143results about How to "Improve purging effect" patented technology

The invention provides a drying stirrer for silicon tetrachloride slag slurry in a cold hydrogenation technology. The drying stirrer comprises a shell, a stirring shaft and a transmission device. A drying cavity is defined by the shell. The shell is provided with a feeding port and a discharging port. The stirring shaft is horizontally arranged in the drying cavity and comprises a shaft head and a hollow shaft tube, wherein the shaft head and the hollow shaft tube are welded together. The hollow shaft tube is provided with stirring blades. A first helical band and a second helical band are fixed to the hollow shaft tube through supporting rods and are wound around the periphery of the hollow shaft tube. The respective spiral directions, on the left side and the right side of the hollow shaft tube, of the first helical band and the second helical band are opposite, and the spiral directions of the first helical band and the second helical band are opposite. Under rotation of the stirring shaft, the first helical band enables the slurry to move from the two sides to the middle, and the second helical band enables the slurry to move from the middle to the two sides. The drying stirrer enables the slurry to flow circularly, and the slurry is stirred more evenly. The invention further provides a treatment system and method for the silicon tetrachloride slag slurry.

A top heat field for preparing 6-inch and 8-inch heavyly doped monosilicon by straight pulling up is composed of an insulating cover consisting of the upper and lower hollow trancated cones, and an upper cover plate fixed to the top of said insulating cover and put on a supporting pipe. It can enhance the scavenge action of the airflow on the surface of molten body for removing the fine particles from the surface.

The invention discloses a titanium plate hot continuous rolling large-scale manufacturing method. The titanium plate hot continuous rolling large-scale manufacturing method comprises the following steps of: step (1) heating; (2) carrying out rough rolling; step (3) carrying out finish rolling; step (4) crimping; step (5) welding; and step (6) pickling and annealing. According to the titanium platehot continuous rolling large-scale manufacturing method, the temperature required for rolling a titanium plate is ensured by arranging a heat preservation cover on a conveying roller; before an titanium ingot is heated, the edge of the titanium ingot is chamfered, and the chamfering reduces the drum type deformation of the edge of the titanium plate and ensures the shape of a plate formed by rolling the titanium plate.

The invention relates to a hydraulic pipeline system and especially relates to a purge precleaning system of the hydraulic pipeline system. The bidirectional pulse purge precleaning system of the hydraulic pipeline system includes a gas storage tank with a pressure gauge; an air compressor is connected with the gas storage tank through a non-return valve; a pair of switch valves are connected in parallel in the outlet of the gas storage tank, and gas pipe interfaces are arranged in the outlets of the switch valves; the pipeline system includes a main pipeline P pipe and a main pipeline T pipe,gas pipe interfaces are arranged in the inlets of the main pipeline P pipe and the main pipeline T pipe, and the gas pipe interfaces are connected with the corresponding gas pipe interfaces in the outlets of the switch valves through temporary pipelines. The air compressor is used for inflating the gas storage tank to high pressure, and forward and reverse purge is realized by utilizing the connection and disconnection of the temporary connecting pipes. The precleaning with high efficiency and quality of the hydraulic pipelines is realized, and the flushing efficiency and quality of the subsequent oil flushing are improved.

A diffuser tower assembly having a diffuser with a flared end and a fitting with an offset portion and nipple sized for the flared end. The assembly may be configured for providing low coverage purging. Diffuser tower assemblies may be in the form of a kit for retrofitting existing front opening wafer containers. The inlet fitting may include structure that enhances purge characteristics near the base of the porous media diffuser for enhanced sweeping of the floor of the substrate container. Embodiments of the disclosure generate an uneven flow distribution that provides a non-uniform flow distribution at the opening. In an embodiment, where the opening is in a substantially vertical orientation, the non-uniform flow distribution is tailored to deliver a greater flow rate to the bottom half of the opening than to the top of the opening.

