Sealed low-noise explosion-proof motor

Abstract

The invention relates to the technical field of explosion-proof motors, and discloses a sealed low-noise explosion-proof motor which comprises a motor body, a sealing sleeve fixedly connected to the top of the motor body, an outer sleeve shell arranged in the sealing sleeve, an inner sleeve shell fixedly connected to the interior of the sealing sleeve, and a locking ring slidably connected to the exterior of the inner sleeve shell. The connecting piece comprises an initial position and a set position, when the connecting piece is located at the initial position, the outer sleeve shell and the wiring tube plate are fixed through the locking ring and the locking block respectively, when the connecting piece is located at the set position, locking of the outer sleeve shell and the wiring tube plate is relieved, separation is completed at the moment, and the outer sleeve shell can be rotated to adjust the angle. By simply operating the vertical position of the connecting piece, unlocking and re-locking of the outer sleeve shell and the wiring tube plate can be rapidly achieved, the whole structure does not need to be dismantled, production line stagnation caused by direction adjustment of the wiring box is effectively avoided, the angle position of the outer sleeve shell can be rapidly adjusted, and the wiring box adapts to a complex working environment; and variable equipment layout requirements are met.

Description

Technical Field

[0001] The invention relates to the technical field of explosion-proof motors, and in particular to a sealed low-noise explosion-proof motor. Background Art

[0002] Explosion-proof motors are special motors used in hazardous environments such as flammable and explosive gases and dust. Through special structural design and manufacturing technology, they have low noise and explosion-proof properties, effectively preventing electric sparks and high temperatures generated inside the motor from causing external explosions, ensuring safe and reliable operation in hazardous places. They are widely used in petrochemical, coal and other industries.

[0003] However, in the prior art, the junction box of the explosion-proof motor is a component that connects the explosion-proof motor and the power supply. Its structure is mainly composed of a terminal plate, an outer shell and a cover plate. The bottom of the outer shell is placed in the sealing sleeve at the top of the motor. It is fixed in the sealing sleeve by screwing screws into the sealing sleeve to achieve stability and ensure the sealing of the outer shell. The terminal plate is connected to the cable and fixed in the outer shell by screws. The outer shell is then sealed with a cover plate. In the mining working surface underground in the coal mine, the space is narrow and various facilities such as mining equipment are closely intertwined, which severely compresses the working space. As the mining process continues to advance, the equipment layout must also change dynamically, causing the cable connection position to change. At this time, facing the need to change the direction of the junction box, first of all, the junction box must be removed from the motor as a whole, so three disassembly and assembly operations are required, namely, the top plate and the terminal plate. To dismantle it, it is necessary to pull the terminal plate upwards in order to reach and remove the screws used to fix the outer shell before the outer shell angle can be rotated and adjusted. After the rotation and adjustment, it is necessary to install it step by step, which is very inconvenient and affects the progress of work. In addition, the lighting conditions underground are extremely dim, and the light provided by the lighting equipment is limited. Coupled with the narrow operating space, the removed screws are easily lost and need to be carefully stored. At the same time, it is difficult for workers to quickly find the corresponding screws and screw installation positions, as well as the focus points of the tools, which increases the time required for disassembly and assembly, resulting in the production line being unable to work in time, affecting subsequent operations. At the same time, the angle adjustment of the outer shell will be limited by the connection point between the outer shell and the sealing sleeve, so that the junction box of the explosion-proof motor can only be rotated ninety degrees, which is difficult to meet the complex and changeable equipment layout requirements underground in coal mines, resulting in poor flexibility in the direction adjustment of the junction box.

[0004] To this end, a sealed low-noise explosion-proof motor is proposed, which enables the wiring position to be quickly adjusted and the layout to be efficiently coordinated. Summary of the invention

[0005] The purpose of the present invention is to provide a sealed low-noise explosion-proof motor to solve the problem that the wiring position of the explosion-proof motor cannot be quickly adjusted according to layout requirements.

