A fully sealed dust explosion-proof motor

Abstract

The present invention discloses a fully sealed dust explosion-proof motor, which relates to the technical field of motor sealing. The present invention includes an explosion-proof motor main body, a round shaft is rotatably arranged on the inner wall of the explosion-proof motor main body, a wind leaf is fixedly installed on the right side of the round shaft, the wind leaf sucks in gas to cool the inside of the explosion-proof motor main body, so that the explosion-proof motor main body will not be overheated and damaged during operation. A rear cover is arranged on the right side of the explosion-proof motor main body, a machine cover is fixedly installed on the right side of the rear cover, a round opening is formed in the middle of the right side of the machine cover, a square shell is fixedly installed on the right side of the machine cover, an air inlet pipe penetrates and is fixedly installed on the top surface of the square shell, and a T-shaped frame is fixedly installed in the middle of the bottom surface of the square shell. The present invention seals the round opening of the machine cover through a rubber ring, thereby avoiding the need for the explosion-proof motor main body to suspend operation in a dusty environment, resulting in poor operation effect of the explosion-proof motor main body.

Description

Technical Field

[0001] The present invention relates to the technical field of motor sealing, and particularly to a fully-sealed dust explosion-proof motor. Background Art

[0002] A fully-sealed dust explosion-proof motor is a special-purpose motor for safe operation in a dust environment. Its sealing structure can effectively prevent dust from entering the interior of the motor, preventing the dust from contacting the internal electric sparks of the motor, significantly reducing the risk of dust explosion, and reducing the occurrence of explosion accidents.

[0003] The patent with the publication number CN212627437U discloses a dust-proof and explosion-proof motor, which includes an explosion-proof motor body. A fan for cooling the explosion-proof motor is provided on the explosion-proof motor body. An air suction port is formed on the fan. One end of the fan at the air suction port is detachably provided with a flow guide cover. An air inlet is formed on the flow guide cover. A filter element for filtering air is detachably connected to the air inlet. This patent helps to prevent a large amount of dust from being inhaled when the fan extracts external air to cool the explosion-proof motor, thereby causing damage to the explosion-proof motor.

[0004] However, the current dust-proof and explosion-proof motors have the following problems: When this dust-proof and explosion-proof motor is in use, due to the complex working environment of the explosion-proof motor body and a large amount of dust, it is necessary to pause the operation of the explosion-proof motor body. When the dust disperses and the explosion-proof motor body is restarted, the operation effect is not good. Therefore, we have proposed a fully-sealed dust explosion-proof motor. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a fully-sealed dust explosion-proof motor, which solves the problems raised in the above background art.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a fully sealed dust-proof explosion-proof motor, comprising an explosion-proof motor body, the inner wall of the explosion-proof motor body is rotatably provided with a circular shaft, a fan blade is fixedly installed on the right side of the circular shaft, the fan blade draws in gas to cool the inside of the explosion-proof motor body, so that the explosion-proof motor body will not be overheated and damaged during operation, a rear slot cover is provided on the right side of the explosion-proof motor body, a hood is fixed on the right side of the rear slot cover, a circular opening is opened in the middle of the right side of the hood, a square shell is fixed on the right side of the hood, an air intake pipe is passed through and fixed on the top surface of the square shell, a T-shaped frame is fixed in the middle of the bottom surface of the square shell, and the bottom end of the square shell is fixed An electric telescopic rod is fixedly installed on the inner wall of the ring bracket, a disc is fixed on the left side of the telescopic end of the electric telescopic rod, a rubber ring is fixed on the left edge of the disc, a groove ring is fixed in the middle of the left side of the disc, a plurality of notches are provided on the outer wall of the groove ring, and the outer wall of the groove ring is slidably connected with the inner wall of the circular opening of the hood, a dustproof net is fixed on the inner wall of the plurality of notches of the groove ring, the disc is used to press against the circular opening of the hood, so that the hood is in a completely sealed state, the disc drives the groove ring to move to the left, and the groove ring slides to the left in the circular opening of the hood, and in the process of the rubber ring moving to the left, the rubber ring is in contact with the hood, and under the extrusion of the disc, the rubber ring seals the circular opening of the hood.

[0007] According to the above technical solution, the air intake pipe is located above the electric telescopic rod, a square plate is provided at the right end of the electric telescopic rod, the right side of the square plate of the electric telescopic rod is fixedly connected to the left side of the inner wall of the square shell, and the right side of the hood is on the movement trajectory of the left side of the rubber ring.

