122 results about "Diaphragm seal" patented technology

The invention discloses an aorta covered stent and an aorta covered stent assembly, and belongs to the technical field of medical instruments. The aorta covered stent comprises a main covered stent body and branch covered stents; a mounting opening is formed in the main body covered stent; the branch covered stent comprises an outer port and an inner port, the side, close to the upstream, of the edge of the outer port is connected with the mounting port through a first membrane, and the first membrane is provided with a first outer convex face and a first inner concave face which are oppositely arranged; one side, close to the downstream, of the edge of the inner port is connected with the mounting port through a second membrane, and the second membrane is provided with a second outer convex surface and a second inner concave surface which are oppositely arranged; the first membrane and the second membrane are connected through the third membrane, and the first membrane, the second membrane and the third membrane seal the installation opening. The assembly comprises a connecting covered stent and the aorta covered stent. The aorta covered stent which does not need to cut the healthy blood vessel of a patient, and is wide in application range, high in flexibility and small in compression occupied space can be formed.

The invention provides a diaphragm bubble point pressure testing device and a testing method. The diaphragm bubble point pressure testing device and the testing method are used for solving the technical problems that an existing diaphragm bubble point pressure testing device is complex in structure, at least two persons need to be matched for operation during testing, and air tightness is attenuated due to the fact that a drainage hole is independently formed or the resetting process is long due to the fact that drainage is detached. According to the diaphragm bubble point pressure testing device, an air cavity is arranged to be of a barrel-shaped structure with the bottom being a spherical surface, a liquid cavity is arranged to be of a hollow columnar structure with the upper portion and the lower portion being open, and a diaphragm to be tested is clamped between the air cavity and the liquid cavity in a sealed mode; the position of the air inlet nozzle is specially designed, so that the uniformity of an air pressure field in the air cavity can be ensured, and the residual liquid can be discharged through the air inlet nozzle when the air cavity is inclined by a certain angle by ingeniously combining with the rotating air cavity, so that the arrangement of an independent drainage hole is effectively avoided, and the air tightness of the testing device is ensured; and the whole testing device does not need to be disassembled, and the drainage time is reduced to several seconds from half an hour after the device is reset.

The utility model relates to a miniature diaphragm solenoid valve for an ink-jet printer, which comprises a valve body, the valve body is provided with a valve core and a control part, the valve body is provided with a circulation cavity and an ink outlet channel communicated with the circulation cavity, the circulation cavity is also provided with an ink inlet, and the ink inlet is communicated with an ink inlet channel communicated with the outer wall of the valve body. The valve body is fixedly provided with a diaphragm sealing plug in the circulation cavity, the diaphragm sealing plug is divided into a first cavity and a second cavity by the diaphragm sealing plug, the ink inlet is located in the first cavity, and the valve element is located in the second cavity and matched with the diaphragm sealing plug. The valve element can drive the diaphragm sealing plug to seal the ink inlet under the control of the control component, ink flowing through the circulation cavity is completely isolated from the valve element and the like through the action of the diaphragm sealing plug, and therefore it is not needed to worry about the influence of the dried ink on the components such as the valve element and the like. And the structure is more compact, and the nozzle is more suitable for the ink-jet printer.

The present invention provides an air spring, comprising a shell, a diaphragm fixed within the shell, a bladder, and a lower end cover, arranged in sequence; the ends of the bladder are respectively sealed and buckled onto the outer walls of the shell and the lower end cover; the diaphragm comprises, from top to bottom, a diaphragm upper cover, a diaphragm, and a diaphragm lower cover; the shell is a hollow structure with an opening at the lower end, the diaphragm seals the opening, so that the shell and the diaphragm upper cover together form an upper chamber, and the bladder, the diaphragm lower cover, and the lower end cover together form a lower chamber; the diaphragm upper cover is provided with at least one upper vent hole communicating with the upper chamber, and the diaphragm lower cover is provided with at least one lower vent hole communicating with the lower chamber; the diaphragm is an elastomer, and under the action of the pressure difference formed between the upper and lower chambers, the diaphragm undergoes elastic deformation and moves up and down within the diaphragm. The air spring of the present invention can isolate high-frequency, small-amplitude vibrations, reduce the conduction of chassis noise, enhance the vehicle's sense of suspension, provide support for the vehicle, and control large vibrations of the vehicle body under roll and pitch conditions.

