34results about How to "Achieve truncation" patented technology

The invention provides a microfluidic valve and a microfluidic chip. The microfluidic valve comprises a base, a sleeve, a rotor and micro-columns, wherein the base is provided with micropores; the sleeve is arranged on the base; the rotor is rotatablely sheathed on one end of the sleeve away from the base; the rotor, sleeve and base are matched to form a stirring cavity; the micropores can be communicated with the stirring cavity; and the micro-columns are arranged on the rotor and positioned in the stirring cavity, and can seal the micropores. The microfluidic valve provided by the invention can implement the on-off state of the micropores on the base through the rotation of the rotor, and can also implement stirring and mixing on the liquid in the stirring cavity; and therefore, the microfluidic valve has the functions of flow path on-off and fluid stirring, thereby reducing the number of components installed on the microfluidic chip and further being convenient for assembly.

The invention relates to a silicon wafer processing device. The silicon wafer processing device comprises a base, a rack, a squaring clamping mechanism, a silicon wafer cut-off clamping mechanism anda wire saw cutting machine, wherein the squaring clamping mechanism is used for clamping to-be-squared seed crystal rods, the silicon wafer cut-off clamping mechanism is used for clamping single-crystal silicon rods or polycrystalline silicon blocks to be cut-off, and the wire saw cutting machine is used for squaring the seed crystal rods and cutting off the single-crystal silicon rods or the polycrystalline silicon blocks. The silicon wafer processing device integrates the silicon wafer squaring and cut-off functions, not only can achieve squaring of the seed crystal rods, but also can achieve cutting off or slicing of the single-crystal silicon rods or the polycrystalline silicon blocks, the structure is simple and compact, the production cost and using cost of manufacturers are reduced,and the equipment utilization rate is increased.

The invention relates to an electrostatic protector, an electrostatic protection system using the electrostatic protector and a visual inspection testing method using the electrostatic protection system. The electrostatic protector comprises a first field effect tube and a second field effect tube, wherein the grid of the first field effect tube is connected with the drain of the first field effect tube and the source of the second field effect tube and is used as the input end of the electrostatic protector; and the grid of the second field effect tube is connected with the drain of the second field effect tube and the source of the first field effect tube and is used as the output end of the electrostatic protector. By combining the electrostatic protection and the visual inspection testing, the invention not only can effectively implement the electrostatic protection, but also can be conducted or cut off by controlling the voltage of the electrostatic protector, thereby implementing the visual inspection testing and reducing the technique complexity.

The invention discloses a drain-off device for preventing generation of steam locking favorably. The drain-off device comprises a left valve deck and a right valve deck. A condensate water accommodation chamber is arranged between the left valve deck and the right valve deck; an inlet tube and an outlet tube are arranged on the left valve deck and the right valve deck; a floating ball is arranged in the condensate water accommodation chamber. The drain-off device also comprises an emptier. The emptier comprises a thermal static metal piece, a sealing ball and a steam locking discharging runner; the front end and the back end of the steam locking discharging runner are connected with the condensate water accommodation chamber and the outlet tube respectively; the sealing ball is fixed on the thermal static metal piece, and directly faces the front end of the steam locking discharging runner; the section of the thermal static metal piece is a diamond; the sealing ball is positioned in the apex angle of the diamond. By applying the drain-off device, automatic discharging of non-condensable gas can be realized, and the service life is long.

The invention discloses a production device with drying and polishing functions for processing Bodhi fruit hand strings, and relates to the technical field of jewelry processing. The production devicecomprises a first conveying belt, a surface cleaning mechanism, a disc type drying mechanism, a polishing and slurry coating mechanism and an abrasive paper quick-change mechanism, wherein the surface cleaning mechanism is arranged on one side of the top end of the first conveying belt. According to the production device with the drying and polishing functions for processing the Bodhi fruit handstrings, the polishing and slurry coating mechanism is arranged, so that the defect that existing hand string raw materials are mostly completed by manual auxiliary positioning in the background technology is perfectly overcome; the output stroke of a polishing roller is controlled through the intermittent contact stroke of the output end of a triangular cam and an idle wheel, the transverse stroke and the longitudinal stroke of the polishing and slurry coating mechanism are driven at the same time by using one power source, the transmission of a driving gear to a transmission gear is transmitted through a spline shaft, and the power output direction is changed through a direction changing gear; and a reset spring is arranged, so that rapid elastic reset of the polishing and slurry coatingmechanism is realized, and the applicability is very high.

