End cover for explosion-proof motor

Abstract

The utility model discloses an end cover for an explosion-proof motor, which belongs to the technical field of explosion-proof motors, and comprises an end cover body, a bearing sleeve fixed in the end cover body, and a water cooling ring fixed in the end cover body and used for water circulation flow, the plurality of heat conducting plates are fixed between the water cooling ring and the bearing sleeve, and the separating ring is fixed in the water cooling ring. The sealed water cooling ring is arranged in the end cover and is matched with a heat conduction structure such as a heat conduction plate, the interior of the water cooling ring is divided into a plurality of fan-shaped heat exchange areas, the flowing time of cooling liquid in the water cooling ring can be prolonged, the heat exchange effect is improved, the contact area of the cooling liquid in the heat exchange areas and the heat conduction structure is enlarged, and the service life of the cooling liquid is prolonged. The heat exchange efficiency is further improved, the efficient cooling effect of the motor is achieved, the heat accumulation speed in the motor is restrained, and the stability and safety of long-time operation of the motor are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion-proof motors, in particular to an end cover for explosion-proof motors. Background Art

[0002] The motor end cover is used to fix, support and seal the two ends of the motor shaft. It is divided into a front cover and a rear cover. Different end cover materials can be selected according to the working environment of the motor. Common materials include aluminum, aluminum casting, iron casting and plastic. A relatively rare end cover material is bakelite. When the motor is running, the bearings at both ends of the shaft will generate a lot of heat under high-speed friction. The continuous accumulation of heat inside the motor can easily lead to motor overheating failure, which directly affects the production progress. The existing end cover circumferentially wraps the end of the shaft by setting an annular sealing water channel on its outer end surface to achieve water cooling of the end of the shaft. However, the efficiency of this small-scale water cooling is limited. It can only slow down the speed of heat accumulation inside the motor, but it is difficult to suppress the speed of heat accumulation inside the motor.

[0003] The existing patent application number: 202128400555.5 discloses an end cover for a water-cooled explosion-proof motor. By setting an annular water channel on the outside of the end cover and sleeved it on the outside of the end of the rotating shaft, it is convenient to heat exchange the heat transferred to the end face of the end cover, and carry away the heat absorbed by the heat exchange, so as to achieve the cooling effect of the end cover. In the above-mentioned prior art, when the device is in use, it can only absorb heat from the end face of the end cover, and the cooling efficiency is limited. It can only slow down the speed of heat accumulation inside the motor, but it is difficult to suppress the speed of heat accumulation. Utility Model Content

[0004] The utility model aims to provide an end cover for explosion-proof motors to solve the problem in the background technology that the cooling efficiency is limited and the speed of heat accumulation inside the motor can only be slowed down, but the speed of heat accumulation is difficult to be suppressed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides an end cover for an explosion-proof motor, comprising an end cover body and a bearing sleeve fixed in the end cover body, and the end cover for an explosion-proof motor also includes:

[0007] A water cooling ring is fixed in the end cover body and is used for water circulation.

[0008] A plurality of heat conducting plates are fixed between the water cooling ring and the bearing sleeve.

[0009] A separation ring is fixed in the water cooling ring, and an annular groove is formed between two adjacent separation rings.

[0010] A plurality of heat conduction plates are fixed in the annular groove, and two adjacent heat conduction plates divide the interior of the annular groove into a plurality of heat exchange areas for heat exchange. The heat conduction plates are provided with lower through holes and upper through grooves for circumferentially connecting two adjacent heat exchange areas. A connecting groove for connecting two adjacent annular grooves is provided between the heat conduction plates and the end cover body.

[0011] A water inlet pipe is fixed in one of the heat exchange areas.

[0012] A water outlet pipe is fixed to another one of the heat exchange areas.

[0013] Furthermore, one end of the water inlet pipe and the water outlet pipe both pass through the end cover body and extend to the outside of the end cover body, and one end of the water outlet pipe is connected to a water storage tank for storing circulating water.

[0014] Furthermore, one end of the water inlet pipe is connected to a water pump, and the water pump is located in the water storage tank.

[0015] Furthermore, the lower through hole is located on the heat conduction plate at a boundary close to the bearing sleeve, and the upper through groove is located on the heat conduction plate at a boundary close to the inner wall of the end cover body.

[0016] Furthermore, the communicating groove is located between two adjacent upper through grooves in the axial direction of the end cover body, and both ends of the communicating groove are communicated with the two upper through grooves.

[0017] Furthermore, the bearing sleeve is located in the through hole at the center of the water-cooling ring, and the bearing sleeve and the water-cooling ring are in a coaxial relationship.

[0018] Furthermore, the end cover for the explosion-proof motor also includes a rotating shaft rotatably arranged in the bearing sleeve and a stepped sealing ring arranged between the rotating shaft and the end surface of the bearing sleeve.

