153results about "Aerating valves" patented technology

A valve connector includes a body having a first end adapted to attach to an American valve, a second end opposite the first end, and a through hole extending through both ends. A shoulder portion divides the through hole into a first accommodating portion and a second accommodating portion, with a sealing ring disposed on the second accommodating portion. A control member is movably disposed in relation to the body between a first and second position. The control member includes a body portion, a guiding hole, an abutting end, and a control end adapted to communicate with an air pump device. A venting portion is arranged between the abutting end and the control end, having a first cross-sectional area smaller than a second cross-sectional area.

Embodiments of air admittance valve assembly and piping system incorporating the same are provided herein. In some embodiments, a valve assembly comprising a housing, a first valve comprising a first valve sealing member and a first valve seat, and a second valve comprising a second valve sealing member and a second valve seat, and a pipe, an inlet, an outlet, a first zone, a second zone, a third zone, the first and second valve sealing member is closed by gravity and open based upon the pressure differential between the first zone, second zone and third zone.

The disclosed technology includes an air valve assembly for providing flexibility for a user when inflating an inflatable air mattress. The air valve assembly can include a base configured to attach to a portion of the inflatable air mattress, a middle valve configured to attach to the base portion and having a first diameter, a diaphragm member configured to attach to the middle valve, and a cap configured to removably couple to a portion of the air valve. The assembly can further include an adapter configured to detachably attach to the middle valve portion. The adapter can have a portion with a second diameter that is smaller than the first diameter such that when the adapter is attached, a user may use an inflation device with a smaller dimensioned output.

A pumphead comprises a housing having a first end defining an aperture configured to receive a valve head therein; a handle housing defining an air passage in fluid connection with the aperture and an air pump; and a lock arm comprising an end pivotally coupled to the pumphead housing at the end of the pumphead housing opposite the aperture; and a second end disposed between the handle housing and the first end of the pumphead housing. Pivoting the lock arm toward the handle housing locks the pumphead housing around the valve head when the valve head is received in the aperture.

In the field of agriculture and aerial firefighting, some example vent systems for aircraft fluid dispersion tanks include a combination of features that greatly minimizes the vent system's weight. Some examples of the vent system include a generally planar valve plug rigidly attached to a flexurally rigid but axially extendible strut. An upper end of the strut is suspended from a pivotal connector mounted centrally above the valve seat associated with the valve plug. As the vent closes, the pivotal connector ensures the valve plug can pivot into central alignment with the valve seat. In some examples, the valve plug includes a frusto-spherical outer perimeter to compensate for possible deviation in the connector's desired central alignment over the valve seat.

The present invention discloses a valve core with tire pressure indication and its assembly method, which includes a positioning sleeve. A core rod is inserted through the positioning sleeve, and a return spring is arranged between the positioning sleeve and the core rod. A seal is arranged on the core rod to block the positioning sleeve. A hollow channel is arranged inside the core rod, and a piston is arranged inside the hollow channel. A magnet is arranged on the piston. One end of the core rod close to the seal is provided with an elastic airbag communicated with the hollow channel, and the other end of the core rod is blocked by a plug head with screw fit. A movable ring is sleeved outside the core rod, and an iron block is arranged on the movable ring. A first conductive ring is arranged on the movable ring, and a second conductive ring and a third conductive ring are fixedly arranged outside the core rod. The movable ring is arranged between the second conductive ring and the third conductive ring, and a projection assembly is arranged outside the positioning sleeve. This valve core can project an indication projection on the wall or the ground when the tire pressure is too high or too low, and this assembly method can conveniently control the initial gas volume in the elastic airbag on the core rod.

An elongate diffuser (10) comprises a diffuser body (30), and a membrane (20) attached so that introduction of gas at a working pressure into the diffuser displaces part of the membrane (20) from contact with the diffuser body (10) providing an elongate sealed compartment (50) between the membrane (20) and a surface (32) of the diffuser body (30). The gas can pass from the compartment (50) through the membrane (20) for aeration of fluid in which the diffuser (10) is immersed. The diffuser body surface (32) which bounds the compartment (50) is recessed away from the membrane (20) in use, to contribute to the lateral cross sectional area of the compartment (50) and facilitate distribution of gas along the diffuser by the compartment (50). An automatic purge valve for purging water from a gas feed pipe of a diffuser is also disclosed.