The invention provides a shutdown purging method of a vehicle-mounted fuel cell, belongs to the technical field of shutdown purging of fuel cell stacks, and solves the problem that modal water in a proton exchange membrane cannot be effectively eliminated in the prior art. The method comprises the steps of acquiring an impedance range when the water content of the fuel cell is lower than a preset value at different environment temperatures; after a whole vehicle shutdown instruction sent by a user is received, monitoring the environment temperature at the current moment, and recognizing the impedance range when the water content, which corresponds to the environment temperature, of the fuel cell is lower than a preset value; performing first purging on the fuel cell stack, monitoring the real-time high-frequency impedance of the stack in the purging process, stopping purging until the real-time high-frequency impedance falls into the recognized impedance range, and obtaining the first purging time; and after the purging is stopped for a preset time, monitoring the environment temperature again, continuously performing purging on the fuel cell stack until the last purging time reaches a specified threshold value, stopping the whole vehicle, and shutting down the fuel cell stack.

The invention discloses a realization method for film preparation by applying an atomic layer deposition technology. A different ALD technological mode of a vacuumizing mode or a variable flow mode is used for changing an intake quantity of sweeping gas in a reaction cavity to form disturbance of an airflow field in the cavity, so that the sweeping effect on a surplus reaction source and a reaction byproduct can be effectively improved, the process time of film growth period is shortened, the productivity is improved, the parasitic CVD reaction can be reduced on the basis, the ALD process quality is improved, and the film uniformity is improved.

Methods and apparatus are provided for forming thin films for semiconductor devices, which enable supplying and removing reactants containing constituent elements of a thin film to be formed, by preheating and supplying a process gas and a purging gas at a predetermined temperature in forming the thin film on a substrate. For example, a method for forming a thin film includes supplying a first reactant to a chamber to chemically adsorb the first reactant onto a substrate, the first reactant being bubbled by a first gas that is preheated, purging the chamber to remove residues on the substrate having the first reactant chemically adsorbed, and forming the thin film by a means of chemical displacement by supplying a second reactant to the chamber to chemically adsorb the second reactant onto the substrate.

The invention discloses a combined bionic anti-abrasion H-shaped fin elliptical flue gas heat exchange tube which comprises more than two rows of elliptical tubes in the flowing direction of gas and fins arranged on the two sides of the elliptical tubes, wherein a plurality of pairs of semispherical dimples are arranged on the windward sides of the fins; first through holes penetrating through the fins are formed in the bottoms of the semispherical dimples; a plurality of eddy generators are arranged on the leeward sides of the fins; a through hole adjacent to each eddy generator is formed in one side of the eddy generator. According to the flue gas heat exchange tube, the elliptical tubes are used as base tubes, the fins are arranged on the inner two sides of the elliptical tubes, the semispherical dimples and the eddy generators are arranged on the fins, and by the dimples, the flowing resistance can be effectively reduced to avoid the formation of large eddy turbulence in a flow field; in addition, by the novel combined fin structure, the comprehensive heat exchange efficiency can be effectively improved, and tail soot formation and tube abrasion can be greatly reduced.

The technical scheme of the invention discloses a cleaning and sweeping device and a method and mechanical arm for cleaning and sweeping a wafer. The cleaning and sweeping device comprises sucking parts and a cleaning and sweeping mechanism; the sucking parts are used for being sucked under a grasping part of the mechanical arm; the cleaning and sweeping mechanism includes a support part, air inlets and cleaning and sweeping holes, the support part supports the sucking parts, and the cleaning and sweeping holes are communicated with the air inlets; the cleaning and sweeping holes are used forpurging the back side of an object when the grasping part of the mechanical arm grasps the object. According to the technical scheme, cleaning and sweeping can be achieved in the process of conveyingthe object, not only is excessive cleaning and sweeping time not required to be add, but also pollution particles on the back side of the object can be reduced, cross-contamination between process equipment caused by particulate matter and process defects are prevented, and therefore the production yield of the wafer is improved.

The invention discloses an automatic purging system for an aluminum strip mill. The automatic purging system comprises an oil film thickness monitoring device, a remote control center, the mill and a purging device. The oil film thickness monitoring device, the remote control center and the purging device are sequentially connected. The oil film thickness monitoring device and the purging device are arranged on the mill. The mill comprises a mill body and an aluminum strip on the mill body. The automatic purging system can purge redundant oil in the cold rolling process of the aluminum strip and achieves remote control over the purging intensity through oil film thickness monitoring which is performed in advance. The invention further discloses an operation method of the automatic purging system for the aluminum strip mill, temperature monitoring for the aluminum strip and thickness monitoring for the redundant oil are achieved, the temperature of purging gas is controlled during heating, and therefore the redundant oil can be better blown off. The purging device can blow evenly within a large range, so the oil on the aluminum strip can be purged more evenly and thoroughly, and the purging effect is better.

