95results about How to "Increase the blowing area" patented technology

The invention discloses an efficient grinding equipment for pipeline finish machining and polishing. The efficient grinding equipment comprises a base, a shell is fixed to the top of the base, a clamping mechanism, a grinding mechanism and a dust removal mechanism are arranged inside the shell, a driving mechanism used for driving the clamping mechanism to rotate is fixed to the top of the base, and a transmission mechanism is arranged on the outer wall of the shell above the driving mechanism. According to the efficient grinding equipment for pipeline finish machining and polishing, by arranging the driving mechanism, the clamping mechanism, the grinding mechanism and the dust removal mechanism, the phenomenon of missing grinding of the surface of a circular pipe is avoided while the circular pipe is uniformly ground, the grinding effect and the grinding speed of the circular pipe are improved, and meanwhile, the effect of efficiently removing dust in the shell is achieved.

The invention discloses a spinning cloth winding device with drying and sterilizing functions. The device comprises a winding box, mounting plates, a fan, an electric heating wire and a driving motor,wherein a box door is mounted on the surface of the front side of the winding box; the mounting plates are arranged in the winding box; ultraviolet lamps are mounted at the outer ends of the mountingplates; the fan is arranged above the left of the winding box; the lower end of the fan is connected with an air guide pipe; the electric heating wire is arranged below the air guide pipe; the two ends of the electric heating wire are connected with fixing plates positioned on the inner wall of the winding box; and an electrostatic elimination rod is arranged below the left of the fixing plates.The spinning cloth winding device with the drying and sterilizing functions is provided with the electrostatic elimination rod, connecting blocks and a movable rod, spinning cloth passing through thesurface of a first rotary drum can be subjected to electrostatic elimination through the electrostatic elimination rod, and meanwhile, the position of the connecting blocks can be controlled through the rotation of the movable rod, so that the distance between the electrostatic elimination rod and the first rotary drum is conveniently adjusted.

The invention discloses a mold clamping forming machine, which comprises a base, support legs are fixedly connected to both sides of the top of the base, a control box is fixedly connected to the top of the base, and a support plate is fixedly connected to the top of the support legs , the top of the support plate is fixedly connected with a lower module, the top of the lower module is provided with a lower mold groove, the bottom of the inner cavity of the lower mold groove is provided with cooling holes, and both sides of the support plate top are fixedly connected with fixed The rod is fixed on the surface of the rod and is movably connected with a lifting plate at the top of the lower module. The present invention can improve the compression effect of the module by setting cooling holes, limiting plates, grooves, clamping slots, clamping blocks, electric telescopic rods, suction nozzles, water tanks, water pumps, cooling plates, cooling pipes, blowers and ventilation holes. It is better, and it can also perform good heat dissipation on the mold, which improves the heat dissipation efficiency of the module, speeds up the production rate of hand dryers and baby tables, and brings greater economic benefits to the enterprise.

The invention discloses a heat shrinkable film production shaping device. The heat shrinkable film production shaping device comprises a supporting frame, a U-shaped plate and a second rotating shaft,wherein the bottom of the U-shaped plate is fixed to the top of the supporting frame; and one end of the second rotating shaft is arranged on the front surface of the U-shaped plate through a bearing. According to the heat shrinkable film production shaping device, a second motor and a draught fan are started, when the second motor is started, a half gear can be indirectly driven to rotate, due to the fact that teeth meshed with the half gear are fixedly connected to the top and the bottom of the inner wall of a movable frame, the half gear can rotate through the meshing effect with the teeth, the movable frame can be indirectly driven to move left and right, a drying nozzle can be indirectly driven to move left and right through a telescopic rod by means of left and right movement of themovable frame, a heat shrinkable film can be blown in a reciprocating mode through cooperative arrangement of the draught fan and an air outlet pipe, the blowing area of the heat shrinkable film is increased, therefore the drying and shaping effect of the heat shrinkable film can be improved, and the quality of later film formation is ensured.

