A sealing device for a dust-proof and explosion-proof motor

Abstract

The present invention discloses a sealing device for a dust-proof and explosion-proof motor, which includes a housing. A output shaft is movably installed in the middle of the inner cavity of the housing 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 housing. A first fan is fixedly installed at one end of the output shaft. A liquid storage tank filled with coolant is fixedly installed at the bottom of the housing. A bearing plate is fixedly installed outside the liquid storage tank. A sealing ring is fixed on the top surface of the bearing plate. An isolation cover is placed on the top inside the inner wall of the sealing ring. A retaining groove is opened at the front and rear parts of the isolation cover. A retaining component that engages with the corresponding retaining groove is arranged at the front and rear parts of the bearing plate. A plurality of diversion holes are opened on the front and rear surfaces of the isolation cover; the present invention has good overall sealing effect and does not interfere with the effective rotation of the output shaft.

Description

Technical Field

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

[0002] A motor is an electrical device used for rotational drive after being powered on. According to different application scenarios, different types of motors can be selected. For example, when using a motor in an explosive and flammable environment, a dust-proof and explosion-proof motor is required. Such a motor will not produce sparks when operating and come into contact with external air, so there will be no contact between sparks and dust or other combustibles in the air to cause an explosion, and the use safety is high.

[0003] When the explosion-proof motor is operating, there will be a certain gap between the output shaft on the motor and the housing. In this way, dust can enter the interior of the motor housing through this gap, and then it is easy to have an explosion caused by the contact between the dust and the interior of the housing. At this time, it is necessary to consider how to seal this gap without interfering with the normal operation of the output shaft. For this reason, a sealing device for a dust-proof and explosion-proof motor is proposed. Summary of the Invention

[0004] Technical Problems to be Solved

[0005] Aiming at the deficiencies of 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 art.

[0006] To achieve the above object, the present invention is realized through the following technical solutions: A sealing device for a dust-proof and explosion-proof motor, including a housing. The middle part of the inner cavity of the housing is movably installed with an output shaft through a bearing. The middle part of the output shaft is fixedly installed with a rotor. The bottom of the inner cavity of the housing is fixedly installed with a stator. One end of the output shaft is fixedly installed with a first fan. The bottom of the housing is fixedly installed with a liquid storage tank for filling coolant. Two baffle plates protrude from the top of the inner cavity of the liquid storage tank. A bearing plate is fixedly installed outside the liquid storage tank. A sealing ring is fixed on the top surface of the bearing plate. An isolation cover is placed on the top of the inner wall of the sealing ring. A retaining groove is opened 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 diversion holes are opened on the front and rear surfaces of the isolation cover. A barrier net for dust isolation is fixedly installed on the surface of the diversion holes. A second fan is fixedly installed at one end of the output shaft outside the housing. A merging groove is opened on one side of the isolation cover. Two merging components are arranged inside the merging groove, and the second fan is arranged in the inner cavity between the two merging components.

[0007] In a possible implementation, the retention component includes a positioning groove formed in the bearing plate. A retention rod is fixedly installed inside the positioning groove. One end of the retention rod is movably installed with a clamping plate that can be stuck in the inner cavity of the retention groove. A return spring is fixedly installed on the surface of the clamping plate facing the opposite side of the positioning groove, and the other end of the return spring is fixed to the inner wall of the positioning groove.

[0008] In a possible implementation, the merging component includes a guide rod fixed in the merging groove. A retention spring is fixedly installed outside the guide rod. One end of the guide rod is movably installed with a closing plate. An assembly groove is formed on the side of the closing plate facing the second fan. A number of isolation holes are formed on the surface of the assembly groove. An inflation bag is fixedly installed on the outer surface of the closing plate located outside the number of isolation holes.

