Sealed low-noise explosion-proof motor

Abstract

The invention discloses a sealed low-noise explosion-proof motor, and relates to the sealed low-noise explosion-proof technical field, the sealed low-noise explosion-proof motor comprises a shell, the top of the shell is fixedly connected with a junction box, one side of the shell is fixedly connected with an end cover, one side of the end cover is fixedly connected with a sealing assembly, one side of the end cover is fixedly connected with a noise reduction assembly, and the noise reduction assembly is fixedly connected with the junction box. The outer wall of the shell is fixedly connected with an anti-explosion heat dissipation assembly, one side of the end cover is fixedly connected with a speed reducer, the sealing assembly comprises a sealing protruding block, and the sealing protruding block is fixed to one side of the end cover. According to the sealed low-noise explosion-proof motor, the stepped sealing convex blocks arranged on the end cover are tightly attached to the sealing grooves matched in size in the shell, a multi-layer concave-convex structure is used for forming airflow damping to block dust and gas, and the O-shaped ring sealing gasket which is selectively hydrogenated on the basis of nitrile rubber is arranged at the joint of the end cover and the shell. Medium permeation is blocked by means of tight fitting of high and low temperature resistance and corrosion resistance, and a good sealing effect in the motor is achieved.

Description

Technical Field

[0001] This invention relates to the field of sealed, low-noise, and explosion-proof technology, specifically to a sealed, low-noise, and explosion-proof motor. Background Technology

[0002] As a key electromagnetic device for converting electrical energy into mechanical energy, the electric motor is widely used in modern industry and daily life. According to its working principle, it is divided into DC motors and AC motors; according to its application, it also includes various types such as drive motors and control motors. Its core components consist of stator, rotor and commutator. The electric motor has many outstanding characteristics such as high efficiency, reliability and easy control. With these advantages, it has become the core power source in fields such as efficient operation of automated equipment, stable transportation, and smooth energy conversion, continuously and powerfully promoting the continuous development of modern technology.

[0003] In existing technologies, when a motor is running, external dust, corrosive gases, and working media can easily penetrate into the motor. Dust accumulates in key parts such as motor windings and bearings, causing a decrease in insulation performance and an increase in friction; corrosive gases corrode internal metal components, causing rust; and leakage or infiltration of the working media can interfere with the normal lubrication and cooling of the motor. These problems not only interfere with the stable operation of the motor, leading to performance fluctuations and reduced efficiency, but also accelerate the wear and tear of internal components, significantly shorten the motor's service life, and increase maintenance costs and downtime risks. Therefore, we need a sealed, low-noise, explosion-proof motor. Summary of the Invention

[0004] The purpose of this invention is to provide a sealed, low-noise, explosion-proof motor to solve the problem mentioned in the background art that existing motor seals are prone to allowing dust, gas, and media to enter the motor, affecting the normal operation and service life of the motor.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a sealed, low-noise, explosion-proof motor, comprising a housing, a fan shroud fixedly connected to the top of the housing, an end cap fixedly connected to one side of the housing, a sealing assembly fixedly connected to one side of the end cap, a noise reduction assembly fixedly connected to one side of the end cap, an explosion-proof heat dissipation assembly fixedly connected to the outer wall of the housing, a speed reducer fixedly connected to one side of the end cap, the sealing assembly including a sealing protrusion fixedly attached to one side of the end cap, a sealing groove formed on one side of the housing, a sealing gasket provided on one side of the housing, a waterproof gasket provided on one side of the end cap, a locking block fixedly connected to one side of the end cap, a locking groove formed on one side of the housing, an elastic gasket fixedly connected inside the locking groove, and a bolt provided on the outer wall of the housing, one end of which is threadedly connected to a nut.

[0006] Preferably, the end cap forms a sealing structure through a sealing protrusion and a sealing groove, and the sealing protrusion is a stepped design, and the outer diameter of the sealing protrusion matches the inner diameter of the sealing groove, and the outer wall of the sealing protrusion fits into the inner wall of the sealing groove.

