170 results about "Pinch valve" patented technology

A disposable kit for a bioprocessing system includes a tray having a spine having a first window and a second window, at least one bioprocessing vessel received within the tray, a pinch valve manifold removably received by the spine within the first window, a first tubing segment removably received by the spine within the second window, and a second tubing segment removably received by the spine within the second window.

The invention relates to an injection system, an injection method and a control method for medical capillary polishing, and the injection system comprises a first liquid storage pipe used for storing magnetorheological fluid; the first three-way connector is connected with the first liquid storage tank through a first pipeline; the first pump is connected with the first three-way joint through a second pipeline; the second pipeline comprises a vertical pipe body which is partially vertically arranged, and the space between the first pump and the vertical pipe body is filled with a gas section; the capillary tube is connected with the first three-way connector through a third pipeline; the first pinch valve is installed on the first pipeline and the third pipeline and used for cutting off the first pipeline or the third pipeline. The particle settling volume in the injection system can be reduced, the machining precision is improved, and the service life of equipment is prolonged.

The present invention discloses a system comprising an actuation valve for receiving a first pressurized fluid, a piston in communication with the actuation valve, and a flow restrictor for controlling the flow of a second pressurized fluid from the piston. The flow restrictor may vent to ambient pressure and the piston may act as a pinch valve on at least one of an irrigation line.

A device that may be a valve or a pinch valve is disclosed. The device includes at least the following components: (1) a flexible sleeve and (2) two end connection ports that are located on opposite ends of the flexible sleeve. The device may also include one or more of the following: an actuator, a body or housing, and a heating element. The flexible sleeve is capable of having the high-temperature material flowed therein and being in direct contact with the flexible sleeve. The high-temperature material is a material at a temperature above 200° C. For example, the high-temperature material may be a molten material in a casting process. A method of using the device is also disclosed. The method involves, at least, the following steps: (1) providing a flexible sleeve, and (2) flowing a high-temperature material into the flexible sleeve. The steps may be part of a casting process involving molten material, such as molten metal or molten metal alloy. The flexible sleeve may be provided as part of a device, such as a valve or pinch valve.

The invention relates to the technical field of deep ploughing and fertilizing, in particular to a deep crop weeding and fertilizing all-in-one machine which comprises a mounting frame and a plurality of fertilizer conveying pipes, a plurality of supporting shells and elastic supporting mechanisms are arranged at the bottom of the mounting frame, plough shares are hinged into the supporting shells, and the top ends of the plough shares are connected with the elastic supporting mechanisms; the output end of the fertilizer conveying pipe is provided with an electromagnetic pinch valve, the electromagnetic pinch valve is fixed on the back of the supporting shell, the electromagnetic pinch valve is provided with a mechanical closed driving part, and the mechanical closed driving part is linked with the plough share; a vibration exciter is installed on the supporting shell, and a flow valve is arranged on the fertilizer conveying pipe. The ploughing function and the fertilizing function are integrated, and the working efficiency is high; in the ploughing operation process, when the plough share makes contact with and collides with hard obstacles such as stones existing in soil, the plough share is stored in the supporting shell to be buffered, and the damage phenomena such as deformation and breakage of the plough share caused by too large instantaneous impact force can be prevented.

A pinch valve includes a housing, first and second pinch bars, an actuator, a first front roller and a first rear roller. The actuator translates the first and second pinch bars relative to one another along a translation axis to pinch a flexible tube extending through an opening of the housing. The first front roller and the first rear roller are spaced from one another in the direction of a longitudinal axis. The first front roller extends transverse the opening and is positioned longitudinally upstream from the first and second pinch bars and the first rear roller extends transverse the opening and is positioned longitudinally downstream from the first and second pinch bars. The housing includes a first wall bordering the opening. A first plane lying tangent to the first front roller and the first rear roller is spaced inward from the first wall of the housing.