[0009] In a possible implementation, one end of the output shaft located inside the housing is provided with an isolation component for impurity isolation, and the inner cavity surface structure of the housing on one side of the isolation component is coated with an insulating coating;

[0010] The isolation component includes a limit frame fixed inside the housing. An assembly ring is movably installed inside the limit frame. An assembly frame is fixedly installed inside the assembly ring. A number of groups of fan blades are fixedly installed in the middle of the inner cavity of the assembly frame. One end of the number of groups of fan blades is fixedly installed with a retention ring, and the inner cavity of the retention ring is fixed to one end of the output shaft. A moisture absorption layer is fixedly installed on the side of the assembly frame facing the rotor, and a dustproof net is fixedly installed on the other side of the assembly frame. An isolation ring is fixed to the inner wall of the housing.

[0011] In a possible implementation, ventilation holes are formed at the bottom of the housing. Heat conduction holes corresponding to the ventilation holes up and down are formed at the top of the liquid storage tank. One heat dissipation hole is formed at each of the two protruding positions at the top of the liquid storage tank. A collection component for impurities is further provided inside the liquid storage tank;

[0012] The collection component includes a storage groove formed on one side of the liquid storage tank. A storage box is movably installed inside the storage groove. A number of screening holes are formed at the bottom of the inner cavity of the storage box. A sealing strip is fixedly installed on the outside of the storage box located outside the liquid storage tank. A tightening bolt is further threadedly connected to the outside of the storage box located outside the liquid storage tank.

[0013] In a possible implementation, an output component for power transmission is provided at the top of the inner cavity of the liquid storage tank, and a humidifying component is provided outside the output component.

[0014] In a possible implementation, the output component includes a gear groove opened outside the assembly ring. A transmission gear is engaged with the surface of the gear groove. A support shaft is fixedly installed in the middle of the transmission gear. The support shaft is fixedly installed with a positioning plate through a bearing. One end of the support shaft is fixedly installed with a cam. The bottom of the cam is in transmission connection with the surface of the humidifying component.

[0015] In a possible implementation, the humidifying component includes a support plate fixed on the inner wall of the liquid storage tank. A reciprocating presser is fixedly installed on the surface of the support plate. A pressing plate whose surface can fit with the surface of the cam is fixedly installed on the top of the presser. A positioning spring is fixedly installed in the inner cavity of the presser. A liquid transmission pipe is fixedly installed on one side of the presser. A water pipe groove is opened on the surface of the liquid storage tank. A water absorption guide pipe is fixedly installed in the inner cavity of the water pipe groove, and one end of the guide pipe is fixedly installed at the bottom of the presser, and the other end of the guide pipe is fixedly installed at the bottom of the inner cavity of the liquid storage tank. Two atomizing nozzles are fixedly installed at the end of the transmission pipe located in the inner cavity of the housing.

[0016] In a possible implementation, a clamping groove is opened on the surface of the housing. A circulation pipe is fixedly installed in the inner cavity of the clamping groove. A number of drain holes for liquid export are opened on the surface of the circulation pipe. A guide plate for guiding the movement of the liquid is also fixedly installed on the surface of the housing.

[0017] In a possible implementation, an impurity-blocking separation frame 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.

[0018] Beneficial effects:

[0019] In this solution, the outside of the housing on the motor is combined with the liquid storage tank through an isolation cover to achieve effective sealing. At the same time, the combined component can also isolate the connection gap between the output shaft of the motor in the closed state and the housing, thereby further improving the sealing effect inside the housing and not interfering with the normal operation of the output shaft.

[0020] The housing inside the motor can blow air from the inside to the outside of the operating motor through the isolation component, thereby achieving dust prevention during the operation of the motor. At the same time, it will also further block the dust inside the housing to avoid impurities such as dust from entering the inside of the housing.

[0021] The cooperation between the output component and the humidifying component can be utilized to accelerate the heat dissipation inside the housing and improve the heat dissipation effect of the motor. Description of the drawings

[0022] The above description is only an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and be able to implement it according to the content of the specification, the following describes in detail with reference to the preferred embodiments of the present invention and the accompanying drawings.