The invention discloses a dual-channel oil-filled pressure core body and a preparation method, and relates to the technical field of pressure core bodies, the dual-channel oil-filled pressure core body comprises a first base assembly, a second base assembly and an integrated circuit board, the first base assembly is provided with a containing cavity and a first groove with opposite openings, and the second base assembly is provided with a second groove; the first groove is communicated with the first oil filling hole to form a first oil filling cavity; the first silicon piezoresistive chip is fixed at the bottom of the first groove, and the first diaphragm seals the opening of the first groove; the second base is provided with a second groove, the second groove is communicated with the second oil filling hole to form a second oil filling cavity, the second silicon piezoresistive chip is fixed at the bottom of the second groove, and the second diaphragm seals an opening of the second groove; the integrated circuit board is in electric signal connection with the first silicon piezoresistive chip and the second silicon piezoresistive chip through the first pin and the second pin. The dual-channel oil-filled pressure core body is simple in structure, high in measurement reliability and capable of meeting the use requirements of different scenes.

The invention relates to a pre-paving immersed tube tunnel foundation trench back-silting detection method and a sampler, and belongs to the technical field of immersed tube tunnel foundation trench back-silting detection.The detection method comprises the following steps that S1, when detection is needed, an RTK receiver is installed on a detection platform, and the detection platform is moved to a detection point through GPS positioning; s2, putting down the sampler for sampling, lifting up a sealing lifting lead of the sampler after sampling is completed, and pulling a sealing diaphragm to block an opening in the bottom of the sampler; s3, upwards extracting the sampler until the sampler leaves the water surface, keeping the sampler in an upright state, and measuring the thickness of each layer of back silt in the sampler; s4, extracting each layer of back-silting sample in the sampler, and carrying out a specific gravity test to obtain the density of a back-silting object; and S5, according to the thickness and density of the back silting object, whether desilting needs to be conducted or not is judged. According to the detection method, opening and closing of the sealing diaphragm are controlled through the sealing lifting lead, diving operation is not needed, and manpower and equipment cost is reduced; and the thickness and the density of the back-silting sample can be accurately obtained.

The application relates to the field of exterior wall plate building materials, and particularly relates to an ultraviolet-resistant exterior wall plate modular splicing structure, which comprises a solid wood bottom plate, the top of the solid wood bottom plate is sleeved with a transparent plate, the inside of the solid wood bottom plate is integrally provided with a mounting groove, and the mounting groove is further provided with a quick-change mechanism and a splicing mechanism; the quick-change mechanism comprises a lining plate, a manual assembly, an extension assembly and a same-direction assembly; the splicing mechanism comprises a plurality of dovetail blocks and a plurality of dovetail grooves; the ultraviolet-resistant exterior wall plate modular splicing structure seals and buckles a UV diaphragm on the surface of a soundproof plate and the lining plate, has excellent ultraviolet resistance, and further adds a sealing ring between the transparent plate and the solid wood bottom plate, so that rainwater and dust cannot enter the UV diaphragm to corrode the UV diaphragm, the waterproof performance of the UV diaphragm is remarkably improved, the service life of the UV diaphragm is prolonged, and the overall ultraviolet resistance time of the exterior wall plate is further prolonged.

A method for manufacturing a sensor including a sensing element and a housing, the housing including an interior space, which is accessible through a housing opening, and the sensing element being situated in the interior space and being designed to detect a property and / or a composition of an ambient medium of the sensor. The method includes filling the interior space with a protective medium through the housing opening, the protective medium being designed to transfer the property and / or the composition of the ambient medium to the sensing element. The method includes fixing a preferably flexible diaphragm at or in the housing opening preferably for sealing the housing opening, the diaphragm including at least one diaphragm opening. The method includes sealing the at least one diaphragm opening.

The invention relates to an emergency operating device for a motor vehicle lock (1) and, in particular, a motor vehicle door lock (1). For this purpose, the device is equipped with a housing (4), at least one actuating lever (5) provided in the housing (4), and a manipulation element (8) for emergency operation. The manipulation element (8) acts indirectly or directly on the actuating lever (5) and, for this purpose, extends through a rotary element (12) mounted in the housing (4). According to the invention, the rotary element (12) is designed as a rolling diaphragm seal (12) made of an elastomeric plastic.

