30results about How to "Reduce air pressure fluctuations" patented technology

The invention belongs to the technical field of material surface coatings, and particularly relates to magnetron sputtering coating equipment. The hidden gas circuit design is adopted, inert gases are naturally diffused to the surface of a target material from the edge of the target material, air pressure fluctuation on the surface of the target material is effectively lowered, and repeatability of the coating technology is guaranteed. In addition, the nonequilibrium magnetic field and the compensation gas circuit design are adopted in the equipment, the problem that the coating thickness is uneven due to gas circuit homogenizing and magnetic field homogenizing in an existing structure is effectively solved, and the coating thickness of all areas of a substrate is kept even.

The invention discloses an electrolysis system with an ion membrane electrolyzer and a pressure regulating method thereof. The gas pressure fluctuation in the ion membrane electrolyzer is small when the chlorine pressure and hydrogen pressure in the ion membrane electrolyzer are regulated. The electrolysis system mainly adopts a chlorine pressure regulating device and a hydrogen pressure regulating device for adjustment, the chlorine pressure regulating device comprises a first chlorine regulating valve on a pipeline between a water trap and a drying device and a second chlorine regulating valve on a waste gas recycling branch pipe; and the hydrogen pressure regulating device comprises a first hydrogen regulating valve arranged between a hydrogen washing tower and a hydrogen compressor on a hydrogen recycling branch pipe and a second hydrogen regulating valve arranged on a hydrogen emptying branch pipe.

The invention provides a special connector for ventilation of a high-rise building, which comprises a collecting box. The collecting box consists of a box body and a box cover arranged at the upper part of the box body. The box cover is provided with an upper drainage orifice and an upper ventilating orifice. A lower drainage orifice and a lower ventilating orifice are arranged at the bottom of the box body. An upper drainage pipe connecting pipe, an upper ventilating pipe connecting pipe, a lower drainage pipe connecting pipe and a lower ventilating pipe connecting pipe are respectively arranged corresponding to the upper drainage orifice, upper ventilating orifice, the lower drainage orifice and the lower ventilating orifice. The box cover, the upper drainage pipe connecting pipe and the upper ventilating pipe connecting pipe form a connecting box cover injection moulded at one time. The box body, the lower drainage pipe connecting pipe and the lower ventilating pipe connecting pipe form a ventilating box body injection moulded at one time. The special connector for ventilation of the high-rise building has the advantages of small occupied space, good ventilating effect, easiness in production and construction, and low cost.

The invention discloses an evaporation crucible, relates to the technical field of evaporation equipment, and can reduce the speed fluctuation of steam sprayed by a nozzle and reduce the possibility that a coating material is attached to the inner side of the nozzle and continuously grows. The evaporation crucible comprises a crucible body, a screen plate assembly and the nozzle; the crucible bodycomprises a bottom wall and a side wall which is arranged around the bottom wall, the bottom wall and the side wall define a containing cavity with an opening, the surface, close to the containing cavity, of the side wall is a first surface, the first surface comprises a supporting face parallel to the bottom wall; the screen plate assembly comprises at least one screen plate with meshes, the screen plate assembly is abutted with the supporting surface; and the nozzle is mounted at the opening of the containing cavity and is provided with an air spraying hole. The evaporation crucible disclosed by the invention is used for an evaporation process.

The invention provides a modularization same-layer drainage device for high-rises and a mounting method thereof. The device comprises a water accumulating box, a vertical tube connecting pipe, a lower air pipe which penetrate the bottom wall of the water accumulating box, an upper air pipe which is installed on the top cover of the water accumulating box and is communicated with the inner part of the water accumulating box; and a waste water discharge inlet which is installed in the top cover of the water accumulating box; a vertical tube connecting pipe is provided with a water outlet which is positioned inside the water accumulating box; the waste water drainage inlet and a water outlet are communicated; the vertical tube connecting pipe is provided with a side discharge connecting member which is communicated with a water closet discharge port, wherein the side discharge member comprises a flat sewage box; an end, communicated with the vertical tube connecting pipe, of the sewage box is provided with a sewage outlet; a side wall of the sewage box is provided with a water closet connecting port whose opening direction is vertical to the axis of the vertical tube connecting pipe. The modularization same-layer drainage device for high-rises of the invention has a simple structure, scientific design and reliable performance and is convenient to use; the device has excellent seepage-proofing performance; stink proofing is realized by concentrated water sealing; the water closet discharge port is convenient to mount and is not liable to block.

