Water-cooling leakage-proof shielding motor

Abstract

The utility model discloses a water cooling leakproof shield motor, which comprises a casing, a rotor, a stator and a shielding cover embedded in the casing, the shielding cover is composed of an outer ring cylinder, an inner ring cylinder, a front annular cover and a rear annular cover and is coaxially enclosed to form an annular cavity for accommodating the stator, the stator is embedded and sleeved on the outer peripheral surface of the inner ring cylinder, and the rotor is sleeved on the outer peripheral surface of the inner ring cylinder. The rotor is coaxially pivoted and embedded in an inner cavity of the inner ring cylinder, and one end of the rotor axially extends and penetrates out of the shell; a water cooling flow channel arranged in a spiral circulation mode is formed in the circumferential face of the outer ring cylinder, a water inlet and a water outlet of the water cooling flow channel both extend to the outer end face of the rear annular cover, and a preset water inlet pipe and a preset water outlet pipe both extend to penetrate through the machine shell to be communicated with the water inlet and the water outlet in the rear annular cover.

Description

Technical Field

[0001] The utility model relates to the technical field of shielded motors, in particular to a water-cooled leak-proof shielded motor. Background Art

[0002] At present, the stator of the dry pump motor is equipped with a shielding cover and water cooling, wherein the interface of the water cooling pipe is set on the end face of the stator, and the preset input water pipe and output water pipe are inserted into the interface of the shielding cover on the end face by quick plugging, and the interface is sealed by the O-ring set at the end position of the input water pipe and the output water pipe. Since the domestic dry pump motors are mainly imported, they are expensive and not easy to buy in China, resulting in leakage prevention at the interface of the cooling pipe relying on only one O-ring. If the insertion is poor, the O-ring is aged and deformed, it is easy to leak. Water will flow into the stator cavity through the heat dissipation holes on the end cover, affecting the insulation of the winding and reducing the service life of the motor. It is difficult to purchase a replacement separately and the waiting time is long, affecting normal production work. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a water-cooled leak-proof shielded motor, which can effectively reduce the production cost of the shielded motor. The utility model also adopts a water cooling mode, but when a water leak occurs, the water will first flow to the outside of the motor through the leakage hole to ensure that the water will not flow into the stator, thereby improving the reliability of the motor life.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a water-cooled leak-proof shielded motor, comprising a casing, a rotor, a stator, and a shielding cover embedded in the casing, wherein the shielding cover is composed of an outer ring tube, an inner ring tube, a front annular cover and a rear annular cover and coaxially surrounds and forms an annular cavity for accommodating the stator, the stator is embedded and sleeved on the outer circumferential surface of the inner ring tube, the rotor is coaxially pivotally embedded in the inner cavity of the inner ring tube and one end thereof extends axially through the outside of the casing; a water-cooling channel is formed on the circumferential surface of the outer ring tube in a spirally arranged manner, wherein the water inlet and water outlet of the water-cooling channel are both extended to the outer end surface of the rear annular cover, and the preset water inlet pipe and water outlet pipe are both extended through the casing and connected with the water inlet and water outlet on the rear annular cover.

[0005] Furthermore, the water inlet and the water outlet of the water cooling channel are located at the lowest position of the rear annular cover.

[0006] Furthermore, the outer end surface of the rear annular cover is formed with a cofferdam groove around the water inlet and the water outlet; the end cover of the housing is formed with a drainage hole with one end connected to the cofferdam groove and the other end connected to the outside.

[0007] Furthermore, it also includes a liquid collecting box located below the leakage hole, wherein the liquid collecting box is used to receive the leaked liquid dripping through the leakage hole.

[0008] The utility model adopts the above-mentioned scheme, and its beneficial effects are: the water-cooled leak-proof shielded motor has shown significant advantages in heat dissipation performance, leak-proof design, intelligent monitoring and warning, modular design, and compact structure, and is suitable for various occasions requiring efficient, stable and safe motor drive. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1-2 Schematic diagram of a water-cooled leak-proof shielded motor.

[0010] Figure 3-4 A cross-sectional view of a water-cooled leak-proof shielded motor.

[0011] Figure 5 Exploded view of the water-cooled leak-proof shielded motor.

[0012] Figure 6 A schematic diagram of a shielding cover.

[0013] Among them, 1-casing, 11-leakage hole, 12-water inlet pipe, 13-water outlet pipe, 101-main body, 102-rear cover, 103-front cover, 2-rotor, 3-stator, 4-shielding cover, 41-annular cavity, 42-water cooling channel, 421-water inlet, 422-water outlet, 401-outer ring cylinder, 402-inner ring cylinder, 403-rear annular cover, 404-front annular cover, 5-liquid collecting box, 51-leakage sensor. DETAILED DESCRIPTION

[0014] In order to facilitate the understanding of the present invention, the present invention is described more comprehensively with reference to the accompanying drawings. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. The purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0015] See attached Figure 1-6 As shown, in this embodiment, a water-cooled leak-proof shielded motor includes a casing 1, a rotor 2, a stator 3, and a shielding cover 4 embedded in the casing 1, wherein the casing 1 is composed of a main body 101 with a cavity, a front cover 103 and a rear cover 102, the front cover 103 and the rear cover 102 are detachably fixed on the front and rear ends of the main body 101 respectively, and the main body 101, the front cover 103 and the rear cover 102 form a motor chamber for accommodating the above-mentioned rotor 2, stator 3 and shielding cover 4.

