369 results about "Diaphragm valve" patented technology

The invention discloses a diaphragm valve flow test system and method, and the system comprises a first test assembly and a second test assembly, and a first pressure measurement port of the first test assembly and a second pressure measurement port of the second test assembly are respectively communicated with a to-be-tested valve; a first test pipeline communicated with the first test assembly is provided with a circulation path in a first direction; a second testing pipeline communicated with the second testing assembly is provided with a circulation path in the first direction. The upstream and downstream pressure values of the to-be-tested valve can be accurately detected through the first pressure gauge and the second pressure gauge, and the gas flow value is detected through the flow meter and substituted into a calculation formula to obtain an accurate flow coefficient value; the upstream first testing assembly and the downstream pressure measuring device are arranged at a specific distance according to the pipe diameter of the communicating pipeline, and the accuracy of the pressure value can be effectively ensured through the limitation of the pipe diameter and the distance; the actual temperature value of the fluid in the test system pipeline is monitored through the thermometer, and the influence of the temperature on the test result is effectively reduced.

The tempering technology comprises the following steps of preparation before the technology, diaphragm tempering, discharging and inspection, tempering equipment comprises a tempering furnace body, a rotary clamping mechanism is arranged on the inner side of the tempering furnace body and comprises a rotary assembly and a clamping assembly, the rotary assembly comprises a first supporting plate, and the clamping assembly comprises a second supporting plate; a plurality of limiting discs are fixedly installed on the first supporting plate in a circumferential array mode, a driving disc is rotationally connected to the bottoms of the limiting discs, a plurality of hanging bases are arranged between the limiting discs and the driving disc in a circumferential array mode at equal intervals in a rolling mode, hanging columns are fixedly connected to the bottoms of the hanging bases, and a plurality of sets of hanging plates are arranged on the hanging columns in a circumferential array mode; according to the design, by rotating the clamping mechanism, it is guaranteed that intervals exist between the diaphragms, the position of the clamping mechanism in the tempering furnace body can be adjusted to a great extent, a static thermal boundary layer is broken through, the diaphragms can be evenly heated and cooled, and the defect that residual stress is not evenly distributed is overcome.

The invention relates to the field of fluid control devices in semiconductor liquid paths, and provides a precise control on-off valve for a semiconductor liquid path and an assembling method thereof, and the precise control on-off valve comprises a valve seat, a cylinder assembly combined on the valve seat, a diaphragm valve plate accommodated in the valve seat, and an adjusting wheel arranged on an upper cover of the cylinder. The air cylinder assembly comprises an air cylinder upper cover and an air cylinder body which are connected through a rotary lock catch structure, and a piston assembly and a limiting rod set are assembled in the air cylinder assembly. And the diaphragm valve plate is driven by the cylinder assembly to seal or separate from the valve port of the valve seat. The adjusting wheel is connected with the limiting rod set and used for adjusting lifting of the limiting lead screw, and then the maximum upward moving position of the piston assembly and the opening degree of the valve are precisely limited. The valve breaks through the bottleneck that a traditional mechanical valve is prone to abrasion and leakage, achieves the effect of precise fine adjustment of flow, and meanwhile greatly improves the flow stability of long-term operation and the clean safety of an ultra-pure fluid system.

The invention relates to the field of diaphragm valve control mechanisms, in particular to a valve actuator and a using method thereof.The valve actuator comprises a valve body and a valve deck fixed to the top of the valve body and further comprises an actuator mechanism, and the actuator mechanism comprises a lower cylinder cover, a cylinder body and an upper cylinder cover which are vertically communicated in sequence; a piston rod penetrating out of the valve deck downwards is arranged in the middle of the upper cylinder cover in a penetrating mode, and the cylinder body is divided into an upper air chamber and a lower air chamber by a piston disc outside the piston rod. The rotatable sliding ring is arranged to be communicated with the upper air pipe connector and the lower air pipe connector, two-degree-of-freedom flexible adjustment of the circumferential position and the rotation direction of the air pipe connector is achieved, and the problem of installation adaptation caused by the fact that the position of an existing actuator air pipe connector is fixed is solved; the sliding ring is unlocked by squeezing the two sets of elastic pieces to be close to the supporting ring, the air pipe connector is driven to adjust the circumferential distribution position so as to adapt to different circumferential layouts of external air path connectors, and operation is convenient and fast.