The invention discloses a micro reagent total phosphorus analyzer and an analysis method, and belongs to the technical field of water quality monitoring. A liquid metering assembly comprises an injection pump, a liquid storage ring and a multi-channel valve; the digestion colorimetric assembly comprises a digestion tube, a heating element, a temperature sensor, a fan, a light source and a photodiode; the liquid discharge assembly comprises a peristaltic pump; a liquid outlet of the injection pump is connected with a first port of the liquid storage ring through the first electromagnetic pinch valve and the second electromagnetic pinch valve in sequence, a second port of the liquid storage ring is connected with a public port of the multi-channel valve, and a sample inlet of the digestion pipe is connected with a first channel of the multi-channel valve and the peristaltic pump through the first high-pressure two-way valve. The other channels of the multi-channel valve are respectively connected with the water sample to be detected, and a total phosphorus detection reagent and a total phosphorus standard solution which are used for carrying out total phosphorus analysis on the water sample to be detected. The micro-reagent total phosphorus analyzer provided by the invention can eliminate cross contamination of reagents, reduce reagent consumption and waste liquid amount, and improve metering precision and detection stability of micro-reagents.

The application discloses a kind of body cavity effusion pressure self-adaptive control drainage device, it is related to body cavity effusion technical field, including drainage tube, the top of drainage tube is fixedly connected with three-way joint;Liquid storage bag is connected to the export end of drainage tube;Pinch valve is set on drainage tube;Pressure sensor is set on three-way joint;Driving assembly is drivingly connected with pinch valve;Control box is electrically connected with pressure sensor and driving motor respectively, and control box is internally provided with microprocessor;And valve handle is set on pinch valve;By setting pressure sensor, control box, microprocessor and driving assembly, and control box is electrically connected with pressure sensor and driving motor respectively, while setting the setting panel electrically connected with microprocessor, so that medical staff can preset pressure safety range according to patient type, and pressure sensor monitors body cavity pressure in real time and feeds back to microprocessor.

The invention relates to a clamp valve (2) comprising a main body (10) having a receiving space (12) for a tube section, wherein the main body has a lateral opening (14) leading into the receiving space; further comprising a counter-bearing portion (30) for a compressor (40) movable along an actuation axis (S); and further comprising a closure element (20) movably fastened to the main body and movable relative to the main body between a first position, in which the closure element at least partially closes the lateral opening of the main body, and a second position, in which the closure element exposes an insertion opening (22) for the tube section.

The utility model provides a pipe clamping device which comprises the components of a support which is provided with a clamping groove, the width of the clamping groove from a groove opening to a groove bottom is gradually reduced, and the clamping groove is used for placing a pipeline; and the pressing rod assembly is movably installed on the support, a pressing block is arranged on the pressing rod assembly, and the pressing rod assembly can be adjusted and fixed to the position where the pressing block tightly presses the pipeline in the clamping groove in the vertical direction. Axial and radial displacement of the pipeline is restrained through vertical pressure of the pressing block. And by adjusting the size of the clamping groove, the device can be suitable for pipelines with different pipe diameters. Meanwhile, the pipeline clamp is made of common light metal plates, and compared with an original cast iron pipeline clamp, the pipeline clamp is easier to maintain, lower in weight, capable of being disassembled and assembled manually and flexible to use.

A peristaltic pump, and related system method are provided. The peristaltic pump includes a cam shaft, first and second pinch-valve cams, first and second pinch-valve cam followers, a plunger cam, a plunger-cam follower, a tube receiver, and a spring-biased plunger. The first and second pinch-valve cams are coupled to the cam shaft. The first and second pinch-valve cam followers each engage the first and second pinch-valve cams, respectively. The plunger cam is coupled to the cam shaft. The plunger-cam follower engages the plunger cam. The tube receiver is configured to receive a tube. The spring-biased plunger is coupled to the plunger-cam follower such that the expansion of the plunger cam along a radial angle intersecting the plunger-cam follower as the cam shaft rotates pushes the plunger cam follower towards the plunger and thereby disengages the spring-biased plunger from the tube. A spring coupled to the spring-biased plunger biases the spring-biased plunger to apply the crushing force to the tube.