The invention discloses a communication power supply cabinet with uniform heat dissipation, which includes a housing. A first mesh sheet is fixedly mounted inside the housing and divides the housing into a storage bin and a fan bin; two power motors are fixedly connected to the inside of a top plate of the fan bin; sprocket wheels are fixedly connected to the output shafts of the power motors; a chain sleeves the outer sides of the sprocket wheels; a trapezoidal slider is fixedly connected at the bottom of the chain; a fixing frame is slidably connected to the bottom of the trapezoidal slider;a motor base is fixedly connected to the bottom of the fixing frame; a fan motor is installed at the bottom of the motor base; fan blades are fixedly connected to the output shaft of the fan motor. When the power motors are controlled to rotate, the chain is driven to rotate on the two sprocket wheels and the fan structure fixedly connected to the chain reciprocates left and right in the fan binso as to carry out omni-directional air blowing and heat dissipation to the storage bin. The device structure is arranged in the housing body to avoid damage caused by external factors, so that the service life of parts and components is prolonged; the communication power supply cabinet has large air blowing area and uniform heat dissipation and meets the service requirements.

The invention aims to provide a ceiling fan for solving the problem of inlet and outlet air heat short circuit in traditional ceiling fans. The ceiling fan comprises a bladeless fan component serving as an air blowing mechanism of the fan. The bladeless fan structure is applied to the ceiling fan; and the structural characteristics that air inlet and outlet directions of the bladeless fan are staggered in the space, the distance between the air inlet and the air outlet is far, and the mutual interference of inlet and outlet air flows is small are fully utilized, so that the problem of inlet and outlet air heat short circuit in the traditional ceiling fans is effectively prevented.

The invention discloses an energy-saving high-efficiency reflow welding machine. The energy-saving high-efficiency reflow welding machine comprises a protective frame, a shell, conveyor belts, a firstauxiliary welding chamber, a circulating seat and a second auxiliary welding chamber, wherein the protective frame is fixed at the middle position inside the shell; the first auxiliary welding chamber is arranged in the shell and on one side of the protective frame; the second auxiliary welding chamber is arranged in the shell and on the other side of the protective frame; and feed inlets are formed in one end, of the shell, at the positions of the second auxiliary welding chamber, the first auxiliary welding chamber and the protective frame. According to the energy-saving high-efficiency reflow welding machine, cooling plates are arranged at the parts, of the tops of fixed seats, at the positions of discharge outlets, heat-conducting fins extending into evaporation chambers are uniformlyarranged at the bottoms of the cooling plates, and liquid distribution pipes connected to the output ends of water pumps are extended into the evaporation chambers. Therefore, the heat-conducting fins can be used to conduct the temperature of the cooling plates conveniently and the temperature of hot air escaping from the discharge outlets can be collected, so that the heat loss is smaller; and cooling water is used to contact the heat-conducting fins to generate steam, which absorbs heat when evaporating, and workpieces moving to the positions of the discharge outlets are cooled, so as to improve the welding effect.

The invention provides a novel rice milling emery roll which comprises an emery roll body and a metal core sleeve which is embedded in an inner hole of the emery roll body. The novel rice milling emery roll is characterized in that the emery roll body is a special-shaped body composed of a square part and an arc-shaped part, the horizontal plane of the arc-shaped part is connected to the square part, the out-protruding surface of the arc-shaped part points outwards, and long-strip-shaped air spraying holes are respectively formed in two sides of the protruding arc-shaped part. The novel rice milling emery roll is simple in structure, low in manufacturing cost and good in machining quality, can reduce energy consumption and can be widely used in the rice milling industry.