[0023] Figure 1 Schematic diagram of the overall structure of the present invention;

[0024] Figure 2 Schematic diagram of the top structure of the liquid storage tank of the present invention;

[0025] Figure 3 Schematic diagram of the overall sectional structure of the present invention;

[0026] Figure 4 Schematic diagram of the sectional structure of the liquid storage tank and the housing of the present invention;

[0027] Figure 5 For the present invention Figure 4 Enlarged structural diagram of A in;

[0028] Figure 6 Schematic diagram of the back structure of the liquid storage tank of the present invention;

[0029] Figure 7 Schematic diagram of the isolation component structure of the present invention;

[0030] Figure 8 Schematic diagram of the retention component structure of the present invention;

[0031] Figure 9 Schematic diagram of the merging component structure of the present invention;

[0032] Figure 10 Schematic diagram of the sectional structure of the merging component of the present invention;

[0033] Figure 11 Schematic diagram of the side of the closing plate of the present invention;

[0034] Figure 12 Schematic diagram of the water level inside the liquid storage tank of the present invention.

[0035] Legend:

[0036] 1. Housing; 2. Output shaft; 3. Rotor; 4. Stator; 5. First fan; 6. Liquid storage tank; 7. Carrier plate; 8. Sealing ring; 9. Isolation cover; 10. Retention groove;

[0037] 11. Retention component; 1101. Positioning groove; 1102. Retention rod; 1103. Clamping plate; 1104. Return spring;

[0038] 12. Diversion hole; 13. Blocking net; 14. Second fan; 15. Merging groove;

[0039] 16. Merging component; 1601. Guide rod; 1602. Retaining spring; 1603. Sealing plate; 1604. Assembly groove; 1605. Isolation hole; 1606. Inflatable bag;

[0040] 17. Isolation component; 1701. Limit frame; 1702. Assembly ring; 1703. Assembly frame; 1704. Fan blade; 1705. Retaining ring; 1706. Moisture absorption layer; 1707. Dustproof net; 1708. Isolation ring;

[0041] 18. Ventilation hole; 19. Heat conduction hole; 20. Heat dissipation hole;

[0042] 21. Collection component; 2101. Storage groove; 2102. Storage box; 2103. Screening hole; 2104. Sealing strip; 2105. Tightening bolt;

[0043] 22. Output component; 2201. Gear groove; 2202. Driving gear; 2203. Support shaft; 2204. Positioning plate; 2205. Cam;

[0044] 23. Humidifying component; 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;

[0045] 24. Clamping groove; 25. Circulation pipe; 26. Drainage hole; 27. Guide plate; 28. Separation frame. Detailed implementation manner

[0046] The preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention can be implemented in various different forms. Therefore, the present invention is not limited to the embodiments described below. In addition, in order to describe the present invention more clearly, components not connected to the invention will be omitted from the drawings;

[0047] The technical solutions in the embodiments of the present application are to solve the problems in the above-mentioned background technology. The general idea is as follows:

[0048] Refer to the attached description Figures 1 - 12 ; Embodiment 1: Refer to the attached description Figure 4 , this embodiment introduces the specific structure of a sealing device for a dust-proof and explosion-proof motor, including a housing 1. The middle part of the inner cavity of the housing 1 is movably installed with an output shaft 2 through a bearing. A rotor 3 is fixedly installed in the middle of the output shaft 2. A stator 4 is fixedly installed at the bottom of the inner cavity of the housing 1. One end of the output shaft 2 is fixedly installed with a first fan 5. When the motor runs, it will drive the first fan 5 to rotate through the output shaft 2. At this time, the heat inside the housing 1 can be dissipated by the wind generated by the rotation of the first fan 5;

