333 results about "Pneumatic actuator" patented technology

The invention discloses a fault monitoring sealing ball valve, belongs to the technical field of ball valves, and solves the problems that a self-adaptive compensation mechanism of an intelligent valve positioner can cover the degradation process of mechanical wear of a pneumatic sealing ball valve quietly during long-term operation, and finally sudden control instability is caused due to the fact that nonlinear wear exceeds a compensation limit. Comprising a valve body, a pneumatic actuator arranged on the valve body, a valve rod which is in transmission connection with an output shaft of the pneumatic actuator and located in the valve body, a valve ball fixedly connected with the valve rod and a fault prediction circuit. The fault prediction circuit comprises a multi-dimensional physical sensing array module, a high-speed synchronous acquisition and preprocessing module, a core signal processing and fusion analysis module, an artificial intelligence coprocessor module and a predictive maintenance decision and life cycle management module. Multi-dimensional signals are collected in real time, valve health is evaluated after fusion analysis, and early warning and maintenance decisions are output.

The present disclosure relates to systems, devices, and methods for automated fluid transfer. In an embodiment, the present disclosure relates to a system for fluid transfer between a fluid device and a cartridge for cell processing. The system comprises a first portion comprising an instrument head coupled to a gantry, the instrument head comprising a pneumatic actuator, a peristaltic pump, and a gripping feature for receiving the fluid device. The peristaltic pump may be configured to engage compressible fluidic tubing of a fluid pump module of the fluid device to transfer the fluid between the fluid device and the cartridge. The system further comprises a second portion comprising a docking station for receiving the cartridge. In some variations, movement of the pneumatic actuator relative to the fluid pump module causes occlusion of the compressible fluidic tubing of the fluid pump module by the peristaltic pump.

The improved pneumatic actuator comprises a first shell and a second shell which are detachably assembled together, and an inner cavity is formed after the first shell and the second shell are assembled; the air tap is arranged on the first shell and partially extends into the inner cavity; the device further comprises a driving rod, the driving rod extends into the inner cavity from one side of the second shell, the part, located in the inner cavity, of the driving rod is provided with a piston, the side, facing the second shell, of the piston is provided with a spring, and at least one end of the spring is arranged on an adjusting gasket. A diaphragm is arranged on the side, facing the first shell, of the piston, a sealed air cavity is formed between the diaphragm and the first shell, and the inner end of the air nozzle is communicated to the air cavity. According to the improved pneumatic actuator, the main shell is of a two-half type detachable assembly structure, the main shell can be conveniently disassembled to replace and adjust the internal structure, springs with different elastic coefficients can be conveniently replaced, and therefore the improved pneumatic actuator can be better matched with different operation target working conditions of a supercharger.

The invention discloses an air supply method and an air supply system for a pulsating type ventricular assist device. The air supply method comprises the following steps: setting working parameters of the pulsatile ventricular assist device; the stroke range of the piston in the air pump is determined according to the working parameters; obtaining a piston position piecewise function based on the stroke range; the piston is driven to be at the working zero point, the air pump communicates with the pre-inflation equipment through the pre-inflation pipeline, the air pump is inflated through the pre-inflation equipment, and air pump pressure initialization is completed; and the pre-inflation equipment is disconnected, the air pump is communicated with the pneumatic execution part through the air supply pipeline, a piston in the air pump reciprocates according to the determined piston position piecewise function, the pressure in the air pump is periodically changed, and the pneumatic execution part is periodically and intermittently driven to work according to the sequence of inflation, high-pressure keeping, deflation and low-pressure keeping. The problem of air supply of a balloon, an extracorporeal membrane cavity and the like of an existing pulsatile ventricular assist device is solved.

