468results about "Aeration devices" patented technology

The present invention discloses a hydraulic brake valve and its exhaust process method. The valve body of the exhaust structure touches and presses the operating mechanism at the top of the valve body component of the valve body. A working spring is installed on the valve plug of the valve body. The valve core is installed in the central hole of the valve body and the central counterbore of the plug. The valve core is inserted into the center of the plug, and the counterbore presses the return spring. The return spring is installed on the spring seat, and the spring seat is installed in the counterbore of the plug. The roller of the operating mechanism touches and presses the plug in the valve body to form action and reaction forces, and promotes the operating mechanism and the valve core to touch and press and move to work. The valve core can slide along the inner wall of the valve body. An exhaust hole is provided on the side wall of the valve core. A plug for blocking the other end of the valve body is provided in the valve body, and a spring seat abutting against the plug is further provided in the plug. A return spring is installed between the spring seat and the valve core. The advantages are: avoiding abnormal noises and cavitation phenomena caused by gas accumulation to the hydraulic brake valve, ensuring the normal transmission and circulation of hydraulic oil in the pipeline, and eliminating potential hazards of the hydraulic braking system.

The invention discloses a combined type air inlet and outlet valve, which relates to the technical field of air inlet and outlet valves, and comprises a valve body and a valve cover arranged at the upper part of the valve body, a floating ball is arranged in a floating ball cover, a sealing ring is arranged at the lower part of an air outlet, a clamping assembly connected with the floating ball cover is arranged outside the floating ball, and a box body with an open upper part is arranged below the floating ball cover. A one-way valve is arranged on the lower portion of the box body, a floating block is arranged in the box body, a fixing assembly used for fixing the clamping assembly is arranged on the floating block, a buffering anti-collision assembly is arranged on the fixing assembly, and a guiding anti-rotation assembly is arranged outside the floating ball. The air inlet and exhaust valve can prevent the floating ball from closing and sealing the exhaust port in the mass exhaust process, influence on mass exhaust work is avoided, influence on the closing function of the exhaust port due to normal floating of the floating ball under the action of water flow in the follow-up process is avoided, meanwhile, speed reduction can be achieved through triple buffering, and the service life of the exhaust port is prolonged. And impact damage to the floating ball and other related parts when the floating ball descends can be avoided.

A valve device includes: a housing including a peripheral wall, a bottom wall, and a partition wall; and a float valve accommodated in a valve chamber to be able to ascend and descend, thereby opening and closing an opening portion. A slit extends continuously over the peripheral wall and the bottom wall, and a deflectable and deformable elastic piece is formed via the slit. The elastic piece has a free end on the bottom wall, and the free end is provided with a float valve support portion configured to support the float valve.

Disclosed are an oilproof assembly, an oilproof vent valve, and a device with an oil tank. The oilproof assembly includes: a valve body, wherein a cavity is formed in the middle, the valve body includes a first end and a second end; a first filter element arranged in the cavity at the first end; a limiting part arranged in the cavity at the second end; and an elastic part arranged between the first filter element and the limiting part and configured to apply a thrust to the filter element after the first filter element absorbs oil to swell, so that at least part of oil absorbed in the first filter element can be extruded by the thrust of the elastic part. According to the oilproof assembly, the oilproof vent valve, and the device with the oil tank, the maintenance cost can be reduced, and the service life can be prolonged.

A vented precipitation guarding manhole cover assembly, comprising: a manhole cover having a top exterior surface and a bottom interior surface; a vent opening extending through the manhole cover between the top and bottom surfaces; a valve assembly in fluid communication with the vent opening and extending from the bottom interior surface, the valve assembly configured to extend from the bottom interior surface at least partially inside the manhole, the valve assembly operable between an open position, to enable gas to exit from the manhole, and a closed position, to prevent the flow of fluid from the top exterior surface into the manhole.

A pneumatic gauge / pressure control device includes a first body, a pneumatic gauge that is fixed to the first body, and a second body that is rotatable relative to the first body and gauge to: (i) a fill position in which compressed air is communicated into a system; (ii) a vent position in which compressed air is vented from the system. The second body activates a first switch when rotated in the first direction and activates a second switch when rotated in the second angular direction. A method for controlling the flow of compressed air relative to a pneumatic system includes rotating a second body in a first or second directions relative to a pneumatic pressure gauge to fill or vent positions to cause compressed air to be introduced into or vented from the pneumatic system, respectively.

