43 results about "Core plug" patented technology

The utility model discloses a quick assembly type plastic roll core plug which comprises a sealing plug body, the outer wall of the sealing plug body is fixedly connected with an outer sealing ring strip, and one end of the sealing plug body is provided with an adjusting mechanism in a positioning mode. According to the rapid assembly type plastic roll core plug, an operator can insert the sealing plug body into the interior needing to be plugged, then the outer sealing protection sleeve is used for wrapping one end of the exterior of a pipeline, and the inner anti-skid gasket is used for enhancing the external sealing performance and the anti-skid effect of the outer sealing protection sleeve; a limiting rotating block is manually rotated, and a control thread and a penetrating adjusting hole are mutually meshed, so that a rotating adjusting rod is controlled to move, the sealing plug main body is pushed to move, the sealing performance of the plug is enhanced, the sealing plug main body can move to the deep position of the interior needing to be sealed, the sealing plug main body is not prone to falling off, and the service life of the plug is prolonged. And the internal sealing performance is also enhanced through the outer sealing ring strip.

A heat pipe includes: an elongate tube defining a longitudinal axis; an annular wick positioned in the elongate tube; a wick plug positioned in the elongate tube and attached to an end of the annular wick, where the wick plug includes an annular body defining an opening; a thermal expansion modification device including: an annular plug attached to an end of the elongate tube; and an elongate stem extending from the annular plug and through the opening in the wick plug, where the elongate stem defines a protrusion extending radially relative to the longitudinal axis toward the elongate tube, and where the wick plug is positioned intermediate the protrusion and the annular plug; and an end cap attached to the annular plug.

This application relates to a fan-shaped three-core plug, belonging to the field of electrical equipment connection, and includes components such as a bottom cover, a mounting component, a first hardware component, a second hardware component, and a third hardware component. The bottom cover cooperates with the mounting component to clamp the first hardware component, and the mounting component cooperates with the top cover to clamp the second hardware component, achieving a stable plug structure. A first mounting groove is provided on the side of the bottom cover away from the mounting component for mounting the third hardware component. The fan-shaped three-core plug of this application has a reasonable design and a stable structure, which can ensure the safety and stability of the electrical connection.

The utility model provides a heatable steel belt adhesive layer stripping tool, and belongs to the technical field of steel belt adhesive layer stripping. Comprising a knife handle, a knife head and a heating core, a first groove used for being matched with the knife head in an inserted mode is formed in one end of the knife handle, the heating core is arranged in the knife handle, a second groove used for being matched with the heating core in an inserted mode is formed in one end of the knife head, and a connecting piece is arranged between the knife handle and the knife head. The heating core can heat the tool bit, and after a worker cuts the polyethylene layer strip by using the heated tool bit, resin can be melted, so that the stripping process is more convenient, and the effect of reducing the labor intensity of the worker is achieved.

The utility model belongs to filter technical field provides a kind of filtering device, including cylinder, filter core plug and the filter core being located in cylinder, and the both ends along the length direction of cylinder respectively have first port and second port, and filter core has inner cavity;The outer diameter of filter core plug is greater than the outer diameter of filter core and less than the inner diameter of cylinder, and one end of filter core plug is tightly pressed on one end in cylinder, and first port is communicated with inner cavity;The outer wall of filter core and the inner wall of cylinder form outer cavity, and outer cavity and inner cavity are communicated, and output channel communicated with outer cavity is provided in filter core plug;Connector is provided on filter core plug, and cylinder is provided with connecting part.The utility model communicates first port with inner cavity, and outer cavity is communicated with output channel, when medium flows reversely, medium can also pass through filter core and is filtered, and sundries in medium is intercepted, and sundries can be avoided to enter into the air-tightness detection equipment of external device.

The fusible core plug structure comprises an insulating shell, the insulating shell comprises a first insulating part and a second insulating part, the side edge of the first insulating part is hinged to the side edge of the second insulating part through a hinge, and a plurality of positioning holes are formed in the side face of the first insulating part. The side surface of the first insulating part is provided with a positioning hole, the side surface of the second insulating part is provided with a positioning column which is correspondingly clamped with the positioning hole, the first insulating part is provided with a first conductor and a second conductor, the first conductor and the second conductor are respectively provided with a plurality of clamping holes, the first insulating part is provided with a clamping column which is correspondingly matched with the clamping holes, and the second insulating part is provided with a fusible core. According to the utility model, a symmetrical structure is designed, and plugging can be carried out regardless of directions; and the fusible core can be automatically fused when the current is too large, so that the fusing function of the circuit is realized, and the circuit and equipment are protected from being damaged. The first insulating part and the second insulating part are connected through the hinge, left-right mutual matching is achieved in the mode that the positioning holes and the positioning columns are matched, and mounting and dismounting are convenient. According to the utility model, the fusible core is fixed by adopting the upper limiting rib, the lower limiting rib, the clamping hook and the limiting column, so that the fusible core is convenient to mount and dismount.