The invention discloses a gas homogenizing device and semiconductor processing equipment. The device comprises a gas inlet piece, a flow homogenizing piece and an exhaust piece, wherein at least two gas inlet channels are formed in the gas inlet piece; at least one first distribution part and a plurality of first flow homogenizing parts are arranged on a first surface of the flow homogenizing piece, and the first distribution part is in communication with the corresponding gas inlet channel and the corresponding first flow homogenizing parts; at least one second distribution part and a plurality of second flow homogenizing parts are arranged on a second surface of the flow homogenizing piece, and the second distribution part is in communication with the corresponding gas inlet channel andthe corresponding second flow homogenizing parts; and the exhaust piece is provided with a plurality of first exhaust parts and a plurality of second exhaust parts, wherein the first exhaust parts arein communication with the corresponding first flow homogenizing parts and a process chamber, and the second exhaust parts are in communication with the corresponding second flow homogenizing parts and the process chamber. The effect that at least two process gases are independent from each other and are uniformly conveyed and distributed to the process chamber can be achieved.

The invention relates to an anti-clogging device for a drum screen, comprising a main pipe, a jet device, a movable joint, a pulse electromagnetic valve, a main pipe movable joint, a variable-diameter three-way connector and a pipe clamp, wherein one end of the main pipe is connected with a gas source, and the other end of the main pipe is connected with a first branch pipe through the main pipe movable joint; the first branch pipe is connected with a branch pipe through the variable-diameter three-way connector; and the pipe clamp is arranged on the branch pipe, and the variable-diameter three-way connector is connected with the jet device through the moveable joint; and a nozzle is arranged on the jet device. The anti-clogging device blows an object through the action of gas flow, and the blowing area can cover the effective area of all the sieve plates, and therefore better blowing effect is formed; air produces intermittent blowing through the throttling action of the electromagnetic valve, and the blowing efficiency is improved; the anti-clogging device is simple in structure, low in manufacture cost and energy-saving, and is conveniently mounted and used; and the labor intensity of workers is reduced, the pollution is reduced, and the industrial popularization and application are convenient.

The invention relates to a radar antenna cooling anti-adhesion device for high temperature dust measurement, belonging to the field of high temperature radar survey. The device is characterized by comprising an adjustable radar heat insulation sleeve (1), a gas induct hole (2), a flange piece (3), an antenna inner cover (4) and an antenna outer cover (5); the processing length of the radar heat insulation sleeve can be adjusted, and the upper part of the radar heat insulation sleeve is provided with a cooled sink which has the functions of radar heat insulation and heat dissipation; the gas induct hole is externally connected with nitrogen pressure gas, and the pressure of the gas is 0.9-1.1kg higher than that near an antenna; the antenna inner cover takes on a horn shape, the outer coveris fixed on the inner cover and screwed down by screw thread or compressed by the flange piece, the antenna outer cover is parallel to the axis of the antenna by axial cylinder, and the inner cover istaken as an echo reflecting surface of a bellmouth of a radar. The radar antenna cooling anti-adhesion device has the advantages of good sweeping effect, long maintenance free time and the like, canbe used for the places needed to be swept and cooled, and is widely applied to the fields such as metallurgy, petrochemical engineering, etc.

The invention relates to a fuel cell system and a shutdown purging method thereof. The system comprises a galvanic pile, an air supply subsystem connected with a cathode of the galvanic pile, a hydrogen supply subsystem connected with an anode of the galvanic pile, a cooling circulation subsystem connected with the galvanic pile, a hydrogen/air mixing box respectively connected with the air supply subsystem and the hydrogen supply subsystem and a controller used for controlling the subsystems. The output end of the galvanic pile is connected with the driving motor by being connected with the DC/DC converter, and after the controller receives a shutdown command, in the fuel cell system shutdown process, the controller controls the temperature of the galvanic pile according to the cooling circulation subsystem and controls the actuator to correspondingly purge the interior of the galvanic pile. The method has the advantages of improving the cold start capability of the fuel cell galvanic pile at low temperature, effectively prolonging the service life of the fuel cell galvanic pile and the like.

