38results about How to "Precise air pressure control" patented technology

The invention provides a turn-over pad. The turn-over pad comprises a fixing plate; a supporting air bag which is fixedly arranged on the fixing plate; a pair of supporting plates which are symmetrically and fixedly arranged on the two radial sides of the fixing plate; a pair of turnover plates which are symmetrically arranged on the two sides of the fixing plate in the radial direction and hingedto the corresponding supporting plates; a pair of main air bags which are fixedly arranged on the corresponding turnover plates respectively; a pair of auxiliary air bags which are symmetrically andfixedly arranged on the two sides of the fixing plate in the radial direction and communicates with the main air bags located on the opposite sides of the auxiliary air bags correspondingly; a plurality of exhaust valves which are respectively arranged on the corresponding main air bags and the supporting air bag; a pair of driving mechanisms which are arranged on the corresponding supporting plates respectively, wherein the output ends of the driving mechanisms are fixedly connected with the corresponding turnover plates; and a plurality of inflating devices which are respectively communicated with the supporting air bag and the main air bags and are used for respectively inflating the supporting air bag and the main air bags. The invention provides a control method of the turn-over pad.

The invention relates to an artificial quartz stone pressing system, wherein a plurality of air springs are arranged between a vibration plate and a material bed and around a mold in a traditional pressing system. The air springs are controlled by a control system, the control system comprises a plurality of vibration data acquisition device, a data processing device and a plurality of air spring inflating / deflating control device; a data output end of each vibration data acquisition device is connected with a signal output / input end of the data processing device, a control signal output end of the data processing device is connected with each air spring inflating / deflating control device; each vibration data acquisition device is used for acquiring a vibration parameter of each air spring correspondingly, and each air spring inflating / deflating control device is used for inflating / deflating each corresponding air spring; and the data processing device is used for carrying out frequency spectrum analysis on the vibration parameter acquired by each vibration data acquisition device and outputting an inflating / deflating control signal to each air spring inflating / deflating control device according to a comparison result. Compared with the prior art, the artificial quartz stone pressing system disclosed by the invention has the advantages that a whole machine ensures excellent working conditions, service life is largely prolonged and product quality is largely improved.

The invention relates to a reaction control and mass spectrometry analysis station for the in-situ pool of X-ray characterization equipment. The reaction control and mass spectrometry analysis station includes a reaction gas composition control module and an online gas composition analysis module. The content of the invention also includes There is a modification of the vacuum pipeline part. After the modification, the original vacuum pipeline part is connected to the analysis station through the main exhaust port, the tail gas port of the in-situ reaction tank and the mixed gas inlet of the in-situ reaction tank. The modification is characterized in that the vacuum pipeline The mass spectrometer sampling port, sampling capillary and control valve are partially added. The present invention has the following advantages: the sampling time delay is negligible during mass spectrometry gas sampling component analysis, and the sampling analysis requirements of continuous, real-time and high time resolution of in-situ analysis are achieved; under the working conditions of X-ray characterization equipment, the obtained At the same time as the electronic structure / crystal structure, the precise information of the ambient gas composition is obtained simultaneously, which expands the device function and realizes in-situ multi-dimensional characterization.

The invention discloses a cylindrical battery cap which comprises an installation seat and a cap portion. The cap portion comprises a top cover, a conductive anti-explosion membrane, a conductive padand an insulating ring, the top cover is arranged on the upper portion of the conductive anti-explosion membrane, a circumferential portion of the conductive anti-explosion membrane contacts with a circumferential portion of the top cover in an encircling manner, the top cover is provided with a first vertically-penetrated through hole, the conductive anti-explosion membrane is provided with an anti-explosion line which can be cracked when the pressure in a cylindrical battery is increased, the conductive pad is provided with a second vertically-penetrated through hole and is arranged on the lower portion of the conductive anti-explosion membrane, a non-circumferential portion of the conductive anti-explosion membrane and a non-circumferential portion of the conductive pad are at least locally and fixedly connected together, and the insulating ring is arranged between the circumferential portion of the conductive anti-explosion membrane and the circumferential portion of the conductivepad. The cylindrical battery cap has the advantages that ignition of the battery is prevented, the air pressure in the battery is more accurately controlled, and the sealing performance of the battery cap is good.

The invention relates to the technical field of fluid glue pushing equipment, in particular to an intelligent fine atomizing valve. The feed depth of a motor output push rod of a motor is controlled by a computer control device, the gap width between a needle head of a valve needle and a glue pushing head can be controlled by different feed depths, gas enters a piston cavity through a first channel and pushes a piston to move upwards after entering an electromagnetic valve, the piston drives the valve needle to rise, the valve needle is stopped after touching the motor output push rod, glue liquor of a glue filling nozzle passes a valve needle channel and finally flows out through the gap between the needle head of the valve needle and the glue pushing head, an electrical proportional valve controls inlet gas pressure through the computer control device when the glue pushing head pushes glue, the gas enters an atomizing gap through a second gas inlet channel, glue liquor of the glue pushing head is sprayed out of an atomizing nozzle of an atomizing pipeline in a misty form by gas pressure of the atomizing gap, and the electrical proportional valve is controlled by the computer control device to accurately control the gas pressure, so that the atomizing valve can accurately control atomizing degree.

The invention discloses a vacuum tubular furnace system. The vacuum tubular furnace system comprises a working pipe, a corrugated pipe and a four-way pipe which are sequentially communicated, wherein one end of the working pipe is connected with an air intake pipeline through an air intake end joint, and the other end of the working pipe is connected with the corrugated pipe through an air exhaust end joint; a passage formed by the working pipe, the corrugated pipe and the four-way pipe is divided into two branches by the four-way pipe; the first branch is connected to a vacuum pump through a switch valve and a three-way pipe; and the second branch is connected to the vacuum pump through a buffering filter, a needle valve, an electromagnetic valve and a three-way pipe. The vacuum tubular furnace system further comprises a barometer used for measuring an air pressure in the passage, and a circuit automatic control system. Two air exhaust passages are adopted in the vacuum tubular furnace system disclosed by the invention, so that wide-range adjustment for an air exhaust capacity can be realized, and the air pressure can be accurately controlled in a wide range; in addition, the system realizes automatic control and adjustment for the air pressure by virtue of the electromagnetic valve and the buffering filter; and the vacuum tubular furnace system disclosed by the invention is good in air tightness, accurate in air pressure control, and capable of being used in an atmosphere rich in dust.

The invention provides a salt frost-heaving tester capable of realizing water-heat-stress coupling effect. The tester comprises an assembling body and a loading system; the assembling body comprises asample tube, an upper cooling plate ad a lower cooling plate; the sample tube comprises superposition tubes in threaded connection in order, and a bottom tube arranged below the superposition tubes;multiple tube wall holes are uniformly formed in the circumferences of the superposition tubes; the tube wall holes are connected with end covers; rubber plugs are arranged on the end covers; multiletube wall holes are arranged at the circumference of the bottom tube, drainage nozzles are arranged on the tube wall holes; each of the upper cooling plate and the lower cooling plate comprises a cooling plate upper cover and a cooling plate base connected through bolts; and the loading system is a lever system or a stress sensor system. A coupling effect of water, heat, stress and like elements can be realized, the tube body adopts the sectional arrangement, the sample size can be controlled as required, the structure is delicate, the design is reasonable, and a testing result is accurate.