When the socket assembly is assembled, the socket assembly is self-locked for the first time, a terminal is inserted into a guide column for installation, then a socket sealing cover covers the top of a socket shell, at the moment, the socket shell and the socket sealing cover are preliminarily clamped, namely, a positioning column is preliminarily clamped with a guide groove, and a terminal head of the terminal slightly extends out of the outer side of the socket sealing cover; in this way, the terminal head of the terminal can be prevented from being bent due to stress in the transportation process. When the socket assembly and the plug assembly are plugged in each other, the socket assembly is self-locked for the second time, the plug sealing cover is stressed to sink under the action of external force during plugging, and the terminal head of the terminal slightly extends out of the outer side of the socket sealing cover at the beginning, so that the terminal head of the terminal gradually extends out of the through hole in the socket sealing cover in the sinking process; in the extending process, the terminal head of the terminal can be corrected by the through hole, so that the situation that the terminal head of the terminal is not bent at the extending part when the socket assembly is assembled so as to influence opposite insertion is avoided; through two times of self-locking, the situation that the terminal head of the terminal is bent during assembly, bent during transportation and failed plug-in is avoided.

The application relates to a secondary valve seat assembly structure of a gas pressure reducing device. The secondary valve seat assembly structure of the gas pressure reducing device comprises a primary valve shell, a primary valve cavity is arranged in the primary valve shell, a primary valve core is arranged in the primary valve cavity; a secondary valve shell is detachably connected to the primary valve shell, and the primary valve shell and the secondary valve shell jointly form a secondary valve cavity, a secondary valve core is arranged in the secondary valve cavity; the secondary valve seat assembly structure further comprises a valve core plug-in seat which is a separate component, is detachably fixed on the primary valve shell, and can be disassembled from the secondary valve cavity; a through hole is arranged on the valve core plug-in seat, one end of the through hole close to the primary valve core faces the primary valve cavity, and the other end away from the primary valve core is used for guiding and plugging the corresponding end of the secondary valve core; a secondary valve seat is arranged in the through hole, and the secondary valve seat is used for adapting to the secondary valve core to realize opening degree adjustment when the secondary valve core moves in the axial direction. The above scheme can conveniently disassemble and maintain the secondary valve seat.

The utility model belongs to the field of coiled material production equipment, and discloses a waterproof coiled material roll core inserting mechanism and a waterproof coiled material production system.The waterproof coiled material roll core inserting mechanism comprises an inserting station, a positioning assembly and a positioning driving device, the positioning assembly comprises a transmission rod and a pushing rod which is arranged at the end of the transmission rod and can elastically stretch out and draw back in the axial direction of the pushing rod. The positioning driving device is used for driving the transmission rod to move so that the pushing rod can be coaxially connected to the end of the roll core placed at the inserting station in a pressed mode. According to the waterproof roll core inserting mechanism and the waterproof roll production system, positioning operation of roll cores of different lengths can be compatible, accurate inserting of the roll cores of different lengths is achieved, and the roll cores are effectively prevented from being crushed.

A lock core and key assembly includes a core body, a core plug having a core plug insert-receiving aperture, a core plug insert positioned in the core plug insert-receiving insert, and a key. The core plug insert has a taper and the key has a bow and a shank with a taper that aligns with the taper of the core plug insert.