The invention discloses a method for detecting the solid content of slurry so as to overcome the defects in the prior art. The method comprises the following steps: a, performing centrifugal treatment on a stirred chlorosilane slurry sample by a centrifugal machine; b, purging the residual volatile chlorosilane liquid by introducing nitrogen; and c, weighing the weight of the residual solid to obtain the solid content of the slurry. According to the method for detecting the solid content of the chlorosilane slurry in a cold hydrogenation process provided by the invention, the chlorosilane slurry and the chlorosilane liquid are separated by the centrifugal machine and then are treated, so the detection time is greatly shortened. The detection method is simple and convenient to operate, clean, safe and insusceptible to environmental pollution; furthermore, a polytetrafluoroethylene centrifugal test tube is insusceptible to corrosion, and cleaning and maintenance of appliances, such as the centrifugal test tube and the like, are facilitated after detection is finished.

The invention discloses a gas guide system for a gas-burning double-hearth lime kiln. The gas guide system comprises a first kiln hearth and a second kiln hearth, wherein first ring pipes are respectively arranged on the outer walls of the hearth bodies of the first kiln hearth and the second kiln hearth; a gas pipeline, a cooling air duct and a nitrogen pipeline are connected to the first ring pipes; a plurality of spray gun hoses are connected onto the first ring pipes; a plurality of spay guns corresponding to the spray gun hoses are connected onto inner walls of the heart bodies of the first kiln hearth and the second kiln hearth; the spray guns are communicated with the spray gun hoses; a gas pressuring machine is connected onto the gas pipeline; check valves are connected onto the gas pipeline and the cooling air duct; a protective cover is connected onto the spray guns; and the spray guns are positioned inside the protective cover. The gas guide system disclosed by the invention is simple in structure, and the using cost and maintenance cost of the hearths are saved. Meanwhile, the usage amount of purge gas is saved, the purging effect is excellent, process concatenation is simple, the concatenation points of the process are greatly reduced, the process is conveniently controlled, and the production efficiency is improved.

The invention discloses a circulating air type ash blocking preventing device and a rotary air preheater. The circulating air type ash blocking preventing device comprises a circulating air bin, a circulating draught fan, a conveying pipe, a grinding bin and a control unit, wherein the upper end of the circulating air bin is a hot end, and the lower end of the circulating air bin is a cold end; an upper air channel is connected to the outside of the hot end of the circulating air bin, and a lower air channel which is connected with an air outlet of the circulating draught fan is connected to the outside of the cold end of the circulating air bin; the upper air channel is connected with an air inlet of the circulating draught fan; the conveying pipe communicates with the lower air channel; a grinding solenoid valve which is mounted on the conveying pipe is arranged at a discharging port of the grinding bin; a control end of the grinding solenoid valve is connected with a control unit. The rotary air preheater is provided with the abovementioned circulating air type ash blocking preventing device. The circulating air type ash blocking preventing device influences the smoke exhausting temperature a little, and does not influence the primary air, the secondary air and the smoke; the grinding sweeping mode shows good effect on sweeping an intermediate temperature area of a heat storing plate; the damage of NH4HSO can be effectively solved, and the quantity of air leaking in smoke as well as the air leakage rate can be reduced.

The invention discloses a circulating fluidized bed boiler coal drop pipe anti-blocking system which comprises a vertically-arranged first coal drop pipe and an obliquely-arranged second coal drop pipe, the upper end of the first coal drop pipe is used for being connected with an outlet of a coal feeder, and the lower end of the first coal drop pipe communicates with the side wall of the second coal drop pipe. One end of the second coal drop pipe is installed on a furnace wall, an air cannon is installed at the other end of the second coal drop pipe, the second coal drop pipe is sleeved with a plurality of annular gas spray pipes, and each annular gas spray pipe communicates with the second coal drop pipe through a plurality of nozzles. The air cannon and each annular gas spray pipe are connected with a gas source. According to the circulating fluidized bed boiler coal drop pipe anti-blocking system, raw coal is not easy to dry and bond at the furnace inlet, so that the raw coal smoothly enters the hearth, and the problem of blockage of the coal dropping pipe is effectively solved.