The invention belongs to the technical field of stepping motors, and particularly relates to a radiation-resistant and high-temperature-resistant stepping motor. In response to the problem that the existing stepping motor has a large amount of heat and is more likely to be interfered by external signals during use, the following scheme is proposed: the stepping motor comprises a motor body, the outer side of the motor body is hermetically and fixedly sleeved with a radiation-proof casing, a fixed box is arranged below the radiation-proof casing, one side of the motor body is fixedly connectedwith a first cooling fin, one side of the first cooling fin is fixedly connected with a plurality of heat conducting rods, the same second cooling fin is fixedly installed on one sides of the plurality of heat conducting rods, and a condensation pipe is arranged on the outer side of the second cooling fin in a winding mode. According to the invention, the structure is simple, the radiation resistance and the high temperature resistance of the stepping motor body are effectively improved, the manufacturing structure is simple, the production cost is low, the service life of the stepping motor body is effectively prolonged, and the stepping motor has a relatively strong and wide market popularization prospect.

The invention relates to the technical field of air conditioning, in particular to a circumferential air outlet fan blade. The fan blade comprises an impeller rotary shaft, a first blade group, a second blade group and a partition board, wherein the first blade group and the second blade group are mounted on the impeller rotary shaft; the first blade group comprises a plurality of first blades, and the second blade group comprises a plurality of second blades; the partition board is fixed to the impeller rotary shaft; the two side faces of the partition board are opposite to the first blade group and the second blade group correspondingly; and the partition board is located on the axial air outlet side of the first blade group and the second blade group. According to the circumferential air outlet fan blade, through the arrangement of the partition board, axial flowing air flows along the surfaces of the partition boards under the action of the partition board, and divergent planar air outlet is realized. Meanwhile, air inlet can be realized on the two sides of the fan blades through the first blade group and the second blade group, and air outlet can be realized in the circumferential direction of the fan blades. The 360-degree air blowing effect is really realized. The invention further provides a fan.

The invention discloses wild pepper seed selection, degreasing and drying integrated equipment which comprises a workbench, a cleaning mechanism and a drying box. A spiral conveying mechanism is arranged on the side, close to the drying box, of the cleaning mechanism, and a belt conveying mechanism capable of conveniently conveying materials to the drying box is arranged at the lower end of an outlet of the spiral conveying mechanism. The cleaning mechanism comprises a cleaning barrel, a stirring structure and a first motor. The spiral conveying mechanism comprises a conveying barrel, a conveying screw and a second motor. The drying box comprises a box body, a heating mechanism and a vibration mechanism. In the wild pepper seed selection, degreasing and drying integrated equipment, under the action of the cleaning mechanism, an external power source of the first motor is turned on, the first motor drives a stirring paddle to rotate, water containing soda can be mixed evenly, and falling of grease on the surfaces of wild pepper seeds can be accelerated; an external power source of the second motor is turned on, the conveying screw is driven to rotate, the conveying screw cooperateswith the conveying barrel, and therefore cleaned seeds in the cleaning barrel can be sucked onto the conveying belt; and cleaning liquid can be drained by a water outlet valve, and seeds and cleaningliquid can be added through a feeding opening.

The invention discloses a heat dissipation base for a high power computer server. The heat dissipation base comprises a shell, piston cylinders, a server placement slot and a first motor. The pistonsare symmetrically mounted at the inner side of the shell. Pistons are set at the inner sides of the piston cylinders in a slide mode. The pistons are fixedly connected with one end of push rods. The other end of the push rods penetrates the piston cylinders and is fixedly connected with a motor fixing block. Air inlets on the piston cylinders are communicated with air intake covers set at the upper end of the shell through guide pipes. The heat dissipation base is novel in design; when a set threaded rod carries out reciprocating rotation, the motor fixing block and a first motor and a fan blade at the upper end of the motor fixing block are driven by a threaded bushing to carry out reciprocating left and right movement, so a blowing area of the fan blade is increased, so the heat dissipation effect is improved; and when the motor fixing block moves left and right, the push rods at two sides are driven to carry out reciprocating left and right movement, so the pistons carry out reciprocating movement in the piston cylinders, heat generated in a server is taken away, effect that air around the server flows rapidly is achieved, and a heat dissipation effect is improved.