The utility model relates to the technical field of water-saving irrigation, in particular to an anti-loosening dropper roll core plug which comprises a cylindrical roll core and plug bodies installed at the two ends of the roll core, rectangular limiting holes are formed in the peripheral face of the upper end and the peripheral face of the lower end of the roll core, and the plug bodies are detachably installed on the roll core. A limiting edge is horizontally fixed to the edge of the outer side end of the plug, the edge of the inner side end of the plug is connected with a reducing opening, a connecting ring is fixed to the inner wall of the joint of the plug and the reducing opening, and a high-strength support is fixed in the connecting ring. A rectangular mounting hole is formed in the peripheral surface of the plug, a connecting plate is fixed upwards in the center of the bottom end of the rectangular mounting hole, the length and width of the connecting plate are smaller than those of the rectangular mounting hole, the top end of the rectangular mounting hole extends to the limiting edge in the horizontal direction, and a limiting block is fixed outwards at the free end of the connecting plate. The rectangular limiting hole of the roll core is used in cooperation with the plug limiting block, the limiting block needs to be pressed at the same time during disassembly to achieve rapid positioning and stable connection, and the disassembly and assembly efficiency is improved. The high-strength support in the plug provides strong support, deformation of the roll core is reduced, and the service life is prolonged.

The application provides a device for detecting the performance of core plugging material, which comprises a storage mechanism for accommodating the core plugging material, a test mechanism in communication with the storage mechanism, and a pressure sensor arranged on the storage mechanism and used for continuously monitoring the pressure change generated when the core plugging material is transported from the storage mechanism to the test mechanism, wherein the test mechanism comprises a cavity defined by a top plate and a side plate, one end of the cavity is in communication with the storage mechanism, the other end is formed with a core plugging material outlet, and a core is accommodated in the cavity in a circumferential sealing manner. By arranging the storage mechanism and the test mechanism in communication with the storage mechanism, the plugging material stored in the storage mechanism can be transported into the cavity of the test mechanism to contact the core, so that the plugging condition of the core is obtained. In this way, the technical problem of lacking actual formation test in the prior art for selecting the plugging material is solved.

The utility model provides an energy storage single-core plug, which comprises a plug and a rear cover connected with the plug, and the plug can be connected with a socket matched with the plug for use. The plug is provided with a connecting cavity and a locking cavity which are communicated with each other, and the connecting cavity is provided with female hardware used for being connected with the socket; a self-locking assembly used for locking the socket is arranged in the locking cavity. And the self-locking assembly comprises a locking part capable of protruding out of the connecting cavity and a key capable of locking the connecting plug. A mounting opening matched with the self-locking assembly is formed in the side face of the plug, and the self-locking assembly can be embedded into the locking cavity through the mounting opening; a locking hole is formed in the front side of the plug, the key is provided with a buckle matched with the locking hole, and the self-locking assembly can be connected with the plug in a self-locking mode through matching of the buckle and the locking hole. And a self-locking function is realized through the matching of the key and the locking hole. The design effectively prevents the plug and the socket from being accidentally separated under vibration or improper operation, and ensures the stability and safety of system operation.

A roll retaining device for dispensing sheet material from one or more rolls of sheet material is provided. The roll retaining device includes a core plug configured to be placed in a core of a roll of sheet material, an arm having a first end and a second end; a core plug mating device coupled to the first end of the arm. The core plug mating device comprising an annular surface and protrusion extending from the annular surface. A cavity is disposed in the protrusion and includes an annular rib. The protrusion includes an end surface disposed away from the annular surface. The protrusion has an outer wall with a first portion of the outer wall having a first slope that is less than a second slope of a second portion of the outer wall. Dispensers and methods for dispensing sheet material are also disclosed.

The application belongs to the technical field of electro-hydraulic servo valves, and particularly discloses a flat plate sliding knife type hydraulic slide valve structure and an electro-hydraulic servo valve using the same, which comprises a first limiting block, a valve core plug, a flat plate sliding knife, a valve core and a second limiting block, wherein the first limiting block and the second limiting block respectively abut against two end faces of the valve core from two sides, the flat plate sliding knife is inserted above the valve core, the valve core plug is installed in a threaded hole of the end face of the valve core, the flat plate sliding knife slides on the valve core, and the control of the output flow of the slide valve is realized by changing the flow area of the oil inlet hole on the valve core. The servo valve adopts the flat plate sliding knife type structure to replace the traditional valve core valve sleeve structure, can effectively solve the problems of high cooperation size requirement and difficult machining of the slide valve, reduces the machining cost of the slide valve, and has the advantages of small driving force, high dynamic performance and strong anti-pollution ability.