[0006] The technical solution of the present invention is: a sealed low-noise explosion-proof motor, including a machine body, and further including a sealing sleeve fixedly connected to the top of the machine body, an outer sleeve shell arranged inside the sealing sleeve, an inner sleeve shell fixedly connected inside the sealing sleeve, a locking ring slidably connected to the outside of the inner sleeve shell, a shaft sleeve fixedly connected between the outer sleeve shell and the inner sleeve shell, a turntable rotatably connected inside the outer sleeve shell, a wiring pipe plate fixedly connected inside the sealing sleeve, a connecting sleeve and a locking block slidably connected inside the outer sleeve shell, a cover plate snap-connected to the top of the outer sleeve shell, an outer sealing sleeve fixedly connected to the outside of the sealing sleeve, a connecting member slidably connected inside the sealing sleeve, and a rotating member rotatably connected to the outer sealing sleeve. Both the locking ring and the inner sleeve shell are located below the outer sleeve shell. The connecting member includes an initial position and a set position. When the connecting member is in the initial position, the outer sleeve shell and the wiring pipe plate are fixed by the locking ring and the locking block respectively. When the connecting member is in the set position, the locking of the outer sleeve shell and the wiring pipe plate is released.

[0007] Further, an outer wire pipe is arranged on the outside of the outer sleeve shell. A plurality of indicating marks are arranged on the outer wall of the outer sleeve shell at equal angles. A guide plate is fixedly connected inside the outer sleeve shell. A plurality of round holes are opened at equal angles at the bottom of the outer sleeve shell. A first square notch is opened on one side of the outer sleeve shell close to the connecting member. A plurality of elastic semi-circles are arranged on the outer sleeve shell at equal angles.

[0008] Further, a guide strip and a support strip are arranged inside the inner sleeve shell. A second square notch is opened on one side of the inner sleeve shell close to the connecting member. The first square notch and the second square notch are the same in size and shape. The top of the support strip is always in contact with the bottom of the outer sleeve shell.

[0009] Further, the locking ring includes a circular ring slidably connected to the outside of the guide strip, and a plurality of round bars arranged at equal angles and fixedly connected to the top of the circular ring. A square groove is opened on the circular ring. The round bars are the same in size and shape as the round holes.

[0010] Further, the top of the wiring pipe plate is located above the guide plate. A plurality of locking grooves are opened on the wiring pipe plate at equal angles. The number of the indicating marks, the round holes, the elastic semi-circles, the round bars and the locking grooves is equal.

[0011] Further, straight notches are opened on the guide plate at equal angles. The turntable is located below the guide plate. Guide inclined grooves are opened on the turntable at equal angles. A pressure-receiving inclined groove is opened on the outer wall of the turntable close to the connecting member. The bottom of the locking block is circular and penetrates through the straight notches and the guide inclined grooves. The number of the locking blocks, the straight notches and the guide inclined grooves is equal.

[0012] Further, the connecting member includes a straight plate slidably connected inside the outer sleeve, a short plate fixedly connected to the top of the straight plate, and a long plate fixedly connected to the bottom of the straight plate. An arc groove is formed in the straight plate. One end of the short plate is located inside the connecting sleeve, and the long plate penetrates through the second square notch and the square groove.

[0013] Further, the rotating member includes a rotating handle rotatably connected inside the outer sleeve, and a convex shaft fixedly connected to one side of the rotating member. The convex shaft is located inside the arc groove, and a screw is connected between the outer sleeve and the rotating handle.

[0014] Further, the connecting sleeve includes an outer sleeve ring slidably connected inside the outer shell, and an inner sleeve ring fixedly connected to the outer sleeve ring. The inner sleeve ring is located inside the outer shell. The outer sleeve ring extends to the inside of the outer shell and is connected to the inner sleeve ring near the first square notch. A round shaft is provided on the inner side of the inner sleeve ring, and the round shaft is located inside the compression inclined groove.

[0015] Further, a header is provided on the outside of the sealing sleeve, and a plurality of semi-circular grooves are equiangularly formed at the top end of the sealing sleeve. The number of the semi-circular grooves is the same as that of the elastic semi-circles.