The invention discloses a notebook computer radiator with a lifting function. The device comprises a lifting frame, a first fan, a second fan, a third fan, a grating plate and bottom feet, a screw rodis arranged in the lifting frame; a motor is fixedly connected to the outer wall of the right side of the lifting frame; the right end of the screw rod is sleeved with a left bevel gear and a right bevel gear, the shaft extension end of the motor is sleeved with a half-bevel gear, the half-bevel gear is intermittently meshed with the left bevel gear and the right bevel gear, the lead screw is sleeved with a first sliding block, a second sliding block and a third sliding block, the first fan is installed on the upper surface of the first sliding block, the second fan is installed on the uppersurface of the second sliding block, and the third fan is installed on the upper surface of the third sliding block. A bottom frame is arranged below the lifting frame, the second sliding block, the second fan and the third fan synchronously move left and right while heat dissipation is conducted, the air blowing area is enlarged, the heat dissipation effect is greatly improved, and the height ofthe lifting frame can be adjusted according to the requirements of people so as to adapt to different use requirements.

The invention discloses an agricultural seed screening device which comprises a box body, wherein a base is arranged below the box body; a buffering mechanism is arranged between the base and the boxbody; and a first filtering plate, a second filtering plate and a third filtering plate are arranged in the box body. The agricultural seed screening device improves the defects in the prior art; under the action of a guiding plate, material slides to the highest end of the corresponding filtering plate, so that the material can obtain the longest filtering time to eliminate the defects of the existing device; under the action of a hot-air blower, hot-blast air enters a caching box and a flow guiding cavity along an air guiding tube and then spray out from an air ejector tube to carry out blow-drying treatment on the material on the surfaces of the filtering plates, so that drying of the material is facilitated; and the drying manner increases the air blowing area and is high in practicality.

The invention discloses a dust removal method and device of an air conditioner, the air conditioner and electronic equipment. The dust removal method comprises the following steps that the air conditioner is controlled to enter a dust removal mode; each fan in the outdoor heat exchanger is controlled to reversely operate, and dust removal is performed on the outdoor heat exchanger; and the numberof the fans in the outdoor heat exchanger is larger than 1 according to the outdoor heat exchanger, and each fan in the outdoor heat exchanger can be combined for reverse operation based on differentrotating speed combinations, so that the front air field can be formed, the outdoor heat exchanger can be subjected to dust removal, accumulated dust on the surface of the outdoor heat exchanger can be reduced, the heat exchange effect of the outdoor heat exchanger of the air conditioner is guaranteed, and the air conditioner can play the best performance.

The invention discloses a sweeping device for a steel plate pretreating line. The device comprises a closed stripy box body which is mounted at an inlet end of a sweeping chamber, wherein brush hair is arranged on the lower end surface of the box body; an air pump is arranged at one side of the box body; the air pump is connected to the box body through an air inlet and can be used for supplying air into the box body; air outlet tubes which are distributed among the brush hair are distributed on the lower end surface of the box body; an air injecting port capable of injecting air to the surface of a steel plate is formed in the tail end of each air outlet tube. With the adoption of the device adopting the abovementioned structure, air can be injected during sweeping to completely clean theresidues and dust; the device is simple and ingenious in structure design, and high in use reliability; particularly the air outlet tubes can extend 5-10cm out of the box body, so that the air injecting ports can be fully close to the surface of the steel plate, and as a result, the cleaning effect is improved, and the energy conservation is saved; in addition, the air injecting ports face the outside of the sweeping chamber, so that the air injecting area is increased, and as a result, the sweeping effect is further improved.

The invention discloses a computer host placing device capable of efficiently dissipating heat. The device comprises a shell, a control panel is arranged at the top of the shell, ventilation holes areformed in the left side face of the shell, a storage battery is fixedly connected to the bottom of the inner wall of the shell, the front face of the shell is hinged to a cover plate through hinges,and a handle is fixedly installed on the front face of the cover plate. According to the invention, through cooperation between a first motor, a second motor, a third motor, a first blade, a second blade and a cam, the purposes of ventilation and heat dissipation are achieved; by use of the advantages of flexible movement and wide blowing area of the heat dissipation fan, air receiving fan of thecase body is quite uniform, and it is sufficiently ensured that the heat is blown away by outside cold air in time after the case body is heated, it is guaranteed that efficient and timely heat dissipation of the case body is achieved due to the fact that the reasonable ventilation holes are formed in the device, and a computer is used more smoothly and efficiently in life and work.

