31results about How to "Full suction" patented technology

The invention discloses a wall-hung thin type lampblack depurating machine, which is provided with flat cuboid-shaped shell, wherein a double-volute is arranged in the shell, and two isolated chambers of the double-volute share an air outlet passage on the top of the shell; a turbo-fan with a horizontal output shaft is arranged in the two isolated chambers of the double-volute respectively, and the front end of the output shaft of the turbo-fan extends out of the double-volute and is connected with at least one vertical rotary centrifugal filter screen plate; and the outside of the rotary centrifugal filter screen plate is provided with an annular oil guide ring, the bottom of the annular oil guide ring is provided with an oil leak opening, a fume flow distribution plate is arranged below the annular oil guide ring, an oil guide tank is arranged on the fume flow distribution plate, and the bottom of the shell is provided with an air inlet passage and an oil collection box. The wall-hung thin type lampblack depurating machine has ultra-high efficiency for holding up and collecting lampblack, can basically put an end to the pollution caused by the lampblack to the air, the shell and the external wall of a building, and has the characteristics of overall closure, simple structure, convenient cleaning, energy saving and noise reduction, large cooking space, safe running and long service life.

The invention discloses a high-efficiency ground slotting device. The device comprises a vehicle body; rolling wheels are arranged at the bottom of the vehicle body; a mobile rack is arranged in the vehicle body, the lower part of the mobile rack is fixedly connected with a crossbeam plate, and the right side of the crossbeam plate is in rotating connection with a grinding wheel; and a dust sucking cylinder is arranged between the grinding wheel and a slotting blade group. Slotting blades connected in an interlaced manner are arranged to crush concrete, so concrete slag can be conveniently collected; an industrial dust suction machine, a dust sucking cylinder and an outer guiding block are arranged to fully suck the concrete slag; and the grinding wheel is arranged to polish the inner wall of a groove body to make the slag fully crushed and sucked and guarantee the parallel and level of edges of the groove body, so a pipeline can be conveniently directly laid, the groove body can be molded once, and the slotting working efficiency is improved.

The invention discloses a separator for separating grass and trees from plastic films. The separator comprises a case, a screen drum, a spindle and a dust suction device, wherein the screen drum is axially and horizontally fixed in the case, a feed inlet is arranged at one end of the screen drum, a discharge outlet is arranged at the other end of the screen drum, the spindle is installed at the center of the screen drum in a rotating mode and driven by a spindle power device, the spindle is provided with a pushing screw blade section, a centrifugal scattering screw blade section and a discharging blade section, the pushing screw blade section and the discharging blade section correspond to the feed inlet and the discharge outlet respectively, the centrifugal scattering screw blade section is positioned between the pushing screw blade section and the discharging blade section, the dust suction device is communicated with the inner cavity of the case, an impurity collecting cavity is disposed at the bottom of the case, and an impurity discharge port is formed in the wall of the impurity collecting cavity. The separator can separate impurities in films, such as grass, trees and dust automatically and continuously, so that the separating efficiency of the impurities in agricultural film recovery is improved, and requirements for agricultural film recovery production lines are met.

The invention discloses a lever type piston extrusion cleanser bottle which comprises a bottle body and a spraying mechanism. The spraying mechanism comprises a sucking pipe. A fulcrum component of the spraying mechanism comprises a base fixed to the top end of the bottle body, spacers and a supporting column, and the spacers and the supporting column are located in the base. The bottom end of the supporting column is located in a cylindrical cavity and can slide in the cylindrical cavity up and down. The multiple spacers are arranged between the bottom end of the supporting column and the cavity bottom of the cylindrical cavity. A piston compression component comprises the sucking pipe, a piston, a connecting rod and a lever. The side wall of the part, stretching out of the top end of the bottle body, of the sucking pipe is connected with a spraying pipe used for spraying a cleaning solution. A reset spring is vertically arranged on the side, opposite to the supporting column, of the sucking pipe. The piston is located in the sucking pipe, and the top of the piston is hinged to the bottom end of the connecting rod. The top end of the connecting rod stretches out of an opening in the top end of the sucking pipe and then is hinged to the lever. The top, stretching out of the cylindrical cavity, of the supporting column and the top end of the reset spring are also hinged to the lever. According to the cleanser bottle, the situation that the spraying mechanism resets and loses efficacy can be prevented, and the reliability is improved.

