Guide vane type water pump adopting double-output-shaft motor

Abstract

The utility model provides a guide vane type water pump adopting a double-output-shaft motor, and belongs to the technical field of water pump instruments. The problem that the axial force load of an existing motor shaft is large is solved. The guide vane type water pump adopting the double-output-shaft motor comprises a centrifugal pump body and the motor, a sealing cavity used for containing the motor is formed in the centrifugal pump body, the motor is provided with a first output shaft and a second output shaft, and the first output shaft and the second output shaft are opposite in direction. The centrifugal pump body is provided with a water inlet, a water outlet, a first impeller set and a second impeller set, the first impeller set is arranged on the first output shaft, the second impeller set is arranged on the second output shaft, the first impeller set is used for guiding liquid at the water inlet to the second impeller set, and the second impeller set is used for guiding the liquid from the first impeller set to the water outlet. The utility model has the advantage of solving the axial force problem of the output shaft of the water pump motor.

Description

Technical Field

[0001] This utility model belongs to the field of water pump equipment technology, and specifically relates to a guide vane water pump using a dual-output shaft motor. Background Technology

[0002] Centrifugal pumps transport liquids by generating centrifugal force through impeller rotation, and are suitable for various fluid transport needs. Single-stage centrifugal pumps have a simple structure and are suitable for low-head applications; while multi-stage centrifugal pumps, through multiple impellers connected in series, can achieve high head and large flow rate, while maintaining high efficiency and a wide operating range. Multi-stage centrifugal pumps have a compact design, strong adaptability, and are widely used in high-rise water supply, industrial processes, and fire protection systems.

[0003] Axial force is a crucial research topic in the field of centrifugal pumps, as imbalances in axial force can lead to serious consequences such as accelerated bearing wear, thus affecting the normal operation of the pump. During pump operation, an axial force acts on the rotor, causing it to move axially. Therefore, it is essential to eliminate or balance this axial force to ensure the pump functions properly. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the prior art by providing a guide vane water pump employing a dual-output shaft motor.

[0005] The objective of this utility model can be achieved through the following technical solution: A guide vane water pump using a dual-output shaft motor, comprising a centrifugal pump body and a motor, wherein the centrifugal pump body is provided with a sealed cavity for accommodating the motor, the motor is provided with a first output shaft and a second output shaft, the first output shaft and the second output shaft being in opposite directions, the centrifugal pump body being provided with an inlet, an outlet, a first impeller assembly and a second impeller assembly, the first impeller assembly being disposed on the first output shaft, the second impeller assembly being disposed on the second output shaft, the first impeller assembly being used to guide the liquid at the inlet to the second impeller assembly, and the second impeller assembly being used to guide the liquid from the first impeller assembly to the outlet.

[0006] The working principle of this utility model is as follows: Liquid enters the centrifugal pump body from the inlet. The first impeller group rotates, which transports the liquid to the second impeller group. At the same time, the second impeller group rotates, which transports the liquid from the first impeller group to the outlet. This application uses a dual-shaft motor and sets opposite impeller groups on the first and second output shafts, thereby offsetting the axial force and achieving a pressurization effect. In addition, this design reduces the length of a single motor output shaft and reduces the pressure on the motor output shaft.

[0007] In the aforementioned guide vane water pump employing a dual-output shaft motor, both the first impeller assembly and the second impeller assembly are equipped with at least one impeller.

[0008] In the aforementioned guide vane water pump employing a dual-output-shaft motor, both the impellers of the first impeller assembly and the second impeller assembly are composed of guide vane impellers.

[0009] In the aforementioned guide vane water pump employing a dual-output shaft motor, the centrifugal pump body includes a first pump cover, a second pump cover, a first pump casing, and a second pump casing. The first pump cover is used to seal the first pump casing, and the second pump cover is used to seal the second pump casing. The first pump casing is used for mounting the motor and the first impeller assembly, and the second pump casing is used for mounting the second impeller assembly.

[0010] In the aforementioned guide vane water pump employing a dual-output shaft motor, the inlet is located on the first pump cover, the outlet is located on the side wall of the second pump casing, and the outlet is located near the end of the first pump casing.

