25results about How to "Achieve multiple seals" patented technology

The invention belongs to the technical field of shielding doors, particularly relates to a medical polymer radiation shielding door seam sealing device, and aims to solve the problems that a sealing rubber strip arranged on the side, close to a wall, of an existing lead door can be abraded under long-time friction, so that the sealing effect is reduced, leakage is difficult to detect when abrasion is small, and outdoor safety is affected. According to the scheme, the shielding door comprises a door frame and a shielding door body arranged on one side of the door frame in a sliding mode, a mounting base is arranged on one side of the door frame, a speed reducer is fixedly arranged on the top of the mounting base, a motor is fixedly arranged on one side of the speed reducer, and the output end of the motor is fixedly connected with the input end of the speed reducer; through the cooperation of the motor and the speed reducer, efficient driving and smooth sliding are achieved, multiple sealing and linkage sealing are achieved in cooperation with the sealing mechanism, meanwhile, safety can be guaranteed through the monitoring mechanism, and powerful guarantee is provided for the safety and reliability of the medical environment.

The invention discloses continuous production mixing equipment for a low-VOC polyurethane foaming catalyst, and relates to the technical field of catalyst production.The continuous production mixing equipment comprises a quantitative discharging mechanism and a conveying pipe installed on one side of the top of the quantitative discharging mechanism, a material mixing mechanism is arranged at the bottom of the quantitative discharging mechanism, and a material mixing motor is arranged at the top of the material mixing mechanism; the quantitative discharging mechanism comprises a first fixing support, a crushing box is fixedly mounted on one side of the interior of the first fixing support, a grinding box is fixedly mounted at the bottom of the crushing box, a protective cover is fixedly mounted on the inner side of the top of the crushing box, and a lifting motor is fixedly mounted in the center of the top of the crushing box. A separation baffle is sealed through an attaching sealing plate, the ground raw materials can be conveniently sealed and stored, the situation that the raw materials make contact with air, and consequently the catalytic effect of the raw materials is affected is avoided, and the situation that the catalytic effect of the raw materials is affected due to oxidation of the raw materials is avoided by conducting multiple sealing on the quantitative discharging mechanism.

The utility model relates to water meter installation technical field especially relates to a water meter well. Including well body and well lid, the well body top end is provided with the placement groove of placing well lid, the vertical section of placement groove is ladder -shaped, the well lid includes first lid body and second lid body from top to bottom in proper order, first lid body and second lid body all are embedded in the placement groove, the upper end of well body is also provided with annular limit slot, the outer periphery of first lid body is provided with annular installation slot, is equipped with elastic ring in installation slot, the outer periphery of first lid body is still provided with sealing ring, the upper end of sealing ring is equipped with first extension, the lower end is equipped with second extension, the inner diameter of first extension and second extension all are less than the outer diameter of first lid body. The utility model discloses through setting up the sealing structure of well lid and the limit slot of well body top end mutual cooperation, has realized the close adhesion of well lid and well body, has effectively reduced the probability of silt invading water meter well, thereby prolongs the service life of water meter.

The invention discloses a waterproof and dustproof quick plugging device for a port of a directly-buried prefabricated thermal insulation pipe, and mainly relates to the technical field of construction and maintenance of thermal insulation pipes. Comprising a sealing cover and a center rod, a protruding part making contact with the inner side of a pipe body is arranged in the middle of the sealing cover, a first supporting block is slidably connected to the center rod, the end of the first supporting block makes contact with the protruding part, a transverse plate is arranged at the end of the first supporting block, and a second supporting block is slidably connected to the transverse plate; the first air bag and the second air bag make contact with the sealing cover, the center rod is provided with a first wedge-shaped block which drives the first supporting blocks to slide on the center rod in the radial direction at the same time, the second supporting blocks are provided with fixing rings, and the pull rope sequentially penetrates through the fixing rings and drives the second supporting blocks to slide on the transverse plate. The device has the beneficial effects that the problem that temporary plugging of the end opening of the directly-buried prefabricated thermal insulation pipe is inconvenient is solved, and the plugging effect on the end opening of the directly-buried prefabricated thermal insulation pipe is improved.

