71results about How to "Control air pressure" patented technology

The invention discloses a jet yarn spinning device for an electrostatic spun nano fiber, which includes a collecting device, wherein two thread jetting devices are arranged on the two sides of the collecting device and connected with a high-voltage electrostatic generator; a buncher is arranged below the collecting device; the two thread jetting devices are arranged between the collecting device and the buncher and symmetrically and oppositely arranged along the axis; a jet nozzle twister is arranged below the buncher; a delivery roller is arranged below the jet nozzle twister; a winding mechanism is arranged below the delivery roller; and the collecting device, the buncher, the jet nozzle twister and the delivery roller are arranged along the same axis from top to bottom. The electrostatic spun nano fiber spinning device integrates thread jetting, collecting, drawing, twisting and winding, and can continuously prepare the electrostatic spun nano fiber yarns. The nano fiber spinning method has simple process, high yarn yield, is suitable for multiple polymer yarn solutions, and realizes the continuous and scaled preparation of the nano fiber yarns.

This invention relates to passive gas chamber pressure flexible polishing tool, which comprises the following parts: one gas chamber with polishing math as work surface on front end installed in one sustaining rack; the said sustaining rack is installed on one rotation axis connected with one cover tube; the said cover tube is connected to the drive axis with outer source entrance and overflow valve; the cover tube drive axis is opened with gas channel connected to the gas chamber. The invention provides one mode curve polishing tool with high efficiency and quality.

The invention provides a vibration damper of a swing blade gust generator. The vibration damper comprises a constant pressure valve, an exhaust pipe, an intake pipe, an intermediate inflatable soft board, an upper partition plate, a lower partition plate and two groups of compression springs, wherein a radial displacement gap is formed between a rotating shaft of a swinging blade and a bearing; the upper partition plate and the lower partition plate are positioned in the radial displacement gap; the intermediate inflatable soft plate is mounted between the upper partition plate and the lower partition plate; the two groups of compression springs are further located between the upper partition plate and the lower partition plate and located on the two sides of the intermediate inflation soft plate; the exhaust pipe and the intake pipe are connected with the intermediate inflation soft plate; and the constant pressure valve sets a pressure value according to the swing frequency and angleworking conditions of the swing blade and controls the air pressure in the intermediate inflation soft plate. According to the vibration damper, the bearing clearance of the rotating shaft of the gust generator can be suppressed according to the operating frequency and the operating angle of the swing blade gust generator, the vibration amplitude of the swing blade gust generator during working is effectively reduced, and the working efficiency of the swing blade gust generator is improved.

The embodiment of the invention discloses a method and device for controlling car seat back cushions and car seats. The method comprises the steps of receiving driving car input information, generating an inflation instruction or a deflation instruction according to the driving car input information, and controlling inflation parts to inflate or deflate airbags of the back cushions according to the inflation instruction or the deflation instruction. According to the provided method and device for controlling the car seat back cushions and the car seats in the embodiment, by adjusting the air pressure in the airbags in the back cushions, passengers can adjust the softness and hardness degree of the seat back cushions according to their own preference, and requirements of different passengers for the comfort degree can be better met.

The invention provides an ozone generation and purification system. The ozone generation and purification system comprises an oxygen supply device, an ozone generation device, an ozone separation device, a control device and a gas path pipeline; the oxygen supply device can provide oxygen; the ozone generation device can electrolyze oxygen into mixed gas containing oxygen and ozone; the ozone separation device can separate ozone in the mixed gas, and an ozone adsorption device is arranged in the ozone separation device; the oxygen supply device, the ozone generation device and the ozone separation device are sequentially communicated through a gas path pipeline, and the gas path pipeline comprises a plurality of branch pipelines; the control device can control the branch pipelines to be opened or closed, and the control device can regulate and control the air pressure of the plurality of branch pipelines. The ozone adsorption device is arranged in the ozone separation device of the ozone generation and purification system, ozone can be collected, the control device can control the plurality of branch pipelines to be opened or closed, the air pressure of the plurality of branch pipelines is regulated and controlled, increase of the air path pressure is effectively prevented, and the safety coefficient is high.

