54results about "Lift valve" patented technology

A fuel injector comprising a hollow body for housing a metering valve with a calibrated pipe for outlet of the fuel from a control chamber. The calibrated pipe is normally kept closed by a shutter controlled by an electromagnet comprising a magnetic core and an electric coil housed in an annular slot of the core. The coil outer cylindrical surface forms a gap with the annular slot so as to be lapped by the fuel coming out of the calibrated pipe. The coil comprises a bobbin having a pair of appendages for supporting electric supply plugs, which are englobed at least in part in a block of non-magnetic material. The bobbin has a substantially cylindrical rib, one flange adjacent to an end portion of the plugs, and another flange having a smaller diameter that forms a passage for the fuel between the calibrated pipe and the gap.

A food and beverage industry membrane valve structure with a membrane which separates a control compartment from a product compartment in a food or beverage handling or processing machine. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. §1.72(b). As stated in 37 C.F.R. §1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading “Abstract of the Disclosure.” The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.

A measurement-while-drilling servo-actuator for use in mud-pulse telemetry, which determines linear position of a poppet valve therein without counting revolutions of a stepper motor which positions said poppet valve. A sensor senses a magnetic field intensity value, or an inductance value, which is proportional to the position of the poppet valve relative to the sensor. A look-up table of reference outputs corresponding to known position of the poppet valve is used to determine the position of the poppet valve. A method of determining a position of a poppet valve in a mud pulser is further disclosed.

In a double seat valve with upper and lower valve discs and a flow divider in a leakage room, wherein respectively one valve disc can be set to a lift position to supplying a cleaning medium flow into the leakage room, and first channels are provided in the flow divider and second channels in the lower valve disc towards a leakage outlet, the first channels are disposed in extensions of the flow divider that axially bridge the lower leakage room part and that join within the second channels the flow divider forming in at least one of two lift positions with its external circumference with the external wall of the leakage room a leakage gap for a side flow that is significantly smaller than a main flow that is deflected and directed by the flow divider into the first channels or into the second channels and to the leakage outlet.

The present flow rate safety valve comprises a valve body, a valve seat, a valve core and a spring. The valve core is an open cylinder. A sealing washer is set up on the front end of the valve core. Part of the rim of the sealing washer contacts the inner wall of the valve body, forming a seal and guiding the valve core in the axial direction of the valve body. A projecting sealing part is arranged on the valve seat, and the inner wall at the rear end of the valve core is a conical surface which extends from the rear end face to the middle part of the valve core and forms a guide for the conical sealing part. Inside an outflow pipe of the valve body, a backflow preventer is arranged in order to prevent the medium backflow.

The invention relates to a thermal expansion valve, belonging to the technical field of refrigeration control. The thermal expansion valve comprises an upper valve body, a lower valve body, a transmission rod and a valve core, wherein the upper valve body is provided with a first cavity, a second cavity and a pair of air return pipes; the lower valve is fixedly connected with the upper valve bodyand is provided with a pair of throttling pipes; the displacement of the transmission rod varies due to the influence of the temperature/pressure of a temperature sensing component; the valve core isarranged in the first cavity, and the displacement of the transmission rod controls the movement of the valve core so as to control the opening degree of a throttle port. The thermal expansion valve is characterized in that the directions of a refrigerant flowing across the throttle port are the same when the thermal expansion valve is in a forward throttling state and a backward throttling state. The invention overcomes the difference between forward throttling and backward throttling in the prior art, and can simultaneously prevent the refrigerant from generating nonuniform impact on the transmission rod during the throttling process, thus, the thermal expansion valve not only can increase the movement reliability of the transmission rod, but also can obviously reduce noise.

