15results about How to "Stable output pressure" patented technology

The utility model discloses a shock wave discrete rotary valve, which relates to the technical field of hydraulic valve banks and comprises a valve body, a valve core, a shock wave buffer and a sensor, the valve body is provided with an oil inlet runner, a recovery channel and an oil outlet runner; the valve element comprises a rotating shaft, a rotary disc and a plurality of rotary cups. The rotary disc is fixedly connected to the middle of the rotating shaft, and the multiple rotating cups are connected to the periphery of the rotary disc at equal intervals. The sensor is arranged on the valve body; the axial leads of the oil inlet flow channel and the oil outlet flow channel are collinear and are tangent to the movement track of the center of the revolving cup; a recovery channel is formed in the tangent position in the radial direction of the valve element. A shock wave buffer is arranged at the bottom of the recovery channel. Oil liquid containing shock waves impacts the revolving cup through the oil inlet flow channel, the shock waves rapidly expand in the revolving cup and are splashed out, the oil liquid enters the recovery channel under the centrifugal effect of revolving of the revolving cup, shock wave energy is absorbed by the shock wave buffer, and part of the remaining oil liquid in the revolving cup is thrown into the oil outlet flow channel under the impact rotation and centrifugal effect of the revolving cup. And one part enters the next impact cycle along with the rotation of the revolving cup.

The utility model relates to the technical field of hydrogen energy sources, in particular to a 70MPa hydrogen integrated two-stage pressure reduction control device which comprises a valve body, and a gas inlet channel, a high-pressure channel, a first-stage pressure reduction channel, a second-stage pressure reduction cavity and a gas outlet channel are formed in the valve body. The electromagnetic valve is arranged on the side of the valve body, an inlet of the electromagnetic valve communicates with the air inlet channel, and an outlet communicates with the high-pressure channel; the first-stage piston type pressure reducing mechanism is arranged on the valve body, an inlet of the first-stage piston type pressure reducing mechanism communicates with the high-pressure channel, and an outlet communicates with the first-stage pressure reducing channel; the second-stage diaphragm type pressure reducing mechanism is arranged at the top of the valve body, the outlet end of the second-stage diaphragm type pressure reducing mechanism is communicated with the second-stage pressure reducing cavity and can input pressure-reduced gas into the second-stage pressure reducing cavity, and the inlet end of the second-stage diaphragm type pressure reducing mechanism is communicated with the first-stage pressure reducing channel; and the second-stage pressure reducing cavity is connected with the air outlet channel. By means of the unique two-stage pressure reduction structural design, stable pressure reduction output of 70 Mpa hydrogen can be effectively achieved, and the structure is stable and compact.

The utility model discloses a double-pump coating machine, which comprises a frame, a driving motor, a gearbox and two plunger pumps, the driving motor and the gearbox are arranged on the frame, a main driving gear, a two-stage variable gear, two crankshaft gears and two output crankshafts are arranged in the gearbox, the main driving gear is connected with an output shaft of the driving motor, and the two output crankshafts are connected with the two-stage variable gear. A large gear in the secondary change gear is in meshing transmission with the main driving gear, a small gear in the secondary change gear is in meshing transmission with the two crankshaft gears, the two crankshaft gears drive the two output crankshafts to rotate respectively, driving swing arms are arranged at the upper ends of the plunger pumps and connected with the output crankshafts, and the driving swing arms move up and down in a reciprocating mode to drive the two plunger pumps to work. The output ends of the two plunger pumps are connected with the filter through discharging pipes respectively, and the filter is connected with the two spray guns through two independent pipelines respectively. The driving structure of the two plunger pumps is more stable and reliable, and the output pressure is more stable; and the whole machine is more compact and portable in structure.