[0016] In this embodiment, the shielding cover 4 is composed of an outer ring cylinder 401, an inner ring cylinder 402, a front annular cover 404 and a rear annular cover 403. Specifically, the outer ring cylinder 401 and the inner ring cylinder 402 are coaxially nested inside and outside, and the front annular cover 404 and the rear annular cover 403 are respectively arranged at the two ends of the outer ring cylinder 401 and the inner ring cylinder 402. The outer ring cylinder 401, the inner ring cylinder 402, the front annular cover 404 and the rear annular cover 403 coaxially surround and form a structure for accommodating the stator 3. The annular cavity 41, and the stator 3 is embedded and sleeved on the outer circumferential surface of the inner ring tube 402. Based on this, during assembly, the outer ring tube 401, the inner ring tube 402 and the front annular cover 404 are first ultrasonically welded together, and then the stator 3 is coaxially nested on the outer circumferential surface of the inner ring tube 402, and finally the rear annular cover 403 is covered on the other end of the outer ring tube 401 and the inner ring tube 402 and ultrasonically welded together to complete the assembly operation of the shielding cover 4 and the stator 3.

[0017] In this embodiment, the stator 3 adopts a main body 101 structure of multiple stacked silicon steel sheets and a wire group wound by a double-layer winding method of copper enameled wire.

[0018] In this embodiment, the rotor 2 is coaxially pivoted and embedded in the inner cavity of the inner ring tube 402, and one end thereof axially extends through the outside of the housing 1, that is, the front end of the rotor 2 extends through the pre-opened hole of the front cover plate 103 of the housing 1 to the outside of the housing 1. In addition, in the actual assembly process, a bearing (not shown in the figure) is further provided between the rotor 2, the inner ring tube 402 and the housing 1, which is not specifically limited here, and those skilled in the art can set the bearings in appropriate positions and quantities according to actual specification requirements, structural requirements and other factors.

[0019] In this embodiment, the outer ring tube 401 is formed with a water-cooling channel 42 arranged in a spiral cycle. The water-cooling channel 42 can be fed with a flowing heat exchange liquid to exchange heat with the stator 3 placed in the annular cavity 41, thereby achieving the effect of heat absorption and cooling. Secondly, the water inlet 421 and the water outlet 422 of the water-cooling channel 42 are both extended to the outer end surface of the rear annular cover 403, wherein the preset water inlet pipe 12 and the water outlet pipe 13 are both extended through the housing 1 and connected with the water inlet 421 and the water outlet 422 on the rear annular cover 403, thereby, the external preset heat exchange liquid flows into the water inlet 421 of the water-cooling channel 42 through the water inlet pipe 12, and flows along the water-cooling channel 42 until it flows into the water outlet pipe 13 through the water outlet 422 of the water-cooling channel 42, thereby circulating and achieving the effect of circulating water cooling and heat dissipation.

[0020] In this embodiment, the water inlet 421 and the water outlet 422 of the water cooling channel 42 are located at the lowest position of the rear annular cover 403, wherein the connection positions of the water inlet 421 and the water inlet pipe 12, and the water outlet 422 and the water outlet pipe 13 are generally sealed by means of sealing rings, and as the sealing rings age, deform, or are poorly assembled, leakage is likely to occur, and if no interference is made, the coolant will flow back into the annular cavity 41 through the pre-opened holes in the rear annular cover 403. Based on this, the rear annular cover 403 is preferably provided with a sealing ring. The outer end surface of the shaped cover 403 is formed with a cofferdam groove around the water inlet 421 and the water outlet 422. Once leakage occurs, the leaked heat exchange liquid will accumulate in the cofferdam groove to avoid overflow; secondly, the end cover of the casing 1 is formed with a leakage hole 11 with one end connected to the cofferdam groove and the other end connected to the outside world. The accumulated heat exchange liquid can flow to the outside of the casing 1 through the leakage hole 11, thereby ensuring as much as possible that the leakage will not flow through the annular cavity 41 to affect the normal operation of the stator 3, thereby effectively improving the reliability of the motor life.

[0021] In this embodiment, a liquid collecting box 5 is also included, which is located below the leakage hole 11. The liquid collecting box 5 can be connected to the rear cover 102 of the casing 1 through a connecting rod, and the liquid collecting box 5 is located below the leakage hole 11. The liquid collecting box 5 is used to receive the leaked liquid dripping through the leakage hole 11 to prevent the leaked liquid from polluting the environment.

[0022] In this embodiment, the liquid collecting box 5 can be additionally provided with a liquid leakage sensor 51 for liquid detection, so that when the liquid leakage sensor 51 detects that there is liquid in the liquid collecting box 5, a preset alarm unit (not shown in the figure) can send relevant warning information based on the signal of the liquid leakage sensor 51, thereby playing the effect of alerting the operator.

