79results about How to "Achieve suction" patented technology

The invention discloses a revolving bed, which comprises a revolving bed layer, a liquid phase distribution pipe, a gaseous phase inlet and a gaseous phase outlet, a liquid phase inlet and a liquid phase outlet, a shell, a composite impeller, a mud baffle ring and a mud collection box. Two ends of the shell are provided with the gaseous phase inlet and the gaseous phase outlet respectively; the liquid phase distribution pipe has a cylindrical structure, of which the pipe wall is provided with liquid distribution holes; the liquid phase distribution pipe is both used as a rotating shaft of the revolving bed layer and the composite impeller; the composite impeller is arranged at a position close to the gaseous phase inlet; the mud baffle ring has an annular structure, which is close to the shell and fixed between the revolving bed layer and the composite impeller; the mud collection box is arranged at the bottom of the shell corresponding to the composite impeller; the liquid phase inlet is connected with the liquid phase distribution pipe through a revolving joint; and the liquid phase outlet is arranged at the bottom of the shell. The composite impeller removes the micro solid particles in a gaseous phase so as to realize the pretreatment on the gaseous phase and prevent the revolving bed layer from scaling. The revolving bed is applicable to gaseous phase and liquid phase mass transfer and reaction, particularly the gaseous phase and liquid phase mass transfer and reaction with micro solid particles.

The invention provides an adjustable vacuum sucker device for assembling and adjusting a lens of a photoetching machine and relates to the technical field of the manufacturing, assembly and adjustment of projection objective lens of deep ultraviolet photoetching machines. By the adjustable vacuum sucker device, the problem that lenses, lens barrels and lens frames of different dimensions cannot be reliably absorbed and transported in the process of processing and assembling photoetching projection objective lenses is solved. The adjustable vacuum sucker device comprises an adaptive joint, an upper cover, a shell, a worm wheel, a worm screw, an adjusting handle, shift pins, a connecting rod and rubber suction nozzles. The three shift pins which are circumferentially and uniformly distributed are driven to rotate through the meshing driving of the worm wheel and the worm screw; and the shift pins shift the connecting rod to make the centrosymmetrical three rubber suction nozzles synchronously moved from the center to the periphery. The sucker device has a simple structure, steplessly adjustable suction ranges, large adjustment ranges and capability of self locking, and the rubber suction nozzles do not damage the surfaces of sucked workpieces. The sucker device can be used for sucking optics lenses and the suction of parts such as the lens frames and the like with annular end faces, has a simple structure, can be used for nondestructive clamping, is continuously adjustable, and can simultaneously suck the lenses and the lens frames.

A nozzle for a dust collecting machine, especially a nozzle for a hard floor is provided with a nozzle head part (4) placed on a floor and a nozzle main body (5) for connecting the part 4 to the dust-collecting machine. A connection short pipe (6) is formed at the main body (5), the whole nozzle (2) can be moved by traveling wheels (10) or a sliding surface and a suction duct (7) extended through the main body (5) from the pipe (6) opening at the part (4) is provided. In order to develop the nozzle of the dust collecting machine of a kind of topic in an advantageous method so as to attain, e.g., the improved suction of the peripheral part like the place along the core print and improved approachability to the corner part and the recess, the part (4) is made rotatable with respect to the main body (5).

The invention provides a reservoir underwater walking sand suction and discharge device. The device comprises a working ship, a water pump, an air pump, a windlass and a positioning system arranged on the working ship, and a porous sand suction disc arranged on a silting bed surface of the bottom of a reservoir. An annular air cavity is formed in the porous sand suction disc; a sand punching hole and a sand suction hole are formed in the porous sand suction disc; the water pump is communicated with the sand punching hole through a water charging pipe; the sand suction hole is connected into a dam sand discharge hole through a sand conveying pipe; the air pump is communicated with the annular air cavity through an inflation pipe; and the windlass is connected with the porous sand suction disc through a traction steel rope. The device is arranged in a reservoir area; high-pressure water is injected in the sand punching hole of the porous sand suction disc through the water pump for dispersing and disturbing silted sediments of the reservoir; a high-concentration water and sand mixture is sucked through the sand suction hole of the porous sand suction disc and the sand conveying pipe for realizing efficient dam passing of the silted sediments of the reservoir; the dispersion, the disturbance and the suction of the silted sediments at the bottom of the reservoir can be synchronously realized; high-concentration muddy water is easy to form; the water consumption is low; and the sand sucking and desilting efficiency is high.

