15results about How to "Precise pressure control" patented technology

The application discloses a leveling device and method for bridge support assembly and belongs to the technical field of bridge support assembly; the leveling device comprises a supporting frame, a conveyor and a pressure applying and leveling assembly; the pressure applying and leveling assembly applies pressure through a leveling oil cylinder, then height adjustment and state detection are realized with the help of the leveling oil cylinder and a distance sensor, and a pressure sensor is arranged between the leveling oil cylinder and a horizontal fixing plate to monitor pressure; manual operation is replaced by mechanical automation, the efficiency of bridge support assembly is remarkably improved, accurate measurement and control are realized through the sensor, human errors are avoided, leveling precision and assembly quality are improved, human cost and labor intensity are reduced, and reliable guarantee is provided for bridge support assembly.

The utility model discloses a kind of slurry flow control system for shield machine and shield machine with it, comprising: the slurry cabin of being laid in the shield body of shield machine, and the transition cabin, grouting system and slurry discharge system of being laid outside shield machine, and air pressure control system. Transition cabin is equipped with liquid level detector for detecting the liquid level in it and first pressure detector for detecting the pressure in it, and transition cabin is connected with air pressure control system to adjust the air pressure in it, and transition cabin is also connected with slurry cabin, to control slurry cabin pressure by slurry pressure and air pressure in transition cabin, and then make slurry cabin pressure match face water and soil pressure. Transition cabin and slurry cabin are also connected with grouting system to inject slurry respectively, and slurry cabin is also connected with slurry discharge system to discharge slurry outward. The new system can ensure the stability of liquid level and air pressure in transition cabin, and then control the stability of slurry cabin pressure, so that slurry cabin pressure matches face water and soil pressure.

This invention discloses a smart meter durability testing device, belonging to the field of meter testing technology. It includes a test stand, on which a simulation test unit, a tightening variable control unit, and a data observation unit for detecting test results are installed. This invention uses high and low temperature testing, damp heat cycling testing, and salt spray corrosion testing modules in the simulation test unit to simultaneously simulate multiple extreme environments, accurately assessing the durability of the meter under complex operating conditions. Through a magnetically controlled connector combined with a tightening motor, the tightening stroke and pressure of the terminal screws can be precisely controlled, thereby exploring the impact of different tightening forces on the durability of the smart meter's terminals. A digital display power monitor synchronously records power consumption with the smart meter, directly comparing the test data with the actual value to quickly identify metering deviations. A camera periodically captures data from the display screen, tracking the meter's performance changes at different test stages and accurately locating the time point of failure.

The application relates to a purging device for a liquid preparation system and relates to the technical field of medicine liquid preparation. In order to solve the problem that a traditional purging device cannot completely purge, the purging device comprises a conveying pipeline, the inlet end of the conveying pipeline is provided with a compressed air supply source, the outlet end of the compressed air supply source is sequentially and serially provided with a pressure reducing valve and an electric heater along the conveying pipeline, a plurality of heating modules are arranged in the electric heater, the plurality of heating modules are vertically stacked along the height direction of the electric heater, a heating channel is formed in the electric heater from bottom to top, and a temperature gradient from low to high is formed when the compressed air flows through the heating channel. The application has the effects of effectively stripping the residual moisture on the surface of the system, improving the removal rate of the residual moisture and solving the microbial pollution risk caused by incomplete purging.

An oxygen-enriched gas system, comprising a low-pressure oxygen inlet manifold, the low-pressure oxygen inlet manifold being connected with a plurality of single-system inlet pipes, the single-system inlet pipes being connected with a mixer, the mixer being further connected with a single-system fan; a total cut-off valve, a total pipe pressure gauge and a total pipe temperature gauge are arranged on the low-pressure oxygen inlet manifold; a single-system cut-off valve, a Venturi flowmeter and a single-system regulating valve are arranged on the single-system inlet pipe. The oxygen-enriched gas system is provided, the total cut-off valve, the total pipe pressure gauge and the total pipe temperature gauge are arranged on the low-pressure oxygen inlet manifold, the single-system cut-off valve, the Venturi flowmeter and the single-system regulating valve and other components are arranged on the single-system inlet pipe, and the intelligent linkage is realized by cooperating with a main controller, the flow and the pressure can be accurately regulated and controlled, the oxygen temperature and the oxygen concentration are monitored in real time, and the interlocking protection is realized when the abnormality occurs.

This utility model relates to the field of filter cloth cleaning technology, and proposes a gypsum cleaning device for a dewatering machine and a dewatering machine. The gypsum cleaning device for the dewatering machine includes: a scraper, a crossbeam, a fixed side plate, a main beam, and turnbuckles; the scraper is fixedly connected to the crossbeam, the crossbeam is rotatably mounted in the fixed side plate, and the fixed side plate is fixedly connected to the main beam; swing arms are fixedly connected to both ends of the crossbeam, each swing arm is fixedly connected to a chain, each chain is connected to a torsion spring through a turnbuckle, and each torsion spring is mounted on the main beam; a conveyor roller is rotatably mounted on the main beam, and a filter cloth is placed on the conveyor roller; the torsion springs indirectly apply an elastic force to the crossbeam to rotate it until the scraper and the filter cloth are in contact. With the cooperation of the swing arms, chains, and turnbuckles, this device achieves automatic adjustment of the distance between the scraper and the filter cloth. It can precisely control the angle and pressure of the scraper, allowing solid gypsum to separate smoothly from the surface of the filter cloth, effectively preventing damage to the filter cloth due to excessive local pressure.