The invention provides a vacuum chamber negative pressure adjusting device and a method for using the same. The vacuum chamber negative pressure adjusting device comprises a valve, a tapered plug, a spring and a sealing slide rod, wherein the tapered plug is arranged in an inner cavity of the valve, and the sealing slide rod is movably connected to the lower end of the valve. The top of the innercavity of the valve is matched with a tapered face of the tapered plug, a hole slot running through the top of the inner cavity of the valve is arranged at the upper end of the valve, a through hole communicated with the inner cavity of the valve is arranged at the lower end of the valve, one end of the sealing slide rod penetrates through the through hole, enters the inner cavity of the valve and is connected with the tapered plug through the spring, a communicated channel is formed among the through hole, the inner cavity and the hole slot, and the sealing slide rod vertically moves in the inner cavity of the valve so that gas flows in the channel. The vacuum chamber negative pressure adjusting device is reliable in structural sealing and simple and easy in machining, is mounted on a vacuum chamber to be used, can reach negative pressure needed by the vacuum chamber by pushing and pulling the sealing slide rod to move in the inner cavity of the valve according to the requirement of the vacuum chamber on negative pressure, and can meet the technical requirements for stable soaking liquid level in the vacuum chamber, adjustable soaking liquid level, explosion prevention and the like.

A sleeve valve including a permanent end position and comprising an inner sleeve concentrically disposed within an outer sleeve comprising at least one radially facing outer opening and an operating range defined by an open position in which the inner sleeve does not block the outer opening, and a closed position in which the inner sleeve blocks the outer opening. The inner sleeve is axially displaceable or rotatable within the outer sleeve to provide an operating range in the longitudinal direction or an operating range in the form of an angle. At least one plastically deformable locking area of one the inner or outer sleeve is adapted for being radially deformed into a locking groove of the other sleeve when the inner sleeve is moved outside of the operating range.

The invention discloses an upper mounting type butterfly valve. The upper mounting type butterfly valve comprises a valve body, a valve cover arranged on the top of the valve body, a valve rod tightly inserted on the valve cover and with the bottom extending into a valve body mounting groove, a butterfly plate fixed on the bottom of the valve rod, a sealing valve base arranged on an inlet of the valve body, and a limiting component coating the valve rod and used for enabling the valve rod to only perform a rotating motion in the horizontal direction. When all parts of the butterfly valve are mounted, the valve rod and the component of the butterfly plate are only required to be inserted in a cavity of the valve body, the limiting component coats the valve rod, and the valve rod is fixed on the top of the valve body; when the butterfly valve is used and installed with other equipment, a reserved space has no need to be formed below the mounting position of the butterfly valve, and the installation is directly performed; and when the butterfly valve is required to be disassembled and maintained, the disassembly procedure and the installation procedure are opposite, so that the installation and maintenance procedures of the butterfly valve are simplified, and the working efficiency is improved. Meanwhile, the limiting component enables the sealing performance between the valve rod and the butterfly plate to become better; and the service life of the butterfly valve is prolonged.

The invention relates to a sealing device and method of mounting the same. A sealing device (10) which seals, by means of a PTFE seal lip (13), the outer periphery of a valve shaft of a butterfly valve used for an EGR system of a vehicle. The sealing device (10) is provided with mounting rings (11, 12) press-fitted in and fixed to a valve shaft insertion hole (102), and also with the seal lip (13) held by the mounting rings (11, 12) and made to be in slidable contact with the outer peripheral surface of the valve shaft. The seal lip (13) is formed in a circular disc shape using a fluororesin, and an inner diameter section (13b) of the seal lip (13) is forcibly deformed by the valve shaft so as to face the flow path (101) side.

The invention discloses a low pressure drop check valve. The low pressure drop check valve comprises a tubular valve body and a valve clack. A lug is arranged on one end of the upper surface of the valve clack; the lug is connected to a bracket rod arranged on the upper wall of an inner cavity of the valve body through a horizontally arranged pin roll; the axis of the pin roll is vertical to a vertical plane of the axis of the valve body; a valve clack seat is arranged in the inner cavity of the valve body; the outer edge of the valve clack seat is hermetically connected to the wall of the inner cavity of the valve body in a surrounding manner; a through hole is formed in the middle of the valve clack seat; the valve clack rotates around the pin roll to hermetically close or open the through hole; the plane of the valve clack seat inclines to the horizontal plane of the axis of the valve body and is vertical to the vertical plane of the axis of the valve body; and the valve clack seat inclines toward the inlet end of the valve body. Compared with the prior art, the low pressure drop check valve disclosed by the invention has the advantages of simple and compact structure and good sealing property, and can be quickly opened when the front and back pressure difference of the valve is smaller.