The invention provides a pneumatic driving part and a pneumatic valve, and relates to the technical field of valve control. The pneumatic driving piece comprises a front cover, a rear cover, a cavity and a piston piece; the first end of the cavity is connected with the front cover, the second end of the cavity is connected with the rear cover, the piston piece is arranged in the cavity, and the cavity is divided into a first inner cavity corresponding to the front cover and a second inner cavity corresponding to the rear cover based on a piston head of the piston piece; the piston piece is used for moving based on the pressure difference between the first inner cavity and the second inner cavity; the front cover is provided with a first one-way sealing piece, and the first one-way sealing piece is used for buffering the moving tail end, moving in the first direction, of the piston piece. The rear cover is provided with a second one-way sealing piece, and the second one-way sealing piece is used for buffering the moving tail end, moving in the second direction, of the piston piece. The first direction is the direction from the rear cover to the front cover, and the second direction is the direction from the front cover to the rear cover. And the movement tail ends of the piston piece in different directions can be buffered, and impact caused by inertia is effectively reduced.

A positioner for a pneumatic actuator for actuating a control instrument, such as a control valve, of a process plant, may include an electropneumatic converter, such as a current-pressure converter; a circuit board which carries supply electronics for the electropneumatic converter a casing which comprises at least one electronics compartment in which at least one electronic component of the positioner, in particular the supply electronics, is accommodated, and a converter compartment, in which the electropneumatic converter is accommodated. The electronics compartment and the converter compartment may be spatially separated from one another. The converter compartment may be delimited at least partially by the circuit board.

The invention belongs to the technical field of valves, and discloses a single-action pneumatic actuator control system which comprises a gas supply gas circuit, a pneumatic pilot valve, a first electromagnetic valve, a pilot loop and a delayed discharge loop. And the delayed discharge loop is configured to discharge the air pressure in the control air cavity, and after a preset time, the air pressure is gradually reduced to be below a set value so as to cut off the pneumatic pilot valve. During power failure in a whole platform range, the time-delay discharge loop can enable the whole control system to automatically switch into a pure pneumatic time-delay mode, so that the situation that the BDV immediately enters an open state due to power loss of the first electromagnetic valve is avoided, and the environmental adaptability and long-term operation reliability of the control system under extremely severe environments such as an ocean platform and flammable and explosive environments are remarkably improved; the safety performance is improved.

A vacuum system comprises at least a pneumatic positioning device comprising a mount configured to hold an effecting element and a pneumatic actuator connected to the mount. A control valve is connected to the pneumatic actuator and to a fluid supply. A fluid sensor measures the pressure of the pneumatic actuator. A method includes applying a controlling signal to the control valve to vary the pressure of the pneumatic actuator and move the mount from a starting position to an end position, monitoring the pressure of the pneumatic actuator by the fluid sensor, determining when the mount arrives at the end position, and deriving the controlling parameters based on processing a set of observed parameters, wherein the set of observed parameters comprises at least the controlling signal, the varying pressure, and arrival information of the mount at the end position.

The utility model relates to the technical field of pneumatic control systems, in particular to a single-action pneumatic PST system, which comprises a pneumatic actuating mechanism, a cam valve and an explosion-proof junction box, a valve position transponder is arranged at the front end of the pneumatic actuating mechanism, one end of the cam valve is communicated with a filtering pressure reducing valve, one end of the filtering pressure reducing valve is communicated with a safety valve, and the other end of the filtering pressure reducing valve is communicated with an explosion-proof junction box. And one end of the explosion-proof junction box is connected with a first electromagnetic valve and a second electromagnetic valve respectively. According to the improved single-action pneumatic PST system, the first electromagnetic valve, the hand-operated direction valve and the second electromagnetic valve are adopted, and when the single-action pneumatic PST system is used, flexible control can be conducted when the single-action pneumatic PST system faces complex working conditions and different operation requirements; the explosion-proof junction box and the energy accumulator are adopted, when the single-action pneumatic PST system is used, the electrical safety of the system in a dangerous environment can be guaranteed, meanwhile, the pressure of the system can be kept within a relatively stable range, and the stability of the system during use is improved.

A robot includes a pneumatic actuator unit with a bistable flexible device that improves the force and energy output capability of the robot. The flexible device is selectively configurable for setting the actuator unit in a contracted state or an extended state based on a fluid pressure within the actuator unit. The robot locomotes within a pipe structure by selectively inflating and deflating each respective actuator unit according to a periodic pressure command cycle.

