29results about How to "Reduce suction" patented technology

The invention belongs to the technical field of semiconductor processing, and discloses a semiconductor wafer positioning device which comprises a shell, an outer ring is fixedly installed at the top end of the shell, a plurality of guide grooves are formed in the circumference of the upper surface of the outer ring at equal intervals, sliding blocks are slidably connected to the middles of the guide grooves in a sleeving mode, and a plurality of positioning mechanisms are arranged on the circumference of the outer curved surface of the shell at equal intervals. A driving mechanism fills air between a connecting seat and a fixing plate in an inner cavity of a shell to push an adsorption mechanism to move upwards, and a plurality of pressure valves which bear the maximum atmospheric pressure equal to the weight of the adsorption mechanism are arranged, so that when a wafer is separated from a clamping and positioning device and is in contact with an object carrying sleeve, the plurality of closed pressure valves are opened, and the wafer is clamped and positioned. And the wafer slowly pushes the adsorption mechanism to move downwards under the action of gravity, so that the problems of wafer deformation and center offset caused by rigid contact between the wafer and the workbench in the process of directly placing the wafer on the upper surface of the workbench in the existing wafer positioning and clamping device are solved.

The invention discloses an adjustable cable preparation wire drawing forming machine, and relates to the technical field of cable wire drawing forming machines, the adjustable cable preparation wire drawing forming machine comprises a shell, a fixing block is rotatably connected in the shell, a round rod is fixedly connected to the outer side of the fixing block, a spur gear is fixedly connected to the outer side of the round rod, and a through hole is formed in the fixing block; an arc block is fixedly connected to the inner wall of the through hole, a positioning assembly is arranged in the middle of the interior of the fixing block, a rotating wheel is slidably connected to the through hole, a fixing plate is rotatably connected to the outer side of the rotating wheel, an elastic plate is fixedly connected to the outer side of the fixing plate, and a guide assembly is fixedly connected to the end, away from the rotating wheel, of the fixing plate. According to the adjustable wiredrawing forming machine for cable preparation, the guide assembly makes contact with the outer side of a copper wire, the copper wire can advance in the preset direction in the wiredrawing process, deviation or bending cannot occur, a stable path is provided for wiredrawing of the copper wire, and the copper wire is prevented from deviating from the correct path in the wiredrawing process.

The utility model discloses a breast pumping assembly and a breast pump, and the breast pumping assembly comprises a fixed part, a diaphragm support, an outer layer milk guide part and an inner layer milk guide part; the diaphragm support is connected to the fixing piece and provided with a negative pressure cavity. The outer-layer milk guide piece is connected to the fixing piece, and when the breast pump is arranged on the breast, the outer-layer milk guide piece is located above the diaphragm support; the outer-layer milk guide piece is provided with a first milk guide channel, a milk flowing hole and a first air guide hole; the inner-layer milk guide piece is provided with a second milk guide channel communicated with the first milk guide channel and a second air guide hole communicated with the second milk guide channel, and at least part of the inner-layer milk guide piece extends into the first milk guide channel; the inner-layer milk guide piece and the outer-layer milk guide piece define an air guide channel communicating the first air guide hole and the second air guide hole, and the second air guide hole is located above the central axis of the second milk guide channel when the breast pump is placed on the breast. According to the milk sucking assembly, milk is prevented from flowing into the negative pressure cavity, and therefore the negative pressure cavity is prevented from being polluted, and the sucking performance of the breast pump is prevented from being reduced.

The present application relates to a thin-walled shell forming mold, which belongs to the field of processing and forming technology. The thin-walled shell forming mold includes a first mold body and a second mold body; the first mold body includes a first molding surface; the second mold body includes a second molding surface, and the second molding surface and the first molding surface form a molding cavity for molding the shell; wherein the first molding surface is provided with a gate for injecting molding liquid into the molding cavity, the second molding surface is provided with a plurality of first air holes for discharging gas from the molding cavity, and the second mold body is provided with an air cavity for accommodating gas, and the plurality of first air holes are connected to the air cavity. The thin-walled shell forming mold provided by the embodiment of the present application can improve the yield rate of the manufactured thin-walled shell.