[0019] Compared with the prior art, one or more of the above technical solutions have the following beneficial effects:

[0020] 1. The utility model divides the water cooling ring into several fan-shaped heat exchange areas by arranging a sealed water cooling ring inside the end cover and cooperating with heat conduction structures such as heat conduction plates, which can not only prolong the flow time of the coolant in the water cooling ring and improve the heat exchange effect, but also expand the contact area between the coolant and the heat conduction structure in the heat exchange area, further improve the heat exchange efficiency, achieve efficient cooling effect of the motor, inhibit the heat accumulation speed inside the motor, and ensure the stability and safety of the motor during long-term operation;

[0021] 2. The utility model forms a three-dimensional support area space through the cross distribution of a plurality of radially distributed heat conducting plates and heat transfer plates and a plurality of separation rings, thereby improving the internal structural strength of the end cover and the resistance of the end cover to external force collision, making it less likely to be deformed or damaged due to external force collision. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an axonometric drawing of the utility model;

[0023] Figure 2 It is an internal sectional view of the utility model;

[0024] Figure 3 It is an end cross-sectional view of the utility model;

[0025] Figure 4 It is a partial cross-sectional view of the utility model.

[0026] In the figure: 1. end cover body; 2. bearing sleeve; 3. water cooling ring; 4. heat conduction plate; 5. water inlet pipe; 6. water outlet pipe; 7. heat conduction plate; 8. heat exchange area; 9. separation ring; 10. annular groove; 11. lower through hole; 12. upper through groove; 13. connecting groove; 14. rotating shaft; 15. stepped sealing ring. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0028] like Figures 1 to 4 As shown, an end cover for an explosion-proof motor includes an end cover body 1 and a bearing sleeve 2 fixed in the end cover body 1. The end cover for the explosion-proof motor also includes:

[0029] A water cooling ring 3 is fixed in the end cover body 1 for water circulation.

[0030] A plurality of heat conducting plates 4 are fixed between the water cooling ring 3 and the bearing sleeve 2. The heat conducting plates 4 are arranged along the radial direction of the bearing sleeve 2 and are evenly distributed along the circumference of the bearing sleeve 2. This can improve the heat conduction efficiency and increase the supporting strength between the bearing sleeve 2 and the water cooling ring 3.

[0031] The separator ring 9 is fixed in the water-cooling ring 3, and an annular groove 10 is formed between two adjacent separator rings 9. The separator ring 9 and the heat conduction plate 7 are in a cross-vertical relationship, and cooperate with the radially arranged heat conduction plate 4 to greatly improve the overall support strength of the end cover body 1 and its resistance to external force collision, avoid it from being easily deformed or damaged by external force collision, and improve its service life and safety.

[0032] A plurality of heat conducting plates 7 are fixed in the annular groove 10. Two adjacent heat conducting plates 7 divide the interior of the annular groove 10 into a plurality of heat exchange areas 8 for heat exchange. The heat conducting plates 7 are provided with lower through holes 11 and upper through grooves 12 for circumferentially connecting two adjacent heat exchange areas 8. A connecting groove 13 for connecting two adjacent annular grooves 10 is provided between the heat conducting plates 7 and the end cover body 1.

[0033] A water inlet pipe 5 is fixed in one of the heat exchange areas 8 .

[0034] The outlet pipe 6 fixed in another heat exchange area 8 is located in different annular grooves 10, so that the water flow can flow through all the annular grooves 10 before flowing out from the outlet pipe 6. In this process, after the water flow enters the first annular groove 10, it will flow into all the heat exchange areas 8 within the range of the annular groove 10 through the lower through hole 11 and the upper through groove 12, filling each heat exchange area 8 from bottom to top in turn, and then flowing into the next annular groove 10 through the connecting groove 13, so as to extend the residence time of the water flow in the water cooling ring 3, and the heat will be transferred to the heat exchange area 8 through the heat conducting plate 4 and the heat conducting plate 7, and each heat conducting plate 7 will contact with the water in the two heat exchange areas 8 and complete the heat exchange, thereby improving the heat exchange efficiency, improving the heat dissipation effect of the end cover body 1, suppressing the heat increase efficiency in the motor, maintaining the temperature inside the motor within the normal range for a long time, reducing the probability of motor failure due to excessive temperature, and avoiding the impact of motor heating on production.

[0035] In this embodiment, one end of the water inlet pipe 5 and the water outlet pipe 6 pass through the end cover body 1 and extend to the outside of the end cover body 1. One end of the water outlet pipe 6 is connected to a water tank for storing circulating water, forming a water flow closed loop among the water tank, the water inlet pipe 5, the water cooling coil 3 and the water outlet pipe 6, so that when the water flows between the water cooling coil 3 and the water tank, most of the heat can be naturally dissipated, avoiding carrying too much heat into the water tank, causing the water temperature in the water tank to rise, and affecting the subsequent heat dissipation effect of the end cover body 1.

[0036] In this embodiment, one end of the water inlet pipe 5 is connected to a water pump, and the water pump is located in the water tank. Through the setting of the water pump, water can circulate among the water tank, the water inlet pipe 5, the water cooling ring 3 and the water outlet pipe 6, continuously cooling the interior of the end cover body 1, suppressing the heat increase efficiency inside the end cover body 1, and avoiding the continuous growth and accumulation of heat in the end cover body 1, which causes the temperature in the motor to be too high and cause a malfunction.

