Sealing device of dustproof explosion-proof motor

Abstract

The sealing device comprises a shell, an output shaft is movably installed in the middle of an inner cavity of the shell through a bearing, a rotor is fixedly installed in the middle of the output shaft, a stator is fixedly installed at the bottom of the inner cavity of the shell, a first fan is fixedly installed at one end of the output shaft, and a second fan is fixedly installed at the other end of the output shaft. A liquid storage tank filled with cooling liquid is fixedly installed at the bottom of the shell, a bearing plate is fixedly installed outside the liquid storage tank, a sealing ring is fixed to the surface of the top of the bearing plate, an isolation hood is placed on the top, located on the inner wall of the sealing ring, of the bearing plate, and the front portion and the rear portion of the isolation hood are each provided with a fixing groove. The front portion and the rear portion of the bearing plate are each provided with a retention assembly meshed with the corresponding retention groove, and a plurality of flow guide holes are formed in the surface of the front portion and the surface of the rear portion of the isolation hood. The sealing structure is good in overall sealing effect and does not interfere with effective rotation of the output shaft.

Description

Technical Field

[0001] The invention relates to the technical field of motors, and in particular to a sealing device for a dust-proof and explosion-proof motor. Background Art

[0002] A motor is an electrical device that is used for rotational driving after being powered on. Depending on the application scenario, different types of motors can be selected. For example, when using a motor in a flammable and explosive environment, a dust-proof and explosion-proof motor is required. This type of motor will not generate sparks and come into contact with the outside air during operation, so there will be no sparks coming into contact with dust or other combustibles in the air to cause an explosion, and it is highly safe to use.

[0003] When the explosion-proof motor is running, there will be a certain gap between the output shaft and the shell on the motor, so that dust can enter the interior of the motor shell through the gap, and then it is easy for the dust to contact the inside of the shell and cause an explosion. At this time, it is necessary to consider how to seal the gap without interfering with the normal operation of the output shaft. For this purpose, a sealing device for dust-proof and explosion-proof motors is proposed. Summary of the invention

[0004] Technical issues solved: In view of the deficiencies in the prior art, the present invention provides a sealing device for a dust-proof and explosion-proof motor, thereby solving the technical problems mentioned in the background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a sealing device for a dust-proof and explosion-proof motor, comprising a shell, an output shaft is movably mounted in the middle of the inner cavity of the shell through a bearing, a rotor is fixedly mounted in the middle of the output shaft, a stator is fixedly mounted at the bottom of the inner cavity of the shell, a first fan is fixedly mounted at one end of the output shaft, a liquid storage tank filled with coolant is fixedly mounted at the bottom of the shell, two baffle plates are protruding from the top of the inner cavity of the liquid storage tank, a bearing plate is fixedly mounted on the outside of the liquid storage tank, and a sealing ring is fixedly mounted on the top surface of the bearing plate The bearing plate is located on the top of the inner wall of the sealing ring and an isolation cover is placed thereon. A retaining groove is provided at the front and rear parts of the isolation cover. A retaining component that engages with the corresponding retaining groove is provided at the front and rear parts of the bearing plate. A plurality of guide holes are provided on the front and rear surfaces of the isolation cover. A dust-isolating barrier net is fixedly installed on the surface of the guide hole. A second fan is fixedly installed at one end of the output shaft located outside the shell. A merging groove is provided on one side of the isolation cover. Two merging components are provided inside the merging groove, and the second fan is provided in the inner cavity between the two merging components.

[0006] In one possible implementation, the retaining assembly includes a positioning groove formed on a supporting plate, a retaining rod is fixedly installed inside the positioning groove, a clamping plate that can be clamped in the inner cavity of the retaining groove is movably installed on one end of the retaining rod, a return spring is fixedly installed on the surface of the clamping plate opposite to the positioning groove, and the other end of the return spring is fixed to the inner wall of the positioning groove.

[0007] In one possible implementation, the merging component includes a guide rod fixed in the merging groove, a retaining spring is fixedly installed on the outside of the guide rod, a closing plate is movably installed on one end of the guide rod, an assembly groove is provided on the side of the closing plate facing the second fan, a plurality of isolation holes are provided on the surface of the assembly groove, and an inflatable bag is fixedly installed on the outer surface of the closing plate located on the plurality of isolation holes.

