High-sealing air-cooled explosion-proof motor

Abstract

The invention relates to the field of motors, in particular to a high-sealing air-cooled explosion-proof motor, which comprises a shell, a cover body, a main shaft, a chuck, a driving cylinder and a sealing assembly, the sealing assembly comprises a sealing ring bag and a sealing bolt, the surface of the cover body is provided with a sealing hole, the surface of the shell is provided with a sealing cavity, and the surface of the cover body is provided with a sealing ring cavity. One side of the sealing ring bag abuts against the surface of the shell to form sealing, the other side of the sealing ring bag abuts against the surface of the sealing bolt to form limiting, one end of the main shaft is rotationally connected to the inner wall of the shell, and the other end of the main shaft penetrates through the surface of the cover body. A piston rod of the driving air cylinder penetrates through the outer wall of the shell and is connected to the chuck driving end. Through the arrangement of the sealing ring bag and the sealing bolt, external impurities are not prone to entering the inner cavity of the shell from the joint of the shell and the cover body, so that the operation stability of the main shaft is guaranteed, the main shaft is not prone to being worn, and the service life of the motor is prolonged.

Description

Technical Field

[0001] The present application relates to the field of motors, and in particular to a highly sealed air-cooled explosion-proof motor. Background Art

[0002] The motor is an electromagnetic device that realizes the conversion or transmission of electric energy according to the law of electromagnetic induction. The motor is widely used. The motor used in the grinding mill mainly includes a shell, a cover, a main shaft and a chuck. The cover is fixed to the shell surface by bolts and closes the inner cavity of the shell. The main shaft is rotatably connected to the inner wall of the shell. The chuck is connected to the main shaft. The chuck is used to clamp the tool. The main shaft drives the tool to rotate. The tool grinds and crushes the ore to realize the grinding and crushing operation of the ore.

[0003] In the prior art, the cover is fixed to the surface of the shell by bolts. When the tool is grinding the ore, vibration will occur, causing the bolts on the cover to loosen. Impurities can easily enter the inner cavity of the shell from the connection between the shell and the cover, interfering with the operation of the main shaft, causing wear on the main shaft, thereby shortening the service life of the motor. Summary of the invention

[0004] In order to improve the problem of the service life of the motor, the present application provides a highly sealed air-cooled explosion-proof motor.

[0005] The present application provides a highly sealed air-cooled explosion-proof motor, which adopts the following technical solution: A highly sealed air-cooled explosion-proof motor comprises a shell, a cover body, a main shaft, a chuck, a driving cylinder and a sealing assembly, wherein the sealing assembly comprises a sealing ring capsule and a sealing bolt, a sealing hole for the end of the sealing bolt to pass through is provided on the surface of the cover body, and a sealing cavity for the end of the sealing bolt to be embedded is provided on the surface of the shell, when the end of the sealing bolt passes through the sealing hole and is threadedly tightened and fixed on the inner wall of the sealing cavity, the surface of the cover body is pressed against the surface of the shell and closes the inner cavity of the shell, a sealing ring cavity for accommodating the sealing ring capsule is provided on the surface of the cover body facing the shell, the sealing ring cavity is connected to the sealing hole, one side of the sealing ring capsule is pressed against the surface of the shell to form a seal, and the other side of the sealing ring capsule is pressed against the surface of the sealing bolt to form a limit, one end of the main shaft is rotatably connected to the inner wall of the shell, the other end of the main shaft passes through the surface of the cover body, the chuck is connected to the end of the main shaft protruding from the cover body, the driving cylinder is connected to the surface of the shell, the piston rod of the driving cylinder passes through the outer wall of the shell and is connected to the driving end of the chuck, and when the piston rod of the driving cylinder is extended, the chuck releases the tool.

[0006] By adopting the above technical scheme, when the motor is installed, when the end of the sealing bolt transmits the sealing hole and is threadedly tightened and fixed on the inner wall of the sealing cavity, the surface of the cover body is pressed against the surface of the shell and closes the inner cavity of the shell, the sealing hole is connected to the sealing ring cavity, and the outer ring wall of the sealing ring capsule is pressed against the surface of the sealing bolt to form a limit, so that the sealing bolt is not easy to rotate around its own axis when vibrated, thereby ensuring the sealing stability between the cover body and the shell; at the same time, the inner wall of the sealing ring cavity and the surface of the shell are pressed against both sides of the sealing ring capsule to form a seal, so that external impurities are not easy to enter the inner cavity of the shell from the connection between the shell and the cover body, thereby ensuring the stability of the main shaft operation and making the main shaft not easy to The tool grinding end abuts against the surface of the ore, and the rotation of the spindle drives the tool to rotate, and the tool grinding end grinds and crushes the surface of the ore. When the tool needs to be replaced, the piston rod of the driving cylinder is extended to drive the clamping end of the chuck to release the fixed end of the tool, and the required fixed end of the tool is embedded in the clamping end of the chuck, and the piston rod of the driving cylinder is contracted to realize the directional replacement of the tool, thereby improving the convenience of using the motor.

[0007] Optionally, the sealing assembly also includes an elastic member and a sealing piston, the inner wall of the sealing cavity is provided with an inlet flow channel, the inlet flow channel penetrates the outer wall of the shell in a direction close to the cover body, the surface of the cover body facing the inlet flow channel is provided with a supply flow channel, the supply flow channel is connected to the inner cavity of the sealing ring bag, one end of the elastic member in the elastic force direction is connected to the bottom wall of the sealing cavity, the other end of the elastic member in the elastic force direction is connected to the surface of the sealing piston, and the elastic member has a tendency to drive the sealing piston to slide in a direction away from the inlet flow channel due to elastic force.