The invention belongs to the field of building processing, and particularly discloses processing equipment for an aluminum panel for a light-weight aluminum panel curtain wall. A working table is arranged on a rack; a fixing mechanism for fixing the aluminum panel is arranged on the working table; a polishing mechanism is arranged on the rack and comprises a sliding plate slidably connected onto the rack; an installation base is slidably connected onto the sliding plate; a rotary shaft is rotatably connected onto the installation base; a polishing roller is in spline connection onto the rotaryshaft; an installation plate is fixed to the end part of the rotary shaft; a pressure sensor is arranged on the surface of one side, close to the polishing mechanism, of the working table; a controller in signal connection with the pressure sensor is further arranged; the input end of the controller is used for receiving a pressure signal of the pressure sensor; and the output end of the controller controls the sliding speed of the installation base driven by a second drive piece and the sliding frequency of the polishing roller driven by a fourth drive piece. By adopting the scheme of the invention, the problem of lower manual polishing efficiency can be solved.

The invention discloses a slurry reduction treatment system. The system consists of a slag slurry pumping device, a mud removal purification device and a chemical agent treatment device which are sequentially connected, and is characterized in that the mud removal purification device comprises a slurry storage tank, a double-layer screen arranged above the slurry storage tank, a main unit slag slurry pump, a cyclone, a middle storage tank and a first slurry tank, wherein the double-layer screen consists of a double-layer screen coarse screening layer at the lower part and a double-layer screen fine screening layer at the upper part; a feed opening of the mud removal purification device is positioned above the double-layer screen coarse screening layer; the slurry storage tank is connected to the cyclone through the main unit slag slurry pump; an overflow opening of the cyclone is communicated with the middle storage tank; an underflow opening of the cyclone is positioned above the double-layer screen fine screening layer; a slurry outlet of the middle storage tank is communicated with the first slurry tank. According to the system, slurry and slag can be effectively separated, the slurry can be reutilized, mud-water separation treatment can also be performed on the slurry by virtue of a chemical agent and a centrifugation method, and moreover, separation effects are ensured.

The invention discloses a double-tank groove etching machine. The double-tank groove etching machine comprises a frame, wherein the frame is provided with an acid washing tank and a water washing tank, wherein a conveying device is arranged between the acid washing tank and the water washing tank; a rotating basket is movably connected to the conveying device; the conveying device can be used for feeding the rotating basket into the acid washing tank to be etched and feeding the rotating basket into the water washing tank to be cleaned; the rotating basket rotates along axes of the rotating basket; and the conveying device is connected with a power output device through a transmission device; the power output device is connected with a PLC (Programmable Logic Controller) through a circuit; and the PLC is connected with the power output device to control the work of the power output device. By adopting the double-tank groove etching machine, the problems of non-uniform etching surface, low large-area corrosion speed and incomplete cleaning can be solved.

The invention relates to a valve assembly, comprising a valve (4) which is associated with a gas conduit (8), has a valve disc (6) and a valve stem (7) supporting said valve disc and is provided with a cooling device. In said valve assembly, a simple design, high functional reliability and a good energy balance can be achieved by using a gaseous cooling medium or a cooling medium which consists at least partially of components that can be converted into a gaseous state. The cooling medium is discharged as gas into a gas conduit (8) via at least one outlet chamber (17), and for this purpose each discharge duct (19) originating from the outlet chamber (17) opens into a gas conduit (8).