The invention relates to the technical field of diaphragm valves, and provides a grinding fluid diaphragm valve for semiconductor CMP equipment and an assembling method of the grinding fluid diaphragm valve. The diaphragm valve comprises a valve seat, a wear-resisting diaphragm piece and an adjusting assembly, an inclined annular step face of 3-10 degrees is arranged in the valve seat, the wear-resisting diaphragm piece is provided with a rubber body, a PTFE wear-resisting layer and an embedded threaded piece with a limiting part, and the adjusting assembly comprises an adjusting rod, a diaphragm connecting shaft pressing block, a hand wheel and a movable limiting adjusting nut. Static sealing of non-limit pre-pressing is achieved through slope contact, a runner dead zone is eliminated, and grinding liquid is prevented from crystallizing; the wear resistance is improved through the PTFE wear-resistant layer; the unique design of the limiting adjusting nut allows setting of a closing stroke or reserving of a closing gap, and flexible switching between a full-closing mode and a crystallization leakage prevention mode is achieved. The invention has the characteristics of high cleanliness, long service life and strong process adaptability, and is suitable for semiconductor precision fluid control.

The invention discloses a device and a method for detecting abnormal action of filling valves. The device comprises a filling cylinder, a plurality of filling valves, false cups for sealing discharge ports of the filling valves, a first pressure sensor connected with the filling cylinder, an air inlet pipe with a first diaphragm valve, an exhaust pipe with a second diaphragm valve, and a second pressure sensor connected with the false cups and the exhaust pipe. And the controller is in control connection with each component. The method comprises the steps that the false cup and the second diaphragm valve are closed, and the first diaphragm valve injects gas into the filling cylinder; the controller sequentially controls the filling valves to be opened independently, the pressure of the filling cylinder and the pressure of the exhaust pipe are monitored through the first pressure sensor and the second pressure sensor, if the pressure of the second pressure sensor reaches a first preset threshold value, opening is judged to be normal, and otherwise, opening is abnormal; the filling valves are closed after detection, the second diaphragm valve is opened to release the pressure to a second preset threshold value and then closed, and the next filling valve is switched; and if abnormity is detected, pausing and alarming. The opening state of the filling valve is accurately judged through dual pressure detection, misjudgment is avoided, efficiency is high, and cost is low.

The utility model belongs to the field of diaphragm valves, and particularly relates to an integrated dual-drive controlled fluorine-lined diaphragm valve which comprises a valve body, a valve rod is arranged on the surface of the valve body in a penetrating mode, an operation assembly is arranged at the top of the valve rod, one side of the valve body is fixedly communicated with a connecting pipe, a movable pipe is arranged in an inner cavity of the connecting pipe, and the movable pipe is connected with the valve rod. The right side of the moving pipe extends to the right side of the connecting pipe and is fixedly sleeved with a connecting disc. The operation assembly comprises a rotating box, the bottom of the rotating box is fixedly connected with the valve rod, the top of the rotating box is fixedly connected with a hand wheel, and the surface of the rotating box is sleeved with a fixing shell; by arranging the operation assembly, the inserting rod can be inserted into the inserting hole to fix the rotating box, limiting of the valve rod is achieved, the stability of the valve rod is improved, the valve rod is prevented from rotating, by arranging the adjusting assembly, the using length of the whole valve body can be prolonged by adjusting the moving pipe, and the requirements for different installation space lengths can be met.