A method of monitoring a device that includes a soft pneumatic actuator and a gas pump, the soft pneumatic actuator configured to actuate, assist and / or resist a movement of a body part. The method includes measuring the pressure of a fluid in the internal chamber of the soft pneumatic actuator. The pressure measurement or measurements is / are used to estimate anyone or any combination of: the volume of the internal chamber; the three-dimensional position, shape, and / or displacement of the soft pneumatic actuator; and the force delivered by the soft pneumatic actuator.

The utility model provides a kind of pneumatic ultralow temperature ball valve and automatic LNG loading sled, it is related to cryogenic valve technical field, including valve main body and pneumatic actuator, the valve main body includes valve body, valve stem, valve cover, ball and drip tray, wherein: the valve cover is connected with the valve body, the ball is arranged in the valve body and can rotate under the drive of the valve stem, the valve stem is arranged in the through channel formed by valve cover and the valve body, one end extends into the valve body and is connected with the ball for controlling medium on-off, the other end is connected with the pneumatic actuator to realize driving;The valve cover is lengthened neck structure and the length of the valve cover is less than 250mm;The drip tray includes three groups, three groups of drip tray are sequentially fixed along the axial direction of the valve cover.The utility model has the beneficial effect of shortening the length of lengthened neck while ensuring the anti-condensation effect, so that the pneumatic ultralow temperature ball valve can adapt to specific working conditions.

A detection mechanism comprises a detection sliding table air cylinder, a detection installation frame, a detection extension assembly, an elastic reset assembly and at least one displacement detection sensor, the detection installation frame is arranged on a sliding table of the detection sliding table air cylinder, and the elastic reset assembly is arranged on the rear portion of the detection installation frame. The detection extension assembly is slidably installed on the detection installation frame in the longitudinal direction and located between the elastic reset assembly and the fixing clamp, and the elastic reset assembly elastically abuts against the rear end of the detection extension assembly. After the miniature pneumatic actuator is fixed through the fixing clamp, the detection sliding table air cylinder drives the detection installation frame to move forwards, the detection extension assembly is always kept to abut against a telescopic rod of the miniature pneumatic actuator under the action of the elastic reset assembly, and the position of the detection extension assembly or the miniature pneumatic actuator does not need to be manually adjusted. Gaps are avoided, errors are reduced, and the detection precision is improved.

The utility model discloses a kind of test equipment for pneumatic control valve or actuator in the field of pneumatic actuator detection, including valve displacement measuring instrument and control cabinet;Control cabinet is delivered to pneumatic control valve or actuator and measures the pressure of compressed air, valve displacement measuring instrument measures the displacement of pneumatic control valve or actuator;The controller of control cabinet transmits pressure and displacement data to PC host computer by Ethernet, and PC host computer generates the detection report of pneumatic control valve or actuator.The utility model can improve the detection quality and efficiency of pneumatic actuator, improve the production efficiency of pneumatic actuator production enterprise, meet the increasing delivery requirement, solve the problem of low efficiency of factory inspection, stroke etc. rely on visual inspection, realize the digitization and intelligentization of production final inspection.

Disclosed is a polishing or brushing head for a machine tool, comprising: - a plurality of shoes, each shoe being intended to receive or receiving an abrasive tool intended to come into contact with the surface of a material to be polished or brushed, each shoe being able to rotate about an axis of rotation between a first position and a second position, different from the first position, and - at least one pneumatic actuator configured to act on each shoe to cause it to oscillate about its axis of rotation between the first position and the second position.

The invention relates to the technical field of flue gas continuous emission monitoring systems, in particular to a gas path isolation and flow optimization system for flue gas CEMS full-process calibration. According to the technical scheme, the gas path isolation and flow optimization system for flue gas CEMS full-process calibration comprises a gas path isolation module, a pretreatment gas path optimization module, a cabinet panel control module, an analyzer replacement module and a phosphoric acid titration quality control module, the gas path isolation module is introduced, the pneumatic stop valve unit is integrated in the probe, automatic blocking of the probe and a flue gas path in the calibration process is achieved, and before full-process calibration is started, a control system sends an instruction to drive a pneumatic actuator, a valve body is rapidly closed, and physical connection between the probe and a flue is cut off; all standard gas flows to an analysis system through the sampling probe rod, so that a standard gas dissipation path is eliminated fundamentally, the quantity of standard gas actually participating in reaction in a calibration gas path reaches a theoretical design value, and the accuracy of core indexes such as indication error and repeatability is remarkably improved.