[0008] According to the above technical solution, the explosion-proof motor body includes an explosion-proof shell, a stator, a front end cover, a rear slot cover, a shaft disc, a round shaft, a rotor and a junction box. The stator is fixedly mounted on the inner wall of the explosion-proof shell, the front end cover is fixedly mounted on the left side of the explosion-proof shell, the rear slot cover is fixedly mounted on the right side of the explosion-proof shell, and a number of air inlets are opened on the right side of the rear slot cover. The shaft disc passes through and is fixedly mounted in the middle of the left side of the front end cover. The round shaft is rotatably mounted on the inner wall of the shaft disc. The right end of the round shaft passes through and is rotatably connected to the left side of the rear slot cover. The rotor is fixedly mounted on the outer wall of the round shaft, and the junction box passes through and is rotatably mounted on the left side of the top surface of the explosion-proof shell.

[0009] According to the above technical solution, the outer wall of the explosion-proof shell is provided with a plurality of heat sinks, the bottom surface of the explosion-proof shell is provided with a support frame, the outer wall of the rotor is wound with a plurality of coils, and the top front of the junction box is provided with an air outlet.

[0010] According to the above technical solution, a secondary sealing device is provided at the top right side of the disc, and the secondary sealing device is used to seal the outlet of the air intake pipe. A stabilizing device is provided in the middle of the outer wall of the secondary sealing device, and the stabilizing device is used to improve the stability of the equipment operation.

[0011] According to the above technical solution, the secondary sealing device includes an H-shaped block, which is fixed to the top right of the disc. An L-shaped hole plate is fixed to the right side of the H-shaped block. A circular opening is provided on the top surface of the L-shaped hole plate. The top surface of the L-shaped hole plate is in sliding contact with the top surface of the square shell. A U-shaped connecting plate is fixed to the right side of the bottom surface of the L-shaped hole plate. An arc plate is fixed to the right side of the top surface of the U-shaped connecting plate. The rubber pad in the arc plate moves below the air inlet pipe, and the rubber pad of the arc plate blocks the cold air with dust in the air inlet pipe from entering the square shell.

[0012] According to the above technical solution, the top surface of the arc plate is in sliding contact with the top surface of the square shell. The arc plate is located on the right side of the L-shaped hole plate. A circular opening is provided on the top surface of the arc plate. A rubber pad is provided on the inner wall of the circular opening of the arc plate.

[0013] According to the above technical solution, a circular shell is fixed to the bottom surface of the arc plate. A spring is fixed to the bottom end inside the circular shell. The end of the spring away from the circular shell is fixed with an arc concave block. A sphere is fixed to the inner wall of the arc concave block. The top surface of the sphere is in contact with the bottom surface of the rubber pad of the arc plate. Under the elastic force of the spring, the spring drives the arc concave block to move upward, the arc concave block drives the sphere to move upward, the sphere presses against the rubber pad of the arc plate to deform, and the sphere is used to push up the rubber pad of the arc plate, and the rubber pad of the arc plate generates deformation, so that the rubber pad of the arc plate is embedded at the air outlet of the air inlet pipe.

[0014] According to the above technical solution, the stabilizing device includes a ring, which is fixed to the middle of the outer wall of the circular shell. A short column is fixed to the middle of the front and back sides of the ring. A U-shaped bracket is fixed to the left side of the inner wall of the square shell. A chute is provided on the middle of the front and back sides of the U-shaped bracket. The outer wall of the short column is in sliding contact with the inner wall of the chute of the U-shaped bracket. A double vertical bracket is fixed to the left side of the U-shaped bracket. The bottom surface of the double vertical bracket is fixedly connected to the bottom end inside the square shell. The short column moves leftward in the chute of the U-shaped bracket, so that the chute of the U-shaped bracket limits the short column, and the arc plate slides closely against the wall surface of the square shell.

[0015] According to the above technical solution, a shell is fixed to one end of the short column away from each other. A filter screen is fixed to the inner wall of the shell. A calcium chloride block is fixedly installed at the bottom end inside the shell. The filter screen is located on one side of the calcium chloride block away from each other. The short column drives the shell to move leftward, and the shell drives the calcium chloride block to move leftward, so that the calcium chloride block contacts the gas in the square shell in a large area during movement. The calcium chloride block absorbs the moisture in the gas, so that there is no large amount of moisture accumulation in the square shell. The calcium chloride block is used to dry the inside of the square shell to prevent the electronic components in the square shell from being affected by moisture.