The invention relates to a steam soot blower, in particular to a steam soot blower of a novel multifunctional blowing tube. The steam soot blower of the novel multifunctional blowing tube is characterized in that the steam soot blower of the novel multifunctional blowing tube comprises the blowing tube, a fluid switch control unit, an angle adjusting device and a blowing tube nozzle assembly. Two parallel conveying tubes are wrapped by the blowing tube, wherein the two parallel conveying tubes are a steam conveying tube and a high-temperature water conveying tube. The fluid switch control unit comprises a power source, a steam switch solenoid valve, a high-temperature water switch solenoid valve, a first switch, a second switch and a third switch. The angle adjusting device comprises a metal bellows assembly and an adjusting support assembly, wherein the metal bellows assembly comprises a metal bellows I mounted on the blowing tube, a metal bellows II mounted on the steam conveying tube and a metal bellows III mounted on the high-temperature water conveying tube, and the adjusting support comprises a fixed assembly and an adjusting assembly. The blowing tube nozzle assembly comprises a steam blowing tube nozzle, a combined blowing tube nozzle and a high-temperature water blowing tube nozzle, and the blowing tube assembly is connected with the steam conveying tube and the high-temperature water conveying tube through a tee joint ball valve. According to the steam soot blower of the novel multifunctional blowing tube, multiple blowing modes and multiple blowing angles can be obtained, the blowing area can be enlarged, high blowing full scale can be achieved, no blowing dead angles can be left, effective spraying can be improved, and the blowing effect is improved.

The invention discloses a cleaning method of an air conditioner. The method comprises the following steps of identifying that the air conditioner receives a cleaning instruction; controlling the surface of an outdoor heat exchanger to frost; controlling the outdoor heat exchanger to defrost so as to remove dust of the outdoor heat exchanger. According to the method, after identifying that the airconditioner receives the cleaning instruction, frosting and defrosting can be carried out on the surface of the outdoor heat exchanger on the basis of controlling the air conditioner, and then all fans in the outdoor heat exchanger are continuously controlled to perform reverse operation at different rotating speed combinations after defrosting is finished, so that a front air field can be formed,the outdoor heat exchanger is subjected to dust removal, accumulated dust on the surface of the outdoor heat exchanger can be reduced, the heat exchange effect of the outdoor heat exchanger of the air conditioner is guaranteed, and the air conditioner can play the best performance.

The invention discloses an intelligent noise reduction cabinet for a server, which comprises a cabinet body, a noise reduction mechanism, a mounting mechanism and a heat dissipation mechanism, and ischaracterized in that the mounting mechanism is arranged on the side wall of the cabinet body, the cabinet body is connected with the noise reduction mechanism through the mounting mechanism, and theheat dissipation mechanism is arranged on the inner wall, away from the mounting mechanism, of the cabinet body; the noise reduction mechanism comprises a frame body, a limiting groove and a noise reduction unit; wherein the frame body is of a box body structure with an opening in one side, a limiting groove is formed in the inner wall of the frame body, mounting holes matched with the noise reduction units are formed in the outer wall, away from the opening, of the frame body, the mounting holes are distributed in a honeycomb shape, the sections of the multiple sets of noise reduction units are hexagonal, and each noise reduction unit is of a cylinder structure with an opening in one end. The side wall, away from the noise reduction unit, of the frame body is attached to the outer wall ofthe cabinet body, and a sealing washer is arranged on the side wall, away from the noise reduction unit, of the frame body. The noise reduction mechanism and the heat dissipation mechanism cooperatewith each other, and the working efficiency of the noise reduction mechanism and the heat dissipation mechanism is improved.