The invention relates to a system (1) for aligning an annular body (2) relative to a structural body machining surface (3) of a structural body (4) to be machined, comprising: a pneumatic actuator device (8) having at least one actuator (7) with which the annular body (2) is coupled or can be coupled to a movement, and a pressure regulator device (15) which is fluidically connected to the pneumatic actuator device, wherein the pressure regulator device (15) supplies and / or discharges a mass flow of compressed air to and / or from the pneumatic actuator device (8) for controlling the alignment of the annular body (2) relative to the structural body machining surface (3) of the structural body (4). The invention further relates to a method for aligning an annular body (2).

This utility model relates to the field of valve technology, and specifically to a valve plate sealing structure for a reversing valve of a heating furnace. The reversing valve includes a valve body, a valve plate, a partition plate, a valve plate pull rod, and a pneumatic actuator. The lower surface of the valve plate has a valve plate sealing ring groove, and the bottom of the groove has a dovetail groove. The upper surface of the partition plate has a partition plate sealing ring groove. A sealing ring is provided between the valve plate sealing ring groove and the partition plate sealing ring groove. The upper part of the sealing ring is embedded in the valve plate sealing ring groove, and the top of the sealing ring tightly fits with the dovetail groove of the valve plate sealing ring groove and is bonded to it. When the valve plate and the partition plate are pressed together, the bottom of the sealing ring makes sealing contact with the partition plate sealing ring groove. At this time, a pre-reserved gap is provided between the valve plate and the partition plate. This utility model ensures a sealing effect through the cooperation of the sealing ring with the valve plate sealing ring groove and the partition plate sealing ring groove. The sealing ring is easy to replace.

A lift arrangement (100) for loading and unloading a wheelchair into a compartment of a vehicle such as a bus, truck or train is provided. The lift arrangement comprises a bed configured to accommodate a wheelchair, and an actuating system (20) configured to set the bed (30) between a first position and a second position. The actuating system comprises a main unit (10) having a frame (11) configured to be fastened to the floor (2) or to a wall in the vehicle compartment. The actuating system further comprises a telescopic column (25) comprising a first part (21) and a second part (22) being axially slidingly connected to one another. The first part of the telescopic column is connected to the main unit via two or more link arms (23) in a four-bar linkage (24). The second part of the telescopic column is slidingly connected to the bed (30) such that the bed (30) may be slidingly displaced. The four-bar linkage and the telescopic column are connected to and configured to be actuated by at least one respective hydraulic or pneumatic actuator.

The invention discloses an electromagnetic valve group, a pneumatic assembly and fitness equipment, and relates to the technical field of pneumatic equipment. In the electromagnetic valve group, a first on-off valve and a second on-off valve are electromagnetic valves and are fixedly connected to the outer side of the valve plate; the valve plate is provided with an equipment interface, an air inlet and an air outlet, and is provided with an air inlet path, an air outlet path and a middle air path; the air inlet end of the first on-off valve is communicated with the air inlet through an air inlet path, and the air outlet end of the second on-off valve is communicated with the air outlet through an air outlet path; the first end of the middle gas circuit communicates with the equipment connector, and the second end of the middle gas circuit, the gas outlet end of the first on-off valve and the gas inlet end of the second on-off valve are connected. The electromagnetic valve group can control the on-off of a gas circuit through electric control, so that the control precision can be improved; during deflation, the pneumatic actuator and the air source can deflate through the second on-off valve, the deflation air path and the deflation port, and the deflation path is simplified; in the assembling process, all the electromagnetic valves can be assembled on the outer side of the valve plate in a unified mode and are directly communicated through an air path in the valve plate, and assembling is convenient.