The invention discloses a porous needle. The porous needle comprises a needle tube and a needle handle communicated with the porous needle. At least one hole is arranged in the tube wall of the needle tube; the distance from the hole, closest to the needle handle, to the needle handle is equal to the thickness of a penicillin bottle rubber plug. Utilizing the porous needle, the needle tube is inserted into the penicillin bottle rubber plug until the needle handle contacts with the outer surface of the rubber plug when medicine is dispensed; at that time, holes on the needle tube enter the inside of a penicillin bottle and at least one hole contacts with the rubber plug. Because of the inertia effect when a needle is thrusted and the tension effect when medicine liquid is in the needle body, agentia inside the penicillin bottle does not overflow from the hole in the tube wall. Liquid is injected into the penicillin bottle through the porous needle, and the agentia inside the penicillin bottle is mixed. In the suction process, the medicine liquid is concentrated in the upper part of the rubber plug because the penicillin bottle is placed inversely; finally the sucked medicine liquid is pulled away from the penicillin bottle through the hole located below the liquid level and the hole contacting with the rubber plug. The porous needle has the advantages of being simple in structure, convenient to manufacture, and being capable of fully sucking the medicine liquid in the penicillin bottle.

The invention discloses a copper material smelter harmful waste gas purifying device which comprises a harmful waste gas suction pipe. The harmful waste gas suction pipe is internally provided with a negative pressure generator. A platy gas distributing box is arranged at the bottom of the harmful waste gas suction pipe. A plurality of gas distribution and suction holes are evenly formed in the bottom of the platy gas distributing box. The negative pressure generator comprises an upper partition plate and a lower partition plate which sequentially divide the harmful waste gas suction pipe into an exhaust upper portion, a sucking and blowing middle portion and a gas suction lower portion from top to bottom. The exhaust upper portion is communicated with the atmosphere. The gas suction lower portion is provided with an activated carbon filter element. A piston capable of horizontally moving is arranged between the upper partition plate and the lower partition plate. A first check valve is arranged between an exhaust middle portion and the exhaust upper portion. A second check valve is arranged between a gas suction middle portion and the gas suction lower portion. A third check valve is arranged on the piston. Harmful and toxic organic waste gas can be sufficiently sucked and purified.

A dust collecting case provided on a cutting machine for cutting a target object includes an outer case member and an inner case member. The outer case member includes a bottom plate, a first side member extending from a peripheral edge of the bottom plate, and a suction port. The inner case member includes a second side member positioned inside the first side member, and an upper member provided between an upper portion of the first side member and an upper portion of the second side member such that the upper member closes from above a space surrounded by the first side member and the second side member. The second side member includes an inner peripheral surface that faces and surrounds an outer periphery of the target object. A gap is located in between an outer surface of the second side member and an inner surface of the first side member.

A dust collecting case provided on a cutting machine for cutting a target object includes an outer case member and an inner case member. The outer case member includes a bottom plate, a first side member extending from a peripheral edge of the bottom plate, and a suction port. The inner case member includes a second side member positioned inside the first side member, and an upper member provided between an upper portion of the first side member and an upper portion of the second side member such that the upper member closes from above a space surrounded by the first side member and the second side member. The second side member includes an inner peripheral surface that faces and surrounds an outer periphery of the target object. A gap is located in between an outer surface of the second side member and an inner surface of the first side member.

The invention relates to a device and a method for removing and collecting microparticles in aquaculture water. The device comprises a tank body for accommodating the aquaculture water, wherein a horizontal filter drum is arranged inside the tank body; a spacing distance is formed between the lower part of the filter drum and the bottom of the tank body; the filter drum can rotate under driving ofa power mechanism; a water inlet and a water outlet are formed in the side wall of the tank body; the water inlet is positioned outside a part corresponding to the end surface of the filter drum; thewater outlet is positioned inside the part corresponding to the end surface of the filter drum; sliding rails are arranged on the tank body; the sliding rails are arranged in the generatrix directionof the filter drum; a dirt sucking device capable of sliding along the sliding rails is arranged thereon; a set spacing distance is formed between a suction port of the dirt sucking device and the filter drum. The particle removing treatment capacity is high, and the energy consumption is low; backflushing is not required, and in the treatment process, a water resource is not consumed; manual maintenance is not required, and particle discharge is accurate; the particles collected after removal are substantially free of water and can be recycled.

