60results about How to "Strong suction" patented technology

The invention relates to the technical field of rice processing, in particular to impurity removal equipment for rice production and processing, which comprises a straight channel, a bent pipe and the like, the left side of the straight channel communicates with a bent pipe. Rice is dispersed through the two adjacent first baffles and the two adjacent second baffles, the conveying pressure of the rice stacked in the straight channel is reduced, and the situation that due to the influence of the gravity of the rice, the rice is completely stacked at the bottom of the inner side of the straight channel to be conveyed, and blockage is caused is avoided; the first baffle and the second baffle drive rice to rotate while conveying, the rice is prevented from only making contact with the bottom of the inner side of the straightway, loss of the bottom of the inner side of the straightway is reduced, and the service life of equipment is prolonged. The length of each first baffle is larger than that of each second baffle, so that the conveying distance between every two adjacent first baffles is longer, the conveying distance between every two adjacent second baffles is shorter, the initial gushing position of the rice is changed, the phenomenon that the rice collides with each other after gushing at the same time is avoided, and the integrity of the rice after conveying is guaranteed.

The invention discloses a sewage treatment filtering and deslagging device and method, and relates to the technical field of sewage treatment.The sewage treatment filtering and deslagging device comprises a drainage component and a filtering component, the filtering component comprises a filtering box arranged below the drainage component, a sewage treatment pond is arranged in the middle of the filtering box, and two residue filtering grooves are further formed in the two sides of the sewage treatment pond; the sewage treatment device comprises a sewage treatment tank, a residue filtering tank is arranged in the sewage treatment tank, a hole is dug in a box plate between the sewage treatment tank and the residue filtering tank, a residue removing filter screen is mounted in the hole, two filter screen dredging components are further assembled in the sewage treatment tank, and a residue discharging component is assembled in the residue filtering tank. When particle impurities block the slag removal filter screen, the filter screen dredging assembly can push the cleaning roller to continuously roll back and forth, the bristles arranged on the cleaning roller can penetrate through the slag removal filter screen to push out and clean the particle impurities in the slag removal filter screen during rolling, and operation is easy and convenient.

The embodiment of the invention discloses an off-grid and grid-connected switching method, an off-grid and grid-connected switching device and an off-grid and grid-connected switching system of a parallel operation system, which are used for the technical field of parallel operation control. Wherein in the off-grid and grid-connected switching process of the parallel operation system, when a parallel operation control panel detects that the voltage difference between the two ends of a power grid contactor meets a contactor pull-in condition, the power grid contactor is controlled to be pulled in; when it is determined that the power grid contactor is reliably closed, the parallel operation control panel sends a grid-connected starting instruction to the multiple inverters, and the multiple inverters are controlled to enter grid-connected driving after off-grid driving is closed; that is to say, reliable actuation of the power grid contactor is ensured before the inverter stops driving, power is supplied to the load through the power grid after actuation of the power grid contactor, and no power failure of the load can be ensured. The method comprises the following steps of: controlling a plurality of inverters to close grid-connected driving in a grid-connected and off-grid switching process of a parallel system; and the parallel operation control panel sends an off-grid starting instruction to the plurality of inverters to control the plurality of inverters to enter off-grid driving, so that the load can be quickly electrified again.

The utility model discloses a relay driving circuit and charging equipment, and the driving circuit is connected with a relay through a first node, and comprises a coupling module, a first driving module, a second driving module and a first current limiting module. The coupling module is used for transmitting a voltage signal of the signal input end to a sixth node or turning off a connection path between the signal input end and the sixth node; the first driving module is used for responding to a voltage signal of the sixth node to connect the first node and the third node or turn off a connection path of the two nodes; and the second driving module is used for responding to the voltage signal of the signal input end to connect the seventh node and the third node or turn off the connection path of the two nodes. The first driving module and the second driving module are driven by the same path of driving I-O signals, and compared with an existing mode that two paths of driving I-O signals are controlled respectively, control resources are saved. And the problems of low starting speed and low power reduction amplitude of the relay are solved while reliable pull-in is ensured.