[0007] Preferably, the end cap forms an engaging structure with a locking block and a locking groove, with one end of the locking block extending into the groove for connection, and two elastic pads inside the groove fitting against both sides of the locking block.

[0008] Preferably, the noise reduction component includes a bearing seat, which is fixed to one side of the end cap. A buffer pad is fixedly connected to one side of the bearing seat, and a bearing is fixedly connected inside the bearing seat. Sound-absorbing cotton is provided inside the housing.

[0009] Preferably, the bearing is a low-noise precision ball bearing with precisely arranged balls and a grease circulation channel structure between the inner and outer rings, and is stably installed inside the bearing seat.

[0010] Preferably, the shell is made of aluminum alloy and has a hollow cylindrical shape. Flame-retardant sound-absorbing cotton is evenly pasted inside the shell by adhesive, and the flame-retardant sound-absorbing cotton completely covers the internal area of ​​the shell.

[0011] Preferably, the explosion-proof heat dissipation assembly includes a rotor, which is disposed inside the housing. A winding is fixedly connected to the outer wall of the rotor. A fan is fixedly connected to one side of the rotor. Blades are fixedly connected to the outer wall of the fan. Heat dissipation fins are fixedly connected to the outer wall of the housing. A heat dissipation channel is provided inside the housing. A stator is disposed inside the housing. A heat-conducting plate is disposed between the stator and the housing. A corrugated heat dissipation fin is fixedly connected to the inner wall of the fan shroud.

[0012] Preferably, the winding is made of high-temperature resistant insulating material and is arranged in a spiral shape on the outer wall of the rotor. The number of winding layers is set according to the power requirements of the motor. Each winding is tightly fitted with a small heat dissipation gap. A stator is provided on the outside of the rotor, and a suitable air gap is maintained between the stator and the rotor.

[0013] Preferably, the housing is an explosion-proof shell, manufactured using an integrated molding process, with multiple heat dissipation fins on the surface, evenly distributed along the circumferential direction of the outer wall of the housing, and multiple wavy heat dissipation fins inside the fan shroud, with the multiple wavy heat dissipation fins evenly distributed along the circumferential direction with the center of the cross-section of the fan shroud as the center.

[0014] Preferably, there are multiple heat dissipation channels, and these multiple heat dissipation channels are evenly distributed along the circumference with the center of the cross section of the shell as the center, and one end of the heat dissipation channel is connected to the sealing groove.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] In the scheme of this application:

[0017] 1. To address the problem in existing technologies where motor seals easily allow dust, gas, and media to enter the motor, affecting its normal operation and service life, this application addresses this issue by setting stepped sealing protrusions that fit tightly against the sealing grooves to create airflow damping and block dust and gas. It also employs O-ring gaskets and waterproof gaskets with high and low temperature resistance and corrosion resistance to prevent media penetration. Furthermore, it utilizes locking blocks and slots to clamp and compress elastic gaskets for initial fixation to enhance sealing, and then further secures the seal with bolts and nuts. This multi-layered, all-around effective sealing prevents external substances from entering, ensures normal motor operation, and extends service life.

[0018] 2. In order to solve the problem of high noise during motor operation in the prior art, which affects the user experience and working environment, this application sets a bearing seat fixed on the end cover, which is equipped with a low-noise precision ball bearing with a precise ball arrangement and a grease circulation channel structure. This reduces the friction coefficient and noise, and improves the service life. A buffer pad is set between the bearing seat and the end cover to buffer vibration. An aluminum alloy shell is used to weaken resonance noise. Flame-retardant sound-absorbing cotton is evenly pasted inside to absorb electromagnetic and airflow noise, thus achieving low-noise operation of the motor.