The invention discloses a disposable sterile particulate-retaining syringe, which comprises a barrel, a plunger, a needle holder and a filter, the plunger is arranged in the barrel, the needle holder is arranged on one side of the front end of the barrel and is used for holding a needle, the barrel is communicated with the needle holder through a liquid outlet, and the filter is provided with a filter membrane, which is attached on the liquid outlet and can be closed toward the front end and opened toward the rear end. According to the structure design, the thickened interlayer-wrapped round unilaterally hung filter is only arranged in the tip of a conventional and ordinary syringe, the syringe can be automatically opened and closed and suck dissolved medicine during the microflow of the liquid, and can retain particulates in the injection in one step, so that particulates which are 0.45Mu m or bigger cannot be produced in the discharged liquid any more, and thereby the safety of injection is guaranteed.

A holding body includes a fastening layer which has a fastening surface configured to fasten a flexible grinding device. The fastening layer includes an air- and dust-permeable material and is substantially full-surface. The fastening layer includes a textile material. The holding body also includes a supporting body which has a supporting surface configured to support a holding surface of the fastening layer. The supporting body is air- and dust-permeable and includes an open-cell foam. A grinding system includes such a holding body and such a flexible grinding device.

The invention discloses a road surface accumulated water cleaning device and a road surface accumulated water cleaning vehicle, belongs to the technical field of municipal environmental sanitation, and aims to solve the problems of low road surface accumulated water cleaning efficiency and poor effect in the prior art. The road surface accumulated water cleaning device comprises a water diversion mechanism, a water pumping mechanism, a water storage mechanism, an adjusting mechanism and a sweeping mechanism, the water diversion mechanism is used for guiding road surface accumulated water to the water pumping mechanism, the water pumping mechanism is connected with the water storage mechanism, and the adjusting mechanism is arranged below the water pumping mechanism and used for adjusting the height of the water pumping opening of the water pumping mechanism. The sweeping mechanism is arranged behind the water pumping mechanism and used for sweeping and pumping ground water which cannot be pumped by the water pumping mechanism; the device is simple in structure, convenient to use and capable of rapidly cleaning accumulated water on the pavement. Meanwhile, the invention provides a road surface accumulated water cleaning vehicle applying the road surface accumulated water cleaning device.

The invention discloses a green battery shell grinding device, and belongs to the field of battery processing. The green battery shell grinding device comprises a base, a workpiece clamp, a lifting plate, a grinding mechanism and two first rotating shafts rotationally connected to the lifting plate, wherein an air spraying mechanism and a liquid spraying mechanism each comprise a shell, an arc-shaped through groove is formed in each shell, and a second rotating shaft is rotationally connected to the center of each shell; a plurality of blades are fixedly connected to the outer surface of eachsecond rotating shaft, a first friction disc is connected to the bottom of each first rotating shaft, a second friction disc is connected to the upper end of a supporting rod, and air spraying head isfixedly connected to the end, far away from the corresponding shell, of an air outlet pipe; and a liquid inlet pipe and a liquid spraying pipe are fixedly connected to the shell of the liquid spraying mechanism, and a liquid spraying head is fixedly connected to the end, away from the corresponding shell, of the liquid spraying pipe. and when the grinding mechanism conducts grinding, scraps on aworkpiece are removed through the air spraying mechanism, residues or dust can be blown away through the air spraying head, and grinding liquid can be sprayed through the liquid spraying mechanism when the workpiece is ground.

The invention relates to a water injection device of an internal combustion engine, comprising a water tank (5) for storing water, a pump (3) for pumping the water, said pump (3) being arranged higherthan the water tank (5) and being connected to the water tank via a first line (7), a water injection valve (6) for injecting water, said valve being connected to the pump (3) via a second line (8),a drive (4) for driving the pump (3), and a control unit (10) which is designed to open the water injection valve (6) in order to suction water out of the water tank (5) to the pump (3) using a vacuumpresent in front of the water injection valve (6) when the lines and the pump are empty.

The invention relates to the field of building materials, in particular to a building material integrated forming machine tool capable of achieving uniform coating. The invention solves the technical problems that the coating liquid generates convex and concave phenomena, the catalytic liquid cannot be quickly fused into the coating liquid, the phase conversion reaction is generated, the modified glass beads cannot be uniformly laid, and the overlapping and stacking phenomena can be caused. According to the technical implementation scheme, the building material integrated forming machine tool capable of achieving uniform coating comprises a first bottom frame, a first supporting frame and the like; the front side face and the rear side face of the first bottom frame are each fixedly connected with a first supporting frame. The filling system is designed, raised coating liquid on the upper surface of the cement rock wool sandwich panel is sucked away, and the concave part of the upper surface of the cement rock wool sandwich panel is filled with the coating liquid, so that the coating liquid on the upper surface of the cement rock wool sandwich panel is uniformly distributed.