The invention discloses a cleaner packing bottle comprising a bottle body containing cleaning liquid and a spraying mechanism for spraying the cleaning liquid out through pressing. The spraying mechanism comprises a suction pipe for directly sucking the cleaning liquid, and the inlet end of the suction pipe is located in the cleaning liquid in the bottle body. The top end of the suction pipe extends out of the top of the bottle body, and the extension portion is in a funnel shape. A large end opening of the extension portion is upward, and a small end opening of the extension portion is blocked by a circular plate. A cover plate is hinged to one side of the end of the large end opening, a connecting column is hinged to the bottom of the side, directly facing the large end opening, of the cover plate, and the side directly facing the large end opening can be rotated into the large end opening. After downwards penetrating through a via hole in the circle center of the circular plate, a steel wire connected with the connecting column downwards extends along the interior of the suction pipe and is connected with the upper end of a piston, the piston is located at the inlet end of the suction pipe, and a spraying pipe is connected to the side wall, above the piston, of the suction pipe. The spraying pipe upwards penetrates through the top end of the bottle body and extends out of the bottle body, and the lower end of the piston and a fixedly-arranged spring are connected. According to the cleaner packing bottle, invalidation of resetting of the spraying mechanism can be prevented, and the reliability is improved.

The invention discloses a separator for separating grass and trees from plastic films. The separator comprises a case, a screen drum, a spindle and a dust suction device, wherein the screen drum is axially and horizontally fixed in the case, a feed inlet is arranged at one end of the screen drum, a discharge outlet is arranged at the other end of the screen drum, the spindle is installed at the center of the screen drum in a rotating mode and driven by a spindle power device, the spindle is provided with a pushing screw blade section, a centrifugal scattering screw blade section and a discharging blade section, the pushing screw blade section and the discharging blade section correspond to the feed inlet and the discharge outlet respectively, the centrifugal scattering screw blade section is positioned between the pushing screw blade section and the discharging blade section, the dust suction device is communicated with the inner cavity of the case, an impurity collecting cavity is disposed at the bottom of the case, and an impurity discharge port is formed in the wall of the impurity collecting cavity. The separator can separate impurities in films, such as grass, trees and dust automatically and continuously, so that the separating efficiency of the impurities in agricultural film recovery is improved, and requirements for agricultural film recovery production lines are met.

The invention discloses a sputum aspirator with a built-in tracheostomy sleeve for severe surgery, and relates to the technical field of sputum aspiration equipment. The sputum aspirator comprises a cannula assembly and a sputum aspiration assembly, the cannula assembly comprises a tracheal cannula, and a guide support is arranged in the tracheal cannula. The sputum suction assembly comprises a suction pipe and a shaped metal guide wire. A plurality of sputum suction holes are uniformly formed in one side of the bent part of the suction pipe; the other side, opposite to the sputum suction hole, of the bent part of the suction pipe is of a corrugated structure; the two ends of the suction pipe communicate with a feeding unit and a recycling unit correspondingly. The trachea cannula has the advantages that the suction tube is suspended in the respiratory tract without affecting ventilation balance after being inserted into the respiratory tract through the metal guide wire and the trachea cannula, so that the suction tube can be retained for a long time, repeated intubation is avoided, sputum suction efficiency is improved, negative pressure scratching to the respiratory tract is avoided due to the micropore design of the sputum suction holes, and the sputum suction effect is good. And the diluent flows along the suction tube to prevent sputum from blocking the sputum suction hole, so that the use is smoother.