The invention relates to the technical field of diaphragm valves, and aims to solve the problems that a traditional diaphragm valve needs to be shut down when worn parts are replaced, disassembly is tedious, and sealing performance is insufficient. The diaphragm valve comprises a valve body, a valve middle cover, a valve top cover, a connecting assembly, a valve handle, a diaphragm piece, a valve screw rod, a torsion nut, a torsion limiting buckle and a locking ring, locking clamping teeth on the outer wall of the locking ring are matched with limiting clamping teeth on the side wall of an inner cavity of the valve top cover, the position of the valve is locked, and when the valve body is in a closed state, the diaphragm piece can be separated from the valve screw rod. Replacement of the valve handle and the torsion limiting buckle is completed, and replacement of abraded parts can be completed without shutdown; the connecting assembly is composed of a connecting insertion pipe, a limiting end cap, a pressing assembly, an elastic assembly and a compression spring, rapid disassembly and assembly can be achieved without tools, and the problem that a traditional long screw is tedious in disassembly is solved.

The application relates to the technical field of agricultural irrigation water treatment, and discloses a flow regulating valve which comprises a valve seat, a valve shell, a valve core and an elastic diaphragm, the valve seat is provided with a left-right through flow hole, a cylindrical valve core is sealingly connected to the left side of the valve seat corresponding to the position of the flow hole, a plurality of openings are arranged on the valve core wall in a circumferential direction, an elastic diaphragm is sealingly wrapped on the outer side of the valve core corresponding to the positions of the openings, a water passing inner cavity which is left-right through and sealingly communicated with the flow hole is formed between the elastic diaphragm and the valve core, the valve shell is sleeved on the outer side of the valve core and sealingly connected to the valve seat at the left end, and an adjusting outer cavity which is closed at the left end and opened at the right end is formed between the valve shell, the valve seat, the valve core and the elastic diaphragm. The application has a reasonable structure, the water passing section area of the water passing inner cavity can be adjusted according to the water head, so that the flow rate is relatively stable, the whole device is controlled by hydraulic self-driving, no manual cost or electric energy consumption is needed during operation, and the operation cost is low.

The invention discloses a vacuum system for microwave plasma chemical vapor deposition. Comprising a vacuum cavity body, a processor, an air inlet system and an air outlet system, wherein the air inlet system is arranged at an air inlet of the vacuum cavity and used for accurately controlling the flow and proportion of various component gases; the air outlet system is arranged at an air outlet of the vacuum cavity and used for being linked with the air inlet system and controlling the air pressure in the vacuum cavity body through the processor; and the air inlet system is formed by converging a plurality of air inlet units to the main path filter. The mass flow meter is matched with the air inlet branch and the filter, so that elements at the rear end are protected while accurate air inlet is realized, and the stability of the whole system is improved. A temperature control pipeline is formed by a pressure controller and a first air outlet diaphragm valve B20, the temperature needed by thin film deposition can be accurately controlled, and temperature control is simple and convenient. The state requirement and maintenance of the vacuum cavity can be met, and accurate control over the temperature is achieved through accurate control over air inlet and outlet.

The invention relates to the technical field of seedling cultivation, in particular to a sweet potato seedling cultivation device. Comprising a bottom cylinder and cultivation cylinders. The device is provided with a compound motion mechanism driven by a single driving motor through a bevel gear set, the compound motion mechanism drives a rotating disc to revolve, and through meshing of a driving wheel and a driven wheel, a cultivation barrel rotates while revolving, and all-dimensional uniform illumination is provided for seedlings. The irrigation system adopts a mechanical weighing trigger mechanism, a lever is driven by the weight change of a matrix in a cultivation barrel, opening and closing of a diaphragm valve are controlled in a linkage mode, and accurate irrigation according to needs is achieved. The water and fertilizer supply system integrates a fertilizer pump and a venturi mixer, automatically sucks and mixes fertilizer liquid through negative pressure of irrigation water flow, and achieves water and fertilizer integrated synchronous supply. The system is high in integration level, realizes organic combination of illumination optimization, self-adaptive irrigation and efficient water and fertilizer management, and is beneficial to growth of sweet potato seedlings.