[0049] Refer to the attached instruction manual Figure 1 , a liquid storage tank 6 for filling coolant is fixedly installed at the bottom of the housing 1. The coolant can be a non-conductive coolant. Two baffle plates protrude from the top of the inner cavity of the liquid storage tank 6. A bearing plate 7 is fixedly installed outside 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. Fixing grooves 10 are provided at the front and rear parts of the isolation cover 9. Fixing components 11 that engage with the fixing grooves 10 are provided at the front and rear parts of the bearing plate 7;

[0050] Refer to the attached instruction manual Figure 8 , the fixing component 11 includes a positioning groove 1101 opened on the bearing plate 7. A fixing rod 1102 is fixedly installed inside the positioning groove 1101. One end of the fixing rod 1102 is movably installed with a clamping plate 1103 that can be stuck in the inner cavity of the fixing groove 10. A return spring 1104 is fixedly installed on the surface of the clamping plate 1103 opposite to the positioning groove 1101, and the other end of the return spring 1104 is fixed to the inner wall of the positioning groove 1101;

[0051] Refer to the attached instruction manual Figure 1 , a number of diversion holes 12 are provided on the front and rear surfaces of the isolation cover 9. A barrier net 13 for dust isolation is fixedly installed on the surface of the diversion holes 12. A second fan 14 is fixedly installed at one end of the output shaft 2 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;

[0052] Refer to the attached instruction manual Figure 10 , the merging component 16 includes a guiding rod 1601 fixed to the merging groove 15. A retaining spring 1602 is fixedly installed outside the guiding rod 1601. One end of the guiding rod 1601 is movably installed with a closing plate 1603. An assembling groove 1604 is provided on the side of the closing plate 1603 facing the second fan 14. A number of isolation holes 1605 are provided on the surface of the assembling groove 1604. An air charging bag 1606 is fixedly installed on the outer surface of the closing plate 1603 outside the number of isolation holes 1605;

[0053] Refer to the attached instruction manual Figure 1 、 8, when closing the outside of the housing 1, the isolation cover 9 can be directly placed on the bearing plate 7. At this time, the isolation cover 9 will cooperate with the liquid storage tank 6 to wrap the housing 1 up and down, thus realizing the preliminary closing of the outside of the housing 1, improving the sealing performance inside the housing 1. At the same time, the top of the bearing plate 7 is attached to the outer wall of the isolation cover 9 through a sealing ring 8 made of rubber material, thereby enhancing the sealing effect of the isolation cover 9 on the outside of the housing 1. When the isolation cover 9 needs to be taken out, the bottom of the clamping plate 1103 can be pressed. Subsequently, one end of the clamping plate 1103 will move outward from the inside of the retention groove 10 on the isolation cover 9 with the retention rod 1102 as the center. At this time, the clamping plate 1103 will simultaneously squeeze the return spring 1104 inside the positioning groove 1101. When the connection between the clamping plate 1103 and the retention groove 10 is released, the isolation cover 9 can be directly pulled to separate from the bearing plate 7, and at this time, the convenient separation of the isolation cover 9 is realized. During installation, the inside of the retention groove 10 on the isolation cover 9 can be combined with the top end of the clamping plate 1103;

[0054] Refer to the attached instructions Figure 1 , and since heat dissipation needs to be considered when the motor is running, a plurality of diversion 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, a barrier net 13 is used to block dust and other impurities outside the plurality of diversion holes 12;

[0055] Refer to the attached instructions Figure 9 , the output shaft 2 on the motor needs to extend outside the housing 1 for driving. After passing through the housing 1, the output shaft 2 of the present application also needs to pass through the merging assembly 16. The air bag 1606 is made of elastic rubber material. Therefore, when the air bag 1606 is in an uninflated state, the air bag 1606 is flat. At this time, the outside of the air bag 1606 is attached to the outer wall of the output shaft 2, so that dust and other impurities cannot enter the inside of the housing 1 through the connection gap between the output shaft 2 and the housing 1, thereby improving the sealing performance inside the housing 1 and avoiding dust and other impurities from entering the inside of the housing 1 and contacting the current to cause dust explosion, and thus improving the safety of the motor operation;

