125results about How to "Improve dustproof effect" patented technology

The utility model discloses a pulse laser device in industrial CR, comprising a conveyer belt, the top of the conveyer belt is provided with a support frame used for detection, the support frame is internally provided with an adjusting mechanism used for movement, and the adjusting mechanism is internally provided with a detection mechanism; by means of the arrangement of the detection mechanism, when the laser detector detects an electronic component, an air pump can work to inflate the interior of the first shell, and when gas enters the interior of the first shell, the gas is injected into the interior of the second shell by means of communication of a rotary connecting piece and the second shell, so that the detection efficiency is improved. The laser detector is arranged in the dustproof part, air is blown to the detection lens of the laser detector through the first spray head, the second servo motor works to drive the gear to rotate while the first spray head blows air, the second shell is driven to rotate through meshing connection of the gear and the gear ring, and the dustproof effect of the dustproof part is further improved.

The utility model discloses a dustproof wind speed sensor belongs to wind speed measurement technical field. Including the wind cup, the rotating shaft, the base and set up between the wind cup and the base's labyrinth seal component, the labyrinth seal component is by with the wind cup synchronous rotation's labyrinth ring and with the fixed base's labyrinth seat constitutes, and the zigzag labyrinth passage with multiple gyration parts is formed between two, when the airflow carries the dust and attempts to invade, the labyrinth passage passes through the extension invasion path and multiple change airflow direction, effectively consumes the airflow kinetic energy, promotes the dust particle settlement to block its into the bearing area on the basis of keeping traditional wind speed sensor appearance, through the innovative labyrinth seal structure has promoted the dustproof capacity significantly, especially suitable for desert, construction site and so on dust environment, effectively solved the bearing easy to jam, the sensor short life technical problem.

The utility model relates to electric hoist technical field discloses a dustproof electric hoist, including the body, the body is limited to have the accommodating cavity, the accommodating cavity is connected to have the winding wheel in the conversion, is wound with the steel wire rope on the winding wheel, is equipped with the open mouth in the front side of accommodating cavity, and the open mouth top is provided with the fire stopper, still includes: the paddle, the sliding connection is in the accommodating cavity bottom, and is configured to can contact with the fire stopper, the central opening of paddle has the through groove, and the leading -out end of steel wire rope penetrates through the through groove, the cleaning brush, the one side of opening is close to the movable joint in the paddle top surface, is provided with the drive assembly on the paddle, and the drive end of drive assembly is linked with the cleaning brush, so that the cleaning brush is contacted with steel wire rope above the through groove, the fan, sets up in the accommodating cavity inner wall surface opposite one side of opening, and the air outlet end of fan is along the horizontal direction to the opening. Can realize the dustproof effect of improving electric hoist.

The invention relates to the field of disc type motors, in particular to a disc type direct drive motor. Comprising two sets of symmetrically arranged motor housings, and rotating shafts are arranged in the two sets of motor housings; rotor mechanisms are arranged in the two sets of motor housings. And the rotor mechanism is sleeved on the outer wall of the rotating shaft. External air is sucked in at a high speed through the multiple sets of air guide blades distributed in the air guide groove in the annular array mode, and then airflow is guided into the position between the outer wall of the separation ring and the inner wall of the shell at a high speed through the multiple sets of fourth air inlet through grooves in the two sides; high-speed airflow is guided into a specific channel in the stator mechanism through a plurality of groups of air guide through grooves I for efficient heat dissipation, and then the airflow is exhausted through a plurality of groups of exhaust holes I, so that the heat dissipation effect of the stator mechanism during working is improved; and the linear speed of the edge of the rotor is utilized, and meanwhile, a heat dissipation mechanism which consumes extra power is prevented from being added, so that the heat loss of the disc type direct drive motor is reduced, and meanwhile, the energy-saving effect is achieved.