[0008] By adopting the above technical scheme, the elastic force of the elastic member drives the sealing piston to slide in the direction away from the intake air channel. When the end of the sealing bolt passes through the sealing hole and is threadedly tightened and fixed on the inner wall of the sealing cavity, the end of the sealing bolt abuts against the surface of the sealing piston and drives the sealing piston to slide in the direction close to the intake air channel, and the air pressure in the intake air channel increases; at the same time, the surface of the cover body abuts against the surface of the shell body to form a seal, and the air supply channel connects the intake air channel and the inner cavity of the sealing ring bag. The air in the intake air channel enters the inner cavity of the sealing ring bag through the air supply channel. The surface of the sealing ring bag is pressurized and expanded and abuts against the surface of the sealing bolt to form a limit, thereby increasing the abutting force between the surface of the sealing ring bag and the surface of the sealing bolt, making it difficult for the sealing bolt to deflect in the sealing hole, thereby improving the connection stability between the shell and the cover body.

[0009] Optionally, the sealing assembly also includes a gear and a rack, the inner wall of the sealing cavity is provided with a rotating cavity for the gear to rotate, the surface of the sealing piston is provided with a tooth groove meshing with the gear tooth surface, the rotating cavity passes through the outer wall of the shell toward the cover body, the rack is slidably connected to the inner wall of the rotating cavity and meshes with the gear, the sliding direction of the rack and the sliding direction of the sealing piston are parallel to each other, when the cover body covers the shell, the rotating cavity is connected to the sealing ring cavity, and the end of the rack can be embedded in the sealing ring cavity and squeeze the surface of the sealing ring bag.

[0010] By adopting the above technical solution, when the sealing piston slides toward the direction close to the intake flow channel, the inner wall of the tooth groove engages with the gear tooth surface, driving the gear to rotate on the inner wall of the rotating chamber, and the rack engages with the gear, driving the rack to slide along the inner wall of the rotating chamber toward the sealing ring chamber, and the end of the rack is embedded in the sealing ring chamber and squeezes the surface of the sealing ring bag, the volume of the inner cavity of the sealing ring bag is reduced, and the surface of the sealing ring bag is pressed against the surface of the sealing bolt to form a limit, thereby further increasing the pressing force between the sealing bolt and the sealing ring bag.

[0011] Optionally, the shell is connected to a heat dissipation assembly, which includes a heat dissipation box, a reciprocating screw and a heat dissipation piston. The heat dissipation box is connected to the surface of the shell, the reciprocating screw is rotatably connected to the inner wall of the heat dissipation box, the heat dissipation piston is threadedly connected to the outer wall of the reciprocating screw, and the heat dissipation piston divides the inner cavity of the heat dissipation box into heat dissipation section one and heat dissipation section two. The inner wall of the heat dissipation section one is provided with an air outlet, which is connected to the inner cavity of the shell, and the inner wall of the heat dissipation section two is provided with an air inlet, which is connected to the inner cavity of the shell.

[0012] By adopting the above technical scheme, the reciprocating screw rotates on the inner wall of the heat sink, driving the heat sink piston to slide back and forth on the inner wall of the heat sink along the axis of the reciprocating screw. When the heat sink piston slides in the direction close to the heat sink section one, the air in the heat sink section one enters the inner cavity of the shell through the air outlet, and the air in the shell enters the heat sink section two through the air inlet, promoting the air flow in the shell, and the air is in full contact with the components in the shell and heat exchange is performed, so that the components in the shell are not easily exposed to high temperature for a long time and explode, thereby ensuring the stability of the motor operation; when the heat sink piston slides in the direction close to the heat sink section two, the air in the heat sink section two enters the inner cavity of the shell through the air inlet, and at the same time, the air in the shell enters the heat sink section one through the air outlet, and the air is in full contact with the inner wall of the heat sink section one and heat exchange is performed, thereby achieving cooling of the air and ensuring the stability of heat exchange between the air and the components in the shell.

[0013] Optionally, the heat dissipation component also includes one-way valve 1, one-way valve 2, one-way valve 3 and one-way valve 4. The inner wall of the heat dissipation section 1 away from the shell is provided with an air supply hole, and the air supply hole penetrates the outer wall of the heat dissipation box. The inner wall of the heat dissipation section 2 away from the shell is provided with an exhaust hole, and the exhaust hole penetrates the outer wall of the heat dissipation box. The one-way valve 1 is connected to the inner wall of the air outlet hole, and the one-way valve 1 supplies the air in the air outlet hole to enter the inner cavity of the shell. The one-way valve 2 is connected to the inner wall of the air inlet hole, and the one-way valve 2 supplies the air in the shell to enter the air inlet hole. The one-way valve 3 is connected to the inner wall of the air supply hole, and the one-way valve 3 supplies outside air to enter the air supply hole. The one-way valve 4 is connected to the inner wall of the exhaust hole, and the one-way valve 4 supplies the air in the exhaust hole to be discharged to the outside.

