Water pump without shielding sleeve

Abstract

The utility model provides a water pump without a shielding sleeve, and belongs to the technical field of water pump instruments. The motor solves the problems that an existing motor generates heat seriously after working for a long time, and effective cooling is difficult to achieve through natural heat dissipation. The water pump without the shielding sleeve comprises a water pump body, a mounting bin, a permanent magnet motor assembly and an impeller are arranged in the water pump body, the mounting bin is used for mounting the permanent magnet motor assembly, the mounting bin is arranged in the middle of the water pump body and used for dividing the water pump body into a water inlet cavity and a water outlet cavity, and a main flow channel is arranged between the outer side wall of the mounting bin and the water pump body; the permanent magnet motor assembly comprises a stator winding, a rotor, an axial flow channel and a connecting bearing, the stator winding is arranged on the inner wall of the mounting bin, the rotor is coaxially connected with the impeller, and the axial flow channel is arranged between the stator winding and the rotor in a penetrating mode. The motor cooling device has the advantages of performing liquid cooling on the motor, reducing the working temperature of the motor and the like.

Description

Technical Field

[0001] This utility model belongs to the field of water pump equipment technology, and specifically relates to a water pump without a shielding sleeve. 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] Existing motors generate significant heat after prolonged operation, making it difficult to effectively cool them down through natural heat dissipation. Working at high temperatures for extended periods can lead to a decrease in motor lifespan. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a water pump without a shielding sleeve.

[0005] The objective of this utility model can be achieved through the following technical solution: A shieldless water pump includes a water pump body, in which an installation chamber, a permanent magnet motor assembly, and an impeller are disposed. The installation chamber is used for installing the permanent magnet motor assembly and is located in the middle of the water pump body. The installation chamber is used to divide the water pump body into an inlet chamber and an outlet chamber. A main flow channel is provided between the outer wall of the installation chamber and the water pump body. The main flow channel is used for the liquid in the inlet chamber to flow to the outlet chamber. The permanent magnet motor assembly includes a stator winding, a rotor, an axial flow channel, and a connecting bearing. The stator winding is disposed on the inner wall of the installation chamber. The rotor is coaxially connected to the impeller. The axial flow channel is disposed through the stator winding and the rotor.

[0006] The working principle of this utility model is as follows: When the water pump body is working, the liquid is first drawn into the inlet chamber. The impeller drives the liquid to move. Most of the liquid enters the outlet chamber from the main flow channel. The permanent magnet motor assembly is cooled by cooling the installation chamber. A small part enters the permanent magnet motor assembly through the axial flow channel, directly cooling the permanent magnet motor assembly. It then flows to the outlet chamber through the axial flow channel and leaves the water pump body from the outlet chamber, thus completing the pressurization of the liquid.

[0007] In the aforementioned water pump without a shielding sleeve, the two ends of the installation chamber are respectively provided with multiple water inlets and multiple water outlets.

[0008] In the aforementioned water pump without a shielding sleeve, a first water flow channel is provided on the rotor.

[0009] In the aforementioned unshielded water pump, the stator winding is provided with multiple second water flow channels.

[0010] In the aforementioned shieldless water pump, the impeller includes a first impeller assembly and a second impeller assembly, with the first impeller assembly disposed in the inlet chamber and the second impeller assembly disposed in the outlet chamber.

[0011] In the aforementioned shieldless water pump, a support column is provided between the installation chamber and the water pump body.

[0012] In the aforementioned water pump without a shielding sleeve, a gasket is provided between the mounting cavity and the first impeller assembly and the second impeller assembly.

[0013] Compared with the prior art, this utility model has the advantage of being able to perform liquid cooling on the motor and reduce the motor's operating temperature. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0016] Figure 3 This is a schematic diagram of the structure of this utility model.

[0017] Figure 4 This is a schematic cross-sectional view of the present invention along the AA direction.

[0018] Figure 5 This is a schematic cross-sectional view of the present invention along the BB direction.

[0019] Figure 6 This is a cross-sectional structural diagram of the present invention in the CC direction.