The invention provides a durable diaphragm valve and a control method, the diaphragm valve comprises a valve body, a valve cover, a valve rod, a diaphragm assembly, an air pump, a driver and a controller, the valve body comprises a medium inlet channel, a medium outlet channel and a valve seat part, the medium outlet channel is provided with a downstream flow sensor, the medium inlet channel is provided with an upstream pressure sensor, and the valve seat part is provided with a downstream pressure sensor; the diaphragm assembly comprises an upper diaphragm and a lower diaphragm, a deformation cavity is formed between the upper diaphragm and the lower diaphragm, an air bag is arranged in the deformation cavity, the upper end face of the middle of the air bag is connected with the upper diaphragm, and the lower end face of the middle of the air bag is connected with the lower diaphragm, so that the lower diaphragm shrinks along with the air bag to be close to the upper diaphragm and expands to be away from the upper diaphragm. The air pump is used for inflating or deflating the air bag to maintain pressure, and the air pump is provided with an air bag pressure sensor for monitoring the pressure of the air bag; the service life of circulating opening and closing of the valve is remarkably prolonged, deformation of the diaphragm can be reduced by means of inflation and deflation of the air bag, and therefore diaphragm fatigue caused by stress concentration is reduced.

The diaphragm valve comprises a valve body, a cover body, a valve assembly and a pressure applying assembly, and the valve body is provided with a liquid inlet flow channel and a liquid outlet flow channel; the cover body is connected to one end of the valve body, a valve cavity is defined by the cover body and the valve body, the valve assembly comprises a diaphragm, the outer periphery of the diaphragm is connected between the valve body and the cover body in a pressed mode, the diaphragm divides the valve cavity into a first cavity and a second cavity, and the first cavity can be communicated with the liquid inlet flow channel and the liquid outlet flow channel; the pressure applying assembly is arranged in the second cavity and used for applying acting force towards the first cavity to the diaphragm. A first limiting structure is arranged between the cover body and the diaphragm and is used for limiting the outer periphery of the diaphragm to move inwards or deform in the radial direction of the diaphragm; a second limiting structure is arranged between the valve body and the diaphragm and used for limiting the outer periphery of the diaphragm to move inwards or deform in the radial direction of the diaphragm. The upper side and the lower side of the diaphragm are both provided with the limiting structures for limiting the diaphragm outer periphery sealing part to move inwards or deform in the radial direction of the diaphragm, and the situation that the diaphragm outer periphery sealing part loses efficacy in sealing is avoided.

The utility model relates to the field of air supply discs, in particular to an uninterrupted air supply disc which comprises a disc body, high-pressure diaphragm valves, pressure sensors, pneumatic diaphragm valves, one-way valves, pressure reducing valves, pressure gauges and low-pressure diaphragm valves are symmetrically installed on the two sides of the disc body, the number of the high-pressure diaphragm valves on each side is multiple, and the multiple high-pressure diaphragm valves on each side are connected in parallel. The pressure sensor is located between one side of the pneumatic diaphragm valve and the high-pressure diaphragm valve farthest away from the corner of the disc body, the other side of the pneumatic diaphragm valve is connected with one side of the pressure reducing valve, one side of the pressure reducing valve is connected with one side of the pressure gauge, and the other side of the pressure gauge is connected with a plurality of low-pressure diaphragm valves. And two sides of the one-way valve are respectively connected with the pressure gauge and the high-pressure diaphragm valve. The product is simultaneously provided with the pneumatic diaphragm valves and the PLC end for linkage, the pressure sensor transmits a signal to the PLC end, when the pressure on one side of the disc body is low, an alarm is given, the pneumatic diaphragm valve on the low-pressure side is cut off, and the pneumatic diaphragm valve on the other side is opened at the same time, so that uninterrupted air supply is realized.