[0056] Refer to the attached instructions Figure 10 , when the motor is in operation, the output shaft 2 will drive the second fan 14 to rotate inside the assembly groove 1604 inside the closing plate 1603. At this time, the rotating second fan 14 will drive the air flow to blow towards the air bag 1606. Subsequently, the air bag 1606 will be agitated by the air flow. At this time, the outer wall of the agitated air bag 1606 will not contact the outer wall of the output shaft 2. Therefore, when the output shaft 2 is running, the air bag 1606 will not interfere with the rotation of the output shaft 2, ensuring the stability of the rotation of the output shaft 2;

[0057] Refer to the attached instructions Figure 10, when separating the isolation cover 9 from the carrier 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 guiding rods 1601. At this time, the position limitation of the output shaft 2 by the isolation cover 9 is released, and then the isolation cover 9 can be separated normally.

[0058] Embodiment 2: This embodiment is an improvement based on Embodiment 1:

[0059] Refer to the attached Figure 3 , an isolation component 17 for impurity isolation is provided at one end of the output shaft 2 located in the inner cavity of the housing 1. The inner cavity surface structure of the housing 1 on one side of the isolation component 17 is coated with insulating paint, and the inside of the housing 1 is coated with insulating paint, so that it is not easy for the inside of the housing 1 to conduct electricity;

[0060] Refer to the attached Figure 7 , wherein the isolation component 17 includes a limit frame 1701 fixed in the inner cavity of the housing 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 absorption layer 1706 is fixedly installed on the side of the assembly frame 1703 facing the rotor 3, and a dustproof net 1707 is fixedly installed on the other side of the assembly frame 1703. An isolation ring 1708 is fixed to the inner wall of the housing 1, and the isolation ring 1708 is made of rubber material;

[0061] Refer to the attached Figure 3 、 4 , a ventilation hole 18 is opened at the bottom of the housing 1, a heat conduction hole 19 corresponding to the ventilation hole 18 up and down is opened at the top of the liquid storage tank 6, and a heat dissipation hole 20 is opened at each of the two protruding positions at 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. A collection component 21 for impurities is further provided in the inner cavity of the liquid storage tank 6;

[0062] Refer to the attached Figure 3 、 4 , wherein the collection component 21 includes a storage groove 2101 opened on one side of the liquid storage tank 6. A storage box 2102 is movably installed in the inner cavity of the storage groove 2101. A plurality of screening holes 2103 are opened at the bottom of the inner cavity of the storage box 2102. A sealing strip 2104 is fixedly installed outside the storage box 2102 on the liquid storage tank 6. The sealing strip 2104 can improve the sealing performance of the connection between the storage box 2102 and the liquid storage tank 6. A tightening bolt 2105 is also threadedly connected outside the storage box 2102 on the liquid storage tank 6;

[0063] Refer to the attachedFigure 7 When the output shaft 2 rotates, it can drive the retaining ring 1705 to rotate. When the retaining ring 1705 rotates, it will drive the assembly frame 1703 to rotate inside the limit frame 1701 in cooperation with the assembly ring 1702 through the fan blades 1704. When the assembly frame 1703 rotates, the gap between the outer wall of the assembly frame 1703 and the inner wall of the housing 1 is isolated from dust and other impurities through the isolation ring 1708. At the same time, the rotating fan blades 1704 will accelerate the air flow and blow again towards the connection between the output shaft 2 and the outside of the housing 1. At this time, the air flow generated by the rotating fan blades 1704 is used to achieve the function of gas barrier at the connection between the housing 1 and the outside of the output shaft 2, thereby effectively preventing dust and other impurities from entering the inside of the housing 1, and further enhancing the dust-proof effect inside the housing 1. When the retaining ring 1705 rotates, it will also further block dust and other impurities through the dust-proof net 1707 and the moisture-absorbing layer 1706, thereby avoiding the contact between dust and other impurities and the electric arc generated by the operation of the output shaft 2 and the rotor 3 and causing an explosion;