[0008] In a possible implementation, an isolation component for isolating impurities is provided at one end of the output shaft located in the inner cavity of the shell, and the inner cavity surface structure of the shell located on one side of the isolation component is coated with insulating paint; The isolation component includes a limit frame fixed in the inner cavity of the shell, an assembly ring is movably installed in the inner cavity of the limit frame, an assembly frame is fixedly installed inside the assembly ring, a plurality of groups of fan blades are fixedly installed in the middle of the inner cavity of the assembly frame, a retaining ring is fixedly installed at one end of the plurality of groups of fan blades, and the inner cavity of the retaining ring is fixed to one end of the output shaft, a moisture absorbing layer is fixedly installed on the side of the assembly frame facing the rotor, a dust net is fixedly installed on the other side of the assembly frame, and an isolation ring is fixed to the inner wall of the shell.

[0009] In a possible implementation, a vent hole is provided at the bottom of the shell, a heat-conducting hole corresponding to the vent hole is provided at the top of the liquid storage tank, a heat dissipation hole is provided at two protruding positions on the top of the liquid storage tank, and an impurity collection component is also provided in the inner cavity of the liquid storage tank; The collecting component includes a storage groove opened on one side of the liquid storage tank, a storage box is movably installed in the inner cavity of the storage groove, a plurality of screening holes are opened at the bottom of the inner cavity of the storage box, a sealing strip is fixedly installed on the outside of the liquid storage tank, and a tightening bolt is also threadedly connected to the storage box on the outside of the liquid storage tank.

[0010] In a possible implementation, an output component for power transmission is disposed on the top of the inner cavity of the liquid storage tank, and a humidification component is disposed outside the output component.

[0011] In one possible implementation, the output component includes a gear groove opened on the outside of the assembly ring, the surface of the gear groove is meshed with a transmission gear, a support shaft is fixedly installed in the middle of the transmission gear, a positioning plate is fixedly installed on the support shaft through a bearing, a cam is fixedly installed on one end of the support shaft, and the bottom of the cam is transmission-connected to the surface of the humidification component.

[0012] In one possible implementation, the humidification component includes a support plate fixed to the inner wall of the liquid storage tank, a reciprocating presser is fixedly mounted on the surface of the support plate, a pressing plate whose surface can fit with the cam surface is fixedly mounted on the top of the presser, a positioning spring is fixedly mounted on the inner cavity of the presser, a liquid transmission pipe is fixedly mounted on one side of the presser, a water pipe groove is opened on the surface of the liquid storage tank, a water pipe for water absorption is fixedly mounted on the inner cavity of the water pipe groove, and one end of the water pipe is fixedly mounted on the bottom of the presser, wherein the other end of the water pipe is fixedly mounted on the bottom of the inner cavity of the liquid storage tank, and two atomizing nozzles are fixedly mounted on one end of the transmission pipe located in the inner cavity of the shell.

[0013] In one possible implementation, a retaining groove is provided on the surface of the shell, a circulation pipe is fixedly installed in the inner cavity of the retaining groove, a plurality of drainage holes for liquid discharge are provided on the surface of the circulation pipe, and a guide plate for guiding liquid movement is also fixedly installed on the surface of the shell.

[0014] In a possible implementation, a separation frame for blocking impurities is placed on the heat dissipation hole at the top of the liquid storage tank, and the separation frame is located at the bottom of the guide plate.

[0015] Beneficial effects: In this solution, the outside of the motor housing is effectively sealed by combining the isolation cover with the liquid storage tank. At the same time, the connection gap between the motor output shaft and the housing in the closed state can be isolated by combining the components, thereby further improving the sealing effect inside the housing without interfering with the normal operation of the output shaft. The housing inside the motor can blow air from the inside to the outside of the running motor through the isolation component, thereby achieving dust prevention when the motor is running. At the same time, it can further block the dust inside the housing to prevent dust and other impurities from entering the housing. The output component and the humidifying component can be used to cooperate to accelerate the heat dissipation inside the shell, thereby improving the heat dissipation effect of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the top structure of the liquid storage tank of the present invention; Figure 3 It is a schematic diagram of the overall cross-sectional structure of the present invention; Figure 4 It is a schematic diagram of the cross-sectional structure of the liquid storage tank and the shell of the present invention; Figure 5 For the present invention Figure 4 A is a schematic diagram of the enlarged structure of the middle part; Figure 6 It is a schematic diagram of the back structure of the liquid storage tank of the present invention; Figure 7 It is a schematic diagram of the isolation assembly structure of the present invention; Figure 8 It is a schematic diagram of the structure of the retaining assembly of the present invention; Fig. 9 It is a schematic diagram of the structure of the combined components of the present invention; Fig.10 It is a schematic diagram of the cross-sectional structure of the merging component of the present invention; Fig.11 It is a side schematic diagram of the closing plate of the present invention; Fig.12 It is a schematic diagram of the water level inside the liquid storage tank of the present invention.