The present invention proposes a cross shaft universal joint, comprising a cross shaft body, a bearing outer ring and a needle roller, an outer oil seal, an inner oil seal, a compensating oil seal, a compression screw sleeve and an oil storage chamber, wherein the outer oil seal is mounted on the shaft head, the inner oil seal is mounted on the inner side of the bearing outer ring, the compensating oil seal is arranged between the outer oil seal and the inner oil seal, one side of the outer oil seal abuts against the first stepped groove on the shaft head, and the other side abuts against the compensating oil seal, the compression screw sleeve is threadedly connected with the bearing outer ring to drive the compensating oil seal to press against the outer oil seal, the outer ring of the inner oil seal is clamped on the second stepped groove in the bearing outer ring, and the inner ring abuts against the outer wall of the shaft head; an oil storage chamber is arranged in the cross shaft body, and an oil guide channel connected to the oil storage chamber is arranged in the shaft head to guide lubricating oil to the needle roller in the bearing outer ring. Through the cooperation of the outer oil seal, the inner oil seal and the compensating oil seal, multiple seals are realized, which can effectively prevent dust and avoid leakage of internal lubricating grease.

The present invention belongs to the technical field of shielding doors, and in particular to a sealing device for medical polymer radiation shielding doors. Aiming at the problem that the sealing strip arranged on the side of the existing lead door close to the wall will wear out under long-term friction, resulting in reduced sealing effect, and when the wear is small, it is difficult to detect leakage, thus affecting outdoor safety, the following scheme is proposed, which includes a door frame and a shielding door slidably arranged on one side of the door frame, a mounting seat is arranged on one side of the door frame, a reducer is fixedly arranged on the top of the mounting seat, a motor is fixedly arranged on one side of the reducer, and the output end of the motor is fixedly connected to the input end of the reducer, and efficient driving and smooth sliding are achieved through the coordinated use of the motor and the reducer, and multiple sealing and linkage sealing are achieved in cooperation with the sealing mechanism, and at the same time, multiple beneficial effects such as safety can be ensured through the monitoring mechanism, providing a strong guarantee for the safety and reliability of the medical environment.

The utility model belongs to the technical field of motors, and particularly discloses a multiple sealing structure of a motor, which comprises a motor body, one side of the motor body is fixedly connected with a mounting ring, the output end of the motor body rotatably penetrates through the inside of the mounting ring and extends to the outside of the mounting ring, the inside of the mounting ring is provided with a sealing groove, and the sealing groove is fixedly connected with the motor body. According to the multi-sealing structure of the motor, silicone oil in the second flow guide groove can be discharged to the output shaft of the motor body and the sealing ring through the assembling ring, so that the sealing ring is protected to a certain degree, and the sealing ring is prevented from being damaged. Meanwhile, the silicone oil enhances the sealing performance of the device to a certain extent, multiple sealing is achieved, the sealing ring can be protected to a certain extent by adding the silicone oil, damage to the sealing ring caused by continuous rotation of the output shaft of the motor body is reduced to a certain extent, and therefore the service life of the sealing ring is prolonged to a certain extent.

The double W-shaped combined metal sealing structure is used for the roller bit. The dynamic sealing ring is located at the top of the sealing cavity, interference fits in the inner hole of the roller, and rotates with the roller. The sealing cavity is surrounded by the inner hole of the roller and the root of the roller shaft neck. The dynamic sealing ring and the static sealing ring rotate relatively, and the end faces cooperate with each other to form a dynamic sealing surface. An outer rectangular groove is provided on the outer cylindrical surface of the upper part of the static sealing ring. An outer W-shaped rubber ring is embedded in the outer rectangular groove. The opening of the outer W-shaped rubber ring faces the outer cylindrical surface of the sealing cavity. The outer W-shaped rubber ring fits tightly with the static sealing ring and the outer cylindrical surface of the sealing cavity to form a static sealing surface. The bottom of the static sealing ring is embedded in the groove of the inner W-shaped rubber ring. The inner W-shaped rubber ring is compressed and embedded between the static sealing ring and the root of the roller shaft neck, and keeps tight fit with the static sealing ring, the lower end surface of the sealing cavity and the inner cylindrical surface to form a static sealing surface. The opening of the inner W-shaped rubber structure faces the inner cylindrical surface of the sealing cavity. An oil storage tank is provided on the groove of the inner W-shaped rubber ring.