The utility model relates to the field of air supply discs, in particular to a single-side air supply disc which comprises a disc body, a diaphragm valve, a pressure reducing valve, a one-way valve and a diaphragm valve are installed on the disc body, the diaphragm valve is connected with one side of the pressure reducing valve, the other side of the pressure reducing valve is connected with one side of the one-way valve, and a precision filter is further installed on the disc body. And one side of the precision filter is connected with the other side of the one-way valve, and the other side of the precision filter is connected with the diaphragm valve. The precise filter is arranged at the outlet of the pressure reducing valve, so that the use cleanliness of gas at the rear end can be kept, the basic requirements of production of the CVD equipment can be met, and gas can be continuously supplied to the CVD equipment.

The application relates to the technical field of air valves, and provides an air valve, an air path system, a wearable device and a blood pressure measuring device, which can solve the problem of low working reliability of the air path system of the blood pressure measuring device in the related art. The air valve comprises a valve body and a diaphragm arranged in the valve body, the valve body has a first cavity located at a first side of the diaphragm and a second cavity located at a second side of the diaphragm; the valve body is provided with a first contact part and a second contact part, the first contact part is located at the first side and is arranged adjacent to the first cavity, the first contact part surrounds a gas leakage cavity, one side of the gas leakage cavity close to the diaphragm is provided with a cavity opening, and the second contact part is located at the second side; a first gas hole of the valve body is in communication with the first cavity, a second gas hole is in communication with the second cavity, and a gas leakage hole is in communication with the gas leakage cavity; the diaphragm comprises a first diaphragm area and a second diaphragm area, the first diaphragm area is provided with a first air passage, and the second diaphragm area is provided with a second air passage. The application can be used on wearable devices such as smart watches.

The utility model provides a kind of air supplementing device of single-stage octagonal magnetron sputtering machine, including external air pipe, gas disperser and metal sealing joint, external air pipe gas inlet end is divided into fast filling branch and slow filling branch, the first diaphragm valve and the second diaphragm valve are respectively arranged in fast filling branch and slow filling branch, for independent control branch on-off, gas control knob is located in the input end of second diaphragm valve, for accurately setting left branch gas flow, external air pipe output end is sealed into cavity, gas disperser is arranged in external air pipe output end, dense small gas holes are arranged in the input end of gas disperser, for evenly diffusing gas and preventing cavity bottom particles from lifting and damaging wafer, the device can accurately supplement air to balance air pressure inside and outside cavity, facilitate safe opening valve, and air supplementing can effectively protect wafer.

An exhalation valve for a respiratory device comprises a valve housing (12) with a fluid line (20, 22) and with a valve diaphragm (14) held by a holding portion (42) of the valve housing (12), wherein the fluid line (20, 22) has a first line portion (20) with a valve seat (26) and a second line portion (22) which differs from the first line portion (20), a valve body (36) formed with the involvement of the valve diaphragm (14) rests on the valve seat (26) in a closed position of the diaphragm valve (10) and interrupts a flow path between the first line portion (20) and the second line portion (22), the valve body (36) of the valve diaphragm (14) can be lifted from the valve seat (26) along an extended imaginary virtual lifting path which serves as a virtual reference path (Z), and at least one region of the valve housing (12) is designed as a thermal deformation region (78, 80, 82, 84) made of a polymer which has a dimensional stability temperature of less than 115°C, measured according to ASTM D648 at a test load of 66 psi, and / or a dimensional stability temperature of less than 100°C, measured according to ASTM D648 at a test load of 264 psi, the thermal deformation region (78, 80, 82, 84) being a shell-shaped region with a wall thickness of less than 0.9 mm.

This invention provides a medical injection one-way valve, comprising a front housing and a rear housing connected together, forming a cavity between them and extending a connecting tube communicating with the cavity. A limiting block is provided within the cavity of the rear housing, and a gasket valve core overlaps within the cavity of the front housing, with a gap between the gasket valve core and the limiting block on the side closest to the rear housing. The contact surface between the gasket valve core and the front housing has a recessed portion with radially distributed reinforcing ribs. When fluid flows in the forward direction, it impacts the gasket valve core, causing it to deform and contact the limiting block, forming a stable passage through the gap; when flowing in the reverse direction, the non-recessed surface is pressed tightly against the front housing, blocking the backflow. This invention increases the pressure resistance of the gasket in the one-way valve to 500 kPa, effectively solving the problems of easy bulging and insufficient sealing of traditional diaphragm valve cores.

