52results about How to "Solve the leaky seal" patented technology

The invention relates to the technical field of valve devices, in particular to a one-way valve. A first elastic part is arranged on the inner wall surface of an inlet of a one-way valve body, and a baffle plate is arranged on the first elastic part and on the inner wall surface of the valve body on one side opposite to the inlet. The one-way valve solves the problem of untight locking in the locking process.

The invention relates to a pipe gate valve, in particular to an electric gate valve used in a high-temperature environment. The electric gate valve comprises a valve plate, a lower valve body, an upper valve body, a platform, a driving device, driven wheel devices, counterweight devices and a sealing device, wherein the sealing device is mounted on the upper part of the lower valve body and comprises ceramic fibers, a pressing plate, a pressing rod, a push plate, a push rod and locking nuts; the ceramic fibers are mounted on the upper part of the lower valve body; the pressing plate is mounted on the upper parts of the ceramic fibers through the pressing rod and the locking nuts and is used for adjusting the sealing effect of the ceramic fibers in the radial direction; and the push plate is mounted on the other sides of the ceramic fibers relative to the lower valve body through the push rod and the locking nuts, and is used for adjusting the sealing effect of the ceramic fibers in the axial direction. The sealing effect of the ceramic fibers can be adjusted in the radial direction and the axial direction by the sealing device, the problem of untight seal caused by change of sizes of the ceramic fibers is solved, and the sealing effect is good.

The invention relates to a shift-fork type controllable non-contact wedge block inverted device. A non-return member and a controller are arranged on a rotation-preventing arm; the connecting rod of ashift fork member connects with the controller; the inner ring of the non-return member is provided with a bearing and a seal ring, and the outer ring is provided with a front end cap and a rear endcap; cover plates are arranged on the end caps; a wedge block assembly is arranged in a rail formed between the inner ring and the outer ring; a plurality of wedge blocks are arranged between two yokeplates of the wedge block assembly; two ends of the wedge block are provided with torsion springs; the two yoke plates and two shift rings are integrated movably via ring openings which correspond mutually; two fixed stopping rings of the wedge block assembly are provided with holes corresponding to a stopping pin and a yoke plate positioning pin and are assembled together by mutual embedment; the inner end of the shift-fork axle of the shift-fork member movably connects with the outer end of the shift fork; the inner-end fork port of the shift fork is held on any shift-ring positioning pin of the shift rings; the bearing point of the shift fork connects movably with a corresponding yoke plate via screws; the outer end of the shift-fork axle of the shift-fork member stretches out a connecting rod from a round hole on the end surfaces of the end caps of the non-return member.

The invention discloses a magnetic suction type rotating device, which comprises one or more sets of magnetic blocks, a partition of a non-magnetic material, a rotating object and a power source, one or more sets of magnetic blocks, The upper and lower magnetic blocks are respectively arranged on the upper and lower sides of the partition, the upper magnetic block is a passive component, the lower magnetic block is an active component, and the upper magnetic block is combined with the rotating object; the lower magnetic block is driven by a power source. The invention utilizes the interaction of the N and S polarities of the magnetic blocks on both sides to drive the rotation. The magnetic block on one side can be controlled and driven by a power source, and the magnetic block on the other side can be attached to a rotating object. Therefore, Through the control of the power source, the rotating object can rotate freely. It can be applied to a closed ornamental cover, and the rotating object is driven by means of space to drive the quicksand to stir, creating a special visual viewing effect of the jet scene. The passive component and the active component do not need to be in direct contact, which solves the problem of poor sealing in the prior art.

The invention discloses blank processing equipment for graphite heat field, which comprises a bottom plate, an arc-shaped vertical plate, a sliding mechanism, a lifting mechanism, and a stirring mechanism. There is a support plate in the middle of the shaped vertical plate, a crucible tube is installed in the circular through hole, an insulation tube is set on the outer surface of the crucible tube, and the two sides of the outer wall of the insulation tube are slidingly connected with the support plate through multiple pairs of sliding mechanisms; The two ends of the cover plate are movably connected to the corresponding arc-shaped vertical plate through a pair of lifting mechanisms; the motor shaft end of the motor rotates synchronously with the stirring mechanism. The invention also discloses a processing method for the blank processing equipment used in the graphite thermal field; The invention solves the problems of inconvenient installation and lifting of the crucible, uneven stirring of graphite materials, and poor sealing of the crucible opening. Through the cooperative use of various mechanisms, the operation steps are simplified, the labor burden of workers is reduced, and the efficiency of graphite material processing and production is improved.