[0018] Legend: 1. Shell; 2. Output shaft; 3. Rotor; 4. Stator; 5. First fan; 6. Liquid storage tank; 7. Loading plate; 8. Sealing ring; 9. Isolation cover; 10. Retention groove; 11. Retention assembly; 1101. Positioning groove; 1102. Retention rod; 1103. Clamping plate; 1104. Return spring; 12. air guide hole; 13. barrier net; 14. second fan; 15. merging slot; 16. Merging assembly; 1601. Guide rod; 1602. Retention spring; 1603. Closing plate; 1604. Assembly groove; 1605. Isolation hole; 1606. Inflatable bag; 17. Isolation assembly; 1701. Limiting frame; 1702. Assembly ring; 1703. Assembly frame; 1704. Fan blade; 1705. Retention ring; 1706. Moisture absorption layer; 1707. Dustproof net; 1708. Isolation ring; 18. Ventilation hole; 19. Heat conduction hole; 20. Heat dissipation hole; 21. Collection assembly; 2101. Storage slot; 2102. Storage box; 2103. Screening hole; 2104. Sealing strip; 2105. Tightening bolt; 22. Output assembly; 2201. Gear slot; 2202. Transmission gear; 2203. Support shaft; 2204. Positioning plate; 2205. Cam; 23. Humidification assembly; 2301. Support plate; 2302. Presser; 2303. Pressing plate; 2304. Positioning spring; 2305. Transmission pipe; 2306. Water pipe groove; 2307. Water guide pipe; 2308. Atomizing nozzle; 24. Positioning slot; 25. Circulation pipe; 26. Drain hole; 27. Guide plate; 28. Separation frame. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention can be implemented in various forms, so the present invention is not limited to the embodiments described below. In addition, in order to more clearly describe the present invention, components that are not connected with the invention will be omitted from the drawings. The technical solution in the embodiment of the present application is to solve the problems of the above-mentioned background technology, and the overall idea is as follows: Reference Manual Attached Figure 1-12 ; Example 1: Reference specification attached Figure 4 This embodiment introduces a specific structure of a sealing device for a dust-proof and explosion-proof motor, including a housing 1, an output shaft 2 is movably mounted in the middle of the inner cavity of the housing 1 through a bearing, a rotor 3 is fixedly mounted in the middle of the output shaft 2, a stator 4 is fixedly mounted at the bottom of the inner cavity of the housing 1, and a first fan 5 is fixedly mounted at one end of the output shaft 2. When the motor is running, the first fan 5 is driven to rotate through the output shaft 2, and at this time, the wind force generated by the rotation of the first fan 5 can be used to dissipate heat inside the housing 1; Reference Manual Attached Figure 1 A liquid storage tank 6 filled with coolant is fixedly installed at the bottom of the shell 1. The coolant can be a non-conductive coolant. Two baffle plates are protruded from the top of the inner cavity of the liquid storage tank 6. A bearing plate 7 is fixedly installed on the outside of the liquid storage tank 6. A sealing ring 8 is fixed on the top surface of the bearing plate 7. An isolation cover 9 is placed on the top of the inner wall of the sealing ring 8 of the bearing plate 7. A retaining groove 10 is opened at the front and rear parts of the isolation cover 9. A retaining component 11 that bites the corresponding retaining groove 10 is provided at the front and rear parts of the bearing plate 7. Reference Manual Attached Figure 8 The retaining assembly 11 includes a positioning groove 1101 provided on the bearing plate 7, a retaining rod 1102 is fixedly installed inside the positioning groove 1101, a clamping plate 1103 which can be clamped in the inner cavity of the retaining groove 10 is movably installed on one end of the retaining rod 1102, a reset spring 1104 is fixedly installed on the surface of the clamping plate 1103 located on the opposite side of the positioning groove 1101, and the other end of the reset spring 1104 is fixed to the inner wall of the positioning groove 1101; Reference Manual Attached Figure 1A plurality of guide holes 12 are provided on the front and rear surfaces of the isolation cover 9, a dust isolation barrier 13 is fixedly installed on the surface of the guide hole 12, a second fan 14 is fixedly installed on one end of the output shaft 2 located outside the housing 1, a merging groove 15 is provided on one side of the isolation cover 9, two merging components 16 are arranged inside the merging groove 15, and the second fan 14 is arranged in the inner cavity between the two merging components 16; Reference Manual Attached Fig.10 The merging assembly 16 includes a guide rod 1601 fixed to the merging groove 15, a retaining spring 1602 is fixedly installed on the outside of the guide rod 1601, a closing plate 1603 is movably installed on one end of the guide rod 1601, an assembly groove 1604 is opened on the side of the closing plate 1603 facing the second fan 14, a plurality of isolation holes 1605 are opened on the surface of the assembly groove 1604, and an inflatable bag 1606 is fixedly installed on the outer surface of the plurality of isolation holes 1605 of the closing plate 1603; Reference Manual Attached Figure 1 , 8 When sealing the outside of the shell 1, the isolation cover 9 can be placed directly on the supporting plate 7. At this time, the isolation cover 9 will cooperate with the liquid storage tank 6 to wrap the shell 1 up and down, thereby realizing the preliminary sealing of the outside of the shell 1 and improving the sealing of the inside of the shell 1. At the same time, the top of the supporting plate 7 is fitted with the outer wall of the isolation cover 9 through the rubber sealing ring 8, thereby enhancing the sealing effect of the isolation cover 9 on the outside of the shell 1. When the isolation cover 9 needs to be removed, the bottom of the clamping plate 1103 can be pressed, and then the clamping plate 1 One end of 103 will move toward the outside of the retaining groove 10 on the isolation cover 9 with the retaining rod 1102 as the center. At this time, the clamping plate 1103 will synchronously squeeze the return spring 1104 inside the positioning groove 1101. When the connection between the clamping plate 1103 and the retaining groove 10 is released, the isolation cover 9 and the bearing plate 7 can be directly pulled to separate. At this time, the isolation cover 9 is conveniently separated. When installing, the inside of the retaining groove 10 on the isolation cover 9 and the top end of the clamping plate 1103 can be merged; Reference Manual Attached Figure 1 At the same time, since the motor needs to consider the problem of heat dissipation when it is running, a plurality of guide holes 12 are provided on the isolation cover 9 to discharge the heat from the top of the housing 1. At the same time, in order to prevent dust and other impurities from covering the housing 1, the outside of the plurality of guide holes 12 is blocked by a barrier net 13 to block dust and other impurities; Reference Manual Attached Fig. 9, the output shaft 2 on the motor needs to extend outside the shell 1 for driving, and the output shaft 2 of the present application needs to pass through the merging component 16 after passing through the shell 1, and the airbag 1606 is made of elastic rubber material, so when the airbag 1606 is in an uninflated state, the airbag 1606 is flat, and the outside of the airbag 1606 fits with the outer wall of the output shaft 2, so that dust and other impurities cannot enter the inside of the shell 1 through the connection gap between the output shaft 2 and the shell 1, thereby improving the sealing inside the shell 1, avoiding dust and other impurities from entering the inside of the shell 1 and contacting with the electric current to cause dust explosion, thereby improving the safety of the motor operation; Reference Manual Attached Fig.10 When the motor is in operation, the output shaft 2 drives the second fan 14 to rotate inside the assembly slot 1604 inside the closing plate 1603. At this time, the rotating second fan 14 drives the airflow to blow toward the airbag 1606, and then the airbag 1606 is agitated by the airflow. At this time, the outer wall of the agitated airbag 1606 will not contact the outer wall of the output shaft 2. Therefore, when the output shaft 2 is running, the airbag 1606 will not interfere with the operation of the output shaft 2, thereby ensuring the stability of the operation of the output shaft 2. Reference Manual Attached Fig.10 When separating the isolation cover 9 and the supporting plate 7, it is necessary to manually separate the closing plates 1603 on the two retaining components 11. At this time, the two closing plates 1603 respectively enter the inner cavity of the merging groove 15 along the guide rod 1601. At this time, the position restriction of the isolation cover 9 on the output shaft 2 is released, and the isolation cover 9 can be separated normally.