The invention discloses a pressure stabilizing sampling device. The pressure stabilizing sampling device comprises a sampling pipe, a pressure stabilizing cavity, a control system and a gas monitoring meter; the sampling pipe is communicated with a gas inlet of the pressure stabilizing cavity; one way of the pressure stabilizing cavity is connected with multiple branch pipes; each branch pipe is communicated with the gas monitoring meter; the gas charge end of the sampling pipe is sequentially provided with a first flow rate meter and a flow limiting device; the pressure stabilizing cavity is connected with the vacuum pump by a gas introducing pipeline; the gas introducing pipeline is provided with a second flow rate meter and a proportion regulating valve. The pressure stabilizing sampling device provided by the invention can enable the sample charge pressure to be kept at a constant value so as to guarantee the sample charge repeatability; the internal pressure of an instrument can be regulated by the pressure stabilizing cavity and a regulating device, so that the pressure intensity in the instrument keeps a constant value; the aerial survey flight height environment requires that calibration is not necessary in the condition of being lower than the constant value, so that the uncertainty caused by pressure change due to the height change of an aircraft is reached, and the data precision of the gas monitoring instrument in aerial survey is improved.

The invention provides a grain drying system, which includes a grain dryer, a hot air stove and a grain drying control system; the grain drying system includes a humidity sensor for detecting the humidity of hot air, a wind pressure sensor for hot air pressure, a processing module and an output module; The temperature sensor, the wind pressure sensor and the output module are respectively connected to the processing module; the grain dryer is connected to the hot stove, and the grain dryer is provided with an exhaust fan; the output module is connected to the The hot blast stove and the exhaust fan. This scheme can improve the drying efficiency of grain.

The invention relates to an air-spring-based semi-active control hydraulic suspension. Through the air-spring-based semi-active control hydraulic suspension, the problem that the bandwidth of absorbable vibration frequency bands is small when an engine suspension absorbs external vibration is solved. The air-spring-based semi-active control hydraulic suspension achieves the effects of being capable of conducting full-band absorption on the absorbable vibration frequency bands from low frequency to high frequency, reducing vibration noise in a cab and improving the riding comfort. The air-spring-based semi-active control hydraulic suspension is composed of an upper suspension assembly, a lower suspension assembly and a cylindrical gas chamber. A suspension internal cavity is divided into anupper liquid chamber, a middle liquid chamber and a lower liquid chamber by an inertia channel and decoupling membranes. A T-shaped groove inertia channel can increase throttling loss and return lossof liquid flowing through the internal cavity and increase damping force. The cylindrical gas chamber formed by the two decoupling membranes communicates with an external piston. The direction and magnitude of current in an electromagnetic coil in the piston can be adjusted to realize up-down movement of the head of the piston, so that the pressure intensity of gas in the cylindrical gas chamberis adjusted, the rigidity of the decoupling membranes is dynamically adjusted, and the autokinetic degree of the suspension is dynamically changed finally. Accordingly, the purpose of full-band vibration absorption is achieved.

The invention discloses a microfluidic pulmonary alveolus chip and a pulmonary alveolus respiration simulation device. The microfluidic pulmonary alveolus chip comprises a microfluidic channel, a gascavity and a simulated pulmonary alveolus, wherein the microfluidic channel comprises a simulated pulmonary alveolus pipeline, an auxiliary liquid inlet channel and an auxiliary liquid storage channel, a fluid inlet and a fluid outlet are formed in two ends of the simulated pulmonary alveolus pipeline, the fluid inlet communicates with the auxiliary liquid inlet channel, the fluid outlet communicates with the auxiliary liquid storage channel, a liquid inlet is formed in the auxiliary liquid inlet channel, a gas inlet/outlet is formed in the gas cavity, the simulated pulmonary alveolus comprises an inner cavity and an elastic side wall, the inner cavity is communicated with the simulated pulmonary alveolus pipeline; and the simulated pulmonary alveolus is arranged in the gas cavity. According to the invention, the micro-fluidic pulmonary alveolus chip is simple in structure, and parameters can be independently controlled by adopting a micro-fluidic chip with a single pulmonary alveolusstructure so as to independently research a complex flow field in each level of pulmonary alveolus, so that mutual interference and mutual restriction among all levels of flows are avoided, and the research accuracy is improved.

The invention discloses a boiler burning system, which can return part of ash to a boiler through an ash returning device, and the other part of ash is discharged from an ash outlet, so as to achieve control over an ash returning amount, in addition, through arranging an air tube, heat of tailgas is absorbed and is returned back to a charging system for heating coal, the coal can be preheated, air of an igniter can be preheated, the igniter can be ignited more easily, and the other part is flushed and comes back to the boiler, such that the air entering the boiler is air instead of cold air, preheating is not required, no damage is generated to the boiler, loss of burning heat of the coal is reduced, and a use rate of the heat energy is improved.