[0019] 3. To address the problem in existing technologies where motors are prone to explosions due to electrical sparks or high temperatures during operation, this application employs an integrated explosion-proof housing with heat dissipation fins. Multiple heat dissipation channels are connected to the sealing grooves to form a convection cooling system. A fan on one side of the rotor drives streamlined blades to accelerate heat dissipation and reduce noise. The fan shroud contains wave-shaped heat dissipation fins to increase the contact area, and a heat-conducting plate quickly transfers heat from the stator to the housing. This effectively resolves the contradiction between sealing and heat dissipation while ensuring explosion-proof safety, significantly improving the overall heat dissipation efficiency of the motor, ensuring stable operation of the motor in high-temperature environments, and extending the motor's service life. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the noise reduction component and sealing component of the present invention;

[0022] Figure 3 This is a schematic diagram of the end cap and sealing assembly structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the bearing and bearing structure of the present invention;

[0024] Figure 5This is a schematic diagram of the heat dissipation fins and stator structure of the present invention;

[0025] Figure 6 This is a schematic diagram of the explosion-proof heat dissipation component structure of the present invention;

[0026] Figure 7 This is a schematic diagram of the fan cover and wave-shaped heat dissipation fins structure of the present invention.

[0027] Figure 8 This is a schematic diagram of the housing and slot structure of the present invention.

[0028] Figure 9 For the present invention Figure 8 Enlarged structural diagram at point A in the middle.

[0029] In the diagram: 1. Housing; 2. Fan cover; 3. End cover; 4. Sealing assembly; 401. Sealing protrusion; 402. Sealing groove; 403. Sealing gasket; 404. Waterproof gasket; 405. Locking block; 406. Locking slot; 407. Elastic gasket; 408. Bolt; 409. Nut; 5. Noise reduction assembly; 501. Shaft seat; 502. Buffer pad; 503. Bearing; 504. Sound-absorbing cotton; 6. Explosion-proof heat dissipation assembly; 601. Rotor; 602. Winding; 603. Fan; 604. Blade; 605. Heat dissipation fins; 606. Heat dissipation channel; 607. Stator; 608. Heat conduction plate; 609. Corrugated heat dissipation fins; 7. Reducer. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] This invention provides a sealed, low-noise, explosion-proof motor, such as... Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 8 and Figure 9As shown, the device includes a housing 1, a fan shroud 2 fixedly connected to the top of the housing 1, an end cap 3 fixedly connected to one side of the housing 1, a sealing assembly 4 fixedly connected to one side of the end cap 3, a noise reduction assembly 5 fixedly connected to one side of the end cap 3, an explosion-proof heat dissipation assembly 6 fixedly connected to the outer wall of the housing 1, and a speed reducer 7 fixedly connected to one side of the end cap 3. The sealing assembly 4 includes a sealing protrusion 401, which is fixed to one side of the end cap 3. A sealing groove 402 is provided on one side of the housing 1, a sealing gasket 403 is provided on one side of the housing 1, a waterproof gasket 404 is provided on one side of the end cap 3, a locking block 405 is fixedly connected to one side of the end cap 3, a locking groove 406 is provided on one side of the housing 1, and an elastic gasket 407 is fixedly connected inside the locking groove 406. A bolt 408 is provided on the outer wall of the housing 1, and a nut 409 is threadedly connected to one end of the bolt 408. The sealing protrusion 401 on the end cap 3 has a stepped design and is connected to the sealing assembly 7 on the housing 1. The groove 402 is sized and fits tightly, forming airflow damping through a multi-layered concave-convex structure, effectively preventing dust and gas from entering the housing 1. Meanwhile, the O-ring sealing gasket 403 and waterproof gasket 404, located at the connection between the end cover 3 and the housing 1, are made of nitrile rubber and selectively hydrogenated to improve performance, possessing high and low temperature resistance and corrosion resistance. They fit tightly to both, blocking media penetration and ensuring good internal sealing of the motor. Simultaneously, the end cover 3 engages with the slot 406 of the housing 1 via a locking block 405. This allows the locking block 405 to extend into the slot 406, and the end cover 3 to be rotated to engage, compressing the two elastic gaskets 407 within the slot 406. The elastic force of the gaskets 407 clamps and fixes the locking block 405, initially enhancing the sealing. Furthermore, a bolt 408 penetrates one side of the housing 1 and the end cover 3 and is fixed with a nut 409, further strengthening the fixation and ensuring a good seal, preventing external substances from entering.