The utility model discloses a pinch valve with an adjustable clamping gap, which comprises a valve body, an infrared sensor and a clamping part, the upper end of the valve body is provided with a containing groove for containing a hose, the inner wall of the containing groove is provided with a containing cavity, the containing cavity is internally provided with the infrared sensor for detecting the outer diameter of the hose in the containing groove, and the infrared sensor is connected with the clamping part. The transmitting end and the receiving end of the infrared sensor are oppositely arranged on the outer wall of the hose, the clamping part is located in the valve body, and one end of the clamping part penetrates through the valve body and then is located in the containing groove. According to the pipe clamping valve capable of adjusting the clamping gap, the infrared sensor used for detecting the outer diameter of the hose in the containing groove is arranged in the valve body, the thickness of a pipeline can be automatically detected, and therefore the reserved gap after the hose is clamped can be adjusted according to the size of the hose, and reliable clamping and softness are achieved, and the hose is not damaged.

Powder jet device for cleaning tooth surfaces by applying a powder-gas mixture, comprising a stationary unit (20) with a connection area for a mixing chamber (32) for producing the powder-gas mixture, a handpiece (100) with a nozzle device (102) for blasting the powder-gas mixture onto a tooth surface and a connecting unit (40) for connecting the handpiece (100) to the stationary unit (20), wherein the connecting unit (40) has at least one connecting guide (42) between the stationary unit (20) and the handpiece (100), and wherein a hose section (92) which can be shut off by elastic deformation is arranged in a powder-gas line (44) between the mixing chamber (32) and the nozzle device (102), characterized by that the connecting unit (40) is detachably connected to the stationary unit (20) and that the lockable hose section (92) is arranged in the detachable connection unit (40), wherein the connecting unit (40) has a housing (52) connected to the connecting guide (42), in which the lockable hose section (92) and a pinch element (94) are arranged as a pinch valve and that the connecting unit (40) has a first coupling area (64) for coupling to a corresponding second coupling area (34) of the stationary unit (20).

The invention discloses a time pressure filling method which comprises the following steps: setting a target weight G1 which is 75%-85% of a target filling weight; setting a target weight G2; a first pinch valve opening degree and a second pinch valve opening degree are set, and the second pinch valve opening degree is smaller than the first pinch valve opening degree; the container is located at a filling weighing station, and the filling steps comprise the steps that S1, the pinch valve is opened to a first opening degree and is kept until the detected weight of the filling device reaches G1; s2, opening the pinch valve to a second opening degree, keeping the second opening degree until the detected weight of the filling device reaches G2, and closing the pinch valve; and S3, waiting for a set time length, and ending filling. According to the time pressure filling method, the process of filling while weighing and the low-pressure filling mode are integrated, the functions of filling without bottles and supplementing liquid are achieved through filling while weighing, and the filling precision and the liquid medicine utilization rate of the emptying, calibration, production and tail liquid stages are improved through the low-pressure filling mode.

The utility model relates to the technical field of pinch valves, in particular to a novel normally-open pinch valve which comprises a sleeve, a coil framework is arranged inside the sleeve, moving iron is arranged at the bottom inside the coil framework in a vertically movable mode, and a spring guide rod is placed above the moving iron. Stop iron is fixedly installed at the top end of the interior of the sleeve, and a magnetic conductive ring is arranged at the bottom of the stop iron. A valve body is placed on the surface of the stop iron, a valve hole is transversely formed in the valve body, and a silicone tube with the two ends penetrating through is placed in the valve hole. In a standing state, the silicone tube is completely free of clamping force and can easily penetrate through the valve; the silicone tube is not arranged in a side groove of the valve body from the side surface, so that the silicone tube is prevented from shifting along the side groove; a buffer structure is arranged, so that the impact force borne by the sealing element is reduced, and the service life can reach more than 5 million times; and moreover, as the electromagnetic force of the small air gap is reduced, the residual magnetic force of the product is effectively reduced, and the response speed of the product is accelerated.