This utility model discloses a cranial flap resuscitation and perfusion device, including a workbench with a platform plate fixedly connected to the top of the workbench; a perfusion mechanism is provided on the top of the platform plate, and a sealing component is provided inside the perfusion mechanism; wherein, the perfusion mechanism includes an insulated box fixedly installed on one side of the top of the platform plate, and an inner liner is embedded in the inner side of the insulated box, and a liquid addition pipe is fixedly connected between the top of the insulated box and the inner liner, thereby enabling precise control of the temperature, flow rate and pressure of the perfusion fluid, simulating the human physiological environment, providing good resuscitation conditions for the isolated cranial flap, effectively maintaining the activity of cranial flap bone cells, improving the survival rate of cranial flap after reimplantation, reducing the incidence of postoperative complications such as bone flap necrosis and infection, greatly improving the efficiency of cranial flap repair and cleaning, and reducing the workload of staff.

The utility model relates to mechanical engineering technical field discloses the gluing and pressing device for corrugated paper production, including processing board, the right side of the top of processing board is provided with the pressing mechanism, the pressing mechanism is used for pressing to corrugated paper, the left side of the top of processing board is provided with the coating mechanism, the coating mechanism is used for gluing to corrugated paper, the pressing mechanism includes fixed plate no.

This utility model belongs to the field of lifting clamp technology, specifically disclosing a lifting clamp for a steel rolling mill, including: an assembly ring, a first connecting rod, a first rotating frame, a first gripper, a first limiting rod, and a limiting frame; a protective component, which includes a first fixed frame, a first rotating rod, a chain, a second fixed frame, and a second rotating rod. The first fixed frame is fixed to one side of the limiting frame, the first rotating rod rotates and passes through the interior of the first fixed frame, the chain passes through the lower end of the first rotating rod, the second fixed frame is fixed to the other side of the limiting frame, the second rotating rod rotates and passes through the interior of the second fixed frame, a fixing hole is opened at the lower end of the second rotating rod, and a fixing rod passes through the fixing hole; one end of the fixing rod has a slot. This utility model has the advantage of ensuring that the workpiece is securely fixed to the lifting clamp during the lifting process, greatly reducing the risk of safety accidents caused by workpiece slippage or shaking, and improving the safety of workpiece lifting.

The utility model discloses a kind of hydraulic system special for color cosmetic pencil, comprising: oil tank, motor is fixedly installed on the upper surface of the oil tank, the output end of motor is connected with shaft coupling, shaft coupling is externally sleeved with bell cover, the end portion of shaft coupling is drivingly connected with oil pump, oil pump is constant power pump, air cooler is also fixedly installed on the upper surface of oil tank, air cooler is connected with the inside of oil tank and oil pump by pipeline, oil passage block, oil return filter and oil filler are also installed on the upper surface of oil tank, oil passage block is connected with oil pump and oil return filter respectively by pipeline, first electromagnetic reversing valve is fixedly arranged on the top of oil passage block, pressure relay and throttle valve are installed on the oil passage block, throttle valve is connected with oil cylinder and pressure relay, second electromagnetic reversing valve is installed on the throttle valve.The utility model monitors liquid level and liquid temperature in oil tank in real time and cooperates with air cooler, temperature control is carried out to hydraulic oil, the constant temperature of hydraulic oil is guaranteed, the stability of hydraulic system is improved, and the precise control of pressure is realized.

This invention relates to the field of subway air conditioning testing technology, specifically disclosing an air conditioning pipeline sealing test device, comprising: a sealing cover, an inflation port, a vent, an electronic pressure gauge, and a connecting pipe. Two sealing covers are provided; one sealing cover has an inflation port communicating with its inner cavity at its front bottom, and the other sealing cover has a vent port communicating with its inner cavity at its front bottom. The electronic pressure gauge is positioned at the front top of one of the sealing covers, and its inner cavity is connected to the inner cavity of the sealing cover. The connecting pipe is located at the front middle of the sealing cover, and its inner cavity is connected to the inner cavity of the connecting pipe. This device can quickly and accurately detect the sealing performance of subway air conditioning pipelines and rapidly locate the leak point when a leak is detected, improving testing efficiency and accuracy while reducing maintenance costs and time.

The application belongs to the technical field of water treatment, and particularly relates to an ultrasonic-assisted micro-nano bubble dispersion and dissolution system for water treatment, which comprises an ozone generation unit, an ultrasonic generation unit, a micro-nano bubble generation unit, a circulating fluidized bed reaction unit and a temperature and pressure control unit. The ozone generation unit comprises an ozone generator, an ozone concentration detector and an ozone conveying pipeline, and the ozone concentration detector is arranged on the ozone conveying pipeline and used for monitoring the ozone concentration conveyed to the micro-nano bubble generation unit in real time. The application integrates the functions of ultrasonic-assisted micro-nano bubble generation, an efficient catalyst system, a circulating fluidized bed reaction and precise temperature and pressure control, realizes efficient dispersion and dissolution of ozone, strengthens the synergistic effect of adsorption and catalytic oxidation, significantly improves the removal efficiency of refractory organic pollutants in water, realizes cyclic utilization of ozone resources, and reduces operation cost and environmental risk.

This utility model relates to the field of film application technology and discloses an adjustable film application assembly machine, including a film application assembly machine body. A film application component is fixedly installed on the top of the film application assembly machine body. The film application component includes a fixing plate fixed to the top of the film application assembly machine body. An installation plate is movably installed inside the fixing plate, and a push rod is fixedly installed on the front of the installation plate. Compared with traditional film application assembly machines, this utility model facilitates the installation of the film-limiting frame through the cooperation of positioning holes, positioning rods, and springs. This allows for rapid adaptation to diverse film application needs. By replacing the film-limiting frame, it can easily accommodate film materials of different specifications and materials, and can switch between multiple film application modes without large-scale equipment modifications. Convenient installation reduces downtime, allows for rapid response to production task switching, and significantly improves production efficiency. The modular design simplifies the maintenance process.