A punching and sampling device for road and bridge detection comprises a supporting plate, a rotating pipe is rotatably installed on the supporting plate and driven by a driving assembly to rotate, the lower end of the rotating pipe communicates with a sampling barrel, and an adsorption device is arranged in the sampling barrel; the adsorption device comprises a round pipe, a rubber sucker is fixed to the lower end of the round pipe, a piston is arranged in the round pipe and fixedly connected with a vertical rod, the vertical rod is in threaded connection with a transverse plate, and the transverse plate is fixed to the top end of the round pipe. According to the punching and sampling device for road and bridge detection, sampling is more convenient.

The invention relates to vacuum auxiliary equipment for filling concrete, the auxiliary equipment is used for auxiliary processing of a spiral cavity steel pipe filled with the concrete, the auxiliary equipment is located at the other end, deviating from filling equipment, of the steel pipe, and the auxiliary equipment comprises a pipeline assembly and a vacuum pump assembly, comprising a vacuum tube communicated between the outside and the spiral cavity, and one end of the vacuum tube is connected to the exhaust and drainage port; and the vacuum pump is connected with the other end, far away from the gas and water discharging opening, of the vacuum pipe, and the vacuum pump is used for discharging gas in the spiral cavity. The auxiliary equipment and the concrete conveying device are installed at the two ends of the steel pipe body respectively, mutual interference between the auxiliary equipment and the concrete conveying device is avoided through the layout design, and in the vacuum auxiliary filling process, the removal efficiency of bubbles and water in concrete is remarkably improved through the negative pressure effect; the negative effects of bubbles and water seepage on the strength and durability of the concrete structure are reduced.

The utility model belongs to the technical field of iron removal equipment, and particularly relates to an automatic wet iron remover, which comprises a shell with a front opening and a rear opening, a working bin is arranged in the shell, a front cover plate covers the front opening of the shell, a rear cover plate covers the rear opening of the shell, a plurality of sleeves and a support plate for supporting the sleeves are arranged in the shell, and the sleeves are sleeved on the support plate. The front end of the sleeve is closed, the rear end of the sleeve is open, the rear end of the sleeve is fixed to the rear cover plate through welding, the outer side of the rear cover plate is fixedly connected with an air cylinder seat plate, an air cylinder is installed on the air cylinder seat plate, a magnetic rod seat plate is arranged between the rear cover plate and the air cylinder seat plate, and a piston rod of the air cylinder is connected to the magnetic rod seat plate. Bare magnetic bar assemblies arranged in the corresponding sleeves in a sliding mode are arranged on the magnetic bar base plate, each bare magnetic bar assembly comprises a supporting shaft and a plurality of pieces of magnetic steel arranged on the supporting shaft in a sleeving mode, and the rear end of each supporting shaft is connected to the magnetic bar base plate. The iron removal device is strong in magnetic force, capable of adsorbing iron impurities with small particles and good in iron removal effect.

The utility model belongs to the technical field of road surfaces, and particularly relates to a municipal road surface traffic sign line marking construction device which comprises a bottom plate, two fixing plates are fixedly installed at the top end of one side of the bottom plate, and two electric telescopic rods are fixedly installed at the bottom end of one side of each fixing plate. The electric telescopic rods are started to drive the partition plate and the discharging barrel to move downwards, meanwhile, the round rod and the sponge roller also move downwards, when the sponge roller makes contact with the ground, the partition plate continues to move downwards, the sponge roller is driven to move downwards, and the discharging barrel is driven to move downwards. And when the discharging barrel is about to make contact with the sponge roller, the electric telescopic rod stops, the water pump is started, the marking raw material is pumped out and conveyed to the discharging barrel and then sprayed to the sponge roller, the bottom plate moves to make the sponge roller roll, road surface marking is completed, the spring is compressed to ensure that the raw material is attached to the road surface, and the marking quality and efficiency are improved.