[0016] The present invention provides a fully sealed dust explosion-proof motor. It has the following beneficial effects:

[0017] (1) In this invention, through the cooperation of an explosion-proof motor main body, a fan blade, a machine cover, a square shell, an air inlet pipe, a T-shaped frame, a ring bracket, an electric telescopic rod, a disc, a rubber ring and a groove ring with a dust-proof net, the telescopic end of the electric telescopic rod drives the disc to move leftward, the disc drives the rubber ring to move leftward, the disc drives the groove ring to move leftward, and the groove ring slides leftward in the circular opening of the machine cover. During the leftward movement of the rubber ring, the rubber ring contacts the machine cover, and under the extrusion of the disc, the rubber ring seals the circular opening of the machine cover, enabling the explosion-proof motor main body to continue operating in a dusty environment, preventing the explosion-proof motor main body from having to suspend operation in a dusty environment, which may lead to poor operating performance of the explosion-proof motor main body.

[0018] (2) Through the setting of the secondary sealing device in this invention, the H-shaped block, the L-shaped hole plate and the U-shaped connecting plate cooperate with the arc plate. The rubber pad in the arc plate moves below the air inlet pipe, and the rubber pad of the arc plate blocks the cold air with dust in the air inlet pipe from entering the square shell, so that the cold air with dust will no longer enter the square shell, enabling the arc plate to seal the air inlet pipe and preventing the cold air with dust from entering the square shell and causing a large amount of dust to accumulate in the square shell.

[0019] (3) Through the setting of the secondary sealing device in this invention, the circular shell, the spring and the arc concave block cooperate with the sphere. Under the elastic force of the spring, the spring drives the arc concave block to move upward, the arc concave block drives the sphere to move upward, and the sphere presses the rubber pad of the arc plate to deform, and the rubber pad of the arc plate is embedded at the air outlet of the air inlet pipe, preventing the air inlet pipe from leaking gas and preventing the leaked gas at the air outlet of the air inlet pipe from entering the square shell and causing too high air pressure in the square shell.

[0020] (4) Through the setting of the stabilizing device in this invention, the ring, the short column and the U-shaped frame cooperate with the double vertical frames. The short column moves leftward in the chute of the U-shaped frame, and the chute of the U-shaped frame limits the short column, enabling the arc plate to slide closely along the wall surface of the square shell, preventing the arc plate from shaking violently and causing unsmooth operation of the equipment.

[0021] (5) Through the setting of the stabilizing device in this invention, the shell and the filter screen cooperate with the calcium chloride block. The short column drives the shell to move leftward, the shell drives the calcium chloride block to move leftward, enabling the calcium chloride block to come into large-area contact with the gas in the square shell during movement, and the calcium chloride block absorbs the moisture in the gas, preventing a large amount of moisture from accumulating in the square shell and preventing the equipment from getting damp due to a large amount of moisture in the square shell. Brief Description of the Drawings

[0022] Figure 1 is a schematic diagram of the whole of this invention;

[0023] Figure 2 is a cross-sectional schematic diagram of the explosion-proof motor main body of this invention;

[0024] Figure 3 is a schematic diagram of the internal components of this invention;

[0025] Figure 4 It is a schematic cross-sectional view at the hood of the present invention;

[0026] Figure 5 For the present invention Figure 4 A partial enlarged schematic view at position A in it;

[0027] Figure 6 It is a schematic view of the secondary sealing device of the present invention;

[0028] Figure 7 For the present invention Figure 6 A partial enlarged schematic view at position B in it;

[0029] Figure 8 It is a schematic view of the stabilizing device of the present invention;

[0030] Figure 9 For the present invention Figure 8 A partial enlarged schematic view at position C in it.