The utility model discloses a VOCs organic waste gas treatment device which comprises a carbon box, clamping seats are fixedly connected to the two sides of the inner side face of the carbon box, activated carbon adsorption plates are clamped in the clamping seats, and a conveying pipe is fixedly connected to the bottom of the inner side face of the carbon box. According to the VOCs organic waste gas treatment device, an activated carbon adsorption plate, a fresh air heat exchanger, a fan and a combustion furnace are arranged, the activated carbon adsorption plate adsorbs organic components in waste gas into micropores of activated carbon for concentration, filtered clean gas reaches the standard and is discharged, and fresh air is heated to a preset value through the fresh air heat exchanger and then enters a carbon box through a second air inlet pipe; organic waste gas subjected to desorption treatment is purged, meanwhile, VOCs organic waste gas is conveyed into a combustion furnace through a gas collecting pipe and a gas collecting hood through a draught fan, the VOCs organic waste gas is decomposed into carbon dioxide and water vapor after being subjected to catalytic combustion, and finally the VOCs organic waste gas is conveyed to a fresh air heat exchanger through a connecting pipe to be discharged after being subjected to heat exchange and cooling and reaching the standard, so that an activated carbon adsorption plate can be recycled; and the use cost is reduced.

The utility model provides a laser and a laser device, the laser comprises a housing, a laser module and an air tap module, and an accommodating cavity is formed in the housing; at least part of the laser module is arranged in the accommodating cavity, and the laser module is provided with a light outlet; the air nozzle module is arranged on the lower side of the laser module and is provided with an air guide channel, a flow guide cavity and an outlet, the flow guide cavity is communicated with the air guide channel, the air guide channel can guide airflow output by an air source to the flow guide cavity, the airflow is blown out from the outlet after passing through the flow guide cavity, and the air nozzle module is arranged on the lower side of the laser module. A light outlet of the laser module is located in the flow guide cavity, and the outlet coincides with the center line of the light outlet. According to the technical scheme, the influence of dust and other impurities on the laser machining process can be effectively reduced, and interference of the air pipe on the laser device is reduced.

The application protects a rotating mirror laser radar, which comprises a receiving lens in the shape of a hollow truncated cone, a transmitting device arranged in the hollow cavity of the receiving lens, so that the transmitting device and the receiving device are coaxially arranged to form a transmitting-receiving assembly; a rotating mirror seat is arranged between the radar cover and the transmitting-receiving assembly; a light shield cover is installed on the radar base; a ring-shaped grid is arranged on the periphery of the light shield cover, and a bearing is installed on the outer side of the ring-shaped grid in a sleeved manner; a transmitting lens is installed in a limiting groove on the upper end surface of the transmitting bearing assembly, and a transmitting light source circuit board is installed in a transmitting light source circuit board installation groove; the positioning column of the receiving lens is matched with the receiving limiting groove of the radar base, so that the receiving lens is installed on the radar base; the covering of the radar cover and the dust cover optimizes the dustproof effect of the whole machine, the receiving lens is shielded from external stray light by the light shield cover, and the environmental robustness is overcome; the high-precision integrated assembly of the transmitting device and the receiving device is realized through the slot structure such as the limiting groove and the installation groove, and the stable application feasibility of the rotating mirror laser radar in complex environments is optimized.

The utility model discloses an open-close type waterproof current transformer, and relates to the technical field of mutual inductors, the open-close type waterproof current transformer comprises a first mutual inductance unit and a second mutual inductance unit, the first mutual inductance unit comprises a first shell, a first bottom cover and a first magnetic core, the first magnetic core is arranged in a first cavity formed by combining the first shell and the first bottom cover and is filled and sealed through an epoxy resin layer, and sealing strips are arranged on the end faces of the first shell and the first bottom cover; the second mutual inductance unit comprises a second shell, a second bottom cover and a second magnetic core, and the second magnetic core is arranged in a second cavity formed by combining the second shell and the second bottom cover and is filled and sealed through an epoxy resin layer; the two end faces of the first mutual inductance unit and the second mutual inductance unit are oppositely combined to form a closed-loop structure. The mutual inductance unit I and the mutual inductance unit II are closed in an involution manner and are matched with the sealing strip and the epoxy resin layer, so that the sealing performance is good, and a multi-protection structure ensures that the mutual inductor is good in sealing, waterproof and dustproof capability in the use process.