The invention discloses a novel ascites drainage system which comprises a negative pressure structure, a dilution assembly, a cutting assembly and a pressing structure, and the negative pressure structure is placed in a mounting frame of the pressing structure; a pressure valve is arranged on the negative pressure structure, the upper part and the lower part of the negative pressure structure are respectively communicated with a liquid inlet pipe and a liquid outlet pipe, and a detachable pinch valve is arranged on the liquid outlet pipe; the dilution assembly communicates with the liquid inlet pipe, and a one-way valve is arranged at the communicating position; the cutting assembly is arranged in the negative pressure structure and comprises a net plate arranged in the middle of the negative pressure structure, pressing rotating structures arranged at the upper end and the lower end of the net plate and cutting tool bits arranged at the rotating ends of the pressing rotating structures, and when the negative pressure structure is pressed to contract, the pressing rotating structures are driven to rotate; therefore, the cutting tool bit is driven to cut the surface of the screen plate. According to the application, the problems that clots in high-viscosity ascites drainage are not thoroughly decomposed and a pipeline is easily blocked are solved in a mode of cooperation of dilution and cutting shear.

The invention discloses a double-spring self-locking normally-closed pneumatic pinch valve, which belongs to the field of pneumatic pinch valves, and comprises a valve body, a cover plate, a screw, a rubber neck bush, a spring sheath, an air cylinder piston connecting rod, a movable plate base, an air cylinder, an air tap, a spring, a lower pressing rod connecting rod, an upper pressing rod guide sleeve, an upper pressing rod, a lower pressing rod and a fixing frame. By designing the double-spring structure, the two ends of the pressing rod are evenly stressed, and pressure is evenly applied. Springs are designed to be dispersed on the two sides of the air cylinder, the overall size of the valve body is not increased, and standard performance is improved. The designed rectangular (cross-section) spring is longer in service life than a round (cross-section) spring, and is more durable. The clamping device is installed in a floating mode, centering bidirectional symmetrical extrusion of the neck bush is guaranteed, rubber stress is symmetrically distributed, and the service life is prolonged to the maximum extent.

The invention relates to a pump head module (2) for a dense phase powder pump (1), wherein the pump head module (2) has at least one powder conveying chamber (40) which is or can be fluidically connected to a first powder reservoir via a powder inlet (3) and to a second powder reservoir or to a powder spraying device via a powder outlet (4). According to the invention, the pump head module (2) is of modular construction and has the following individually replaceable or exchangeable components: a powder inlet module block (20); a first pinch valve module block (21) which is detachably connected to the powder inlet module block (20); a first filter module block (22) which is detachably connected to the first pinch valve module block (21); a second pinch valve module block (21) which is detachably connected to the first filter module block (22); a second filter module block (22) which is detachably connected to the second pinch valve module block (21); and a powder outlet module block (23) which is detachably connected to the second filter module block (22).

The utility model provides a multi-enzyme enzyme organic fertilizer packaging device which comprises a storage tank, a pinch valve fixedly arranged at a discharge port at the bottom of the storage tank, a fixing frame fixedly arranged below the pinch valve, a plurality of supporting arms fixedly arranged on the periphery of the fixing frame, a middle conical hopper arranged on the supporting arms, and a weighing sensor abutting against the outer side of the middle conical hopper. A gate valve is fixedly arranged at a discharge hole in the bottom of the middle conical hopper; and an anti-blocking mechanism is arranged above the discharge hole in the bottom of the storage tank and is used for preventing the discharge hole from being blocked. And through high-precision weight control, efficient automatic operation and anti-blocking design, the organic fertilizer packaging quality and efficiency are remarkably improved, and wide application prospects and market value are achieved.

