impeller chamber is detachably connected to the first fairing;

[0013] For the second hydraulic assembly, the second impeller chamber is detachably connected to the second connection seat; the second impeller chamber is detachably connected to the second fairing.

[0014] Optionally, a first sealing structure is provided on the first side of the motor body, and the first sealing structure is located within the first connection seat; a second sealing structure is provided on the second side of the motor body, and the second sealing structure is located within the second connection seat.

[0015] Optionally, both the first sealing structure and the second sealing structure are double-ended mechanical sealing structures.

[0016] Optionally, both the first hydraulic assembly and the second hydraulic assembly are centrifugal pump hydraulic assemblies.

[0017] Optionally, the first hydraulic component and the second hydraulic component are hydraulic components of the same specification.

[0018] The present application provides a double-shaft extended submersible motor pump, including: a motor, a first hydraulic component, and a second hydraulic component; the first hydraulic component is arranged on the first side of the motor main body; the second hydraulic component is arranged on the second side of the motor main body. The double-shaft extended submersible motor pump provided by the present application has the following technical effects: First, double-sided water inlet increases the water inlet area, improves the water inlet cavitation performance, and increases the total flow rate. Second, in the case of the same drainage volume, the double-shaft extended submersible motor pump can reduce the flow rate on one side, improve the cavitation performance, allow a higher design speed, and can reduce the volume and weight. Third, the design of the present application can reduce the unidirectional unbalanced axial force, reduce the bearing load, and improve the service life of the pump. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of a double-shaft extended submersible motor pump in an embodiment of the present application.

[0020] Figure 2 is another schematic structural diagram of a double-shaft extended submersible motor pump in an embodiment of the present application.

[0021] Reference numerals: motor 10, motor main body 11, first drive shaft end 12, second drive shaft end 13, first hydraulic component 20, first guide housing 21, first impeller 22, first water inlet 23, first water outlet 24, first connection seat 25, first impeller chamber 26, first fairing 27, second hydraulic component 30; second guide housing 31, second impeller 32, second water inlet 33, second water outlet 34, second connection seat 35, second impeller chamber 36, second fairing 37, first sealing structure 40a, second sealing structure 40b. Detailed Embodiments

[0022] The following are specific embodiments of the present application in combination with the drawings, and the technical solutions of the present application will be further described, but the present application is not limited to these embodiments. In the following description, providing specific details such as specific configurations and components is only to help a comprehensive understanding of the embodiments of the present application. Therefore, those skilled in the art should clearly understand that various changes and modifications can be made to the embodiments described here without departing from the scope and spirit of the present application. In addition, for clarity and conciseness, the description of known functions and structures is omitted.

[0023] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0024] Refer to Figure 1, the double-shaft extended submersible motor pump includes: a motor 10, a first hydraulic assembly 20, and a second hydraulic assembly 30; the motor 10 includes a motor main body 11, and a first drive shaft end 12 and a second drive shaft end 13 that extend out of both sides of the motor main body 11 respectively; wherein, the first drive shaft end 12 is located on the first side A of the motor main body 11, and the second drive shaft end 13 is located on the second side B of the motor main body 11. The first hydraulic assembly 20 is arranged on the first side of the motor main body 11; the second hydraulic assembly 30 is arranged on the second side of the motor main body 11. The output shaft of the motor 10 forms the first drive shaft end 12 and the second drive shaft end 13 at both ends of the motor main body 11 respectively, and the first drive shaft end 12 and the second drive shaft end 13 rotate coaxially. The first drive shaft end 12 is used to drive the first hydraulic assembly 20 to work, and the second drive shaft end 13 is used to drive the second hydraulic assembly 30 to work. In a technical solution of the present application, the first hydraulic assembly 20 and the second hydraulic assembly are hydraulic assemblies of the same specification.