The utility model discloses a kind of inner cone plug-in cable connectors, it is related to the technical field of power cable connector.The utility model inner cone plug-in cable connector includes seat body, cable plug-in body and compression device;The seat body includes flange seat and connecting column body connected with each other, the inside of the connecting column body is equipped with fixed contact;The cable plug-in body includes insulating handle and power connection component, the insulating handle is sleeved in the outside of the power connection component, the bottom of the power connection component is connected with the fixed contact, the insulating handle is equipped with handle flange, the bottom of the handle flange is abutted with the top of the flange seat;The compression device includes cover and connecting piece, the top of the cover and handle flange is abutted, the connecting piece is sequentially through the cover and flange seat, to fix the insulating handle on the flange seat.The utility model inner cone plug-in cable connector is convenient to use, low in cost and high in safety.

The utility model relates to the technical field of cable installation and laying. The transformer high-low voltage integrated cable box device comprises a main body structure, the main body structure comprises a base, a cabinet body structure, ventilation openings and sealing washers, and the number of the ventilation openings is two; and the protection structure comprises a hinge and a sealing ring, and one end of the hinge is fixedly connected with the outer surface of one side of the cabinet body structure. According to the utility model, through the attachment of the sealing ring and the sealing washer, a gap generated when the cabinet body structure is attached to the protective door can be filled as much as possible, so that the waterproof sealing capability of the protective structure can be improved to a certain extent, external air can enter the waterproof box only through the air inlet, and the opening of the air inlet is vertically downward; therefore, rainwater can be prevented from flowing into the air inlet, and the design can effectively prevent the rainwater from entering the cabinet body structure.

The utility model relates to the technical field of spliced screen units, in particular to a spliced screen unit with dustproof sealing design, which comprises a screen main body, a sealing assembly and a mounting frame. The sealing assembly achieves efficient dustproof sealing through the flexible sealing strip, the elastic pressing piece and the flow guide groove, the flexible sealing strip is tightly attached to the edge of the screen body, the flow guide groove guides dust to be discharged, and the heat dissipation module enhances the dustproof effect through airflow. The mounting frame is provided with an adjusting structure and a shock pad, so that the adaptability and the stability are improved. Dust invasion can be effectively prevented, the service life of the equipment is prolonged, the display effect is improved, maintenance is convenient, and complex scene requirements are met.

The utility model discloses a kind of heating type vibration push flat plate convenient to asphalt paving, it is related to asphalt paving field, the utility model includes push flat plate, the top of push flat plate is equipped with electric heater, the top of electric heater is fixed with fixed frame, and the top of fixed frame is equipped with control box, and the outer surface and one side of control box are all equipped with threading hole, and the inner wall of threading hole is equipped with mounting groove, and the inside of mounting groove is equipped with sealed air bag ring.The utility model is provided with mounting groove, sealed air bag ring, inflating one-way valve and exhaust valve, when cable passes through threading hole, staff can inflate sealed air bag ring by inflating one-way valve, at this time, sealed air bag ring expands inwards, to be closely combined with the outer wall of cable, to eliminate the gap between cable and threading hole, and improve the sealing of control box, prevent external dust from entering into control box inside through the gap between cable and threading hole, to improve the dustproof effect of control box.