A valve assembly includes a body engageable with a container, an internal cavity, and a vent outlet. A wall divides the internal cavity into a first chamber and a second chamber, the first chamber being between the bottom end of the body and the wall, and the second chamber being between the top end of the body and the wall, in communication with the vent outlet. An umbrella valve is coupled to the wall and has a central passage and an umbrella portion. The umbrella portion is positioned within the second chamber and is configured to engage a top side of the wall. The umbrella portion is configured to deform away from the top side of the wall to vent a gas along a first pathway from the first chamber to the vent outlet in response to pressure within the first chamber exceeding a cracking pressure of the umbrella valve.

The present disclosure relates to a quick fill device for use with a valve assembly, and related methods of filling a pressure vessel. A valve assembly that can be secured to a pressure vessel includes a vessel, a fill valve, and an overfill valve. A preferred example of the device includes a body, a valve trigger pin, a vent trigger pin, and a handle. A valve engagement end of the body can be releasably secured within the vessel. At this point, moving the handle to an open position causes the valve trigger pin to force the fill valve to an open configuration, and causes the vent trigger pin to force the overfill valve to a fluid venting configuration. A rigid fill tube is in fluid supply communication with a fuel supply port of the body. The fill tube and the handle can be elongate, and extend in a common direction.

An air valve assembly includes a housing defining an internal channel configured to receive a first member, the first member is fluidly connected to an air source, a plunger member positioned in the internal channel and configured to slide relative to the housing, a biasing member positioned in the internal channel and configured to apply a biasing force onto the plunger member, and a sealing member positioned in the internal channel and defining a first inflation aperture, the plunger member slidably received by the first inflation aperture. In a first inflation configuration, the first member is configured to form a magnetic connection with the sealing member and contact the plunger member to overcome the biasing force, the plunger member is configured to responsively slide relative to the first inflation aperture to facilitate a flow of air between the sealing member and the plunger member.

The invention discloses a low-temperature ball valve and a using method thereof. The ball valve comprises a valve body, a ball core and a valve rod. A fixed disc with a through hole is fixed on the valve rod; the valve rod and the ball core can relatively rotate by a certain angle and rotate together with the ball core at the limiting position of rotation. The valve cover is provided with a second inner cavity communicated with the middle cavity and a pair of first inner cavities, and the valve body is provided with a closed pipeline connected to the middle cavity and the upstream of the valve body; when the valve rod is located at the first limit position A, the through hole communicates with one first inner cavity of the valve rod for pressure relief. When the valve rod is located at the position B, the through hole communicates with the second inner cavity, and the pipeline is opened for exhausting; when the valve rod is located at a second limit position C, the through hole is communicated with the other first inner cavity for pressure relief; pressure relief treatment can be conducted on the middle cavity when the ball core is closed and opened, exhaust treatment can be conducted on the middle cavity, vaporized low-temperature gas in the middle cavity is reduced, and damage to a pipeline caused by the fact that the low-temperature gas enters the pipeline is avoided.

The invention relates to the field of automobile fuel tank valves, in particular to an exhaust valve suitable for a longitudinal compact fuel tank, which comprises a shell, a group of cavities are arranged in the shell, each cavity comprises a liquid inlet cavity, an air outlet cavity and a runner cavity, the bottom of each liquid inlet cavity is provided with a runner inlet extending out of the bottom of the shell, and the air outlet cavity is provided with an air outlet communicated with the outside of the shell; the runner cavity is communicated with the liquid inlet cavity and the air outlet cavity; a sliding cavity allowing the floating body to slide longitudinally is formed in the liquid inlet cavity, and the floating body is arranged in the sliding cavity; an exhaust port is formed in the upper end, corresponding to the sliding stroke of the floating body, of the liquid inlet cavity and communicates with the liquid inlet cavity and the flow channel cavity; the plug is movably arranged in the air outlet cavity, the plug blocks the opening between the air outlet cavity and the flow channel cavity in a natural state, and a first elastic element is arranged at the lower end of the plug so that the plug can elastically abut against the lower end of the opening. The leakage-proof performance and the longitudinal compactness of the exhaust valve can be improved, and the exhaust valve adapts to a longitudinal compact oil tank.

