540 results about "Diaphragm valve" patented technology

The utility model discloses a double-butterfly-valve sterile medicine transfer system, and relates to the technical field of pharmacy. Comprising a turnover medicine storage tank, a driving butterfly valve, a driven butterfly valve, a powder storage tank and a sterile liquid medicine storage bag, a discharging port of the turnover medicine storage tank is connected with the driving butterfly valve through a first connecting piece, and the driving butterfly valve is connected with the driven butterfly valve through a second connecting piece; the passive butterfly valve is connected with a feeding port of a powder storage tank through a third connecting piece, a first diaphragm valve is arranged at a discharging port of the powder storage tank, and the discharging port of the powder storage tank is connected with a sterile liquid medicine storage bag; by adopting the design of double butterfly valves, sterile connection is established between the turnover medicine storage tank and the powder storage tank, the reliability of hoop connection is high, the structure is simple, the operation complexity is low, the universality is high, the flexibility is high, and the cost is low.

The application relates to the technical field of diaphragm testing, in particular to a diaphragm valve diaphragm service life testing device which comprises a box body and further comprises a first pipeline, a second pipeline, a water pump, an intermediate pipeline, a first testing part and a control part, wherein: one end of the second pipeline is in communication with the upper end of the first pipeline, and the other end of the second pipeline is in communication with the intermediate pipeline; the water pump is connected in series on the second pipeline; the first testing part comprises a testing pipeline, one end of the testing pipeline is in communication with the intermediate pipeline, the other end of the testing pipeline is located in the interior of the box body, the testing pipeline is provided with an opening, a clamping piece is arranged on the periphery of the opening, the clamping piece is used for mounting a diaphragm, a circular ring is arranged on the periphery of the clamping piece, a water-sensitive sensor is arranged in the circular ring, a driving part is arranged above the testing pipeline, the driving part is drivingly connected with a tension sensor, and a connecting rod is arranged at the bottom of the tension sensor. The diaphragm deformation life and the diaphragm rupture life can be simultaneously detected, and the comprehensiveness of diaphragm detection is improved.

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 utility model provides a dental treatment machine for pets, which comprises a mobile phone operating platform for performing dental treatment on the pets, the mobile phone operating platform comprises a plurality of hanger valves and a plurality of mobile phones which are matched with the hanger valves and controlled by the hanger valves, and the dental treatment machine for the pets further comprises a gas circuit and a water circuit, the hanger valve is communicated with the air channel and controls the opening and closing of the air channel; the mobile phone is communicated with the air path and the water path so as to realize air inlet and outlet and water inlet and outlet of the mobile phone; and the gas path and the water path are divided into multiple paths through the same multi-union diaphragm valve and are respectively communicated with the plurality of mobile phones. The water path and the air path are divided into multiple paths by utilizing the multi-connected diaphragm valve, so that the air path and the water path which are divided into multiple paths are respectively connected to a plurality of functional devices, especially a plurality of mobile phones, the control and the operation of the plurality of functional devices are realized, the whole system is very compact in structure and small in size, and the cost is also saved.

The utility model relates to a feed liquid atomization device, and belongs to the technical field of cigarette manufacturing. The device comprises a cold compressed air heating steel pipe spirally wound on a steam pipeline, a glass fiber thermal insulation material, a thermal insulation cover shell, a pneumatic diaphragm valve, a PLC (Programmable Logic Controller), a temperature sensor, a cold compressed air supply device and a double-medium nozzle, an inlet of the cold compressed air heating steel pipe is communicated with a cold compressed air supply device, an outlet of the cold compressed air heating steel pipe is communicated with the double-medium nozzle pre-filled with feed liquid through a hot compressed air circulation pipeline, and a compressed air stop valve is arranged on the hot compressed air circulation pipeline; the heat preservation cover shell completely wraps the cold air heating steel pipe, the space between the heat preservation cover shell and the cold air heating steel pipe is filled with glass fiber heat preservation materials, and an inlet of the cold air heating steel pipe and an outlet of the cold air heating steel pipe both extend out of the heat preservation cover shell. The accuracy of the total feeding proportion can be ensured.

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.