The utility model relates to portable crop pest killer technical field especially portable crop pest killer, including pest killer shell, the pest killer shell is provided with connecting mechanism, the connecting mechanism contains the first assembly of setting in the pest killer shell upper section, the second assembly is provided with in the pest killer shell middle section, the third assembly is provided with in the pest killer shell lower section. Portable crop pest killer adopts the physical pest killing mode of double pest killing lamp first pest killing lamp and second pest killing lamp combination airflow suction, avoids the use of chemical pesticide, effectively reduces the pollution to the ecological environment such as soil, water source, the top drive motor drives the fan blade to produce downward airflow, the bottom exhaust fan provides strong suction, both cooperate with each other, accelerate the pest to move to the pest killer inside and transport to the collecting cylinder, again cooperate with the control of the falling rhythm of the pest of rotary plate and fixed baffle, significantly improve the pest trapping and collection efficiency, and the pest killing effect is greatly promoted.

The utility model provides a dust collection tool for a slip ring chamber of a generator set, which comprises a negative-pressure fan, a negative-pressure pipe, a brush plate, two connecting frames and a fixing plate, the negative-pressure fan is connected with the negative-pressure pipe through the connecting pipes, air inlets are symmetrically arranged on two sides of the end portion of the negative-pressure pipe, and the brush plate is connected with the two connecting frames through the fixing plate. A boss with a triangular cross section is fixedly connected to the top end of the interior of the negative pressure pipe, connecting holes corresponding to the air inlets are formed in the middles of the brush plates, first bristles are fixedly connected to the peripheries of the connecting holes, elastic pieces for opening the brush plates are arranged between the brush plates, and one ends of the connecting frames are fixed to the two sides of the two brush plates respectively. The middle of the connecting frame is hinged to the negative pressure pipe, arc-shaped grooves are formed in the adjacent side faces of the connecting frame, the fixing plate is fixed to the negative pressure pipe, a sliding groove is formed in the fixing plate, and a push column is slidably connected into the sliding groove. And the two brush plates are kept in a moderate opening state through the elastic pieces in a working state, so that the brush plates are in full contact with the surface of the slip ring, and the flexibility and pertinence of cleaning operation are improved.

The utility model discloses an energy-saving noise-reduction control circuit of a solenoid valve and a contactor. The circuit comprises a bridge rectifier circuit D1, a capacitor C1, a resistor R2, a resistor R3, a coil J1, a bidirectional silicon controlled rectifier Q0, a diode D3, an MOS tube Q1, a resistor R5, a resistor R6 and a capacitor C2. The control circuit is connected to the front end of the electromagnetic valve or the contactor, and at the moment after the control circuit is electrified, full voltage is supplied to the two ends of the solenoid of the electromagnetic valve or the contactor through the rectifying circuit and the bidirectional silicon controlled rectifier, so that the electromagnetic valve or the contactor reliably acts; and after short time delay, the Q0 is cut off, so that the coil and the capacitor C1 are connected in series, the voltage at the two ends of the coil is reduced, and the electromagnetic valve or the contactor is maintained in a state of just closing, the closing state of the electromagnetic valve or the contactor can be just maintained, the power consumption is reduced, the heating is reduced, the service life is prolonged, and the device is quiet and silent in a long-term operation process.

The application provides a middle shaft bowl set surface grinding device capable of reducing noise, relates to the technical field of middle shaft bowl set grinding, and comprises a fixed base, one side of the fixed base is provided with a fixed support plate, the top of a sealing cover is provided with an air pump, an output end of the air pump is provided with a main flow pipe, the sealing cover is located on the outer side of a positioning cover, the side of the main flow pipe is connected with a branch flow pipe, the branch flow pipe penetrates through the side of the sealing cover and is provided with a cleaning pipe, the cleaning pipe is installed on the inner side of the sealing cover, a groove is formed in the cleaning pipe, and the cleaning pipe is located at the bottom of a sound-absorbing plate. High-pressure airflow is guided to the cleaning pipe through the main flow pipe and the branch flow pipe, the high-pressure airflow sprayed from the groove of the cleaning pipe is used for cleaning the metal dust attached to the sound-absorbing plate, the problem that the metal dust is accumulated on the sound-absorbing plate is effectively avoided, and the problem that the metal dust generated in the grinding process is diffused along with airflow and attached to the surface of the sound-absorbing material, thereby seriously weakening the noise reduction effect is solved.