The invention relates to a pressure equalization device (1; 100, 100; 200), comprising: a hollow cylindrical bottom part (10; 210) which comprises, on a first axial end (12) on the radial outer side, a fastening region (14) for fastening to the housing and, on a second axial end (18), a connecting region (20); and an upper part (60) having a cylindrical wall (62) and a base (64), the upper part being connected to the base part (10; 210) is engaged with the connecting portion (20) on the second axial end (18) of the first axial end (18). The hollow cylindrical bottom part (10; 210) also has an annular projection (30) projecting radially inward, which projection defines a central opening (44) and, on the side facing the second axial end (18), has a first, preferably annular clamping structure (47), in particular a first annular groove (48), and a plurality of channels (38) arranged annularly between the central opening (44) and the first clamping structure (47). According to the invention, the upper part (60) comprises a second clamping structure (66) which protrudes axially from the base (64), in particular is annular and / or has a second groove (70), and preferably extends in an axial direction parallel to the cylindrical wall (62). A gas permeable membrane (50) covers the central opening (44), and an elastic sealing element (80; 180); 280) between the bottom part (10; 210) and the second clamping structure (66) of the upper part (60) are provided with a fixing region (82; 182, 182; 184) extending radially inward in the direction of the central opening (44) and having a sealing region (84; 184, 184; 284) and seals the plurality of channels (38). Thus, a ventilation and ventilation channel extends through the central opening (44) and the gas permeable membrane (50), and an emergency ventilation channel extends through the plurality of channels (38) and the resilient sealing element (80; 180); 280) in the housing.

Pressure equalization device comprising a cage (1) with a gas passage opening (2), wherein the gas passage opening (2) is enclosed by a valve seat (3) and a diaphragm (4) arranged in the cage (1), which is held on a retaining element (5) and is designed as a valve body (6), wherein the diaphragm (4) can be snapped, depending on the differential pressure, from a retaining position (7) in which it seals against the valve seat (3) to an opening position (8) in which it is lifted from the valve seat (3) and allows a direct passage through the gas passage opening (2), wherein the diaphragm (4) has a bistable instability (9) or an instability (9) with a metastable and a stable state.

A ventilation system is provided for persistent natural ventilation by circulation of air between an interior space and an external environment. In one example, the ventilation system includes an air intake including a domed upper cover with exterior windows which allow air to circulate through an upper chamber, a baffle around floatable elements, the baffle including an annular protective screen and valve windows, a lower chamber fluidly coupled to each of the upper chamber via the baffle and an interior duct via a main window thereof, wherein the interior duct is fluidly coupled to the interior space, and wherein the floatable elements are positioned on respective seats when no liquid is present, each of the seats spaced a distance opposite to a respective one of the valve windows. Responsive to liquid entering the upper chamber via the exterior windows, the valve windows may be automatically blocked by the floatable elements.

A fluid control system with a fast fill valve (200) for expedited filling and draining of closed-loop systems allowing for temporarily opening the loop to allow filling without a separate vacuum process The valve operates in two positions: an open position for rapid, unidirectional fluid ingress and passive air egress and a closed position for a secure, sealed state during normal operation. Some examples include vacuum assisted air egress in parallel with filling.

Air valves for cases are shown and described. In one embodiment, an air valve includes an insert, a receiver, and spacer. In other examples, embodiments include a case having an air valve. Examples of an air valve system may include an insert assembly, a receiver assembly, and a sealing assembly. The result is a cost effective, reliable, easy to use, air venting system.

To provide an oilproof assembly which enables reduction of maintenance costs and extends a useful life, and to provide an oilproof vent valve and a device with an oil tank.SOLUTION: An oilproof assembly includes: a valve body 1 which is provided with a cavity located in the center and penetrating through both ends of the valve body, and includes a first end and a second end, and in which an oil passage port allowing communication between the cavity and the outside is provided at the first end and the cavity communicates with an external ventilation passage at the second end; a first filter element 2 provided in the cavity at the first end; a stopper member 3 provided in the cavity at the second end and provided with a through hole for ventilation; and an elastic member 4 provided between the first filter element and the stopper member. The elastic member is configured to apply a thrust to the filter element after the first filter element absorbs oil to swell, so that at least part of the oil absorbed in the first filter element can be extruded by the thrust of the elastic member.SELECTED DRAWING: Figure 5

A fault detector for detecting the occurrence of a rapid pressure rise within electrical equipment. The fault detector has a chamber having an interior, a diaphragm in sealing engagement with the chamber and an aperture providing fluid communication between the interior of the chamber and the external environment of the chamber.

The invention provides a substrate storage container including a valve body for improving the reliability of valve opening and closing operation. A substrate storage container is provided with: a container main body for storing a substrate; a cover body for closing the opening of the container main body; and a valve body (40) for controlling the flow of gas to the container main body, the valve body (40) having: a block member (41) in which communication paths (416, 417) for communicating the outside and the inside of the container main body via a valve hole (466) are formed; and a plate-shaped valve member (45) that opens and closes the valve hole (466) and is elastically deformable, and a valve seat (467) around the valve hole (466) and a sealing surface (452a) of the valve member (45) are bent toward the downstream side in the gas flow direction and are in contact with each other.