[0025] Specifically, the first hydraulic assembly 20 is arranged on the first side of the motor main body 11; the first hydraulic assembly 20 includes a first guide housing 21 and a first impeller 22, wherein, the first guide housing 21 is fixed to the first side of the motor main body 11, and the first impeller 22 is accommodated within the first guide housing 21 and is power-connected to the first drive shaft end 12; the first guide housing 21 is provided with a first water inlet 23 and a first water outlet 24. When the first drive shaft end 12 rotates, the first impeller 22 rotates in the first guide housing 21 accordingly, the first water inlet 23 sucks in water flow, and after being pressurized by the first impeller 22, it is discharged. The second hydraulic assembly 30 is arranged on the second side of the motor main body 11; the second hydraulic assembly 30 includes a second guide housing 31 and a second impeller 32, the second guide housing 31 is fixed to the second side of the motor main body 11, and the second impeller 32 is accommodated within the second guide housing 31 and is power-connected to the second drive shaft end 13; the second guide housing 31 is provided with a second water inlet 33 and a second water outlet 34. When the second drive shaft end 13 rotates, the second impeller 32 rotates in the second guide housing 31 accordingly, the second water inlet 33 sucks in water flow, and after being pressurized by the second impeller 32, it is output. Thus, by adopting the first hydraulic assembly 20 and the second hydraulic assembly 30 for double-sided water inlet, the water inlet area is increased, the water inlet cavitation performance is improved, and the total flow rate is increased. And, under the condition of the same drainage volume, the double-shaft extended submersible motor pump can reduce the flow rate on one side, improve the cavitation performance, allow a higher designed rotational speed, and can reduce the volume and weight. In addition, in the above design, the first drive shaft end 12 and the second drive shaft end 13 are arranged at both ends of the drive shaft to simultaneously drive the first hydraulic assembly 20 and the second hydraulic assembly 30 on both sides to work, which can reduce the unidirectional unbalanced axial force of the motor drive shaft, reduce the load on the bearing, and can improve the service life of the pump.

[0026] In an embodiment of the present application, both the first water outlet 23 and the second water outlet 24 are axial water outlets, and the water outlet directions are opposite to each other. Under this structural arrangement, when the double-shaft extension submersible motor pump is working, the first drive shaft end 12 and the second drive shaft end 13 are arranged at both ends of the motor main body 11 to simultaneously drive the first hydraulic assembly 20 and the second hydraulic assembly 30 on both sides to work. The first water outlet 23 and the second water outlet 24 simultaneously output the pressurized water flow in the opposite direction, and the outlet thrusts on both sides can balance each other, reducing the anchoring load. In some technical solutions, when the first hydraulic assembly 20 and the second hydraulic assembly 30 are designed with the same specifications, the drainage reaction thrusts at the first water outlet 23 and the second water outlet 24 are approximately the same, and can be basically offset.

[0027] In an embodiment of the present application, the first guide housing 21 is detachably installed on the first side of the motor main body 11; the second guide housing 31 is detachably installed on the second side of the motor main body 11; both the first impeller 22 and the second impeller 32 are detachably installed.

[0028] Specifically, the first hydraulic assembly 20 is arranged on the first side of the motor main body 11, including the first guide housing 21 and the first impeller 22, and both are detachable, enabling the overall replacement of the first hydraulic assembly 20. The second hydraulic assembly 30 is arranged on the second side of the motor main body 11, including the second guide housing 31 and the second impeller 32, and both are detachable, enabling the overall replacement of the second hydraulic assembly 30.

[0029] The first impeller 22 is power-connected to the first drive shaft end 12, and the second impeller 32 is power-connected to the second drive shaft end 13. The power connection here can be a direct connection for power transmission, or other components can be provided to achieve power transmission. In an embodiment of the present application, the first impeller 22 is directly installed on the first drive shaft end 12, and the second impeller 32 is directly installed on the second drive shaft end 13.

[0030] Reference Figure 2, in an embodiment of the present application, the first hydraulic assembly 20 is an axial flow pump hydraulic assembly; for the first hydraulic assembly 20, the first guide housing 21 includes a first connection seat 25, a first impeller chamber 26, and a first fairing 27; the first impeller 22 is located in the first impeller chamber 26; the first connection seat 25 is located on the side of the first impeller chamber 26 close to the motor main body 11, and the first fairing 27 is located on the side of the first impeller chamber 26 far from the motor main body 11; the first connection seat 25 is detachably connected to the motor main body 11, and a first water inlet channel is provided thereon; a first water outlet channel is provided on the first fairing 27. Specifically, one end of the first connection seat 25 is detachably connected to the motor main body 11, the other end of the first connection seat 25 is connected to the first impeller chamber 26, and the other end of the first impeller chamber 26 is connected to the first fairing 27. When the first drive shaft end 12 rotates, water flows in from the first water inlet channel on the first connection seat 25, passes through the first impeller chamber 26, and then enters the first water outlet channel of the first fairing 27. Further, for the first hydraulic assembly 20, the first impeller chamber 26 is detachably connected to the first connection seat 25; the first impeller chamber 26 is detachably connected to the first fairing 27; since the first impeller chamber 26 is a vulnerable part under certain harsh working conditions, the above-mentioned detachable connection enables the first impeller chamber 26 to be replaced separately, thus reducing the later maintenance cost.