[0016] Advantages of the present invention: 1. By simply operating the up and down position of the connecting member, the unlocking and relocking of the outer shell and the wiring tube plate can be quickly realized without dismantling the whole structure. The operation is simple and intuitive, reducing the operation difficulty of workers, saving operation time, significantly improving work efficiency, effectively avoiding the stagnation of the production line caused by the adjustment of the wiring box direction, quickly adjusting the angular position of the outer shell, adapting to complex working environments, and meeting the requirements of variable equipment layouts. 2. Effective locking is achieved by the way of the locking ring closely fitting with the bottom of the outer shell and the way of a plurality of locking blocks inserted into the locking grooves of the wiring tube plate. During long-term use, it is not easy to have a malfunction phenomenon caused by aging and other faults, and can continuously and stably ensure the normal operation of the motor, providing a solid guarantee for the reliable operation of the equipment in harsh environments, avoiding the electronic equipment being easily affected by electromagnetic interference, humid water vapor, dust, etc., reducing the environmental impact, and improving the applicability of the equipment in different harsh environments.

[0017] 3. Workers only need to remove the screw between the outer sleeve and the rotating handle and rotate the rotating handle to achieve unlocking and locking. This process can be operated without learning. The equipment relies on mechanical structures, making fault troubleshooting simple and can be maintained by existing maintenance means. The maintenance cost is low, and it can be quickly combined with existing motors for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structural schematic diagram of the first perspective of the present invention; Figure 2 It is the top view of the overall structure of the present invention; Figure 3 For the present invention Figure 2 The cross-sectional view taken along line A-A in it; Figure 4 It is the structural schematic diagram of the locking block of the present invention; Figure 5 It is the structural schematic diagram of the wiring tube plate of the present invention; Figure 6 It is the structural schematic diagram of the outer housing of the present invention; Figure 7 It is the structural schematic diagram of the turntable of the present invention; Figure 8 It is the structural schematic diagram of the locking ring of the present invention; Figure 9 It is the structural schematic diagram of the connecting sleeve of the present invention; Figure 10 For the present invention Figure 5 The enlarged schematic diagram at position B in it; Figure 11 For the present invention Figure 9 The enlarged schematic diagram at position C in it.

[0019] In the figure: 1. Body; 2. Sealing sleeve; 21. Header; 22. Semi-circular groove; 3. Outer housing; 31. Outer wire tube; 32. Indicator mark; 33. Guide plate; 331. Straight notch; 34. Round hole; 35. First square notch; 36. Elastic semi-circle; 4. Inner housing; 41. Guide strip; 42. Support strip; 43. Second square notch; 5. Locking ring; 51. Ring; 511. Square groove; 52. Round bar; 6. Bush; 7. Turntable; 71. Guide inclined groove; 72. Compressed inclined groove; 8. Wiring tube plate; 81. Locking groove; 9. Connecting sleeve; 91. Outer sleeve ring; 92. Inner sleeve ring; 921. Round shaft; 10. Locking block; 11. Cover plate; 12. Outer sealing sleeve; 13. Connecting piece; 131. Straight plate; 130. Arc groove; 132. Short plate; 133. Long plate; 14. Rotating piece; 141. Rotating handle; 142. Convex shaft. Detailed implementation manners

[0020] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following will make a detailed description of the specific implementation manners of the present invention in conjunction with the accompanying drawings of the specification.