The invention discloses a coal mine underground-fire prevention method. The method includes a gas pressure regulating chamber and a gas monitoring system. The gas pressure regulating gas chamber connects, collects and concentrates coal mine return wind to a pressure equalizing gas chamber through pipelines. According to the gas monitoring system, a flammable-gas detector and an infrared sensor areinstalled at each monitoring point, an alarming controller is connected near the flammable-gas detector, the alarming controller is connected to a fan of the pressure equalizing gas chamber through aline conductor, and controls starting and stopping of the fan of the pressure equalizing gas chamber, and the alarming controller and the infrared sensor are remotely connected to a control computerthrough a manner of wireless communication. The method has the advantages that the pressure equalizing combination gas chamber is taken as a main body, all pressure regulating and detection in a mining area are concentrated into one place, and are centrally managed, the purpose of reducing personnel and improving efficiency can be achieved, and a comprehensive fire prevention and extinguishing measure integrating facility maintenance, installation, detection, prevention and control into one body thoroughly eliminates mining area fire prevention and extinguishing hidden-troubles.

The invention provides a chip picking head which comprises a base, a vacuum suction head penetrating into the base, a lifting driving device and a rotating driving device. The vacuum suction head comprises an air guide rod, a suction nozzle connected to the bottom of the air guide rod, and an air suction device connected to the top of the air guide rod. The lifting driving device comprises a cylinder. The cylinder comprises a piston rod which can stretch out downwards and abut against the vacuum suction head to drive the air guide rod to move down. The rotating driving device can drive the airguide rod to rotate so as to drive the suction nozzle to rotate. By controlling the air pressure of the cylinder, the press-down force of the suction nozzle is controlled, compared with a mode of controlling the press-down force of the suction nozzle through a motor, the precision is higher, errors are lower, the press-down force of the suction nozzle can be better controlled, and chips are prevented from damage. By driving the suction nozzle to rotate through the rotating driving device, the control over the rotating angle of the chips can be realized, the chips can be better aligned with bonding pads on circuit boards, and the product quality is improved.

The invention discloses a pharmaceutical-grade clean compressed air preparation system and method. The system comprises an air compressor, a pressure buffer tank, a front filter, a cooling dewatering machine, an adsorption dryer, an active carbon filter and a terminal filter which are sequentially arranged in the air circulation direction. According to the pharmaceutical-grade clean compressed air preparation system, the cooling dewatering machine and the adsorption dryer are sequentially arranged, so that a heat source is effectively reduced, moisture contained in compressed air is better removed, carried substances in water are reduced, and the quality of the compressed air is improved; meanwhile, by the adoption of a filter combination mode that the front filter, the active carbon filter and the terminal filter are sequentially arranged, dust particles, oil dirt and microorganisms in the air are fully removed, and it is guaranteed that the pharmaceutical-grade clean compressed air is acquired.

The invention discloses an air pressure adjusting method for an ultrahigh-speed elevator shaft. The method utilizes a forced ventilation pressure adjusting device to adjust shaft air pressure, and comprises the following steps: calculating parameters of the forced ventilation pressure adjusting device; obtaining shaft air pressure monitoring data and elevator operation data; and calculating shaft air pressure adjusting parameters to control a flow and an airflow direction of the forced ventilation pressure adjusting device, and adjusting the shaft air pressure. The invention further discloses an air pressure adjusting device for an ultrahigh-speed elevator shaft. The device comprises a controller, a shaft air pressure monitoring device and a forced ventilation pressure adjusting device. The shaft air pressure monitoring device monitors shaft air pressure in real time and sends the shaft air pressure to the controller, and the controller calculates shaft air pressure adjusting parameters and controls the forced ventilation pressure adjusting device to achieve adjustment of the shaft air pressure by supplying air to the shaft or exhausting air from the shaft. According to the method and the device, the building tapping cost can be saved, adapting to the actual situation and seasonal change of a building can be realized, noise and air pressure of an elevator car are improved, and the phenomenon that the self-closing force of a landing door is insufficient is improved.

The invention discloses a buffering constant-pressure control system of a die-cutting machine. The buffering constant-pressure control system comprises reciprocating cylinders, and is characterized in that the four reciprocating cylinders are distributed and fixed on a movable die of the die-cutting machine in a square matrix, and a buffering structure for the lifting motion of the movable die is formed; and the four reciprocating cylinders are respectively communicated with four buffer gas tanks, the gas volume of the buffer gas tanks is more than twice that of the reciprocating cylinders, the four buffer gas tanks are communicated with a precise pressure regulating valve, the precise pressure regulating valve is communicated with an air inlet valve, the air inlet valve is provided with a pressure sensor, and the air inlet valve is provided with a starting threshold value. By means of the buffering constant-pressure control system, stable operation of the whole gas circuit control system is achieved, and motion inertia is eliminated through constant buffering pressure.