A diaphragm valve for an ultra-pure pipeline comprises a valve deck, an upper valve body and a lower valve body, the upper valve body and the lower valve body are fixedly connected through a bolt, a valve rod, a valve clack, a medium inlet channel and a medium outlet channel are arranged in the lower valve body, a mounting channel is formed in the lower valve body, a plurality of positioning guide grooves which are vertically formed at intervals are formed in the inner wall of the mounting channel, and the positioning guide grooves are communicated with the valve deck. The outer wall of the valve cover is provided with a positioning guide block matched with the positioning guide groove, the bottom of the installation channel extends to be provided with a limiting check ring, the bottom of the valve clack is connected with a cushion membrane piece and a diaphragm piece, the periphery of the cushion membrane piece and the periphery of the diaphragm piece extend to the position between the limiting check ring and the valve cover, and the valve cover is provided with a limiting step. The upper valve body is fixedly connected with the lower valve body in a threaded mode and then abuts against the limiting step, so that the valve deck is fixedly installed in the installation channel, and sealing connection is formed.

The invention provides a self-adaptive load fluctuation hydrogen production system control method and related equipment, and the method comprises the steps: obtaining the output current of a hydrogen production power supply and the internal and external pressure difference of a hydrogen-oxygen separator in real time, calculating the load change rate of an electrolytic cell according to the output current, and when the load change rate of the electrolytic cell is greater than or equal to a preset threshold value, calculating the load change rate of the electrolytic cell according to the output current; a time delay compensation factor is introduced to calculate the first opening degree of the hydrogen-oxygen side pneumatic diaphragm valve, and feedforward control is conducted on the hydrogen-oxygen side pneumatic diaphragm valve through an executing mechanism so that the hydrogen-oxygen side pneumatic diaphragm valve can meet the first opening degree; otherwise, the pressure difference and the load ratio of the electrolytic cell serve as input of the fuzzy controller, the second opening degree of the hydrogen-oxygen side pneumatic diaphragm valve is calculated according to output of the fuzzy controller, and fuzzy PID control is conducted on the hydrogen-oxygen side pneumatic diaphragm valve through the executing mechanism so that the hydrogen-oxygen side pneumatic diaphragm valve can meet the second opening degree. The control precision of the hydrogen production system can be improved, and stable operation of the hydrogen production system is guaranteed.

The invention discloses a fluid pipeline system diaphragm valve fault self-adaptive identification method, relates to the technical field of diaphragm valves, and solves the problems that signal characteristics are not subjected to fine analysis and are easily interfered by fluctuation of normal working conditions. The method comprises the following steps: acquiring a to-be-determined wave band, comparing the to-be-determined wave band with a preset standard waveform, identifying a to-be-verified amplitude associated with a corresponding processing process based on a corresponding movement comparison processing process, carrying out abnormity determination on a diaphragm valve based on a specific numerical value of the to-be-verified amplitude, and confirming an abnormal diaphragm valve. The specific accuracy of amplitude verification in the subsequent movement process is facilitated, the abnormal influence caused by signal fluctuation can be effectively reduced, and the specific accuracy in the valve abnormality determination process is improved.

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 utility model belongs to the field of air filters, and particularly relates to a high-pressure dewatering filter which comprises a barrel-shaped main body, a pressure regulating assembly, a valve assembly and a filter element, the valve assembly and the filter element are arranged in the main body, and an air inlet and a drain valve are arranged on the lower portion of the main body. The pressure regulating assembly is a spring type pressure regulating assembly; the valve pad and the ball valve element are matched and placed in the valve cavity. A pad hole connected with the middle channel is formed in the bottom of the valve pad, and a first pad channel connected with the first transverse channel is formed in the side face of the valve pad. The upper end of the valve rod abuts against the lower portion of the pressure adjusting assembly, and the lower end of the valve rod abuts against the ball valve element. The pressure regulating assembly abuts against the ball valve element through the valve rod, so that the valve element and the valve pad are in contact sealing. Compared with a conventional filter of a diaphragm valve structure, the spherical valve element and the valve pad are high in abrasion resistance and can work for a long time under high pressure. In addition, the structure is easy to disassemble and assemble, and the filter element can be conveniently replaced.

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.

