10results about How to "Achieve multiple seals" patented technology

The utility model belongs to communication server technical field especially relates to communication server with protective structure at serial port, include: communication server body, the position of serial port body department corresponding to communication server body outer surface is provided with meshing edge, the periphery of meshing edge is provided with semicircle ring no.

The application relates to a dynamic sealing structure of a downhole double-actuator giant magnetostrictive transducer, which dynamically seals the output rod of the giant magnetostrictive actuator from two aspects. One aspect is to prevent water from entering, rubber sleeves capable of fitting the output rod and the connecting ring in shape are arranged at both ends of the central through hole of the connecting ring, and a suitable adhesive is selected to bond the rubber sleeves on the output rod and the connecting ring, and the elastic rubber sleeves are used for dynamically sealing the output rod in axial reciprocating motion. Secondly, O-ring grooves are designed on the side wall of the central through hole of the connecting ring and the output rod, and the O-rings are respectively arranged in the grooves on the side wall of the central through hole of the connecting ring and the output rod in the form of being embedded or sleeved, and the O-rings are compressed and deformed through interference fit with the contact surfaces of the output rod and the connecting ring to prevent water from entering. The other aspect is water storage, the upper connecting ring and the lower connecting ring are manufactured by using a metal 3D printing technology, and the entering water is guided to the water storage groove through the drainage groove and the funnel-shaped drainage channel structure in the connecting ring.

The application relates to the field of stainless steel pipe connection, and discloses a stainless steel pipe connection sealing mechanism, which comprises two stainless steel pipes and a connecting head arranged between the two stainless steel pipes. Inner thread assembly grooves are arranged on the left and right sides of the connecting head. A same communication hole is arranged on the inner wall of the side, where the two inner thread assembly grooves are close to each other. The ends, where the two stainless steel pipes are close to each other, respectively penetrate through the corresponding inner thread assembly grooves and extend into the communication hole. Bearings are fixedly sleeved on the two stainless steel pipes. The outer rings of the two bearings are fixedly sleeved with outer thread sleeves. The application has the following advantages and effects: multiple sealing between the two stainless steel pipes and the connecting head can be realized, the sealing performance of the connection part of the two stainless steel pipes can be ensured through the synergistic effect of multiple sealing, the omnibearing sealing effect is realized, and the application is suitable for fluid conveying scenes with strict sealing requirements.

The utility model provides a kind of explosion-proof switch of double-layer sealing structure, including lower explosion-proof shell and upper explosion-proof shell, and the lower explosion-proof shell is detachably fixed and installed between upper explosion-proof shell, the top of the lower explosion-proof shell is fixed with outer pressure side, the inner wall of the outer pressure side is fixed with inner pressure side, annular pressure groove is formed between the outer pressure side and inner pressure side, and the bottom of the upper explosion-proof shell is fixed with outer fixed ring.The utility model's lower explosion-proof shell and upper explosion-proof shell are nested between annular pressure groove formed between outer pressure side and inner pressure side and inner fixed ring, outer fixed ring is nested with outer pressure side, and sealing ring is set in nesting part, multiple sealing is realized, meanwhile, the groove bottom of annular pressure groove is provided with oil injection flow channel communicated with outside, can realize injecting sealing oil to annular pressure groove inside, realize oil seal, effectively improve the sealing performance of the explosion-proof switch.

The utility model relates to the technical field of chemical product transportation, and discloses an explosion-proof storage device for chemical product transportation, which comprises a tank body, a sealing component is arranged in the tank body, a shell is sleeved outside the tank body, a connecting block is fixedly connected to the outer wall of the tank body, and a buffer component is arranged in the connecting block; the sealing assembly comprises a sealing cover, a threaded rod and a threaded pipe, a connecting ring is fixedly connected to the outer wall of the threaded pipe, a sealing gasket is fixedly connected to the lower surface of the connecting ring, a transmission rod is slidably connected to the interior of the sealing cover, a ball is fixedly connected to one end of the transmission rod, and a groove is formed in the inner wall of the tank body. According to the sealing assembly, through the synergistic effect of the sealing cover, the threaded rod, the threaded pipe and the sealing gasket in the sealing assembly, multiple sealing of the tank body can be achieved, and chemical products are effectively prevented from leaking and the explosion risk caused by volatilization or the external environment is remarkably reduced by combining guiding locking of the transmission rod, the ball and the groove.