The utility model relates to the technical field of telescopic ejector pins, in particular to a novel teat connecting rod of a detachable movable telescopic ejector pin, which comprises a connecting pipe, a limiting ring is arranged at one end of the connecting pipe, an inner groove is arranged in the limiting ring, and an inner thread is arranged on the inner wall surface of the front side end of the inner groove. An inner thread is arranged on the center body, a limiting ring is arranged on the center body, a nipple end is movably connected to one side of the limiting ring, an end threaded rod is installed on the nipple end and is in threaded connection with the inner thread, and a movable end is connected into the nipple end. According to the scheme, the possibility that the whole connecting rod needs to be replaced due to abrasion of a sealing face of the nipple end and damage of the center body is reduced; the complexity and time for replacing the nipple end and the ejector pin body are reduced, the effect that the device is convenient to disassemble is improved, parts which are easy to damage can be rapidly replaced, the working efficiency is greatly improved, the effect that the device saves more maintenance and replacement cost is improved, and the situation of waste is reduced.

The present invention relates to the technical field of hydrogen storage, and particularly relates to a gas valve for hydrogen storage, comprising: a valve body provided with a spool cavity, a valve seat cavity, and a first air passage. The spool cavity includes a first cavity section and a second cavity section, and the cross-section of the first cavity section is larger than that of the second cavity section. The valve body is provided with a second air passage communicating with the outside; a spool, which is arranged in the spool cavity, and the spool includes a valve block and a limiting end, and the spool is provided with a third air passage; a valve seat, which is in sealing cooperation with the valve seat cavity, and the valve seat is provided with a vent hole communicating the first air passage and the second cavity section, and the valve seat can move closer to or away from the spool in the valve seat cavity. A second elastic member is arranged between the valve seat and the valve body, and the second elastic member provides a force for the valve seat to move towards the spool; wherein, when the valve seat moves towards the spool to a set position, the valve block can abut against the valve seat to close the vent hole. The present invention effectively solves the existing problems by optimizing the installation structure of the spool and the valve seat.

The utility model discloses a high-vacuum negative-pressure valve which comprises a ventilation cylinder, a plurality of ventilation holes which are evenly distributed are formed in the ventilation cylinder, and first fixing plates are fixedly connected to the two sides of the ventilation cylinder. The sealing plates are arranged on the periphery of the ventilation cylinder, are attached to the ventilation cylinder and are used for covering the ventilation holes; the fixing devices are uniformly distributed on the fixing plate I and are used for fixing the sealing plate outside the air hole; the connecting cylinder is arranged below the ventilating cylinder, and the connecting cylinder and the ventilating cylinder are connected through a plurality of uniformly distributed connecting devices; the valve rod is arranged in the ventilation cylinder, the lower end of the valve rod is in threaded connection with a horn-shaped valve element, a valve plate matched with the valve element is arranged on the periphery of the valve element, and a valve port attached to the periphery of the valve element is formed in the middle of the valve plate. The inner wall is convenient to clean.

To provide a piping system capable of effectively suppressing contamination caused by drain water that splashes differently depending on the pipe shape.SOLUTION: A piping system 1 comprises a vertical pipe 2, a horizontal pipe 3, and an intake valve device 5 for adjusting pressure inside the pipes, wherein the intake valve device 5 is configured to include a first intake valve device 6 installed on the vertical pipe 2 and a second intake valve device 7 installed on the horizontal pipe 3, the first intake valve device 6 comprising a first ventilation member 50 for the vertical pipe, and the second intake valve device 7 comprising a second ventilation member 150 for the horizontal pipe, the second ventilation member 150 having a shape different from that of the first ventilation member 50.SELECTED DRAWING: Figure 1

The invention relates to a pressure compensation device, comprising a grid-shaped housing (1) with a gas passage opening (2) that connects an inner side (3) and an outer side (4) of the pressure compensation device in a flow-conducting manner depending on differential pressure in a flow direction (5), wherein the gas passage opening (2) is covered by an inner membrane (6) arranged towards the inner side and an outer membrane (7) arranged towards the outer side (4), wherein the inner membrane (6) and the outer membrane (7) are in each case gas-permeable and are arranged in a functional series circuit with respect to one another, and wherein the inner membrane (6) and the outer membrane (7) are arranged adjacent to one another at a spacing (8) as viewed in the flow direction (5) between the inner side (3) and the outer side (4). A gas-permeable first protective structure (14) is functionally connected upstream of the inner membrane (6) on the side facing the inner side (3) and / or a gas-permeable second protective structure (9) is arranged in the spacing (8).

The air filtering valve comprises an adjusting mechanism and a sealing mechanism arranged on the adjusting mechanism, the adjusting mechanism comprises a rotary button and a lower edge table fixedly connected to the lower end face of the rotary button, and the lower edge table is of a cavity structure with an opening in the upper end face and a hollow interior. The sealing mechanism comprises a base and a one-piece sealing upper cover arranged on the base, the two ends of the base are provided with openings, the interior of the base is hollow, an upper boss is fixed to the base, and the lower edge table is provided with a rotary knob air outlet hole penetrating into a cavity of the lower edge table, and the cavity of the lower edge table is filled with filtering cotton. And a base air outlet hole penetrating into the cavity of the base is formed in the base. The air filtering valve is simple in structure, and during air inflation, air is filtered by the filter cotton and then enters equipment to be inflated, so that dust, water vapor and microorganisms can be effectively filtered, the probability that external impurities such as dust enter the equipment to be inflated is reduced, and the service life is prolonged.