[0020] In the diagram, 1. Pump body; 2. Mounting chamber; 3. Permanent magnet motor assembly; 4. Impeller; 5. Inlet chamber; 6. Outlet chamber; 7. Main flow channel; 8. Stator winding; 9. Rotor; 10. Axial flow channel; 11. Connecting bearing; 12. Inlet; 13. Outlet; 14. First flow channel; 15. Second flow channel; 16. First impeller assembly; 17. Second impeller assembly; 18. Support column; 19. Gasket. 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 1-6As shown, this unshielded water pump includes a water pump body 1. The water pump body 1 is provided with an installation chamber 2, a permanent magnet motor assembly 3, and an impeller 4. The installation chamber 2 is used for installing the permanent magnet motor assembly 3. The installation chamber 2 is located in the middle of the water pump body 1. The installation chamber 2 is used to divide the water pump body 1 into an inlet chamber 5 and an outlet chamber 6. A main flow channel 7 is provided between the outer wall of the installation chamber 2 and the water pump body 1. The main flow channel 7 is used to allow the liquid in the inlet chamber 5 to flow to the outlet chamber 6. The permanent magnet motor assembly 3 includes a stator winding 8, a rotor 9, an axial flow channel 10, and a connecting bearing 11. The stator winding 8 is located on the inner wall of the installation chamber 2. The rotor 9 is coaxially connected to the impeller 4. The axial flow channel 10 is provided through between the stator winding 8 and the rotor 9.

[0023] To elaborate further, the installation chamber 2 is equipped with multiple water inlets 12 and multiple water outlets 13 at both ends, which increases the amount of liquid entering the installation chamber 2 and further enhances the cooling effect of the permanent magnet motor assembly 3.

[0024] To elaborate further, the rotor 9 is provided with a first water flow channel 14, which allows the liquid to directly contact the rotor 9, thereby increasing the cooling effect.

[0025] To elaborate further, the stator winding 8 is provided with multiple second water channels 15, which allow the liquid to directly contact the stator winding 8, thereby increasing the cooling effect.

[0026] To elaborate further, the impeller 4 includes a first impeller group 4 and a second impeller group 4. The first impeller group 4 is located in the water inlet chamber 5, and the second impeller group 4 is located in the water outlet chamber 6. The two impeller groups 4 are configured for secondary pressurization.

[0027] To elaborate further, a support column 18 is provided between the installation chamber 2 and the water pump body 1. This is used to increase the overall strength of the water pump and also to fix the installation chamber 2.

[0028] To elaborate further, a gasket 19 is provided between the installation chamber and the first impeller group 4 and the second impeller group 4. The gasket 19 provides space in the middle for liquid to pass through, so that the liquid can reach the inlet 12 through the gap or leave the installation chamber 2 from the outlet 13.

[0029] 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.

[0030] 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 water pump without a shielding sleeve, characterized in that, The pump includes a pump body (1), which contains an installation chamber (2), a permanent magnet motor assembly (3), and an impeller (4). The installation chamber (2) is used for installing the permanent magnet motor assembly (3). The installation chamber (2) is located in the middle of the pump body (1) and is used to divide the pump body (1) into an inlet chamber (5) and an outlet chamber (6). A main shaft is provided between the outer wall of the installation chamber (2) and the pump body (1). The main flow channel (7) is used to supply the liquid in the inlet chamber (5) to the outlet chamber (6). The permanent magnet motor assembly (3) includes a stator winding (8), a rotor (9), an axial flow channel (10), and a connecting bearing (11). The stator winding (8) is disposed on the inner wall of the mounting chamber (2). The rotor (9) is coaxially connected to the impeller (4). The axial flow channel (10) is disposed through the stator winding (8) and the rotor (9).

2. The water pump without a shielding sleeve according to claim 1, characterized in that, The installation chamber (2) is provided with multiple water inlets (12) and multiple water outlets (13) at both ends.

3. A water pump without a shielding sleeve according to claim 2, characterized in that, The rotor (9) is provided with a first water flow channel (14).

4. A water pump without a shielding sleeve according to claim 2, characterized in that, The stator winding (8) is provided with multiple second flow channels (15).

5. A water pump without a shielding sleeve according to claim 1, characterized in that, The impeller (4) includes a first impeller group (16) and a second impeller group (17), the first impeller group (16) being disposed in the water inlet chamber (5) and the second impeller group (17) being disposed in the water outlet chamber (6).

6. A water pump without a shielding sleeve according to claim 1, characterized in that, A support column (18) is provided between the installation chamber (2) and the water pump body (1).

7. A water pump without a shielding sleeve according to claim 5, characterized in that, A gasket (19) is provided between the installation chamber (2) and the first impeller assembly (16) and the second impeller assembly (17).

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