The invention discloses a recovery device for selective laser melting recovered powder. The recovery device comprises a powder screening bin, a powder falling bin, a powder blowing bin and a base arranged in sequence from top to bottom; a screen is arranged in the powder screening bin; a flow dividing piece with a flow dividing hole is arranged between the powder falling bin and the powder blowingbin; one side of the powder blowing bin is connected with an intake pipe; the side wall, opposite to the intake pipe, of the powder blowing bin is connected with an exhaust pipe outwards extending; more than two classification holes are formed in the bottom of the exhaust pipe; the distances from the classification holes to the side wall of the powder blowing bin are different; and the lower parts of the classification holes are connected with powder collecting barrels. A ultrasonic generator is arranged at the bottom of the powder screening bin. Due to the density difference of waste slag and metal powder, proper gas flows are adopted to vertically blow the recovered powder, so that the falling distances of the waste slag and the metal powder are different to achieve effective separation, and high purity of the recovered powder is guaranteed. The recovery device is simple in structure, convenient to operate, suitable for recovery of various material recovered powder, high in safety coefficient and wide in application range.

The invention discloses a wind direction changeable cooling fan. The wind direction changeable cooling fan comprises a fan frame. A fan driver is arranged in the fan frame. The driving end of the fandriver is provided with a plurality of sets of fan blades. An air inlet net is arranged opposite to the fan driver. The air inlet net is mounted on the fan frame through fasteners. A flow channel is arranged in the position, located on one side of the fan driver, of the fan frame. The position of the flow channel is consistent with the rotating direction of the fan blades. The edge of an air outlet of the fan frame is provided with an air outlet surface. The air outlet surface belongs to an upward arc surface. An arc-shaped plate is arranged in the position, close to the air outlet, of the flow channel. The wind direction changeable cooling fan is provided with the at least one arc-shaped plate which is mounted at the air outlet in the flow channel. The wind direction is changed, so that the cooling fan has the uniform air outlet volume and achieves the directional heat dissipation purpose; the air outlet surface is arranged into the arc surface; through the suction wall effect, the flow guidance design is added to the air outlet position, and the air blowing area of the cooling fan is increased. Accordingly, the higher cooling effect can be achieved.

The invention relates to the technical field of water heaters, in particular to an air-source water heater. The air-source water heater comprises a compression circulating pipeline and a defrosting device; the compression circulating pipeline comprises a compressor, a condenser, a throttling valve and an evaporator which are connected sequentially; an outlet of the evaporator is connected with aninlet of the compressor; the defrosting device is arranged on one side of the evaporator; and compressed air for blowing the surface of the evaporator to provide heat and power which are required during defrosting of the surface of the evaporator is stored inside the defrosting device. The invention further provides a defrosting method of the air-source water heater. Production of hot water by theaid of the air-source water heater is not hindered while defrosting is performed, the defrosting time is short, the efficiency is high, and the energy utilization rate is high.

The invention provides an anti-sedimentation coating machine. Air is blown to the lower part of a liquid level in a tank body through an air outlet pipe which is arranged below the total liquid level of the tank body and a plurality of air outlet holes formed on the air outlet pipe, airflow blown to the lower part of the liquid level has a function of blowing coatings in the tank body, the adjacent blown coatings are collided with each other, and an anti-sedimentation effect is enhanced; and moreover, the coatings in the tank body are blown by the air outlet holes from different positions, the sedimentation can be fully prevented, and the defect that the manual stirring efficiency is low is overcome.