This utility model relates to the field of clamp valve technology and discloses a dual-channel clamp valve, including a valve body mechanism. The valve body mechanism includes a drive unit, a valve head, and a clamping component that is driven by the drive unit to squeeze the clamping slot of the valve head. It also includes an installation mechanism, which includes a screw seat connected to the tail of the drive unit and a bracket seat with a screw hole screwed onto the screw seat. The bracket seat has several mounting holes for bolts to pass through. The valve head has two clamping slots symmetrical along the clamping component for inserting different hoses. The screw seat is placed at the tail of the drive unit and can be screwed onto the screw seat. This allows the device to be fixed by either the screw seat or the bracket seat. Compared with the prior art, the device has more diverse fixing methods, stronger applicability, and simple replacement operation, making it convenient for operators to use.

1. Name of the product in this design: Three-way pinch valve (micro-residue). 2. Application of this design: This design is intended for the rapid on / off control of fluid flow in pipelines. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

A waste disposal system for agricultural slurry includes a sump, a check valve assembly, and a settling volume. The sump receives an agricultural slurry that is pumped through a check valve assembly to a settling volume. The check valve assembly may include a pinch valve. Optionally, a storage volume that is vented to the atmosphere may be used to further prevent flow from the settling volume to the sump. The settling volume is provided with a discharging device, and the discharging device can discharge redundant water in the slurry to the environment.

A pinch valve 1 comprises a tube body 3 made of an elastic material having a flow path formed inside, a pressing part 4, a rod member 6 attached to a front end of the pressing part 4, and a coupling part 35 provided on the outer surface of the tube body 3 and coupling the rod member 6 to the tube body 3 in a transverse arrangement with respect to the tube body 3, wherein pressing or releasing the tube body 3 by the pressing part 4 through the rod member 6 makes the tube body 3 deform and opens or closes the flow path.

A pinch valve for flowable media, comprising a valve housing (2) in which extends a tubular valve member (4) having a flexible peripheral wall (8) and a valve channel (5) extending in its longitudinal direction, a plurality of pinch elements (23, 24) being arranged around the radial outer circumference (22) of said valve member, said pinch elements being movable toward and away from one another while executing linear working movements (28) in a working plane (25) perpendicular to the longitudinal axis (9) of the valve member (4) in order to squeeze the valve member (4) together to a greater or lesser extent, and comprising a drive device (36) for inducing the working movements (28) of the pinch elements (23, 24), said drive device comprising a drive shaft (42) which is rotatably mounted about a rotational axis (43) extending in the longitudinal direction of the drive shaft and which has an actuating section (48),into which a drive torque causing a rotary drive movement (55) of the drive shaft (42) can be introduced, wherein the drive device (36) further comprises a conversion mechanism (37) having a toothed gear (38) which converts the rotary drive movement (55) of the drive shaft (42) into the linear working movements (28) of the squeezing elements (23, 24), wherein the pinch valve (1) is designed to be manually actuated, wherein a handle (56) accessible outside the valve housing (2) is arranged on the actuating section (48) of the drive shaft (42) which is rotatably mounted on the valve housing (2), characterized in that the toothed gear (38) has an input toothing (67) which is connected in a rotationally fixed manner to the drive shaft (42) and participates in its rotary drive movement (55), as well as an input toothing (67) which is in toothed engagement with the input toothing (67) and which is connected to the squeezing elements (23,24) has a movement-coupled output toothing (68) for causing the working movements (28).