[0064] Refer to the attached instruction manual Figure 3 , 4 The liquid storage tank 6 is filled with non-conductive cooling liquid. Since the housing 1 and the liquid storage tank 6 are connected through the ventilation holes 18 and the heat conduction holes 19 up and down, when heat is generated inside the housing 1, the heat flow will contact the cooling liquid inside the liquid storage tank 6, thereby achieving the preliminary cooling of the inside of the housing 1. And the air flow generated by the rotation of the fan blades 1704 will also accelerate the air flow velocity inside the housing 1, thereby better contacting the cooling liquid for cooling. At the same time, when dust and other impurities fall into the liquid storage tank 6, the fallen dust and other impurities will enter the storage box 2102 inside the collection assembly 21. The storage box 2102 will perform solid-liquid separation work through the screening holes 2103. When there are too many impurities inside the storage box 2102, the tightening bolt 2105 can be manually rotated, so that the tightening bolt 2105 is separated 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;

[0065] Refer to the attached instruction manual Figure 12 Since two baffle plates protrude from the top of the inner cavity of the liquid storage tank 6, when the water level in the liquid storage tank 6 is balanced, the liquid storage tank 6 can isolate the inside of the housing 1 through the liquid, and the liquid inside the liquid storage tank 6 can contact the external gas through the heat dissipation holes 20 to achieve the function of liquid cooling, further improving the heat dissipation effect inside the housing 1.

[0066] Embodiment 3: This embodiment is an improvement based on Embodiments 1 and 2:

[0067] Refer to the attached instruction manual Figure 4, an output component 22 for power transmission is provided at the top of the inner cavity of the liquid storage tank 6, and a humidifying component 23 is provided outside the output component 22;

[0068] Refer to the attached instruction manual Figure 5 , the output component 22 includes a gear groove 2201 opened 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, the support shaft 2203 is fixedly installed with a positioning plate 2204 through a bearing, one end of the support shaft 2203 is fixedly installed with a cam 2205, and the bottom of the cam 2205 is in transmission connection with the surface of the humidifying component 23;

[0069] Refer to the attached instruction manual Figure 5 , the humidifying 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 attached to 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, a water pipe groove 2306 is opened on the surface of the liquid storage tank 6, a water absorption guide pipe 2307 is fixedly installed in the inner cavity of the water pipe groove 2306, and one end of the guide pipe 2307 is fixedly installed at the bottom of the presser 2302, wherein the other end of the guide 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 housing 1, and the water absorption end of the guide pipe 2307 is arranged at the bottom of the collection component 21;

[0070] Refer to the attached instruction manual Figure 5, when the output shaft 2 drives the isolation component 17 to rotate, the fan blades 1704 on the isolation component 17 drive the transmission gear 2202 to rotate through the gear slot 2201. At this time, the rotating transmission gear 2202 drives the support shaft 2203 to rotate. At this time, the rotating support shaft 2203 drives the cam 2205 to rotate synchronously. In this way, the rotating cam 2205 continuously presses the pressing plate 2303 on the humidifying component 23, and then presses the presser 2302 through the pressing plate 2303. At this time, the pressed presser 2302 pumps the coolant through the water guide pipe 2307 to the transmission pipe 2305, and then the transmission pipe 2305 uses the atomizing nozzle 2308 to atomize and spray the liquid inside the housing 1. The sprayed atomized liquid can absorb heat better inside the housing 1, and the dust-proof net 1707 on the isolation component 17 cooperates with the moisture-absorbing layer 1706 to block the atomized liquid. The moisture-absorbing layer 1706 can be made of cotton material. In this way, when the output shaft 2 drives the first fan 5 to rotate, the first fan 5 drives the hot air flow to contact the surface of the moist moisture-absorbing layer 1706. At this time, the heat energy contacts the liquid on the surface of the moisture-absorbing layer 1706, so that the moisture-absorbing layer 1706 quickly absorbs the heat energy, further improving the heat dissipation effect inside the housing 1.