[0032] Furthermore, such as Figure 3 and Figure 5 As shown, the end cap 3 forms a sealing structure through the sealing protrusion 401 and the sealing groove 402. The sealing protrusion 401 is a stepped design, and the outer diameter of the sealing protrusion 401 matches the inner diameter of the sealing groove 402. The outer wall of the sealing protrusion 401 fits against the inner wall of the sealing groove 402. The sealing protrusion 401 and the sealing groove 402 form an airflow damping through a multi-layer concave-convex structure, further preventing dust and gas from entering the housing 1.

[0033] Furthermore, such as Figure 3 , Figure 5 , Figure 8 and Figure 9As shown, the end cap 3 forms a locking structure with the slot 406 via a locking block 405, and one end of the locking block 405 extends into the slot 406 for connection. Two elastic pads 407 are provided inside the slot 406 and fit against both sides of the locking block 405. By using the locking block 405, one end of the locking block 405 can extend into the slot 406. Rotating the end cap 3 can cause the locking block 405 to be locked into the slot 406, which can cause the locking block 405 to press against the two elastic pads 407. The locking block 405 is clamped and fixed by the rebound force of the elastic pads 407.

[0034] In a further preferred embodiment of the present invention, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the noise reduction component 5 includes a bearing seat 501, which is fixed to one side of the end cover 3. A buffer pad 502 is fixedly connected to one side of the bearing seat 501. A bearing 503 is fixedly connected inside the bearing seat 501. Sound-absorbing cotton 504 is provided inside the housing 1. The bearing seat 501 is fixed to the end cover 3, and a low-noise precision ball bearing 503 is installed inside it. The balls are precisely arranged, and the inner and outer rings are provided with a grease circulation channel structure, which reduces the coefficient of friction, reduces friction noise, and improves service life. A buffer pad 502 is provided between the bearing seat 501 and the end cover 3 to buffer vibration transmission. The housing 1 is made of aluminum alloy, which can weaken resonance noise. The flame-retardant sound-absorbing cotton 504 evenly pasted inside completely covers the internal area, absorbing internal electromagnetic noise and airflow noise, further reducing the noise generated when the motor is running.

[0035] Furthermore, such as Figure 4 As shown, bearing 503 is a low-noise precision ball bearing 503. Its balls are precisely arranged, and a grease circulation channel structure is provided between the inner and outer rings. It is stably installed inside the bearing seat 501, which reduces the friction coefficient of bearing 503, reduces friction noise, and improves the service life of bearing 503.

[0036] Furthermore, such as Figure 5 As shown, the housing 1 is made of aluminum alloy and has a hollow cylindrical shape. Flame-retardant sound-absorbing cotton 504 is evenly pasted inside the housing by adhesive, and the flame-retardant sound-absorbing cotton 504 completely covers the internal area of ​​the housing 1. The aluminum alloy housing 1 can effectively reduce resonance noise. Furthermore, the sound-absorbing cotton 504 absorbs internal electromagnetic noise and airflow noise, thereby further reducing the noise generated when the motor is running.