[0011] In the aforementioned guide vane water pump employing a dual-output shaft motor, a first water flow channel is formed between the sealing cavity and the first pump casing. Multiple connecting columns are provided within the first water flow channel. The second impeller assembly, together with the second pump casing and the second pump cover, forms a second water flow channel. The first water flow channel connects to the second water flow channel. The first water flow channel is used to direct liquid located in the first impeller assembly to the second water flow channel, and the second water flow channel is used to direct water to the second impeller assembly.

[0012] In the aforementioned guide vane water pump employing a dual-output shaft motor, the second pump casing is provided with a support block for supporting the second impeller assembly. The support column is provided with multiple through holes, which are used to connect the first water flow channel and the second water flow channel.

[0013] In the aforementioned guide vane water pump employing a dual-output shaft motor, a connecting pipe is also provided on the support block, which is used to connect the second impeller assembly and the outlet.

[0014] Compared with the prior art, this utility model has the advantage of solving the problem of axial force on the output shaft of a water pump motor. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the multi-stage guide vane impeller of this utility model.

[0016] Figure 2 This is a cross-sectional structural diagram of the multi-stage guide vane impeller of this utility model.

[0017] Figure 3 This is a cross-sectional structural diagram of the single-stage guide vane impeller of this utility model.

[0018] Figure 4 This is a schematic diagram of the structure of the first pump casing of this utility model.

[0019] Figure 5 This is a schematic diagram of the structure of the second pump casing of this utility model.

[0020] In the diagram, 1. Centrifugal pump body; 2. Motor; 3. Sealing cavity; 4. First output shaft; 5. Second output shaft; 6. Inlet; 7. Outlet; 8. First impeller assembly; 9. Second impeller assembly; 10. Guide vane impeller; 12. First pump cover; 13. Second pump cover; 14. First pump casing; 15. Second pump casing; 16. First water flow channel; 17. Second water flow channel; 18. Connecting column; 19. Support block; 20. Through hole; 21. Connecting pipe. Detailed Implementation

[0021] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0022] like Figures 1-5 As shown, this guide vane water pump with a dual-output shaft motor includes a centrifugal pump body 1 and a motor 2. The centrifugal pump body is provided with a sealed cavity 3 for accommodating the motor 2. The motor 2 is provided with a first output shaft 4 and a second output shaft 5, which are in opposite directions. The centrifugal pump body 1 is provided with an inlet 6, an outlet 7, a first impeller group 8, and a second impeller group 9. The first impeller group 8 is located on the first output shaft 4, and the second impeller group 9 is located on the second output shaft 5. The first impeller group 8 is used to guide the liquid at the inlet 6 to the second impeller group 9, and the second impeller group 9 is used to guide the liquid from the first impeller group 8 to the outlet 7.

[0023] To elaborate further, both the first impeller group 8 and the second impeller group 9 are equipped with at least one impeller. The number of impellers in the first impeller group 8 and the second impeller group 9 is the same, which is used to ensure that the axial forces at both ends can cancel each other out. At the same time, setting multiple impellers can improve the head capacity and improve efficiency.

[0024] To elaborate further, both the first impeller group 8 and the second impeller group 9 are composed of guide vane impellers 10. The guide vane impellers 10 are suitable for low head and high flow rate applications, such as drainage and cooling water circulation, and also have energy-saving advantages.

[0025] To elaborate further, the centrifugal pump body 1 includes a first pump cover 12, a second pump cover 13, a first pump housing 14, and a second pump housing 15. The first pump cover 12 is used to seal the first pump housing 14, the second pump cover 13 is used to seal the second pump housing 15, the first pump housing 14 is used for mounting the power supply motor 2 and the first impeller assembly 8, and the second pump housing 15 is used for mounting the second impeller assembly 9.

[0026] To elaborate further, the inlet 6 is located on the first pump cover 12, and the outlet 7 is located on the side wall of the second pump casing 15. The outlet 7 is located at the end closer to the first pump casing 14. Since the first impeller group 8 and the second impeller group 9 are arranged opposite to each other, the output port of the second impeller group 9 is located at the end closer to the sealing cavity 3.

