Fan heat dissipation explosion-proof drum motor
Patent Information
- Application Number
- CN202522137143.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-10
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-10-10
AI Technical Summary
[0003]本实用新型实施例提供一种风机散热防爆滚筒电机，旨在能够解决现有技术中风机散热隔爆滚筒电机占用空间大，不便于矿井下布局使用的问题
[0012]本申请实施例所示的方案，与现有技术相比，通过设置有主轴，在主轴的中部套装有散热腔室，散热腔的外侧壁上安装有定子线圈，并且在主轴的第一端的中部设置有通风通道，通风通道与散热腔室连通，在主轴的第一端固定安装有风机，风机用于向通风通道内部输送空气，空气进入到散热腔室内部进行降温，并通过散热腔室另一端的排风口排出，排风口与通风通道分别位于散热腔室的两端。本申请，通过在主轴靠近第一端的位置固定安装有套管，套管的内壁与主轴的外壁间隔设置组成穿线通道，可以将定子线圈外接线缆通过穿线通道穿出，与接线盒连接，接线盒与套管密封连接，既可以实现防爆功能也可以实现风机与接线盒均位于主轴第一端的一侧，节省防爆电机占用轴线方向的空间，即方便后期维护、维修，又可以合理利用矿井下通道内部的空间。
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Figure CN224923560U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of explosion-proof motor technology, specifically relating to an explosion-proof roller motor for fan cooling. Background Technology
[0002] Drum motors are commonly used on belt conveyors in underground mines to drive the belt. During operation, drum motors generate heat, requiring cooling devices to ensure stable operation. Currently, a common cooling method is fan cooling. This involves machining ventilation holes in the main shaft that connect to the inside of the drum motor, and installing a fan on the main shaft to blow air into it. A junction box needs to be led out from inside the drum motor, with cables from the junction box exiting through the other end of the main shaft. Therefore, the junction box and fan are located at opposite ends of the drum motor. However, due to limited space in mines, this design results in a large footprint, requiring maintenance space at both ends of the drum motor, leading to a large installation footprint and hindering efficient use of the mine's internal space. Utility Model Content
[0003] This utility model provides a fan cooling explosion-proof drum motor, which aims to solve the problem that the existing fan cooling explosion-proof drum motor occupies a large space and is not convenient for underground mine layout.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a fan cooling explosion-proof drum motor, comprising: The spindle includes a first end and a second end, and a ventilation channel is provided in the middle of the first end; A heat dissipation chamber is fixedly installed on the main shaft. The heat dissipation chamber is connected to the ventilation channel, and an exhaust port is provided at one end of the heat dissipation chamber. The rotor is rotatably disposed outside the heat dissipation chamber and forms an installation gap with the heat dissipation chamber for mounting the stator coil. A junction box is fixedly installed at the first end of the main shaft; A fan is fixedly installed at the first end of the rotor and is used to deliver air into the ventilation duct. A sleeve is fitted onto the outside of the first end. Both ends of the sleeve are sealed to the side walls of the spindle and the heat dissipation chamber, respectively. A wire passage is provided between the sleeve and the spindle. Both ends of the wire passage are connected to the installation gap and the junction box, respectively.
[0005] In one possible implementation, the junction box is fixedly installed on the outer side wall of the sleeve, and the side wall of the sleeve is provided with a wiring hole communicating with the junction box.
[0006] In one possible implementation, a ventilation pipe is fixedly connected to one end of the heat dissipation chamber near the second end, the heat dissipation chamber is connected to the ventilation pipe, and the rotor is rotatably disposed outside the ventilation pipe and the sleeve.
[0007] In one possible implementation, a support ring is fixedly installed between the ventilation pipe and the main shaft, and the support ring is provided with a plurality of ventilation holes.
[0008] In one possible implementation, the sleeve is further provided with a through hole spaced apart from the wiring hole along the axis of the sleeve, and one end of the rotor is rotatably disposed between the through hole and the wiring hole.
[0009] In one possible implementation, a plurality of vent holes are provided on the side wall of the spindle, and the plurality of vent holes are all connected to the heat dissipation chamber and are evenly spaced along the circumference of the spindle.