According to the stem cell culture solution pollution-free collection module, the sterile isolation and vacuumizing process of the internal environment of a collection bottle is achieved through a collection assembly, the function that air in the bottle is pumped out firstly and then the stem cell culture solution is injected is achieved through the coaxial inner needle and outer needle design of an infusion assembly, and the stem cell culture solution is collected through a multi-stage self-sealing structure after the needles are pulled out. And the collection bottle is automatically closed and sealed after liquid injection is completed, so that the pollution-free stem cell culture solution collection module which is pollution-free in the whole process and is closed and safe is realized. The device is characterized in that the device comprises a collecting assembly and an infusion assembly, the infusion assembly is inserted into the collecting assembly, the infusion assembly injects a stem cell culture solution into the collecting assembly, and the collecting assembly comprises a collecting bottle, a sealing plug, a disposable sterile unsealing film, a duckbill valve, a check valve and a multi-layer self-resetting diaphragm; and the sealing plug is clamped at the opening end of the collecting bottle.

The utility model provides a self-adhesive ultrasonic coupling diaphragm patch, which comprises a first sponge frame, a second sponge frame, a high-sound-transmission diaphragm and a sticking sheet, a coupling agent is filled in the first sponge frame, an opening at the lower part of the first sponge frame is sealed by the high-sound-transmission diaphragm, and the sticking sheet is arranged at the periphery of the high-sound-transmission diaphragm; a second sponge frame corresponding to the first sponge frame is arranged on the lower portion of the sticking piece, the second sponge frame is filled with a coupling agent, and the sticking piece is used for being fixed to the ultrasonic probe in a sticking mode, so that the ultrasonic probe is wrapped in the first sponge frame, and the ultrasonic probe is in close contact with the coupling agent in the first sponge frame. The ultrasonic coupling agent can be conveniently and rapidly pasted and fixed on the ultrasonic probe, the coupling agent can be well attached to the probe, and the ultrasonic coupling agent pasting device is convenient to detach, suitable for ultrasonic probes of different sizes and convenient to use.

A "diaphragm seal assembly" consists of a diaphragm seal with a center pin and an end cap, and is attached to the end of a pipe such as a conduit. When pressure inside the pipe increases, the center pin protrudes from the end cap, making the increase in pressure visible from the outside.

The application discloses an electrolysis device and a bipolar frame structure. The electrolysis device comprises a first extrusion plate, a second extrusion plate, a diaphragm, a sealing gasket and at least one bipolar frame. The bipolar frame comprises a frame body, the frame body is formed with a chamber cavity of electrolyte, and the chamber cavity is respectively provided with an inlet part and an outlet part. The bipolar frames are arranged in a laminated manner and fixedly connected. The first extrusion plate is attached to the frame body at the first end of the laminated frame body, and the second extrusion plate is attached to the frame body at the second end of the laminated frame body. The first extrusion plate and the second extrusion plate bear opposite forces, so that the at least one bipolar frame is in airtight connection between the bipolar frames. The first side of the bipolar frame is provided with a first electrode plate, and the second side of the bipolar frame is provided with a second electrode plate. The first electrode plate and the second electrode plate are connected with a power supply and provide current for the electrolyte in the chamber cavity. The chamber cavity is further provided with a dispersion plate, and the dispersion plate shunts the electrolyte in the chamber cavity. The application improves the electrolysis efficiency and is beneficial to the escape of electrolysis gas.

The invention provides an electrolysis unit based on water electrolysis hydrogen production and an electrolytic bath, and the electrolysis unit comprises a diaphragm; the diaphragm is combined between the two polar plates in a sealing manner, so that the diaphragm and the two polar plates form two cavities suitable for accommodating electrolyte; the two electrode layers are respectively positioned in the two cavities, so that the electrolyte reacts to separate out hydrogen and oxygen; and the at least one annular protection sheet is made of an elastic material and is arranged between the diaphragm and the polar plate, and the inner ring edge of the protection sheet extends into the cavity and is positioned between the edge of the electrode layer and the diaphragm so as to protect the diaphragm and prolong the service life of the diaphragm.

A low-cost and corrosion-resistant pressure sensitive element comprises an integrally-formed ceramic base body, and the base body comprises a longitudinally-extending pipe body, a pressure sensing diaphragm closed at the longitudinal near end of the pipe body and a circle of stopping part formed by extending from the middle of the pipe body to the radial outer side; and the pressure sensing circuit is arranged on the surface of the longitudinal near end of the pressure sensing diaphragm and comprises at least one piezoresistor. The manufacturing method comprises the following steps: obtaining a green body of the matrix through dry pressing or injection molding, drying the green body, and sintering to obtain an integrally formed ceramic matrix; wherein the base body comprises a longitudinally extending pipe body, a pressure sensing diaphragm sealed at the longitudinal near end of the pipe body, and a circle of stopping part formed by extending from the middle part of the pipe body to the radial outer side; the surface of the longitudinal near end of the pressure sensing diaphragm is coated with conductive slurry, and a conductive circuit is obtained after sintering; the surface of the longitudinal near end of the pressure sensing diaphragm is coated with thick film paste, and a thick film resistor is obtained after sintering, so that the thick film resistor and the conductive circuit form a pressure measuring circuit.