The utility model relates to the technical field of biological fermentation equipment, in particular to an automatic sampling device of a fermentation tank, which comprises a sampling pipe, an electric diaphragm valve, a peristaltic pump, a connecting pipe, a controller, an air inlet component and a plurality of groups of sampling components, the electric diaphragm valve is arranged on the sampling pipe, the air inlet assembly and the sampling assemblies are connected with the connecting pipe, the controller is connected with the electric diaphragm valve, the peristaltic pump, the air inlet assembly and the sampling assemblies, the air inlet assembly comprises an air inlet pipe and an air pinch valve, the air inlet pipe is communicated with the connecting pipe, and the air pinch valve is arranged on the air inlet pipe. In this way, the technical problems that manual sampling is adopted in the sampling mode in the prior art, the fermentation process needs to be frequently interrupted, and the contamination risk is increased are solved.

The invention belongs to the field of urban pipe network water supply, and relates to a non-contact metering valve control system which comprises a main pipeline, the main pipeline is connected with a plurality of water supply pipes, pipe holding metering devices are installed at the positions, close to the main pipeline, of the water supply pipes, and intelligent pipe clamping valves are installed on the sides, away from the main pipeline, of the pipe holding metering devices on the water supply pipes. The pipe holding metering device is composed of the pipe holding clamp and the ultrasonic water meter, the ultrasonic water meter does not make direct contact with water flow, and therefore corrosion and scaling are avoided. The intelligent pinch valve clamps / loosens the hose through which water flows through through air pressure or a pressing rod, water supply is recovered / cut off, and metal parts such as the pressing rod are not in contact with the water flow, so that corrosion and scaling are avoided. Therefore, the pipe holding metering device and the intelligent pipe clamping valve are longer in service life and cannot be damaged due to corrosion and scaling. And no iron casting is in contact with water flow, so that pollution to water is reduced.

This invention discloses a microbial detection device for deep-processed chestnut products, belonging to the technical field of microbial detection devices for deep-processed products. It includes a frame, a crushing mechanism at the top of the frame, a mixing mechanism below the crushing mechanism, a three-way valve below the mixing mechanism, an overflow pipe and a clamp valve at the other two ports of the three-way valve, a sampling needle below the clamp valve, and a double-layer rotating sampling mechanism below the sampling needle, with a sample tube mounted on the double-layer rotating sampling mechanism. This invention utilizes tangential jetting at the throat of the Venturi tube to create a high-speed vortex, ensuring that starch particles remain suspended and guaranteeing sample representativeness. The integrated crushing and filtration, continuous homogenization, and the three-way overflow clamp valve work together to achieve precise matching of continuous flow and intermittent sampling for dispensing. The inner rotating drum is self-cleaning, the Venturi tube has no moving parts, and the clamp valve has a flexible hose contact design, combined with circulating cleaning, reducing cleaning difficulty and preventing cross-contamination.

A coffee machine comprises a hydraulic circuit provided with hoses and a distributor comprising one or more pinch valves, a shaft with one or more cams for controlling the switching of the pinch valves and an actuator of said shaft with cams, wherein each pinch valve has at least one movable choke, configured to choke a section of a hose of the hydraulic circuit, and a drive element for driving the movable choke.

This invention discloses an inner liner for a pinch valve with an inflatable sealing ring, belonging to the field of pinch valves. It includes an outer cylinder, an outer support ring, an inner liner, an inner support ring, an upper cover plate, an inner cover plate, a screw and nut assembly, and an inflation / deflation port. The outer cylinder has outer support rings fixedly connected to its upper and lower ends. The inner liner is placed inside the outer cylinder, with its upper and lower ends sandwiched between the outer and inner support rings. An upper cover plate is fixedly connected above the outer support ring, and an inner cover plate is fixedly connected above the inner support ring. Multiple screw and nut assemblies are fixedly connected in a circular arrangement on the outer sides of the upper and lower inner cover plates. An inflation / deflation port is provided on one side of the upper screw and nut assembly. This invention utilizes an annular interlayer to achieve zero-leakage full closure with a lower shut-off air pressure, reducing the rubber expansion and contraction of the inner liner, improving safety, and increasing its service life.