[0021] Refer to Figures 1 - 11, for an embodiment of the present invention, a sealed low-noise explosion-proof motor is provided, which includes a machine body 1, and also includes a sealing sleeve 2 fixedly connected to the top of the machine body 1, an outer sleeve 3 arranged inside the sealing sleeve 2, an inner sleeve 4 fixedly connected to the inside of the sealing sleeve 2, a locking ring 5 slidably connected to the outside of the inner sleeve 4, a shaft sleeve 6 fixedly connected between the outer sleeve 3 and the inner sleeve 4, a turntable 7 rotatably connected inside the outer sleeve 3, a wiring pipe plate 8 fixedly connected to the inside of the sealing sleeve 2, a connecting sleeve 9 and a locking block 10 slidably connected inside the outer sleeve 3, a cover plate 11 snap-connected to the top of the outer sleeve 3, an outer seal 12 fixedly connected to the outside of the sealing sleeve 2, a connecting member 13 slidably connected to the inside of the sealing sleeve 2, and a rotating member 14 rotatably connected to the outer seal 12. Both the locking ring 5 and the inner sleeve 4 are located below the outer sleeve 3. The connecting member 13 includes an initial position and a set position. When the connecting member 13 is in the initial position, the outer sleeve 3 and the wiring pipe plate 8 are fixed respectively by the locking ring 5 and the locking block 10. When the connecting member 13 is in the set position, the locking of the outer sleeve 3 and the wiring pipe plate 8 is released, and at this time, the separation is completed. The outer sleeve 3 can be rotated to adjust the angle. When the angle of the outer sleeve 3 needs to be adjusted, the worker can operate the rotating member 14 to drive the connecting member 13 to move, thereby unlocking the outer sleeve 3 and the wiring pipe plate 8, and then rotation can be carried out. According to the actual equipment layout requirements, the outer sleeve 3 can be flexibly changed at multiple angles, improving the adaptability to complex environments, with convenient and labor-saving operation, ensuring reasonable cable connection and normal operation of the equipment.

[0022] Specifically, moving the connecting member 13 from the initial position to the set position can unlock the outer sleeve 3 and the wiring pipe plate 8, and moving in the reverse direction, that is, moving the connecting member 13 from the set position to the initial position, can lock the outer sleeve 3 and the wiring pipe plate 8. In addition, when the connecting member 13 moves from the initial position to the set position, it moves downward, and when the connecting member 13 moves from the set position to the initial position, it moves upward.

[0023] It can be understood that the machine body 1 is made of high-stability steel, providing a solid support foundation for the whole motor. At the same time, at the joints of components, rubber composite materials are placed to form a multi-layer sealing structure, effectively reducing the vibration and noise during the operation of the motor. The top of the wiring pipe plate 8 is a wiring end plate, and the bottom of the wiring end plate is a hard pipe. The cables in the machine body 1 are located inside the pipe and connected to the wiring end plate. The hard pipe and the wiring end plate form the wiring pipe plate 8, and the hard pipe provides support for the wiring end plate, so that the wiring end plate does not need to be completely supported by the outer sleeve 3.

[0024] Refer to Figures 3 - 7, an outer conduit 31 is provided on the outside of the outer casing 3, which can ensure the smooth passage of the cable. At the same time, a sealing structure is added to prevent foreign impurities from invading. A plurality of indicating marks 32 are arranged at equal angles on the outer wall of the outer casing 3. A guiding plate 33 is fixedly connected inside the outer casing 3. A plurality of round holes 34 are opened at equal angles at the bottom of the outer casing 3. A first square notch 35 is opened on one side of the outer casing 3 close to the connecting member 13. A plurality of elastic semi-circles 36 are arranged at equal angles on the outer casing 3.

[0025] Among them, a reflective sheet of fluorescent yellow is pasted on the surface of the indicating mark 32 to better attract the attention of the operator.

[0026] Refer to Figures 3 - 8 , a guiding strip 41 and a supporting strip 42 are arranged inside the inner casing 4. A second square notch 43 is opened on one side of the inner casing 4 close to the connecting member 13. The first square notch 35 and the second square notch 43 are the same in size and shape. The top of the supporting strip 42 is always in contact with the bottom of the outer casing 3, so that the bottom of the outer casing 3 is always supported by the supporting strip 42 and will not move downward. This effectively prevents the outer casing 3 from moving downward due to factors such as its own weight, motor operation vibration or external impact force. At the same time, a bushing 6 fixedly connected between the outer casing 3 and the inner casing 4 makes the outer casing 3 and the inner casing 4 closely connected, and the outer casing 3 can rotate.