The utility model belongs to the field of dairy production discloses a kind of processing device for reducing yogurt viscosity, including material tank, water pump, liquid outlet pipeline, diaphragm valve and control box, the input end of water pump is connected material tank, and output end connects liquid outlet pipeline;Diaphragm valve is installed on liquid outlet pipeline;Control box is electrically connected with water pump.Yogurt is subjected to high-speed shearing by impeller in water pump to realize preliminary viscosity reduction, and then realizes secondary viscosity reduction by diaphragm valve extrusion.The utility model can not only reduce the viscosity of yogurt, but also improve detection efficiency and accuracy;The utility model is suitable for dairy production industry, for realizing viscosity reduction to large viscosity yogurt.

A gas-blocking sterile drip bottle capable of externally treating residual liquid, comprising: a drip head (1), a bottle body (2), and a bottle cap (3). The drip head (1) comprises a drip nozzle (11), a valve body (12), a diaphragm valve (13), and a sterilization filter element (14). The valve body (12) is provided with a backflow groove (1231), an air return hole (1233), an air collection groove (124), a liquid inlet hole (125), and several isolation grooves (121). A hollow spring column (1242) is arranged in the air collection groove (124). The sterilization filter element (14) is arranged on the valve body (12) in a sealed manner. The diaphragm valve (13) is arranged on and blocks the air collection groove (124). A return spring (4) is arranged between the diaphragm valve (13) and the hollow spring column (1242). A conical valve core (134) is arranged on the diaphragm valve (13). The drip nozzle (11) is clamped on the valve body (12) in a sealed manner. The drip nozzle (11) abuts against the diaphragm valve (13). A drip column (113) is arranged on the drip nozzle (11). A conical drip hole (114) is arranged in the drip column (113). A dispenser (15) is sleeved on the drip nozzle (11). The dispenser (15) is attached to the drip nozzle (11) in a sealed manner. Several drainage grooves (153) are uniformly distributed on the circumference of the dispenser (15). The dispenser (15) is attached to the valve body (12) in a sealed manner.

The present invention provides an improved diaphragm valve that maintains good symmetry to minimize parasitic motion resulting from any thermal expansion, while eliminating sliding or rotation of joints and surfaces that cause friction. [Solution] A diaphragm valve is provided. The valve body includes a valve passage including an inlet passage and an outlet passage. The diaphragm valve further includes a valve seat adjacent to the valve passage. The valve also includes a diaphragm that is movable to be separated from or in contact with the valve seat. Furthermore, the valve includes a piston coupled to the diaphragm and a flexure assembly coupled to the piston. The input force outputs a force that is applied to the piston in a first direction and results in a force that, when the diaphragm is normally in the closed position, results in a force that moves the diaphragm to the open position, and when the diaphragm is normally in the open position, results in a force that moves the diaphragm to the closed position.

The application discloses a long-service-life diaphragm valve with an anti-overload torque limiting mechanism and relates to the field of pipeline intercepting equipment. The valve body is provided with through holes at both ends, a cavity is formed in the valve body, the cavity is communicated with the through holes at both ends of the valve body, mounting holes are formed in the valve body, the mounting holes are communicated with the cavity, a valve cover is mounted at the mounting holes of the valve body, the mounting holes are closed by the valve cover, a valve rod is slidably arranged on the valve cover, diaphragms are arranged in the mounting holes, the valve rod drives the diaphragms to separate the through holes at both ends of the cavity, a plurality of valve covers, valve rods and diaphragms are arranged in the corresponding mounting holes, a driving assembly is mounted on the valve body, the driving assembly drives all the valve rods to synchronously slide, and when the valve rod slides towards the cavity, all the diaphragms abut against each other to close the cavity. The application has the effect of prolonging the service life of the diaphragm valve.