Diaphragm valve housing, with at least two axially extending fluid channels (10, 12) which are aligned with and converge towards each other, a partition (38) between the fluid channels (10, 12) which has a free end towards a valve chamber (32) and with its free end forms a valve seat (26) which lies between adjacent openings (28, 30) of the fluid channels (10, 12), wherein the fluid channels (10, 12) each have a cylindrical axial section (34, 36) and a channel end section (40, 42) adjoining the axial section (36) and extending laterally and obliquely towards each other, towards the valve chamber (32) relative to the axial direction (A) of the axial sections (34, 36), which are separated by the partition (38), characterized in that the partition (38), viewed in axial longitudinal section, has a axial direction (A) flatter inclined section (44, 46) near the valve seat (26) and an adjoining,has a steeper section (48, 50, 82, 84), wherein the inclined section (44, 46) and the steeper section (48, 50, 82, 84) are formed in longitudinal section view by a straight section, wherein the inclined section (44, 46) transitions at its lateral ends, perpendicular to the axial direction (A) and viewed in plan view of the valve seat (26), into arcuate sections (52, 54), and wherein the arcuate sections (52, 54) transition into the steeper sections (48, 50) towards the axial section (34, 36).

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.

A diaphragm valve with a leak detector includes a chamber, a diaphragm, and a detector. The diaphragm moves within the chamber. The chamber is blocked when the diaphragm is driven to the bottom of the chamber. The detector is installed above the diaphragm to detect liquid leakage, and the detector is connected with the outside.

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.

1. The name of this design product: Diaphragm valve transparent protective cover. 2. Purpose of this design product: used to observe the color of the fluid inside the valve body and whether there are bubbles and other information. 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: three-dimensional picture.

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 invention relates to a connection device (100) for a diaphragm valve, comprising: a receptacle (102a-b) having a distal opening (104) which releases a receiving space (106) for receiving a portion of a diaphragm pin of a valve diaphragm, wherein at least one laterally arranged through-opening of the receptacle (102a-b) leads into the receiving space (106); at least one first securing element which is arranged in the at least one lateral through-opening such that it can move at least perpendicular to a longitudinal axis of the connection device (100); and at least one second securing element (112) which is mounted on the receptacle (102a-b) such that it can move along the longitudinal axis, wherein, in a first position relative to the receptacle (102a-b), the second securing element (112) pushes the at least one first securing element through an inner opening of the at least one through-opening into the receiving space, and wherein, in a second position relative to the receptacle (102a-b), the second securing element (112) releases the first securing element for movement out of the receiving space (106).

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.

Diaphragm valve (1) for influencing a fluid flow, comprising a valve housing (3) in which a valve chamber (26) is formed, which is delimited by a first wall section (33) and a second wall section (80), wherein a first fluid connection (40) and a second fluid connection (41) are formed on the first wall section (33), which are each connected in a fluidic communication manner to the valve chamber (26), and comprising a valve diaphragm (65) made of a rubber-elastic material, which is accommodated in the valve chamber (26) and has a circumferential sealing edge (67) on an outer circumference, which is sealingly connected to the valve housing (3), wherein a sealing surface (70) of the valve diaphragm (65) facing the first wall section (33) delimits a fluid chamber (27) together with the first wall section (33) of the valve housing (3),wherein the valve membrane (65) is designed, in a first deformation state, for a sealing engagement with a first valve seat (47) associated with the first fluid connection (40) and arranged in the fluid chamber (27), and, in a second deformation state, for a release of the first valve seat (47), wherein a back surface (68) of the valve membrane (65) facing away from the sealing surface (70) is fixed at least in regions to a wall region (89) of the second wall section (80), which is arranged opposite the first wall section (33), and wherein a circular-cylindrical fastening pin (71) extending along a pin axis (34) is formed on the back surface (68), which fastening pin is oriented transversely to the sealing surface (70), and wherein the fastening pin (71) has, at a distance from the back surface (68), a projection (72) extending transversely to the pin axis (34) and designed as an annular collar,which is designed for locking the fastening pin (71) in an undercut (90) of the valve housing (3) and / or that a projection of the fastening pin (71) onto the back surface (68) covers less than 10 percent of the back surface (68).