The utility model discloses a water passing valve, which relates to the technical field of valve bodies and comprises a diaphragm, a sealing cover, a sealing ring, an iron core, a spring, a sleeve, a flat plate and a clamping plate. The guide rod and the sealing cover are integrated, a plurality of first ribs are uniformly arranged on the outer circumferential wall of the guide rod, and the first ribs are distributed in the extending direction of the guide rod; wherein the guide rod is pressed on the inner wall of the electromagnetic coil group, the first rib is in interference fit with the inner wall of the electromagnetic coil group, and the guide rod penetrates through the through hole of the flat plate and the through hole of the clamping plate in a sliding manner; the method has the advantages that the material cost is low, and the universality is improved.

A liquid discharge head includes a nozzle plate, a channel plate, piezoelectric elements, and a diaphragm. The nozzle plate has a nozzle array having nozzles from which liquid droplets are dischargeable. The channel plate has pressure chambers respectively communicating with the nozzles. The piezoelectric elements apply pressures to the respective pressure chambers to discharge the liquid droplets. The diaphragm seals one face of the pressure chambers. The diaphragm includes protruding portions to receive pressures from the respective piezoelectric elements and diaphragm portions to vibrate by the pressures applied by the piezoelectric elements via the respective protruding portions. The piezoelectric elements are disposed opposite to the pressure chambers with the diaphragm in between. Widths of the protruding portions in a center portion of the nozzle array in a nozzle array direction are larger than widths of the protruding portions in each ends of the nozzle array in the nozzle array direction.

Provided is a zone control valve and a fire-fighting system. The zone control valve comprises a valve body, a sealing diaphragm, and an electrical explosion driving device. A fluid flow path, comprising an inlet and an outlet, is formed inside the valve body, and the central axis of the inlet and the central axis of the outlet form an included angle; the sealing diaphragm is sealedly arranged in the fluid flow path and divides the fluid flow path into a first flow channel and a second flow channel; the electrical explosion driving device is mounted on the valve body, the output end of the electrical explosion driving device is in connection with a puncture part, and the puncture part is located in the second flow channel and directly faces the sealing diaphragm.

The utility model discloses a diaphragm sealing structure of a valve core, which comprises a valve seat provided with an accommodating cavity, a working port and a flow channel; the working port is located below the containing cavity and communicated with the containing cavity, and the flow channel is communicated with the containing cavity. The valve element is arranged in the containing cavity, and the valve element can move up and down so as to have the position where the working opening can be opened or closed. The elastic diaphragm is located above the containing cavity, the inner end of the elastic diaphragm is connected with the peripheral side of the valve element in a sealed mode, the outer end of the elastic diaphragm is connected with the valve seat in a sealed mode, the elastic diaphragm can elastically deform to move along with the valve element, and the sealing effect is always kept. The utility model relates to the technical field of electromagnetic valves.

The present application relates to a six-chamber RO booster pump, which belongs to the technical field of boosting equipment. The RO booster pump includes a pump casing, a pump head, and a motor part. The pump head includes a vibrating bottom diaphragm connected to the motor part, a vibrating top diaphragm sealed and installed on the top of the vibrating bottom diaphragm, and a one-way valve body installed on the vibrating top diaphragm. A drive chamber is formed between the vibrating bottom diaphragm and the vibrating top diaphragm. The pump casing includes a pump head shell for the pump head to be installed. A drainage chamber connected to a drainage hole is formed between the pump head shell and the vibrating top diaphragm. The pump head shell is provided with a noise reduction drainage structure in the drainage chamber. The noise reduction drainage structure includes multiple groups of concentrically arranged guide rings and a cyclone provided in the inner hole of the guide ring. The present application has the effect of reducing the noise generated by water discharged from the drive chamber and hitting the inner wall of the pump casing.