[0010] In one possible implementation, a plurality of heat dissipation fins are fixedly installed on the inner wall of the heat dissipation chamber, and the plurality of heat dissipation fins are evenly spaced along the circumference of the heat dissipation chamber.
[0011] In one possible implementation, a partition is fitted on the outer side of the spindle, the partition being located inside the heat dissipation chamber, and the partition being spaced apart from the inner wall of the heat dissipation chamber.
[0012] Compared with the prior art, the solution shown in this application embodiment features a main shaft with a heat dissipation chamber fitted in its middle. A stator coil is mounted on the outer wall of the heat dissipation chamber, and a ventilation channel is located in the middle of the first end of the main shaft, communicating with the heat dissipation chamber. A fan is fixedly installed at the first end of the main shaft, supplying air into the ventilation channel. The air enters the heat dissipation chamber for cooling and is discharged through an exhaust port at the other end of the chamber. The exhaust port and the ventilation channel are located at opposite ends of the heat dissipation chamber. Furthermore, this application includes a sleeve fixedly installed near the first end of the main shaft. The inner wall of the sleeve and the outer wall of the main shaft are spaced apart to form a wiring channel, through which the external cable of the stator coil can be passed and connected to a junction box. The junction box is sealed to the sleeve. This achieves both explosion-proof functionality and allows the fan and junction box to be located on one side of the first end of the main shaft, saving space occupied by the explosion-proof motor along the axial direction. This facilitates later maintenance and repair and makes efficient use of the space inside the mine tunnel. Attached Figure Description
[0013] Figure 1 A schematic diagram of the structure of the explosion-proof roller motor for heat dissipation of the fan provided in this embodiment of the utility model; Figure 2A side sectional view of the fan cooling explosion-proof drum motor provided for an embodiment of this utility model; Figure 3 for Figure 2 Enlarged view of part A in the middle; Figure 4 for Figure 2 A magnified view of part B in the middle.
[0014] Explanation of reference numerals in the attached figures: 1. Spindle; 2. Heat dissipation chamber; 21. Ventilation duct; 211. Support ring; 22. Heat dissipation fins; 3. Rotor; 4. Junction box; 5. Fan; 6. Sleeve; 7. Partition plate. Detailed Implementation
[0015] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0016] Please refer to the following: Figures 1 to 4 The present invention provides a description of a fan-cooled explosion-proof roller motor. The fan-cooled explosion-proof roller motor includes a main shaft 1, a cooling chamber 2, a rotor 3, a junction box 4, a fan 5, and a sleeve 6. The main shaft 1 includes a first end and a second end, with a ventilation channel in the middle of the first end. The cooling chamber 2 is fixedly mounted on the main shaft 1, communicating with the ventilation channel, and has an exhaust port at one end. The rotor 3 is rotatably mounted outside the cooling chamber 2, forming an installation gap with the cooling chamber 2 for mounting the stator coil. The junction box 4 is fixedly mounted at the first end of the main shaft 1. The fan 5 is fixedly mounted at the first end of the rotor 3, used to supply air into the ventilation channel. The sleeve 6 is fitted onto the outside of the first end, with both ends of the sleeve 6 sealed to the side walls of the main shaft 1 and the cooling chamber 2, respectively. A wire-passing channel is provided between the sleeve 6 and the main shaft 1, with both ends of the wire-passing channel communicating with the installation gap and the junction box 4, respectively.
[0017] The fan-cooled explosion-proof roller motor provided in this embodiment, compared with the prior art, is equipped with a main shaft 1, a heat dissipation chamber 2 is installed in the middle of the main shaft 1, a stator coil is installed on the outer wall of the heat dissipation chamber 2, and a ventilation channel is provided in the middle of the first end of the main shaft 1, which is connected to the heat dissipation chamber 2. A fan 5 is fixedly installed at the first end of the main shaft 1, and the fan 5 is used to deliver air into the ventilation channel. The air enters the heat dissipation chamber 2 for cooling and is discharged through the exhaust port at the other end of the heat dissipation chamber 2. The exhaust port and the ventilation channel are located at the two ends of the heat dissipation chamber 2, respectively. In this application, a sleeve 6 is fixedly installed near the first end of the main shaft 1. The inner wall of the sleeve 6 and the outer wall of the main shaft 1 are spaced apart to form a wire passage. The external cable of the stator coil can be passed through the wire passage and connected to the junction box 4. The junction box 4 and the sleeve 6 are sealed together. This not only achieves the explosion-proof function, but also allows the fan 5 and the junction box 4 to be located on one side of the first end of the main shaft 1, saving the space occupied by the explosion-proof motor in the axial direction. This facilitates later maintenance and repair, and also makes reasonable use of the space inside the mine tunnel.