The present application provides an explosion-proof valve plugging device, and relates to the technical field of battery pack testing equipment. The explosion-proof valve plugging device comprises a sealing cover, a magnetic member and a first driving member. The sealing cover is configured to cover an end of an explosion-proof valve that is provided with a valve cover. The magnetic member is arranged in the sealing cover, and the magnetic member is configured to attract the valve cover. The first driving member is in transmission connection with the magnetic member, and is configured to drive the magnetic member to move relative to the sealing cover, such that the magnetic member comes into contact with the valve cover and drives the valve cover to be opened. After the explosion-proof valve plugging device plugs the explosion-proof valve, the first driving member first drives the magnetic member to come into contact with and attract the valve cover, and then drives the magnetic member to drive the valve cover to be opened. As a result, the magnetic member has a certain travel, so that a height to which the valve cover is pulled up is enough, reducing the risk of low efficiency of inflation of a battery pack by means of the explosion-proof valve plugging device due to a small inflation flow rate.

A hose coupling for a hydrant has a ventilation device. The ventilation device has a non-return valve that is received in a receptacle incorporated into an outer flange of the hose coupling.

The present invention provides an automatic water replacement assembly and a self-cleaning maintenance station. The automatic water replacement assembly comprises: a control apparatus and a water tank assembly. The control apparatus is provided inside the water tank assembly and configured to implement automatic injection of clear water into the water tank assembly. The water tank assembly comprises: a clear water tank body; a water inlet pipe configured to inject clear water into the clear water tank body; and a float valve provided in the clear water tank body and configured to vertically move as the height of the water surface in the clear water tank body changes. In response to the float valve located at a first position, the control apparatus controls the water inlet pipe to stop injecting clear water into the clear water tank body; in response to the float valve located at a second position, the float valve blocks an outlet of the water inlet pipe for water injection to the clear water tank body.

The utility model discloses an air inlet valve structure of an air gun, which relates to the field of air inlet valves of air guns and comprises a differential pressure pipe, internal threads are arranged at the rear end of the inner side face of the differential pressure pipe, the rear end of the differential pressure pipe is matched with the internal threads and connected with a separation pipe, a connecting pipe is fixedly connected to the rear end of the separation pipe, external threads are arranged on the side face of the connecting pipe, and internal threads are arranged on the inner wall and the outer wall of the differential pressure pipe. The front end of the differential pressure pipe is connected with a stud in a screwed mode, a fixed valve element is arranged in the front end of the differential pressure pipe, and a movable valve element is fixedly connected to the rear end of the differential pressure pipe. Through the cooperation of the fixed valve core and the movable valve core, the gas inlet and outlet can be conveniently controlled, the practicability is improved, the gas gun shooting gas discharging capacity is achieved, through the cooperation of the differential pressure pipe and the separation pipe, the abraded valve core can be conveniently replaced, the practicability is improved, and the capacity of maintaining the airtightness of the gas inlet valve by replacing the valve core is achieved; finally, the problem that air tightness is reduced due to abrasion caused by long-time use is solved.

To provide a piping system capable of effectively suppressing contamination caused by drain water that splashes differently depending on the pipe shape.SOLUTION: A piping system 1 comprises a vertical pipe 2, a horizontal pipe 3, and an intake valve device 5 for adjusting pressure inside the pipes, wherein the intake valve device 5 is configured to include a first intake valve device 6 installed on the vertical pipe 2 and a second intake valve device 7 installed on the horizontal pipe 3, the first intake valve device 6 comprising a first ventilation member 50 for the vertical pipe, and the second intake valve device 7 comprising a second ventilation member 150 for the horizontal pipe, the second ventilation member 150 having a shape different from that of the first ventilation member 50.SELECTED DRAWING: Figure 1

The present invention relates to a flood valve (10) for opening and closing a flood port in the housing of a vacuum pump. The flood valve (10) comprises a valve housing (12) for receiving in a flood port of a vacuum pump and a valve element (14) received by the valve housing (12). The valve housing (12) is penetrated by a through-bore (16) extending from a first axial end face (17) to a second axial end face (18) of the valve housing (12) and having an internal thread (20). The valve element (14) has a screw shank (22) with an external thread (24) by which the valve element (14) is screwed into the internal thread (20) of the through-bore (16).The screw shaft (22) has at a first end (25) a rotary drive (28) for actuating the valve element (14) to change the axial position of the valve element (14) relative to the valve housing (12) and at an opposite second end (26) a valve disc (30) which, in a first axial position of the valve element (14), rests against the second end face (18) of the valve housing (12) to seal the through-bore (16) and, in a second axial position of the valve element (14), has a distance relative to the second end face (18).