The application discloses a diaphragm pump, which comprises a pump shell body internally provided with a containing cavity, an electromagnet assembly, an intermediate shell body, a diaphragm, an isolation shell body internally provided with an isolation cavity and a switch valve structure, the electromagnet assembly comprises an electromagnet fixedly arranged in the containing cavity and an oscillating rod, the intermediate shell body is provided with an independent suction cavity, a transfer cavity and a discharge cavity, the suction cavity is provided with a first suction passage communicated with the containing cavity and a second suction passage communicated with the transfer cavity, the discharge cavity is provided with a first discharge passage and a second discharge passage, the first discharge passage is communicated with the transfer cavity, the diaphragm is sealingly arranged in a communicating port of the side wall of the transfer cavity, the diaphragm is connected with the oscillating rod, the switch valve structure is arranged in the intermediate shell body, the isolation cavity is internally provided with an air inlet passage and an air outlet passage, the air inlet passage is communicated with the containing cavity, and the air outlet passage is communicated with the second discharge passage. Through the above structure, the noise generated during the operation of the diaphragm pump can be weakened, and the diaphragm pump can operate more quietly.

The utility model discloses a pressure switch, which comprises a plug and a lower seat, the plug and the lower seat are spliced to form a closed movable cavity, the inner wall of the movable cavity is provided with a first ring groove, the first ring groove is covered with a sealing diaphragm, one side of the sealing diaphragm is provided with a pushing piece, the other side of the sealing diaphragm is provided with a switch assembly, and the inner wall of a sliding cavity is provided with a second ring groove. A limiting ring covers the interior of the second annular groove and is made of a hard material, and the side, facing the pushing piece, of the limiting ring abuts against the sealing diaphragm; a third ring groove is formed in the inner wall of the movable cavity, when the third ring groove is subjected to cold extrusion forming, the side, facing the limiting ring and back on to the sealing diaphragm, of the third ring groove is wrapped to form a ring edge, the ring edge abuts against and fixes the limiting ring, and the heat shrinkage rate of the limiting ring is obviously lower than that of a traditional plastic plug. The ring edge wraps and fixes the limiting ring, it is ensured that the limiting ring exerts stable pressing force on the sealing diaphragm, and the sealing performance of the sealing diaphragm is improved.

The utility model provides a kind of elastomer diaphragm seal, including static ring component and dynamic ring component, static ring component includes static ring and sealing ring, static ring outer wall is equipped with sealing groove, sealing ring is nested in sealing groove, dynamic ring component includes support ring, diaphragm ring cover, snap ring, spring, base and dynamic ring, support ring inner wall is equipped with convex ring, diaphragm ring cover upper end bottom surface and convex ring top surface abut, diaphragm ring cover lower end is equipped with clamping groove, snap ring is installed in clamping groove, spring top and support ring bottom abut, spring bottom and base are connected, dynamic ring is installed in support ring inside, dynamic ring bottom surface and diaphragm ring cover top surface abut, dynamic ring top surface and static ring outer end surface cooperation form sealing surface, to realize the function of preventing fluid leakage.The utility model diaphragm ring cover has good deformation recovery ability, can closely adhere dynamic ring, carry out elastic compensation when small stroke change of seal is generated, and spring can further stretch in large stroke change, and sealing performance, stability and reliability are higher.

Systems and methods of the various embodiments may provide a battery including a rolling diaphragm configured to move to accommodate an internal volume change of one or more components of the battery. Systems and methods of the various embodiments may provide a battery housing including a rolling diaphragm seal disposed between an interior volume of the battery and an electrode assembly within the battery. Various embodiments may provide an air electrode assembly including an air electrode supported on a buoyant platform such that the air electrode is above a surface of a volume of electrolyte when the buoyant platform is floating in the electrolyte.

An expansion tank for at least temporarily storing a pumped liquid under pressure, the including a thin wailed outer shell and a diaphragm located internally of the tank, and sealingly secured to the inner surface of the shell of the tank to divide the internal volume of the tank into a fluid-tight section for holding a gas under pressure and a fluid-tight section for holding a liquid under pressure. The diaphragm has an enlarged lip around the outer circumference of the diaphragm and being is connected to the interior portion of one of the substantially cylindrical sections via the enlarged lip being fitted tightly into a coupling ring, which in turn presses the enlarged lip of the diaphragm sealingly, circumferentially against the inner circumferential surface of the tank wall when the outer circumferential surface of the coupling ring is sealingly connect to the inner wall surface of one of the tank segments, sealing the enlarged lip against the inner surface of the tank. The tank segments are not finally assembled until after the diaphragm is sealed against the tank wall, so that the diaphragm divides the interior volume of the tank into two mutually fluid tight volumes that can be rendered fluid tight with respect to the space outside of the tank walls.