The utility model discloses a dustproof servo motor shell structure, and particularly relates to the technical field of servo motor shells, the dustproof servo motor shell structure comprises a heat dissipation dustproof shell, a sleeve frame and a sliding column, the sleeve frame is fixed on the outer wall of the heat dissipation dustproof shell, the sliding column is located on the inner wall of the sleeve frame in a sliding mode, and one end portion of the sliding column is provided with an end portion adjusting dustproof assembly; the end adjusting dustproof assembly comprises a sleeving block fixedly arranged at one end of the sliding column, one end of the sleeving block is fixedly connected with an outer ring cover, one end of the outer ring cover is fixedly connected with a side ring cover, and a positioning ring is fixedly installed on the inner wall of the side ring cover. The inner wall of the outer ring cover is slidably connected with an inner ring cover. The end adjusting dustproof assembly is adopted, the sleeving block drives the outer ring cover to move leftwards, the positioning ring moves leftwards along the outer wall of the output end of the servo motor, the outer ring cover and the inner ring cover can adjust the area of the area to achieve dustproof operation on the exterior of the end of the sleeve frame, and the dustproof effect of the servo motor is better.

The utility model discloses a loudspeaker with high -efficient dustproof structure, including loudspeaker body, the upper end of loudspeaker body is equipped with the basin frame, the upper end of basin frame is equipped with dustproof tone cover, the upper end of loudspeaker body is away from the circle center and is equipped with two rectangular insertion slot of symmetrical distribution. The utility model discloses through with the basin frame butt joint of circular cover, make rectangular insert piece insert in rectangular insertion slot, the spring in circular groove drives cylindrical clamping block and sets up through circular through -slot and circular hole, effectively with circular cover sleeve joint fixed on the basin frame, make dustproof tone cover and circular dustproof net's double -deck filter dust, improve the dustproof effect of loudspeaker body, through with the circular dustproof net insert in the circular groove on the circular cover, make the first annular magnetic sheet on circular dustproof net and the second annular magnetic sheet suction in circular groove fixed, effectively with circular dustproof net positioning in circular groove, the convenient replacement circular dustproof net and circular cover clean, simple structure and practical.

The utility model discloses a voice lift calling device and voice lift calling system relates to elevator control technical field. The utility model discloses voice lift calling device includes the body panel, the body bottom box and the voice transceiver, the body panel is equipped with the sound collection area, the sound collection area is equipped with a plurality of sound collection channels, the sound collection channel is by the outer wall of body panel and inclines to the inner wall of body panel, is equipped with the sound collection cavity between the sound collection area and the voice transceiver, and the both ends of sound collection cavity are sound collection and the sound collection mouth respectively, the sound collection mouth is greater than the sound collection mouth, and the sound collection mouth is connected with the sound collection area, and the sound collection mouth is connected with the voice transceiver, and the waterproof breathable membrane is equipped between the sound collection mouth and the voice transceiver, the voice transceiver is equipped with offline speech recognition module, and the offline speech recognition module is built -in lift command word library. Adopt the utility model, and the sound collection performance is good, and the dustproof is good.

The utility model relates to the technical field of hydraulic oil cylinders, and discloses an environment-friendly hydraulic oil cylinder with a sealing structure, which comprises a cylinder barrel, oil holes are arranged on two sides of the cylinder barrel, a protective sleeve is sleeved on the surface of the cylinder barrel, and an oil pipe mounting component connected with an oil pipe is arranged on the surface of the protective sleeve. A supporting ring is fixedly arranged at one end of the protective sleeve and fixedly connected with one end of a cylinder barrel through a screw, the cylinder barrel is slidably connected with a piston rod, and the surface of the piston rod is sleeved with a corrugated hose. The protection sleeve can be fixed through the supporting ring, the protection sleeve can protect the surface of the cylinder barrel, the cylinder barrel can be prevented from being exposed outside, the anti-corrosion capacity of the cylinder barrel is improved, the two ends of the corrugated hose can be supported through the supporting assembly and the supporting ring, the stability of the corrugated hose can be kept, and the corrugated hose can protect the surface of the piston rod. When there is much dust, the piston rod can be prevented from contacting the dust.