The utility model discloses an ultrathin low-air-resistance massage supporting valve body which comprises an outer shell, a PCB fixed in the outer shell and a plurality of massage electromagnetic valves fixed on the PCB. The massage electromagnetic valve comprises an electromagnetic valve shell, a first connecting port, a second connecting port, a third connecting port and a fourth connecting port are formed in the electromagnetic valve shell, a first gas circuit and a second gas circuit are further arranged in the electromagnetic valve shell, the first connecting port is communicated with the second connecting port through the first gas circuit, and the third connecting port is communicated with the fourth connecting port through the second gas circuit. The first gas path and the second gas path are both arranged to be straight channels and are spliced in a straight-through mode, gas resistance is effectively reduced, the utilization rate of gas is improved, the flow loss is minimum in the using scene, the size is small, the space occupancy rate is reduced, the weight is light, and the cost is low. And the combined massage supporting valve body is thinner.

Degassing unit (10) for a housing (4), with a base body (1) which can be connected in a fluid-tight manner to an edge of a housing opening (44) of the housing (4), having an outer surface (18) and an inner surface (17), and which has at least one gas passage opening (15) which is closed with a membrane (6) stretched across a surface transverse to an axial direction (L), wherein the base body (1) is operatively connected to an actuator (2) which has an emergency degassing mandrel (19) extending in the axial direction (L) to the membrane (6) and whose tip (191) or at least a cutting edge (192) is arranged at a predetermined distance from a membrane surface (61, 62) in a rest state, wherein the emergency degassing mandrel (19) is movable towards the membrane when the actuator (2) is activated, so that the tip (191) or cutting edge (192) can pierce or cut the membrane (6), wherein the actuator (2) is arranged on the base body (1) or can be arranged on the housing (4), characterized in that a cover (5) is arranged on the outside (18) of the base body (1), which covers the gas passage opening (15) and which is connected to the base body (1) via a fastening mechanism, wherein the actuator (2) has an actuating element (21) which is designed to release the fastening mechanism.

The present application provides a mechanical two-way valve, an air pump and an electronic sphygmomanometer, wherein the mechanical two-way valve comprises a first shell, a second shell and an elastic member installed between the first shell and the second shell. An exhaust hole and a first vent hole are respectively provided on the first shell; an air inlet hole is provided on the second shell. The first vent hole is connected to the cuff by connecting the air outlet of the air pump with the air inlet hole of the mechanical two-way valve. When the air pump supplies air to the mechanical two-way valve, the elastic member deforms toward the exhaust hole under the atmospheric pressure of the air inlet hole, blocks the exhaust hole, and connects the air inlet hole with the first vent hole, so that the cuff can be inflated; when the air pump stops supplying air, the elastic member returns to its original state under the action of elastic force, blocks the air inlet hole, and connects the exhaust hole with the first vent hole, so that the gas in the cuff can be discharged. The electronic sphygmomanometer does not need to adopt the traditional solenoid-type electromagnetic valve structure, can realize mechanical air intake and exhaust, consumes less power, has a small size and a simple structure.

To provide an air valve capable of efficiently sucking / discharging air.SOLUTION: An air valve 1 includes: a valve case having a valve case hollow part 2a therein and a valve case flange part 22 around a portion near an upper side opening part of the valve case hollow part 2a; a lid body 3 that has a lid body hollow part 3a therein, has a lid body flange part 32 fastened to the valve case flange part 22 around a portion near a lower side opening part 3aa of the lid body hollow part 3a and has a lid body cap part 35 having a small air hole 35a formed thereon and in which the lower side opening part 3aa of the lid body hollow part 3a communicates with the valve case hollow part 2a; an upper side opening part of a large air hole 32b is formed on an upper surface of the lid body flange part 32; and the lower side opening part communicates with the valve case hollow part 2a; a loosely moving valve element 4 that is disposed in the valve case hollow part 2a and can close the large air hole 32b from the lower side and on which a central hole 4a penetrating vertically is formed; and a float valve element 5 that is disposed in the lid body hollow part 3a and can close the small air hole 35a from the lower side.SELECTED DRAWING: Figure 3