[0014] By adopting the above technical scheme, when the heat dissipation piston slides along the axis of the reciprocating screw rod toward the direction close to the heat dissipation section one, the air in the heat dissipation section one enters the inner cavity of the shell through the air outlet hole and the one-way valve one in turn, the air fully contacts the components in the shell and performs heat exchange, thereby realizing air-cooling and heat dissipation of the components in the shell, and at the same time, the air pressure in the heat dissipation section two is reduced, and the air in the shell passes through the one-way valve two and the air inlet hole and enters the heat dissipation section two, thereby realizing the collection of the heated air in the shell; when the heat dissipation piston slides along the axis of the reciprocating screw rod toward the direction close to the heat dissipation section two, the air pressure in the heat dissipation section one is reduced, and the outside air passes through the one-way valve three and the air supply hole and enters the heat dissipation section one, thereby realizing the directional replenishment of the air in the heat dissipation section one, and at the same time, the air pressure in the heat dissipation section two is increased, and the air in the heat dissipation section two is discharged to the outside through the exhaust hole and the one-way valve four, thereby realizing the discharge of the high-temperature air in the shell, ensuring the stability of the air flow in the shell, and making it difficult for the components in the shell to operate in a high-temperature state for a long time and explode, thereby ensuring the stability of the motor operation.

[0015] Optionally, the heat dissipation box is connected to an opening and closing assembly, which includes an opening and closing plate, an insert, a thermal expansion and contraction plate and an opening and closing motor. An opening and closing cavity is provided on the inner wall of the heat dissipation box for the opening and closing plate to slide. The sliding direction of the opening and closing plate and the axis of the reciprocating screw are parallel to each other. The opening and closing motor is connected to the end of the opening and closing plate facing the reciprocating screw, and the axis of the reciprocating screw coincides with the axis of the opening and closing motor. The insert is connected to the motor shaft of the opening and closing motor, and a groove is provided on the end face of the reciprocating screw for the insert to be embedded in. One end of the thermal expansion and contraction plate is connected to the inner wall of the opening and closing cavity, and the other end of the thermal expansion and contraction plate is connected to the surface of the opening and closing plate. When the thermal expansion and contraction plate heats up and expands, the opening and closing plate is driven to slide in the direction close to the reciprocating screw, and the insert is embedded in the groove.

[0016] By adopting the above technical scheme, one end of the thermal expansion and contraction plate is connected to the inner wall of the opening and closing cavity, and the other end of the thermal expansion and contraction plate is connected to the opening and closing plate surface. When the body heats up, the heat energy is transferred to the thermal expansion and contraction plate through the heat sink. The thermal expansion and contraction plate heats up and expands, driving the opening and closing plate to slide toward the direction close to the reciprocating screw. The embedding block is embedded in the embedding groove, and the outer peripheral surface of the embedding block is pressed against the inner wall of the embedding groove to form a limit. The opening and closing motor drives the reciprocating screw to rotate, thereby realizing the directional connection between the opening and closing motor and the reciprocating screw.

[0017] Optionally, the opening and closing component also includes a contact switch, which is connected to the inner wall of the embedded groove and is electrically connected to the opening and closing motor. When the embedded block is embedded in the embedded groove, the contact switch abuts the embedded block and is turned on, and the opening and closing motor is energized and runs.

[0018] By adopting the above technical solution, when the block is embedded in the groove, the contact switch abuts against the inner wall of the groove and is turned on, the opening and closing motor is energized and runs, achieving directional starting of the opening and closing motor, reducing energy consumption, and thus embodying the concept of energy saving.

[0019] Optionally, the opening and closing assembly further includes a heat dissipation impeller, which is rotatably connected to the surface of the heat dissipation box, and the air outlet end of the heat dissipation impeller faces the air supply hole and the exhaust hole.

[0020] By adopting the above technical solution, the air outlet end of the heat dissipation impeller faces the air supply hole and the exhaust hole, and the heat dissipation impeller drives the air flow on the surface of the heat dissipation box, so that the surface of the heat dissipation box is fully in contact with the air and heat exchange is performed, thereby achieving cooling of the heat dissipation box.

[0021] Optionally, the opening and closing component also includes at least two synchronous wheels and a synchronous belt used in conjunction with the synchronous wheels, the axis of the reciprocating screw and the axis of the heat dissipation impeller are parallel to each other, the end of the reciprocating screw passes through the outer wall of the heat dissipation box and is coaxially connected to one of the synchronous wheels, and the other synchronous wheel is coaxially connected to the rotating shaft of the heat dissipation impeller, and the synchronous belt is tensioned to connect the two synchronous wheels.

[0022] By adopting the above technical solution, when the reciprocating screw rotates, the synchronous belt is tensioned to connect the two synchronous wheels, driving the heat dissipation impeller to rotate. There is no need for an external power device to drive the heat dissipation impeller to rotate, thereby reducing material consumption and embodying the concept of environmental protection.

[0023] Optionally, the opening and closing assembly also includes a thermal expansion and contraction ring, the inner ring of the thermal expansion and contraction ring is coaxially connected to one of the synchronous wheel surfaces, and the outer ring of the thermal expansion and contraction ring is in rolling contact with the synchronous belt. When the thermal expansion and contraction ring heats up and expands, the synchronous belt is tensioned to connect the two synchronous wheels.

[0024] By adopting the above technical solution, when the thermal expansion and contraction ring heats up and expands, the synchronous belt tensions the two synchronous wheels to drive the heat dissipation impeller to rotate, thereby ensuring the stability of driving the heat dissipation impeller to rotate.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. The setting of the sealing ring bag and the sealing bolt makes it difficult for foreign matter to enter the inner cavity of the shell from the connection between the shell and the cover, thereby ensuring the stability of the spindle operation, making the spindle less prone to wear and tear, and thus extending the service life of the motor; 2. The setting of the elastic member 1 and the sealing piston causes the surface of the sealing ring capsule to expand under pressure and press against the surface of the sealing bolt to form a limit, thereby increasing the pressing force between the surface of the sealing ring capsule and the surface of the sealing bolt, making it difficult for the sealing bolt to deflect in the sealing hole, thereby improving the connection stability between the shell and the cover body; 3. With the arrangement of the gear and the rack, the volume of the inner cavity of the sealing ring bag is reduced, and the surface of the sealing ring bag is pressed against the surface of the sealing bolt to form a limit, further increasing the pressing force between the sealing bolt and the sealing ring bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure in the embodiment of the present application.