The invention relates to a pre-locating rotating picking type chives flower picking mechanism. The pre-locating rotating picking type chives flower picking mechanism comprises a chassis, the front endof the chassis is provided with a pre-locating rotating picking mechanism body, and the pre-locating rotating picking mechanism body comprises two parallel installation plates, wherein the positionsof the two installation plates are fixed, a gathering wheel and a picking wheel are rotationally installed between the two installation plates, and the rotating axes of the gathering wheel and the picking wheel are mutually parallel. The gathering wheel comprises a plurality of rod pieces and two mutually parallel rotating discs, the two rotating discs are fixedly connected through a connecting piece, the two ends of each rod piece are fixedly connected with the lateral sides of the outer rings of the two rotating discs respectively, the plane where the two rotating discs are located and the lateral sides, where the rod pieces are located, of the outer rings form a cylindrical structure, and an angle is formed between each rod piece and the generatrix of the cylindrical structure. By meansof the mechanism, automatic operation of the chives flower picking process can be achieved, the damage to the roots and stems of Chinese chives is low, and the picking efficiency is high. The situation that when the Chinese chives are intensively planted, the roots and stems of the Chinese chives block the picking mechanism can be prevented.

The invention relates to the technical field of power equipment and in particular to a multifunctional wire stripper for electrician construction. The multifunctional wire stripper comprises a centralrod, wherein first T-shaped sliding slots are symmetrically disposed on the left side of the central rod; stopping baffles are mounted on the upper end and the lower end of the central rod by bolts;one ends of two third connecting rods are connected with a third moving block through a pin shaft; one ends of two first connecting rods are provided with a first moving block through a pin shaft; ananti-bias bar is fixedly mounted on a side of the first moving block; a pull block is mounted on one end of the fourth connecting rod through a fourth pin shaft; L-shaped rods are fixedly mounted on aside of each second T-shaped slide block; and one end of a second push rod is provided with a socket matching the anti-bias bar. The multifunctional wire stripper is simple and novel in structure, convenient to use and diversified in functions, can reduce the labor intensity of a user, has a good use effect, and can peel the wires of different specifications, and is worthy of popularization and use.

The invention provides a technical scheme of a control valve for controlling an engine oil nozzle and a using and control method of the control valve. The control valve is characterized by comprising a valve body, a controller, a solenoid valve and a mechanical valve; the interior of the valve body is provided with an oil inlet and a control port; according to the scheme, a pressure relief oil path is arranged in the valve body, and the on-off of the pressure relief oil path is controlled by the solenoid valve, so that the functions that oil is not injected when an engine is started from cold and at low temperature, oil is not injected at low temperature and low rotating speed, oil is injected at high temperature and high rotating speed and the like can be realized.

The invention provides an automatic drainage tube squeezing device. The device comprises a drainage tube fixing plate and a squeezing plate fixing box which are detachably connected with each other, adrainage tube is fixedly installed on the surface of the drainage tube fixing plate, the pressing plate fixing box is provided with an insertion groove matched with the drainage tube fixing plate, the inner surface of the insertion groove is provided with an automatic squeezing plate which is used for squeezing the drainage tube and arranged above the drainage tube fixing plate, the two ends of the insertion groove are each provided with an automatic cutting plate used for cutting off the flow of liquid in the drainage tube, the automatic squeezing plate and the automatic cutting plates are driven by a driving mechanism, a controller electrically connected with the driving mechanism is arranged in the squeezing plate fixing box, and the outer surface of the squeezing plate fixing box is provided with a switch electrically connected with the controller. The device reduces the situation that a drainage tube cannot be squeezed in place or in time due to human negligence or error and consequently the condition of a patient is influenced.

A timed cut-off system applied to a drainage tube comprises a positioning mechanism used to position the drainage tube, a cut-off mechanism and a control unit, wherein the cut-off mechanism comprises a slide rail and a main shaft, a round extrusion plate is disposed on the end part of the main shaft, and an arc raised part is disposed on the round extrusion plate; and the positioning mechanism comprises an extending plate and a supporting plate I, an arc raised thin block is disposed on the supporting plate I, a neck I is formed in the arc raised thin block, a fixed stop dog is disposed on the neck I, the other side of the neck I is equipped with a movable clamping block made of an elastic material, the movable clamping block comprises a plate-shaped part and two clamping parts, and slideways clamped on edges of the arc raised thin blocks are formed in the middle parts of the two clamping parts. According to the invention, the drainage tube can be opened and closed at scheduled time; and the system is applicable to drainage tubes with different sizes, so workloads of medical workers are relieved.