This invention relates to the field of power electronics technology, specifically to a switching relay control circuit and control method. The switching relay control circuit includes a signal control module, a power drive module, and a protection module. The signal control module receives an input control signal and outputs a drive signal. The power drive module responds to the drive signal by applying a first voltage to the relay coil to activate it, and automatically reduces the first voltage to a second voltage to maintain the activated state after activation. The second voltage is higher than the relay release voltage. The protection module provides unidirectional protection and voltage clamping for the circuit. This invention enables rapid and reliable relay activation, significantly reduces holding power consumption, and improves the circuit's anti-interference capability.

A household receiving and packaging integrated intelligent express cabinet comprises a control panel at the upper end of a sending and storing cabinet, a power source and a two-way switch are arranged on the right side of the sending and storing cabinet, a relay and a positive and negative switch are arranged on the left side of the sending and storing cabinet, locks are arranged on the sending and storing cabinet and a sending cabinet door, a receiving and storing cabinet is arranged below the sending and storing cabinet, and a plurality of supporting columns are arranged at the upper end of the receiving and storing cabinet. A compression device is arranged below the supporting column, a recycling storage cabinet is arranged below the receiving storage cabinet, a rectangular reserved space is formed in an upper supporting plate of the recycling storage cabinet, a binding device is arranged on the right side of the recycling storage cabinet, and lock catch devices are arranged on the receiving cabinet door and the recycling cabinet door. The control panel controls the lock to be opened so as to pick and place articles, the two-way switch controls the lock catch device to open the receiving cabinet door and the recycling cabinet door according to requirements, the positive and negative switch controls the compression device to compress paperboards, a user binds the compressed paperboards through the binding device, convenience is provided for the user and recycling personnel, and the recycling cabinet is convenient to use. And the working efficiency is improved.

The utility model relates to the related technical field of down feather recovery, discloses an air discharging and purifying device for a down feather production workshop, and aims to solve the problems of down feather waste, worker health damage, fire safety risk and the like in the down feather production process. An underground down absorbing system capable of absorbing down on the ground is arranged below a tempered floor, when the absorbed down is conveyed to a central recycling system, sorting of the down is achieved through an amplifier, and the flying down and the falling down can be recycled for the second time; meanwhile, air in the absorption process is subjected to water filtration and activated carbon deodorization through a rear-end filtering system, cleaner air can be discharged into a down feather production workshop, the working environment in the down feather production workshop is effectively improved, and finally the effects of down feather absorption, sorting and air purification are achieved.

The utility model discloses a steel plate rust removal mechanism for ship building and repairing, and relates to the technical field of steel plate rust removal. Comprising a movable support, the movable support is provided with a rust removal mechanism used for a steel plate for ship building and repairing, and the rust removal mechanism comprises the structure that when a sliding rail support rotates, the angle of a grinding wheel at the lower end of the sliding rail support can be adjusted, the grinding wheel is fixed to be in a vertical state, and in the ship building and repairing process, the working faces of the steel plate are diversified; a large number of horizontally-placed steel plates and vertical faces such as the side wall of the ship exist, through the rapid action of a second electric push rod, the grinding wheel can be rapidly switched between the two modes of horizontal grinding for plane steel plate rust removal and vertical grinding for ship side wall rust removal, manual disassembly and re-installation of grinding equipment are not needed, and the working efficiency is improved. The operation conversion time is greatly saved, the overall rust removal efficiency is improved, the rust removal requirements of steel plates at different positions and angles can be met, the working efficiency is improved, and multiple purposes are achieved through one machine.

The utility model relates to the technical field of batten cutting, and discloses a batten cutting device convenient for fixing a batten, which comprises a cutting knife mounted on a working table through a mounting frame I, the two pressing wheels are installed on the workbench through two second installation frames correspondingly, and the two pressing wheels are located on the two sides of the cutting knife. The condensing equipment is installed on the bottom plate, the condensing equipment is communicated with a condensing pipe, the condensing pipe penetrates through the cutting knife, and the cutting knife is provided with a containing cavity used in cooperation with the condensing pipe; the dust collection plate is mounted above the cutting knife; the dust collection equipment is mounted on the bottom plate, and the dust collection equipment is communicated with the dust collection plate through a connecting pipe. According to the shaving board cutting device, efficient, accurate and environment-friendly cutting of shaving boards is achieved through the cutting knife, the pressing wheel, the condensing device, the dust collection device, high-hardness materials, precise design, stable pressing, heat absorption and strong suction force.