Belonging to the technical field of product safety and detection, the invention in particular relates to a detection method for an antibacterial agent in a textile product. The method takes triclocarban, alpha-bromocinnamaldehyde, 2-(4-thiazole)-benzimidazole, and 4-chloro-3-methylphenol as the antibacterial agent target compounds to detect the residual amount of the antibacterial agent target compounds by the steps of: taking a representative sample, cutting the sample into 0.5-1.5g small pieces, adding 50-200mL of ethanol and performing Soxhlet extraction for 1.5-3h; then taking the extracted liquid to perform detection; specifically, employing a C18 column, adopting a mobile phase including acetonitrile and deionized water, and keeping the column temperature at 25-35DEG C; selecting a diode array detector as the detector; controlling the detection wavelength at 265, 300, 300, and 230nm respectively; and employing an improved Soxhlet extractor as for Soxhlet extraction, with the Soxhlet extractor including an outer tube and an inner tube that are sleeved together, and the upper end grinding port of the inner tube being connected to a condenser. The method provided by the invention has high efficiency in extraction and detection analysis of the antibacterial agent in the textile product.

The invention discloses a welding sealing system. The device comprises a gas filling module, a baking module, a welding module and a conveying module, the vapor content of less than 100PPM in the device can be realized, the internal gas pressure of the packaging body can be controlled within +/-500Pa, the purity of the backfill process gas is ensured to be higher than 99.5%, and the sealing requirements of military special processes such as energy storage welding sealing and the like are met. The four modules of the welding sealing system can operate independently and can also work cooperatively, the automation degree is high, and the mass production requirement can be met. The invention further discloses a welding sealing process, and the welding sealing system is applied, so that energystorage welding sealing of low-water-vapor and high-purity process gas can be realized.

The invention discloses a high-efficiency energy-accumulation pressure booster which comprises at least one energy-accumulation unit, wherein the energy-accumulation unit comprises an energy-accumulation cylinder and a plurality of gas tanks. The high-efficiency energy-accumulation pressure booster is characterized in that the energy-accumulation cylinder is divided into two cavities which are independent from each other through a partition, and a piston component is arranged in the cylinder body; the piston component comprises a first piston, a second piston and a connecting rod; the first cavity is divided into a first air chamber and a first hydraulic storage chamber through the first piston; a first oil inlet and a first oil outlet are formed in the first hydraulic storage chamber; the second cavity is divided into a second air chamber and a second hydraulic storage chamber through the second piston; a second oil inlet and a second oil outlet are formed in the second hydraulic storage chamber; the first oil outlet is in control connection with an oil return tank or a hydraulic cylinder of a hydraulic machine through a first electric-control valve; the second oil outlet is in control connection with the hydraulic cylinder of the hydraulic machine through a second electric-control valve. By adopting the high-efficiency energy-accumulation pressure booster, initial pressure is reduced, an output oil pressure multiplicative effect can be achieved, danger is reduced, and equipment can be relatively conveniently maintained.

The present invention provides a system for simultaneously performing non-destructive laser speckle detection on multiple carrier based plane tires. The system comprises: a rotation column arranged atthe center axis of a plurality of coaxially arranged tires; a stepping motor connected to the rotation column and used for driving the rotation column to drive; a fixed column arranged parallel to the rotation column; a plurality of lasers corresponding to the tires, wherein the lasers are fixed on the fixed column and are used for irradiating the tires; a plurality of CCD cameras corresponding to the lasers, wherein the CCD cameras are fixed on the fixed column and are used for collecting reflection images when the lasers irradiate the tires; a plurality of valves corresponding to the tires,wherein the valves are used for controlling the gas pressures of the tires; and a controller connected to the stepping motor and the valves and used for controlling the rotation of the stepping motorand the gas pressures of the tires. According to the present invention, with the system, the defects of the carrier based plane tires can be simultaneously detected, and the system is precise and efficient.

