Solar water pump with brush

Abstract

The utility model belongs to the technical field of water pumps, and particularly relates to a brush solar water pump. Comprising a brush motor and a pump head, the brush motor comprises a motor shell assembly and a motor shaft, a front end cover is arranged at the front end of the motor shell assembly, a motor shaft support is integrally formed at the rear end of the motor shell assembly, the two ends of the motor shaft are rotationally arranged on the motor shaft support and the front end cover respectively, and a rotor and a steering gear are arranged on the motor shaft. A rotor winding of the rotor is electrically connected with the steering gear, a stator iron core is arranged on the inner wall of the motor shell assembly, fan blades are arranged on the motor shaft between the rotor and the front end cover, a wind shield is arranged at the rear end of the motor shaft support, a plurality of air inlet holes are formed in the wind shield, and an air outlet is formed in the front end cover. According to the utility model, the fan blades draw external air from the air inlet holes to the front end cover through the rotor and the stator iron core, and exhaust the air from the air outlet of the front end cover, so that heat generated when the rotor and the stator iron core work can be taken away by the path, and the heat dissipation effect is greatly improved.

Description

Technical fields:

[0001] This utility model belongs to the field of water pump technology, specifically referring to a brushed solar water pump. Background technology:

[0002] A brushed solar water pump is a brushed motor water pump system that uses solar energy to drive it. It is suitable for remote areas or scenarios without power grid coverage and has the advantage of zero pollution.

[0003] Chinese utility model patent (authorization announcement number CN 221742856U, application date 2023.12.26, announcement date 2024.09.20) discloses a novel DC solar pump, including a DC permanent magnet brushed motor powered by photovoltaics and a bracket for fixing the DC permanent magnet brushed motor. The DC permanent magnet brushed motor is provided with a pump head at the front end. The DC permanent magnet brushed motor is composed of a motor housing and a motor shaft. A front cover and a rear cover are respectively installed at the front and rear ends of the motor housing. A rotor and a steering gear are provided on the motor shaft. The rotor winding of the rotor is electrically connected to the steering gear. A mounting part for installing the steering gear is provided on the rear cover. Several elastic components are placed on the left side of the rear cover and located on both sides of the steering gear. The elastic components are composed of carbon brushes, carbon brush holders and elastic bodies. Several elastic components are connected to the rear cover through an insulating plate. A fixing plate for installing the elastic body is provided on the insulating plate. A protective cover is provided on the left side of the rear cover. An impeller is installed on the motor shaft and located on the left side of the protective cover. A second protective cover is installed on the rear end cover to protect the impeller.

[0004] As can be seen from the above, the impeller of the aforementioned motor is positioned between the protective cover and the rotor and stator, with the protective cover located on the left side of the rear end cover. Since the motor primarily generates heat through the operation of the rotor and stator, the impeller in the above structure cannot effectively dissipate the heat from the rotor, resulting in poor heat dissipation. Summary of the Invention:

[0005] The purpose of this invention is to provide a brushed solar water pump with good motor heat dissipation.

[0006] This utility model is implemented as follows:

[0007] A brushed solar water pump includes a brushed motor and a pump head. The brushed motor includes a motor housing assembly and a motor shaft. The front end of the motor housing assembly is provided with a front cover, and the rear end is integrally formed with a motor shaft bracket. The two ends of the motor shaft are respectively rotatably mounted on the motor shaft bracket and the front cover. A rotor and a steering gear are provided on the motor shaft. The rotor winding of the rotor is electrically connected to the steering gear. A stator core is provided on the inner wall of the motor housing assembly. A fan blade is provided on the motor shaft between the rotor and the front cover. A wind baffle is provided at the rear end of the motor shaft bracket. The wind baffle is provided with several air inlets. An exhaust port is provided on the front cover.

[0008] In the aforementioned brushed solar water pump, two sets of air inlets are provided, and the two sets of air inlets are arranged symmetrically.

[0009] In the aforementioned brushed solar water pump, each set of air inlets is distributed in a fan shape, including several arc-shaped holes, and a guide plate is provided on the upper edge of the arc-shaped holes.

[0010] In the aforementioned brushed solar water pump, the motor shaft support includes two symmetrically arranged fan-shaped holes.

[0011] In the aforementioned brushed solar water pump, two mounting plates are symmetrically arranged on the inner wall of the motor housing assembly near the motor shaft support. Each mounting plate is provided with an elastic component via an insulating plate. The elastic component includes a carbon brush, a carbon brush holder, and an elastomer.

[0012] In the aforementioned brushed solar water pump, the motor housing assembly includes a motor cylinder and a motor housing fitted over the motor cylinder, and the mounting plate is disposed on the motor housing.