[0027] To elaborate further, a first water flow channel 16 is formed between the sealing cavity 3 and the first pump casing 14. Multiple connecting posts 18 are installed within the first water flow channel 16. The second impeller assembly 9, together with the second pump casing 15 and the second pump cover 13, forms a second water flow channel 17. The first water flow channel 16 connects to the second water flow channel 17. The first water flow channel 16 directs the liquid from the first impeller assembly 8 to the second water flow channel 17. The second water flow channel 17 directs the water to the second impeller assembly 9. The liquid enters the first impeller assembly 8 from the inlet 6 and, under the action of the first impeller assembly 8, enters the first water flow channel 16, then the second water flow channel 17, and finally enters the second impeller assembly 9 from the second casing cover. Under the action of the second impeller assembly 9, the liquid exits from the outlet 7. Because the first water flow channel 16 passes through the sealing cavity 3 of the motor 2, it carries away the heat from the sealing cavity 3, thus cooling the sealing cavity 3 and preventing the motor 2 from operating at high temperatures for extended periods.

[0028] To elaborate further, the second pump casing 15 is provided with a support block 19 for supporting the second impeller assembly 9. The support column is provided with multiple through holes 20, which are used to connect the first water flow channel 16 and the second water flow channel 17. The support block 19 provides support for the second impeller assembly 9 without affecting the first water flow channel 16 and the drip water flow channel.

[0029] To elaborate further, the support block 19 is also provided with a connecting pipe 21, which is used to connect the second impeller group 9 and the outlet 7. Since the first impeller group 8 and the second impeller group 9 are arranged in opposite directions, the outlet of the second impeller group 9 is located near the sealing cavity 3. Therefore, it is necessary to provide a connecting pipe 21 so that it does not affect the second water flow channel 17.

[0030] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0031] Although this document uses a large number of technical terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. A guide vane type water pump employing a dual-output shaft motor, characterized in that, The system includes a centrifugal pump body (1) and a motor (2). The centrifugal pump body (1) is provided with a sealed cavity (3) for accommodating the motor (2). The motor (2) is provided with a first output shaft (4) and a second output shaft (5). The first output shaft (4) and the second output shaft (5) are in opposite directions. The centrifugal pump body (1) is provided with an inlet (6), an outlet (7), a first impeller assembly (8), and a second impeller assembly (9). The first impeller assembly (8) is located on the first output shaft (4), and the second impeller assembly (9) is located on the second output shaft (5). The first impeller assembly (8) is used to guide the liquid at the inlet (6) to the second impeller assembly (9), and the second impeller assembly (9) is used to guide the liquid from the first impeller assembly (8) to the outlet (7).

2. A guide vane water pump employing a dual-output shaft motor according to claim 1, characterized in that, The first impeller group (8) and the second impeller group (9) are each provided with at least one impeller.

3. A guide vane water pump employing a dual-output shaft motor according to claim 2, characterized in that, The impellers of the first impeller group (8) and the second impeller group (9) are both composed of guide vane impellers (10).

4. A guide vane water pump employing a dual-output shaft motor according to claim 1, characterized in that, The centrifugal pump body (1) includes a first pump cover (12), a second pump cover (13), a first pump housing (14), and a second pump housing (15). The first pump cover (12) is used to seal the first pump housing (14), and the second pump cover (13) is used to seal the second pump housing (15). The first pump housing (14) is used to install the motor (2) and the first impeller assembly (8), and the second pump housing (15) is used to install the second impeller assembly (9).

5. A guide vane water pump employing a dual-output shaft motor according to claim 4, characterized in that, The inlet (6) is located on the first pump cover (12), and the outlet (7) is located on the side wall of the second pump housing (15), with the outlet (7) located near the end of the first pump housing (14).

6. A guide vane water pump employing a dual-output shaft motor according to claim 4, characterized in that, A first water flow channel (16) is formed between the sealing cavity (3) and the first pump casing (14). A plurality of connecting columns (18) are provided in the first water flow channel (16). The second impeller assembly (9), the second pump casing (15), and the second pump cover (13) cooperate to form a second water flow channel (17). The first water flow channel (16) is connected to the second water flow channel (17). The first water flow channel (16) is used to flow the liquid located in the first impeller assembly (8) to the second water flow channel (17). The second water flow channel (17) is used to flow water to the second impeller assembly (9).

7. A guide vane water pump employing a dual-output shaft motor according to claim 6, characterized in that, The second pump housing (15) is provided with a support block (19) for supporting the second impeller assembly (9). The support block (19) is provided with a plurality of through holes (20), which are used to connect the first water flow channel (16) and the second water flow channel (17).

8. A guide vane water pump employing a dual-output shaft motor according to claim 7, characterized in that, The support block (19) is also provided with a connecting pipe (21), which is used to connect the second impeller assembly (9) and the outlet (7).

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