[0027] Refer to Figures 3 - 8 , the locking ring 5 includes a circular ring 51 slidably connected to the outside of the guiding strip 41, and a plurality of circular bars 52 arranged at equal angles and fixedly connected to the top of the circular ring 51. The circular ring 51 is restricted by the guiding strip 41 to only move up and down. A square groove 511 is opened on the circular ring 51. The circular bars 52 are the same in size and shape as the round holes 34. When the connecting member 13 is in the initial position, the circular bars 52 are located inside the round holes 34, that is, the circular bars 52 are like the tenons in the mortise and tenon structure and are closely matched with the round holes 34. At this time, the outer casing 3 is fixed by a plurality of circular bars 52, restricting the rotation of the outer casing 3, effectively preventing the outer casing 3 from unnecessary shaking or displacement during the operation of the motor when the angle does not need to be adjusted, and ensuring the stability of the entire motor structure.

[0028] Refer to Figures 2 - 7, the top of the wiring tube plate 8 is located above the guide plate 33. A plurality of locking grooves 81 are equiangularly formed on the wiring tube plate 8. The number of the indicating mark 32, the round hole 34, the elastic semi-circle 36, the round bar 52 and the locking grooves 81 is equal, and the number can be twelve. Therefore, the equal-angle degrees are also the same, all being thirty degrees. Therefore, when adjusting the angle of the outer casing 3, it can only be adjusted by thirty degrees at a time. If more angle adjustments of the outer casing 3 are required, the number of corresponding components needs to be increased. At the same time, when the outer casing 3 rotates, the turntable 7 and the locking block 10 located inside the outer casing 3 will rotate synchronously, and the wiring tube plate 8 will not rotate. When the locking block 10 is located in the locking groove 81, the wiring tube plate 8 will be locked and cannot move. Therefore, when wanting to adjust the angle of the outer casing 3, first, the locking block 10 needs to be separated from the wiring tube plate 8. In addition, locking grooves 81 are formed on both the upper and lower sides of the top of the wiring tube plate 8, and the top of the locking block 10 is C-shaped and the bottom is a circular shaft body, so that the wiring tube plate 8 can be fixed from two positions above and below, and the wiring tube plate 8 is locked by a plurality of locking blocks 10.

[0029] Refer to Figures 2 - 8 , straight groove openings 331 are equiangularly formed on the guide plate 33. The turntable 7 is located below the guide plate 33. Guide inclined grooves 71 are equiangularly formed on the turntable 7. A pressure-receiving inclined groove 72 is formed on the outer wall of the turntable 7 near the connecting member 13. The bottom of the locking block 10 is circular and penetrates through the straight groove opening 331 and the guide inclined groove 71. The number of the locking blocks 10, the straight groove openings 331 and the guide inclined grooves 71 can be four.

[0030] Specifically, when the connecting member 13 moves up and down, it will squeeze the turntable 7 through the connecting sleeve 9. When the pressure-receiving inclined groove 72 of the turntable 7 is squeezed by the connecting sleeve 9, the turntable 7 will rotate. That is, when the connecting member 13 moves down, the turntable 7 can rotate forward. On the contrary, when the connecting member 13 moves up, the turntable 7 rotates in reverse. Since the bottom of the locking block 10 is located in the guide inclined groove 71, the rotating turntable 7 will push the bottom of the locking block 10, causing the locking block 10 to move. At the same time, the locking block 10 is restricted by the straight groove opening 331, so that the four locking blocks 10 move along the path of the straight groove opening 331, thereby controlling the four locking blocks 10 to lock the wiring tube plate 8.

[0031] Refer to Figures 3 - 10, the connecting member 13 includes a straight plate 131 slidably connected inside the outer sleeve 12, a short plate 132 fixedly connected to the top of the straight plate 131, and a long plate 133 fixedly connected to the bottom of the straight plate 131. An arc groove 130 is formed on the straight plate 131. One end of the short plate 132 is located inside the connecting sleeve 9, and the long plate 133 penetrates through the second square notch 43 and the square groove 511. When the straight plate 131 moves up and down, it will synchronously drive the short plate 132 and the long plate 133. Further, the long plate 133 pulls the ring 51 to move synchronously. At the same time, the long plate 133 penetrates through the first square notch 35, and the short plate 132 pulls the connecting sleeve 9 to move. Among them, when the long plate 133 moves, it can only move up and down within the second square notch 43 and the first square notch 35. By using the second square notch 43 and the first square notch 35, the two restrict the long plate 133, further enabling the long plate 133 and the straight plate 131 to only move up and down.