The invention discloses a smoke removing and infrared suppressing device for diesel engine exhaust. The device comprises a main flow spray pipe, an air ejecting pipe, a mixing pipe, a negative ion generation device, a diffuser pipe, a vortex generator and a rectifying grid, wherein the main flow spray pipe is connected with a main flow inlet in the middle of the air ejecting pipe, and a branch flow inlet is arranged on the outer side of the main flow inlet in the middle of the air ejecting pipe in the circumferential direction. The vortex generator, the rectifying grid and the negative ion generation device are sequentially arranged in the mixing pipe. The negative ion generation device comprises a negative ion generator electricity and heat insulation protection shell, a negative ion generator and a negative ion generator high voltage electrode, wherein the negative ion generator is positioned in the negative ion generator electricity and heat insulation protection shell, and one endof the negative ion generator high voltage electrode penetrates out of the negative ion generator electricity and heat insulation protection shell. According to the smoke removing and infrared suppressing device, cooling and smoke removing of the diesel engine exhaust can be realized, and ionic wind generated by the negative ion generator can promote the mixing of high-temperature and low-temperature gas, thus further reducing the temperature of the exhaust and improving infrared suppressing performance of the device.

The nozzle (2) is provided with a suction duct (7), which extending from the connection stub (6) through the nozzle body (5) opens out in the nozzle head (4). The nozzle head is designed swivelable relative to the nozzle body. The swiveling ability is achieved with a joint (12) having a vertical joint axis (Z).

The invention relates to a five-axis linkage point butt joint sock turning device. The sock turning device solves the problem that an existing sock turning device is insufficient in sock sucking precision. The sock taking device comprises a sock taking frame body, wherein a sock taking driving mechanism is arranged between the sock taking frame body and a sock machine rack, a sock sucking barrel with a sock turning mechanism is movably arranged on one side of the sock machine rack, a sock sucking opening is formed in the upper end of the sock sucking barrel, the lower end of the sock sucking barrel is connected with a negative pressure mechanism, a sock sucking driving mechanism is arranged between the sock sucking barrel and the sock machine rack, and the sock taking driving mechanism andthe sock sucking driving mechanism are linked with each other. The sock turning device has the advantages that point butt joint in the sock suction process is achieved in a five-axis linkage mode, the sock suction angle can be adjusted in multiple directions, sock suction opening and a sock body are vertically and obliquely arranged, and therefore suction force is maximized, and accurate suctionof the sock is guaranteed; and sock suction can be achieved when the sock leave the side above a sock knitting mechanism, the angle of the sock suction opening is adjusted according to the angle of the sock, the sock suction mechanism can suck the socks at the first time, and the sock turning production efficiency is improved.

The invention discloses a revolving bed, which comprises a revolving bed layer, a liquid phase distribution pipe, a gaseous phase inlet and a gaseous phase outlet, a liquid phase inlet and a liquid phase outlet, a shell, a composite impeller, a mud baffle ring and a mud collection box. Two ends of the shell are provided with the gaseous phase inlet and the gaseous phase outlet respectively; the liquid phase distribution pipe has a cylindrical structure, of which the pipe wall is provided with liquid distribution holes; the liquid phase distribution pipe is both used as a rotating shaft of therevolving bed layer and the composite impeller; the composite impeller is arranged at a position close to the gaseous phase inlet; the mud baffle ring has an annular structure, which is close to the shell and fixed between the revolving bed layer and the composite impeller; the mud collection box is arranged at the bottom of the shell corresponding to the composite impeller; the liquid phase inlet is connected with the liquid phase distribution pipe through a revolving joint; and the liquid phase outlet is arranged at the bottom of the shell. The composite impeller removes the micro solid particles in a gaseous phase so as to realize the pretreatment on the gaseous phase and prevent the revolving bed layer from scaling. The revolving bed is applicable to gaseous phase and liquid phase mass transfer and reaction, particularly the gaseous phase and liquid phase mass transfer and reaction with micro solid particles.