[0031] In the figure: 1. Explosion-proof motor main body; 101. Explosion-proof shell; 102. Stator; 103. Front end cover; 104. Rear slot cover; 105. Shaft disc; 106. Round shaft; 107. Rotor; 108. Junction box; 2. Blower; 3. Hood; 4. Square shell; 5. Air inlet pipe; 6. T-shaped frame; 7. Ring support; 8. Electric telescopic rod; 9. Disc; 10. Rubber ring; 11. Groove ring; 12. Dust-proof net; 13. Secondary sealing device; 131. H-shaped block; 132. L-shaped hole plate; 133. U-shaped connecting plate; 134. Arc plate; 135. Round shell; 136. Spring; 137. Arc concave block; 138. Sphere; 14. Stabilizing device; 141. Ring; 142. Short column; 143. U-shaped frame; 144. Double vertical frame; 145. Shell; 146. Filter screen; 147. Calcium chloride block. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0033] Please refer to Figures 1-9, an embodiment of the present invention is: a fully enclosed dust explosion-proof motor, including an explosion-proof motor main body 1, the explosion-proof motor main body 1 includes an explosion-proof shell 101, a stator 102, a front end cover 103, a rear slot cover 104, a shaft disc 105, a round shaft 106, a rotor 107 and a junction box 108. The stator 102 is fixedly installed on the inner wall of the explosion-proof shell 101. The front end cover 103 is fixedly installed on the left side of the explosion-proof shell 101. The rear slot cover 104 is fixedly installed on the right side of the explosion-proof shell 101. A plurality of air inlets are provided on the right side of the rear slot cover 104. The shaft disc 105 penetrates and is fixedly installed in the middle of the left side of the front end cover 103. The round shaft 106 is rotatably installed on the inner wall of the shaft disc 105. The right end of the round shaft 106 penetrates and is rotatably connected to the left side of the rear slot cover 104. The rotor 107 is fixedly installed on the outer wall of the round shaft 106. The junction box 108 penetrates and is rotatably installed on the top left side of the explosion-proof shell 101. A plurality of heat dissipation fins are provided on the outer wall of the explosion-proof shell 101. A support frame is provided on the bottom surface of the explosion-proof shell 101. A plurality of coils are wound around the outer wall of the rotor 107. An air outlet is provided at the top of the front of the junction box 108. The operator connects a cold air pump to the air inlet pipe 5, and the air inlet pipe 5 conveys cold air into the square shell 4. The cold air in the square shell 4 is drawn in by the fan blade 2. The cold air passes through the dust-proof net 12 of the groove ring 11 and enters the machine cover 3. The cold air in the machine cover 3 passes through the air inlets of the rear slot cover 104 and enters the explosion-proof shell 101. The cold air cools the stator 102 and the rotor 107. After cooling, the gas enters the junction box 108 and is discharged from the air outlet of the junction box 108;

[0034] The inner wall of the explosion-proof motor body 1 is rotatably provided with a circular shaft 106, and a fan blade 2 is fixedly installed on the right side of the circular shaft 106. The fan blade 2 draws in gas to cool the inside of the explosion-proof motor body 1, so that the explosion-proof motor body 1 will not be overheated and damaged during operation. A rear slot cover 104 is provided on the right side of the explosion-proof motor body 1, and a hood 3 is fixed on the right side of the rear slot cover 104. A circular opening is opened in the middle of the right side of the hood 3, and a square shell 4 is fixed on the right side of the hood 3. The top surface of the square shell 4 passes through and is fixed with an air intake pipe 5, and a T-shaped frame 6 is fixed in the middle of the bottom surface of the square shell 4. An electric telescopic rod 8 is fixed on the inner wall of a ring bracket 7 at the bottom end of the square shell 4, and a disc 9 is fixed on the left side of the telescopic end of the electric telescopic rod 8. A rubber ring 10 is fixed on the left edge of the disc 9, and a groove ring 11 is fixed in the middle of the left side of the disc 9. A plurality of notches are opened on the outer wall of the groove ring 11, and the outer wall of the groove ring 11 is slidably connected to the inner wall of the circular opening of the hood 3, and the inner walls of the plurality of notches of the groove ring 11 are The hood 3 is in a completely sealed state. The air inlet pipe 5 is located above the electric telescopic rod 8. The right end of the electric telescopic rod 8 is provided with a square plate. The right side of the square plate of the electric telescopic rod 8 is fixedly connected to the left side of the inner wall of the square shell 4. The right side of the hood 3 is on the movement trajectory of the left side of the rubber ring 10. The telescopic end of the electric telescopic rod 8 drives the disc 9 to move to the left, and the disc 9 drives the rubber ring 10 to move to the left. The disc 9 drives the groove ring 11 to move to the left. The groove ring 11 slides to the left in the circular mouth of the hood 3. In the process of the rubber ring 10 moving to the left, the rubber ring 10 contacts the hood 3. Under the extrusion of the disc 9, the rubber ring 10 seals the circular mouth of the hood 3, allowing the explosion-proof motor body 1 to continue to operate in a dusty environment, avoiding the explosion-proof motor body 1 from having to suspend operation in a dusty environment, resulting in poor operation of the explosion-proof motor body 1.