[0020] Embodiment 2: This embodiment is an improvement based on Embodiment 1: Reference Manual Attached Figure 3 An isolation component 17 for isolating impurities is provided at one end of the output shaft 2 located in the inner cavity of the housing 1, and the inner cavity surface structure of the housing 1 located on one side of the isolation component 17 is coated with insulating paint. The inner part of the housing 1 is coated with insulating paint, so that the inner part of the housing 1 will not easily be conductive; Reference Manual Attached Figure 7 , wherein the isolation component 17 includes a limit frame 1701 fixed in the inner cavity of the shell 1, an assembly ring 1702 is movably installed in the inner cavity of the limit frame 1701, an assembly frame 1703 is fixedly installed inside the assembly ring 1702, a plurality of groups of fan blades 1704 are fixedly installed in the middle of the inner cavity of the assembly frame 1703, a retaining ring 1705 is fixedly installed at one end of the plurality of groups of fan blades 1704, and the inner cavity of the retaining ring 1705 is fixed to one end of the output shaft 2, a moisture absorbing layer 1706 is fixedly installed on the side of the assembly frame 1703 facing the rotor 3, a dustproof net 1707 is fixedly installed on the other side of the assembly frame 1703, and an isolation ring 1708 is fixed on the inner wall of the shell 1, and the isolation ring 1708 is made of rubber; Reference Manual Attached Figure 3 , 4 A vent hole 18 is provided at the bottom of the housing 1, a heat conducting hole 19 corresponding to the vent hole 18 is provided at the top of the liquid storage tank 6, and a heat dissipation hole 20 is provided at two protruding positions on the top of the liquid storage tank 6. The heat dissipation hole 20 is used to reduce the temperature of the coolant inside the liquid storage tank 6, wherein the inner cavity of the liquid storage tank 6 is also provided with an impurity collection component 21; Reference Manual Attached Figure 3 , 4 , wherein the collecting assembly 21 comprises a receiving groove 2101 provided on one side of the liquid storage tank 6, a receiving box 2102 is movably installed in the inner cavity of the receiving groove 2101, a plurality of screening holes 2103 are provided at the bottom of the inner cavity of the receiving box 2102, a sealing strip 2104 is fixedly installed on the outside of the liquid storage tank 6 on the receiving box 2102, the sealing strip 2104 can improve the sealing performance of the connection between the receiving box 2102 and the liquid storage tank 6, and a tightening bolt 2105 is also threadedly connected to the outside of the liquid storage tank 6 on the receiving box 2102; Reference Manual Attached Figure 7 When the output shaft 2 rotates, the retaining ring 1705 can be driven to rotate. When the retaining ring 1705 rotates, the fan blades 1704 drive the assembly frame 1703 to cooperate with the assembly ring 1702 to rotate inside the limit frame 1701. When the assembly frame 1703 rotates, the outer wall of the assembly frame 1703 and the inner wall gap of the shell 1 are isolated by the isolation ring 1708 to isolate dust and other impurities. At the same time, the rotating fan blades 1704 will accelerate the airflow and connect it to the output shaft 2 and the outside of the shell 1 again. At this time, the airflow generated by the rotating fan blades 1704 is used to realize the function of gas barrier for the external connection between the shell 1 and the output shaft 2, thereby effectively preventing dust and other impurities from entering the interior of the shell 1, thereby further enhancing the dust prevention effect inside the shell 1. When the retaining ring 1705 rotates, the dust and other impurities are further blocked by the dustproof net 1707 and the moisture absorption layer 1706, thereby preventing dust and other impurities from contacting with the arc generated by the operation of the output shaft 2 and the rotor 3 to cause explosion; Reference Manual Attached Figure 3 , 4, the liquid storage tank 6 is filled with non-conductive cooling liquid. Since the shell 1 and the liquid storage tank 6 are connected from top to bottom through the vent hole 18 and the heat conducting hole 19, when heat is generated inside the shell 1, the heat flow will contact the cooling liquid inside the liquid storage tank 6, thereby achieving preliminary cooling of the shell 1, and the airflow generated by the rotation of the fan blades 1704 will also accelerate the airflow speed inside the shell 1, thereby better contacting with the cooling liquid for cooling. At the same time, when impurities such as dust fall into the liquid storage tank 6, the fallen dust and other impurities will enter the storage box 2102 inside the collection component 21, and the storage box 2102 will perform solid-liquid separation through the screening hole 2103. When there are too many impurities in the storage box 2102, the tightening bolt 2105 can be manually rotated to separate the tightening bolt 2105 from the liquid storage tank 6, and then the storage box 2102 can be taken out from the storage groove 2101 inside the liquid storage tank 6 to clean the dust and other impurities; Reference Manual Attached Fig.12 Since two baffle plates protrude from the top of the inner cavity of the liquid storage tank 6, the coolant can achieve water level balance inside the liquid storage tank 6, and the liquid storage tank 6 can isolate the inside of the shell 1 through the liquid, and the liquid inside the liquid storage tank 6 can contact the external air through the heat dissipation holes 20 to achieve the function of liquid cooling, further improving the heat dissipation effect inside the shell 1.

