31results about How to "Reduced opening torque" patented technology

The package of the present invention is a package comprising a metal container having a mouth and a metal container cap with a liner mounted on the mouth, the liner (17) of the container cap has an outer shell descending downward from the peripheral end. The ring (20) and the inner ring (21) descending downward inside the outer ring (20), the inner surface of the outer ring (20) is a surface extending straight in the vertical direction, and in the state of being inserted into the opening end of the mouth of the container, While pressing the container cap from above, the corners transitioning from the top wall to the side edges are extruded so that the inner surface of the outer ring is in close contact with the outer surface of the side wall portion formed on the open end of the container mouth , and an inward protruding part is formed on the lower end of the inner surface of the outer ring, and the inner protruding part is close to the outer part of the lower curling part of the mouth of the container. While effectively preventing seal damage before the connecting pieces connected to the anti-theft ring are broken, this package also has excellent reclosing performance.

The invention discloses a valve. The valve comprises a valve body, a valve rod, a valve base and a valve core assembly; the valve core assembly is mounted in the valve body and comprises a valve core, the valve core is hinged to the valve body, and the valve core assembly further comprises a drive part, a positioning part and an elastic part; and the positioning part of the valve core assembly is mounted in the valve element in a relatively-moving manner, the elastic part is mounted between the positioning part and the valve element, and due to the engaging and disengaging matching relation between the riving part and the positioning part, the valve has three transmission relations in the closing process. The three transmission relations include the first transmission relation, the second transmission relation and the third transmission relation. According to the first transmission relation, the driving part and the positioning part are matched to form relative rest; according to the second transmission relation, the driving part extrudes the positioning part to enable the positioning part to do relative motion relative to the valve element; and according to the third transmission relation, the second transmission relation of the driving part and the positioning part is switched into the third transmission relation of the driving part and the valve element. The valve has the beneficial effects of being few in part, good in manufacturing technology, simple in structure, high in space utilization rate and the like.

The invention discloses a double-wedge type double-ball-clack valve. A sphere of the double-wedge type double-ball-clack valve is enabled to open and close through a method of exerting external force without rotation, and partial stress, friction and abrasion are avoided and reduced. The double-wedge type double-ball-clack valve comprises a valve body, a valve seat, a support of the valve body, the sphere and a valve rod, wherein the valve seat is arranged in a flow passage in the valve body, the sphere corresponds to the valve seat and is arranged in the valve body, and the valve rod is connected with the sphere. The valve rod penetrates through gland packing of the valve body. A threaded rod at the upper end of the valve body is matched with a hand wheel nut on the support of the valve body. An L-shaped guide groove is formed in the side face of the valve rod. The support of the valve body is provided with a guide pin in a fixed mode, wherein the end portion of the guide pin is inserted into the guide groove. The double-wedge type double-ball-clack valve is characterized in that the sphere is composed of a left ball clack and a right ball clack, an upper portion between the two ball clacks is open upper taper space, a lower portion between the two ball clacks is open lower taper space, an upper wedge sphere is arranged in the upper taper space, a lower wedge sphere is arranged in the lower taper space, the upper wedge sphere corresponds to the lower wedge sphere, the upper end of the upper wedge sphere is fixedly connected with the lower end of the valve body, the lower end of the lower wedge sphere is connected with the valve body, an extending pin is arranged at the upper end of the upper wedge sphere or the lower end of the valve rod, and two ends of the extending pin are respectively arranged in horizontal grooves which are reserved at two upper ends of the two ball clacks.

The invention discloses a butterfly valve. The butterfly valve comprises a valve body, an inner valve seat, a valve core, a valve rod and at least one positioning ring. The valve body has an inlet endand an outlet end and an axial passage communicating the inlet end and the outlet end. The valve body is provided with a valve rod mounting hole along the radial direction, between the inlet end andthe outlet end. And a valve seat mounting part is arranged in the valve body, at a position corresponding to the valve rod mounting hole. The inner valve seat is fixedly arranged on the valve seat mounting part and is a cylindrical piece, and the side wall of the inner valve seat is provided with a radial through hole corresponding to the valve rod mounting hole. The valve core is a plate-shaped element and is installed in the inner valve seat, wherein a through hole in the radial direction is formed in the plate-shaped element. The valve rod sequentially passes through the valve rod mountinghole, the through hole of the inner valve seat and the through hole of the valve core; the positioning ring is arranged in the valve body, on the axial side surface of the inner valve seat and forms asealing connection with the inner valve seat. The butterfly valve has good sealing performance.