The application belongs to the field of ultra-high vacuum, and particularly relates to a new structure of a composite ion pump, which comprises an ion pump, a flange adapter welding part, an adapter cylinder, a connecting terminal, a lead wire, an insulating ceramic tube, a connecting column and a NEG pump core, the flange adapter welding part comprises a flange, an adapter and a two-core NEG electrode plug, the ion pump adopts an SKY20L pump, the pump port is replaced by the flange adapter welding part, the NEG pump core adopts a SaesD400 pump core, the two-core plug in the flange adapter welding part is pressed together with the lead wire through the connecting terminal, the insulating ceramic tube passes through the two lead wires and plays an insulating role, the connecting column connects the lead wire and the two plugs of the NEG pump core and is fixed through a countersunk screw, and the NEG electrode plug is combined on the ion pump port to integrate the NEG activation and the ion pump pumping functions. The application solves the problem that a small pumping speed ion pump is compact in space and inconvenient to increase pumping ports. The application has a simple structure and is convenient to install, and provides a new structure for optimization of the composite ion pump structure.

The application provides a self-suction carrying device, which comprises a connecting sleeve in the shape of a cap, a fixed plug core hung on the top wall of the connecting sleeve, a connecting seat extending to the inner cavity of the connecting sleeve, a suction disc arranged at the lower end of the connecting seat, a communicating cylinder arranged at the upper end of the connecting seat, the communicating cylinder being fixed and communicated with the suction disc through the connecting seat, the plug core being used for upward communication and downward one-way plugging of the communicating cylinder after vertical movement to the inner cavity of the communicating cylinder, a limiting assembly arranged between the connecting sleeve and the connecting seat, the limiting assembly being used for limiting the vertical distance between the connecting sleeve and the connecting seat to ensure that the plug core plugs or opens the communicating cylinder, and the workpiece is sucked up by using the self-suction function of the suction disc under the atmospheric pressure, without using a vacuum air source and an air path, and the structure is simple.

This utility model relates to the field of three-way valve technology, and more particularly to a three-way bullet valve, comprising a valve body and a valve core. The valve core includes a valve seat, a valve core plug, a valve stem, and a actuator. The valve seat has a first port, a second port, and a third port. The valve core plug is disposed within the valve seat and is used to control the opening or closing of the first port, the second port, and the third port. The valve stem is connected between the valve core plug and the actuator. The actuator drives the valve core plug to move along the valve seat via the valve stem. This utility model uses the actuator to push the valve stem to make linear motion, and the valve stem drives the valve core plug to slide within the valve seat, so that the first port is connected to the second port; the second port is connected to the third port; and the first port, the second port, and the third port are connected. By controlling the position of the valve core plug, it can realize the functions of one inlet and one outlet, one inlet and two outlets, or two inlets and one outlet merging. It also has advantages such as low flow resistance, fast switching, and reliable sealing, and is especially suitable for high-frequency, high-precision fluid control applications.

The invention relates to an automatic emergency switching time testing device which comprises a bottom plate. The PCRA main control board is installed at the upper end of the bottom plate, the main shell is connected to the upper end of the bottom plate through bolts, the timing instrument installation side plate is connected to the left side of the main shell through bolts, the plug installation side plate is connected to the right side of the main shell through bolts, and the microcomputer timing instrument, the LA16 button switch, the GX12-5 core plug, the socket and the ship-shaped switch are installed on the surface of the timing instrument installation side plate. The AC-03 delta-shaped socket, the AC-06 delta-shaped power socket, the AC-04 delta-shaped power socket and the 2P air switch are installed on the surface of the plug installation side plate, and an air switch pressing plate is installed on the surface of the side, close to the main shell, of the plug installation side plate; according to the novel main control board, accurate and synchronous power-off and timing are achieved, manual delay is completely eradicated, one-key starting full-automatic testing is achieved, operation is simplified, the pressing plate fastens the air switch to prevent looseness, reliable on-off is guaranteed, and testing precision and stability are improved.

A heat pipe includes: an elongate tube defining a longitudinal axis; an annular wick positioned in the elongate tube; a wick plug positioned in the elongate tube and attached to an end of the annular wick, where the wick plug includes an annular body defining an opening; a thermal expansion modification device including: an annular plug attached to an end of the elongate tube; and an elongate stem extending from the annular plug and through the opening in the wick plug, where the elongate stem defines a protrusion extending radially relative to the longitudinal axis toward the elongate tube, and where the wick plug is positioned intermediate the protrusion and the annular plug; and an end cap attached to the annular plug.