[0032] Referring to Figures 3 - 10 , the rotating member 14 includes a rotating handle 141 rotatably connected inside the outer sleeve 12, and a convex shaft 142 fixedly connected to one side of the rotating member 14. The convex shaft 142 is located inside the arc groove 130. A screw is connected between the outer sleeve 12 and the rotating handle 141, and the rotating handle 141 is fixed by the screw. When the screw is removed and the rotating handle 141 is rotated, the convex shaft 142 rotates. Since the convex shaft 142 is located inside the arc groove 130, the straight plate 131 is pressed to move. The rotation direction of the rotating handle 141 controls the moving direction of the straight plate 131, and the straight plate 131 thus moves up and down in the corresponding direction. By using the up and down movement of the straight plate 131 to synchronously drive the short plate 132 and the long plate 133, the connecting sleeve 9 and the locking ring 5 as a whole move up and down. When the ring 51 and the round bar 52 at the top move down, the round bar 52 is separated from the round hole 34, thereby unlocking the outer shell 3.

[0033] In addition, the external fitting surfaces of the outer sleeve 12, the outer shell 3, and the connecting sleeve 9 have the same shape, thus ensuring sufficient sealing effect.

[0034] Referring to Figures 3 - 11 , the connecting sleeve 9 includes an outer sleeve ring 91 slidably connected inside the outer shell 3, and an inner sleeve ring 92 fixedly connected to the outer sleeve ring 91. The inner sleeve ring 92 is located inside the outer shell 3. Near the first square notch 35, the outer sleeve ring 91 extends into the inside of the outer shell 3 to be connected to the inner sleeve ring 92. A round shaft 921 is provided on the inner side of the inner sleeve ring 92, and the round shaft 921 is located inside the pressure receiving inclined groove 72.

[0035] Specifically, when the outer shell 3 rotates, it will drive the internal structure to move, and at the same time drive the outer sleeve ring 91 and the inner sleeve ring 92 to rotate. Thus, when the outer shell 3 adjusts its position, the short plate 132 can always be located inside the outer sleeve ring 91.

[0036] Referring to Figures 1 - 11, a header 21 is provided on the outside of the sealing sleeve 2. Observe whether the observation header 21 is symmetrical with the indicating mark 32 to ensure the accurate locking of the outer casing 3 and the wiring tube plate 8. A plurality of semi-circular grooves 22 are equally angled at the top of the sealing sleeve 2. The number of semi-circular grooves 22 is the same as that of the elastic semi-circles 36. Usually, the elastic semi-circles 36 are located in the semi-circular grooves 22. When the outer casing 3 is rotated, the elastic semi-circles 36 will move synchronously, causing resistance to the rotation of the outer casing 3 until the elastic semi-circles 36 are deformed by the extrusion of the sealing sleeve 2. When the outer casing 3 rotates thirty degrees each time, the elastic semi-circles 36 will fit with the semi-circular grooves 22 again, which can significantly increase the resistance during the rotation of the outer casing 3. At this time, it is necessary to break through this resistance and squeeze the elastic semi-circles 36 to deform, further realizing the accurate locking of the outer casing 3 and the wiring tube plate 8.

[0037] The working principle of the present invention is as follows: During the normal operation stage of the motor, the header 21 outside the sealing sleeve 2 is aligned with the indicating mark 32 outside the outer casing 3, and the whole connecting member 13 is in the initial position. At this time, the straight plate 131 is at a higher position, and the rotary handle 141 is locked. Through the tight fit between the long plate 133 and the square groove 511 of the ring 51, the round bar 52 is fixed in the round hole 34 at the bottom of the outer casing 3, firmly fixing the outer casing 3 from below. At the same time, under the extrusion of the turntable 7, the locking block 10 is located in the locking groove 81 of the wiring tube plate 8, locking the wiring tube plate 8 so that it cannot move. In addition, the elastic semi-circles 36 are located in the semi-circular grooves 22 at the top of the sealing sleeve 2, and the two are closely attached.