[0018] Specifically, in this embodiment, a soft sleeve for mounting a fan 5 is fitted on the first end of the main shaft 1. The fan 5 is fixedly mounted on the soft sleeve, and the air outlet of the fan 5 is aligned with the ventilation channel on the first end of the main shaft 1.
[0019] Specifically, in this embodiment, the two ends of the sleeve 6 are respectively sealed and connected to the outer walls of the main shaft 1 and the heat dissipation chamber 2 by circumferential welding, and are respectively sealed and rotated on the outer side of the sleeve 6 and the heat dissipation chamber 2 by the two ends of the rotor 3, thereby ensuring the sealing effect of the installation gap between the rotor 3 and the heat dissipation chamber 2 and achieving the explosion-proof effect.
[0020] Specifically, in this embodiment, a support portion is provided on one end of the sleeve 6 near the first end of the spindle 1, which protrudes inward and slides with the spindle 1 to ensure the stability of the installation position between the sleeve 6 and the spindle 1.
[0021] In some embodiments, the junction box 4 described above can be as follows: Figure 1 , Figure 2 The structure shown. See also... Figure 1 , Figure 2 Junction box 4 is fixedly installed on the outer wall of sleeve 6, and sleeve 6 has a wiring hole communicating with junction box 4 on its side wall. Junction box 4 is a sealed structure. A wiring conduit is sealed to the bottom of junction box 4. The wiring conduit is fixedly installed on the outer wall of sleeve 6, and the side wall of the wiring conduit is sealed to both the side wall of junction box 4 and the side wall of sleeve 6, thus providing explosion-proof protection. A wiring hole is provided on the side wall of sleeve 6. After the wiring conduit is fixed to the side wall of sleeve 6, the opening of the wiring conduit communicates with the wiring hole, allowing the cable to be introduced into the wiring conduit and connected to the inside of junction box 4.
[0022] In some embodiments, the heat dissipation chamber 2 may be as follows: Figure 2 , Figure 4 The structure shown. See also... Figure 2 , Figure 4 A ventilation pipe 21 is fixedly connected to one end of the heat dissipation chamber 2 near the second end. The heat dissipation chamber 2 and the ventilation pipe 21 are connected and configured. The rotor 3 is rotatably mounted on the outside of the ventilation pipe 21 and the sleeve 6. A ventilation pipe 21 is connected to one side of the heat dissipation chamber 2 near the second end. The ventilation pipe 21 is fitted onto the outside of the main shaft 1 and spaced apart from the outer wall of the main shaft 1. Cold air from the outside can be transmitted to the inside of the heat dissipation chamber by the fan 5. After absorbing heat, the air is discharged through the gap between the ventilation pipe 21 and the main shaft 1. This achieves the effect of cooling the stator coil inside the motor.
[0023] Specifically, in this embodiment, the stator coil is fixedly installed on the outer wall of the heat dissipation chamber 2. Through heat conduction through the side wall of the heat dissipation chamber 2, the heat dissipation effect of the stator coil can be effectively achieved.
[0024] In some embodiments, the ventilation duct 21 may be as follows: Figure 2 , Figure 4 The structure shown. See also... Figure 2 , Figure 4 A support ring 211 is fixedly installed between the ventilation pipe 21 and the main shaft 1. The support ring 211 has multiple ventilation holes. The design of the support ring 211 enhances the stability of the support for the ventilation pipe 21. In this embodiment, the rotor 3 is rotatably mounted on the outside of the ventilation pipe 21 via a bearing, and the support ring 211 is located at the bearing mounting position on the ventilation pipe 21, thereby improving the support strength of the ventilation pipe 21 for the bearing mounting position. Simultaneously, the support ring 211 has multiple ventilation holes, which are evenly spaced along the circumference of the support ring 211, ensuring smooth airflow. Furthermore, the even arrangement of the ventilation holes along the circumference of the support ring 211 allows for stable airflow around the perimeter of the heat dissipation chamber 2.