[0027] Figure 2 It is a partial cross-sectional view in an embodiment of the present application, mainly showing the sealing component.

[0028] Figure 3 It is a partial cross-sectional view in an embodiment of the present application, mainly showing the heat dissipation component.

[0029] Description of the reference numerals: 1, housing; 11, sealing chamber; 12, rotating chamber; 13, air inlet passage; 2, cover; 21, sealing hole; 22, sealing ring chamber; 23, air supply passage; 3, spindle; 4, chuck; 5, driving cylinder; 6, sealing assembly; 61, sealing ring capsule; 62, sealing bolt; 63, elastic member 1; 64, sealing piston; 641, tooth groove; 65, rack; 66, gear; 7, heat dissipation assembly; 71, heat dissipation box; 711, heat dissipation section 1; 712, heat dissipation section 2; 7 13. Air outlet; 714. Air supply hole; 715. Air inlet; 716. Exhaust hole; 717. Opening and closing chamber; 72. Reciprocating screw; 721. Embedded groove; 73. Heat dissipation piston; 74. One-way valve one; 75. One-way valve two; 76. One-way valve three; 77. One-way valve four; 8. Opening and closing assembly; 81. Opening and closing plate; 82. Embedded block; 83. Thermal expansion and contraction plate; 84. Opening and closing motor; 85. Contact switch; 86. Heat dissipation impeller; 87. Thermal expansion and contraction ring; 88. Synchronous wheel; 89. Synchronous belt. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-3 This application is described in further detail.

[0031] The present application embodiment discloses a highly sealed air-cooled explosion-proof motor. Figure 1 and Figure 2 The high-sealed air-cooled explosion-proof motor includes a shell 1, a cover 2, a spindle 3, a chuck 4, a driving cylinder 5 and a sealing assembly 6. The cover 2 covers the inner cavity of the shell 1, and the sealing assembly 6 is installed between the shell 1 and the cover 2. The sealing assembly 6 can tightly fix the cover 2 on the surface of the shell 1 to form a seal, so that foreign impurities are not easy to enter the inner cavity of the shell 1 from the connection between the shell 1 and the cover 2, thereby ensuring the stability of the operation of the internal components of the shell 1, thereby extending the service life of the motor; one end of the spindle 3 is rotatably connected to the inner wall of the shell 1, and the other end of the spindle 3 passes through the outer wall of the cover 2. The chuck 4 is installed at the end of the spindle 3 protruding from the cover 2, and the driving cylinder 5 It is fixed to the end of the shell 1 away from the chuck 4 by bolts, the axis of the piston rod of the driving cylinder 5 coincides with the axis of the main shaft 3, the end of the piston rod of the driving cylinder 5 passes through the outer wall of the shell 1 and is installed at the driving end of the chuck 4. When the fixed end of the tool is embedded in the clamping end of the chuck 4, the piston rod of the driving cylinder 5 contracts, driving the clamping end of the chuck 4 to clamp the fixed end of the tool to form a limit, the spindle 3 drives the tool to rotate, and the grinding end of the tool grinds and crushes the ore. When the tool needs to be replaced, the piston rod of the driving cylinder 5 extends out, and the clamping end of the chuck 4 loosens the fixed end of the tool, realizing quick disassembly and quick installation of the chuck 4 and the tool, thereby improving the simplicity of practical use of the motor.

[0032] Reference Figure 1 and Figure 2 The sealing assembly 6 includes a sealing ring bag 61, a sealing bolt 62, an elastic member 63, a sealing piston 64, a rack 65 and a gear 66. The material of the sealing ring bag 61 can be rubber or silicone. In the embodiment of the present application, the material of the sealing ring bag 61 is rubber, which has a certain deformation ability. The elastic member 63 can be a compression spring or a tension spring. In the embodiment of the present application, the elastic member 63 is a compression spring, which has a certain deformation ability. The material of the sealing piston 64 can be rubber or silicone. In the embodiment of the present application, the material of the sealing piston 64 is rubber, which has a certain deformation ability.

[0033] Reference Figure 1 and Figure 2The number of sealing bolts 62 can be one, two or more. In the embodiment of the present application, the number of sealing bolts 62 is multiple. The surface of the cover body 2 is provided with multiple sealing holes 21 for the ends of the sealing bolts 62 to pass through. The multiple sealing holes 21 surround the main shaft 3. The axes of the sealing holes 21 and the axes of the main shaft 3 are parallel to each other. The sealing holes 21 pass through the outer wall of the cover body 2 along their own axes. The surface of the shell 1 facing the sealing holes 21 is provided with sealing cavities 11 for the ends of the sealing bolts 62 to be embedded. When the ends of the sealing bolts 62 pass through the sealing holes 21 and are screwed and fixed to the inner wall of the sealing cavity 11, the cover body 2 covers the inner cavity of the shell 1, and the surface of the cover body 2 is pressed against the surface of the shell 1 to form a seal, so that impurities are not easy to enter the inner cavity of the shell 1 from the pressing point between the cover body 2 and the shell 1 to interfere with the operation of the components, thereby extending the service life of the motor.