The invention discloses a profile door lock handle assembly and aims to provide a profile door lock handle assembly with simple structure, low installation requirements, convenient use, small opening torque, high safety performance and long service life. The profile door lock handle assembly includes a handle body, a square bolt connected to the handle body, and a fixing seat sleeved on the handle body, and the fixing seat is rotatably matched with the handle body through a bearing device. The bearing device includes sliding bearings and ball bearings arranged sequentially from the inside to the outside, the sliding bearings are sleeved on the handle body, the inner ring of the ball bearings is sleeved on the sliding bearings and connected to the Compatible with sliding bearings. The invention can be widely used in the field of profile doors.

The invention discloses a pilot-operated type hard seal fixing ball valve which comprises a valve body, a ball body, a valve seat, a valve cover, a valve rod, a press cover, a filling press cover and a supporting shaft, wherein the ball body is arranged in the valve body; the valve rod passes through the upper part of the valve body and is connected with the ball body, and the valve rod is externally sleeved with the press cover and the filling press cover which are vertically arranged; the valve seat is arranged between the valve cover and the ball body; the supporting shaft passes through the lower part of the valve body and is connected with the ball body; two valve cover sealing rings and a valve seat spring are arranged between the valve cover and the valve seat; the valve cover, thevalve seat and two valve seat sealing rings form a pressure difference cavity; the left side of the valve cover is provided with two left by-pass pipes, the right side is provided with two right by-pass pipes, and the left by-pass pipes and the right by-pass pipes are connected by control valves; the valve rod is also sleeved with a three-way handle head which is communicated with the control valves; and a handle steel pipe is arranged on the valve rod. The invention realizes that the valve seat can be automatically separated from a ball surface when the valve is turned on so as to greatly prolong the service life of the hard seal fixing ball valve and greatly reduce the turn-on torque of the valve.

An integral top-mounted ultra-high pressure ultra-low temperature hard-sealed ball valve, the ball valve is mainly composed of a valve body (1), a valve cover (24), a handle ball (3), a valve seat (13), a rear valve seat (10) and a valve Rod bearing seat (16) etc. are formed. Placed inside the valve body (1) and passing through the handle ball (3) at the center of the valve cover (24), the handle ball (3) is rotated 90 degrees by external force to realize the opening and closing of the pipeline. The sealing is to hold the symmetrical rear valve seat (10) and valve seat (13) on both sides of the handle sphere (3), and push and hold the handle sphere (3) with the elastic force of the valve seat butterfly spring (12) to realize the spherical surface seal. The sealing of the valve stem adopts a unique self-sealing pre-tightening device triple sealing structure, which can ensure the sealing under low pressure conditions, and under the action of high pressure, the medium pressure acts on the pressure bearing ring (17) to achieve self-sealing, thereby avoiding the need for packing seals With high pressure, the valve stem opening torque becomes very large.

The invention provides a thick oil thermal recovery single disc flat gate valve. A left step hole and a right step hole are symmetrically formed in the two ends of a passage arranged in a valve body 1 of the thick oil thermal recovery single disc flat gate valve, in addition, the outer step hole is larger, the inner step hole is smaller, the smaller hole is a round hole 22, the larger hole is a slotted hole 23, a left static valve seat 2 is in a circular ring shape and is arranged in the round hole 22 of the left step hole, a left movable valve seat 3 is in a circular ring shape and is arranged in the slotted hole 23 of the left step hole, a right static valve seat 4 is in a circular ring shape and is arranged in the round hole 22 of the right step hole, a right movable valve seat 5 is in a circular ring shape and is arranged in the slotted hole 23 of the right step hole, and in addition, contact surfaces of the left static valve seat 2 and the left movable valve seat 3 and the contact surfaces of the right static valve seat 4 and the right movable valve seat 5 are respectively inclined surfaces. A valve plate 6 is inserted and arranged between the left movable valve seat 3 and the right movable valve seat 5, and when the valve plate 6 downwards moves, the left movable valve seat 3 and the right movable valve seat 5 are driven to downwards move for realizing the sealing. The work requirements of the single disc flat gate valve at high temperature and at high viscosity are met.

The invention relates to a floating ball valve. The ball valve comprises a ball body, a valve body, a valve seat, a joint, a valve rod, a shaft sleeve, a wear-resistant sheet, a motor, a gasket, a sealing ring, a wear-resistant layer and a spring, wherein the valve body and the valve seat are connected with each other, the ball body is arranged on the valve seat, the joint is connected to the valve seat, the valve rod is vertically placed, one end of the valve rod is connected with the spring and is connected to the ball body, the other end of the valve rod is connected to the motor, the wear-resistant sheet and the wear-resistant layer are arranged on the outer side of the valve rod, and the shaft sleeve is arranged outside the wear-resistant layer. The floating ball valve has the advantages that the structure is simple, the sealing performance is good, the sealing surface is self-cleaned, opening and closing are convenient, friction is small, the opening torque is small, operation isstable, the production cost is low, and the service life is long.