[0025] Optionally, in this embodiment, the outer sidewall of the support ring 211 is slidably disposed on the inner wall of the ventilation pipe 21, and the inner sidewall of the support ring 211 is slidably disposed on the outer sidewall of the main shaft 1. A support platform for limiting the position of the support ring 211 is provided on the main shaft 1. After the support ring 211 is installed in place, it can also be fixedly installed onto the main shaft 1 or the ventilation pipe 21 by welding.
[0026] In some embodiments, the sleeve 6 described above can be as follows: Figure 2 The structure shown. See also Figure 4The sleeve 6 is also provided with through holes spaced apart from the wiring holes along the axis of the sleeve 6. One end of the rotor 3 is rotatably positioned between the through holes and the wiring holes. Through holes and wiring holes are sequentially arranged on the sleeve 6 along its axis. The through holes connect to the interior of the rotor 3, and the wiring holes connect to the junction box 4, allowing the cables on the stator coils to pass through the sleeve 6 and then into the junction box 4. This ensures that the cables can stably pass through the through-channel. One end of the rotor 3 is rotatably positioned on the outside of the sleeve 6 via a bearing, located between the through holes and the wiring holes. Sealing rings are installed at both ends of the bearing on the rotor 3, ensuring that the through-hole operation is not affected and that the internal sealing of the rotor 3 is not compromised, thus guaranteeing effective explosion-proof performance.
[0027] Specifically, in this embodiment, the two ends of the rotor 3 are rotatably mounted on the outside of the sleeve 6 and the ventilation pipe 21 respectively through bearings, and oil seals are installed on both sides of the bearings to improve the sealing effect inside the rotor 3, thereby improving the explosion-proof effect.
[0028] In some embodiments, the spindle 1 described above can be as follows: Figure 2 , Figure 4 The structure shown. See also... Figure 3 , Figure 3 Multiple vent holes are provided on the side wall of the main shaft 1, and all of these vent holes are connected to the heat dissipation chamber 2. These vent holes are evenly spaced along the circumference of the main shaft 1. The portion of the main shaft 1 located inside the heat dissipation chamber also has multiple vent holes, which are evenly distributed along the circumference of the main shaft 1 on its outer side. This allows air to be dispersed into the heat dissipation chamber through the multiple vent holes when the fan 5 delivers air into the ventilation channel, enabling air to circulate around the inside of the heat dissipation chamber and thus improving heat dissipation.
[0029] Specifically, in this embodiment, air enters the heat dissipation chamber 2 through multiple vent holes on the main shaft 1, and then exits through multiple ventilation holes on the support ring 211, thereby ensuring that the entire perimeter of the heat dissipation chamber 2 can be stably cooled.
[0030] In some embodiments, the heat dissipation chamber 2 may be as follows: Figure 2 The structure shown. See also Figure 3Multiple heat dissipation fins 22 are fixedly installed on the inner wall of the heat dissipation chamber 2, and the multiple heat dissipation fins 22 are evenly spaced along the circumference of the heat dissipation chamber 2. The length direction of the heat dissipation fins 22 is set along the axis of the main shaft 1, and one side of the heat dissipation fins 22 is fixedly installed on the inner wall of the heat dissipation chamber 2. The multiple heat dissipation fins 22 are fixedly installed on the inner wall of the heat dissipation chamber 2, and the multiple heat dissipation fins 22 are evenly spaced. Through the design of multiple heat dissipation fins 22, the heat dissipation effect inside the heat dissipation chamber 2 can be enhanced, and the heat dissipation efficiency can be improved. At the same time, the length direction of the heat dissipation fins 22 is set along the axis of the main shaft 1, which can guide the airflow inside the heat dissipation chamber 2.