[0021] Embodiment 3: This embodiment is an improvement based on Embodiments 1 and 2: Reference Manual Attached Figure 4 The top of the inner cavity of the liquid storage tank 6 is provided with an output component 22 for power transmission, and a humidification component 23 is provided outside the output component 22; Reference Manual Attached Figure 5 The output assembly 22 includes a gear groove 2201 provided outside the assembly ring 1702, a transmission gear 2202 is meshed on the surface of the gear groove 2201, a support shaft 2203 is fixedly installed in the middle of the transmission gear 2202, a positioning plate 2204 is fixedly installed on the support shaft 2203 through a bearing, a cam 2205 is fixedly installed at one end of the support shaft 2203, and the bottom of the cam 2205 is in transmission connection with the surface of the humidification assembly 23; Reference Manual Attached Figure 5The humidification component 23 includes a support plate 2301 fixed to the inner wall of the liquid storage tank 6, a reciprocating presser 2302 is fixedly installed on the surface of the support plate 2301, a pressing plate 2303 whose surface can be in contact with the surface of the cam 2205 is fixedly installed on the top of the presser 2302, a positioning spring 2304 is fixedly installed in the inner cavity of the presser 2302, a liquid transmission pipe 2305 is fixedly installed on one side of the presser 2302, and the liquid storage tank 6 is fixedly provided with a liquid transmission pipe 2305. A water pipe groove 2306 is provided on the surface, and a water pipe 2307 for water absorption is fixedly installed in the inner cavity of the water pipe groove 2306, and one end of the water pipe 2307 is fixedly installed at the bottom of the presser 2302, wherein the other end of the water pipe 2307 is fixedly installed at the bottom of the inner cavity of the liquid storage tank 6, and two atomizing nozzles 2308 are fixedly installed at one end of the transmission pipe 2305 located in the inner cavity of the shell 1, and the water absorption end of the water pipe 2307 is arranged at the bottom of the collecting component 21; Reference Manual Attached Figure 5 When the output shaft 2 drives the isolation component 17 to rotate, the fan blade 1704 on the isolation component 17 drives the transmission gear 2202 to rotate through the gear groove 2201. At this time, the rotating transmission gear 2202 will drive the support shaft 2203 to rotate. At this time, the rotating support shaft 2203 will drive the cam 2205 to rotate synchronously, so that the rotating cam 2205 will continuously squeeze the pressing plate 2303 on the humidification component 23, and then squeeze the presser 2302 through the pressing plate 2303. At this time, the squeezed presser 2302 draws coolant through the water pipe 2307 and transmits it to the transmission pipe 2305, and then transmits it to the transmission pipe 2305. The delivery pipe 2305 utilizes the atomizing nozzle 2308 to atomize and spray the liquid inside the shell 1, and the sprayed atomized liquid can absorb heat better inside the shell 1, and the dustproof net 1707 on the isolation component 17 cooperates with the hygroscopic layer 1706 to block the atomized liquid, wherein the hygroscopic layer 1706 can be made of cotton material, so that when the output shaft 2 drives the first fan 5 to rotate, the first fan 5 will drive the hot air flow to contact the moist surface of the hygroscopic layer 1706, and at this time, the heat energy will contact the liquid on the surface of the hygroscopic layer 1706, so that the hygroscopic layer 1706 can be used to quickly absorb the heat energy, thereby once again improving the heat dissipation effect inside the shell 1.