The utility model discloses a lock cylinder structure of a traffic lock, which comprises a lock cylinder shell, the inner surface of the lock cylinder shell is rotatably connected with a lock cylinder plug, the front surface of the lock cylinder plug is provided with a lock cylinder hole, the front surface of the lock cylinder plug is fixedly connected with a first round box, the outer surface of the first round box is fixedly connected with a fixed seat, and the fixed seat is fixedly connected with the lock cylinder plug. The inner surface of the fixing base is fixedly connected with a fixing column, and the outer surface of the fixing column is rotationally connected with an overturning base. By arranging the first round box, the second round box, the sliding strip, the limiting sliding plate, the cambered surface check block and the spring, corrosion of external environment factors such as dust and moisture to the interior of the lock cylinder can be effectively prevented under the condition that door opening is not hindered, so that the service life of the lock cylinder is prolonged, lock cylinder faults caused by rusting are reduced, and the service life of the lock cylinder is prolonged. By arranging the fixing base, the fixing column, the overturning base, the first threaded hole, the screw and the storage cavity, the first threaded hole can be opened, so that the spring can be replaced conveniently, and the use effect is improved.

The utility model is suitable for the technical field of electric connector, especially relates to a prevent dustproof type multicore plug -in component combination structure of tripping, including plug shell, and the side of plug shell is provided with socket shell, the surface of socket shell is provided with socket needle, the outside of socket shell and plug shell is provided with first dustproof cover and second dustproof cover. The utility model discloses the elastic block and the clamping wave groove on its surface are set up in the both sides of socket shell, and the clamping limiting block that is matched is set up in the inside of second dustproof cover, realizes the stable limiting locking between dustproof cover and plug -in component, effectively prevents the loosing or tripping problem of plug and socket in the use process. First dustproof cover and second dustproof cover adopt detachable connecting structure, cooperate and form closed covering structure, significantly improve the dustproof, protective performance of whole, ensure that the long -term contact reliability of socket needle and terminal wire, reduce the failure rate, prolong the life.

The utility model discloses an integrated fast plug type double-core connector panel module. The panel module comprises an integrated panel, a double-core plug assembly and an MSD fusing protector, a protection end shell with an upper opening is arranged in the middle of the integrated panel, a high-voltage double-core seat shell with an upper opening is arranged at one transverse end of the integrated panel, and two low-voltage switching shells which are symmetrical front and back and are opened up and down are arranged at the other transverse end of the integrated panel; a double-core plug shell of the double-core plug assembly is in direct insertion connection with the high-voltage double-core seat shell, a jack end is connected with an insertion end of the high-voltage double-core seat shell, and the double-core plug shell is fixedly connected with the double-core plug assembly through a secondary locking assembly; the MSD fusing protector is inserted into the protection end shell; and the low-voltage output plug and the low-voltage input plug are respectively inserted into the upper ends of the two low-voltage switching shells. According to the utility model, the quick-insertion fastening assembly is realized, the safety is high, the assembly efficiency is high, the time consumption is low, the assembly is easy in a smaller operation space, and the quick assembly on-off effect is effectively realized.

The application relates to a valve core sealing plug-in structure of a vehicle pressure reducing device. The valve core sealing plug-in structure of the vehicle pressure reducing device comprises a valve cover body, a valve core mounted in a valve core mounting cavity in the valve cover body and guided and assembled; a plug-in section is arranged on the side of the valve core away from the valve cover body, an axial through channel is arranged on the axis of the plug-in section; a cover body connecting seat is provided with a valve core plug-in hole, a plug-in sealing ring groove is arranged on the hole wall of the valve core plug-in hole; a sealing sleeve mounting hole is arranged on the cover body connecting seat, and a sealing sleeve is fixed in the sealing sleeve mounting hole; the valve core sealing plug-in structure further comprises an annular sealing support, the plug-in section of the valve core can pass through the annular sealing support, and the sealing sleeve is pressed on the annular sealing support; at least one of the sealing sleeve or the annular sealing support is provided with an inner ring table, and the inner ring tables jointly enclose the plug-in sealing ring groove. The above scheme can solve the problems of inconvenient installation of the valve core sealing plug-in structure of the vehicle pressure reducing device in the prior art and easy damage of the plug-in section sealing ring.