The invention belongs to the technical field of power construction tools, and particularly relates to a power cable stripping device. The power cable stripping device comprises a handle, wherein one end of the handle is fixedly connected with a fixed base with a V-shaped notch in the outer side, the inside of the V-shaped notch is fixedly connected with a second V-shaped clamping block, the fixed base is fixedly connected with a knife rest, a blade is installed on the knife rest, and the cutting edge of the blade is located on the end surface of a clamping groove of the second clamping block; a first guide pillar and a second guide pillar which are parallel with each other are arranged on the fixed base. The power cable stripping device further comprises a movable base with a V-shaped notch in the inner side, the inside of the V-shaped notch is fixedly connected with a first V-shaped clamping block, shaft holes are formed in the two ends of the movable base, the first guide pillar and the second guide pillar penetrate through the corresponding shaft holes respectively, an outer threaded part is arranged at the outer end of the first guide pillar, a first locking nut is arranged on the outer threaded part, an outer threaded part is arranged at the outer end of the second guide pillar, and a second locking nut is arranged on the outer threaded part.

The invention discloses a reinforcing steel bar straightening and cutting-off all-in-one machine for building machining. The reinforcing steel bar straightening and cutting-off all-in-one machine comprises a machine frame, the machine frame comprises a straightener mounting frame, rotating shaft through holes are formed in the two ends of the straightener mounting frame in a penetrating mode, and a transmission mounting frame is fixedly arranged at one end of the straightener mounting frame; and a plurality of fixed mounting plates which are circumferentially arranged at equal intervals are fixedly arranged on the two sides of the bottom end of the machine frame, a straightening device is arranged on the machine frame, the straightening device comprises a rotating frame located in the straightener mounting frame, and a plurality of limiting rotating shaft fixing lugs which are linearly arranged at equal intervals are fixedly arranged on the two sides of the rotating frame. The straightening device rotates, limiting rotating shafts located on the two sides extrude and straighten reinforcing steel bars, and through the rotation of an upper rotating wheel and a lower rotating wheel, the reinforcing steel bars are twitched in the straightening device; and through intermittent ascending and descending of a lifting cutter, the reinforcing steel bars penetrating out of circular truncated cone through holes can be intermittently cut off, and the problems in the background art can be solved.

The invention discloses an air supply device based on centrifugal cut-off. The air supply device comprises an air supply pipeline and a centrifugal cut-off device, wherein the centrifugal cut-off device is arranged in the air supply pipeline, and the centrifugal cut-off device is used for cutting off or opening the air supply pipeline; and the centrifugal cut-off device comprises a centrifugal cut-off disc, a return mechanism and a delay trigger mechanism, the centrifugal cut-off disc is transversely arranged in the air supply pipeline, a plurality of first sliding ways distributed in a radial direction are arranged on the centrifugal cut-off disc in the circumferential direction, a centrifugal cut-off plate is arranged in each first sliding way, through hole flow channels are formed in the far ends of the first sliding ways, the return mechanism is arranged at the rotating center of the centrifugal cut-off disc and connected with the centrifugal cut-off plates, and the delay trigger mechanism is arranged on the centrifugal cut-off disc and connected with the return mechanism. The air supply pipeline is cut off and opened, the airflow uniformity is improved, and a vortex ring generation effect is enhanced.

The invention provides an intelligent secondary water supply device based on Internet of things. The intelligent secondary water supply device comprises a water storage tank, a filtering tank, a pressurizing tank and a networking tank, wherein a hydraulic cylinder bottom plate is fixed at the right part of the upper surface of the outer part of the filtering tank; a hydraulic cylinder is fixed on the top surface of the hydraulic cylinder bottom plate; a hydraulic rod is arranged at a power output end at the top of the hydraulic cylinder; the top end of the hydraulic rod is connected with the right end of an action inclined arm through a first spherical hinge; a supporting long rod is fixed in the middle of the upper surface of the outer part of the filtering tank; a sleeve ring is arranged at the top end of the supporting long rod; the inner periphery of the sleeve ring is in contact with the outer periphery of the right part of the action inclined arm; the left end of the action inclined arm is connected with the top end of an action longitudinal arm through a second spherical hinge; the bottom end of the action longitudinal arm stretches into a water taking barrel; and a limiting transverse arm is fixed at the left part of the upper surface of the outer part of the filtering tank. By adopting the technical scheme disclosed by the invention, the technical problems in the prior art that a flexible water taking capability is not realized, intelligent pressurizing of water flow and real-time measurement of flow cannot be realized and the like are effectively solved, and the intelligent secondary water supply device is easy to popularize and apply.