The invention discloses an automatic water-saving faucet, which comprises a faucet shell, a ceramic valve core water control valve, a water control valve handle, a faucet water inlet and a faucet water outlet; a main water-saving valve water outlet is formed in the internal partition of a faucet spout; a secondary water-saving valve water outlet is formed in the bottom of the internal wall of a piston shaped baffle cover of the main water-saving valve water outlet; when a user uses two hands to catch water under the faucet water outlet for washing the face, a water-saving valve button is pointed by a finger, and the secondary water-saving valve water outlet is firstly opened, the pressure on the piston shaped main water-saving valve water outlet baffle cover disappears, thus, the main water-saving valve water outlet can be opened easily, and water flows out from the faucet water outlet; and when the finger leaves the water-saving valve button, the secondary water-saving valve water outlet and the main water-saving valve water outlet are closed, the faucet water outlet stops water. According to the automatic water-saving faucet provided by the invention, the smart and simple structure of the faucet is adopted to reach the purposes of convenience and water saving.

The invention discloses a switch assembly for a synthetic fluid fuel cooker, which comprises a knob and a valve body. The switch assembly for the synthetic fluid fuel cooker has the key points that a preheating valve core cavity, a fuel gas valve core cavity and a fuel valve core cavity which are not communicated with one another are arranged inside the valve body side by side; the preheating valve core cavity is communicated with a preheating inlet and a preheating outlet, and a preheating valve core is arranged inside the preheating valve core cavity; the fuel gas valve core cavity is communicated with a fuel gas inlet and a fuel gas outlet, and a fuel gas valve core is arranged inside the fuel gas valve core cavity; the fuel valve core cavity is communicated with a fuel inlet and a fuel outlet, and a fuel valve core is arranged inside the fuel valve core cavity; a seal ring, a spring and a preheating valve core cap are arranged on the upper part of the preheating valve core; a seal ring, a spring and a fuel valve core cap are arranged on the upper part of the fuel valve core; a fuel pressure plate is fixed on the fuel gas valve core which is movably connected with preheating materials, an ignition pressure plate and the knob; and the middle of the fuel gas valve core is provided with external threads which are matched with internal threads in the fuel gas valve core cavity. The switch assembly for the synthetic fluid fuel cooker has a skillful and flexible structure, integrates preheating, feeding, ignition and gas supply, successfully realizes one-valve control of the synthetic fluid fuel cooker, is safe and reliable, and has low production cost and high promotion value.

The invention discloses a shifting fork type butterfly valve driver. The shifting fork type butterfly valve driver comprises a hand wheel, a first screw rod, a flange cavity, a vertical rod cavity and a second screw rod. A flange is arranged in the flange cavity. The hand wheel is arranged at the top end of the first screw rod. The hand wheel and the flange cavity are connected through the first screw rod. The second screw rod is connected with the first screw rod through the flange in the flange cavity. The second screw rod extends to the vertical rod cavity and arrives at the bottom of the vertical rod cavity. A drive operation cavity is formed in the middle of the vertical rod cavity. A movable shifting fork is arranged in the drive operation cavity. A sharp-nozzle-shaped opening groove is formed in the front end of the movable shifting fork. A clamping hole is formed in the end of a non-sharp-nozzle-type opening groove of the movable shifting fork and is formed by forming a rectangular groove in a certain position in a circular hole. The shifting fork type butterfly valve driver overcomes the defect that large hydraulic drive devices need to be arranged, drive of a butterfly valve is achieved through a physical drive manner, and the use cost of the butterfly valve driver is greatly reduced for production lines where multiple butterfly valve drivers are needed.