The disclosed technology includes an air valve assembly for providing flexibility for a user when inflating an inflatable air mattress. The air valve assembly can include a base configured to attach to a portion of the inflatable air mattress, a middle valve configured to attach to the base portion and having a first diameter, a diaphragm member configured to attach to the middle valve, and a cap configured to removably couple to a portion of the air valve. The assembly can further include an adapter configured to detachably attach to the middle valve portion. The adapter can have a portion with a second diameter that is smaller than the first diameter such that when the adapter is attached, a user may use an inflation device with a smaller dimensioned output.

The utility model provides a valve body structure of a special valve, and relates to the field of valves. Comprising a bottom box, a detection device is arranged in the bottom box, the detection device comprises a supporting plate fixedly connected with one side of the bottom box, the upper surface of the supporting plate is fixedly connected with the lower surface of an inflator pump, and an air outlet of the inflator pump is fixedly communicated with an inlet of a first connecting pipe. According to the valve body structure of the special valve, the supporting plate, the inflator pump, the first connecting pipe, the sliding groove and the one-way valve are used in cooperation, and the special valve can be placed in the bottom box to be detected. When the special valve body is detected, the special valve is placed in the bottom box through the lifting fixing device, the first conveying pipe slides into the sliding groove and is aligned with the first connecting pipe, the special valve body is inflated through the inflation pump, and whether the special valve leaks or not is judged according to whether water in the bottom box generates bubbles or not. Water can be controlled not to enter the inflator pump through the one-way valve, and the function of detecting leakage of the special valve before use is achieved.

In the field of agriculture and aerial firefighting, some example vent systems for aircraft fluid dispersion tanks include a combination of features that greatly minimizes the vent system's weight. Some examples of the vent system include a generally planar valve plug rigidly attached to a flexurally rigid but axially extendible strut. An upper end of the strut is suspended from a pivotal connector mounted centrally above the valve seat associated with the valve plug. As the vent closes, the pivotal connector ensures the valve plug can pivot into central alignment with the valve seat. In some examples, the valve plug includes a frusto-spherical outer perimeter to compensate for possible deviation in the connector's desired central alignment over the valve seat.

The utility model relates to an inflatable tent which comprises a plurality of inflatable parts and a connecting valve device. The end part of the connecting valve device is provided with a functional integrated part, and the functional integrated part can integrate two functional components (such as a fixing element and an unlocking part) used for fixing a pipeline on the inflatable part and unlocking the pipeline at the end part of the connecting valve device. According to the invention, it is possible to conveniently / quickly insert the pipe into the connecting valve device and fix the pipe directly with respect to the connecting valve device by the fixing element after insertion and to release the fixation of the pipe by simply pushing the movement of the unlocking member, thereby allowing the inflatable part of the inflatable tent to be conveniently and quickly assembled and / or replaced, that is, a solution for quick insertion and extraction of the pipeline is provided.

The utility model belongs to the technical field of fluid control sealing, and particularly relates to a threaded cap overturning air valve which comprises a fluid controlled port, a circular connecting belt, an adhesive tape and a skirt edge, the circular connecting belt is arranged on the periphery of the fluid controlled port, the adhesive tape is arranged at the side end of the fluid controlled port, and the skirt edge is arranged on the outer side of the fluid controlled port. Through the arrangement of the overturning control valve, the anti-blocking isolating ring, the mounting frame, the one-way sealing plug, the blocking strip, the connecting ring and the clamping block, when air inflation is needed, the sealing cover is opened, the overturning control valve is rotated until the side, provided with the strip-shaped protrusion, of the middle of the one-way sealing plug faces outwards, then the overturning control valve is clamped to a fluid controlled port through rotation, and then the sealing cover is opened; and then the air tap is clamped on the outer side of the turnover control valve in the same way for inflating. If the applicable material is sponge or other structures which cannot automatically exhaust, the sealing cover is opened, then the turnover control valve is rotated to the other surface, and at the moment, the air tap is mounted to the side end of the turnover control valve, so that air can be exhausted inwards.

Automated pipetting systems and methods are disclosed for aspirating and dispensing fluids, particularly biological samples. In one aspect, a liquid dispenser includes a manifold and one or more pipette channels. The manifold includes a vacuum channel, a pressure channel, and a plurality of lanes. Each lane includes an electrical connector, a port to the pressure channel, and a port to the vacuum channel. The pipette channels can be modular. Each pipette channel includes a single dispense head and can be selectively and independently coupled to any one lane of the plurality of lanes. In some aspects, a valve in the pipette channel is in simultaneous fluid communication with a pressure port and a vacuum port of the manifold. The valve selectively diverts gas under pressure and gas under vacuum to the dispense head in response to control signals received through the electrical connector of the manifold.