A water-cooled structure for a permanent magnet electric drum stator

Abstract

This utility model relates to the field of permanent magnet electric drum technology, specifically a water-cooled stator structure for a permanent magnet electric drum. It includes a stator core with stator coils penetrating both ends and a stator shaft penetrating the inner cavity of the stator core. A water channel assembly is provided within the inner cavity of the stator core, comprising a water jacket with an inner ring and an outer ring. Multiple staggered water flow deflectors are fixedly installed on the outer wall of the inner ring. A first inlet and a first outlet are provided on the end face of the stator shaft. This utility model utilizes the first inlet and first outlet at one end of the stator shaft, connected to the second inlet and second outlet of the water channel assembly via two water pipes. The water channel assembly, using an inner ring, deflectors, baffles, a sealing ring, and an outer ring, forms a closed-flow water channel, achieving unidirectional water flow. This effectively prevents cross-contamination between the inlet and outlet water channels, and the structure is simple, improving heat dissipation efficiency and saving processing costs.

Description

Technical Field

[0001] This utility model relates to the field of permanent magnet electric drum technology, specifically a water-cooled stator structure for a permanent magnet electric drum. Background Technology

[0002] A permanent magnet electric roller is a low-speed, high-torque external rotor permanent magnet motor. Unlike traditional internal rotor motors, its shaft remains stationary while the outer casing rotates. It is mainly used in belt conveyor drive systems. The outer casing has a rubber coating layer, and the belt can be directly driven through the friction of the coating layer.

[0003] Temperature rise is an important parameter for the performance of permanent magnet electric rollers, so whether the temperature of the coil and permanent magnet can be effectively controlled determines the reliability of the permanent magnet electric rollers.

[0004] Most permanent magnet electric drum cooling systems use water cooling structures because water cooling is effective and, being in a closed space, is almost unaffected by harsh environments such as external dust or impurities.

[0005] Currently, water-cooling structures used in permanent magnet electric drums mostly embed water channels in the stator shaft, with two types: spiral and axial meandering. For spiral water channels, to achieve inlet and outlet on the same side, two adjacent spiral channels are often used as the inlet and outlet channels. However, the manufacturing process for these two spiral channels requires very high precision; there cannot be any gaps between the channels. Otherwise, water can easily flow between adjacent channels with different flow directions, meaning water from the inlet direction flows into the outlet channel, resulting in less water flowing inward and more flowing outward, leading to ineffective or poor heat dissipation. Therefore, we propose a water-cooling structure for the stator of a permanent magnet electric drum. Utility Model Content

[0006] The purpose of this invention is to provide a water-cooled structure for a permanent magnet electric drum stator, which solves the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a water-cooled structure for a permanent magnet electric drum stator, comprising a stator core, stator coils passing through both ends of the stator core, and a stator shaft passing through the inner cavity of the stator core;

[0008] The stator core cavity is provided with a water channel assembly, which includes a water jacket. The water jacket includes an inner ring and an outer ring. Multiple staggered water flow deflectors are fixedly installed on the outer wall of the inner ring. A first water inlet and a first water outlet are provided on the end face of the stator shaft. The first water inlet and the first water outlet extend to one side wall of the stator shaft. A second water inlet and a second water outlet are provided on the inner wall of the inner ring. The first water inlet and the second water inlet, as well as the first water outlet and the second water outlet, are connected by water pipes.

[0009] By adopting the above technical solution, water is first introduced through the first water inlet at one end of the stator shaft, and then enters between the inner and outer rings through the water pipe. The water flows between the inner and outer rings, and the water flow is unidirectional through the water flow deflector, which can effectively prevent water from crossing between the inlet and outlet water channels. The structure and process are simple, heat dissipation efficiency is improved, and processing costs are saved.

[0010] In a preferred embodiment of this utility model, a water channel blocking rib is fixedly installed at the middle of the top of the outer ring.

[0011] By adopting the above technical solution, the water channel blocking reinforcement can prevent water from overflowing or flowing between streams.

[0012] In a preferred embodiment of this utility model, support plates are fixedly fitted on both sides of the outer wall of the stator shaft, and the outer wall and inner ring of the support plates are fixedly connected.

[0013] By adopting the above technical solution, the relative stability between the water circuit assembly and the stator shaft can be guaranteed.

[0014] In a preferred embodiment of this utility model, a water-sealing ring is fixed between both ends of the inner ring and the outer ring.

[0015] By adopting the above technical solution and setting the water sealing ring, the water channel is well sealed, which helps to prevent water from overflowing.

[0016] In a preferred embodiment of this utility model, a wire passes through the other end of the stator shaft, and the wire is used for power supply.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] The present application discloses a water-cooled structure for a permanent magnet electric drum stator. A first water inlet and a first water outlet are provided at one end of the stator shaft, and are connected to the second water inlet and the second water outlet of the water circuit assembly through two water pipes. The water circuit assembly uses an inner ring, baffle ribs, partition ribs, sealing ring, and outer ring to form a closed flow channel, thereby realizing a unidirectional water circuit. This effectively prevents cross-contamination between the inlet and outlet water circuits, and the structure and process are simple, improving heat dissipation efficiency and saving processing costs. Attached Figure Description

[0019] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of a water-cooled stator for a permanent magnet electric drum according to this utility model;

[0021] Figure 2 This is a cross-sectional view of the water jacket structure of a water-cooled stator for a permanent magnet electric drum according to this utility model.