The utility model provides an ear pus removing device, which belongs to the technical field of pus removing devices and comprises a sleeve, three groups of clamping plates are arranged at one end of the sleeve, knobs are respectively connected with one sides of the three groups of clamping plates through threads, suction pipes are arranged in the three groups of clamping plates, one end of a first water pipe is arranged at the other end of the sleeve, and a negative pressure component is arranged at the other end of the first water pipe. A first sliding groove is formed in the sleeve, a sliding rod is arranged in the first sliding groove, a spring is arranged between the sliding rod and the first sliding groove, a piston is arranged on one side of the sliding rod, a supporting seat is arranged on one side of the sleeve, and a storage assembly is arranged on the supporting seat; through the arrangement of the sliding rod and the piston, the suction force of the pus removing device can be controlled, the situation that the ear canal of a patient is broken due to suction, unnecessary pain and discomfort are caused, and the follow-up treatment difficulty is increased is avoided, through the arrangement of the storage assembly, cotton swabs are placed in the storage assembly, the operation steps of an operation can be reduced, the treatment time is shortened, and the treatment efficiency is improved. And the operation burden of medical staff is also reduced.

The utility model discloses an automatic switching edge grinding device of toughened glass, including the processing base that is square, be provided with glass bearing structure on the processing base, be equipped with the edge grinding mechanism in the position of glass bearing structure one side on the processing base, glass bearing structure includes the base, and the top surface of this base is provided with the installation groove, is provided with the bearing platform for bearing glass in the installation groove, and the circumference of bearing platform is provided with a plurality of limiting rods that are evenly distributed along its circumferential direction, the side wall of installation groove is concave and is equipped with a plurality of limiting grooves, and the number of limiting groove corresponds with limiting rod, and limiting groove penetrates the top of bearing platform upwards. The utility model discloses through the configuration of the limiting rod and limiting groove of bearing platform, plays the role of fixed bearing platform, and simultaneously, when needing to adjust the angle of toughened glass, only needs through telescopic link to make bearing platform rise first, rotates again, finally makes bearing platform drop and can realize.

The utility model discloses a rotation stopping device for a suction inlet of a water pump, and belongs to the field of water supply systems of pipeline pump sets. The rotation stopping device comprises an installation bottom plate welded to the position, corresponding to a water pump suction inlet, in the expansion water tank, and a through hole formed in the installation bottom plate and communicated with the water pump suction inlet. The eight flow guide plates are distributed on the side, away from the water pump suction inlet, of the mounting bottom plate in an annular array mode and welded to the mounting bottom plate, and the top anti-rotation plates are welded to the sides, away from the mounting bottom plate, of the eight flow guide plates. And the guide plate is a V-shaped metal plate bending piece. According to the rotation stopping device, the liquid level of a water pump inlet is lowered by arranging the mounting bottom plate, the through hole, the eight flow guide plates and the top rotation preventing plate, an original water pump suction inlet is divided into eight water inlet channels, liquid can be dispersed into the water pump more evenly, the overall suction force and the flow speed of the water pump suction inlet are effectively reduced, and the water pump efficiency is improved. Therefore, vortexes and bubbles generated due to too high flow speed can be reduced, and the operation stability of the water pump is improved.

The utility model discloses an automobile parts punching device, including base, the inside screw thread of base is provided with threaded tube, and threaded tube penetrates base, and still screw thread is installed with strong magnet in base. The base includes the screw thread seat, and the side end fixed connection of screw thread seat has the connecting block, and the fixed connection of connecting block back to screw thread seat one end has first screw thread shell, and strong magnet screw thread is installed in first screw thread shell, and threaded tube screw thread is installed in screw thread seat, and threaded tube penetrates screw thread seat. The lower end fixed connection of first screw thread shell has the skin piece, and the lower end of skin piece is provided with antiskid line. Threaded tube includes threaded tube body, and the base is pasted on target automobile parts, then adjusts the device position, makes the center of threaded tube to be located at the punching, and the drill bit of target handheld drill is inserted into threaded tube, and the drill bit is restrained at the drilling point through threaded tube, and the difficulty of operating handheld drill aiming at punching is reduced.