The utility model discloses a boiler pressure vessel with a leakproof structure, which relates to the technical field of pressure vessels and comprises a pressure tank, a top cover is mounted at the top of the pressure tank, and limiting mechanisms are arranged on the surfaces of the pressure tank and the top cover and used for limiting the top cover; a sealing assembly is arranged in the pressure tank and comprises a plurality of limiting air holes formed in the inner wall of the pressure tank. The sealing assembly is arranged and comprises a limiting air hole, a sliding column, a movable sealing ring, a limiting fixing ring, an annular sealing groove, a positioning sealing ring, a limiting protruding block, a limiting groove and the like, and multiple sealing between the top cover and the pressure tank is achieved. By means of abutting lap joint between the movable sealing ring and the positioning sealing ring and insertion matching between the limiting protruding block and the limiting groove, the sealing reliability and stability are greatly improved, medium leakage is effectively prevented, and safe operation of the boiler pressure vessel is guaranteed.

The utility model discloses an underwater oil and gas production tree tubing hanger plug which comprises a plug body, a metal sealing ring and a guide plate which are axially connected in sequence, and an inner fishing assembly is movably connected in the front end of the plug body. A first annular step is arranged at the position, close to the metal sealing ring, of the rear end of the plug body, the first annular step is sequentially sleeved with a first supporting ring, a first V-shaped sealing ring, an O-shaped ring, a second V-shaped sealing ring and a second supporting ring in the axial direction, and the end face, away from the second V-shaped sealing ring, of the second supporting ring makes contact with the front end of the metal sealing ring. According to the underwater oil production and gas production tree tubing hanger blanking plug, the metal sealing ring is matched with the first supporting ring, the first V-shaped sealing ring, the O-shaped ring, the second V-shaped sealing ring and the second supporting ring, multiple sealing is achieved, the blanking plug can move up and down in the working barrel while sealing is achieved, and the blanking plug is convenient to use. Therefore, the blanking plug is easy and convenient to salvage and easy to operate.

The utility model is suitable for the technical field of cosmetic bottles, and provides a porous cosmetic bottle which comprises a cosmetic bottle body, and two inner tubes used for containing cosmetics are arranged in the cosmetic bottle body. The bottle cap main body is detachably assembled on the bottle mouth of the cosmetic bottle body; the top cover is fixed at the top of the bottle cap main body through a folding sheet; and the limiting structure is arranged on the bottle cap main body and is used for limiting. According to the porous cosmetic bottle provided by the scheme, the problem that cosmetics are inconvenient to take and use due to the fact that an existing tube-in-tube cosmetic bottle adopts a double-screw-cap type bottle cap design is solved.

This utility model belongs to the field of electric motors, specifically a multi-sealing structure for an electric motor including a motor, a pressure cover, and a rotor. The pressure cover is fixed to the motor with bolts. The rotor is rotatably disposed within the motor cavity, and its end penetrates the pressure cover. A pressure cover shaft seal is embedded on the surface of the pressure cover. The rotor is inserted into the inner cavity of the pressure cover shaft seal. A limit ring is integrally formed on the surface of the motor. A double-sided shaft seal is movably disposed within the inner cavity of the limit ring. The double-sided shaft seal consists of an outer shaft seal ring, an inner shaft seal ring, and a partition plate. The outer and inner shaft seal rings are connected by the partition plate, which is located in the middle of the outer and inner shaft seal rings. This utility model achieves multiple seals for the motor by combining the double-sided shaft seal with the pressure cover shaft seal, which improves the motor's sealing performance during use. Simultaneously, lubricating grease flows out from the oil outlet hole, lubricating the rotor surface and the inner shaft seal ring, reducing wear on the inner shaft seal ring, and extending the service life of the double-sided shaft seal.

This invention belongs to the field of gate valve technology, and specifically relates to a bellows gate valve for phosgene pipelines. It includes a valve body, valve seat, valve cover assembly, hollow valve stem, and handwheel. The outer wall of the hollow valve stem has a lifting thread that mates with the valve cover assembly. A corrosion-resistant rubber valve core that mates with the valve seat is fixedly sleeved at the bottom of the hollow valve stem. The corrosion-resistant rubber valve core has an expansion cavity inside, which communicates with an opening at the bottom of the hollow valve stem. This invention enables the bellows gate valve for phosgene pipelines to not only have impact buffering, phosgene leakage prevention, real-time monitoring and accurate alarm for sealing failure, but also multiple sealing functions when the gate valve is closed. This effectively improves the sealing effect and reliability of the gate valve, significantly enhances its protective performance, extends its service life, effectively avoids safety accidents caused by large-scale phosgene leakage, and improves the safety and reliability of phosgene pipeline operation.