[0037] In a further preferred embodiment of the present invention, such as Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7As shown, the explosion-proof heat dissipation assembly 6 includes a rotor 601, which is disposed inside the housing 1. A winding 602 is fixedly connected to the outer wall of the rotor 601. A fan 603 is fixedly connected to one side of the rotor 601, and blades 604 are fixedly connected to the outer wall of the fan 603. Heat dissipation fins 605 are fixedly connected to the outer wall of the housing 1. A heat dissipation channel 606 is provided inside the housing 1. A stator 607 is disposed inside the housing 1, and a heat-conducting plate 608 is disposed between the stator 607 and the housing 1. Corrugated heat dissipation fins 609 are fixedly connected to the inner wall of the fan shroud 2. The outer wall of the rotor 601 is wound with high-temperature resistant insulating material windings 602, which are closely arranged with small heat dissipation gaps to ensure stable operation of the motor in high-temperature environments. The fan 603 on one side of the rotor 601 drives the blades 604 to rotate, accelerating airflow. The blades 604 have a streamlined structure, reducing airflow disturbance noise and improving heat dissipation efficiency. The housing 1 is integrally formed. The explosion-proof housing has uniformly distributed heat dissipation fins 605 on its surface, which can dissipate internal heat to the surrounding environment. Multiple heat dissipation channels 606 are evenly distributed along the central circumference of the cross-section of the housing 1, with one end connected to the sealing groove 402, forming a convection heat dissipation system with the heat dissipation fins 605. Combined with the thermal conductivity of the aluminum alloy housing 1, the conflict between sealing and heat dissipation is resolved. At the same time, it prevents the motor from exploding due to electrical sparks or high temperature. The wave-shaped heat dissipation fins 609 set inside the fan cover 2 can increase the contact area with air, and carry away heat more efficiently when the air flows. Together with the heat dissipation fins 605 of the housing 1, it further improves the overall heat dissipation performance of the motor. The heat conduction plate 608 is placed between the stator 607 and the housing 1, which can quickly conduct the heat generated by the stator 607 to the housing 1. With the help of the large heat dissipation area of ​​the housing 1 and the heat dissipation fins 605 and other structures on it, the heat is dissipated to the surrounding environment more quickly, effectively improving the heat dissipation efficiency of the motor and ensuring the stable operation of the motor.

[0038] Furthermore, such as Figure 5 and Figure 6 As shown, the winding 602 is made of high-temperature resistant insulating material and is arranged in a spiral shape on the outer wall of the rotor 601. The number of winding layers is set according to the power requirements of the motor. Each winding 602 is tightly fitted with a small heat dissipation gap. The stator 607 is provided on the outside of the rotor 601, and a suitable air gap is maintained between the stator 607 and the rotor 601 to ensure that the motor can still operate stably in high-temperature environment and improve the safety and reliability of the motor.

[0039] Furthermore, such as Figure 5 and Figure 7As shown, the housing 1 is an explosion-proof shell, manufactured using a one-piece molding process. Multiple heat dissipation fins 605 are evenly distributed along the circumference of the outer wall of the housing 1. Multiple wave-shaped heat dissipation fins 609 are arranged inside the fan shroud 2, with the center of the cross-section of the fan shroud 2 as the center, evenly distributed along the circumference. The one-piece molding structure of the explosion-proof shell 1 effectively prevents explosions caused by electrical sparks or high temperatures inside the motor, ensuring safe operation. The heat dissipation fins 605 can more effectively dissipate heat from inside the housing 1 to the surrounding environment, and the wave-shaped heat dissipation fins 609 increase the contact area with air, more efficiently carrying away heat during airflow. Together with the heat dissipation fins 605 of the housing 1, they further improve the overall heat dissipation performance of the motor.

[0040] Furthermore, such as Figure 5 As shown, there are multiple heat dissipation channels 606, and these multiple heat dissipation channels 606 are evenly distributed along the circumference with the center of the cross section of the housing 1 as the center. One end of the heat dissipation channel 606 is connected to the sealing groove 402. Through the multiple heat dissipation channels 606, the heat dissipation channels 606 and the external heat dissipation fins 605 of the housing 1 can form a convection heat dissipation system. Combined with the thermal conductivity of the aluminum alloy housing 1, the conflict between sealing and heat dissipation is resolved.