[0034] Reference Figure 1 and Figure 2 A sealing ring cavity 22 for accommodating a sealing ring capsule 61 is provided on the surface of the cover body 2 facing the shell 1. The sealing ring cavity 22 surrounds the main shaft 3 and is connected to a plurality of sealing holes 21. The outer ring wall of the sealing ring capsule 61 can press against the surface of the sealing bolt 62 to form a limit, and the inner wall of the sealing ring cavity 22 and the surface of the shell 1 clamp the two sides of the sealing ring capsule 61 to form a seal, so that foreign matter is not easy to enter the inner cavity of the shell 1 from the contact point between the cover body 2 and the shell 1, thereby achieving high sealing performance for the motor; one end of the elastic member 63 in the elastic direction is fixed to the inner wall of the sealing cavity 11, and the other end of the elastic member 63 in the elastic direction is fixed to the surface of the sealing piston 64. The elastic member 63 has a tendency to drive the sealing piston 64 to slide in the direction close to the cover body 2, and the sliding direction of the sealing piston 64 is parallel to the axis of the main shaft 3.

[0035] Reference Figure 1 and Figure 2 A rotating chamber 12 for rotating the gear 66 is provided on the inner wall of the sealing chamber 11, and a tooth groove 641 meshing with the tooth surface of the gear 66 is provided on the surface of the sealing piston 64. The rotating chamber 12 penetrates the outer wall of the shell 1 toward the direction close to the sealing ring chamber 22, and the rack 65 is slidably connected to the inner wall of the rotating chamber 12. The sliding direction of the rack 65 and the sliding direction of the sealing piston 64 are parallel to each other. The rack 65 and the sealing piston 64 are located on both sides of the gear 66, and the rack 65 meshes with the gear 66. An inlet flow channel 13 is provided on the bottom wall of the sealing chamber 11, and the inlet flow channel 13 penetrates the outer wall of the shell 1 toward the direction close to the cover body 2. A supply flow channel 23 is provided on the surface of the cover body 2 facing the inlet flow channel 13, and the supply flow channel 23 is connected to the inner cavity of the sealing ring bag 61.

[0036] Reference Figure 1 and Figure 2When the end of the sealing bolt 62 passes through the sealing hole 21 and is screwed and fixed to the inner wall of the sealing chamber 11, the end of the sealing bolt 62 abuts against the surface of the sealing piston 64 and drives the sealing piston 64 to slide in the direction close to the intake channel 13, the air pressure in the intake channel 13 increases, and at the same time, the surface of the cover body 2 abuts against the surface of the shell 1 to form a seal, and the air in the intake channel 13 enters the inner cavity of the sealing ring bag 61 through the supply channel 23, and the surface of the sealing ring bag 61 is pressurized and expanded and abuts against the surface of the sealing bolt 62 to form a limit, so that the sealing bolt 62 is not easy to be in the sealing hole 21 Deflection occurs, thereby ensuring high sealing between the cover body 2 and the shell 1; at the same time, the inner wall of the tooth groove 641 meshes with the tooth surface of the gear 66, driving the gear 66 to rotate on the inner wall of the rotating chamber 12, driving the rack 65 to slide along the inner wall of the rotating chamber 12 toward the sealing ring chamber 22, and the end of the rack 65 is embedded in the sealing ring chamber 22 and squeezes the surface of the sealing ring capsule 61. The surface of the sealing ring capsule 61 is compressed and deformed, the volume of the sealing ring capsule 61 becomes smaller, and the air pressure in the sealing ring capsule 61 increases, further increasing the clamping force between the surface of the sealing ring capsule 61 and the surface of the sealing bolt 62.

[0037] Reference Figure 1 and Figure 3 The shell 1 is equipped with a heat dissipation component 7, which can cool the components in the shell 1. The heat dissipation component 7 includes a heat dissipation box 71, a reciprocating screw rod 72, a heat dissipation piston 73, a one-way valve 74, a one-way valve 75, a one-way valve 76 and a one-way valve 77. The material of the heat dissipation piston 73 can be rubber or silicone. In the embodiment of the present application, the material of the heat dissipation piston 73 is rubber, which has a certain deformation ability. The heat dissipation box 71 is fixed to the surface of the shell 1, and the reciprocating screw rod 72 is rotatably connected to the inner wall of the heat dissipation box 71. The axis of the reciprocating screw rod 72 and the axis of the main shaft 3 are perpendicular to each other. The heat dissipation piston 73 is threadedly connected to the outer wall of the reciprocating screw rod 72. The heat dissipation piston 73 moves along The axis of the reciprocating screw rod 72 slides back and forth on the inner wall of the heat dissipation box 71, and the heat dissipation piston 73 separates the inner cavity of the heat dissipation box 71 into a heat dissipation section 1 711 and a heat dissipation section 2 712. The heat dissipation section 1 711 is provided with an air outlet hole 713 on the inner wall close to the shell 1, and the air outlet hole 713 is connected to the inner cavity of the shell 1. The heat dissipation section 1 711 is provided with an air supply hole 714 on the inner wall away from the shell 1, and the air supply hole 714 passes through the outer wall of the heat dissipation box 71. The heat dissipation section 2 712 is provided with an air inlet hole 715 on the inner wall close to the shell 1, and the air inlet hole 715 is connected to the inner cavity of the shell 1. The heat dissipation section 2 712 is provided with an exhaust hole 716 on the inner wall away from the shell 1, and the exhaust hole 716 passes through the outer wall of the heat dissipation box 71.