The utility model provides a textile cloth cleaning device which comprises a suction box and a penetrating box transversely penetrating through the suction box, a mounting shaft located above the penetrating box is further arranged in the suction box, and a driver for driving the mounting shaft to rotate is arranged outside the suction box. A plurality of attachment rods extending from one end of the mounting shaft to the other end of the mounting shaft are further fixedly arranged on the periphery of the mounting shaft, an exhaust pipe is further fixedly connected to the suction box, an exhaust fan is connected to the tail end of the exhaust pipe, and when the exhaust fan runs, airflow in the suction box enters the exhaust pipe after passing through the attachment rods; an inlet and a guide outlet which are located outside the suction box are formed in the two ends of the penetrating box respectively, an air outlet and an air inlet which are located in the suction box and located in the top face and the bottom face of the penetrating box respectively are further formed in the penetrating box, and an air inlet is further formed in the bottom face of the suction box; a filter box is further arranged on the suction box, and a filter plate is further arranged in the filter box in a drawing mode. The textile fabric suction device solves the problem that in the prior art, in the suction process of textile fabric, warp and weft are likely to be disordered or sucked into an exhaust fan from the lower portion.

The present application relates to oil and gas storage and transportation application field, specifically relates to a kind of centrifugal pump segmented filling pump device and filling pump method;Including centrifugal pump, filling pump valve, pump outlet cut-off valve, pump inlet valve, subsea valve and pump inlet intermediate check valve;The centrifugal pump one end is connected pump outlet pipe, the other end is connected pump inlet pipe, wherein pump outlet cut-off valve and filling pump valve are sequentially arranged on pump outlet pipe;The present application gradually fills pump inlet pipeline by using segmented dense medium liquid, air is gradually absorbed and replaced by liquid by the action of centrifugal pump, so as to realize the dense filling of space in pump shell, ensure that pump inlet pipeline forms segmented dense structure before starting, so that liquid can smoothly enter pump shell and be pumped to outlet through the working cavity of pump, effectively avoid the phenomenon of pumping empty when pump starts, ensure the normal flow of liquid.

The utility model discloses a dust suction port, fallen leaf collecting device and sweeper truck relates to urban cleaning technical field, including shell and suction port flashboard, the interior of shell is provided with a dust suction channel, the dust suction channel vertically extends upwards from shell bottom, the bottom of dust suction channel is provided with bottom opening, the side face of dust suction channel close to bottom is provided with suction port, and the suction port flashboard is provided with the bottom opening. The bottom opening is connected and communicated with the suction port, a suction port insertion plate is arranged at the suction port, the suction port insertion plate can move towards the suction port to cover the suction port and move away from the suction port to expose the suction port, and the size of the suction port can be changed through the shape and the structure of the suction port to prevent blockage; the dust collection effect of the fallen leaf collecting device using the dust collection opening and the sweeping machine is greatly improved.

The invention relates to the technical field of fruit picking, and provides a flexible picking end effector and a picking system using the same. Comprising a torsion device which is connected with a shell, the shell is connected with a supporting piece, and the supporting piece is connected with a flexible profiling film; a first cavity is formed among the torsion device, the shell and the supporting piece, and a second cavity is formed between the supporting piece and the flexible profiling film. A negative pressure generating device is arranged in the first cavity and is connected with the valve body in the second cavity; the valve body is communicated with the second cavity and the hard bionic suction cup located in the main profiling film body of the flexible profiling film. The device has the beneficial effects that only one negative pressure generating device is adopted, and through the structural design of the ventilation screw and the valve body, the quartz particles are made to adapt to the compacting process of the fruit appearance shape, and negative pressure generation between the suction cup and the fruit does not exist in sequence; the negative pressure between the fruits and the suction cup is completely formed at the same time, the picking efficiency is improved, and it is guaranteed that the fruits are not damaged.