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.

This invention relates to the field of water tightness testing technology for large-span arc-shaped gates, and proposes a temporary sealing device for water tightness testing of large-span arc-shaped steel gates. The device includes a support frame fixed to the base plate and located on the backwater side, a sealing template on the water-facing side, reinforcing components, and a sealing structure. The support frame is formed by welding steel sections to create a side baffle and is equipped with internal reinforcing components to improve rigidity. The sealing template is connected to the support frame and forms a closed area with the arc-shaped steel gate and gate pier to withstand the water pressure of the water tightness test. The reinforcing components are arranged between the support frame and the base plate, limiting frame displacement through rigid anchoring or gravity. The sealing structure is located at the joints of the sealing template, the junction of the sealing template and the gate pier, and the contact area between the sealing template and the base plate, achieving multiple seals to prevent leakage. This invention has high structural strength and reliable sealing, effectively resisting the water pressure of the water tightness test, reducing the risk of leakage, adapting to different gate opening sizes, and ensuring the safe and smooth conduct of the arc-shaped gate water tightness test.

The utility model discloses a multi-seal high-speed solenoid valve, which relates to the technical field of solenoid valves and comprises a shell, an outer shell and a valve body, the valve body is fixedly mounted at the bottom of the shell, actuators are fixedly connected to the inside and the top of the shell, partition plates are fixedly mounted on two sides of the shell, the outer shell is fixedly connected to one side of the partition plate on one side of the shell, and the outer shell is fixedly connected to the other side of the shell. A fixing plate is fixedly connected into the shell, a suction part is slidably mounted in the shell, a baffle is movably mounted in the shell on one side of the fixing plate through a first spring, a sliding plate is movably mounted in the shell on the other side of the fixing plate through a second spring, and a pressure sensor is fixedly mounted in the shell on the top of the sliding plate. Through the combination of various structures, when the valve rod at the bottom of the execution body leaks, the device can detect and give an alarm in time, a medium is intercepted in the shell, meanwhile, multiple sealing of the high-speed electromagnetic valve is achieved by installing the sealing gasket, and waste caused by flowing out of the medium is prevented.

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.

The utility model discloses a storage type bottle cap which comprises a cap body, a material bottle, a pipe cap and a sleeve pulling cap, the cap body is integrally provided with an inner cylinder and a cap table part, the top wall of the inner cylinder is provided with an annular inserting part, a sleeve is fixedly arranged in the cap table part, a water outlet hole is formed between the sleeve and the cap table part, the material bottle is integrally provided with a cavity part and a pipe part, and the material bottle is movably inserted into the inner cylinder. The bottom end of the cavity part is provided with a through hole, the top wall of the cavity part is provided with an annular opening part, and the top end of the pipe part is provided with a feeding port. The bottle cap has an initial state and an open state, in the initial state, the annular opening part and the annular inserting part are tightly buckled, and a sealed storage space is formed by the cavity part, the cap body and the pipe cap; in the open state, the material bottle moves downwards by pressing the pipe cover, the annular opening part and the annular inserting part are separated, the through hole is exposed out of the inner barrel, the through hole, the annular opening part and the water outlet hole are communicated to form a water outlet channel, and the water outlet can be used by pulling up the sleeve pull cover. According to the bottle cap, the water outlet smoothness, the assembling easiness and the operation convenience are improved.