The invention particularly relates to a device for automatically and efficiently cutting off waste steel rails. The device comprises a steel rail placing frame, a fixing frame is arranged on the right side of the steel rail placing frame, a plurality of rows of evenly-distributed frame supporting mechanisms are arranged on the right side of the steel rail placing frame, and two symmetrically-distributed moving mechanisms are arranged on each of the two sides of each frame supporting mechanism; and a plurality of cutting mechanisms used for cutting steel rails and pressing mechanisms are fixedly arranged on the fixing frame, carrier roller mechanisms are evenly distributed between the row of bracket mechanisms on the rightmost side, and pressing and breaking mechanisms are arranged on the front sides of the carrier roller mechanisms. The waste steel rails can be cut off in the mode that cutting is conducted firstly and then extrusion is conducted, transverse movement of the waste steel rails can be achieved through the moving mechanisms, the steel rails can be fixed through the pressing mechanism, and automatic cutting of the steel rails can be achieved through a cutting machine capable of moving up and down; and longitudinal movement of the steel rails can be achieved through the carrier roller mechanisms, and the cut steel rails can be pressed and broken through the pressing and breaking mechanisms.

The invention relates to the technical field of microfluidic chips, particularly to a micro-channel structure, a fluid testing device and a fluid sample injection testing system. The micro-channel structure comprises a matrix material and a flow channel. The matrix material comprises a hard base layer and a flexible base layer attached to the hard base layer, a fluid channel is arranged between the hard base layer and the flexible base layer, the flexible base layer can be extruded to be attached to the hard base layer under the action of external force relative to the direction of the hard base layer; and after the external force is removed, the flexible base layer returns to the initial state. Compared with the prior art, the micro-channel structure has the following advantages: when a test reagent enters the microfluidic chip by means of the fluid channel, the fluid channel can be cut off and conducted by directly extruding or releasing the flexible base layer, so that devices suchas an electromagnetic valve, a conversion valve and the like can be omitted, the volume of an extra flow path is greatly reduced while the system structure is simplified, and the purpose of saving a test reagent is achieved.

The invention discloses a production device for polymer microspheres, which comprises a reaction tower, which is equipped with a first liquid. The reaction tower is straight, and a plurality of liquid spray pipes are arranged at the bottom of the reaction tower. The inlet of the liquid spray pipe It is connected with the liquid supply pipe equipped with the second liquid outside the reaction tower. The outlet of the liquid spray pipe points to the inside of the reaction tower. The liquid spray pipe includes a nozzle; it also includes a nozzle impact mechanism. The nozzle impact mechanism includes a drive mechanism and an impact rod. The drive mechanism is installed On the periphery of the reaction tower, the impact rod passes through the reaction tower and points to the nozzle in a radial direction, and the nozzle impact mechanism is consistent with the number of nozzles. The invention also provides a production method of the polymer microsphere. The invention can avoid the disturbance of the reaction liquid during the production of the polymer microspheres, and produce the polymer microspheres with small particle size and uniform distribution; at the same time, the equipment is simple, continuous production can be realized, and the production efficiency of the polymer microspheres is greatly improved.

The invention discloses a polymer microsphere production device which comprises a reaction tower. A first liquid is filled in the reaction tower, the reaction tower is in a straight cylinder shape, a plurality of liquid spraying pipes are arranged at the bottom of the reaction tower, inlets of the liquid spraying pipes are communicated with a liquid supply pipe filled with a second liquid outside the reaction tower, outlets of the liquid spraying pipes point to the inside of the reaction tower, and the liquid spraying pipes comprise nozzles. A nozzle impact mechanism is also arranged and comprises a driving mechanism and an impact rod, the driving mechanism is mounted on the periphery of the reaction tower, the impact rod penetrates through the reaction tower and points to the nozzles in the radial direction, and the number of the nozzle impact mechanisms is consistent with that of the nozzles. The invention also provides a production method of the polymer microsphere. Disturbance of reaction liquid during production of the polymer microspheres can be avoided, and the polymer microspheres with small particle size and uniform distribution can be prepared; meanwhile, the equipment is simple, continuous production can be realized, and the production efficiency of the polymer microspheres is greatly improved.