The invention provides a gas leak-proof vacuum port screw cylinder which comprises a vacuum port screw cylinder body, a vacuum port and a plurality of lead screws, wherein, corresponding through-holes are respectively formed on two opposite sides of the vacuum port screw cylinder body, and double screws can pass through the through-holes; the vacuum port is formed at the top of the vacuum port screw cylinder body, and a vacuum gland can be installed through the vacuum port; and the lead screws are arranged at the top of the vacuum port screw cylinder body and positioned around the vacuum port. No screw hole is formed on the gas leak-proof vacuum port screw cylinder, and the lead screws are arranged on the upper surface at the top of the vacuum port screw cylinder in a protruding manner, so that air leakage is caused because the screw hole is jammed by material and then a screw cannot be screwed in can be avoided consequentially, and the problem that the vacuum port is poorly sealed can be solved.

The invention relates to a engagement-type controllable non-contact wedge block inverted device, which comprises a non-return member, a controller, a rotation-preventing arm and a wedge block assembly, wherein, the non-return member and the controller are arranged on the rotation-preventing arm; the inner ring of the non-return member is provided with a bearing and a seal ring, and the outer ringis provided with a front end cap and a rear end cap; cover plates are arranged on the end caps; the wedge block assembly is arranged in a rail formed between the inner ring and the outer ring; a plurality of wedge blocks are arranged between two yoke plates of the wedge block assembly; two ends of the wedge block are provided with torsion springs; the two yoke plates and two shift rings are integrated movably via ring openings which correspond mutually; two fixed stopping rings of the wedge block assembly are provided with holes corresponding to a stopping pin and a yoke plate positioning pinand are assembled together by mutual embedment; engaging elements are arranged in the end caps of the non-return member. The engagement force between gears and a gear chain is adopted to overcome inverted moments, the additional radial force produced during the force transmission can be significantly reduced, thereby improving the stress conditions of the wedge blocks, distributing loads evenly, facilitating the inverted device to run stably and reliably, and prolonging the service life of the inverted device.

The invention discloses a hole packer for a coal mine. The hole packer comprises a water injection pipe, a pressure bearing pipe and two steel hoops, wherein the water injection pipe is arranged in an inner cavity of an extraction pipe and penetrates through the pipe wall to form an opening; the pressure bearing pipe wraps the extraction pipe and covers the opening; and the two steel hoops are located on the two sides of the opening and fix the pressure bearing pipe to the extraction pipe in a sealing mode. The pressure bearing pipe at least comprises one rubber layer and one woven cloth layer. When rubber substances inside the pressure bearing pipe deform along with deformation of a drill hole in later period of extraction, the pressure bearing pipe can always keep in tight fit with the wall face of the drill hole, and long-term sealing of the drill hole is achieved. Meanwhile, a coagulation capsule does not need to be installed inside the pressure bearing pipe, namely high-pressure water is adopted for supporting the pressure bearing pipe, and good sealing of the drill hole is kept always. The hole packer for the coal mine is simple and reliable to operate and good in blocking effect, the labor intensity of operators is greatly relieved, and the problem that when solid hole sealing materials like polyurethane are adopted, sealing is not tight due to deformation of the drill hole after extraction is conducted for a period is solved.

The invention provides a U tube. A tube body is included, the tube body is of a dual-layer structure, the length of the outer-layer tube body is smaller than that of the inner-layer tube body, the outer-layer tube body and the inner-layer tube body are sealed on a port of the outer-layer tube body, a groove or outer-turning-side structure is arranged on the port of the outer-layer tube body. The Utube is simple in structure and ingenious in design, the problem that the U tube and warping fins are not tight in seal is solved effectively, and the tube is suitable for large-scale industrial production needs.