[0035] A secondary sealing device 13 is provided at the top right side of the disc 9. The secondary sealing device 13 is used to seal the outlet of the air intake pipe 5. A stabilizing device 14 is provided in the middle of the outer wall of the secondary sealing device 13. The stabilizing device 14 is used to improve the stability of the equipment operation.

[0036] Working principle: Since the working environment of the explosion-proof motor main body 1 is complex and there is a lot of dust, it is necessary to pause the operation of the explosion-proof motor main body 1 and restart it after the dust has dispersed. When using this motor, the operator starts the explosion-proof motor main body 1, and the round shaft 106 in the explosion-proof motor main body 1 starts to rotate. The round shaft 106 rotates in the front end cover 103, and the shaft disc 105 seals the front end cover 103. When the dust in the working environment of the explosion-proof motor main body 1 is less, the round shaft 106 drives the fan blade 2 to rotate. At the same time, the rear slot cover 104 supports the machine cover 3, the machine cover 3 supports the square shell 4, and the T-shaped frame 6 supports the lower part of the square shell 4. The operator connects a cold air pump to the air inlet pipe 5, and the air inlet pipe 5 conveys cold air into the square shell 4. The cold air in the square shell 4 is sucked in by the fan blade 2. The cold air passes through the dust-proof net 12 of the slot ring 11 and enters the machine cover 3. The cold air in the machine cover 3 passes through the air inlet of the rear slot cover 104 and enters the explosion-proof shell 101. The cold air cools the stator 102 and the rotor 107. After cooling, the gas enters the junction box 108 and is discharged from the air outlet of the junction box 108. When there is a lot of dust in the working environment of the explosion-proof motor main body 1, the square shell 4 supports the ring bracket 7. The operator starts the electric telescopic rod 8 in the ring bracket 7. The telescopic end of the electric telescopic rod 8 moves to the left. The telescopic end of the electric telescopic rod 8 drives the disc 9 to move to the left. The disc 9 drives the rubber ring 10 to move to the left. The disc 9 drives the slot ring 11 to move to the left. The slot ring 11 slides to the left in the round hole of the machine cover 3. During the process of the rubber ring 10 moving to the left, the rubber ring 10 contacts the machine cover 3. Under the extrusion of the disc 9, the rubber ring 10 seals the round hole of the machine cover 3, allowing the explosion-proof motor main body 1 to continue operating in a dusty environment, preventing the need to pause the operation of the explosion-proof motor main body 1 when there is a lot of dust, and thus avoiding the problem that the operation effect of the explosion-proof motor main body 1 is poor due to the need to pause the operation in a dusty environment.

[0037] Please refer to Figures 1-9, on the basis of the above embodiments, in another embodiment of the present invention, the secondary sealing device 13 includes an H-shaped block 131. The H-shaped block 131 is fixed to the top right of the disc 9. A L-shaped hole plate 132 is fixed to the right side of the H-shaped block 131. A circular opening is provided on the top surface of the L-shaped hole plate 132. The top surface of the L-shaped hole plate 132 is in sliding contact with the top surface of the square shell 4. A U-shaped connecting plate 133 is fixed to the right side of the bottom surface of the L-shaped hole plate 132. An arc plate 134 is fixed to the top right of the U-shaped connecting plate 133. The top surface of the arc plate 134 is in sliding contact with the top surface of the square shell 4. The arc plate 134 is located on the right side of the L-shaped hole plate 132. A circular opening is provided on the top surface of the arc plate 134. A rubber pad is provided on the inner wall of the circular opening of the arc plate 134. The U-shaped connecting plate 133 drives the arc plate 134 to move leftward. The rubber pad in the arc plate 134 moves below the air inlet pipe 5. The rubber pad of the arc plate 134 blocks the cold air with dust in the air inlet pipe 5 from entering the square shell 4, so that the cold air with dust will no longer enter the square shell 4, allowing the arc plate 134 to seal the air inlet pipe 5, and avoiding the cold air with dust from entering the square shell 4 and causing a large amount of dust to accumulate in the square shell 4 when the explosion-proof motor main body 1 is airtight.