A re-closable valve (1, 100, 700, 800) for use in sterile fluid transfer has a body (5) with open entry and exit sides (2, 3) and a passageway (4) for fluid therebetween. The entry side is connectable to an opening of a separate vessel and the exit side is connectable to downstream processing. The entry side includes a first rupturable seal (5b, 500) blocking the opening of the entry side. A piston (9) is connected to an actuator (7) via a cam mechanism (8, 85, 10) which moves the piston (9) axially in the passageway (4) and to the first seal (5b, 500). On movement of the piston (9) during a first actuation, the first seal (5b, 500) is torn free from the entry side to open the valve for fluid transfer. A sharp rim (15) surrounds the opening of the entry side and a curved surface area (193) encircles the piston exterior proximal the entry side. The valve (1, 100, 700, 800) can be re-closed by moving the piston (9) during a subsequent actuation thus engaging the sharp rim (15) with the curved surface area (193) which plastically deform to from a second seal. Arrangements are included to enable the valve (1, 100, 700, 800) to be multiply re-opened and re-closed, if desired.

The invention provides a shuttle valve. The shuttle valve comprises a valve bush and a valve element movably arranged in the valve bush. A first frustum is arranged at the first end of the valve element, a first conical base used in cooperation with the first frustum is arranged in the valve bush, and the first frustum and the first conical base are in conical surface contact. An opening A and an opening B are at least formed in the valve bush, when oil flows in the opening A, the first frustum at one end of the valve element and the first conical base are in surface contact, and conical surface seal is formed. According to the shuttle valve of the structure, one end or the two ends of the valve element are arranged to be of a frustum structure, cooperation between the valve element and the valve bush is changed into conical surface cooperation from point cooperation and linear cooperation, the sealing effect and the sealing performance of the shuttle valve are greatly improved, the sealing stability is better, it can be achieved that no leakage is generated during work, or the leakage amount is extremely small, and the requirement that the leakage speed is within 5 drops per Min is met. In addition, the invention provides a hydraulic system comprising the shuttle valve and mechanical equipment.

The invention provides a pressure reducing valve and a temperature-reducing and pressure-reducing device. The pressure reducing valve comprises a valve body, valve seats, a valve flap and a valve rod and also comprises a guide cover, wherein the valve seats are fixedly connected with the valve body; the valve flap moves in the valve seat to change the flow areas of the valve seats; the valve rod is connected with the valve flap; the guide cover is sheathed on the valve flap; the two ends of the guide cover abut against the inner wall of the valve body; the guide cover is provided with a flow guiding hole, and is sheathed on the valve flap; the two ends of the guide cover abut against the inner wall of the valve body respectively; and the actuating mechanism drives the valve rod connected with the actuating mechanism to move and further drive the valve flap to move in the valve seats and the guide cover. The invention has the advantages that the radial movement of the valve flap is effectively limited by adopting a mode that the guide cover is sheathed on the valve flap, the valve flap finishes the axial movement better, and the unnecessary radial movement of the valve flap is limited, so that the vibration of the valve flap is reduced, and further the noise is reduced to enable the working environment to be quiet; and steam flowing out of the valve seats flows out of the flow guiding hole arranged in a guide sleeve, is guided out of the flow guiding hole, and is also throttled simultaneously, so that the action of secondary pressure reduction is achieved.

The invention discloses a capsule type water quantity adjusting device with a discharge door device with a large opening degree. The capsule type water quantity adjusting device comprises a sleeve, two support frames, a balloon, a conveying passage body, a feeding unit, a water supply unit, a discharge door device, a material pumping mechanism and a two-position one-way switching ball valve, wherein the sleeve is internally provided with the front and rear support frames, and the balloon is arranged in the middle of the front side face of the rear support frame; the discharge door device of which the front end communicates with the balloon is arranged on the rear support frame; the conveying passage body communicating with the output end of the discharge door device is arranged on the lower wall body of the sleeve; a conveying passage is arranged on the rear support frame, one end of the conveying passage communicates with the balloon, and the other end of the conveying passage penetrates through the upper end surface of the rear support frame; and the output end of the two-position one-way switching ball valve penetrates through the upper wall body of the sleeve and communicates with the upper end of the conveying passage. Compared with the prior art, the capsule type water quantity adjusting device is small in adjustment abrasion, the sealing is high, reliability and durability are achieved, processing is carried out by adopting a part of natural materials, and the discharge door device is reliable in sealing, and has large opening degree and long service life.