[0013] In the aforementioned brushed solar water pump, an enlarged hole is provided on the inner wall of the motor housing from the front end cover toward the motor shaft support. The enlarged hole and the inner wall of the motor housing form a first stepped surface, and one end of the motor cylinder abuts against the first stepped surface.

[0014] In the aforementioned brushed solar water pump, the two ends of the motor shaft are rotatably mounted on the motor shaft bracket and the front end cover via a first bearing and a second bearing, respectively.

[0015] In the aforementioned brushed solar water pump, a reduced diameter section is provided on the motor shaft, and a second stepped surface is formed between the reduced diameter section and the motor shaft. The fan blade is limited between the first bearing and the second stepped surface.

[0016] The outstanding advantages of this utility model compared to the prior art are:

[0017] 1. The fan blade of this utility model draws the outside air from the air inlet through the rotor and stator core to the front cover, and then discharges it from the exhaust port of the front cover. This path can carry away the heat generated by the rotor and stator core during operation, greatly improving the heat dissipation effect and extending the service life of the brushed motor.

[0018] 2. The motor housing assembly of this utility model adopts a modular design, which facilitates installation, disassembly and maintenance and simplifies the operation process; in addition, the materials and structure of the motor housing can be adjusted according to requirements to suit different application scenarios. Attached image description:

[0019] Figure 1 This is a top view of the present invention;

[0020] Figure 2 yes Figure 1 AA section view;

[0021] Figure 3 This is a schematic diagram of the brushed motor of this utility model;

[0022] Figure 4 This is a schematic diagram of the wind deflector of the brushed motor of this utility model after disassembly;

[0023] Figure 5 This is a schematic diagram showing the brushed motor of this utility model with its bottom facing upwards;

[0024] Figure 6 This is a schematic diagram of a motor shaft with a fan blade, rotor, steering gear and two bearings.

[0025] In the diagram: 1. Brushed motor; 2. Pump head; 3. Motor housing assembly; 4. Motor shaft; 5. Front end cover; 6. Motor shaft bracket; 7. Rotor; 8. Steering gear; 9. Rotor winding; 10. Stator core; 11. Fan blade; 12. Baffle plate; 13. Air inlet; 14. Air outlet; 15. Air guide plate; 16. Mounting plate; 17, 18. Carbon brush; 19. Carbon brush holder; 20. Elastomer; 21. Motor cylinder; 22. Motor housing; 23. First bearing; 24. Second bearing. Detailed implementation method:

[0026] The present invention will be further described below with reference to specific embodiments:

[0027] like Figures 1-6 As shown, this utility model provides a brushed solar water pump, which is driven by solar energy and is suitable for remote areas or scenarios without power grid coverage. It includes a brushed motor 1 and a pump head 2. The brushed motor 1 includes a motor housing assembly 3 and a motor shaft 4. The front end of the motor housing assembly 4 is provided with a front cover 5 and the rear end is integrally formed with a motor shaft support 6. The two ends of the motor shaft 4 are respectively rotatably mounted on the motor shaft support 6 and the front cover 5. The motor shaft 4 is provided with a rotor 7 and a steering gear 8. The rotor winding 9 of the rotor 7 is electrically connected to the steering gear 8. A stator core 10 is provided on the inner wall of the motor housing assembly 4. A fan blade 11 is provided on the motor shaft 4 between the rotor 7 and the front cover 5. A wind baffle 12 is provided at the rear end of the motor shaft support 6. The wind baffle 12 is provided with several air inlets 13. The front cover 5 is provided with an exhaust port 14.

[0028] In this invention, the fan blade 11 rotates synchronously with the motor shaft 4. When the fan blade 11 rotates, it draws the outside air from the air inlet 13 through the rotor 7 and stator core 10 to the front cover, and then discharges it from the exhaust port of the front cover. This path can carry away the heat generated by the rotor 7 and stator core 10 during operation, greatly improving the heat dissipation effect and extending the service life of the brushed motor 1.

[0029] like Figure 3 As shown, there are two sets of air inlets 13, which are symmetrically arranged. Each set of air inlets 13 is fan-shaped and includes several arc-shaped holes. A guide plate 15 is provided on the upper side of the arc-shaped holes. When the fan blade 11 rotates, the outside air is guided into the motor housing assembly 3 through the guide plate 15 and the arc-shaped holes.

[0030] like Figure 4 As shown, the motor shaft bracket 6 includes two symmetrically arranged fan-shaped holes. Two mounting plates 16 are symmetrically arranged on the inner wall of the motor housing assembly 3 near the motor shaft bracket 6. Each mounting plate 16 has an elastic component mounted on it via an insulating plate 17. The elastic component includes a carbon brush 18, a carbon brush holder 19, and an elastomer 20. The positions of the mounting plates 16 correspond to the positions of the fan-shaped holes.