[0038] When the angle of the outer casing 3 needs to be adjusted, the operator first needs to remove the screw connecting the outer seal 12 and the rotary handle 141, and then rotate the rotary handle 141. As the rotary handle 141 rotates, the convex shaft 142 on one side of the rotary handle 141 pushes the straight plate 131 downward. When the straight plate 131 moves downward, it synchronously drives the short plate 132 and the long plate 133. The long plate 133 pulls the ring 51 downward, causing the round bar 52 to separate from the round hole 34, releasing the fixation of the bottom of the outer casing 3. At the same time, the short plate 132 synchronously pulls the outer sleeve ring 91 downward. The outer sleeve ring 91 drives the inner sleeve ring 92 and its round shaft 921 to move synchronously. The round shaft 921 is used to squeeze the compressed inclined groove 72, prompting the turntable 7 to rotate. Since the bottom of the locking block 10 is located in the guiding inclined groove 71 of the turntable 7 and is restricted by the straight groove opening 331 on the guiding plate 33, the rotation of the turntable 7 pushes the locking block 10 to move back along the path of the straight groove opening 331, separating the locking block 10 from the locking groove 81 on the wiring tube plate 8, thus releasing the locking of the wiring tube plate 8. At this time, both the outer casing 3 and the wiring tube plate 8 are in the unlocked state, and the outer casing 3 can be rotated. The operator can conveniently rotate and adjust the angle of the outer casing 3 according to the indicating mark 32. The rotation angle each time is determined according to the requirements of the components, that is, the single rotation angle of the present invention is thirty degrees to achieve precise angle adjustment. After the outer housing 3 is adjusted to the required angle, it is necessary to align the header 21 outside the sealing sleeve 2 with the indicating mark 32 outside the outer housing 3 at this time. At this time, the operator reversely rotates the handle 141, and the convex shaft 142 reversely pushes the straight plate 131 to move upward in the arc groove 130. The straight plate 131 drives the short plate 132 and the long plate 133 to move upward. The long plate 133 pulls the ring 51 to move upward, so that the round bar 52 is inserted into the round hole 34 again, and the outer housing 3 is fixed from the bottom again. At the same time, the whole connecting sleeve 9 moves upward under the pulling of the short plate 132, and its round shaft 921 reversely presses the pressure receiving inclined groove 72, so that the turntable 7 rotates reversely. The reverse rotation of the turntable 7 passes through the guiding inclined groove 71, and pushes the locking block 10 to move along the straight groove opening 331 towards the wiring tube plate 8, so that the locking block 10 re-enters the locking groove 81 on the wiring tube plate 8, and the wiring tube plate 8 is locked again.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A sealed low-noise explosion-proof motor, comprising a body (1), characterized in that: It further includes a sealing sleeve (2) fixedly connected to the top of the body (1), an outer sleeve (3) arranged inside the sealing sleeve (2), an inner sleeve (4) fixedly connected inside the sealing sleeve (2), a locking ring (5) slidably connected to the outside of the inner sleeve (4), a shaft sleeve (6) fixedly connected between the outer sleeve (3) and the inner sleeve (4), a turntable (7) rotatably connected inside the outer sleeve (3), a wiring pipe plate (8) fixedly connected inside the sealing sleeve (2), a connecting sleeve (9) and a locking block (10) slidably connected inside the outer sleeve (3), a cover plate (11) snap-connected to the top of the outer sleeve (3), an outer sealing sleeve (12) fixedly connected to the outside of the sealing sleeve (2), a connecting member (13) slidably connected inside the sealing sleeve (2), and a rotating member (14) rotatably connected to the outer sealing sleeve (12). Both the locking ring (5) and the inner sleeve (4) are located below the outer sleeve (3). The connecting member (13) includes an initial position and a set position. When the connecting member (13) is in the initial position, the outer sleeve (3) and the wiring pipe plate (8) are fixed by the locking ring (5) and the locking block (10) respectively. When the connecting member (13) is in the set position, the locking of the outer sleeve (3) and the wiring pipe plate (8) is released.