[0031] Reference Figure 2 , in an embodiment of the present application, the second hydraulic assembly 30 is an axial flow pump hydraulic assembly; for the second hydraulic assembly 30, the second guide housing 31 includes a second connection seat 35, a second impeller chamber 36, and a second fairing 37; the second impeller is located in the second impeller chamber 36; the second connection seat 35 is located on the side of the second impeller chamber 36 close to the motor main body 11, and the second fairing 37 is located on the side of the second impeller chamber 36 far from the motor main body 11; the second connection seat 35 is detachably connected to the motor main body 11, and a second water inlet channel is provided thereon; a second water outlet channel is provided on the second fairing 37. Specifically, one end of the second connection seat 25 is detachably connected to the motor main body 11, the other end of the second connection seat 25 is connected to the second impeller chamber 26, and the other end of the second impeller chamber 26 is connected to the second fairing 27. When the second drive shaft end 12 rotates, water flows in from the second water inlet channel on the second connection seat 25, passes through the second impeller chamber 26, and then enters the second water outlet channel of the second fairing 27. Further, for the second hydraulic assembly 30, the second impeller chamber 36 is detachably connected to the second connection seat 35; the second impeller chamber 36 is detachably connected to the second fairing 37. Since the second impeller chamber 36 is a vulnerable part under certain harsh working conditions, the above-mentioned detachable connection enables the second impeller chamber 36 to be replaced separately, thus reducing the later maintenance cost.

[0032] Reference Figure 2, a first sealing structure 40a is provided on the first side of the motor main body 11, and the first sealing structure 40a is located within the first connection seat 25; a second sealing structure 40b is provided on the second side of the motor main body 11, and the second sealing structure 40b is located within the second connection seat 35. The first sealing structure 40a within the first connection seat 25 is used for sealing the first side of the motor main body 11 to prevent water flow from entering the motor main body 11. The second sealing structure 40b within the second connection seat 35 is used for sealing the second side of the motor main body 11 to prevent water flow from entering the motor main body 11. In a specific technical solution, both the first sealing structure 40a and the second sealing structure 40b are double-ended mechanical sealing structures.

[0033] In addition, in an embodiment of the present application, both the first hydraulic assembly 20 and the second hydraulic assembly 30 are centrifugal pump hydraulic assemblies. Here, the structures of both the first impeller 22 and the second impeller 32 adopt the impeller structures of centrifugal pumps.

[0034] The present application provides a double-shaft extension submersible motor pump, comprising: a motor, a first hydraulic assembly, and a second hydraulic assembly; the first hydraulic assembly is arranged on the first side of the motor main body; the second hydraulic assembly is arranged on the second side of the motor main body. The double-shaft extension submersible motor pump adopts double-sided water inlet to increase the water inlet area, improve the water inlet cavitation performance, and increase the total flow rate. Under the condition of the same drainage volume, the double-shaft extension submersible motor pump can reduce the flow rate on one side, improve the cavitation performance, allow a higher designed rotational speed, and can reduce the volume and weight. The first drive shaft end and the second drive shaft end are arranged at both ends of the drive shaft to simultaneously drive the first hydraulic assembly and the second hydraulic assembly on both sides to work, which can reduce the unidirectional unbalanced axial force of the motor drive shaft, reduce the load on the bearings, and improve the service life of the pump. Additionally, in an embodiment of the present application, both the first water outlet and the second water outlet are axial water outlets, and the water outlet directions are opposite to each other. Under this structural arrangement, when the double-shaft extension submersible motor pump is working, the first drive shaft end and the second drive shaft end are arranged at both ends of the motor main body to simultaneously drive the first hydraulic assembly and the second hydraulic assembly on both sides to work. The first water outlet and the second water outlet simultaneously output the pressurized water flow in the reverse direction, and the outlet thrusts on both sides can balance each other, reducing the anchoring load.