The invention discloses a near-suction type smoke purifier, comprising a flat oblong housing, wherein the inner part of the housing is provided with a double scroll casing, two isolated chambers of the double scroll casing share an air outlet at the back of the housing; the two isolated chambers of the double scroll casing are internally and respectively provided with a turbofan with an output shaft in vertical state, the lower end of the output shaft of the turbofan extends outside the double scroll casing and is connected with at least one rotary centrifugal filter screen disk in horizontalstate; a equalizing mesh enclosure is installed outside the rotary centrifugal filter screen disk, the bottom of the housing is provided with an oil guide board and an air inlet, and the lower end ofthe oil guide board is provided with an oil collection box. The smoke purifier has high efficiency of intercepting and collecting oil smoke and can fundamentally avoid the pollution of oil smoke for air as well as internal wall of the housing and external wall of the building, thereby having convenient cleaning, energy-saving and noise reduction, no heat energy and cooking space loss, safe and reliable operation, and long service life. The smoke purifier is applied to being mounted above a hearth at the cantilever platform window of a kitchen.

The invention discloses an extra-high-voltage cable stress cone jacking device, and relates to the technical field of high-voltage cable stress cones, the extra-high-voltage cable stress cone jacking device comprises a stress cone body, a base is arranged below the stress cone body, a clamping mechanism is arranged above the base of the stress cone body, and a dust collection mechanism is arranged on one side of the clamping mechanism. The clamping mechanism comprises connecting blocks, sliding rods and clamping strips, the connecting blocks are arranged on the two sides of the stress cone body, the sliding rods are fixedly installed on the outer walls of one sides of the connecting blocks, and the outer walls of the sliding rods are movably connected with the inner wall of the base. Under the interaction of a pulling plate, a connecting block, a sliding rod, clamping strips, a first spring, an L-shaped plate, an L-shaped block, a threaded rod, a clamping block and a springback assembly, a stress cone body is fixed through the springback assembly on the clamping strips, meanwhile, a rotary knob is rotated to drive the threaded rod to rotate, the threaded rod drives the clamping block on the sliding plate to be clamped into a clamping groove, the two clamping strips are locked, and therefore the stress cone body is fixed. And the fixing is convenient.

The invention discloses a cleaning agent bottle. The cleaning agent bottle comprises a bottle body for holding cleaning liquid, and a spraying mechanism for pressing to spray the cleaning liquid; the spraying mechanism comprises a sucking pipe for directly sucking the cleaning liquid; an inlet end of the sucking pipe is positioned in the cleaning liquid in the bottle body; the inlet end is positioned at the bottom of the bottle body, and is connected with a sucker head of a sprinkler structure; the sucker head is in a lotus seedpod shape, and the large end surface right faces the bottle bottom without making contact with the bottle bottom; multiple drainage channels for enabling the cleaning liquid to flow in are formed in the sucker head; the diameters of the drainage channels are smaller than the inner diameter of the sucking pipe; and the drainage channels communicate with the inlet end of the sucking pipe. The cleaning agent bottle can effectively prevent blockage of the cleaning liquid in pressurized spraying, and fully extracts away residual cleaning liquid.

According to the acid absorbing device for cleaning the surface of the battery, the battery is conveyed through the conveying belt, the lifting mechanism is arranged to drive the material baffle to descend, so that the material baffle and the auxiliary baffle are matched to limit the battery, and after limiting is completed, the acid absorbing nozzle is adopted to absorb acid on the surface of the battery; the sucked battery enters the acid collecting box through the feeding hose to be collected, and the lifting mechanism drives the material blocking plate to ascend after collection is completed, so that the battery subjected to acid suction is conveyed again; the lifting mechanism is adopted to control the material blocking plate to ascend or descend, so that acid absorption is achieved after the battery is blocked, and the surface cleanliness of the battery after acid absorption is greatly improved.

The invention discloses a wall-hung thin type lampblack depurating machine, which is provided with flat cuboid-shaped shell, wherein a double-volute is arranged in the shell, and two isolated chambers of the double-volute share an air outlet passage on the top of the shell; a turbo-fan with a horizontal output shaft is arranged in the two isolated chambers of the double-volute respectively, and the front end of the output shaft of the turbo-fan extends out of the double-volute and is connected with at least one vertical rotary centrifugal filter screen plate; and the outside of the rotary centrifugal filter screen plate is provided with an annular oil guide ring, the bottom of the annular oil guide ring is provided with an oil leak opening, a fume flow distribution plate is arranged belowthe annular oil guide ring, an oil guide tank is arranged on the fume flow distribution plate, and the bottom of the shell is provided with an air inlet passage and an oil collection box. The wall-hung thin type lampblack depurating machine has ultra-high efficiency for holding up and collecting lampblack, can basically put an end to the pollution caused by the lampblack to the air, the shell andthe external wall of a building, and has the characteristics of overall closure, simple structure, convenient cleaning, energy saving and noise reduction, large cooking space, safe running and long service life.