The present invention provides a floor brush module and a wet and dry vacuum cleaner. The floor brush module includes a shell, a roller brush, a driving member, a dust pipe and a cleaning component. The technical solution of the present invention is to open a dust suction chamber and a suction port in the shell, and to set a roller brush and a driving member on the shell. The roller brush is rotatably connected to the shell, and the driving member is used to drive the roller brush to rotate. A dust pipe is set on the shell, and the first end of the dust pipe is set at the suction port. A cleaning component is set on the dust pipe. When the second end of the dust pipe is connected to the power device of the vacuum cleaner, a strong suction force is generated in the dust pipe. When the dust suction chamber of the shell is close to the floor, the dust and / or liquid on the floor enters the dust pipe from the suction port, and the cleaning liquid is sprayed onto the roller brush and / or the floor through the cleaning component. When the rotating roller brush cooperates with the cleaning liquid, the stains on the floor are wiped off and adsorbed.

The present invention relates to the field of relays, and in particular to a contactless P-channel energy-saving relay and a circuit switching method thereof. The energy-saving relay includes two types of contactless energy-saving relays, a single-coil one and a double-coil one. The contactless energy-saving relay with a single coil adopts a first resistor, a second resistor and a third resistor in parallel to form a voltage-dividing circuit. When the external load contact is fully attracted, the second resistor has no current, the G point potential increases, the insulated gate field effect transistor controls the control current to decrease, and the current of the first coil decreases, thereby achieving energy saving and reducing the heating of the coil to prevent it from burning due to long-term work. The contactless energy-saving relay with a double coil increases the external load contact confirmation function to ensure that the contact is reliably attracted, and will not cause the external load contact to be unreliably attracted, resulting in repeated conversion of the internal switching switch of the relay and the coil oscillation startup, resulting in the external contact oscillation and failure to be used normally.

The present invention relates to the field of waste gas treatment, and in particular to a waste gas treatment device for a laboratory, including a suction hood, a joint pipe, a mounting block and a suction box, etc.; the end of the joint pipe is connected to the suction hood; the end of the joint pipe is connected to the mounting block; the mounting block is connected to the suction box. The following effects are achieved: by placing the suction box at the source of the waste gas for suction, its volume is much smaller than the suction hood, avoiding blocking the line of sight of the experimenter and hindering the experimenter's operation, while avoiding the suction hood being unable to approach the laboratory table, the suction force is not concentrated, causing the waste gas to dissipate around in the laboratory, causing harm to the experimenter, and other problems. When there is more than one waste gas source, the suction box is split into left and right parts, and the two parts of the suction box are respectively placed on both sides of all the waste gas sources to ensure the suction coverage area, and avoid the waste gas being difficult to be completely sucked out when there are multiple waste gas sources.

The invention relates to an improved lifter, which is composed of a lifter body, a magnet part, a bearing and a lifting mechanism, and also includes a conversion device, the conversion device includes a check bearing, a converter, an adjusting spring, a chain, a bayonet and an adjusting spring, the outer periphery of the check bearing is coated with an aluminum sleeve, a spring spring is provided on one side of the converter, the check bearing, a magnetic core and the bearing are connected through the converter, and the converter is fixed with a chain interface; a connecting mechanism, the connecting mechanism includes a connector, a keyway and a key pin, both ends of the connector are provided with inclined grooves, the keyway and the key pin are arranged at both ends of the connector, and the key pin is installed in the keyway, the whole lifter structure is more compact, so that the suction and holding force is stronger, the residual magnetism of the magnetic circuit design is zero, the safety factor is improved, the maximum pull-off force is 2.8-4 times of the rated lifting force, the failure rate is reduced, it is safe and reliable, and is widely used in the fields of handling, leveling mechanical parts and transportation industries, installation and handling, so that the lifter has a smaller volume and a lighter deadweight.