The invention discloses a leakage protection circuit with automatic tripping upon power failure and delayed manual reset, comprising a power input end and a load end, wherein a controlled switch and a residual current transformer for detecting leakage signals are arranged in sequence between the power input end and the load end, a signal output end of the residual current transformer is connected to a leakage protection control chip U1, an output end of the leakage protection chip U1 is connected to a solenoid drive circuit and a delayed reset circuit, an output end of the solenoid drive circuit is connected to a solenoid L1 for controlling the on and off of the controlled switch, a power input end is connected to a power supply circuit and supplies power to the leakage protection control chip U1, the solenoid drive circuit, the delayed reset circuit and the solenoid L1 respectively, so that the solenoid is powered off when the leakage protection control chip latches and keeps outputting a power-off signal, and cannot be manually reset to connect the controlled switch to power on the load end, and the leakage protection control chip outputs a power-on signal after the delayed protection ends, so that the load end can be powered on only when the power-on signal is manually reset.

The invention relates to a long-life high-precision grinding wheel moving mechanism which comprises a grinding wheel box body, an upper inner grinding wheel is arranged in the upper space in the grinding wheel box body, the grinding wheel box body is sleeved with an upper outer grinding wheel, an inner plate is arranged on a bottom plate on the grinding wheel box body, a grinding wheel hole is formed in the middle of the inner plate, and an inclined hopper is arranged on the bottom face of the inner plate. A cylindrical sliding base is arranged in a hole in the center of the inner bottom wall of the inclined hopper, a cylindrical sliding sleeve is arranged in a cylindrical sliding base hole, a disc is arranged on the flange face of the cylindrical sliding sleeve, and an outer dustproof sleeve is arranged below the disc. A sliding pair, a screw transmission mechanism, a gear transmission mechanism and a guide mechanism are separately designed, and an adjusting nut is arranged on the lower end face of a gear nut, so that the axial clearance can be adjusted after a thread pair is abraded. The device has the effect of improving the transmission precision stability of the thread pair.

This utility model discloses a leaf collection vehicle, relating to the field of urban sanitation technology. The vehicle includes a vehicle body equipped with a negative pressure trash can, a leaf collection device, a leaf collection device fixing mechanism, and a sweeping device. The leaf collection device includes a suction port, which comprises a housing and a suction port insert. The housing has a suction channel extending vertically upwards from the bottom of the housing. The bottom of the suction channel has a bottom opening, and a suction port is located on the side of the suction channel near the bottom. The bottom opening connects to and is through the suction port. A suction port insert is located at the suction port, and the insert can move towards the suction port to cover it and move away from it to expose it. The suction port can change size using its shape and structure to prevent clogging. Using this leaf collection vehicle greatly improves the efficiency of sweeping up lightly littered objects such as leaves and branches.

The utility model relates to the field of sealing machines, and discloses an environment-friendly packaging bag sealing machine which comprises a base, supporting legs are fixedly connected to the upper surface of the base, a machining table is fixedly connected to the upper surfaces of the supporting legs, a breathable plate is fixedly connected to the interior of the machining table, and a purification box is fixedly connected to the lower surface of the machining table. The outer wall of the purifying box is fixedly connected with an air pump, the input end of the air pump is fixedly connected with a first exhaust pipe, the outer wall of the first exhaust pipe is fixedly connected to the interior of the purifying box, and the outer wall of the purifying box is fixedly connected with a connecting pipe. According to the device, the air pump is started, air in the purification box is pumped away through the air guide pipe, the intensity of pressure in the purification box is reduced, suction force is generated, the effect of absorbing gas for packaging the conveying belt is achieved through cooperation of the connecting pipe, the flow dividing pipe and the suction nozzle, and the gas is filtered and purified through the filter plate in the purification box.

The utility model discloses a workpiece automation burnishing frock of quick changeable, including frame, the upper portion fixed connection of frame has operating table, the inside slide of operating table has inserted magnet block, and the lower part of magnet block has the treading frame of movable sleeve, and the rear portion of treading frame is fixedly connected with operating table. Reset spring is established between operating table and treading frame, and the upper end of reset spring is fixedly connected with operating table, and the lower end of reset spring is fixedly connected with treading frame. Operating table includes the table body, places the workpiece of steel material quality on operating table, utilizes magnet block and holds the workpiece, makes workpiece keep on operating table, and treads treading frame downward, makes treading frame downward act on treading frame, and through treading frame and help lever act on magnet block, make magnet block downward and away from workpiece, reduce the suction of workpiece, take down workpiece, control suction through the mode of treading, and it is convenient and quick to replace workpiece.