The invention discloses a vortex pump with a stable exhaust function, a vortex-compressor and a vehicle-mounted heat pump air-conditioning system. The heat pump air-conditioning system comprises a compressor, a vehicle-mounted four-way reversing valve, a first parallel flow heat exchanger and a second parallel flow heat exchanger which form a circulation loop, the circulation loop is internally provided with a refrigerating fluid, an outlet of the compressor, the vehicle-mounted four-way reversing valve, the first parallel flow heat exchanger, an expansion valve, the second parallel flow heatexchanger, the vehicle-mounted four-way reversing valve and an inlet of the compressor form a refrigerating mode loop; the outlet of the compressor, the vehicle-mounted four-way reversing valve, the second parallel flow heat exchanger, the expansion valve, the first parallel flow heat exchanger, the vehicle-mounted four-way reversing valve and the inlet of the compressor form a heating mode loop.The heat pump air-conditioning system has the advantages that the electric vortex-compressor for a heat pump is adopted, multiple exhaust holes are formed additionally to enhance the exhaust stability, and the functions of an in-vehicle heat exchanger and ex-vehicle heat exchanger can be interchanged through four-way valves to adapt to switching between a refrigerating mode and a heating mode.

The invention discloses an improved building zero reducing plate same-floor drainage collector. A vertical pipe deviation cavity section with a water flow center line deviating from a pipeline centerline is arranged between a vertical pipe water inlet connecting pipe opening and a vertical pipe water outlet connecting pipe opening arranged at the two ends of the pipeline center line, wherein thevertical pipe deviation cavity section communicates with a water flow channel. The vertical pipe deviation cavity section is provided with a sewage transverse branch pipe connecting opening used for being connected with a sewage draining pipeline. A common water seal cavity which is independent and is provided with at least one waste water transverse branch pipe connecting opening used for being connected with a waste water discharging pipeline is arranged by being parallel to the vertical pipe deviation cavity section. A water flow outlet of the common water seal cavity and a water flow outlet of the vertical pipe deviation pipe section are converged below the pipeline and are connected to the vertical pipe water outlet connecting pipe opening along a pipeline lower section with a water flow center line being consistent with the pipeline center line. The vertical water inlet connecting pipe opening and the vertical pipe deviation cavity section are in smooth transition connection through a bend section with the smooth curvature. An inlet section center line and an outlet section center line of the bend section are consistent with the center line of the water inlet connecting pipeopening and the water flow center line of the vertical pipe deviation cavity section correspondingly, and the sectional area of an outlet is larger than the sectional area of an inlet. By means of thestructure, the structure and effect of the building zero reducing plate same-floor drainage collector are optimized and completed, water flow falling in the vertical pipe can be more smooth while thewater falling height is reduced, air pressure fluctuation in the vertical pipe is reduced, and it is ensured that a water seal is not damaged.

The invention discloses a nozzle air pressure adjusting device with improved sealing performance, and belongs to the technical field of additive manufacturing. The nozzle air pressure adjusting devicecomprises two parts, namely a nozzle device and a gas supply device, wherein the nozzle device is mainly composed of a graphite crucible, and the nozzle device comprises a lower sealing channel, a lower positioning hole, a spraying cavity, a graphite crucible and a spraying hole; the air supply device is mainly composed of an upper air supply cover, and the air supply device comprises an air inlet, an adjusting screw rod, an air outlet, an upper positioning hole, a sensor threaded hole and an upper sealing channel. In a high-temperature metal micro-droplet jetting process, to solve the problems that the sealing performance of the device is poor and outlet air pressure is difficult to adjust, the pneumatic type on-demand jetting device can realize the effect of stabilizing pressure in thespraying cavity through a simple and rapid sealing manner, and can accurately adjust the pressure at the outlet to meet working requirements under different conditions.

The invention discloses a vacuum pipeline system and a use method thereof. The vacuum pipeline system comprises an ultrasonic handpiece; a vacuum pump; a waste receiving box; the vacuum pipeline at least comprises a first-stage pipeline, a second-stage pipeline and a third-stage pipeline; the first-stage sensor is communicated with the first-stage pipeline; the first-stage control valve is communicated with the first-stage pipeline; the second-stage sensor is communicated with the second-stage pipeline; the second-stage control valve is communicated with the second-stage pipeline and is used for being communicated with the atmosphere so as to adjust the vacuum pressure in the second-stage pipeline; and the control system is used for receiving the pressure values monitored by the first-stage sensor and the second-stage sensor and controlling the ventilation flow of the first-stage control valve and the second-stage control valve. The first-stage pipeline and the second-stage pipeline are arranged to accurately and efficiently monitor the vacuum pressure in the ultrasonic handpiece, the vacuum pressure is adjusted in real time, and meanwhile blockage monitoring and blockage adjustment are conducted.