The utility model discloses a spring energy storage sealing ring with a good sealing effect, and relates to the technical field of spring energy storage sealing rings, the spring energy storage sealing ring comprises a first sealing ring, the bottom surface of the first sealing ring is fixedly connected with a second sealing ring, the upper surface of the first sealing ring is provided with a V-shaped ring groove, the inner wall of the V-shaped ring groove is clamped with a V-shaped spring, and the inner wall of the V-shaped ring groove is fixedly connected with the second sealing ring. A rubber ring is arranged in the V-shaped spring, and the inner wall of the rubber ring is fixedly connected with stainless steel elastic supporting rings arranged annularly. Through the arrangement of the first sealing ring, the V-shaped spring, the rubber ring and the stainless steel elastic supporting ring, outward tension can be formed by means of pressing of the V-shaped spring, the first sealing ring is promoted to expand outwards to be tightly attached to the sealing groove, and due to the fact that the spring provides elastic force for the sealing ring permanently, energy storage sealing of the first sealing ring is achieved; and the deformation tolerance of the V-shaped spring is improved through the rubber ring and the stainless steel elastic supporting ring, so that effective use of the spring energy storage sealing ring is facilitated.

The utility model provides a membrane stack water collecting pipe, which comprises a water collecting pipe body, a water collecting joint and a water collecting shaft sleeve which are connected in sequence, the water collecting pipe body is provided with a plurality of groups of water collecting holes at intervals along the axial direction, each group comprises a plurality of water collecting holes, and the plurality of water collecting holes in each group are arranged at intervals along the circumferential direction; a sealing groove is formed in the outer wall of the water collecting connector, a sealing ring can be arranged in the sealing groove, and the end, provided with the sealing ring, of the water collecting connector is inserted into the end of the water collecting shaft sleeve and is detachably connected with the water collecting shaft sleeve in a sealed mode. According to the membrane stack water collecting pipe, the structure of the water collecting pipe is optimized, rapid installation and connection with a support water collecting pipe are achieved, the installation process is simplified, and the installation efficiency is improved; and the sealing performance of the membrane and the water collecting pipe is improved.

The invention discloses a temperature measuring wire leading-out device and method and hot isostatic pressing equipment, belongs to the technical field of temperature measurement, and aims to solve the problems of high failure rate, poor sealing performance and short service life of a temperature measuring wire leading-out device in the prior art. The lead-out device comprises a cup sleeve and a sealing piece arranged in the cup sleeve, the sealing piece comprises an elastic base body, a rigid gasket, an elastic cushion block and a rigid cushion block, the rigid gasket, the elastic cushion block and the rigid cushion block are sequentially stacked on at least one end face of the elastic base body, and a plurality of wire penetrating holes are formed in the sealing piece and do not intersect. The lead-out device can be used for leading out the temperature measuring lead in the hot isostatic pressing equipment.

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.

The invention provides a splicing type sealing inner container structure of an intelligent miniature archive room, and belongs to the technical field of archive rooms. The inner container structure is formed by splicing the plate bodies, the edge of one of the adjacent plate bodies is folded to form the hooking line, the corresponding edge of the other plate body is provided with the arc-shaped abutting face, the arc-shaped abutting face is inserted into the corresponding hooking line, the arc-shaped abutting face abuts against the folding position where the hooking line is formed, assembly is facilitated, and the assembly efficiency is improved. The inner container structure has the advantages that labor burden is relieved, later overhaul and maintenance are facilitated, maintenance cost is reduced, the problem that the edge of the plate body cannot be inserted to the bottom due to the fact that a gap dead angle occurs at a corner due to turnover machining is solved by means of tight attachment of the arc-shaped abutting face and the turnover position where the hook line is formed, and in addition, a plastic spraying layer is arranged on the inner wall of the formed inner container structure. And the assembly gaps between the plate bodies are further filled through the plastic spraying layers, the sealing performance of the inner container structure is further guaranteed, multiple sealing is achieved, and the sealing performance is better.