[0041] Working principle: The sealing protrusion 401 on the end cover 3 has a stepped design, which matches the size of the sealing groove 402 on the housing 1 and fits tightly. The multi-layer concave-convex structure forms airflow damping, effectively preventing dust and gas from entering the housing 1. At the same time, the O-ring sealing gasket 403 and waterproof gasket 404 set at the connection between the end cover 3 and the housing 1 are made of nitrile rubber and selectively hydrogenated to improve performance. They have high and low temperature resistance and corrosion resistance, and can fit tightly to both, blocking the penetration of the medium and ensuring good sealing inside the motor. Meanwhile, the end cover 3 is engaged with the slot 406 of the housing 1 by the locking block 405. The locking block 405 can be inserted into the slot 406 and the end cover 3 can be rotated to lock it in. The two elastic gaskets in the slot 406 are also engaged. 407 is pressed, and the elastic force of the elastic gasket 407 clamps and fixes the block 405, initially fixing and enhancing the sealing. In addition, the bolt 408 passes through one side of the housing 1 and the end cover 3 and is fixed with the nut 409, further strengthening the fixation and ensuring the sealing effect to prevent the intrusion of external substances. The bearing seat 501 is fixed on the end cover 3, and the low-noise precision ball bearing 503 installed inside it has a precise ball arrangement and a grease circulation channel structure between the inner and outer rings, which reduces the coefficient of friction, reduces friction noise, and improves service life. A buffer pad 502 is set between the bearing seat 501 and the end cover 3 to buffer the transmission of vibration. The housing 1 is made of aluminum alloy, which can weaken resonance noise. Flame-retardant sound-absorbing cotton 5 is evenly pasted inside. 04 Completely covers the internal area, absorbing internal electromagnetic noise and airflow noise, further reducing the noise generated during motor operation. The outer wall of the rotor 601 is wound with high-temperature resistant insulating material windings 602, which are closely arranged and have small heat dissipation gaps to ensure stable operation of the motor in high-temperature environments. The fan 603 on one side of the rotor 601 drives the blades 604 to rotate, accelerating airflow. The blades 604 adopt a streamlined structure to reduce airflow disturbance noise and improve heat dissipation efficiency. The shell 1 is a one-piece molded explosion-proof shell with uniformly distributed heat dissipation fins 605 on the surface, which can dissipate internal heat to the surrounding environment. Multiple heat dissipation channels 606 are evenly distributed along the central circumference of the cross-section of the shell 1, with one end connected to the sealing groove 402, and dissipating heat from the heat dissipation channel. The heat fins 605 form a convection cooling system, which, in conjunction with the thermal conductivity of the aluminum alloy shell 1, resolves the conflict between sealing and heat dissipation. It also prevents explosion accidents caused by electrical sparks or high temperatures inside the motor. Furthermore, the wave-shaped heat dissipation fins 609 inside the fan shroud 2 increase the contact area with air, allowing for more efficient heat removal during airflow. Together with the heat dissipation fins 605 of the shell 1, they further enhance the overall heat dissipation performance of the motor. The heat conduction plate 608, placed between the stator 607 and the shell 1, can quickly conduct the heat generated by the stator 607 to the shell 1. With the help of the large heat dissipation area of ​​the shell 1 and its heat dissipation fins 605 and other structures, the heat is dissipated to the surrounding environment more quickly, effectively improving the motor's heat dissipation efficiency and ensuring stable motor operation.

[0042] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A sealed, low-noise, explosion-proof motor, comprising a housing (1), characterized in that: A fan cover (2) is fixedly connected to the top of the housing (1), an end cap (3) is fixedly connected to one side of the housing (1), a sealing assembly (4) is fixedly connected to one side of the end cap (3), a noise reduction assembly (5) is fixedly connected to one side of the end cap (3), an explosion-proof heat dissipation assembly (6) is fixedly connected to the outer wall of the housing (1), a speed reducer (7) is fixedly connected to one side of the end cap (3), the sealing assembly (4) includes a sealing protrusion (401), and the sealing protrusion (401) is fixed to one side of the end cap (3), the housing A sealing groove (402) is provided on one side of the body (1), a sealing gasket (403) is provided on one side of the housing (1), a waterproof gasket (404) is provided on one side of the end cap (3), a locking block (405) is fixedly connected to one side of the end cap (3), a locking groove (406) is provided on one side of the housing (1), an elastic gasket (407) is fixedly connected inside the locking groove (406), a bolt (408) is provided on the outer wall of the housing (1), and a nut (409) is threaded to one end of the bolt (408).

