4results about How to "Precise pressure regulation" patented technology

The utility model discloses a portable fuel gas pressure regulating box which comprises a box body, a gas inlet connecting pipe is arranged on one side in the box body, a gas inlet valve is arranged at the upper end of the gas inlet connecting pipe, a connecting pipe fitting is connected to the gas inlet valve, a first sensor is arranged at the upper end of the connecting pipe fitting, and a pressure regulator is arranged in the center of the connecting pipe fitting. An outlet valve is fixedly connected to the lower end of the second sensor and the connecting pipe fitting, an air outlet connecting pipe is fixedly connected to the lower end of the outlet valve, moving wheels are arranged at the four corners of the bottom of the box body, a handle is arranged at the upper end of the box body, and a lifting pull rod is fixedly connected to the back of the box body; the product has the advantages that the pressure regulating box is provided with the moving wheels, the handle and the lifting pull rod, so that the pressure regulating box is easy to move and store, the design is very suitable for equipment needing to be used in different scenes, such as industrial sites, household gas equipment or outdoor activities, and physical output during carrying is reduced due to the use of the moving wheels.

The utility model discloses a cloth pressing device for an air jet loom, which relates to the technical field of looms and comprises a frame, a guide roller mechanism and a lifting unit are fixedly mounted on the frame, a cloth pressing unit is fixedly mounted on the lifting unit, and a cleaning unit is fixedly mounted on the cloth pressing unit. The cloth pressing unit comprises a pressing plate and an adjusting seat, and the pressing plate and the adjusting seat are fixedly installed on the lifting unit. The cloth pressing device has the beneficial effects that through real-time monitoring of a first pressure sensor and cooperative work of a control valve mechanism and an air bag, accurate adjustment of cloth pressure by a pressing plate is achieved, so that acting force is evenly applied to cloth, the cloth is better tensioned and flattened, and the flatness and quality of the cloth are improved; by means of the composite coatings on the surfaces of the sliding plate, the pressing roller mechanism and the guide roller mechanism and the unique pressure monitoring and adjusting mode of the pressing roller mechanism, friction between the sliding plate, the pressing roller mechanism and the guide roller mechanism and cloth is effectively reduced, cloth abrasion and weft yarn broken ends are reduced, and production efficiency and quality are improved.

The present application belongs to the technical field of hydraulic control, and discloses a large-diameter high-pressure ball valve hydraulic torque feedback adaptive control system; comprising: a multi-modal sensing module: used for collecting the torque of the high-pressure ball valve stem, the position of the valve stem, the oil pollution degree and the oil temperature, and performing corresponding filter replacement warning and temperature warning; an adaptive control module: used for denoising the torque and the position, calculating the torque error and the position error, optimizing the PID parameters of the PID control algorithm, realizing the composite closed-loop control of the torque and the position, and obtaining the control instruction; obtaining the compensated control instruction through dynamic friction compensation; a hydraulic power module: used for adjusting the pump displacement and the overflow valve opening degree according to the compensated control instruction, and outputting the oil to the actuator module; an actuator module: used for receiving the oil to drive the hydraulic motor to operate; the present application guarantees the accuracy and stability of torque control.

The utility model relates to a kind of friction clutch structure for realizing braking by pneumatics, belong to the technical field of friction braking mechanism, including rotating shaft, the rotating shaft is equipped with transmission disc, the transmission disc side is equipped with with rotating shaft movable sleeve joint's brake pressure disc, the transmission disc and brake pressure disc between being equipped with friction plate, the friction plate is equipped with several annular distribution and with transmission disc screw thread type sleeve joint fixed counterbore screw, the transmission disc and rotating shaft between being equipped with spring that drive brake pressure disc is reset.With compact structure, operating stability is good and the characteristics of long service life.Adopt the design of thrust ball bearing, solve the friction wear problem between rotating component and stationary actuator.By air pressure to generate braking force, make transmission disc and friction plate combine, to realize braking;When air pressure disappears, through spring force to make component separate, restore transmission.