[0038] Reference Figure 1 and Figure 3The one-way valve 1 74 is installed on the inner wall of the air outlet hole 713, and the one-way valve 1 74 supplies the air in the air outlet hole 713 to enter the inner cavity of the shell 1. The one-way valve 2 75 is installed on the inner wall of the air inlet hole 715, and the one-way valve 2 75 supplies the air in the shell 1 to enter the air inlet hole 715. The one-way valve 3 76 is fixed on the inner wall of the air supply hole 714, and the one-way valve 3 76 supplies the outside air to enter the air supply hole 714. The one-way valve 4 77 is fixed on the inner wall of the exhaust hole 716, and the one-way valve 4 77 supplies the air in the exhaust hole 716 to be discharged to the outside. When the heat dissipation piston 73 moves along the reciprocating screw rod 72 axis When the wire slides in the direction close to the heat dissipation section 1 711, the air in the heat dissipation section 1 711 is driven to pass through the air outlet 713 and the one-way valve 1 74 in turn and enter the inner cavity of the shell 1 to impact the components. The air is in full contact with the components and heat exchange is performed to achieve cooling of the components in the shell 1, avoiding the components in the shell 1 from being operated in a high temperature state for a long time and exploding, thereby improving the safety of the motor. At the same time, the high-temperature air in the shell 1 passes through the one-way valve 2 75 and the air inlet 715 in turn and enters the heat dissipation section 2 712, ensuring the stability of the air pressure in the inner cavity of the shell 1.

[0039] Reference Figure 1 and Figure 3 When the heat dissipation piston 73 slides along the axis of the reciprocating screw 72 toward the heat dissipation section 2 712, the outside air is driven to enter the heat dissipation section 1 711 through the one-way valve 3 76 and the air supply hole 714 in turn. At the same time, the high-temperature air in the heat dissipation section 2 712 is discharged to the outside through the exhaust hole 716 and the one-way valve 4 77 in turn, thereby realizing the directional discharge of the high-temperature air in the shell 1.

[0040] Reference Figure 1 and Figure 3 The heat dissipation box 71 is equipped with an opening and closing component 8, which can directionally control the rotation of the reciprocating screw 72. The opening and closing component 8 includes an opening and closing plate 81, an insert 82, a thermal expansion and contraction plate 83, an opening and closing motor 84, a contact switch 85, a heat dissipation impeller 86, a thermal expansion and contraction ring 87, at least two synchronous wheels 88 and a synchronous belt 89 used in conjunction with the synchronous wheel 88. The material of the thermal expansion and contraction plate 83 and the thermal expansion and contraction ring 87 can be a memory alloy or nylon. In the embodiment of the present application, the material of the thermal expansion and contraction ring 87 and the thermal expansion and contraction plate 83 are both memory alloys, which have a good thermal expansion coefficient. The inner wall of the heat dissipation section 711 is provided with an opening and closing cavity 717 for the opening and closing plate 81 to slide, the sliding direction of the opening and closing plate 81 and the axis of the reciprocating screw 72 are parallel to each other, one end of the thermal expansion and contraction plate 83 is fixed to the bottom wall of the opening and closing cavity 717, and the other end of the thermal expansion and contraction plate 83 is fixed to the surface of the opening and closing plate 81, the opening and closing motor 84 is fixed to the surface of the opening and closing plate 81 by bolts, the motor axis of the opening and closing motor 84 coincides with the axis of the reciprocating screw 72, the insert block 82 is fixed to the end of the motor shaft of the opening and closing motor 84, and the end of the reciprocating screw 72 facing the insert block 82 is provided with an embedding groove 721 for the embedding of the embed block 82.

[0041] Reference Figure 1 and Figure 3 The contact switch 85 is fixed on the inner wall of the embedded groove 721, and the contact switch 85 is electrically connected to the opening and closing motor 84. The heat dissipation impeller 86 is rotatably connected to the top wall of the heat dissipation box 71. The air outlet end of the heat dissipation impeller 86 faces the exhaust hole and the air supply hole. The axis of the heat dissipation impeller 86 and the axis of the reciprocating screw rod 72 are parallel to each other. The end of the reciprocating screw rod 72 away from the heat dissipation motor passes through the outer wall of the heat dissipation box 71. One of the synchronous wheels 88 is coaxially fixed to the end of the reciprocating screw rod 72 protruding from the heat dissipation box 71, and the other synchronous wheel 88 is coaxially fixed on the rotating shaft of the heat dissipation impeller 86. The synchronous belt 89 is tensioned to connect the two synchronous wheels 88. The inner ring of the thermal expansion and contraction ring 87 is coaxially fixed to the wheel surface of the synchronous wheel 88 located on the heat dissipation impeller 86, and the outer ring wall of the thermal expansion and contraction ring 87 is in rolling contact with the synchronous belt 89.

[0042] Reference Figure 1 and Figure 3 When the components in the housing 1 generate heat energy when running for a long time, the housing 1 heats up and transfers the heat energy to the thermal expansion and contraction plate 83 through the heat dissipation box 71. The thermal expansion and contraction plate 83 heats up and expands, driving the start plate to slide in the direction close to the reciprocating screw 72. The insert 82 is embedded in the insert groove 721. The contact switch 85 abuts against the insert 82 and is turned on. The opening and closing motor 84 is energized and runs, driving the reciprocating screw 72 to rotate on the inner wall of the heat dissipation box 71, realizing the directional start of the opening and closing motor 84, reducing energy loss, thereby reflecting the concept of energy saving. At the same time, the synchronous belt 89 is tensioned to connect the two synchronous wheels 88, driving the heat dissipation impeller 86 to rotate. The air outlet end of the heat dissipation impeller 86 faces the exhaust hole and the air supply hole, driving the air flow in the exhaust hole and the air supply hole. The air is in full contact with the surface of the heat dissipation box 71 and heat exchange is performed to achieve cooling of the heat dissipation box 71. At the same time, the thermal expansion and contraction ring 87 converts part of the kinetic energy into thermal energy. The thermal expansion and contraction ring 87 heats up and expands, further increasing the tension of the synchronous belt 89 between the two synchronous wheels 88, thereby ensuring the stability of driving the heat dissipation impeller 86 to rotate.