[0031] Furthermore, such as Figures 2-5 As shown, the motor housing assembly 3 includes a motor cylinder 21 and a motor housing 22 fitted over the motor cylinder 21. The mounting plate 16 is disposed on the motor housing 22, and the motor shaft bracket 6 is also formed on the motor housing 22. This structure of the motor housing assembly 3 has the following advantages: the motor housing assembly 3 adopts a modular design, facilitating installation, disassembly, and maintenance, and simplifying the operation process; furthermore, the materials and structure of the motor housing 22 can be adjusted according to requirements, making it suitable for different application scenarios. In this utility model, the motor housing 22 can be integrally formed with the motor shaft bracket 6 and the mounting plate 16, simplifying the installation process.

[0032] Specifically, such as Figure 2 As shown, an enlarged hole is provided on the inner wall of the motor housing 22 from the front end cover 5 toward the motor shaft support 6. The enlarged hole and the inner wall of the motor housing 22 form a first stepped surface, and one end of the motor cylinder 21 abuts against the first stepped surface. The motor housing 22 and the motor cylinder 21 are tightly fitted together, and the stator core 10 is installed on the inner wall of the motor cylinder 21.

[0033] In addition, such as Figure 2 and Figure 6As shown, the two ends of the motor shaft 4 are rotatably mounted on the motor shaft bracket 6 and the front end cover 5 via the first bearing 23 and the second bearing 24, respectively, allowing the motor shaft 4 to rotate flexibly. Furthermore, the motor shaft 4 has a reduced diameter section, forming a second stepped surface between the reduced diameter section and the motor shaft 4. The fan blade 11 is positioned between the first bearing 23 and the second stepped surface, facilitating the assembly of the fan blade 11. The connection between the fan blade 11 and the motor shaft 4 can be achieved using a key connection.

[0034] The above embodiments are only one of the preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes made in accordance with the shape, structure and principle of this utility model should be covered within the protection scope of this utility model.

Claims

1. A brushed solar water pump, comprising a brushed motor (1) and a pump head (2), characterized in that: The brushed motor (1) includes a motor housing (22) assembly (3) and a motor shaft (4). The front end of the motor housing (22) assembly (3) is provided with a front end cover (5) and the rear end is integrally formed with a motor shaft bracket (6). The two ends of the motor shaft (4) are respectively rotatably mounted on the motor shaft bracket (6) and the front end cover (5). The motor shaft (4) is provided with a rotor (7) and a steering gear (8). The rotor winding (9) of the rotor (7) is electrically connected to the steering gear (8). A stator core (10) is provided on the inner wall of the motor housing (22) assembly (3). A fan blade (11) is provided on the motor shaft (4) between the rotor (7) and the front end cover (5). A baffle plate (12) is provided at the rear end of the motor shaft bracket (6). A plurality of air inlets (13) are provided on the baffle plate (12). An exhaust port (14) is provided on the front end cover (5).

2. The brushed solar water pump according to claim 1, characterized in that: The air inlet (13) is provided in two sets, and the two sets of air inlets are arranged symmetrically.

3. A brushed solar water pump according to claim 2, characterized in that: Each group of air inlets (13) is distributed in a fan shape, including several arc-shaped holes, and an air guide plate (15) is provided on the upper edge of the arc-shaped holes.

4. A brushed solar water pump according to claim 1, characterized in that: The motor shaft support (6) includes two symmetrically arranged fan-shaped holes.

5. A brushed solar water pump according to claim 4, characterized in that: Two mounting plates (16) are symmetrically arranged on the inner wall of the motor housing (22) assembly (3) near the motor shaft bracket (6). Each mounting plate (16) has an elastic component arranged on it through an insulating plate (17). The elastic component includes a carbon brush (18), a carbon brush holder (19), and an elastomer (20).

6. A brushed solar water pump according to claim 5, characterized in that: The motor housing (22) assembly (3) includes a motor cylinder (21) and a motor housing (22) fitted outside the motor cylinder (21), and the mounting plate (16) is disposed on the motor housing (22).

7. A brushed solar water pump according to claim 6, characterized in that: An enlarged hole is provided on the inner wall of the motor housing (22) from the front end cover (5) toward the motor shaft bracket (6). The enlarged hole and the inner wall of the motor housing (22) form a first step surface, and one end of the motor cylinder (21) abuts against the first step surface.

8. A brushed solar water pump according to any one of claims 1-7, characterized in that: The two ends of the motor shaft (4) are rotatably mounted on the motor shaft bracket (6) and the front end cover (5) via the first bearing (23) and the second bearing (24), respectively.

9. A brushed solar water pump according to claim 8, characterized in that: The motor shaft (4) is provided with a reduced diameter section, and a second step surface is formed between the reduced diameter section and the motor shaft (4). The fan blade (11) is limited between the first bearing (23) and the second step surface.

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