The utility model relates to automatic filling and pressurizing equipment for a perfluorohexanone fire extinguishing agent. The equipment comprises a control cabinet body, an industrial control computer, a PLC (Programmable Logic Controller), a stainless steel multi-stage centrifugal pump, a pneumatic high-pressure ball valve, a pneumatic electromagnetic valve, a pressure instrument, a pressure reducing valve, a pressure sensor, a flow sensor, a weighing transmitter, a temperature and humidity sensor, a micro-moisture sensor, a pneumatic pipeline, a fire extinguishing agent conveying pipeline, an electric control circuit and the like. Client control software is installed in an industrial control computer, an automatic control program is installed in a PLC, the industrial control computer is in communication connection with the PLC, and a stainless steel multi-stage centrifugal pump, a pneumatic electromagnetic valve, a pressure sensor, a flow sensor, a weighing transmitter, a temperature and humidity sensor and a micro-moisture sensor are connected with the PLC through an electric control circuit. The automatic closed filling pressurizing control device is specially suitable for automatic closed filling pressurizing control of liquid fire extinguishing agents such as perfluorohexanone, the technology is advanced and feasible, and data are accurate and reliable.

The utility model discloses auxiliary equipment for artificial blood vessel dilatation, which comprises a base, a mounting plate is fixedly arranged at the upper end of the base, a pressure pump is fixedly arranged on the upper surface of the base, a switching cylinder is fixedly arranged on the upper surface of the mounting plate, a switching mechanism is arranged in the switching cylinder, and the switching mechanism is arranged on the upper surface of the mounting plate. The operation process is simplified through the design of pressing rotation. According to the auxiliary equipment for artificial blood vessel dilatation, the output pressure of the pressurizing pipe is monitored by arranging the detection box on the mounting plate and rotating the switching wheel in the detection box in cooperation with supporting of springs with different rigidities on the piston plate, and the stability of the output pressure is guaranteed by adjusting the pressure pump and secondarily monitoring the detection box; by means of the mode that the pressing plate is extruded downwards and rotated, the two switching pipes can communicate the pressure reducing pipe and the pressure increasing pipe with the connecting pipe through rotation, then a complex opening structure is omitted, and the device is convenient to use.

This utility model discloses an electromagnetic pump for a kitchen appliance burner, relating to the field of electromagnetic pump technology. It includes a pump body with an inlet chamber, a first oil chamber, a pressure-stabilizing oil chamber, and a second oil chamber. The first oil chamber connects the inlet chamber and the pressure-stabilizing oil chamber, and a one-way valve is provided between them. The pressure-stabilizing oil chamber is connected to the second oil chamber. A pressure-stabilizing component is connected to the pressure-stabilizing oil chamber. One end of the outer casing is connected to the pump body, and the other end has an outlet. The electromagnetic component is located inside the outer casing, between the second oil chamber and the outlet. In use, fuel enters through the inlet and flows sequentially through the inlet chamber, the first oil chamber, and the pressure-stabilizing oil chamber, finally entering the second oil chamber. The electromagnetic component pressurizes the fuel in the second oil chamber, and the fuel is then ejected through the outlet. During this process, the pressure-stabilizing component in the pressure-stabilizing oil chamber within the pump body effectively reduces pressure fluctuations and minimizes the interference of the inlet pressure on the outlet pressure, thereby making the output pressure more stable and meeting the high-precision control requirements of combustion power.

This invention provides a drug nebulization device and method, relating to the field of medical device technology. It includes a housing, within which a reciprocating motor, a transmission connector, and a negative pressure generator are housed. The cylinder of the negative pressure generator is connected to a suction tube with a one-way valve and an outlet tube. The suction tube extends into the drug receiving area, and the outlet tube connects to the nebulizer. The device also includes a drug bottle fixing device, a drug inlet / outlet, a detachable mask, a handle with a built-in battery compartment, a nebulization button, a positioning device, and an audible alarm. The nebulization method is as follows: the drug bottle is placed and fixed, the reciprocating motor is started, driving a piston to reciprocate. The change in cylinder volume, combined with the one-way valve, achieves negative pressure quantitative drug intake and positive pressure delivery of the drug solution for nebulization. After operation, the piston returns to its original position. This invention relies on motor drive to replace manual energy storage, making operation simple, providing accurate drug dosage, stable transmission, and also featuring a device location function, resulting in excellent overall performance.