The dustproof, shockproof and moistureproof permanent magnet direct-current motor comprises a permanent magnet direct-current motor body, a mounting seat is mounted on the outer wall of the bottom end of the permanent magnet direct-current motor body, mounting screw holes are formed in the outer walls of the four corners of the top end of the mounting seat, and a shockproof mechanism is arranged on the inner wall between the permanent magnet direct-current motor body and the mounting seat; a driving turbine is mounted on the outer wall of the top end of the permanent-magnet direct-current motor; a rotating shaft of the driving turbine is coaxially connected with a driving shaft of the permanent-magnet direct-current motor; according to the dust removal device, a motor work driving shaft rotates to drive a driving turbine to work, the driving turbine sucks air in the bottom tank through an air suction pipe, dust in external environment air is filtered through a filter screen arranged on the bottom tank, and the filtered air enters the bottom tank and is mixed with an internal drying block; and wet water vapor in the air is absorbed and eliminated, so that the dried and dedusted air is input into the permanent magnet direct-current motor, and the dustproof and moistureproof effects of the permanent magnet direct-current motor are realized.

The invention provides a smoke collecting device and a range hood, and relates to the technical field of kitchen supplies. The smoke collecting device comprises a smoke collecting cover. A smoke inletand a smoke outlet are formed in the smoke collecting cover. An oil filtering net is arranged at the position of the smoke inlet and provided with a loosened area and a dense area. The ventilation degree of the dense area is lower than that of the loosened area. The loosened area comprises a left filtering area and a right filtering area. The left filtering area corresponds to a left furnace headof a cooking bench. The right filtering area corresponds to a right furnace head of the cooking bench. The range hood comprises a fan outer cover and the smoke collecting device. The fan outer coveris connected to the smoke collecting cover of the smoke collecting device. Due to the arrangement of the loosened area and dense area of the oil filtering net of the smoke collecting device, negativepressure in the smoke collecting cover can be distributed to correspond to the left furnace head and right furnace head on the cooking bench to a higher extent, so that the smoke purifying effect of the range hood can be improved.

The invention discloses an anti-deformation wood board vacuum drying box. The anti-deformation wood board vacuum drying box comprises a base, wherein the upper end of the base is fixedly connected with a drying box, the inner walls of the upper and lower opposite sides of the drying box are connected with the same reciprocating screw rod in a rotating mode through ball bearings, the upper end of the drying box is fixedly connected with a first motor corresponding to the reciprocating screw rod, the output shaft at the lower end of the first motor penetrates through the upper end of the dryingbox through a through hole and is fixedly connected with the upper end of the reciprocating screw rod, the rod wall of the reciprocating screw rod is in threaded connection with a moving block, one side of the moving block is fixedly connected with a suction hood, an air outlet of the suction hood communicates with the outside of the drying box through a hose, the base is of a hollow structure, anopening is formed in the bottom of the base, and a supporting plate is fixedly connected to the inner wall of the base. According to the drying box, comprehensive suction can be carried out in the drying box, the working efficiency is improved, and the movement of the drying box can be facilitated.

The invention discloses a gas particulate matter removal device which specifically comprises a base, a protection device installed at the bottom of an inner cavity of a water-soluble box, an adjusting device installed at the top of the protection device and a separation device installed on the inner surface of the protection device. The device comprises a U-shaped pipe body, arc-shaped flow guide pipes installed on the two sides of the outer surface of the U-shaped pipe body, a small water pump installed in the middles of the arc-shaped flow guide pipes, a spherical air suction machine installed at the low end of the U-shaped pipe body, and an air sealing device installed at the high end of the U-shaped pipe body. Through the arrangement of the arc-shaped flow guide pipe, downstream and countercurrent flushing can be performed on gas by proper water flow, and meanwhile, the countercurrent water flow and downstream water flow are mutually impacted by the removal pipe of the U-shaped pipe body, so that a water tent is formed to cut off and precipitate particles flushed by the downstream water flow and the countercurrent water flow, and the particles are prevented from being adhered to the interior of an equipment component.