[0037] In this embodiment, the lower through hole 11 is located on the heat conduction plate 7 at the boundary close to the bearing sleeve 2, and the upper through groove 12 is located on the heat conduction plate 7 at the boundary close to the inner wall of the end cover body 1. Such a design can make the water flow smoothly in the two adjacent heat exchange areas 8, and in the process of initially filling the water in the water cooling ring 3, the air in the water cooling ring 3 can be completely discharged through the lower through hole 11 and the upper through groove 12, so as to avoid the water failing to fully fill the water cooling ring 3 and affecting the heat dissipation effect of the end cover body 1.

[0038] In this embodiment, the connecting groove 13 is located between two adjacent upper through grooves 12 in the axial direction of the end cover body 1, and the two ends of the connecting groove 13 are connected to the two upper through grooves 12. Such a design can be beneficial to the discharge of air inside the water cooling ring 3 when the water is filled inside the water cooling ring 3. During the subsequent heat exchange, the smoothness of the water flow is maintained, so that the water flow can efficiently carry away the heat inside the end cover body 1, thereby improving its heat dissipation efficiency and effectively suppressing the temperature rise inside the end cover body 1 for a long time.

[0039] In this embodiment, the bearing sleeve 2 is located in the through hole at the center of the water-cooling ring 3, and the bearing sleeve 2 and the water-cooling ring 3 are coaxial, surrounding the outside of the bearing sleeve 2 in all directions, efficiently absorbing the heat generated by the bearing sleeve 2, improving the water-cooling ring 3's absorption efficiency of the heat generated by the bearing sleeve 2, and fundamentally suppressing the problem of heat increase and accumulation in the end cover body 1.

[0040] In this embodiment, the end cover for the explosion-proof motor also includes a rotating shaft 14 rotatably arranged in the bearing sleeve 2 and a stepped sealing ring 15 arranged between the rotating shaft 14 and the end surface of the bearing sleeve 2. The freedom of the rotating shaft 14 is limited by the bearing sleeve 2 to prevent it from radially deviating and affecting the normal operation of the bearing.

[0041] The above description is only the preferred embodiment of the utility model, and the parts not described in the utility model can be implemented by adopting or drawing on existing technologies. Of course, the above description is not a limitation of the utility model, and the utility model is not limited to the above examples. The changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the utility model should also fall within the protection scope of the utility model.

Claims

1. An end cover for an explosion-proof motor, comprising an end cover body (1) and a bearing sleeve (2) fixed in the end cover body (1), characterized in that: The explosion-proof motor end cover also includes: A water cooling ring (3) fixed in the end cover body (1) for water circulation; A plurality of heat conducting plates (4) fixed between the water cooling ring (3) and the bearing sleeve (2); A separation ring (9) fixed in the water cooling ring (3), wherein two adjacent separation rings (9) are surrounded to form an annular groove (10); A plurality of heat conduction plates (7) fixed in the annular groove (10), wherein two adjacent heat conduction plates (7) divide the interior of the annular groove (10) into a plurality of heat exchange areas (8) for heat exchange, wherein the heat conduction plates (7) are provided with lower through holes (11) and upper through grooves (12) for circumferentially connecting two adjacent heat exchange areas (8), and a connecting groove (13) for connecting two adjacent annular grooves (10) is provided between the heat conduction plates (7) and the end cover body (1); A water inlet pipe (5) fixed in one of the heat exchange areas (8); A water outlet pipe (6) fixed in another of the heat exchange areas (8).

2. The end cover for explosion-proof motor according to claim 1, characterized in that: One end of the water inlet pipe (5) and the water outlet pipe (6) both pass through the end cover body (1) and extend to the outside of the end cover body (1); one end of the water outlet pipe (6) is connected to a water storage tank for storing circulating water.

3. The end cover for explosion-proof motor according to claim 2, characterized in that: One end of the water inlet pipe (5) is connected to a water pump, and the water pump is located in the water storage tank.

4. The end cover for explosion-proof motor according to claim 1, characterized in that: The lower through hole (11) is located on the heat conduction plate (7) at a boundary close to the bearing sleeve (2), and the upper through groove (12) is located on the heat conduction plate (7) at a boundary close to the inner wall of the end cover body (1).

5. The end cover for explosion-proof motor according to claim 4, characterized in that: The communication groove (13) is located between two adjacent upper through grooves (12) in the axial direction of the end cover body (1), and both ends of the communication groove (13) are in communication with the two upper through grooves (12).

6. The end cover for explosion-proof motor according to claim 5, characterized in that: The bearing sleeve (2) is located in a through hole at the center of the water cooling ring (3), and the bearing sleeve (2) and the water cooling ring (3) are in a coaxial relationship.

7. The end cover for explosion-proof motor according to claim 5, characterized in that: The explosion-proof motor end cover further comprises a rotating shaft (14) rotatably arranged in the bearing sleeve (2), and a stepped sealing ring (15) arranged between the rotating shaft (14) and the end surface of the bearing sleeve (2).

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