The invention relates to a vortex-induced vibration suppression device and method for discharging and sucking seawater by pressure difference of fluctuation of waves. The vortex-induced vibration suppression device is composed of a bracket and a seawater sucking system. The bracket is used for fixing the seawater sucking system on a marine riser. The seawater sucking system is composed of eight auxiliary circular pipes evenly distributed in the circumferential direction of the marine riser. Seawater discharging and sucking holes distributed in a staggered mode are formed in the upper parts ofthe auxiliary circular pipes, gas chambers are formed in the lower parts of the auxiliary circular pipes, the chambers are filled with compressible gas, disc-shaped pistons and limit rings are sequentially arranged on the upper part of the chambers, and the pistons can freely move up and down in the lower spaces of the limit rings. The vortex-induced vibration suppression device utilizes the pressure difference of the fluctuation of the waves to induce seawater to be continuously sucked and discharged from the auxiliary circular pipes, the boundary layer separation and vortex shedding of the marine riser are disturbed under the combined actions of the constant adjustment of the flow and momentum and the interference of a flow field of the auxiliary circular pipes, and thus the vortex-induced vibration suppression is realized without energy consumption.

The invention provides an automatic water adding and draining device for a water tank and a cleaning robot. A sewage tank of the automatic water adding and draining device is arranged in a clear water tank; a transverse piece is arranged on a vertically-arranged guide column, and is connected to a water injection pipe and a sewage pumping pipe; the upper ends of the water injection pipe and the sewage pumping pipe are fixedly arranged on the transverse piece; the lower end of the water injection pipe faces the clear water tank, and the lower end of the sewage pumping pipe faces the sewage tank; one end of an elastic connecting piece is connected with the lower end of the sewage pumping pipe, and the other end of the elastic connecting piece is connected with the upper cover of the clear water tank; the transverse piece moves downwards along the guide column, the sewage pumping pipe extends downwards into the sewage tank to pump sewage in the sewage tank, the elastic connecting piece pulls up the upper cover of the clear water tank, and the lower end of the water injection pipe conveys clear water into the clear water tank. Sewage in the sewage tank is sucked through the sewage suction pipe, clear water conveying and automatic water adding and discharging in the clear water tank are synchronously achieved, the operation of manual sewage cleaning and water adding is omitted, manual operation of the cleaning robot is reduced, and the convenience degree is improved.

The invention provides a multi-specification bagging auxiliary device for chemical fertilizer. The multi-specification bagging auxiliary device for the chemical fertilizer comprises a bracket, an adjusting mechanism and a clamping mechanism, wherein the adjusting mechanism is connected to one side of the bracket and used for adjusting packaging bags with different sizes. The multi-specification bagging auxiliary device for the chemical fertilizer has a function of rapidly bagging chemical fertilizer granules and can clean dust residues in the produced chemical fertilizer granules, a motor is started to drive bevel gears to rotate through a power shaft, fan blades are driven to rotate through bevel gear transmission, and therefore, the dust in the chemical fertilizer granules can be absorbed; and the device can realize clamp bagging of the packaging bags with multiple specifications and sizes, by means of pushing a pull handle, a telescopic circular ring fixedly mounted with a rack I and a rack II is driven to be subjected to telescopic adjusting, and thus, the size adjustment of the packaging bags with multiple specifications can be realized.