[0071] Embodiment 4: This embodiment is an improvement based on Embodiments 1, 2, and 3:

[0072] Refer to the attached Figure 2 , a clamping groove 24 is formed on the surface of the housing 1, a circulation pipe 25 is fixedly installed in the inner cavity of the clamping groove 24, and a plurality of drain holes 26 for liquid discharge are formed on the surface of the circulation pipe 25. A guide plate 27 for guiding the movement of the liquid is also fixedly installed on the surface of the housing 1;

[0073] Refer to the attached Figure 2 , a separation frame 28 for impurity blocking 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;

[0074] Refer to the attached Figure 2, when the humidifying component 23 is operating, the coolant can be transported through the circulation pipe 25. Since the circulation pipe 25 is arranged in a surrounding manner inside the clamping groove 24 on the housing 1, the coolant inside the transmission circulation pipe 25 can absorb heat from the outer wall of the housing 1 at this time, thereby improving the heat dissipation effect on the surface of the housing 1. At the same time, the circulation pipe 25 can also spray the liquid on the surface of the housing 1 through the drain hole 26. At this time, the coolant can directly absorb heat from the surface of the housing 1, further improving the external heat dissipation effect of the housing 1. The discharged liquid is introduced into the separation frame 28 through the guide plate 27, and the separation frame 28 separates the solid and liquid of the coolant. 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 and absorbing heat.

[0075] Working principle: Step 1: The outside of the housing 1 is sealed by the wrapping of the isolation cover 9 and the liquid storage tank 6. The use of the combined component 16 enables the gap between the housing 1 and the output shaft 2 to be isolated, ensuring the effective seal outside the housing 1 and having a good dust-proof effect.

[0076] Step 2: The use of the isolation component 17 achieves the effect of wind resistance, thereby preventing dust from the outside of the motor in the operating state and simultaneously cooling the inside of the housing 1.

[0077] Step 3: The cooperation between the output component 22 and the humidifying component 23 can better cool and absorb heat inside the housing 1.

[0078] Step 4: The circulation pipe 25 cooperating with the drain hole 26 can dissipate heat from the motor more effectively and can also realize liquid circulation and liquid cooling.