1. The name of this design product: diaphragm seal assembly. 2. Purpose of the design product: Used as a component involving a diaphragm valve, which can be attached to the outlet of a pipe during use, and the diaphragm valve (and its components) can be actuated when exposed to increased pressure in the pipe to provide a visual indication or warning of the pressure in the pipe to an observer. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: Stereoscopic drawing 1. 5. Other situations that require explanation Other explanations: The rear view, left view and right view are the same as the main view, and the rear view, left view and right view are omitted.

The utility model discloses a sterile stop valve which comprises an air cylinder, a support, a valve cover and a valve body, the air cylinder, the valve body, a valve element, the valve cover, the support, a sealing diaphragm, a sealing ferrule, a pull rod and a hoop can form a pneumatic sterile stop valve, and a piston rod and a first spring are arranged in the air cylinder. After compressed air is connected into the air source connector, the compressed air pushes the piston rod to move upwards, the piston rod drives the valve element to move upwards, the valve element is separated from the sealing face of the valve body to open the valve, and meanwhile the valve element pulls the sealing diaphragm to deform and protrude upwards. And when the valve is closed, the sealing diaphragm is concave downwards. Media in the valve cavity only make contact with the sealing diaphragm, the lower portion of the valve element and the inner cavity of the valve body, as the sealing diaphragm is tightly sealed with the valve body and the valve element all the time, when the valve is opened and closed, external microorganisms or bacteria cannot enter the valve cavity, the media in a whole pipeline system are effectively prevented from being polluted, and the quality of the whole finished product in the valve cavity is improved.

The invention relates to the technical field of diaphragm valves, and particularly discloses a replaceable diaphragm sealing assembly structure and a diaphragm valve, the replaceable diaphragm sealing assembly structure comprises a sealing ring, a center hole is formed in the sealing ring in a penetrating mode, annular grooves are formed in the two sides of the sealing ring, and the annular grooves are located on the outer side of the center hole; a connecting hole for communicating the two annular grooves is formed in the sealing ring, so that a medium in one annular groove can flow into the other annular groove through the connecting hole; the upper valve pad is fixedly arranged on one side of the sealing ring, and the upper valve pad is located on the outer side of the center hole; the diaphragm is arranged on the side, close to the upper valve pad, of the sealing ring, the edge of the diaphragm is fixedly connected with the sealing ring, and the diaphragm has elasticity so that the diaphragm can abut against the upper valve pad after being stressed. The valve pad can be replaced while the valve body is reserved.

An intelligent monocrystalline silicon diaphragm sealed pressure transmitter disclosed by the present invention comprises a transmitter body, the lower end of the transmitter body is connected with a first pipeline, and one end of the first pipeline far away from the transmitter body is provided with a mounting pipeline. The first pipeline is inserted into the mounting pipeline; one end, far away from the transmitter body, of the mounting pipeline is connected with a second pipeline; one end, close to the mounting pipeline, of the first pipeline is connected with a sealing ring, and the sealing ring is attached to the inner wall of the mounting pipeline; an annular compression groove is formed in the outer side of the first pipeline; when the transmitter body needs to be disassembled, the arc-shaped extrusion block is rotated towards the position far away from the first pipeline, so that the first pipeline loses the pressing force, the transmitter body can be disassembled, the transmitter body is convenient and rapid to assemble and disassemble, and the assembly and disassembly efficiency of the transmitter body is improved. And the sealing performance and the stability of the transmitter body can be ensured.

The present invention discloses a manual liquid medicine valve, comprising: a mounting base plate, a valve seat, a valve seat cover, an upper cover, a screw nut, a screw, a hand wheel and a torque expander; a diaphragm is arranged on the sealing surface of the valve seat, the valve seat is mounted on the mounting base plate, the valve seat cover is mounted on the valve seat, the upper cover is mounted on the valve seat cover, the screw is arranged in the screw nut, the torque expander is mounted on the screw nut, the hand wheel is connected to the torque expander, and the hand wheel is connected to the screw sleeve; when the hand wheel is rotated, the screw nut is driven to rotate through the torque expander, the screw moves downward, and the diaphragm is driven to press downward, and when the sealing surface of the diaphragm and the valve seat is completely closed, and the torque reaches the maximum torque threshold of the torque expander, the torque expander expands. The present invention overcomes the problem that the sealing surface of the PTFE diaphragm is excessively compressed due to the excessive closing torque of the manual liquid medicine valve, thereby causing the sealing surface of the diaphragm to be damaged, unable to seal and leak, or the diaphragm size changes after excessive compression, the stroke increases, and the diaphragm is pulled and ruptured.