The invention discloses a double-wedge type double-ball disc valve, which is a valve that makes the ball open and close without applying external force through rotation transmission, and avoids and reduces local force, friction and wear. It has a valve body, a The valve seat of the flow channel in the body, the bracket of the valve body, the ball corresponding to the valve seat in the valve body, the valve stem connected with the ball, the valve stem passes through the sealing packing of the valve body, the screw on the upper end of the valve stem and the valve body bracket The handwheel nut is matched, the side of the valve stem has an L-shaped guide groove, and the bracket is fixed with a guide pin whose end is inserted into the guide groove; it is characterized in that: the ball is two left and right balls, and the upper part between the two balls The upper and lower parts are open upper and lower conical spaces, and the upper and lower conical spaces correspond to an upper wedge sphere and a lower wedge sphere. The upper end of the upper wedge sphere is fixedly connected with the lower end of the stem, and the lower wedge sphere The lower end is connected with the valve body, and the upper end of the upper wedge sphere or the lower end of the valve stem also has a protruding pin, and the two ends of the pin are respectively located in the transverse grooves left on the upper ends of the two ball discs.

The invention relates to a pilot middle cavity balance pressure-type ultrahigh pressure ball valve for oil and gas production equipment. The pilot middle cavity balance pressure-type ultrahigh pressure ball valve comprises a main valve body, a first sealing valve seat, a second sealing valve seat and a pressure relief structure, wherein an auxiliary valve body is arranged at one side of the main valve body; a mounting cavity is formed in the main valve body; a valve ball is rotationally connected to the interior of the mounting cavity; a flow guide channel is formed in the middle of the valve ball; the first sealing valve seat and the second sealing valve seat are movably connected to the main valve body and oppositely arranged at two sides of the valve ball; and the pressure relief structure is arranged on the valve ball and is used for guiding a high-pressure medium to the mounting cavity to form a pressure balance state after the valve ball rotates to be opened at a preset angle. Due to the arrangement of the pressure relief structure, when the valve ball is rotated until the pressure relief structure corresponds to the flow guide channel, the high-pressure medium firstly enters the pressure relief structure to communicate with the mounting cavity, and at the moment, the pressure between the mounting cavity and the auxiliary valve body is balanced, so that quick opening and quick pressure relief are realized, the opening torque is reduced, the pressure relief stroke is shortened, damage to the sealing surface in the opening process is reduced, and the service life of the ball valve is prolonged.

The invention discloses an electric butterfly valve, which comprises a valve body. The valve body is internally provided with a channel penetrating through from left to right; a baffle plate is arranged on the inner side wall of the channel, and is provided with a valve port; the valve body is internally and rotatably connected with a rotating shaft, and the rotating shaft is fixedly provided witha flap plate; the outer side of the valve body is fixedly provided with a motor; the flap plate is provided with a first valve hole and a second valve hole, the second valve hole is internally and fixedly provided with a valve sleeve, and a magnetic guide sleeve is fixedly arranged on the opening of the right end of the first valve hole; the valve sleeve is internally provided with a sliding holepenetrating through from left to right; the sliding hole is internally and slidably connected with a valve core; a spring seat is fixedly arranged at the right end of the valve core, and the valve core is connected with a first spring in a sleeved mode; the right end of the magnetic guide sleeve is slidably connected with a moving iron, and the magnetic guide sleeve is provided with a push rod; acoil is arranged at the side face of the outer circumference of the magnetic guide sleeve; before the electric butterfly valve is opened, mediums at the two ends of the butterfly valve are in communication in advance to reduce a pressure difference between the two sides, and thus power of the motor does not increase suddenly when the flap plate is controlled to rotate.

The invention relates to the technical field of butterfly valves, and discloses an industrial steam intelligent control electric butterfly valve which comprises a valve body, an electromagnetic ring is embedded in the inner wall of the valve body, a sealing mechanism is fixedly installed on the inner wall of the valve body and comprises a valve seat, and a rubber ring is fixedly connected to the inner wall of the valve seat. The periphery of the rubber ring is fixedly sleeved with a metal soft ring, the left end of the valve seat is slidably connected with a magnetic ring in an inserted mode, the rear end of the valve body is movably connected with an adjusting mechanism, the adjusting mechanism comprises a worm, and the periphery of the worm is fixedly connected with an electric block. According to the industrial steam intelligent control electric butterfly valve, when the valve plate is closed, high pressure on the steam side is used for automatically providing high extrusion force between the rubber ring and the valve plate, and when the valve plate is opened, the rubber ring is controlled in advance to automatically reduce the extrusion force; therefore, the sealing abrasion is effectively reduced, the subsequent sealing quality is ensured, and the overall use stability of the valve is effectively improved.