The ultra-pure compressed air supply system in the optical lens storage facility comprises a machine box arranged on the periphery of a warehouse, and an air compressor, a first buffer tank, a drying machine, a filtering assembly and a second buffer tank which are sequentially connected through a first air pipeline are arranged in the machine box; the air outlet end of the first air pipeline is communicated with a fold line coil pipeline in the warehouse, a sensor assembly and a purifier are sequentially arranged on the fold line coil pipeline, and purified gas is shunted and conveyed into optical equipment through a second air pipeline. According to the scheme, the ultra-pure compressed air supply system is designed according to the storage requirement of a specially-customized lens, the heatless regeneration adsorption type drying machine is combined with the purifier, ultra-low-humidity air is provided, and the lens is prevented from being mildewed or oxidized; the broken line disc pipeline and flow division design can be flexibly arranged according to the warehouse layout, and the large-area or multi-area gas supply requirement is met; the diaphragm valve and the two-stage pressure reducing valve precisely control airflow distribution, and the gas utilization requirements of different optical devices are met.

The utility model relates to the technical field of pneumatic diaphragm valves, and discloses a pneumatic diaphragm valve convenient to disassemble and assemble, which comprises a pneumatic diaphragm valve body, a connecting installation seat and a sealing valve cover, the upper end of the pneumatic diaphragm valve body is fixedly provided with the connecting installation seat, and the upper end of the connecting installation seat is movably provided with the sealing valve cover. Disassembly and assembly connecting mechanisms are arranged on the two sides of the pneumatic diaphragm valve body. The dismounting and mounting connecting mechanism comprises dismounting buttons and a first mounting inner groove, the dismounting buttons are movably mounted on the two sides of the connecting mounting base, and the first mounting inner groove is formed in the connecting mounting base. According to the pneumatic diaphragm valve convenient to disassemble and assemble, by installing the disassembling and assembling connecting mechanism, the assembling and disassembling capacity of the pneumatic diaphragm valve is improved, in the actual using process, the sealing valve cover and the connecting and installing base can be conveniently and rapidly connected and installed according to using requirements, disassembling operation can be conveniently conducted on the sealing valve cover and the connecting and installing base, and disassembling, assembling and using convenience is improved.

1. The name of the design product: diaphragm valve (2502). 2. The use of the design product: the design product is used for controlling the water flow on-off valve. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: front view.

A valve diaphragm for a diaphragm valve includes a clamping section aligned with an imaginary vertical plane of an actuation axis, and a functional section surrounded by the clamping section. The functional section includes at least two flexing sections and a web-shaped sealing section that separates the flexing sections and connects two portions of the clamping section. The sealing section is configured to have, at least in part, a greater compressive yield point and / or a smaller compression set in a direction perpendicular to its longitudinal extent than along its longitudinal extent. This directional difference in mechanical properties allows the sealing section to maintain dimensional stability under compressive load while permitting flexibility along its length for improved sealing performance and durability.

The protective cover for the diaphragm valve comprises an outer cover, a reinforcing piece and a sleeve, the sleeve is provided with a through middle through hole, and the top of the sleeve is provided with a first installation end face, a second installation end face, a first fixing piece and a second fixing piece. The first fixing piece is installed on the top of the inner side of the first installation end face, and the second fixing piece is installed on the top of the inner side of the second installation end face. According to the protective cover for the diaphragm valve, linkage is achieved through the outer cover, the reinforcing piece and the sleeve, so that the overall structural strength is improved, and the protective cover is not prone to being damaged when being impacted by external force.

The invention relates to a valve diaphragm (10) for a diaphragm valve, the valve diaphragm (10) comprising: a clamping section (12) following an imaginary perpendicular plane of an actuating axis, and a functional section (16) surrounded by the clamping section (12); wherein the functional section (16) comprises: at least two walking sections (18); and at least one web-shaped sealing section (20) separating the at least two walking sections (18) from one another, wherein the sealing section (20) has a greater compression limit and / or a smaller compression set perpendicular to its longitudinal extent (22) than along its longitudinal extent (22).