The invention belongs to the technical field of power distribution cabinets, and particularly relates to a multifunctional power distribution cabinet for a power transformer substation. Aiming to solve the problems that an existing power distribution cabinet often causes line combustion due to too slow heat dissipation, causes short circuit of an electric wire and property loss once a fire occursin the power distribution cabinet and seriously threatens the lives of surrounding personnel, the invention proposes the following scheme that the power distribution cabinet comprises a power distribution cabinet body; an ammeter and a connecting wire are fixedly installed in the power distribution cabinet body; a cabinet door is hinged to one side of the power distribution cabinet body; a door lock is fixedly installed on the cabinet door; a lock sleeve is fixedly installed on the inner wall of the right side of the power distribution cabinet body, and two positioning plates are fixedly connected to the inner side of the cabinet door; and the two first sector gears are matched with the gear. According to the invention, the gear and the first rolling shaft can be pushed to continuously rotate back and forth, then the second rolling shaft and the heat dissipation fan can be continuously shaken back and forth, the air blowing area of the heat dissipation fan is increased, so the heat dissipation is accelerated.

The invention relates to the technical field of machining, and discloses a clamp for machining a cylindrical workpiece. The clamp comprises a machine shell, a fixing pile is fixedly connected with the outer wall of the lower side of the machine shell, a clamping plate head is rotatably connected with the outer wall of the fixing pile through a bearing, and a pull rod is fixedly connected with the outer wall of the clamping plate head; a motor is embedded and fixed to the upper surface of the machine shell, and an air supply mechanism is arranged on the outer wall of the machine shell; a transmission mechanism is arranged in the machine shell; during use, the clamping plate head is refilled with air through a second air supply pipe for heat dissipation, and air flows through the interior of a fixing shell to dissipate heat of an oil bag and cooling liquid in the fixing shell; and a mesh plate descends to press an elastic piece to descend to the position of the right side of the clamping plate head and make contact with a tooth-shaped structure on the surface of the clamping plate head, so that tiny vibration is generated, scrap iron on the surface of the clamping plate head is vibrated off, the self-cleaning effect is achieved, and the purpose that the temperature of the clamping head of the clamp can be stable when the high-temperature columnar workpiece is extracted is comprehensively achieved.

The invention discloses a controllable hot air distributor which comprises an air supply mechanism and a heating mechanism. The heating mechanism is provided with a heater in a heating air pipe, one end of the heating air pipe is connected with an air supply opening of a fan of the air supply mechanism, the other end of the heating air pipe is connected with an S-shaped air flue, the S-shaped air flue is fixedly arranged on the inner side of a closed box, an air outlet of the S-shaped air flue is upward, an air distribution plate is fixedly arranged on the air outlet, a plurality of strip-shaped through holes are formed in the air distribution plate, the section of the air outlet of the S-shaped air flue in the direction perpendicular to the grain conveying direction is in a horn shape, the section of the air outlet of the S-shaped air flue in the direction parallel to the grain conveying direction is narrow in upper portion and wide in lower portion, and a butterfly valve for adjusting the direction and flow of hot air is arranged below the air outlet of the S-shaped air flue. The S-shaped air flue is adopted to enable airflow to pass through the air outlet from bottom to top, air resistance is lowered, the hot air passes through the strip-shaped through holes formed in the air distribution plate to form the wall-shaped airflow, grain can bounce evenly and continuously when flowing on a net belt, and the contact time and contact area of the grain and the hot air are increased.

The invention belongs to the field of cutting equipment, particularly relates to blank circuit board machining and cutting equipment, and provides the following scheme now to solve the problem that existing cutting equipment is inconvenient to clamp and fix an original part during cutting. The blank circuit board machining and cutting equipment comprises a base, a protective cover is fixedly connected to the top of the base, a first groove is formed in the right side of the protective cover, a second groove, a falling groove, a first sliding groove, a first movable groove and a second sliding groove are formed in the base, the second groove communicates with the falling groove, a fixing block is fixedly connected to the top of the base, a first hydraulic cylinder is fixedly connected to the left side of the fixing block, a movable frame is fixedly connected to an output shaft of the first hydraulic cylinder, the movable frame is glidingly connected to the top of the base, the outer side of the movable frame is glidingly connected with the inner wall of the first groove, a second transverse groove is formed in the movable frame, and a fixing plate is fixedly connected to the left side of the movable frame. According to the equipment, the original part can be clamped and fixed conveniently during cutting, and the equipment is simple in structure and convenient to operate.