The electromagnetic pressure valve comprises a shell, a sleeve, a coil, a movable iron core, a fixed iron core, a water inlet pipe and a water outlet pipe, the sleeve is installed in the shell, the coil is wound around the outer side of the sleeve, the movable iron core is arranged in the sleeve and can move in the axial direction of the sleeve, and the fixed iron core is arranged in the shell. The water inlet pipe and the water outlet pipe are respectively connected to two ends of the sleeve and are communicated through an inner cavity of the sleeve; the movable iron core and the fixed iron core attract each other by an electromagnetic field generated when current with preset magnitude is introduced into the coil, so that the movable iron core moves towards the water inlet pipe, and a water passing gap formed between the movable iron core and the water inlet pipe is reduced; when the coil is powered off, the movable iron core moves away from the water inlet pipe and resets. The electromagnetic pressure valve is applied to a heat purification all-in-one machine, when hot water of an instant heating body passes through the electromagnetic pressure valve, the electromagnetic pressure valve is electrified to increase the resistance of the movable iron core to the hot water and increase the water flow pressure of the instant heating body, so that the pressure intensity in the instant heating body is higher than normal pressure, and the heating temperature of the hot water is effectively increased.

This application discloses a device and method for detecting defects on the inner surface of high-strength steel, relating to the field of automatic detection. The device includes: a main control system, a composite electromagnetic detection module, and a lift-off adjustment mechanism; the main control system and the lift-off adjustment mechanism are electrically connected; the lift-off adjustment mechanism is mechanically connected to the composite electromagnetic detection module; in the composite electromagnetic detection module, both the magnetic flux leakage channel structure and the permeability channel structure are electrically connected to the mode switching and control unit, and the magnetic flux leakage channel structure and the permeability channel structure share a magnetizer; the lift-off adjustment mechanism adjusts the lift-off height of the magnetizer; the main control system parses the detection command and determines the detection mode based on the lift-off height; the mode switching and control unit activates the magnetic flux leakage channel structure or the permeability channel structure for detection based on the detection mode to obtain a detection signal. This application can maintain high sensitivity and high reliability in detecting defects on the inner surface of high-strength steel containers over a wider lift-off range, significantly improving the adaptability and comprehensive evaluation capability of coating-free grinding detection.

The utility model relates to a false twist texturing machine oiling yarn guide adjusting device and an oil groove combination assembly, the false twist texturing machine oiling yarn guide adjusting device comprises an air cylinder, a yarn guide supporting plate, a supporting shaft, an elastic piece, a fixing plate and a supporting seat, the yarn guide supporting plate and the fixing plate are connected in series through the supporting shaft, the elastic piece is arranged on the supporting shaft, and the supporting seat is arranged on the supporting seat. One end of an extension portion of the elastic piece abuts against the fixing plate, the other end of the extension portion of the elastic piece abuts against the yarn guide supporting plate, the action end of the air cylinder is connected with the lower portion of the yarn guide supporting plate, and the support is fixed to the front end of the yarn guide supporting plate. When doffing and creeling start, the electromagnetic valve controls the air cylinder to ventilate, the action end of the air cylinder is ejected out, the yarn guide supporting plate is driven to rotate clockwise around the supporting shaft, and therefore the yarn on the support is separated from the oiling wheel. Friction resistance of filaments in the creeling process is reduced, the automation level of equipment is improved, waste of oil is reduced, suction force needed by an automatic yarn suction device is reduced, energy consumption of an air compressor is reduced, and economic benefits are increased. And after creeling is finished, the electromagnetic valve is closed, the air cylinder releases pressure and deflates, the yarn guide supporting plate is reset under the action of the torsional spring, and the yarn on the support makes contact with the oiling wheel again.