The invention relates to a dustproof, shockproof and moistureproof permanent magnet direct current motor, comprising a permanent magnet direct current motor, a mounting seat is installed on the bottom outer wall of the permanent magnet direct current motor, and mounting screw holes are provided on the top four corner outer walls of the mounting seat, An anti-vibration mechanism is arranged on the inner wall between the permanent magnet DC motor and the mounting seat, and an active turbine is installed on the top outer wall of the permanent magnet DC motor, and the rotating shaft of the active turbine is coaxially connected with the drive shaft of the permanent magnet DC motor; The rotation of the working drive shaft will drive the active turbine to work. The active turbine sucks air in the bottom tank through the suction pipe, and filters the dust in the external ambient air through the filter screen set on the bottom tank, and the filtered air enters the bottom tank By mixing with the internal drying block, the moisture vapor in the air is absorbed and eliminated, so that the dry and dust-removed air is input into the permanent magnet DC motor, and the permanent magnet DC motor is dust-proof and moisture-proof.

The otitis media fester suction device comprises a lifting assembly, a partition plate, a clamping assembly, a moving assembly, an adjusting assembly, a fester suction assembly, a sliding assembly and an expansion assembly, the bottom of the partition plate is welded to one side of the lifting assembly, and the clamping assembly is welded to one side of the top of a blocking frame; a fourth motor, a third motor, a second motor and a fifth motor are used for driving, the angle, the left-right position, the height and the front-back position of the liquid pumping assembly are adjusted, it is guaranteed that the movable area of the liquid pumping assembly is wider, the liquid pumping assembly can suck out pus in the ears of the otitis media patient more thoroughly, and the device is higher in automation degree and more convenient to use. The head of the patient is clamped and fixed through the clamping assembly and the expansion assembly, the ears of the patient are opened and closed, the head is prevented from shaking, the situation that the ears of the patient are injured by a needle head is avoided, and the safety of the device in use is improved.

The invention relates to an endoscopic ultrasonography puncture needle vacuum extractor device with quantitative control negative pressure. The vacuum extractor device comprises a push-pull rod, a piston, an extractor body, a fixing joint and a connection joint; the fixing joint is arranged at one upper end of the extractor body of which the other end is provided with the connection joint; the connection joint is provided with a one-way valve; the extractor body is marked with a calibrated scale; the piston is fixedly connected with one end of the push-pull rod of which the other end is fixedly connected with a handle; the push-pull rod is provided with a limiting lug; the fixing joint comprises a sleeve, a side wing, a connection hole and a limiting clamping slot matched with the limiting lug on the push-pull rod. The endoscopic ultrasonography puncture needle vacuum extractor device with the quantitative control negative pressure has the advantages that the size of negative pressure can be quantitatively controlled, the negative pressure of different sizes can be used for the puncture needle to extract different focus tissues to enable the focus tissues to be fully extracted, incomplete extracting due to overlarge or oversmall negative pressure is avoided, operation difficulty is reduced, operation is simple and a puncture needle is stable in angle and depth.

The invention discloses a high-strength material, an auxiliary walking device made of the high-strength material, production equipment and a production method. The high-strength material is prepared from ABS resin, polycarbonate, carbon fiber powder, asphalt resin, a stabilizer and an antioxidant. The auxiliary walking device comprises a pedal plate, wrist supporting rods, shank supporting rods with the adjustable height and thigh supporting rods with the adjustable height. The production equipment comprises a hot melting mechanism, a dust falling mechanism, an injection molding mechanism, a suction mechanism, a batching mechanism, a molding mechanism and a refrigeration water machine. The method is a working method of the production equipment. The auxiliary walking device is flexible to adjust, and a user can selectively adjust the auxiliary walking device according to the thickness of the legs and the use comfort condition. The device realizes integrated production of hot melting, injection molding and molding, is good in cooling effect, and realizes energy conservation and consumption reduction.

