127 results about "Pinch valve" patented technology

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.

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 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.

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.

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.

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.

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.

A dense-phase powder pump for conveying powder has at least one powder conveying chamber with a gas-permeable filter element that has at least regions thereof accommodated in a casing body and at least one pinch valve that is or can be connected to an end region of the powder conveying chamber. In particular, the dense-phase powder pump has a pinch valve housing formed as the end piece of the powder conveying chamber, which pinch valve housing has a first region facing the powder conveying chamber and an opposing second region, wherein the first region of the pinch valve housing is designed to be connectable to the end region of the powder conveying chamber by means of a plug connection, in particular a sole plug connection, and wherein the second region of the pinch valve housing is designed to exchangeably accommodate the pinch valve.

The pinch valve comprises a shell, an opening is formed in one side of the shell, and a channel is formed in one side of the shell; the at least one compressible pipeline is arranged on the shell, and at least part of the compressible pipeline is arranged in the channel; the driving mechanism is mounted on the shell; the moving part is in transmission connection with the driving mechanism, at least one extrusion element is arranged on the moving part, and the extrusion element and the channel are arranged correspondingly; the driving mechanism is configured to drive the moving part to move and drive the moving part to enter the shell from the opening, so that the extrusion element extrudes the pipeline located in the channel to achieve pipeline on-off control, and the pinch valve can improve the fluid control reliability and efficiency and prevent the pipeline from being damaged due to long-term extrusion.

The utility model relates to the technical field of pneumatic pinch valves, and provides a pinch valve which comprises a main valve body, a rubber tube and a valve body assembly, the rubber tube comprises a rubber tube main body and outer edges arranged at the two ends of the rubber tube main body, the rubber tube main body is elastic, and the inner diameter of the middle of the rubber tube main body is smaller than that of the two ends of the rubber tube main body. A pre-pressing angle is formed at the section, connected with the outer edge, of the rubber tube main body; an inflation cavity is formed by the rubber pipe and the inner side wall of the main valve body, the outer edge is attached to the inner wall of the main valve body, and an air nozzle communicated with the inflation cavity is arranged on the side wall of the main valve body. The valve body assembly comprises a positioning ring and pressing rings, the positioning ring is arranged on the outer side wall of the rubber pipe in a sleeving mode and attached to the inner side of the outer edge, and the pressing rings are installed at the two ends of the main valve body. According to the utility model, the internal structure of the main valve body is simplified, so that the product is more convenient to form and assemble; a pre-pressing angle and a fixing part are specially designed for the elastic rubber pipe, the rubber pipe is ensured to be stable, the service life of the rubber pipe is prolonged, and the closing effect is improved.

The application discloses a vacuum buried integrated pump station system and relates to the technical field of buried pump stations; the application comprises an elastomer cam rotor pump group, a vacuum pump group, a gas supplement pump group and a vacuum tank; the application can integrate sewage treatment equipment and realize pre-embedded pump stations, positively discharge sewage after vacuum sewage treatment, and through the strict control logic of components such as pinch valves and air breaking valves, all the equipment and other functional components are arranged above the vacuum tank to realize the purpose of installing the integrated sewage treatment equipment on the top of the vacuum tank, increase the internal space of the equipment, solve the problems of installation and maintenance of the integrated pump station, complete all assembly and debugging in a factory, only need hoisting, positioning and pipeline connection on site, greatly shorten the installation period, reduce the construction difficulty on site, according to the control logic, increase the design of idle rotation prevention through a water trap, the design of backflow prevention through air suction check valves and air outlet check valves and the like, guarantee long-term stable operation of the equipment and reduce the maintenance cost.

This application provides a pinch valve, including a valve body, a piston, and a clamping structure. The valve body is used to fix a hose extending along a first direction. The piston is located inside the valve body and, under the action of an external force, can reciprocate along a second direction intersecting the first direction. The clamping structure is fixedly connected to the valve body and / or the piston. Under the action of an external force, the piston moves from an initial position to a cut-off position. At the cut-off position, the clamping structure squeezes the hose, cutting off the internal flow channel of the hose. When the internal flow channel of the hose is cut off, the clamping structure and the internal flow channel of the hose are positioned opposite each other. The maximum dimension of the contact portion between the top of the clamping structure and the hose in the third direction is D1, and the diameter of the hose is D2. D1 and D2 satisfy: D1 / D2 < 1. This effectively reduces the force required for hose wall deformation and significantly reduces the total clamping force required to cut off the hose. The pinch valve provided by this application directly solves the problem of high driving pressure in existing pinch valves.

The present application relates to a kind of pinch valves, including hose;First clamping body, is arranged in one side of hose;Second clamping body, relative to first clamping body is arranged in the other side of hose;Motor;Transmission mechanism, respectively with motor, first clamping body, second clamping body transmission connection, under the drive of motor, first clamping body, second clamping body are relatively close and extrude hose, relative separation and release hose;Distance detector, for detecting the relative distance of first clamping body, second clamping body;Signal acquisition circuit, motor electric signal connection, for detecting motor operating parameter.The pinch valve can meet the demand of large flux, can be applied to negative pressure environment, and can effectively judge the existence of foreign matter in hose.The present application relates to the use method of the pinch valve and the cleaning device using the pinch valve.

An automated end-to-end continuous purification system for the manufacture of therapeutic proteins to reduce complexity of manual process operations and minimize physical space requirements, such system comprising a housing containing a control system, a tray and a collection vessel, wherein the system comprises a series of four purification stages, each such stage comprising a product pump and protein product line, a buffer pump and buffer line, a flow kit, two to four pinch valves and a waste line, and all such purification stages are connected by a single protein product line and are operated simultaneously.

The utility model discloses a self-gravity infrared system octane number standard fuel automatic sample matching device, which relates to the technical field of sample matching and comprises a sample matching frame, a supporting plate is arranged on one side of the inner top of the sample matching frame, a plurality of gallon barrels are arranged on the top of the supporting plate, and weight detection components are arranged at the bottoms of the gallon barrels. A plurality of measuring tubes are arranged on the other side of the top of the sample distribution frame, a mixing assembly matched with the measuring tubes is arranged on one side of the inner bottom of the sample distribution frame, and infrared detection devices matched with the mixing assembly are arranged at the two ends of the outer portion of the sample distribution frame. According to the utility model, the weight of materials in the gallon barrel can be monitored in real time, the accuracy of each-time sample preparation is ensured, according to weight data fed back by the weighing sensor, when the materials in the gallon barrel reach a fixed value of blanking, the pinch valve is opened through the controller, the materials are conveyed into the hose, and the materials naturally flow into the hose under the action of self-gravity, so that the sampling accuracy is ensured. And no additional pump or pressurization equipment is needed.

The invention relates to a pinch valve (2), including a pinching member (10), a base member (20) with a support section (22) facing the pinching member (10) and configured for receiving a tube (T), wherein the pinching member (10) is movable relative to the base member (20) along a pinching direction (4) for pinching the tube (T), and the support section (22) and / or the pinching member (10) comprises a recess (26) extending at least along the pinching direction (4) for receiving the tube (T) sectionally.