[0043] The implementation principle of a high-sealed air-cooled explosion-proof motor in the embodiment of the present application is as follows: when the motor is installed, the cover body 2 covers the inner cavity of the shell body 1, the sealing hole 21 corresponds to the sealing cavity 11 one by one and is connected, the end of the sealing bolt 62 passes through the sealing hole 21 and is threaded and fixed to the inner wall of the sealing cavity 11, the end of the sealing bolt 62 abuts against the surface of the sealing piston 64 and drives the sealing piston 64 to slide in the direction close to the inlet air passage 13, the air pressure in the inlet air passage 13 increases, and at the same time, the surface of the cover body 2 abuts against the surface of the shell body 1 to form a seal, the air in the inlet air passage 13 enters the inner cavity of the sealing ring bag 61 through the air supply passage 23, the surface of the sealing ring bag 61 is pressurized and expanded and abuts against the surface of the sealing bolt 62 to form a limit, so that the sealing bolt 62 is not easy to deviate in the sealing hole 21 Rotate, thereby ensuring high sealing between the cover body 2 and the shell 1; at the same time, the inner wall of the tooth groove 641 meshes with the tooth surface of the gear 66, driving the gear 66 to rotate on the inner wall of the rotating chamber 12, driving the rack 65 to slide along the inner wall of the rotating chamber 12 toward the sealing ring chamber 22, and the end of the rack 65 is embedded in the sealing ring chamber 22 and squeezes the surface of the sealing ring capsule 61. The surface of the sealing ring capsule 61 is compressed and deformed, the volume of the sealing ring capsule 61 becomes smaller, and the air pressure in the sealing ring capsule 61 increases, further improving the tightening force between the surface of the sealing ring capsule 61 and the surface of the sealing bolt 62, so that foreign impurities are not easy to enter the inner cavity of the shell 1 from the connection between the shell 1 and the cover body 2, thereby ensuring the stability of the operation of the main shaft 3, making the main shaft 3 not easy to wear, thereby extending the service life of the motor.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. Highly sealed air-cooled explosion-proof motor, characterized by: The invention comprises a shell (1), a cover (2), a main shaft (3), a chuck (4), a driving cylinder (5) and a sealing assembly (6), wherein the sealing assembly (6) comprises a sealing ring capsule (61) and a sealing bolt (62), wherein the surface of the cover (2) is provided with a sealing hole (21) for the end of the sealing bolt (62) to pass through, and the surface of the shell (1) is provided with a sealing cavity (11) for the end of the sealing bolt (62) to be embedded in, and when the end of the sealing bolt (62) passes through the sealing hole (21) and is screwed and fixed to the inner wall of the sealing cavity (11), the surface of the cover (2) is pressed against the surface of the shell (1) and the inner cavity of the shell (1) is closed, and the surface of the cover (2) facing the shell (1) is provided with a sealing ring capsule (61) for accommodating the sealing ring capsule (61). 1), the sealing ring cavity (22) is connected to the sealing hole (21), one side of the sealing ring capsule (61) is pressed against the surface of the shell (1) to form a seal, and the other side of the sealing ring capsule (61) is pressed against the surface of the sealing bolt (62) to form a limit, one end of the main shaft (3) is rotatably connected to the inner wall of the shell (1), the other end of the main shaft (3) is penetrated through the surface of the cover body (2), the chuck (4) is connected to the end of the main shaft (3) protruding from the cover body (2), the driving cylinder (5) is connected to the surface of the shell (1), the piston rod of the driving cylinder (5) is penetrated through the outer wall of the shell (1) and is connected to the driving end of the chuck (4), when the piston rod of the driving cylinder (5) is extended, the chuck (4) releases the tool.

2. The highly sealed air-cooled explosion-proof motor according to claim 1 is characterized in that: The sealing assembly (6) further comprises an elastic member (63) and a sealing piston (64); an inner wall of the sealing cavity (11) is provided with an inlet flow channel (13); the inlet flow channel (13) penetrates through the outer wall of the shell (1) in a direction close to the cover body (2); a supply flow channel (23) is provided on the surface of the cover body (2) facing the inlet flow channel (13); the supply flow channel (23) is connected to the inner cavity of the sealing ring bag (61); one end of the elastic member (63) in the elastic force direction is connected to the bottom wall of the sealing cavity (11); the other end of the elastic member (63) in the elastic force direction is connected to the surface of the sealing piston (64); the elastic member (63) has a tendency to cause the sealing piston (64) to slide in a direction away from the inlet flow channel (13) due to the elastic force.

3. The highly sealed air-cooled explosion-proof motor according to claim 2 is characterized in that: The sealing assembly (6) further comprises a gear (66) and a rack (65); the inner wall of the sealing chamber (11) is provided with a rotating chamber (12) for the gear (66) to rotate; the surface of the sealing piston (64) is provided with a tooth groove (641) meshing with the tooth surface of the gear (66); the rotating chamber (12) penetrates the outer wall of the shell (1) in a direction approaching the cover body (2); the rack (65) is slidably connected to the inner wall of the rotating chamber (12) and meshes with the gear (66); the sliding direction of the rack (65) and the sliding direction of the sealing piston (64) are parallel to each other; when the cover body (2) covers the shell (1), the rotating chamber (12) is connected to the sealing ring chamber (22); the end of the rack (65) can be embedded in the sealing ring chamber (22) and squeeze the surface of the sealing ring bag (61).