[0022] Embodiment 4: This embodiment is an improvement based on Embodiments 1, 2 and 3: Reference Manual Attached Figure 2 The surface of the housing 1 is provided with a positioning groove 24, the inner cavity of the positioning groove 24 is fixedly provided with a circulation pipe 25, the surface of the circulation pipe 25 is provided with a plurality of drainage holes 26 for liquid drainage, and the surface of the housing 1 is also fixedly provided with a guide plate 27 for guiding the movement of the liquid; Reference Manual Attached Figure 2, a separation frame 28 for impurity isolation is placed on the heat dissipation hole 20 at the top of the liquid storage tank 6, and the separation frame 28 is located at the bottom of the guide plate 27; Reference Manual Attached Figure 2 When the humidifying component 23 is running, the coolant can be transported through the circulation pipe 25. Since the circulation pipe 25 is distributed inside the positioning groove 24 on the shell 1 and is arranged around it, the coolant in the transmission circulation pipe 25 can absorb heat from the outer wall of the shell 1, thereby improving the heat dissipation effect of the surface of the shell 1. At the same time, the circulation pipe 25 can also spray the liquid on the surface of the shell 1 through the drainage hole 26. At this time, the coolant can directly absorb heat from the surface of the shell 1, further improving the external heat dissipation effect of the shell 1. The discharged liquid is introduced into the separation frame 28 through the guide plate 27. The separation frame 28 separates the coolant into solid and liquid, and the separated liquid enters the inner cavity of the liquid storage tank 6 again through the heat dissipation hole 20, so that the coolant is in a circulating motion state, thereby better dissipating heat and absorbing heat.