The invention provides a modularization same-layer drainage device for high-rises and a mounting method thereof. The drainage device comprises a water accumulating box, a vertical tube connecting pipe which penetrates in the water accumulating box, a lower air pipe which penetrate the bottom wall of the water accumulating box and is not higher than the top of a top cover of the water accumulating box, an upper air pipe which is installed on the top cover of the water accumulating box and is communicated with the inner part of the water accumulating box; and a waste water discharge inlet which is installed in the top cover of the water accumulating box; a gas passageway is installed between the upper air pipe and the lower air pipe; a vertical tube connecting pipe is provided with a water outlet which is positioned inside the water accumulating box; the waste water drainage inlet and a water outlet are communicated; the top of the lower air pipe is not lower than the highest point of the water outlet; a transversely arranged sewage pipe is embedded in an upper part of the water accumulating box; the axial distance between a water closet connecting port of the sewage pipe and the vertical tube connecting pipe is not larger than 500mm. The modularization same-layer drainage device for high-rises of the invention has a simple structure, scientific design and reliable performance and is convenient to use; the device has excellent seepage-proofing performance; stink proofing is realized by concentrated water sealing; the ground layer thickness is small and material is saved.

The invention discloses a packaging container online sealing leakage detection system and method, the system comprises a conveying mechanism which is used for conveying a packaging container, a feeding and discharging manipulator which is used for clamping the packaging container, a testing device which is used for sealing the packaging container, a sealing leakage detector which is used for detecting the leakage of the packaging container, and a control device, and the conveying mechanism, the feeding and discharging manipulator, the testing device and the sealing leakage detector are electrically connected with the control device. According to the packaging container online sealing leakage detection system, modular design is adopted, the combination of different numbers of standard modules can meet any yield requirement, online full detection is truly achieved, the sealing leakage detector is matched, a test gas circuit is optimized, the minimum test volume is guaranteed, and gas pressure fluctuation in the test process is reduced, so that the test precision and stability are improved.

The present invention discloses a medical-grade clean compressed air preparation system and a medical-grade clean compressed air preparation method. The a medical-grade clean compressed air preparation system comprises an air compressor, a pressure buffer tank, a fore-lying filter, a cooling water-removing device, an adsorption drying device, an active carbon filter and a terminal filter, wherein the air compressor, the pressure buffer tank, the fore-lying filter, the cooling water-removing device, the adsorption drying device, the active carbon filter and the terminal filter are sequentially arranged along an air flowing direction. According to the medical-grade clean compressed air preparation system, the cooling water-removing device and the adsorption drying device are sequentially arranged so as to well remove the water from the compressed air while reduce the pyrogen, such that the substance carried in the water can be reduced, and the quality of the compressed air can be improved; and through the filtration combination mode of the sequential arrangement of the fore-lying filter, the active carbon filter and the terminal filter, the dust particles, the oil stains and the microorganisms in the air can be completely removed, such that the obtaining of the clean medical-grade compressed air can be ensured.

The invention relates to an internally tangent double-barrel rolling type pump, which is mainly characterized in that an outer rotor and an inner rotor are arranged in a pump shell, wherein the outer rotor is concentric with the pump shell; the inner rotor is positioned in the outer rotor and connected with a power machine; the inner rotor is composed of a main shaft, a double-ring single-beam bracket and a separation plate; and the double-ring single-beam bracket is sleeved on the main shaft and in rotary connection with the pump shell; the separation plate is movably connected with the main shaft and the double-ring single-beam bracket respectively. A main shaft inflow hole communicated with an inflow channel of the pump shell is communicated with a left working cavity through a left guide groove on the separation plate. A right working cavity is communicated with a main shaft outflow hole through a right guide groove on the separation plate. The surface contact position between the inner rotor and the outer rotor is kept in sliding friction. The tangent line contact position between the inner rotor and the outer rotor is kept in rolling friction. The pump is steady to operate, good in sealing property and high in working efficiency and has a self absorption capacity. The pump can be used for effectively reducing abrasion and heat loss and conveying various types of fluids. Due to extensive uses, the pump can be used for converting fluid energy into mechanical energy, converting the mechanical energy into the fluid energy, converting the fluid energy into the mechanical energy and then converting the mechanical energy into the fluid energy, and converting the mechanical energy into the fluid energy and then converting the fluid energy into the mechanical energy.

The invention relates to an air filter of an automobile. The air filter of the automobile comprises a lower shell, wherein the top of the lower shell is provided with an upper shell through a latch structure and a clip; a filter element is arranged in the upper shell and the lower shell; a partition is arranged at one end of the lower shell; an adjusting valve is arranged in the middle of the partition; and an adjustable cavity is formed between the partition and the lower shell. The air filter of the automobile is compact and reasonable in structure and is high in filtering efficiency; and by the adjustable cavity, the size of the whole air filter can be changed by adjusting the opening of the valve according to actual flowing speed of fed air, and the purposes of reducing air pressure fluctuation, improving the air feeding effect and reducing air feeding noise are achieved.