[0035] In the above embodiments of the present application, the descriptions of each embodiment have their own focuses. For parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined. It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly dictates otherwise, the singular form is also intended to include the plural form. Additionally, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0037] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art to which the present application pertains may make various modifications or supplements to the described specific embodiments or use similar means to replace them, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

Claims

1. A double-shaft extension submersible motor pump, characterized in that, Comprising: A motor, a first hydraulic component, and a second hydraulic component; the motor includes a motor body, a first drive shaft end and a second drive shaft end respectively extending out from both sides of the motor body; wherein, the first drive shaft end is located on the first side of the motor body, and the second drive shaft end is located on the second side of the motor body; The first hydraulic component is arranged on the first side of the motor body; the first hydraulic component includes a first guide housing fixed to the first side of the motor body, and a first impeller accommodated within the first guide housing and power-connected to the first drive shaft end; the first guide housing is provided with a first water inlet and a first water outlet; The second hydraulic component is arranged on the second side of the motor body; the second hydraulic component includes a second guide housing fixed to the second side of the motor body, and a second impeller accommodated within the second guide housing and power-connected to the second drive shaft end; the second guide housing is provided with a second water inlet and a second water outlet.

2. The double-shaft extended submersible motor pump according to claim 1, wherein, Both the first water outlet and the second water outlet are axial water outlets, and the water outlet directions are opposite to each other.

3. The submersible motor pump with double extended shafts according to claim 1, wherein, The first guide housing is installed on the first side of the motor body in a detachable manner; the second guide housing is installed on the second side of the motor body in a detachable manner; both the first impeller and the second impeller are installed in a detachable manner.

4. The double-shaft extended submersible motor pump according to claim 1, characterized in that, The first impeller is directly installed on the first drive shaft end, and the second impeller is directly installed on the second drive shaft end.

5. The double-shaft extension submersible motor pump according to claim 3, characterized in that The first hydraulic component is an axial flow pump hydraulic component; for the first hydraulic component, the first guide housing includes a first connection seat, a first impeller chamber, and a first fairing; the first impeller is located within the first impeller chamber; the first connection seat is located on the side of the first impeller chamber close to the motor body, and the first fairing is located on the side of the first impeller chamber far from the motor body; the first connection seat is detachably connected to the motor body, and is provided with a first water inlet channel thereon; the first fairing is provided with a first water outlet channel. The second hydraulic component is an axial flow pump hydraulic component; for the second hydraulic component, the second guide housing includes a second connection seat, a second impeller chamber, and a second fairing; the second impeller is located within the second impeller chamber; the second connection seat is located on the side of the second impeller chamber close to the motor body, and the second fairing is located on the side of the second impeller chamber far from the motor body; the second connection seat is detachably connected to the motor body, and is provided with a second water inlet channel thereon; the second fairing is provided with a second water outlet channel.

6. The double-shaft extension submersible motor pump according to claim 5, characterized in that, For the first hydraulic component, the first impeller chamber is detachably connected to the first connection seat; the first impeller chamber is detachably connected to the first fairing; For the second hydraulic component, the second impeller chamber is detachably connected to the second connection seat; the second impeller chamber is detachably connected to the second fairing.

7. The double-shaft extension submersible motor pump according to claim 5, wherein, A first sealing structure is provided on the first side of the motor body, and the first sealing structure is located within the first coupling seat; a second sealing structure is provided on the second side of the motor body, and the second sealing structure is located within the second coupling seat.

8. The double-shaft extension submersible motor pump according to claim 7, characterized in that, Both the first sealing structure and the second sealing structure are double-ended mechanical sealing structures.

9. The submersible motor pump with double extended shafts according to claim 1, characterized in that, Both the first hydraulic assembly and the second hydraulic assembly are centrifugal pump hydraulic assemblies.

10. The submersible motor pump with double extended shafts according to claim 1, characterized in that, The first hydraulic assembly and the second hydraulic assembly are hydraulic assemblies of the same specification.

Images