[0038] A circular shell 135 is fixed to the bottom surface of the arc plate 134. A spring 136 is fixed to the bottom end inside the circular shell 135. An arc concave block 137 is fixed to the end of the spring 136 away from the circular shell 135. A sphere 138 is fixed to the inner wall of the arc concave block 137. The top surface of the sphere 138 is in contact with the bottom surface of the rubber pad of the arc plate 134. The sphere 138 is used to push up the rubber pad of the arc plate 134, causing the rubber pad of the arc plate 134 to deform, so that the rubber pad of the arc plate 134 is embedded at the air outlet of the air inlet pipe 5. Under the elastic force of the spring 136, the spring 136 drives the arc concave block 137 to move upward, and the arc concave block 137 drives the sphere 138 to move upward. The sphere 138 presses against the rubber pad of the arc plate 134 to deform, and the rubber pad of the arc plate 134 is embedded at the air outlet of the air inlet pipe 5, so that the air inlet pipe 5 does not leak gas, and avoiding gas leakage from the air outlet of the air inlet pipe 5 into the square shell 4 and causing too high air pressure in the square shell 4 when the explosion-proof motor main body 1 is airtight.

[0039] The stabilizing device 14 includes a circular ring 141. The circular ring 141 is fixed to the middle of the outer wall of the circular shell 135. A short column 142 is fixed to the middle of the front and back of the circular ring 141. A U-shaped frame 143 is fixed to the left side of the inner wall of the square shell 4. A chute is provided in the middle of the front and back of the U-shaped frame 143. The outer wall of the short column 142 is in sliding contact with the inner wall of the chute of the U-shaped frame 143. A double vertical frame 144 is fixed to the left side of the U-shaped frame 143. The bottom surface of the double vertical frame 144 is fixedly connected to the bottom end inside the square shell 4. The short column 142 moves leftward in the chute of the U-shaped frame 143, so that the chute of the U-shaped frame 143 limits the short column 142, allowing the arc plate 134 to slide closely against the wall surface of the square shell 4, and avoiding the arc plate 134 from shaking violently and causing the equipment to run smoothly when the explosion-proof motor main body 1 is airtight.

[0040] One end of each of the short columns 142 away from each other is fixedly provided with a housing 145. A filter screen 146 is fixedly mounted on the inner wall of the housing 145. A calcium chloride block 147 is fixedly installed at the bottom end inside the housing 145. The filter screen 146 is located on one side of the calcium chloride blocks 147 away from each other. The short column 142 drives the housing 145 to move leftward. The housing 145 drives the calcium chloride block 147 to move leftward, so that the calcium chloride block 147 contacts the gas in the square housing 4 over a large area during movement. The calcium chloride block 147 absorbs the moisture in the gas, preventing a large amount of moisture from accumulating in the square housing 4. The calcium chloride block 147 is used to dry the inside of the square housing 4 to prevent the electronic components in the square housing 4 from being affected by moisture.

[0041] Working principle: While the disc 9 drives the rubber ring 10 to move leftward, the disc 9 drives the H-shaped block 131 to move leftward. The H-shaped block 131 drives the L-shaped hole plate 132 to move leftward. The L-shaped hole plate 132 drives the U-shaped connecting plate 133 to move leftward. The U-shaped connecting plate 133 drives the arc plate 134 to move leftward. The rubber pad in the arc plate 134 moves below the air inlet pipe 5. The rubber pad of the arc plate 134 blocks the cold air with dust in the air inlet pipe 5 from entering the square housing 4, so that the cold air with dust will no longer enter the square housing 4. The arc plate 134 seals the air inlet pipe 5, preventing the cold air with dust from entering the square housing 4 during the use of the equipment, thus avoiding the problem that a large amount of dust accumulates in the square housing 4 when the cold air with dust enters the square housing 4 during the airtight state of the explosion-proof motor main body 1.