This utility model belongs to the technical field of air supply ceilings, specifically relating to a soundproof laminar flow air supply ceiling. This ceiling is connected to a base plate via a rubber ring. The rubber ring has good elasticity and sealing properties, acting as a buffer to reduce vibration transmission between the base plate and the ceiling body, thereby reducing noise caused by vibration and improving sound insulation. The combination of a metal fixing ring and a magnetic ring allows the perforated plate to be directly fixed to the fixing holes on the underside of the laminar flow air supply ceiling by magnetic force, greatly saving installation time. When the perforated plate needs to be disassembled for cleaning, replacement, or repair, only a certain external force needs to be applied to overcome the magnetic attraction of the ring to separate the perforated plate from the metal fixing ring. Therefore, the perforated plate can be easily and quickly disassembled and assembled without additional tools, improving ease of use.

The utility model discloses a novel low-pressure oil pump with a strong heat-resistant armature, and relates to the field of automobile accessories. The novel low-pressure oil pump with the strong heat-resistant armature comprises an oil pump body and an armature unit, the oil pump body comprises a shell, a lower end cover and an upper end cover, an oil inlet is formed in the bottom of the lower end cover, a widened containing groove is formed in the lower end cover, and the armature unit comprises an armature body, a driving shaft and a thickened impeller. The armature body is installed in the shell, one end of the driving shaft is connected with the armature body, and the thickened impeller is rotationally arranged at the end of the driving shaft and rotationally arranged in the widened containing groove. According to the novel low-pressure oil pump with the strong heat-resistant armature, under the same rotating speed, the thickened impeller can extract and convey more fuel oil when rotating each time, so that the volumetric efficiency of the oil pump is improved, the single-circle oil supply amount of the oil pump is increased, the required oil supply pressure can be achieved under the lower rotating speed, and the environment temperature can be reduced.

The utility model discloses a kind of light calcium carbonate powder automation packaging equipment, including packaging assembly, including symmetrically arranged first fixed frame, fixed on the first fixed frame storage bin, symmetrically fixed on the first fixed frame first fixed plate, fixed on the first fixed plate and the discharge port of the communication storage bin auger conveyor, connected on the auger conveyor conveying pipe, placed in the auger conveyor below second fixed frame, fixed on the second fixed frame and connected in the conveying pipe bottom end weighing hopper and connected in the weighing hopper bottom end packaging discharge pipe;Closed component;Recycling component.This kind of light calcium carbonate powder automation packaging equipment, can replace traditional manual or with lacing to cover the mode of packaging bag opening, and packaging bag opening is completely sealed, avoid powder escape, and can absorb the powder that escapes into powder recycling tank, can reduce the waste of powder.

The invention discloses an intelligent-manufacturing-based automatic material taking and placing type laser internal carving machine, and relates to the field of intelligent manufacturing, the intelligent-manufacturing-based automatic material taking and placing type laser internal carving machine comprises a machine shell, a cabinet door is connected to the front part of the machine shell, a display screen is connected to the side surface of the machine shell, a button is connected to the side surface of the machine shell close to the display screen, and a ventilation opening is connected to the side surface of the machine shell; a laser device is installed in the machine shell. According to the automatic material taking and placing type laser internal engraving machine based on intelligent manufacturing, materials are taken through the disc suction device, then the materials are driven to the machining position to be engraved through extrusion of the extrusion rod, the automatic material taking function of the laser engraving machine is achieved, angle adjustment is achieved by pushing the bearing plate, and the working efficiency is improved. After angle adjustment, the materials can slide into the pouring groove from the inclined face through the gravity of the materials, the placing function of the laser internal engraving machine is achieved, finally, the materials are extruded and positioned through the positioning block, the materials are prevented from being interfered and inclined and deviated, and the stability of the materials in the machining process is improved.

The utility model provides a quartz sand sampling and detecting device, which relates to the technical field of quartz sand sampling and comprises a sampling bin, a sampling tube device is arranged on one side of the sampling bin, a sample storage device is arranged in an inner cavity of the sampling bin, and a suction device is arranged on the bottom side of the inner cavity of the sampling bin. According to the quartz sand sampling device, the negative pressure fan is started through the external controller, after the negative pressure fan is started, strong suction force can be generated, the suction force is transmitted into the connecting pipe through the metal net and the ventilation opening, the sampling suction head is moved to the position above a quartz sand sample, and the suction force in the connecting pipe sucks up the quartz sand sample through the sampling suction head; after the quartz sand samples in the sample storage basket are accumulated to a certain degree and the suction force generated by the negative pressure fan is not enough to suck the quartz sand again, the negative pressure fan is closed, the sealing cover is opened, and the sample storage basket is taken out by lifting the lifting handle II; and pouring the quartz sand sample in the sample storage basket to a detection area.