The invention discloses a check valve allowing external adjustment of closing positions of a valve plate. The check valve allowing external adjustment of the closing positions of the valve plate comprises a valve body, the valve plate and a valve plate limitation rod; the internal wall of the valve body is provided with an upper protruding sealing surface and a lower protruding sealing surface; the upper protruding sealing surface, the lower protruding sealing surface and the sealing surface of the valve plate are closed; designing the calve body wall at the position of the lower protruding sealing surface to be externally concave and convex; a threaded hole which is used for installing the valve plate limitation rod is formed at the bottom of a groove; the sealing surface end of the valve plate limitation rod is provided with an inclined surface with small top and large bottom; the other end of the valve plate limitation rod is provided with a connecting rod which is provided with threads and fastened on the external of the valve body through a lock nut. An O-shaped sealing ring is arranged on a valve plate limitation rod portion which is arranged inside the groove. The check valve allowing external adjustment of the closing positions of the valve plate has the advantage of enabling the closing positions of the valve plate to be adjusted outside the valve through a limitation device due to the fact that the limitation device is arranged on the valve body, enabling the valve to be reliably sealed when the valve is abraded after long time utilization due to adjustment outside the valve and enabling troubles of disassembling the valve from channels and reinstalling to be avoided.

The invention discloses a waste water valve, and a reverse osmosis water purifier. The waste water valve comprises a water inlet end and two water outlet ends; the water inlet end is connected with awaste water outlet end of the reverse osmosis water purifier; one of the water outlet ends is connected with a raw water inlet end of the reverse osmosis water purifier; and the other water outlet endis designed to be unoccupied. The structure of the reverse osmosis water purifier is simplified, installation is convenient, and space utilization rate is high.

The invention provides an eccentric two-way sealing butterfly valve. The valve seat of the butterfly valve consists of an independent floating valve seat and O-shaped seal rings on the floating valve seat to form a new sealing pair, wherein the side face and the bottom of the valve seat are provided with plastic or rubber O-shaped seal rings. The eccentric two-way sealing butterfly valve has the advantages that the valve can bear pressure (within 1.25 times the nominal pressure) which is applied by a medium from any side; and the aim of preventing the medium from reflowing can be fulfilled by arranging one eccentric two-way pressure butterfly valve on a pipeline and not arranging a check valve or other two-way pressure valves.

The invention relates to a water dispenser for a jail. The water dispenser comprises a water supply source and water output devices. Each water output device comprises a water receiving box, a valve body assembly and an on-off device. Each water receiving box is provided with a panel, and a first through hole is formed in each panel. Each valve body assembly is provided with an abutting table andis provided with a water inlet and a water outlet. The valve body assemblies are fixed in the axial direction. The water inlet and the water outlet of each valve body assembly are located on the otherside of the corresponding panel, and the water inlets communicate with the water supply source. Each on-off device comprises a button, in a normal state, the on-off devices stop communication of thewater inlets and the water outlets, the buttons are pressed, and the on-off devices allow communication of the water inlets and the water outlets. The water outlet extend into the water receiving boxes through pipelines. The water dispenser has the advantages that due to the fact that only the abutting tables and the buttons face water holders, the valve body assemblies are axially fixed on the face back on to the water holders, and the abutting tables and the buttons on the side facing the water holders are rotary bodies, the valve body assemblies cannot be demounted down, and the consequencethat the water holder demount down the water output structures is avoided.

The invention is a volume control valve for controlling and metering a fluid in a motor vehicle, comprising a tappet with an actuating end and a free end, said tappet being received in a bearing bush and mounted along its actuating axis so as to be movable back and forth, and a seat valve which is connected to a fluid channel and arranged relative to the tappet in such a way that the free end of the tappet can engage in the valve seat and close the fluid channel when it is engaged in said valve seat, and further comprising a pressure spring which is arranged along the longitudinal axis of the tappet. According to the invention, a welded plate is fastened and/or welded and/or formed on the tappet with the pressure spring arranged thereon, which is supported on the welded plate and the bearing bush.