This invention provides a dual-mode propulsion system in the field of space propulsion technology, combining xenon propellant electric propulsion and cold gas propulsion. The system comprises a gas storage module and a pressure regulation module connected in series, with an electric propulsion module and a cold gas propulsion module connected in parallel downstream. These modules are controlled by a control and power module, which is shared by both electric and cold gas propulsion. Its advantages include solving the problem of insufficient control torque compared to a single electric propulsion system. Furthermore, because xenon is used as the working propellant, the xenon required for cold gas propulsion and electric propulsion serves as a backup for each other, resulting in high system integration. This meets the stringent limitations of satellite propulsion system size and control resources. Compared to an independent cold gas propulsion system, it achieves stable adjustment of the cold gas thruster's thrust over a wide range. Additionally, the system employs isentropic expansion decompression, reducing energy loss during decompression and lowering the power consumption required for temperature control.

The invention relates to the technical field of hydrogen storage, in particular to a multistage solid hydrogen storage system and method based on photo-thermal regulation and control and temperature difference utilization, and the system comprises a photo-thermal conversion cavity, at least one part of the photo-thermal conversion cavity is a light-transmitting window, the inner surface of the photo-thermal conversion cavity is provided with a solar energy absorption coating, and the solar energy absorption coating is used for receiving and converting solar radiation energy into heat energy; and the first-stage hydrogen storage container is arranged in the photo-thermal conversion cavity so as to directly or indirectly receive heat. According to the system, free solar energy is directly used as a primary heat source in the hydrogen desorption process, and the night low-temperature environment is used as a natural cold source in the hydrogen absorption process, so that the traditional electric heating and mechanical refrigeration modes are fundamentally abandoned, the operation energy consumption is greatly reduced and even eliminated, and the energy consumption is reduced. Meanwhile, the hydrogen desorption and heat absorption process of the system is coupled with solar heating in the daytime, the hydrogen absorption and heat release process is coupled with environment cooling at night, and intelligent switching between natural heating and natural cooling is achieved.

The present invention discloses a servo energy-saving internal rotating gear pump, comprising a pump body, a front cover arranged at the front end of the pump body and a rear cover arranged at the rear end of the pump body, the front cover having an oil inlet and an oil inlet channel, when the fluid is sucked into the pump body chamber from the oil inlet and through the oil inlet channel, or when the high-pressure fluid discharged from the pump body chamber through the oil outlet channel reaches the oil outlet, it is not necessary to pass through the through hole on the inner gear ring, and no turbulent flow obstruction will be formed, the fluid output from the oil outlet is the oil outlet channel, which guides the high-pressure fluid flowing out of the pump body chamber into the oil outlet in a direction parallel to the axial direction of the outer gear shaft, and the high-pressure fluid formed by the pressure can pass through the side wall of the pump body chamber and through the oil outlet channel and the oil outlet to flow out in large quantities and quickly, and can stably output the pressure and flow of the fluid, especially at high pressure and low speed, thereby improving the superior performance of the servo energy-saving pump at high pressure and low speed.

The utility model provides a hydraulic signal filtering device and a feedback hydraulic system, the hydraulic signal filtering device comprises a shell, a cylindrical valve cavity is arranged in the shell, two ends of the valve cavity are respectively provided with an external channel, and the flow area of the external channel is smaller than that of the valve cavity; a throttling core capable of moving in the axial direction of the throttling core is arranged in the valve cavity, and a gap channel is formed between at least one side of the throttling core and the inner wall of the valve cavity. Bosses are arranged at the two ends of the throttling core respectively, the small ends of the bosses can stretch into the external channel, and throttling grooves are formed between the side faces of the bosses and the inner wall of the external channel. According to the utility model, the two ends of the valve cavity are respectively and independently concentrated with oil, so that the pressure change speed is respectively slowed down; the circulation area of the feedback oil liquid changes for many times, and the superposition filtering effect is achieved; therefore, the hydraulic signal fed back to the variable pump changes gently, and it is guaranteed that the output pressure of the variable pump is stable.