The invention relates to the technical field of medical tracheal intubation catheters, and discloses a modular tracheal intubation catheter of a breathing machine. The modular tracheal intubation catheter comprises a tracheal intubation catheter, a subglottic flushing tube, a catheter air pipe, a controller, a pressure sensor and a pressure monitor, wherein a catheter air bag is arranged at one end of the tracheal intubation catheter, and a breathing machine connector is arranged at the other end of the tracheal intubation catheter; one end of the catheter air pipe is connected with the catheter air bag, and the other end of the catheter air pipe is connected with the pressure monitor and a first electromagnetic valve; an air inflation device is connected with the first electromagnetic valve; the pressure sensor is arranged in the catheter air bag and is in communication connection with the pressure monitor; one end of the subglottic flushing tube is connected with the tracheal intubation catheter, and the other end of the subglottic flushing tube is connected with a negative-pressure suction device through a second electromagnetic valve; the controller is in communication connection with the first electromagnetic valve, the second electromagnetic valve and the pressure monitor separately. Through the setting of the controller, the modular tracheal intubation catheter has the functions of automatically managing the air bag and conducting flushing, effectiveness during mechanical ventilation of a patient after insertion of the tracheal intubation catheter can be guaranteed,and meanwhile, the occurrence rate of VAP is reduced.

The invention relates to stable environmental protection equipment. The environmental protection equipment comprises a main body, an air outlet pipe, an air pump and at least three air inlet pipes, wherein the main body is cylindrical and is vertically arranged; the air outlet is formed in the top of the main body; the air outlet pipe and the main body are coaxially arranged; the air outlet pipe penetrates through the air outlet hole; and the air outlet pipe and the inner wall of the air outlet hole are hermetically and fixedly connected. The air pump is fixed at the top in the main body; theair outlet pipe is mounted on the air outlet pipe; at least three air inlet holes are formed in the main body and are circumferentially and uniformly distributed by taking the axis of the main body asthe center; a filtering mechanism and at least three supporting mechanisms are arranged in the main body, and the supporting mechanisms correspond to the air inlet pipes one by one. The function of filtering impurities in air is achieved through the filtering mechanism, and in addition, the stability of the equipment is improved through the supporting mechanisms.

The invention provides a suspension type cable deicing device, which belongs to the technical field of cables. The problems that deicing of an existing cable depends on manpower, trouble and labor arewasted, and certain danger exists in winter operation are solved. The suspension type cable deicing device comprises a shell, a working space is defined in the shell, a power mechanism is installed in the working space, suspension mechanisms are installed on the end faces of the left side and the right side of the shell respectively, and the two suspension mechanisms are distributed in a bilateral symmetry mode relative to the center line of the shell. And the lower end of the shell is provided with two deicing mechanisms for deicing the cable. The suspension type cable deicing device is moreconvenient to use, labor-saving and higher in efficiency.

The invention relates to fermentation equipment, in particular to equipment for fermenting mandarin orange, coarse grain, rice flour and fruit enzyme. The equipment for fermenting mandarin orange, coarse grain, rice flour and fruit enzyme provided by the invention can be used for automatically stirring and controlling the air pressure in a container. The equipment for fermenting mandarin orange, coarse grain, rice flour and fruit enzyme comprises a mounting base, a placing assembly, a stirring assembly and a discharging assembly; the placing assembly is mounted on the mounting base; the stirring assembly is mounted on the placing assembly and is used for stirring in a rotating manner; and the discharging assembly is installed on the placing assembly and conducts discharging in a rotating mode. Raw materials can be placed through the placing assembly for fermentation, the raw materials can be stirred through the stirring assembly, fermented fruit enzymes can be discharged through the discharging assembly, a baffle can be opened for discharging while stirring is stopped through a pulling assembly, and use by people is more convenient.

The invention discloses an air water making device capable of stabilizing pressure and preventing expansion and breakage. The air water making device comprises an air blowing device, an air inlet pipe, a high-temperature liquidation pipe, a purification box, a power source and a condenser; the air blowing device is internally provided with an air blower, the left side of the air blower is provided with an air inlet, the lower side of the air blowing device is provided with a slag tank, the left side of the air inlet pipe is provided with a compressor, the surface of the air inlet pipe is provided with a pressure gage, the air inlet pipe is connected with a splitting pipe through a backflow pipe, the condenser is internally provided with a condenser pipe, the lower side of the condenser pipe is provided with a heat preservation device, the high-temperature liquidation pipe is internally provided with a heating device, the right side of the high-temperature liquidation pipe is provided with a medium-temperature liquidation pipe, the right side of the medium-temperature liquidation pipe is provided with a low-temperature liquidation pipe, the upper side of the purification box is provided with a flow diversion pipe, and the lower side of the purification box is provided with a sterilization box. According to the air water making device, cold air and hot air can be liquified through heat dissipation holes in heating rods, and water making efficiency of liquidation pipe equipment is improved.