[0042] While the U-shaped connecting plate 133 drives the arc plate 134 to move leftward, the arc plate 134 drives the circular housing 135 to move leftward. The circular housing 135 drives the spring 136 to move leftward. The spring 136 drives the arc concave block 137 to move leftward. The arc concave block 137 drives the sphere 138 to move leftward. When the rubber pad of the arc plate 134 moves below the air inlet pipe 5, the compressed spring 136 starts to extend. Under the elastic force of the spring 136, the spring 136 drives the arc concave block 137 to move upward. The arc concave block 137 drives the sphere 138 to move upward. The sphere 138 presses against the rubber pad of the arc plate 134 to deform, and the rubber pad of the arc plate 134 is embedded at the air outlet of the air inlet pipe 5, preventing the air inlet pipe 5 from leaking gas. Preventing the gas from leaking from the air outlet of the air inlet pipe 5 into the square housing 4 during the use of the equipment, thus avoiding the problem that the gas pressure in the square housing 4 is too high when the gas leaks from the air outlet of the air inlet pipe 5 into the square housing 4 during the airtight state of the explosion-proof motor main body 1.

[0043] While the arc plate 134 drives the circular shell 135 to move leftward, the circular shell 135 drives the ring 141 to move leftward, and the ring 141 drives the short column 142 to move leftward. At the same time, the double vertical frame 144 supports the U-shaped frame 143, and the short column 142 moves leftward in the chute of the U-shaped frame 143, so that the chute of the U-shaped frame 143 limits the short column 142, making the arc plate 134 slide closely along the wall surface of the square shell 4, preventing the arc plate 134 from jittering during movement when the device is in use, thus avoiding the problem that the arc plate 134 jitters violently during the sealing of the explosion-proof motor main body 1, causing the device to operate smoothly.

[0044] While the ring 141 drives the short column 142 to move leftward, the short column 142 drives the shell 145 to move leftward, the shell 145 drives the filter screen 146 to move leftward, and the shell 145 drives the calcium chloride block 147 to move leftward, making the calcium chloride block 147 contact the gas in the square shell 4 over a large area during movement. The calcium chloride block 147 absorbs the moisture in the gas, preventing a large amount of moisture from accumulating in the square shell 4 when the device is in use, thus avoiding the problem that a large amount of moisture in the square shell 4 causes the interior of the device to get damp when the explosion-proof motor main body 1 is sealed.

[0045] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, should be covered within the protection scope of the present invention.

Claims

1. A fully sealed dust explosion-proof motor, comprising an explosion-proof motor body (1), wherein a circular shaft (106) is rotatably provided on the inner wall of the explosion-proof motor body (1), characterized in that: A fan blade (2) is fixedly mounted on the right side of the circular shaft (106); The fan blades (2) draw in gas to cool the interior of the explosion-proof motor body (1), so that the explosion-proof motor body (1) will not be overheated and damaged during operation; A rear slot cover (104) is provided on the right side of the explosion-proof motor body (1), a hood (3) is fixed on the right side of the rear slot cover (104), a round opening is provided in the middle of the right side of the hood (3), a square shell (4) is fixed on the right side of the hood (3), an air intake pipe (5) is passed through and fixed on the top surface of the square shell (4), and a T-shaped frame (6) is fixed in the middle of the bottom surface of the square shell (4); The inner bottom end of the square shell (4) is fixed with a ring support (7), and the inner wall of the electric telescopic rod (8) is fixedly mounted thereon. A disc (9) is fixed to the left side of the telescopic end of the electric telescopic rod (8). A rubber ring (10) is fixed to the left edge of the disc (9). A groove ring (11) is fixed to the middle of the left side of the disc (9). The outer wall of the groove ring (11) is provided with a plurality of notches. The outer wall of the groove ring (11) is slidably connected to the inner wall of the circular opening of the hood (3). A dustproof net (12) is fixed to the inner walls of the plurality of notches of the groove ring (11). The disc (9) is used to press against the circular opening of the hood (3), so that the hood (3) is in a completely sealed state.

2. The fully sealed dust explosion-proof motor according to claim 1, characterized in that: The air inlet pipe (5) is located above the electric telescopic rod (8). A square plate is provided at the right end of the electric telescopic rod (8). The right side of the square plate of the electric telescopic rod (8) is fixedly connected to the left side of the inner wall of the square shell (4). The right side of the hood (3) is located on the motion trajectory of the left side of the rubber ring (10).