This invention discloses a car hood sheet metal repair device, belonging to the field of sheet metal repair technology. Key technical features include: a worktable for fixing car sheet metal parts; a scanner for scanning the car sheet metal parts and determining the repair area; a robotic arm mounted on one side of the worktable for generating a grinding path based on the scanner data; a grinding device mounted at the working end of the robotic arm, including a grinding motor and a grinding head, the grinding motor driving the grinding head; a negative pressure suction device for generating a constant negative pressure airflow; and a dust suction device sleeved on the outside of the grinding head for negative pressure dust suction. The dust suction device includes a first constraint sleeve and a second constraint sleeve, with a gap between the two. This invention significantly improves repair accuracy and efficiency, reduces manual maintenance costs, and meets environmental protection requirements.

The present disclosure relates to the technical field of electronic component carriers, and specifically to a self-sorption box assembly, which comprises a box body, a sorption assembly and a gas extraction assembly, wherein a first mounting cavity is arranged in the box body; the sorption assembly comprises a self-sorption film and a plurality of support columns, the self-sorption film is arranged in the first mounting cavity and forms a gas suction space in the first mounting cavity, the plurality of support columns are arranged in the gas suction space at intervals to support the self-sorption film, and one side of the self-sorption film away from the support columns is used for adsorbing a to-be-sorbed component; the gas extraction assembly is communicated with the gas suction space through a connecting pipe, and when the gas extraction assembly extracts gas, the self-sorption film is partially embedded in the gap between the support columns.

The utility model discloses a dust collection device for property cleaning, which comprises a device main body, a conveying assembly is fixedly arranged in the device main body, a dustproof bag is fixedly arranged in the device main body, the right side of the dustproof bag is lapped with an isolation filter plate, and the surface of the isolation filter plate is fixedly connected with the inner wall of the device main body. According to the dust collection device for property cleaning, the telescopic assembly drives the moving seat to move to the position below the filter screen, the motor is started to drive the rotating column to rotate, the rotating column drives the cleaning brush to rotate, the filter screen is brushed and cleaned, and the dust collection device for property cleaning is convenient to use. And therefore, the purpose of automatically cleaning the filter screen is achieved, the situation that after the dust collection device is used for a long time, too much dust is likely to adhere to the filter screen at the exhaust position, and consequently the filter screen is blocked is prevented, and the situation that due to the fact that meshes are blocked, the suction force of the dust collection device is greatly reduced, and the cleaning effect on dust, sundries and chippings is reduced is avoided.

The utility model relates to the technical field of quartz sand screening, in particular to a dust falling device for quartz sand screening, which comprises a dust collecting component mounted at the upper end of a vibrating screen, the dust collecting component comprises a dust collecting cover fixedly covering the upper end of the vibrating screen, and a dust collecting pipe is fixedly mounted at the upper end of a discharge port of the vibrating screen. An annular pipe is fixedly installed on the outer side surface of the dust collecting cover, a plurality of dust collecting openings fixedly communicate with the outer side surface of the annular pipe at equal intervals, the filtering assembly is arranged on one side of the vibrating screen, and the discharging assembly is fixedly installed on the lower end surface of the filtering bin. The dust collecting pipes are arranged above the vibrating screen and above the discharging port of the vibrating screen, dust flying at the two positions is collected, dust flying caused by vibration during discharging of the discharging port is reduced, the dust is collected through the filter cartridge, the spiral blades rotate, the dust on the inner wall of the filter cartridge is scraped off, and then the dust is discharged through the discharging assembly. The permeability of the filter cartridge is kept, and the suction force at the dust collecting pipe is prevented from descending.

This invention relates to the field of water-sprinkler sweeper technology, and discloses a water-sprinkler sweeper with dynamic adjustment function of water and sewage storage space and its control method. It aims to solve the technical problem that existing water-sprinkler sweepers typically have fixed-volume clean water tanks and sewage tanks, causing vehicles to frequently interrupt operations to return for water or sewage replenishment, severely limiting the continuous working capacity of a single trip. This invention includes a vehicle body, a walking mechanism located below the vehicle body, and a sweeping assembly, a water-sprinkling assembly, a clean water tank, and a sewage tank located above the vehicle body. A movable separator is provided between the clean water tank and the sewage tank, and the separator is connected to an adjustment drive mechanism that drives its movement to change the volume ratio of the clean water tank and the sewage tank. This invention fully utilizes the total volume of the integrated tank body, avoiding forced operation interruptions due to one side of the tank filling or emptying first, significantly extending the effective sweeping mileage and time after a single filling and emptying, and improving operational efficiency.