The application relates to a kind of agricultural strong self-priming pumps, belonging to the technical field of self-priming pump;Including upper liquid storage pipe and lower liquid storage pipe, upper liquid storage pipe and lower liquid storage pipe are fixedly connected by connecting seat, and communication groove and backflow hole are arranged on the connecting seat, water-cooled water-filled motor is fixedly arranged in the inside of upper liquid storage pipe, the output shaft of water-cooled water-filled motor is downwardly inserted into the inside of lower liquid storage pipe and fixedly arranged with multiple groups of impeller assemblies;Liquid inlet pipe and blowdown pipe are respectively arranged on the two sides of lower liquid storage pipe, constant pressure filter assembly is arranged on the inlet end of liquid inlet pipe, blowdown assembly is arranged in the inside of blowdown pipe;Multiple protection cylinders are fixedly arranged on the outside lower end of lower liquid storage pipe, a group of fixed assemblies are arranged in the inside of each protection cylinder;Liquid outlet pipe is fixedly arranged on one side of upper liquid storage pipe;Solve the current self-priming pump work easily tilt subsidence, easy to block, need to reinfuse liquid when restarting, discharge pressure is too large, and the service life of impeller is short.

The invention discloses a wide-flow continuous mixing system, which comprises: a mixing tank, the top, the side surface and the bottom of which are respectively provided with a feed inlet, a liquid inlet and a liquid outlet; an outlet of the liquid inlet pipe communicates with the liquid inlet through a first branch pipe, and a flow meter is installed on the liquid inlet pipe and used for measuring the flow in the liquid inlet pipe; the liquid outlet pipe is arranged below the mixing tank and penetrates in the liquid outlet direction to form a liquid outlet front end and a liquid outlet rear end, an inlet is formed in the middle of the liquid outlet pipe, and the liquid outlet pipe is communicated with the liquid outlet through a liquid outlet branch pipe; the second branch pipe is communicated with the liquid inlet pipe and the liquid outlet front end; the two control valves are installed on the first branch pipe and the second branch pipe respectively, and any control valve is used for adjusting the flow in the corresponding branch pipe; and the controller is electrically connected with the flow meter and the control valve. According to the invention, a liquid inlet shunting structure is combined with an active grading adjusting mode, so that the flow adjusting capability of the mixing system is effectively improved, and the continuous, uniform and stable mixing requirements of sand liquid in a wider flow range are adapted and met.

The utility model relates to the technical field of air compressors, and discloses an improved air inlet structure of an air compressor, which comprises an air inlet cylinder, the bottom of the air inlet cylinder is fixedly connected with a sealing plate, the inner side of the air inlet cylinder is provided with a filtering mechanism, and the filtering mechanism is used for filtering air. An adjusting mechanism is arranged on the left side of the air inlet cylinder and used for adjusting the air inlet amount, the filtering mechanism comprises a bearing cylinder, the outer wall of the bearing cylinder is in sliding connection with the inner wall of the air inlet cylinder, an ultra-fine filtering cylinder is installed at the bottom of the inner side of the bearing cylinder, and a fine filtering cylinder is installed at the top of the ultra-fine filtering cylinder. According to the utility model, when air is introduced into the air inlet cylinder through the air inlet pipe, the air is conveyed downwards through the blower, is sequentially filtered through the coarse filter cylinder, the fine filter cylinder and the superfine filter cylinder, and then is communicated into the compressor through the air outlet pipe, so that the air entering the compressor is ensured to reach the clean standard, the replacement period is prolonged, and the maintenance cost is reduced.

The utility model discloses an electronic-grade polycrystalline silicon conveying system, which relates to the technical field of polycrystalline silicon production, and comprises a material input unit, a pneumatic diaphragm pump and a heater, an input port of the material input unit is connected to a heating inlet of the heater, and a heating outlet of the heater is connected with an inlet unit of the pneumatic diaphragm pump; a first outlet unit of the pneumatic diaphragm pump is configured to output a target material; the diaphragm assembly of the pneumatic diaphragm pump is made of PTFE. The electronic-grade polycrystalline silicon conveying system provided by the utility model can realize a simple, efficient, low-cost, clean and energy-saving conveying system for the electronic-grade polycrystalline silicon.