2. The sealed low-noise explosion-proof motor according to claim 1, characterized in that: An outer wire pipe (31) is arranged on the outside of the outer sleeve (3). A plurality of indicating marks (32) are arranged on the outer wall of the outer sleeve (3) at equal angles. A guiding plate (33) is fixedly connected inside the outer sleeve (3). A plurality of round holes (34) are opened at equal angles at the bottom of the outer sleeve (3). A first square notch (35) is opened on one side of the outer sleeve (3) close to the connecting member (13). A plurality of elastic semi-circles (36) are arranged on the outer sleeve (3) at equal angles.

3. The hermetically sealed low-noise explosion-proof motor according to claim 2, wherein: A guiding strip (41) and a supporting strip (42) are arranged inside the inner sleeve (4). A second square notch (43) is opened on one side of the inner sleeve (4) close to the connecting member (13). The first square notch (35) and the second square notch (43) are the same in size and shape. The top of the supporting strip (42) is always in contact with the bottom of the outer sleeve (3).

4. The sealed low-noise explosion-proof motor according to claim 3, wherein: The locking ring (5) includes a circular ring (51) slidably connected to the outside of the guiding strip (41), and a plurality of circular bars (52) arranged at equal angles and fixedly connected to the top of the circular ring (51). A square groove (511) is opened on the circular ring (51). The circular bars (52) are the same in size and shape as the round holes (34).

5. The hermetic low-noise explosion-proof motor according to claim 4, wherein: The top of the wiring pipe plate (8) is located above the guiding plate (33). A plurality of locking grooves (81) are opened on the wiring pipe plate (8) at equal angles. The number of the indicating marks (32), the round holes (34), the elastic semi-circles (36), the circular bars (52), and the locking grooves (81) is equal.

6. The sealed low-noise explosion-proof motor according to claim 4, characterized in that: The guide plate (33) is equiangularly provided with straight slots (331). The turntable (7) is located below the guide plate (33). The turntable (7) is equiangularly provided with guide inclined slots (71). A pressure-receiving inclined slot (72) is formed in the outer wall of the turntable (7) near the connecting member (13). The bottom of the locking block (10) is circular and penetrates through the straight slot (331) and the guide inclined slot (71). The number of the locking blocks (10), the straight slots (331) and the guide inclined slots (71) is equal.

7. The hermetically sealed low-noise explosion-proof motor according to claim 4, characterized in that: The connecting member (13) includes a straight plate (131) slidably connected inside the outer sleeve (12), a short plate (132) fixedly connected to the top of the straight plate (131), and a long plate (133) fixedly connected to the bottom of the straight plate (131). An arc slot (130) is formed in the straight plate (131). One end of the short plate (132) is located inside the connecting sleeve (9). The long plate (133) penetrates through the second square slot (43) and the square slot (511).

8. The hermetically sealed low-noise explosion-proof motor according to claim 7, wherein: The rotating member (14) includes a rotating handle (141) rotatably connected inside the outer sleeve (12), and a convex shaft (142) fixedly connected to one side of the rotating member (14). The convex shaft (142) is located inside the arc slot (130). A screw is connected between the outer sleeve (12) and the rotating handle (141).

9. The sealed low-noise explosion-proof motor according to claim 6, characterized in that: The connecting sleeve (9) includes an outer sleeve ring (91) slidably connected inside the outer shell (3), and an inner sleeve ring (92) fixedly connected to the outer sleeve ring (91). The inner sleeve ring (92) is located inside the outer shell (3). The outer sleeve ring (91) extends to the inside of the outer shell (3) and is connected to the inner sleeve ring (92) near the first square slot (35). A circular shaft (921) is arranged on the inner side of the inner sleeve ring (92). The circular shaft (921) is located inside the pressure-receiving inclined slot (72).

10. The sealed low-noise explosion-proof motor according to claim 2, wherein: A header (21) is arranged on the outside of the sealing sleeve (2). The top end of the sealing sleeve (2) is equiangularly provided with a plurality of semi-circular slots (22). The number of the semi-circular slots (22) is the same as that of the elastic semi-circles (36).

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