The utility model relates to a special-shaped ceramic processing tool for water-jet guided laser, which belongs to the technical field of water-jet guided laser processing and comprises a vacuum cavity and a rotary pitching table. A plurality of adsorption areas and hollow areas are arranged on the vacuum cavity in a staggered manner, the adsorption surfaces of the adsorption areas are arranged in a coplanar manner, and a plurality of adsorption holes are uniformly formed in each adsorption area; the surfaces of the plurality of hollow areas are lower than the adsorption surface; a rubber ring is arranged around the periphery of the plurality of adsorption areas; the vacuum cavity adsorbs the special-shaped ceramic through a plurality of adsorption holes, and the hollowed-out area coincides with the to-be-machined area of the special-shaped ceramic; and the rotary pitching table drives the vacuum cavity to do rotary motion or pitching motion. Based on vacuum adsorption, the hollowed-out area is arranged outside the adsorption area, the hollowed-out area coincides with the to-be-machined area of the special-shaped ceramic, in the machining process of the water-guided laser, the machining track of the water-guided laser is located in the hollowed-out area all the time, and the adsorption performance of the special-shaped ceramic is guaranteed.

The invention relates to a vacuum cleaner and a vacuum cleaner system. The vacuum cleaner comprises a dust barrel; a suction unit that guides air to the inside of the dust tub; a suction motor generating a suction force to suck air through the suction portion; a cyclone unit that separates dust from the air by causing the air sucked in by the suction unit to flow as a cyclone; and a filter unit for filtering the air discharged from the cyclone unit. The filtering part comprises a filter main body which is arranged in the dust barrel and forms the cyclone flow along the periphery of the outer side of the filter main body; and a filter hole for guiding air into the filter main body. The air flowing into the inside of the filter main body through the filter holes flows into the filter main body in a state of being inclined in a reverse direction with respect to the advancing direction of the cyclone flow formed at the inlet side of the filter holes, so that hair can be prevented from being stuck in the filter holes.

The utility model provides a kind of drilling device for circuit board processing, it is related to circuit board drilling equipment technical field, including main drilling module, lower ring frame and upper vertical sliding rack, the lower part of main drilling module is provided with lower ring frame, upper vertical sliding rack is provided in the upper part of main drilling module, the inside circumference of lower ring frame is rotationally provided with transfer ring, the top annular array of transfer ring is provided with upper air deflector, the bottom annular array of transfer ring is provided with lower brush plate, lower ring frame side is communicated with side communication hose, transfer ring is in the middle of lower ring frame and side communication hose communication hole position, the bottom bristle of lower brush plate and lower ring frame bottom are flush setting. Lower brush plate pushes the scrap away from the side of side communication hose to the position close to side communication hose to collect, reduce the residue of scrap, solve the problem that scrap residue is more likely to appear on the side of remote negative pressure fan communication pipeline.

This invention discloses a method for reducing the moisture content of concentrate powder produced by disc filters. It is based on a dual-vacuum partitioning modification of a disc vacuum filter, dividing the dewatering zone of the filter into independently controlled adsorption and dewatering zones. Specifically, the method includes the following steps: A) Feeding and distributing: The concentrate slurry to be dewatered is uniformly fed onto the surface of the filter discs; B) Process partitioning: Along the rotation direction of the filter discs, the filtration working area is sequentially divided into an adsorption zone and a dewatering zone. This invention, by independently controlling the adsorption and dewatering zones of the disc vacuum filter, breaks through the limitations of traditional single vacuum levels. The moisture content of the concentrate powder is reduced by 3-5 percentage points compared to traditional single vacuum processes. Furthermore, the adsorption zone uses high negative pressure for rapid cake formation, shortening the cake formation time by more than 30%. This means that at the same disc filter speed, the effective dewatering time percentage increases, or the speed can be appropriately increased to achieve the same production capacity, thus improving the overall processing capacity.