This invention belongs to the field of dust suppression equipment, specifically an intelligent construction engineering dust suppression device, including a guide tube. A high-pressure fan is fixedly connected inside the guide tube. The guide tube is rotatably connected to the top of a device base. A connecting hose is inserted into the top of the device base, and the top of the connecting hose is fixedly connected to an annular tube. Multiple nozzles are fixedly connected to the front end of the annular tube, and atomizing nozzles are fitted onto the nozzles. A slot is opened at the front end of the guide tube. A storage mechanism is provided inside the guide tube for extending and retracting the annular tube inside the guide tube. Through the structural design of the storage mechanism, the function of easily storing the annular tube and atomizing nozzles together inside the guide tube when the guide tube stops working is realized, thereby reducing the adhesion of dust to the atomizing nozzles when the guide tube is stored.

The dustproof milling cutter comprises a cutter bar and a cutter handle located in the middle of the top face of the cutter bar, the cutter handle is fixedly connected to the middle of the top face of the cutter bar, dustproof openings which are annularly distributed at equal intervals are formed in the bottom face of the cutter bar, conveying chambers are communicated with the interiors of the dustproof openings, and the ends, away from the dustproof openings, of the conveying chambers are communicated to the middle of the outer wall of the cutter bar; a clamping groove is formed in the outer wall of the cutter bar and located on the outer side of the conveying chamber, a clamping plate is slidably connected into the clamping groove in a clamping mode, a dust collecting box is arranged at the bottom of the clamping plate and located on the outer side of the conveying chamber, and a filter screen is arranged in the dust collecting box and slides on the inner wall of the dust collecting box. According to the milling cutter dust removal device, through the arrangement of a dustproof opening, a conveying chamber, a clamping groove, a clamping plate, a dust collection box, a filter screen, a stabilizing plate, a limiting opening and a limiting block, dust on the outer side and the bottom face of a milling cutter can be adsorbed into the milling cutter when the milling cutter dust removal device is used, and the precision and quality of a workpiece in the machining process of the milling cutter are improved; and the air permeability in the structure is better.

The utility model discloses a portable hair dryer, including hair dryer main part, the hair dryer main part left and right both ends wall all are provided with positive pole magnetic attraction groove, the hair dryer main part left and right both ends are connected with dustproof structure and hair curling structure respectively, the fixed frame is fixedly installed with negative pole magnetic attraction fixed ring, the negative pole magnetic attraction fixed ring left and right both ends respectively adsorbed with first metal dustproof board and second metal dustproof board, the negative pole magnetic attraction fixed ring left and right both ends all are provided with auxiliary groove, first metal dustproof board and second metal dustproof board inboard all are fixedly connected with metal auxiliary ring, the fixed frame right side fixedly connected with first negative pole magnetic attraction connecting ring. The portable hair dryer, through dustproof structure, the dustproof effect of hair dryer air inlet is improved conveniently, and dustproof board is convenient to detach, thereby being convenient to the overall cleaning of dustproof board, through hair curling structure, it is convenient to carry out hair curling operation, thereby improving its functionality.

A motor with a brake contributes to reducing the size of a cover covering a wire lead-out portion, reducing material cost, and improving waterproof performance and dustproof performance. The motor with the brake comprises a motor shell, a brake shell, a power source wire and a brake wire, the motor shell and the brake shell are assembled in the axial direction, and the power source wire is electrically connected with the brake wire. The power source electric wire penetrates through the motor shell in the radial direction and then is bent towards the brake shell side, and the power source electric wire extends to the axial end face of the brake shell towards the side opposite to the motor shell in the brake shell. The brake wire extends in the brake housing toward a side opposite to the motor housing, and is electrically connected to the power source wire at the axial end face to form an electrical connection portion.