The invention relates to the technical field of copper-aluminum composite bar welding, and discloses a clamping and welding device for copper-aluminum composite bar production. A worktable is included, two supporting plates are fixedly mounted at the top of the worktable, a top plate is fixedly mounted at the tops of the two supporting plates, a fixing frame is fixedly mounted at the top of the top plate, and a through groove is formed in the top of the top plate. A clamping piece is arranged below the through groove, the top end of the clamping piece is fixed to the bottom of the top plate, a welding device is arranged on the clamping piece, a cable of the welding device penetrates through the through groove and the fixing frame to be connected with external electrical equipment, an extension spring is fixed between the top of the welding device and the fixing frame, and a rotating rod is rotationally connected between the side walls of the two supporting plates. The clamping and welding device solves the problems that existing copper-aluminum composite bar welding adopts manual welding, the stability is poor during welding, displacement is prone to occurring, the welding precision is reduced, the product quality is affected, and meanwhile the body health of workers is affected.

The invention discloses a copper material smelter harmful waste gas purifying device which comprises a harmful waste gas suction pipe. The harmful waste gas suction pipe is internally provided with a negative pressure generator. A platy gas distributing box is arranged at the bottom of the harmful waste gas suction pipe. A plurality of gas distribution and suction holes are evenly formed in the bottom of the platy gas distributing box. The negative pressure generator comprises an upper partition plate and a lower partition plate which sequentially divide the harmful waste gas suction pipe into an exhaust upper portion, a sucking and blowing middle portion and a gas suction lower portion from top to bottom. The exhaust upper portion is communicated with the atmosphere. The gas suction lower portion is provided with an activated carbon filter element. A piston capable of horizontally moving is arranged between the upper partition plate and the lower partition plate. A first check valve is arranged between an exhaust middle portion and the exhaust upper portion. A second check valve is arranged between a gas suction middle portion and the gas suction lower portion. A third check valve is arranged on the piston. Harmful and toxic organic waste gas can be sufficiently sucked and purified.

The invention relates to the technical field of poultry breeding house ventilation, and discloses an intelligent ventilation device for a breeding house for livestock breeding. The intelligent ventilation device for the breeding house for livestock breeding comprises a blowing mechanism and an air draft mechanism, wherein the blowing mechanism comprises a first fixing frame and two blowing fans fixed onto the first fixing frame; the air draft mechanism comprises multiple second fixing frames, a transverse pipe and an airflow processing component; a motor is fixed to the upper end of the side wall of each second fixing frame; an output shaft of each motor penetrates through the side wall of the corresponding second fixing frame and is fixedly provided with a reel; a sliding plate is arranged on the inner side wall of each second fixing frame in an up-down sliding mode; a pull rope wound around each reel is fixed to the top end of the corresponding sliding plate; a draught hood is fixed to the side wall of each sliding plate; fixed draft fans penetrate through the side walls, back on to the second fixing frames, of the draught hoods; and the top end of each draught hood is communicated with a telescopic hose. The intelligent ventilation device for the breeding house for livestock breeding provided by the invention solves the problems that an existing poultry breeding house is incomplete in ventilation, heavy in moisture and unpleasant in smell, and poultry are prone to illness and infection.

The invention relates to thrombus aspiration device, which comprises a catheter assembly and a guide wire assembly, and the catheter assembly comprises an outer catheter, an inner catheter, a supporting net and a catheter handle. The guide wire assembly comprises an outer guide wire, an inner guide wire, a net basket and a guide wire handle. According to the using method of the thrombus aspirationdevice, the catheter assembly slowly penetrates into a blood vessel, the supporting net reaches the thrombus in the blood vessel, and a catheter push handle is pushed to start the supporting net. Then the guide wire assembly slowly penetrates into a catheter inner core from a guide wire interface till a soft head penetrates through thrombus, the net basket integrally penetrates through thrombus and reaches the other side of thrombus, and then the guide wire push handle is pushed to start the net basket. Finally, the guide wire assembly is slowly pulled towards the outside of the catheter assembly, the net basket drives the thrombus to move towards the supporting net, and at the moment, the thrombus is sucked outwards through an injector to be sucked into the catheter inner core and then enters the injector.