The invention discloses a water body floating oil collecting device which comprises floating plates floating on the water surface. A mounting groove is formed in the bottom of each floating plate, a connecting column is rotatably connected into each mounting groove, a plurality of pushing plates are fixed to the outer wall of each connecting column in the circumferential direction at equal intervals, and hydrophobic and oleophylic sponges are bonded to the side walls of the pushing plates; two circular cavities are formed in each pushing plate, oil squeezing mechanisms are arranged in the circular cavities, an oil inlet cavity is formed in each pushing plate, a plurality of oil inlet holes communicated with the corresponding oil inlet cavity are evenly distributed in the joint of the hydrophobic oleophylic sponge and each pushing plate, and an oil storage groove communicated with the oil inlet cavity is formed in each connecting column; and a device cavity and a cylindrical cavity areformed in the positions, located at the left side and the right side of the corresponding mounting groove, in each floating plate correspondingly, a rotating rod is arranged in each device cavity in apenetrating manner, a wind cup is fixed to the upper end of each rotating rod, and a power generation mechanism is arranged on the outer wall of each rotating rod. The water body floating oil collecting device is reasonable in structure, can be arranged on a riverway in a manner that the plurality of floating plates are spliced, and can utilize wind energy in a large area for cleaning and collecting.

The invention discloses a 3D printing device for parts for home design. The 3D printing device comprises a base, wherein a supporting frame is fixedly connected to the base, a transverse plate is fixedly connected to the upper end of the supporting frame, a supporting plate is fixedly connected to the inner wall of the supporting frame, and a D printer is fixedly installed at the bottom of the supporting plate; a first rotating rod is arranged between the supporting plate and the transverse plate, the first rotating rod is rotationally connected with the inner wall of one side of the supporting frame, the other end of the first rotating rod penetrates through the supporting frame and is rotationally connected with the supporting frame, and the middle of the first rotating rod is a first reciprocating lead screw; and a first sliding block abutting against the transverse plate and slidably connected with the transverse plate is arranged at the bottom of the transverse plate, and the first reciprocating lead screw penetrates through the first sliding block and is connected with the first sliding block in a matched manner. According to the 3D printing device, powder can be effectively removed through one driving motor, and meanwhile, a screen plate can be vibrated and cleaned, cleaning and collecting of the powder can be achieved without stopping the 3D printing equipment, and the working efficiency is improved.

The invention relates to the field of environment sanitation, and discloses suction sewage equipment, a suction sewage truck and a suction sewage method. The suction sewage equipment comprises a sewage tank (10), a vacuum pump (20) for the sewage tank (10), and a suction sewage pipe (30) communicating with the sewage tank (10), wherein a port for controlling the suction sewage pipe (30) and a valve (40) communicating with the sewage tank (10) are arranged on the suction sewage pipe (30). According to the suction sewage equipment disclosed by the invention, the valve is opened when the degree of vacuum in the sewage tank reaches a predetermined value, a large pressure difference is generated at the port of the suction sewage pipe instantly and a strong air flow is formed, so that the sewage is conveyed into the sewage tank by the air flow, and a convey height difference generated in the manner, which is greater than that generated through the negative pressure suction is achieved.

The invention discloses a system and a method for adjusting seepage water pressure in a slope with a variable water level. The system comprises a water collecting anchor pipe at least partially arranged in the slope, a driver and a drainage pipe connected with the driver and the water collecting anchor pipe; when the water level drops, water in the water collecting anchor pipe enters the driver through the drainage pipe and is discharged through the driver; the method comprises the following steps: water level decline internal seepage water pressure adjustment is conducted; according to water level decline internal seepage water pressure adjustment, when the reservoir water level declines, decline of the underground water level in the slope lags behind the water level outside the slope, water in the water collecting anchor pipe is discharged under the combined action of suction force and pressure difference, and the water level in the slope is lowered. The system for adjusting seepage water pressure in the slope with the variable water level has the advantages that disturbance to the undisturbed soil body of the bank slope is small, underground water in the slope body above the reservoir water level can be synchronously discharged along with descending of reservoir water, the outward seepage water pressure in the bank slope is effectively reduced, and the stability of the bank slope is improved.