[0079] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly illustrating the present invention and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A sealing device for a dust-proof and explosion-proof motor, characterized in that, It includes a housing (1). An output shaft (2) is movably installed in the middle of the inner cavity of the housing (1) through a bearing. A rotor (3) is fixedly installed in the middle of the output shaft (2). A stator (4) is fixedly installed at the bottom of the inner cavity of the housing (1). A first fan (5) is fixedly installed at one end of the output shaft (2). A liquid storage tank (6) for filling coolant is fixedly installed at the bottom of the housing (1). There are two baffle plates protruding from the top of the inner cavity of the liquid storage tank (6). A bearing plate (7) is fixedly installed outside 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 inside 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 engages with the retaining groove (10) is provided at the front and rear parts of the bearing plate (7). A number of flow guiding holes (12) are opened on the front and rear surfaces of the isolation cover (9). A barrier net (13) for dust isolation is fixedly installed on the surface of the flow guiding holes (12). A second fan (14) is fixedly installed at one end of the output shaft (2) outside the housing (1). A merging groove (15) is opened on one side of the isolation cover (9). Two merging components (16) are arranged inside the merging groove (15). The second fan (14) is arranged in the inner cavity between the two merging components (16). The retaining component (11) includes a positioning groove (1101) opened on the bearing plate (7). A retaining rod (1102) is fixedly installed inside the positioning groove (1101). A clamping plate (1103) that can be stuck inside the retaining groove (10) is movably installed at one end of the retaining rod (1102). A return spring (1104) is fixedly installed on the surface of the clamping plate (1103) opposite to the positioning groove (1101). The other end of the return spring (1104) is fixed to the inner wall of the positioning groove (1101). The merging component (16) includes a guiding rod (1601) fixed in the merging groove (15). A retaining spring (1602) is fixedly installed outside the guiding rod (1601). A closing plate (1603) is movably installed at one end of the guiding rod (1601). An assembling groove (1604) is opened on the side of the closing plate (1603) facing the second fan (14). A number of isolation holes (1605) are opened on the surface of the assembling groove (1604). An air filling bag (1606) is fixedly installed on the outer surface of the closing plate (1603) outside the number of isolation holes (1605). An isolation component (17) for impurity isolation is arranged at one end of the output shaft (2) inside the housing (1). The surface structure of the inner cavity of the housing (1) on one side of the isolation component (17) is coated with insulating paint. The isolation component (17) includes a limiting frame (1701) fixed in the inner cavity of the housing (1). An assembling ring (1702) is movably installed inside the limiting frame (1701).An assembly frame (1703) is fixedly installed inside the assembly ring (1702). A number of groups of fan blades (1704) are fixedly installed in the middle of the inner cavity of the assembly frame (1703). One end of each group of the fan blades (1704) is fixedly installed with a retaining ring (1705), and the inner cavity of the retaining ring (1705) is fixed to one end of the output shaft (2). A moisture absorption layer (1706) is fixedly installed on the side of the assembly frame (1703) facing the rotor (3). A dust-proof net (1707) is fixedly installed on the other side of the assembly frame (1703). An isolation ring (1708) is fixed to the inner wall of the housing (1). An air vent hole (18) is opened at the bottom of the housing (1). A heat conduction hole (19) corresponding to the air vent hole (18) up and down is opened at the top of the liquid storage tank (6). A heat dissipation hole (20) is opened at each of the two protruding positions at the top of the liquid storage tank (6). A collection assembly (21) for impurities is further provided in the inner cavity of the liquid storage tank (6). The collection assembly (21) includes a storage groove (2101) opened on one side of the liquid storage tank (6). A storage box (2102) is movably installed in the inner cavity of the storage groove (2101). A number of screening holes (2103) are opened at the bottom of the inner cavity of the storage box (2102). A sealing strip (2104) is fixedly installed on the outside of the storage box (2102) located outside the liquid storage tank (6). A tightening bolt (2105) is also threadedly connected to the outside of the storage box (2102) located outside the liquid storage tank (6). An output assembly (22) for power transmission is provided at the top of the inner cavity of the liquid storage tank (6). A humidifying assembly (23) is arranged outside the output assembly (22). The output assembly (22) includes a gear groove (2201) opened on the outside of the assembly ring (1702). A transmission gear (2202) is engaged on the surface of the gear groove (2201). A support shaft (2203) is fixedly installed in the middle of the transmission gear (2202). The support shaft (2203) is fixedly installed with a positioning plate (2204) through a bearing. One end of the support shaft (2203) is fixedly installed with a cam (2205). The bottom of the cam (2205) is in transmission connection with the surface of the humidifying assembly (23). The humidifying assembly (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 attached to the surface of the cam (2205) is fixedly installed at 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). A water pipe groove (2306) is opened on the surface of the liquid storage tank (6). A water absorption guide pipe (2307) is fixedly installed in the inner cavity of the water pipe groove (2306), and one end of the guide pipe (2307) is fixedly installed at the bottom of the presser (2302).One end of the water guide pipe (2307) is fixedly installed at the bottom of the inner cavity of the liquid storage tank (6). Two atomizing nozzles (2308) are fixedly installed at one end of the transmission pipe (2305) located in the inner cavity of the housing (1). A clamping groove (24) is formed on the surface of the housing (1). A circulation pipe (25) is fixedly installed in the inner cavity of the clamping groove (24). A number of drain holes (26) for liquid drainage are formed on the surface of the circulation pipe (25). A guide plate (27) for guiding the movement of the liquid is also fixedly installed on the surface of the housing (1). A separation frame (28) for impurity blocking 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).

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