The embodiment of the invention provides a decoding and coding security isolation method, system and device based on double containers and a computer readable storage medium. The method comprises thefollowing steps: acquiring a target file from mobile equipment; decoding or analyzing the target file in a first container to obtain a visual target file; recoding the visual target file in a second container according to a preset rule, and taking the recoded file as a new target file; and importing the new target file into a local device, and importing the source file in pairs in an isolated manner. In this way, illegal unknown input import can be prevented, and the safety of file import is improved.

The invention relates to a device for controlling ignition and quenching by a trigger circuit, which comprises a second capacitor and a triode. The device is characterized in that one end of the second capacitor is connected with a fifth line, the other end thereof is connected with a fourth line and synchronously connected to a triggering end of the triode in parallel, a collector electrode of the triode is connected with a first line, and a discharge electrode is connected with a primary level of a transformer. The device for controlling ignition and quenching by the trigger circuit has the functions that a switch is controlled by utilizing a low voltage and meanwhile a positive electrode power supply can be switched off.

The invention discloses a winding auxiliary device for lithium battery production, belonging to the technical field of lithium battery production equipment. The winding auxiliary device comprises a fixed bottom plate, wherein two sides of the upper end of the fixed bottom plate are provided with supporting frames, the upper end of the left supporting frame is provided with a conveying shaft, the middle part of the conveying shaft is provided with a conveying wheel, the middle part of the right supporting frame is provided with a transmission shaft, the middle part of the transmission shaft isprovided with a winding wheel, the middle part of the front end of the winding wheel is provided with a winding shaft, the middle part of the winding shaft is provided with a fixed groove, the middlepart of the fixed bottom plate is sequentially provided with a detection mechanism, a cutting mechanism, a flattening roller group and a flattening block from left to right, the detection mechanism comprises a U-shaped frame, an ultrasonic transmitter is arranged at the upper end inside the U-shaped frame, an ultrasonic receiver is arranged at the upper end inside the U-shaped frame, and the cutting mechanism comprises a cutting cylinder and a cutting block. According to the scheme of the invention, the detection and cutting of pole pieces in the winding and conveying process can be realized through the cooperation of the detection mechanism and the cutting mechanism, so that the winding quality of the pole pieces in the later period can be greatly increased, and the advantages of strong practicability and high reliability can be achieved.

The invention particularly relates to a device for automatically and efficiently cutting waste rails, which includes a rail placement frame, a fixed frame is provided on the right side of the rail placement frame, and multiple rows of evenly arranged support mechanisms are provided on the right side of the rail placement frame. There are two symmetrically distributed moving mechanisms on each side. Multiple cutting mechanisms and pressing mechanisms for cutting rails are fixed on the fixed frame. Idler mechanisms are evenly distributed between the rightmost row of bracket mechanisms. The front side of the roller mechanism is provided with a crushing mechanism; the present invention adopts the form of cutting first and then extruding to realize the cutting of the waste rail, adopts the moving mechanism to realize the lateral movement of the waste rail, and is equipped with a pressing mechanism to realize the rail’s cutting. Fixed, the automatic cutting of the rail can be realized by using the cutting machine that can move up and down, the longitudinal movement of the rail can be realized through the idler mechanism, and the crushing mechanism can be set to realize the compression and crushing of the cut rail.

The invention discloses a multifunctional plug valve which comprises a drive mechanism, a valve rod, a valve cover, a press plate, a valve core and a valve body. A rotary shaft of the drive mechanism drives the valve core to rotate through the valve rod. Two work faces and two sealing faces which are distributed in cross mode are evenly distributed on the periphery of the valve core, the valve core and a hard sealing ring face welded on the edge of an outlet of the inside of the plug valve form a rotary sealing pair. One work face of the valve core is provided with a through hole. An inner circle and an excircle of the other work face of the valve core are respectively provided with a group of mutually staggered straight grooves identical in size, and the inner straight grooves are communicated with the outer straight grooves through internal circular arc cavities. The multifunctional plug valve has functions of the plug valve. Communication and cutting off of the work faces and the outlet are achieved through rotary motion in the valve closing and opening process. The functions of the plug valve can be diversified through a multiple-work-face structure. A first work face can achieve the functions of the common plug valve. A second work face further has the effects of reducing pressure and preventing cavitation. The multifunctional plug valve can meet the demands of the field of petroleum, chemical engineering, water conservancy and the like.