The invention discloses a self-sealing eccentric half-ball valve which comprises a valve body, wherein a liquid inlet cavity is arranged in the valve body; one end of the valve body is provided with a water inlet communicated with the liquid inlet cavity, and the other end is provided with a water outlet communicated with the liquid inlet cavity; the top of the valve body is connected with a valve cap; the valve cap is connected with a main valve shaft; the bottom of the valve body is provided with an auxiliary valve shaft; a half ball valve plate connected to the main valve shaft and auxiliary valve shaft is arranged in the liquid inlet cavity; the surface of the half-ball valve plate is coated with an elastic sealing layer; the elastic sealing layer of the sealing surface of the half-ball valve plate and the inner port position of the water inlet form a contact fit to form an axial sealing pair capable of implementing axial sealing; and the elastic sealing layer on the sealing surface of the half-ball valve plate and the wall of the water inlet form a contact fit to form a radial sealing pair with radial self-sealing effect. The self-sealing eccentric half-ball valve has the dual effects of axial sealing and radial sealing, can not easily cause seepage or leakage, and has the advantages of small opening torque and longer service life.

The invention discloses a low-temperature rod-shaped valve stem sealant composition, comprising the following components in proportion by weight: 18-67.4 parts of methyl silicone oil, 2-8 parts of a tackifier, and 2-10 parts of fumed silica , 0.5 to 5 parts of structure improver, 15 to 25 parts of polyethylene wax, 2 to 8 parts of asbestos fiber, 10 to 20 parts of colloidal graphite, 1 to 5 parts of titanium dioxide, and 0.1 to 1 part of corrosion inhibitor. The invention also discloses a preparation method of the rod-shaped valve stem sealant composition. The present invention adopts fumed silica to thicken methyl silicone oil, and is matched with a stick-shaped valve stem sealant compound made of a tackifier, a solid lubricant, a molding agent and a corrosion inhibitor, and has excellent low-temperature performance, good High thermal stability and chemical stability, strong resistance to medium corrosion, excellent sealing, pressure resistance, adhesion and abrasion resistance, and non-toxic, non-stick, plastic, non-curing, arbitrary molding.

The invention discloses a valve, which comprises a valve body, a valve stem, a valve seat and a valve core assembly. The valve core assembly is installed in the valve body and includes a valve core, the valve core is hinged to the valve body, and the valve core assembly further includes a driving part, a positioning part and an elastic part. Among them, the positioning part can be installed on the valve core in a relatively movable manner, the elastic part is installed between the positioning part and the valve core, and the coupling relationship between the driving part and the positioning part can make the valve have three transmission relationships during the closing process: the driving part Cooperate with the positioning part to form a relatively static first transmission relationship; the driving part squeezes the positioning part to make the positioning part perform a second transmission relationship relative to the valve core; the driving part and the positioning part are switched from the second transmission relationship to driving The third transmission relationship between the component and the spool. The valve of the invention has the beneficial effects of few parts, good manufacturing process, simple structure and high space utilization rate.

A package comprising a metallic container having a mouth portion and a metallic cap with a liner fitted to the mouth portion, wherein the liner 17 of the cap includes an outer ring 20 hanging down from an outer circumferential end thereof and an inner ring 21 hanging down on the inside of the outer ring 20 ; the inner surface of the outer ring 20 extends straight in the vertical direction; and a corner portion from the top panel to the skirt is draw-formed while pushing the cap from the upper direction in a state where the open end of the container mouth portion is inserted, so that the innersurface of the outer ring is brought into close contact with the outer surface of the side wall portion formed at the open end of the container mouth portion, an inner protruded portion is formed at the lower end of the inner surface of the outer ring so as to protrude inward, and the inner protruded portion is brought into close contact with the outer side portion of the lower curled portion of the container mouth portion. The package effectively prevents the breakage of the sealing before the breakage of the bridge that connects the TE band, and can be favorably resealed.

The invention discloses a centrifugal vacuum pump protection device used in an ultra-high-speed wind tunnel. The protection device includes auxiliary valves, linkages and branch pipelines; the branch pipelines are perpendicular to the main pipeline and located downstream of the main valve, the main valve is installed on the main pipeline, and the auxiliary valves are installed on the branch pipelines. The active end of the valve stem of the auxiliary valve is connected by a linkage; the degree of freedom of movement of the linkage is 90°, at the position of the main valve, when the apex angle of the linkage is 30°, the main valve opens and the auxiliary valve closes , when the top angle of the linkage mechanism is 150°, the main valve is closed and the auxiliary valve is opened. The protection device can avoid the "blind pumping" phenomenon of the centrifugal vacuum pump and protect the normal operation of the centrifugal vacuum pump.