[0023] Working principle: Step 1: The outer part of the housing 1 is sealed by the isolation cover 9 and the liquid storage tank 6, and the use of the combined component 16 can isolate the gap between the housing 1 and the output shaft 2, thereby ensuring the effective sealing of the outer part of the housing 1 and having a good dustproof effect; Step 2: The use of the isolation component 17 achieves the effect of wind resistance, thereby protecting the motor from dust while in operation, and also cooling the interior of the housing 1; Step 3: The cooperation between the output component 22 and the humidification component 23 can better cool down and absorb heat inside the housing 1; Step 4: The circulation pipe 25 cooperates with the drainage hole 26 to dissipate heat from the motor more effectively, and can also realize liquid circulation and liquid cooling.

[0024] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A sealing device for dust and explosion proof motor, characterized in that: The invention comprises a shell (1), wherein an output shaft (2) is movably mounted in the middle of the inner cavity of the shell (1) via a bearing, a rotor (3) is fixedly mounted in the middle of the output shaft (2), a stator (4) is fixedly mounted at the bottom of the inner cavity of the shell (1), a first fan (5) is fixedly mounted at one end of the output shaft (2), a liquid storage tank (6) filled with coolant is fixedly mounted at the bottom of the shell (1), wherein two baffle plates protrude from the top of the inner cavity of the liquid storage tank (6), a bearing plate (7) is fixedly mounted on the outside of the liquid storage tank (6), a sealing ring (8) is fixedly mounted on the top surface of the bearing plate (7), an isolation cover (9) is placed on the top of the inner wall of the sealing ring (8), and the bearing plate (7) is located on the top of the inner wall of the sealing ring (8). The front and rear parts of the isolation cover (9) are each provided with a retaining groove (10), the front and rear parts of the bearing plate (7) are each provided with a retaining assembly (11) that engages with the retaining groove (10), the front and rear surfaces of the isolation cover (9) are each provided with a plurality of air guide holes (12), a dust-isolating barrier net (13) is fixedly mounted on the surface of the air guide hole (12), a second fan (14) is fixedly mounted on one end of the output shaft (2) located outside the housing (1), a merging groove (15) is provided on one side of the isolation cover (9), two merging assemblies (16) are arranged inside the merging groove (15), and the second fan (14) is arranged in an inner cavity between the two merging assemblies (16).

2. A sealing device for a dust and explosion proof motor as claimed in claim 1, characterized in that: The retaining assembly (11) comprises a positioning groove (1101) formed on a supporting plate (7), a retaining rod (1102) being fixedly mounted inside the positioning groove (1101), a clamping plate (1103) being movably mounted on one end of the retaining rod (1102) and being capable of being clamped in the inner cavity of the retaining groove (10), a return spring (1104) being fixedly mounted on a surface of the clamping plate (1103) located opposite to the positioning groove (1101), and the other end of the return spring (1104) being fixed to the inner wall of the positioning groove (1101).

3. The sealing device for a dust and explosion proof motor according to claim 1, characterized in that: The merging component (16) comprises a guide rod (1601) fixed to the merging groove (15); a retaining spring (1602) is fixedly installed on the outside of the guide rod (1601); a closing plate (1603) is movably installed on one end of the guide rod (1601); an assembly groove (1604) is provided on the side of the closing plate (1603) facing the second fan (14); a plurality of isolation holes (1605) are provided on the surface of the assembly groove (1604); and an inflatable bag (1606) is fixedly installed on the outer surface of the plurality of isolation holes (1605) of the closing plate (1603).