The utility model discloses a fly die machine magnetic disk for alloy die steel die bottom plate, including the magnetic disk frame body, the inside display of magnetic disk frame body is equipped with a plurality of reversible magnetic steel, the same side of every reversible magnetic steel all is equipped with the magnetic core, and the periphery of every magnetic core all is equipped with the irreversible magnet, and every reversible magnetic steel periphery all is equipped with excitation coil, and the positive and negative energization of two excitation coils respectively makes two excitation coils can produce the magnetic field of polarity opposite. The utility model discloses a high -frequency vibration current of giving demagnetization coil realizes the remanence on the die bottom plate and removes, makes the die bottom plate on no magnetic force, and further realizes the die bottom plate from fly die machine and easily unloads, avoids damaging die and fly die machine, and easy to use, save time and effort, and it effectively solved the problem that the traditional need adopts the crane and forcibly pulls open separation from the suction cup and leads to die and fly die machine to be easy to damage, time -consuming and labor -intensive.

The centerless grinding machine for hard alloy machining relates to the field of centerless grinding machines and comprises a machine body and a fixing plate, a motor shell is arranged on the left side of the top of the fixing plate, an electric telescopic rod is fixedly installed on the top of the motor shell, and a connecting channel is fixedly installed on the top of the electric telescopic rod. Through the arrangement of the dust collecting mechanism, the dust collecting mechanism can be directly placed between a grinding wheel frame and a guide wheel frame, chippings generated when a workpiece is ground can directly fall off, when the chippings fall off, air suction work is conducted through the exhaust fan body, strong suction force can be generated at the dust collecting mechanism, and therefore the falling chippings can be directly adsorbed; and after being adsorbed, the chippings enter a dust collection hose through a dust collection opening, and are conveyed to the inner cavity of the filter box through the dust collection hose to realize the work of sucking, filtering and collecting the chippings, so that the direct sucking work in the machining process is effectively ensured, and the situation that the chippings are too many and accumulated is avoided.

A hair debris collecting device comprises a bearing box body, a filtering mechanism, an absorbing mechanism and a control mechanism, the bearing box body is composed of a loading box, a telescopic rod, a supporting base, an anti-skid plate, a maintenance plate, a guide-in pipe, a mounting bolt and a grabbing handle, the filtering mechanism is arranged in the loading box of the bearing box body, and the filtering mechanism is composed of a filtering box, a filtering plate and a heating pipe. An absorption mechanism is arranged on the lower side of the loading box of the bearing box and composed of a waterproof fan, an installation support and a water outlet pipe, and a control mechanism is arranged on the side face of the loading box of the bearing box and composed of a control panel, a control knob and an indicator lamp. Due to the fact that the absorption mechanism is provided with the waterproof draught fan, strong suction force can be generated at the leading-in pipe under the closed box body, the device is provided with the heating pipe, wet hair and chippings can be dried, and therefore transportation and collection are convenient.

The invention relates to the technical field of household appliances, and discloses a silencing assembly and a sweeping robot, the silencing assembly comprises a shell, an air inlet, a first expansion cavity and an air outlet which are sequentially communicated are formed in the shell, and the sectional area of the first expansion cavity is larger than the sectional area of the air inlet and the sectional area of the air outlet; one end of the inner insertion pipe is connected to the air inlet and / or the air outlet, the other end of the inner insertion pipe extends into the first expansion cavity, and the cross section area of the inner insertion pipe is smaller than that of the first expansion cavity. According to the silencing assembly, sound waves in a certain passing frequency range can be eliminated through the inner inserting pipe, so that the noise reduction effect of the silencing assembly is improved, and the user experience can be improved. Therefore, the noise reduction assembly can effectively reduce the noise of the air duct, the material cost of the noise reduction assembly is reduced, and the aerodynamic performance of the sweeping robot cannot be greatly lost.