2. The sealed, low-noise, explosion-proof motor according to claim 1, characterized in that: The end cap (3) forms a sealing structure through a sealing protrusion (401) and a sealing groove (402). The sealing protrusion (401) is a stepped design, and the outer diameter of the sealing protrusion (401) matches the inner diameter of the sealing groove (402). The outer wall of the sealing protrusion (401) is fitted to the inner wall of the sealing groove (402).

3. The sealed, low-noise, explosion-proof motor according to claim 1, characterized in that: The end cap (3) forms a locking structure with the slot (406) through the locking block (405), and one end of the locking block (405) extends into the slot (406) for connection, and two elastic pads (407) provided inside the slot (406) are attached to both sides of the locking block (405).

4. The sealed, low-noise, explosion-proof motor according to claim 1, characterized in that: The noise reduction component (5) includes a bearing seat (501), and the bearing seat (501) is fixed on one side of the end cover (3). A buffer pad (502) is fixedly connected to one side of the bearing seat (501). A bearing (503) is fixedly connected inside the bearing seat (501). Sound-absorbing cotton (504) is provided inside the housing (1).

5. A sealed, low-noise, explosion-proof motor according to claim 4, characterized in that: The bearing (503) is a low-noise precision ball bearing (503) with precisely arranged balls and a grease circulation channel structure between the inner and outer rings, and is stably installed inside the bearing seat (501).

6. A sealed, low-noise, explosion-proof motor according to claim 4, characterized in that: The shell (1) is made of aluminum alloy and has a hollow cylindrical shape. Flame-retardant sound-absorbing cotton (504) is evenly pasted inside the shell (1) by adhesive. The flame-retardant sound-absorbing cotton (504) completely covers the internal area of ​​the shell (1).

7. A sealed, low-noise, explosion-proof motor according to claim 1, characterized in that: The explosion-proof heat dissipation assembly (6) includes a rotor (601), which is located inside the housing (1). The outer wall of the rotor (601) is fixedly connected to a winding (602). A fan (603) is fixedly connected to one side of the rotor (601). A blade (604) is fixedly connected to the outer wall of the fan (603). A heat dissipation fin (605) is fixedly connected to the outer wall of the housing (1). A heat dissipation channel (606) is opened inside the housing (1). A stator (607) is provided inside the housing (1). A heat conduction plate (608) is provided between the stator (607) and the housing (1). A wave-shaped heat dissipation fin (609) is fixedly connected to the inner wall of the fan cover (2).

8. A sealed, low-noise, explosion-proof motor according to claim 7, characterized in that: The winding (602) is made of high temperature resistant insulating material and is arranged in a spiral shape on the outer wall of the rotor (601). The number of winding layers is set according to the power requirements of the motor. Each winding (602) is tightly fitted with a small heat dissipation gap. The rotor (601) is provided with a stator (607) on the outside, and a suitable air gap is maintained between the stator (607) and the rotor (601).

9. A sealed, low-noise, explosion-proof motor according to claim 7, characterized in that: The shell (1) is an explosion-proof shell, which is made by one-piece molding process. Multiple heat dissipation fins (605) are provided on the surface and are evenly distributed along the circumferential direction of the outer wall of the shell (1). Multiple wave-shaped heat dissipation fins (609) are provided inside the shroud (2), and the multiple wave-shaped heat dissipation fins (609) are evenly distributed along the circumferential direction with the center of the cross section of the shroud (2) as the center.

10. A sealed, low-noise, explosion-proof motor according to claim 7, characterized in that: The number of heat dissipation channels (606) is multiple, and the multiple heat dissipation channels (606) are evenly distributed along the circumference with the center of the cross section of the shell (1) as the center, and one end of the heat dissipation channel (606) is connected to the sealing groove (402).

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