4. The highly sealed air-cooled explosion-proof motor according to claim 1 is characterized in that: The shell (1) is connected to a heat dissipation assembly (7), the heat dissipation assembly (7) comprising a heat dissipation box (71), a reciprocating screw (72) and a heat dissipation piston (73); the heat dissipation box (71) is connected to the surface of the shell (1); the reciprocating screw (72) is rotatably connected to the inner wall of the heat dissipation box (71); the heat dissipation piston (73) is threadedly connected to the outer wall of the reciprocating screw (72); the heat dissipation piston (73) separates the inner cavity of the heat dissipation box (71) into a first heat dissipation section (711) and a second heat dissipation section (712); an air outlet hole (713) is provided on the inner wall of the first heat dissipation section (711); the air outlet hole (713) is connected to the inner cavity of the shell (1); an air inlet hole (715) is provided on the inner wall of the second heat dissipation section (712); the air inlet hole (715) is connected to the inner cavity of the shell (1).

5. The highly sealed air-cooled explosion-proof motor according to claim 4 is characterized in that: The heat dissipation component (7) further comprises a one-way valve (74), a one-way valve (75), a one-way valve (76) and a one-way valve (77); an inner wall of the heat dissipation section (711) away from the shell (1) is provided with an air supply hole (714); the air supply hole (714) penetrates the outer wall of the heat dissipation box (71); an inner wall of the heat dissipation section (712) away from the shell (1) is provided with an exhaust hole (716); the exhaust hole (716) penetrates the outer wall of the heat dissipation box (71); the one-way valve (74) is connected to the inner wall of the exhaust hole (713); the one-way valve The one-way valve (74) is connected to the inner wall of the air inlet hole (715), and the one-way valve (75) is connected to the inner wall of the air inlet hole (715). The one-way valve (75) is connected to the inner wall of the air supply hole (714). The one-way valve (76) is connected to the inner wall of the air supply hole (714). The one-way valve (76) is connected to the outer wall of the air supply hole (714). The one-way valve (77) is connected to the inner wall of the air exhaust hole (716). The one-way valve (77) is connected to the inner wall of the air exhaust hole (716). The air in the air exhaust hole (716) is discharged to the outside.

6. The highly sealed air-cooled explosion-proof motor according to claim 4 is characterized in that: The heat dissipation box (71) is connected to an opening and closing assembly (8), and the opening and closing assembly (8) comprises an opening and closing plate (81), an insert (82), a thermal expansion and contraction plate (83) and an opening and closing motor (84). An opening and closing cavity (717) for sliding the opening and closing plate (81) is provided on the inner wall of the heat dissipation box (71). The sliding direction of the opening and closing plate (81) and the axis of the reciprocating screw (72) are parallel to each other. The opening and closing motor (84) is connected to the end of the opening and closing plate (81) facing the reciprocating screw (72). The axis of the reciprocating screw (72) and the opening and closing motor (84) are parallel to each other. ) motor axis line coincides, the insert (82) is connected to the motor shaft of the opening and closing motor (84), the end surface of the reciprocating screw (72) is provided with an insert groove (721) for the insert (82) to be inserted, one end of the thermal expansion and contraction plate (83) is connected to the inner wall of the opening and closing cavity (717), and the other end of the thermal expansion and contraction plate (83) is connected to the plate surface of the opening and closing plate (81), when the thermal expansion and contraction plate (83) heats up and expands, the opening and closing plate (81) is driven to slide in the direction close to the reciprocating screw (72), and the insert (82) is inserted into the insert groove (721).

7. The highly sealed air-cooled explosion-proof motor according to claim 6, characterized in that: The opening and closing assembly (8) further comprises a contact switch (85), wherein the contact switch (85) is connected to the inner wall of the embedding groove (721), and the contact switch (85) is electrically connected to the opening and closing motor (84). When the embedding block (82) is embedded in the embedding groove (721), the contact switch (85) abuts against the embedding block (82) and is turned on, and the opening and closing motor (84) is energized and operates.

8. The highly sealed air-cooled explosion-proof motor according to claim 6, characterized in that: The opening and closing assembly (8) further comprises a heat dissipation impeller (86), wherein the heat dissipation impeller (86) is rotatably connected to the surface of the heat dissipation box (71), and an air outlet end of the heat dissipation impeller (86) faces the air supply hole (714) and the air exhaust hole (716).

9. The highly sealed air-cooled explosion-proof motor according to claim 8, characterized in that: The opening and closing assembly (8) further comprises at least two synchronous wheels (88) and a synchronous belt (89) used in combination with the synchronous wheels (88); the axis of the reciprocating screw (72) and the axis of the heat dissipation impeller (86) are parallel to each other; the end of the reciprocating screw (72) passes through the outer wall of the heat dissipation box (71) and is coaxially connected to one of the synchronous wheels (88); the other synchronous wheel (88) is coaxially connected to the rotating shaft of the heat dissipation impeller (86); and the synchronous belt (89) is tensioned to connect the two synchronous wheels (88).

10. The highly sealed air-cooled explosion-proof motor according to claim 9, characterized in that: The opening and closing assembly (8) further comprises a heat expansion and contraction ring (87), the inner ring of the heat expansion and contraction ring (87) being coaxially connected to the wheel surface of one of the synchronous wheels (88), the outer ring of the heat expansion and contraction ring (87) being in rolling contact with a synchronous belt (89), and when the heat expansion and contraction ring (87) is heated and expanded, the synchronous belt (89) is tensioned to connect the two synchronous wheels (88).

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