The invention provides a spring-loaded pressure balance plug valve, and relates to the technical field of plug valves, the spring-loaded pressure balance plug valve comprises a main valve shell, and flange connecting pipes are integrally arranged at the two ends of the main valve shell; a valve body lining is fixedly arranged in the main valve shell, and the valve body lining is of a conical trapezoidal structure with a narrow upper part and a wide lower part; the valve body lining is matched with the inner wall of the main valve shell; a central control shaft matched with the tapered roller bearing is rotationally arranged in the middle of the main valve shell; close fitting and automatic compensation of the core cock and the valve body lining are achieved through the spring loading structure, the threaded push cylinder is matched with the spring below the supporting shaft to adjust the pressure of the core cock on the valve body lining, and the supporting wheel frame and the supporting pulley provide side auxiliary supporting through the spring. The one-way valve can adapt to appearance changes of the core cock caused by machining errors or abrasion, the sealing effect of opening and closing of the valve body is ensured, meanwhile, the one-way valve can balance pressure of an inner cavity of the main valve shell, and normal work of the valve is prevented from being affected by abnormal pressure.

The utility model discloses a constant flow pump capable of providing stable output, which comprises a valve core, a plurality of safety valve adjusting gaskets are arranged on a valve core plug of the valve core, and the valve core and the valve core plug are arranged on a valve body of the constant flow pump. The stability of the output pressure of the constant flow pump can be controlled, the adaptability of the constant flow pump and the whole system is facilitated, and the stability of the whole system is met; meanwhile, the gasket for adjusting the pressure is adjusted to the valve core plug from the interior of the valve core, so that the pressure is more convenient to adjust.

A capacitor core plug assembly system, belonging to the field of capacitor component assembly technology, includes: a positioning mechanism, a dispensing module, and a driving component. The positioning mechanism includes an upper positioning block and a lower positioning block for clamping the core. Two dispensing modules are provided, located outside the upper positioning blocks. Each dispensing module includes a transfer plate with a return spring between it and the upper positioning blocks. The transfer plate has a through hole. The driving component moves vertically and includes a flat bottom plate. A pair of push rods are vertically mounted on the top surface of the bottom plate, positioned below the two transfer plates. Each push rod has an inner inclined surface on its opposite upper end. The distance between the inner side of the push rod and the end face of the clamped core is greater than or equal to half the plug length. When the return spring is in its natural state, the transfer plate is located between the horizontal projection lines of the upper and lower edges of the inner inclined surface. This solution can automatically and synchronously assemble plugs at both ends of the core, resulting in higher assembly efficiency and ensuring consistent plug insertion depth.

The utility model discloses an injection mold for a multi-slot product, which comprises a mold frame, a mold core and a core-pulling mechanism, the mold core and the core-pulling mechanism are arranged in the mold frame, the mold frame comprises an upper module and a lower module, the upper module comprises a top plate, an upper template and an insert, the top plate is arranged close to the upper template, and the insert is arranged close to the lower template. The insert is fixedly connected with the top plate through the insert fixing plate, so that the insert and the top plate move synchronously, and the pre-mold-opening movement is completed; a core block is mounted on the lower mold core in a sliding manner and is driven by a core-pulling mechanism to perform core-pulling displacement; the cross section of the core block is I-shaped, a core insertion block is arranged on one side, far away from the core pulling mechanism, of the core block, and the core insertion block and the lower mold core are inserted and positioned. According to the utility model, the insert is drawn out and separated in advance before the upper template and the lower template are subjected to mold opening movement, so that the holding force of the upper template to the insert is greatly reduced, and the mold sticking phenomenon is effectively avoided by utilizing the structural design of the core block in the core-pulling mechanism, so that a product is effectively subjected to core-pulling molding.

The utility model relates to the technical field of valves, in particular to a two-way valve which comprises a valve body and a valve element, a flow channel is arranged in the valve body, and the valve element is arranged in the flow channel and used for controlling connection or disconnection of the flow channel. The valve element comprises a valve seat, a valve element plug, a valve rod and a driver. The valve seat is provided with a first port and a second port in a penetrating mode. The driver drives the valve rod to drive the valve element plug to move in the valve seat, part of or all channels can be controlled to be opened by controlling the relative distance between the valve element plug and the connecting position of the first port and the second port, flow channel communication and flow adjustment are achieved, and then the flow of fluid in the flow channel is accurately adjusted. And diversified requirements on flow under different working conditions are met.