The invention relates to a Tripteron-type parallel manipulator configured to provide three purely translational degrees of freedom by means of three orthogonal linear actuators and their respective parallelogram-shaped kinematic chains. The system incorporates an auxiliary active support arranged on the Z-axis, intended to apply an upward vertical force to the moving platform (11) in order to reduce the load borne by the kinematic chain and the main Z-axis actuator. This support can be implemented using electric or pneumatic actuators, elastic elements, or cable-driven mechanisms, allowing for active, passive, or semi-active operating modes.The integration of the auxiliary support increases the manipulator's load capacity, improves its dynamic stability, and reduces the mechanical demands on the vertical actuator, while maintaining the purely translational kinematics and structural characteristics of the original Tripteron unchanged.

The invention discloses an automatic device for removing residual slag crowns in a crystallizer, which comprises a visual inspection device, a three-axis moving sliding table, a pneumatic actuating mechanism, a centering and clamping device, a main body steel frame structure, an electric control device and a mounting base, the visual detection device mounted on the upper side of the mechanism can quickly and effectively determine the position of the residual slag crown, and meanwhile, the pneumatic execution mechanism at the tail end is matched with the three-axis moving platform to effectively and quickly clean the residual slag crown, so that the cleaning efficiency of the slag crown is effectively improved; the inverted-cone-shaped inner cavity with a certain inclination is formed in the placement base at the bottom, falling slag crowns can be conveniently received, collected and cleaned, the problems that residual slag crowns in the crystallizer are difficult to clean and slow to clean are solved, and the automation degree and the production efficiency of equipment are improved.

This invention relates to the field of directional valve technology, and more particularly to a food-grade plate-type pneumatic directional valve, comprising a directional valve housing, a first channel at one end of the directional valve housing, two channels and a third channel at the bottom of the directional valve housing, quick-opening hand holes on both sides of the directional valve housing, a pneumatic actuator mounted on the side wall of the directional valve housing, and a baffle plate inside the directional valve housing connected to the pneumatic actuator via a coupling. This invention utilizes a float plate and microswitches. The float plate drives a slider to move within a groove. When the slider moves to contact either the first or second microswitch, a corresponding electrical signal is triggered. When liquid leakage causes an abnormal rise in the water level of a certain channel, the float plate rises accordingly, triggering the second microswitch, which activates an electric push rod to push the push plate, causing the rubber band to expand. The rubber band then opens the rubber sealing gasket, enhancing the sealing effect and reducing the possibility of leakage expansion.

The utility model discloses a pneumatic valve control device based on an air storage tank and an air source amplifier, and relates to the field of pneumatic valve control devices. A traditional pneumatic valve lacks an effective emergency gas supply guarantee mechanism, the valve cannot be closed rapidly, personnel safety and the production environment are greatly threatened, large resistance exists in the gas transmission and control process, and valve opening and closing response is slow. The pneumatic valve comprises an air filtering pressure reducing valve, an electric valve positioner, a first air source amplifier, a second air source amplifier, a pneumatic actuator, a limit switch, an air storage tank, an electromagnetic valve, a first pneumatic valve, a second pneumatic valve and a valve body. According to the device, the air inflow can be adjusted according to system requirements, stability and accuracy of valve action are guaranteed, quick response of the valve action is achieved, when a gas cut-off fault occurs, a standby gas source of the gas storage tank is automatically switched, the valve is driven to be quickly and accurately closed, and safety accidents possibly caused by out-of-control of the valve are effectively prevented.

Methods and apparatus for slit valve control are provided. In some embodiments, a slit valve system includes a slit valve body having an opening configured to permit passage of a substrate; a door in the valve body, configured to transition between an open position and a closed position in which the opening is closed; a pneumatic actuator coupled to the door, the pneumatic actuator including a moving member configured to exert a force on the door; and a controller coupled to the pneumatic actuator, the controller configured to control fluid pressure entering the pneumatic actuator based at least on a target actuation time of the door or target vibration of the door.

The utility model belongs to the technical field of butterfly valves, and particularly relates to a wafer type soft sealing pneumatic butterfly valve which comprises a valve body, a pneumatic actuator is fixedly installed in the middle of the top of the valve body, connecting sleeves are fixedly installed on the left side and the right side of the valve body respectively, and air pipes are fixedly installed on the front sides and the rear sides of the left face and the right face of the pneumatic actuator respectively. A controller is fixedly installed on the back face of the pneumatic actuator, a battery box is fixedly installed on the back face of the valve body, and a storage battery is fixedly installed in the battery box. The pneumatic actuator can drive the movable rod to rotate, when the butterfly plate is transversely arranged, the butterfly valve is in a closed state, when the butterfly plate is vertically arranged, the butterfly valve is in an open state, the rotating disc can also drive the movable rod and the butterfly plate to rotate, and the pneumatic actuator provides rapid and accurate automatic control. The manual mode realizes fine operation under debugging, overhauling or special working conditions, and the operation stability of the device can be enhanced through complementation of the two modes.