[0022] Figure 3 This is a side view of the water jacket structure of a water-cooled stator structure for a permanent magnet electric drum according to this utility model;

[0023] Figure 4 This is a schematic diagram of the water jacket structure of a water-cooled structure for a permanent magnet electric drum stator according to the present invention;

[0024] Figure 5 This is a schematic diagram of the water circuit development structure of a water-cooled structure for a permanent magnet electric drum stator according to this utility model;

[0025] Figure 6 This is a schematic diagram of the stator shaft end face structure of a water-cooled stator structure for a permanent magnet electric drum according to this utility model.

[0026] In the picture:

[0027] 1. Stator core; 11. Stator shaft; 12. Stator coil; 13. First water inlet; 14. First water outlet;

[0028] 2. Water jacket; 21. Inner ring; 22. Water channel blocking rib; 23. Water sealing ring; 24. Water pipe; 25. Support plate; 26. Water channel deflector rib; 27. Outer ring; 28. Second inlet; 29. ​​Second outlet. Detailed Implementation

[0029] Please see Figure 1-6 This utility model provides a technical solution: a water-cooled structure for a permanent magnet electric drum stator, including a stator core 1, stator coils 12 passing through both ends of the stator core 1, and a stator shaft 11 passing through the inner cavity of the stator core 1;

[0030] The stator core 1 has a water channel assembly inside, which includes a water jacket 2. The water jacket 2 includes an inner ring 21 and an outer ring 27. The outer wall of the inner ring 21 is fixedly equipped with a plurality of staggered water channel baffles 26. The end face of the stator shaft 11 is provided with a first water inlet 13 and a first water outlet 14. The first water inlet 13 and the first water outlet 14 extend to one side wall of the stator shaft 11. The inner wall of the inner ring 21 is provided with a second water inlet 28 and a second water outlet 29. The first water inlet 13 and the second water inlet 28, as well as the first water outlet 14 and the second water outlet 29, are all connected by water pipes 24.

[0031] It should be understood that in actual use, water is first introduced through the first water inlet 13 at one end of the stator shaft 11, and then enters between the inner ring 21 and the outer ring 27 through the water pipe 24. The water flows between the inner ring 21 and the outer ring 27, and the water flow is unidirectional through the water flow deflector 26, which can effectively prevent water from crossing between the inlet and outlet water channels. The structure and process are simple, heat dissipation efficiency is improved, and processing costs are saved.

[0032] like Figure 1 and 2 As shown; a water channel blocking rib 22 is fixedly installed at the top center of the outer ring 27. The water channel blocking rib 22 is designed to prevent water from overflowing or flowing through the water.

[0033] like Figure 1 and 2 As shown, support plates 25 are fixedly fitted on both sides of the outer wall of the stator shaft 11. The outer wall of the support plate 25 is fixedly connected to the inner ring 21, thereby ensuring the relative stability between the water circuit assembly and the stator shaft 11.

[0034] like Figure 1 and 2 As shown, a water-sealing ring 23 is fixed between both ends of the inner ring 21 and the outer ring 27. The water-sealing ring 23 ensures a good water seal and helps prevent water from overflowing.

[0035] It should be noted that a wire passes through the other end of the stator shaft 11, and the wire is used for power supply.

[0036] Furthermore, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although specific embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the specific embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water-cooled stator structure for a permanent magnet electric drum, comprising a stator core (1), characterized in that: Stator coils (12) are passed through both ends of the stator core (1), and a stator shaft (11) is passed through the inner cavity of the stator core (1); The stator core (1) is provided with a water circuit assembly, which includes a water jacket (2). The water jacket (2) includes an inner ring (21) and an outer ring (27). The outer wall of the inner ring (21) is fixedly equipped with a plurality of staggered water flow deflectors (26). The end face of the stator shaft (11) is provided with a first water inlet (13) and a first water outlet (14). The first water inlet (13) and the first water outlet (14) extend to one side wall of the stator shaft (11). The inner wall of the inner ring (21) is provided with a second water inlet (28) and a second water outlet (29). The first water inlet (13) and the second water inlet (28) and the first water outlet (14) and the second water outlet (29) are all connected by water pipes (24).

2. The water-cooled structure for a permanent magnet electric drum stator according to claim 1, characterized in that: A waterway blocking rib (22) is fixedly installed at the top center of the outer ring (27).

3. The water-cooled structure for a permanent magnet electric drum stator according to claim 1, characterized in that: Both sides of the outer wall of the stator shaft (11) are fixedly fitted with support plates (25), and the outer wall of the support plate (25) is fixedly connected to the inner ring (21).

4. The water-cooled structure for a permanent magnet electric drum stator according to claim 1, characterized in that: Water sealing rings (23) are fixed between both ends of the inner ring (21) and the outer ring (27).

5. The water-cooled structure for a permanent magnet electric drum stator according to claim 1, characterized in that: An electric wire passes through the other end of the stator shaft (11).

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