The invention belongs to the technical field of positioning and fixing for automobile hub machining, and particularly relates to a hub machining axial safety positioning device which comprises a workbench, a mounting seat is fixedly connected to the workbench, the mounting seat is of a hollow structure, a motor is fixedly mounted in the mounting seat, a rotating seat is arranged on the mounting seat, and the rotating seat is fixedly connected with the workbench. The output end of the motor is connected with a rotating shaft through a coupler, the upper end of the rotating shaft is fixedly connected with the bottom of a rotating seat, and a positioning mechanism used for positioning a hub is arranged on the rotating seat. The positioning mechanism comprises a rotating disc fixedly connected to the rotating base, and a plurality of sliding grooves distributed in an annular array are formed in the peripheral side wall of the rotating disc. The positioning plates can make contact with and abut against the inner wall of the hub through centrifugal force, adjustment is automatically conducted according to the inner diameter of the hub, positioning of the hub is achieved, the positions of the positioning plates are further stabilized through electrorheological fluid, and then the hub is fixed more stably and stably.

The invention relates to a sealing-door oven, comprising a box body, a door and a handle. The door is provided with a locking bar; the box body is provided with a locking channel; a sensing cavity isarranged in the door and is filled with an adjusting liquid; the sensing cavity is communicated with a guide pipe; the guide pipe is extended in the locking bar and exposed from the sidewall of the locking bar; the end, exposed of the sidewall of the locking bar, of the guide pipe is sleeved with an expansion membrane that is elastic; the expansion membrane is close to the front end of an auxiliary channel; the sensing cavity is also communicated with an adjusting barrel; an adjusting plug is slidably arranged in the adjusting barrel; the adjusting plug is fixedly connected with the handle through a connection rod. The sealing-door oven has novel structure and unique principle; the oven can be sealed by the door body better to prevent heat escape, so that non-uniform temperature in the boxbody is avoided, and food taste is effectively improved.

A disclosed efficient energy-saving glass kiln comprises a kiln body, two symmetrically-arranged bases are fixed to the bottom of the kiln body, a transfer chamber is fixed to the inner wall of one side of the kiln body, a pretreatment mechanism is arranged in the transfer chamber, and a discharging pipe is inserted into the inner wall of the other side of the kiln body; and a feeding distribution mechanism is arranged on the outer wall of the side, provided with the transfer chamber, of the furnace body, smoke exhaust pipes are inserted into the upper end of the furnace body, and the other ends of the smoke exhaust pipes communicate with the interiors, close to the transfer chamber, of the bases. The kiln has the advantages that the feeding distribution mechanism is arranged, the pipe diameters of three material injection pipes are different, so that the amount of raw materials added into three transfer tanks is different and gradually reduced, and in cooperation with continuous reduction of heat absorbed in the flue gas transfer process, the flue gas waste heat obtained in the three transfer tanks is greatly improved; and the raw material quantity required to be subjected to waste heat treatment can be matched with each other, so that effective waste heat of the raw materials is ensured.

The invention discloses a double-drainage device for the oncology department, and the double-drainage device comprises a negative pressure power mechanism, a collection assembly, a negative pressure suction assembly and a control mechanism, the negative pressure power mechanism is provided with a first main electromagnetic gas valve and a main pressure sensor which are used for controlling the main gas pipe, and is provided with a first auxiliary electromagnetic gas valve and an auxiliary pressure sensor which are used for controlling the auxiliary gas pipe; through the cooperation of the negative pressure power mechanism, the collecting assembly and the negative pressure suction assembly, rapid separation type drainage of effusion and tissue blocks is achieved, the occurrence of the blocking phenomenon is greatly reduced, and the workload of medical staff is reduced; the negative pressure suction assembly is compact in overall structure through the main hose and the auxiliary hose which are arranged in a sleeved mode, long-distance effusion suction in the tissue block drainage process is achieved, and the separation effect is good.

The invention provides a flue gas backflow combustion chamber with variable rotational flow, which comprises a combustion chamber cavity, a combustion chamber throat arranged at the upper end of the combustion chamber cavity and a swirler blade structure arranged at the upper end of the combustion chamber throat, wherein the swirler blade structure comprises fixed swirler blades arranged at equalintervals, blade flow channels are formed between the fixed swirler blades, each blade flow channel is provided with a movable swirler blade, and a flue gas backflow channel is arranged between each blade flow channel and the combustion chamber cavity. According to the invention, the purpose of low emission can be achieved no matter under a high rotational flow condition or a low rotational flow condition.