The utility model discloses a dustproof plastic uptake box, which relates to the technical field of plastic uptake boxes and comprises a plastic uptake box body and a box cover, a filling groove is arranged on the inner side of the plastic uptake box body, an inflatable cushion is integrally connected outside the box cover, the inflatable cushion fills the filling groove after being inflated, a first rubber sleeve is adhered to the outer side of the plastic uptake box body through a hook-and-loop fastener, and a second rubber sleeve is adhered to the inner side of the plastic uptake box body. A second rubber sleeve is adhered to a hook-and-loop fastener at the bottom of the plastic uptake box body, and after air is injected into the inflatable cushion, the upper opening of the plastic uptake box body is completely closed through the inflatable cushion and the box cover, air is injected into the inflatable cushion, so that the inflated inflatable cushion fills the filling groove in the inner side of the plastic uptake box body, and the upper opening of the plastic uptake box body can be completely closed by being matched with the box cover in use. And meanwhile, the rubber sleeves are arranged on the outer side and the bottom of the blister box body, the rubber sleeves can protect the surface of the blister box body, and the situation that external air enters the blister box body due to abrasion of the surface of the blister box body is effectively avoided.

The application provides an elevator car sill with a composite dustproof structure and a mounting method, and belongs to the technical field of elevator car sills; the elevator car sill comprises a multifunctional cleaning module and an accessory, and the multifunctional cleaning module is fixedly connected with the accessory on the side surface. The multifunctional cleaning module can clean dust and dirt in the sill and lubricate the sill, thereby reducing the friction between the moving wheels of the car door and the sill, which not only enriches the functionality of the device to a certain extent, but also improves the competitiveness of the device in the market to a certain extent. The baffle module can be popped out when the car door is opened and be pressed and closed by the car door when the car door is closed, so that the module neither blocks the normal opening and closing of the car door, nor blocks small stones from entering the track when the car door is opened, which improves the dustproof effect of the device to a certain extent.

The utility model discloses an animal tissue slice dyeing machine, including base, the top fixed connection of base has lower casing, just the outside of top of lower casing is equipped with upper casing, the outer wall of upper casing is fixed with the backplate of joint, the utility model discloses when using, through starting the cylinder and pulling the backplate vertically downward movement under the vertical rod's limit, to set up the upper casing on the outside of top of lower casing, and then can carry out dustproof protection to dyeing process, in addition, can utilize drive motor and drive net barrel rotation, to can net barrel rotation to the through slot, and then convenient to take out animal tissue slice from net barrel, reduce the contact area between this dyeing machine inside and outside, to further improve dustproof effect, in addition, through the setting of four net barrels and dyeing cylinder, can simultaneously dye the animal tissue slice of different kinds, also can dye the tissue slice of same kind with different color, make the whole dyeing machine function diversification, and the practicality is stronger.

The utility model belongs to the technical field of automobile shock absorber, specifically relates to a linear motor shock absorber, which comprises an electromagnetic coil, a permanent magnet, a core shaft and a sleeve outside the electromagnetic coil, one of the electromagnetic coil and the permanent magnet is connected on the outer side wall of the core shaft, and the other is arranged on the inner side wall of the sleeve, further comprises a displacement sensor, the upper end of the sleeve is equipped with a guide sleeve, the lower end of the sleeve is equipped with a lower limit plate, the core shaft is located inside the guide sleeve and protrudes upwards, a first sliding bearing and a sealing ring located on the top surface of the first sliding bearing are arranged between the core shaft and the guide sleeve, the first sliding bearing and the sealing ring are fixedly arranged on the inner side wall of the guide sleeve, and the first sliding bearing and the sealing ring are in sealed contact with the outer side wall of the core shaft and axially slide. The electromagnetic coil and the permanent magnet are always located in the sleeve, the sealing ring and the core shaft are matched to seal the through hole on the guide sleeve, impurities are prevented from entering the sleeve to damage the electromagnetic coil and the permanent magnet, and the working reliability of the linear motor shock absorber is improved.