[0031] In some embodiments, the spindle 1 described above can be as follows: Figure 2 The structure shown. See also Figure 3 Figure 2 Figure 2 Figure 2 Figure 2 A partition 7 is fitted onto the outer side of the main shaft 1. The partition 7 is located inside the heat dissipation chamber 2 and is spaced apart from the inner wall of the heat dissipation chamber 2. The partition 7 is a disc-shaped structure and is coaxial with the main shaft 1. The partition 7 guides air to circulate along the inner wall of the heat dissipation chamber 2. Specifically, in this embodiment, during motor operation, the temperature of the inner wall of the heat dissipation chamber 2 is higher than the internal temperature of the chamber. The partition 7 guides air to circulate along the inner wall of the heat dissipation chamber 2, thereby improving heat dissipation efficiency.
[0032] Preferably, in this embodiment, the partition 7 is located inside the heat dissipation chamber 2 on the side near the second end, which can ensure the overall airflow inside the heat dissipation chamber 2, and at the same time, allow most of the air to circulate quickly on one side of the inner wall of the heat dissipation chamber 2.
[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A fan cooling explosion-proof drum motor, characterized in that, include: The main shaft (1) includes a first end and a second end, and a ventilation channel is provided in the middle of the first end; A heat dissipation chamber (2) is fixedly installed on the main shaft (1). The heat dissipation chamber (2) is connected to the ventilation channel, and an exhaust port is provided at one end of the heat dissipation chamber (2). The rotor (3) is rotatably disposed on the outside of the heat dissipation chamber (2) and forms an installation gap with the heat dissipation chamber (2) for mounting the stator coil; Junction box (4) is fixedly installed at the first end of the main shaft (1); A fan (5) is fixedly installed at the first end of the rotor (3) for supplying air into the ventilation channel; A sleeve (6) is fitted onto the outside of the first end. Both ends of the sleeve (6) are sealed to the side walls of the main shaft (1) and the heat dissipation chamber (2), respectively. A wire passage is provided between the sleeve (6) and the main shaft (1). Both ends of the wire passage are connected to the installation gap and the junction box (4), respectively.
2. The fan cooling explosion-proof drum motor as described in claim 1, characterized in that, The junction box (4) is fixedly installed on the outer side wall of the sleeve (6), and the side wall of the sleeve (6) is provided with a wiring hole that communicates with the junction box (4).
3. The fan cooling explosion-proof drum motor as described in claim 1, characterized in that, The heat dissipation chamber (2) is fixedly connected to a ventilation pipe (21) at one end near the second end. The heat dissipation chamber (2) is connected to the ventilation pipe (21). The rotor (3) is rotatably disposed on the outside of the ventilation pipe (21) and the sleeve (6).
4. The fan cooling explosion-proof drum motor as described in claim 3, characterized in that, A support ring (211) is fixedly installed between the ventilation pipe (21) and the main shaft (1), and the support ring (211) is provided with multiple ventilation holes.
5. The fan cooling explosion-proof drum motor as described in claim 2, characterized in that, The sleeve (6) is also provided with a through hole that is spaced apart from the wiring hole along the axis of the sleeve (6), and one end of the rotor (3) is rotatably disposed between the through hole and the wiring hole.
6. The fan cooling explosion-proof drum motor as described in claim 1, characterized in that, The main shaft (1) has a plurality of ventilation holes on its side wall. The plurality of ventilation holes are connected to the heat dissipation chamber (2) and are evenly spaced along the circumference of the main shaft (1).
7. The fan cooling explosion-proof drum motor as described in claim 1, characterized in that, Multiple heat dissipation fins (22) are fixedly installed on the inner wall of the heat dissipation chamber (2), and the multiple heat dissipation fins (22) are evenly spaced along the circumference of the heat dissipation chamber (2).
8. The explosion-proof roller motor for heat dissipation of a fan as described in claim 1, characterized in that, A partition (7) is fitted on the outside of the main shaft (1). The partition (7) is located inside the heat dissipation chamber (2), and the partition (7) is spaced apart from the inner wall of the heat dissipation chamber (2).