4. The sealing device for a dust and explosion proof motor according to claim 1, characterized in that: An isolation component (17) for isolating impurities is disposed at one end of the output shaft (2) located in the inner cavity of the housing (1), and the inner cavity surface structure of the housing (1) located on one side of the isolation component (17) is coated with insulating paint; The isolation component (17) comprises a limit frame (1701) fixed in the inner cavity of the shell (1), the inner cavity of the limit frame (1701) is movably mounted with an assembly ring (1702), the interior of the assembly ring (1702) is fixedly mounted with an assembly frame (1703), a plurality of groups of fan blades (1704) are fixedly mounted in the middle of the inner cavity of the assembly frame (1703), a retaining ring (1705) is fixedly mounted at one end of the plurality of groups of fan blades (1704), and the inner cavity of the retaining ring (1705) is fixed to one end of the output shaft (2), a moisture absorbing layer (1706) is fixedly mounted on the side of the assembly frame (1703) facing the rotor (3), a dustproof net (1707) is fixedly mounted on the other side of the assembly frame (1703), and an isolation ring (1708) is fixedly mounted on the inner wall of the shell (1).

5. The sealing device for a dust and explosion proof motor according to claim 1, characterized in that: The bottom of the shell (1) is provided with a vent hole (18), the top of the liquid storage tank (6) is provided with a heat conduction hole (19) corresponding to the vent hole (18) above and below, and two protruding positions on the top of the liquid storage tank (6) are each provided with a heat dissipation hole (20), wherein the inner cavity of the liquid storage tank (6) is also provided with an impurity collection component (21); The collecting assembly (21) comprises a storage groove (2101) provided on one side of the liquid storage tank (6); a storage box (2102) is movably mounted in the inner cavity of the storage groove (2101); a plurality of screening holes (2103) are provided at the bottom of the inner cavity of the storage box (2102); a sealing strip (2104) is fixedly mounted on the outside of the liquid storage tank (6) on the storage box (2102); and a tightening bolt (2105) is also threadedly connected to the outside of the liquid storage tank (6) on the storage box (2102).

6. The sealing device for a dust and explosion proof motor according to claim 1, characterized in that: An output component (22) for power transmission is arranged at the top of the inner cavity of the liquid storage tank (6), and a humidifying component (23) is arranged outside the output component (22).

7. A sealing device for a dust and explosion proof motor as claimed in claim 6, characterized in that: The output component (22) comprises a gear groove (2201) provided outside the assembly ring (1702); a transmission gear (2202) is meshed on the surface of the gear groove (2201); a support shaft (2203) is fixedly mounted in the middle of the transmission gear (2202); a positioning plate (2204) is fixedly mounted on the support shaft (2203) via a bearing; a cam (2205) is fixedly mounted on one end of the support shaft (2203); and the bottom of the cam (2205) is transmission-connected to the surface of the humidifying component (23).

8. The sealing device for a dust and explosion proof motor according to claim 7, characterized in that: The humidifying assembly (23) comprises a support plate (2301) fixed to the inner wall of the liquid storage tank (6); a reciprocating presser (2302) is fixedly mounted on the surface of the support plate (2301); a pressing plate (2303) whose surface can be in contact with the surface of the cam (2205) is fixedly mounted on the top of the presser (2302); a positioning spring (2304) is fixedly mounted in the inner cavity of the presser (2302); and a liquid transmission device (2304) is fixedly mounted on one side of the presser (2302). The liquid storage tank (6) is provided with a water pipe groove (2306) on its surface, a water pipe (2307) for absorbing water is fixedly installed in the inner cavity of the water pipe groove (2306), and one end of the water pipe (2307) is fixedly installed at the bottom of the presser (2302), wherein the other end of the water pipe (2307) is fixedly installed at the bottom of the inner cavity of the liquid storage tank (6), and two atomizing nozzles (2308) are fixedly installed at one end of the transmission pipe (2305) located in the inner cavity of the shell (1).

9. The sealing device for a dust and explosion proof motor according to claim 1, characterized in that: A retaining groove (24) is provided on the surface of the housing (1), a circulation pipe (25) is fixedly mounted in the inner cavity of the retaining groove (24), a plurality of drainage holes (26) for draining liquid are provided on the surface of the circulation pipe (25), and a guide plate (27) for guiding the movement of liquid is also fixedly mounted on the surface of the housing (1).

10. The sealing device for a dust and explosion proof motor according to claim 1, characterized in that: A separation frame (28) for blocking impurities is placed on the heat dissipation hole (20) at the top of the liquid storage box (6), and the separation frame (28) is located at the bottom of the guide plate (27).

Images