The invention relates to the technical field of coal mining, in particular to a coal mine mining filling tunneling device. The coal mine mining filling and tunneling device comprises a machine body, a tunneling mechanism, a collecting mechanism and a conveying and dehumidifying mechanism, the tunneling mechanism comprises a drill bit, a first driving assembly and a cooling and dust falling assembly, and the cooling and dust falling assembly communicates with the drill bit and is used for cooling the drill bit and spraying and falling dust to an excavation area. The conveying dehumidification mechanism comprises a conveying assembly and an air outlet assembly, drainage holes are formed in the surface of the conveying assembly, the air outlet assembly is arranged corresponding to the conveying direction of the conveying assembly and used for blowing air to dehumidify the coal mine on the conveying assembly, and the drainage holes are used for discharging water removed from the coal mine. Drainage holes are formed in the surface of the conveying assembly and matched with the air outlet assembly arranged in the conveying direction, the effects of blowing and dehumidifying wet coal and rapidly discharging moisture are achieved, the wet coal is effectively prevented from adhering to the surface of the conveying assembly to cause accumulation and blockage, the coal mine transfer efficiency is improved, and the continuity of the whole mining progress is guaranteed.

The utility model discloses a gear pump heat dissipation device in the technical field of gear pumps, which comprises a box body and a dust removal water tank, the dust removal water tank is fixedly connected to the upper side of the left side wall of the box body, frames are embedded in the lower sides of the left side wall and the right side wall of the box body, and the left side wall and the right side wall of an inner cavity of each frame are fixedly connected with heat dissipation fans. A dustproof net is fixedly connected between the inner side walls of the frame, an air expanding nozzle is fixedly connected to the top of an inner cavity of the box body, a small air conditioner is fixedly connected to the left side of the top of the box body and communicates with the air expanding nozzle through a pipeline, and a pump body is fixedly connected to the bottom of the inner cavity of the box body. The heat dissipation device for the gear pump is reasonable in structural design, auxiliary heat dissipation can be carried out on the gear pump, the heat dissipation efficiency of the gear pump is improved, dust in air can be prevented from settling on the gear pump, and the dustproof capacity of the gear pump is improved.

The utility model discloses a frame body structure of a cooling fan, which comprises a fan body, the fan body comprises a fan frame body, a fan device arranged in the fan frame body and a water tank arranged at the lower end of the fan frame body, the fan frame body is respectively provided with an air inlet and an air outlet, and the fan frame body is arranged in a circular shape. The lower end of the fan frame extends to be provided with a connecting part used for being connected with a water tank, the front end and the rear end of the fan frame are provided with an impeller assembly and a dustproof filter plate, an air inlet groove used for arranging the dustproof filter plate is formed in the fan frame along the air inlet, and an air outlet groove used for arranging an impeller is formed in the fan frame along the air outlet. The fan is reasonable in structural design, the fan is tightly and conveniently connected with a water tank through the circular connecting part at the lower end of the fan frame body, water leakage is avoided, the impeller assembly greatly improves impeller rotation stability, noise and collision are reduced, the service life is prolonged, the protective cover is rotationally clamped with the fixing clamping groove through the clamping teeth, installation and disassembly are convenient, and use is convenient. And later maintenance and replacement are facilitated.

The punching machine tool with the heat dissipation structure comprises a workbench and a machine frame, the machine frame is fixedly arranged right above the workbench, an air cylinder table is arranged above the front wall of the machine frame, a punching head is arranged below the air cylinder table, a punching base is arranged right below the punching head, and the punching base is connected with the air cylinder table. The punching base is located in the middle of the front side of the surface of the workbench, a storage groove is formed in the lower portion of the middle of the rack, a fixed base is installed in the storage groove, a cooling fan is arranged above the fixed base, and a movable base is installed in the middle of the movable base. According to the punching machine tool with the heat dissipation structure, the double heat dissipation fans are matched with the reciprocating motion mechanism, compared with a fixed heat dissipation mode, the heat dissipation effect can be effectively improved, the heat dissipation fans can swing left and right, a three-dimensional air supply path is formed, high-temperature parts such as a punching head and a punching base are cooled in a targeted mode, and the heat dissipation efficiency is improved. The position and the angle of the movable cooling fan can be automatically adjusted according to the working load.