The intelligent valve positioner comprises a positioner controller, an electrical converter, a pneumatic amplifier and a valve position feedback module, the positioner controller comprises a main controller, a power switching module and a current control module, and the main controller is used for outputting a target current variable and a current control signal according to valve opening deviation; the power switching module is used for determining target voltage according to target current variables, the current control module rapidly outputs target electric signals according to current control signals under excitation of the target voltage, and the electrical converter is connected with the current control module and the pneumatic amplifier and used for converting the target electric signals into target air pressure signals. The pneumatic amplifier is connected with the pneumatic actuator and used for amplifying the target air pressure signal and then transmitting the target air pressure signal to the pneumatic actuator so that the pneumatic actuator can drive the valve opening degree to change according to the amplified target air pressure signal, and the valve position feedback module is connected with the main controller and the pneumatic actuator and used for detecting the current valve opening degree and feeding back the current valve opening degree to the main controller.

The application discloses a valve intelligent sensing and control terminal and an implementation method thereof, and belongs to the field of industrial valve maintenance automation. The device comprises a connecting shaft, a displacement module, a strain module, a control module, a pneumatic amplification module, a communication module, an alarm module and a power module arranged in a box body; the displacement module is used for collecting signals based on the Hall principle to detect the number of rotations of a valve rod and infer the forward and reverse rotation directions of the valve rod; the strain module is used for collecting the electric signal values of strain gauges arranged on the connecting shaft and performing torque calculation; the control module is used for receiving the data signals collected by the displacement module and the strain module, feeding back the gas output size of the pneumatic amplification module, and then adjusting the output torque of the pneumatic actuator. The application realizes automatic monitoring, early warning and dynamic adjustment of the valve state, solves the problems of low efficiency of traditional manual recording and post-fault maintenance, and improves the safety and economy of industrial system operation.

The application discloses a kind of pneumatic diaphragm actuator and pneumatic actuator.The pneumatic diaphragm actuator of the application includes film cover, with cavity inside, be equipped with air inlet and exhaust hole and all with cavity communication;Diaphragm, be in cavity, and set on the film cover between air inlet and exhaust hole, and can reciprocate in cavity under the action of gas pressure;Push rod, one end is connected with diaphragm, the other end is arranged on film cover and extends to the outside of film cover;Anti-rotation mechanism, between diaphragm and film cover, with diaphragm transmission connection, for guiding diaphragm moves according to linear trajectory.The pneumatic diaphragm actuator of the application is equipped with anti-rotation mechanism, in the process that diaphragm drives push rod to move, can avoid the breakage or damage of diaphragm due to the rotation of diaphragm, prolongs the life of diaphragm and pneumatic diaphragm actuator.

The invention relates to the technical field of metal blowing air pipes and discloses a metal blowing air pipe which comprises a metal pipe and supports, the supports are arranged at the upper end and the lower end of the metal pipe, a blowing ring is arranged outside the metal pipe, the left side of the blowing ring communicates with an air inlet, the air inlet end of the air inlet communicates with a control valve, and a control mechanism is arranged at the control end of the control valve. A pneumatic actuator is connected to the top of an inner cavity of the shell, a control shaft is connected to the control end of the pneumatic actuator, the bottom of the control shaft is connected with a valve rod of the control valve, and sensor sets are connected to the two sides of the inner cavity of the shell. According to the metal blowing air pipe, the gathering effect of cooling airflow is guaranteed, the optical fiber cooling efficiency is improved, helium is completely replaced with assistance to further reduce the production cost, the air cooling height does not need to be increased by increasing the height of a tower body like a traditional mode, and high-difficulty technical transformation and high transformation cost are avoided; and the modification requirement in actual production is met.