The utility model provides a quick inflation and deflation nozzle which comprises an inflation assembly, a non-return diaphragm, a ventilation piece, a sliding sleeve, a first sealing ring and a second sealing ring. The ventilation piece is provided with an upper cavity and a lower cavity, the upper cavity and the lower cavity are separated, an upper through hole is formed in the side wall of the upper cavity, a lower through hole is formed in the side wall of the lower cavity, the inflation assembly is provided with an inflation channel penetrating through the two ends of the inflation assembly, the inflation channel is communicated with the upper cavity, and the non-return diaphragm covers an air outlet port of the inflation channel and is located in the upper cavity; the sliding sleeve is arranged on the outer side of the ventilation piece in a sliding and sleeving mode, the first sealing ring and the second sealing ring are arranged on the upper portion and the lower portion of an inner cavity of the sliding sleeve respectively, air leakage of the air nozzle can be avoided, a ventilation cavity is formed between the first sealing ring and the second sealing ring, and the diameter of the ventilation cavity is larger than the outer diameter of the ventilation piece. The height of the ventilation cavity is larger than the distance from the upper end of the upper through hole to the lower end of the lower through hole, a user only needs to push the sliding sleeve during inflation and deflation, operation is more convenient, and the inflation and deflation efficiency can be improved.

The utility model belongs to the technical field of air circulation control, in particular to a push-pull air tap, which comprises an air tap, a colloid mounting ring, a connecting strap and a sealing cover, the colloid mounting ring is arranged on the periphery of the air tap, the connecting strap is arranged on the outer side of the air tap, and the sealing cover is arranged at the side end of the connecting strap. By arranging the displacement adjusting frame, the positioning frame, the sealing gasket, the flexible connecting strip and the push-pull block, when gas needs to be supplemented, the push-pull block is pulled out, and the flexible connecting strip drives the sealing gasket to be tightly attached to the bottom of the positioning frame. At the moment, inflation equipment is aligned with the air tap, and the air can lift the sealing gasket and enter the air containing structure. If gas needs to be exhausted, the push-pull block is pressed, the push-pull block enables the sleeve to penetrate through the through groove in the middle of the positioning frame through connection of the sleeve and the flexible connecting strip, so that the sealing gasket is pushed inwards and does not make contact with the bottom of the positioning frame, at the moment, the one-way through opening is changed into the two-way through opening, and the gas in the gas containing structure is rapidly exhausted from the gas nozzle.

The utility model belongs to the technical field of micro hyperbaric oxygen chambers, and particularly discloses a pressing type exhaust valve which solves the problem of manual exhaust of a civil micro hyperbaric oxygen chamber. The two-way exhaust device comprises an oxygen cabin body and an exhaust valve, a two-way exhaust assembly is arranged in the exhaust valve and comprises a valve seat, a button is arranged at the end, away from the valve seat, of the exhaust valve, a plurality of through holes are formed in one end of the exhaust valve and the button, and the button and the valve seat are used for driving the exhaust valve to conduct two-way exhaust. Through the arrangement of the two-way exhaust assembly, two-way exhaust can be rapidly achieved, the pressure in the oxygen cabin body can be adjusted in time, pressure balance is ensured, the exhaust efficiency is improved, the exhaust valve can be conveniently operated for exhaust no matter inside or outside the oxygen cabin body, complex tools are not needed, and the use convenience is improved; and accurate exhaust control is beneficial to maintaining a stable and safe pressure environment in the oxygen cabin main body, and the safety risk caused by abnormal pressure is reduced.

The utility model discloses a two-position five-way reversing valve for inflating a turning-over air bag of an air mattress. Comprising a reversing valve motor, a valve seat and a valve cover, a sealing piece is arranged between the valve cover and the valve seat, and the valve seat is provided with an air inlet pipe joint, an air leakage pipe joint, a pressure detection pipe joint, a left air supply pipe joint and a right air supply pipe joint; an air inlet channel, an air leakage channel, a left communication channel and a right communication channel are arranged in the valve seat. The bottom, connected with the valve seat, of the valve deck is provided with an air inlet groove communicating with the air inlet channel and the left air inlet hole at the same time and an air outlet groove communicating with the air leakage hole and the right air inlet hole at the same time. According to the two-position five-way reversing valve, the valve seat and the valve cover are arranged, the left air inlet hole, the right air inlet hole and the air release hole in the valve seat are matched with the air inlet groove and the air outlet groove in the valve cover to achieve two-to-two corresponding communication, and the left-in right-out and right-in left-out reversing air inlet and air release functions of the two-position five-way reversing valve are achieved; the turning-over air bag is simple in structure, convenient to operate and low in cost.