The invention discloses a cable cutting device for construction of a communication base station, which comprises: a fixed base, a side bracket, a wire reel, an outer casing, an inner guide wheel, a cable cutting assembly and an inner tensioning wire assembly; wherein One side of the fixing base is laterally installed with a connecting base plate, a side bracket is vertically erected on the connecting base plate, a reel is vertically rotatable on the side support, and the upper part of the fixing base is An outer casing is also installed on the end face, and a rubber guide sleeve is transversely fixed on the side of the outer casing close to the reel; and the side of the outer casing close to the rubber guide sleeve is up and down inside A wire transmission wheel is symmetrically arranged, an inner guide wheel is rotatably provided on the inner upper side of the outer casing, and a cable cutting assembly is installed in the outer casing below the inner guide wheel; An inner tensioning wire assembly is also arranged in the casing at the cable cutting device.

The invention relates to the field of agricultural product processing, in particular to a sweet sorghum stalk squeezing device which comprises a horizontally-arranged supporting mounting cylinder. Supporting mounting columns are arranged at the four corners of the lower end of the supporting mounting cylinder correspondingly, a material guiding mounting cylinder is horizontally arranged in the middle of the upper end of the supporting mounting cylinder, a flow guiding mounting cylinder is vertically arranged in the middle of the supporting mounting cylinder, the flow guiding mounting cylindervertically penetrates through the supporting mounting cylinder, the feeding mounting cylinders are symmetrically arranged at the two ends of the flow guiding mounting cylinder, and a plurality of telescopic air bags are horizontally arranged in the middles of the feeding mounting cylinders at equal angles, so that sweet sorghum stalks can be stably and continuously guided through a self-adaptive guide structure. According to the device, sweet sorghum stalks are cleaned and cut off, then the obliquely-arranged squeezing structure is matched, the squeezing quality is improved, meanwhile, efficient collection of squeezed liquid is achieved, the squeezing quality and continuity of the device are remarkably improved, and the squeezing efficiency is improved.

The invention relates to a large-caliber reversing valve which comprises a valve body, butterfly plates, valve stems and drive units, wherein the valve body is provided with a fluid medium inlet and two mirror-symmetrical outlets; each outlet of the valve body is provided with one butterfly plate, one valve body bracket, one valve stem and one drive unit in a mirror-symmetrical mode; and each valve stem is fixed on the corresponding butterfly plate. Since the butterfly plate of the reversing valve is an opening-closing part, the fluid resistance is smaller; since the medium-large-caliber butterfly valve has large effective flow area in a completely open state, the opening and closing of the valve are quick and labor-saving; and meanwhile, the valve has favorable fluid control characteristic and strong functions, and can realize the functions of interception, reversing and diversion.

The invention relates to the technical field of plate building block production and processing, in particular to a partition plate for a plate mold and an automatic partition plate adjusting device. A plurality of parallel cross beams are welded to the other face of the baffle, a vertical beam is welded to the center of each cross beam, side plate ejection mechanisms are installed on the cross beams and the vertical beams, a cross supporting beam is arranged on the upper portion of the baffle, a top locking mechanism is arranged on the upper portion of the cross supporting beam, and a bottom plate flatly attached to the bottom of a mold is arranged below the baffle. The side plate ejection mechanism comprises side plates which are ejected outwards in parallel, and the top locking mechanism comprises locking claws exceeding the two ends of the baffle. The mold is divided into an empty groove section and a material injection section by the partition plate, the overall length of a product is adjusted by adjusting the position of the partition plate, the production requirements of plates and building blocks of different sizes are met, the material injection amount is effectively reduced by adjusting the size of the material injection section of the mold, raw materials are saved, and the production efficiency is improved. The purposes of energy conservation and emission reduction are achieved, and economic benefits are improved.

The invention relates to the field of high-pressure system cut-off valves, in particular to a low-speed cut-off valve bank which is characterized in that the low-speed cut-off valve bank comprises a valve body, a valve cavity, a liquid inlet and a liquid outlet are formed in the valve body, the liquid inlet and the liquid outlet are communicated with the valve cavity, and a valve element used for enabling the liquid inlet and the valve cavity to be connected and disconnected is arranged in the valve cavity; the end, away from the liquid inlet, of the valve cavity is closed, a compression spring is fixed between the closed end of the valve cavity and the valve element, a liquid inlet groove is formed in the end, away from the liquid inlet, of the valve element, and a control liquid opening communicated with the liquid inlet groove is formed in the valve body. The low-speed stop valve group further comprises a control oil way used for controlling manual / automatic connection and disconnection of the liquid port and the liquid inlet. The purpose of conveniently cutting off a single high-pressure and large-flow liquid supply pipeline is achieved.