3. The fully sealed dust explosion-proof motor according to claim 2, characterized in that: The explosion-proof motor body (1) comprises an explosion-proof shell (101), a stator (102), a front end cover (103), a rear slot cover (104), a shaft disc (105), a circular shaft (106), a rotor (107) and a terminal box (108), wherein the stator (102) is fixedly mounted on the inner wall of the explosion-proof shell (101), the front end cover (103) is fixedly mounted on the left side of the explosion-proof shell (101), the rear slot cover (104) is fixedly mounted on the right side of the explosion-proof shell (101), and the rear A plurality of air inlets are provided on the right side of the slot cover (104); the shaft disc (105) passes through and is fixedly mounted on the middle of the left side of the front end cover (103); the circular shaft (106) is rotatably mounted on the inner wall of the shaft disc (105); the right end of the circular shaft (106) passes through and is rotatably connected to the left side of the rear slot cover (104); the rotor (107) is fixedly mounted on the outer wall of the circular shaft (106); and the junction box (108) passes through and is rotatably mounted on the left side of the top surface of the explosion-proof shell (101).

4. The fully sealed dust explosion-proof motor according to claim 3, characterized in that: The outer wall of the explosion-proof shell (101) is provided with a plurality of heat sinks, the bottom surface of the explosion-proof shell (101) is provided with a support frame, the outer wall of the rotor (107) is wound with a plurality of coils, and the front top of the junction box (108) is provided with an air outlet.

5. The fully sealed dust explosion-proof motor according to claim 4, characterized in that: A secondary sealing device (13) is provided on the top right side of the disc (9), and the secondary sealing device (13) is used to seal the outlet of the air intake pipe (5); A stabilizing device (14) is provided in the middle of the outer wall of the secondary sealing device (13), and the stabilizing device (14) is used to improve the stability of equipment operation.

6. The fully sealed dust explosion-proof motor according to claim 5, characterized in that: The secondary sealing device (13) includes an H-shaped block (131), the H-shaped block (131) is fixed to the top right side of the disc (9), an L-shaped orifice plate (132) is fixed to the right side of the H-shaped block (131), a circular opening is opened on the top surface of the L-shaped orifice plate (132), the top surface of the L-shaped orifice plate (132) is in sliding contact with the top surface of the square shell (4), a U-shaped connecting plate (133) is fixed to the right side of the bottom surface of the L-shaped orifice plate (132), and an arc plate (134) is fixed to the right side of the top surface of the U-shaped connecting plate (133).

7. The fully sealed dust explosion-proof motor according to claim 6, characterized in that: The top surface of the arc plate (134) is in sliding contact with the top surface of the square shell (4). The arc plate (134) is located on the right side of the L-shaped hole plate (132). A circular opening is provided on the top surface of the arc plate (134). A rubber pad is provided on the inner wall of the circular opening of the arc plate (134).

8. The fully sealed dust explosion-proof motor according to claim 7, characterized in that: A circular shell (135) is fixed to the bottom surface of the arc plate (134), a spring (136) is fixed to the bottom end of the circular shell (135), an arc concave block (137) is fixed to the end of the spring (136) away from the circular shell (135), a sphere (138) is fixed to the inner wall of the arc concave block (137), and the top surface of the sphere (138) contacts the bottom surface of the rubber pad of the arc plate (134); The sphere (138) is used to push the rubber pad of the arc plate (134) upward, causing the rubber pad of the arc plate (134) to deform, allowing the rubber pad of the arc plate (134) to be embedded in the air outlet of the air inlet pipe (5).

9. The fully sealed dust explosion-proof motor according to claim 8, characterized in that: The stabilizing device (14) includes a circular ring (141), which is fixed in the middle of the outer wall of the circular shell (135). A short column (142) is fixed in the middle of the front and back sides of the circular ring (141). A U-shaped frame (143) is fixed on the left side of the inner wall of the square shell (4). A sliding groove is opened in the middle of the front and back sides of the U-shaped frame (143). The outer wall of the short column (142) is in sliding contact with the inner wall of the sliding groove of the U-shaped frame (143). A double vertical frame (144) is fixed on the left side of the U-shaped frame (143), and the bottom surface of the double vertical frame (144) is fixedly connected to the bottom end of the inner side of the square shell (4).

10. The fully sealed dust explosion-proof motor according to claim 9, characterized in that: A housing (145) is fixed to each end of the short columns (142) that is away from each other. A filter screen (146) is fixed to the inner wall of the housing (145). A calcium chloride block (147) is fixedly installed at the bottom end of the housing (145). The filter screen (146) is located on the side of the calcium chloride block (147) that is away from each other. The calcium chloride block (147) is used to dry the interior of the square shell (4) to prevent the electronic components in the square shell (4) from getting wet.

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