[0023] Furthermore, the alarm unit can be a conventional alarm element such as a buzzer or a warning light, and data communication and processing can be performed between the alarm unit and the liquid leakage sensor 51 through a preset processor (such as a single chip microcomputer, a PLC, etc.). Specifically, the alarm unit is connected to the output port of the processor, and the liquid leakage sensor 51 is connected to the input port of the processor, so that when the liquid leakage sensor 51 detects liquid, a corresponding electrical signal is sent to the processor, and the processor processes the electrical signal and then sends a corresponding electrical signal to the alarm unit, so that the alarm unit sends relevant approximate information (such as flashing lights, alarm sounds, etc.). The above-mentioned liquid leakage sensor 51, alarm unit and processor are conventional circuit elements, and their structures and circuit principles are common knowledge to those skilled in the art, and will not be elaborated here.

[0024] This water-cooled leak-proof shielded motor has a series of significant advantages, mainly including the following aspects:

[0025] 1. High-efficiency water-cooling heat dissipation system: The motor is equipped with a unique water-cooling channel 42 design, which exchanges heat with the stator 3 through circulating heat exchange liquid to achieve rapid cooling, effectively ensuring the stable operation of the motor under long-term and high-load working conditions.

[0026] 2. Anti-leakage design: The cofferdam groove design on the rear annular cover 403 can collect the leaked heat exchange liquid in time when leakage occurs, preventing it from flowing into the annular cavity 41 and affecting the operation of the stator 3. At the same time, the setting of the leakage hole 11 and the liquid collecting box 5 further ensures that the leakage will not pollute the environment or damage the internal components of the motor.

[0027] 3. Intelligent leakage detection and warning: The leakage sensor 51 and alarm unit added to the liquid collection box 5 can monitor the leakage in real time, and send out a warning message when a leakage is detected, reminding the operator to deal with it in time or automatically close the cooling water inlet solenoid valve (not shown) through a preset processor, thereby avoiding possible safety hazards and motor damage.

[0028] 4. Modular design: The motor housing 1, shielding cover 4 and other components adopt modular design, which is easy to disassemble and repair, reducing maintenance costs and time. At the same time, the ultrasonic welding assembly method ensures the firm connection and sealing between the components.

[0029] 5. Compact structure: The overall structure of the motor is compact, making full use of the space, reducing the volume and weight, and facilitating installation and use. At the same time, the water cooling channel 42 design on the circumference of the outer ring cylinder 401 also achieves a perfect combination of efficient heat dissipation and compact structure.

[0030] In summary, this water-cooled leak-proof shielded motor has shown significant advantages in heat dissipation performance, leak-proof design, intelligent monitoring and warning, modular design, and compact structure, and is suitable for various occasions that require efficient, stable, and safe motor drive.

[0031] The embodiments described above are only preferred embodiments of the present invention and do not limit the present invention in any form. Any technician familiar with the field, without departing from the scope of the technical solution of the present invention, can make more possible changes and modifications to the technical solution of the present invention using the technical content disclosed above, or the modifications are equivalent embodiments of the present invention. Therefore, any equivalent and equivalent changes made according to the idea of ​​the present invention without departing from the content of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A water-cooled leak-proof shielded motor, characterized in that: The invention comprises a housing (1), a rotor (2), a stator (3), and a shielding cover (4) embedded in the housing (1), wherein the shielding cover (4) is composed of an outer ring cylinder (401), an inner ring cylinder (402), a front annular cover (404), and a rear annular cover (403), and is coaxially constructed to form an annular cavity (41) for accommodating the stator (3); the stator (3) is embedded and sleeved on the outer circumferential surface of the inner ring cylinder (402); the rotor (2) is coaxially pivotally embedded in the inner ring cylinder (402) The outer ring tube (401) has an inner cavity and one end thereof axially extends through the outside of the casing (1); the outer ring tube (401) is formed with a water-cooling channel (42) arranged in a spiral cycle on its circumferential surface, wherein the water inlet (421) and the water outlet (422) of the water-cooling channel (42) are both extended to the outer end surface of the rear annular cover (403), and the preset water inlet pipe (12) and the water outlet pipe (13) are both extended through the casing (1) and communicated with the water inlet (421) and the water outlet (422) on the rear annular cover (403).

2. A water-cooled leak-proof shielded motor according to claim 1, characterized in that: The water inlet (421) and the water outlet (422) of the water cooling channel (42) are located at the lowest position of the rear annular cover (403).

3. A water-cooled leak-proof shielded motor according to claim 2, characterized in that: The outer end surface of the rear annular cover (403) is formed with a cofferdam groove around the water inlet (421) and the water outlet (422); the end cover of the housing (1) is formed with a drainage hole (11) having one end in communication with the cofferdam groove and the other end in communication with the outside.

4. A water-cooled leak-proof shielded motor according to claim 3, characterized in that: It also comprises a liquid collecting box (5) located below the leakage hole (11), wherein the liquid collecting box (5) is used to receive the leaked liquid dripping through the leakage hole (11).

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