31results about How to "Good sealing contact" patented technology

The loose-flange type fitting according to the present invention is closely sealed with an elastic gasket whose both the sides and outer circumferential face are pressed against a pipe collars and a reinforcing ring so that the seal contact therebetween increases in degree together with rising of a tubeside internal pressure, in which the seal material comprising an annular elastic gasket, a metallic reinforcing ring disposed on the outer circumferential side of the elastic gasket and the inner circumferential face of the elastic gasket having substantially a V-shaped cross-section and the axial width of the gasket being broader than that of the reinforcing ring under non-compression conditions.

A polymeric pipe fitting assembly for joinder with a polymeric pipe section without using adhesives or other chemicals comprises a polymeric fitting and an elastomeric gasket formed as a unit, preferably by molding. The fitting has a main body portion with a pipe-receiving socket portion at one end. The gasket has a first axial portion molded in intimate sealed surface engagement interiorly within the socket portion and a second integral axial portion projecting axially from the socket portion. The axial portions of the gasket form a continuous interior wall surface for receiving a polymeric pipe section in peripheral surface contact with an exterior surface of the pipe section. The second axial portion of the gasket is encircled by a mechanical clamping device for sealing the gasket against the exterior of the pipe section.

A flow control device for a heat exchanging system comprises a shell, a valve element and a transmission element; the shell forms a containing part, a first connection port and a second connection port; the valve element comprises a body part, a first circulating channel and a sealing contact part; the first circulating channel comprises at least one circulating port which outwards penetrates thebody part; the valve element can move relative to the shell; the first connection port and the second connection port can be connected through the first circulating channel; the sealing contact part and the inner periphery side of the shell are in movable sealing arrangement; the inner periphery side of the shell is provided with the shell contact part making contact with the sealing contact part;and the inner sealing performance of the product is improved.

The invention discloses a waterproof self-locking radio-frequency coaxial connector assembly. The assembly comprises male and female radio-frequency coaxial connectors; the male connector comprises a cylindrical clamping jaw, a bush and a thread sleeve; a conical hole and a clamping jaw annular bulge are arranged at the front end of a cylindrical body of the clamping jaw; the clamping jaw annular bulge is provided with an outwards tilted radial conical surface which is tilted outwards and radially; an outer threaded section is arranged on the outer wall surface of the bush; the thread sleeve is provided with an inner threaded section and a first thread sleeve annular bulge which is bulged inwards; the thread sleeve is in threaded connection with the outer threaded section of the bush through the inner threaded section; the first thread sleeve annular bulge props against the outer conical surface when the thread sleeve is moved forwards through manual screwing; the outwards tilted radial conical surface of the clamping jaw props against a female annular bulge; the assembly further comprises a cylindrical waterproof sleeve made of an elastic waterproof material; and two ends of the waterproof sleeve tightly sleeve a female outer conductor and a cable respectively. According to the assembly, the female and male connectors are not mutually rotated and moved after being inserted and combined, so that stable dynamic intermodulation and stable radio-frequency signal transmission are achieved and the waterproof effect is good.

A valve assembly for a viscous clutch includes an orifice plate defining a bore to allow the passage of a fluid through the orifice plate, a reed valve secured relative to the orifice plate, an armature comprising a magnetic flux-conducting material, an anchor spring secured to the armature, and a stiffening plate. The reed valve includes a tongue configured to selectively cover the bore of the orifice plate, and a first pivot location along the tongue. A second pivot location is defined along the anchor spring at an edge of the stiffening plate. The first and second pivot locations are spaced from each other. The armature is configured to selectively apply a force to the reed valve to pivot at least a portion of the tongue about the first pivot location.

The invention discloses an electric fuel pump for an automobile. The electric fuel pump for the automobile comprises a pump case, a pump head component, a back cover component, an electric motor component installed inside the pump case, and a pump body component. The pump head component comprises a pump cover made of a plastic material, an anode insertion piece and a cathode insertion piece that are fixed on the pump cover. The anode insertion piece and the cathode insertion piece run through the upper end face and the lower end face of the pump cover, wherein a sealing ring is fixedly sleeved on the lower-half periphery of the connected portion among the anode insertion piece, the cathode insertion piece and the pump cover, with the lower end of the sealing ring being away from the lower end face of the pump cover by a certain distance. The anode insertion piece, the cathode insertion piece, the sealing ring and the pump cover are integrally injection molded. With the electric fuel pump for the automobile, the problem of leaking the fuel inside the fuel pump from the surfaces of the anode insertion piece and the cathode insertion piece can be thoroughly solved, thereby ensuring the safety of driving.

The invention relates to an MCB circuit breaker wiring terminal protection device. The device comprises a base (1), a cover cap (2), a rotary base (3) and two protective covers (4), the base (1) is ofa circular tube structure, and two fulcrum bolts (12) are symmetrically arranged on the end face of the base (1). The rotating base (3) is of a round cover structure, and two transmission plug pins (31) are symmetrically arranged on the inner surface of the end face of the rotating base (3). The rotary base (3) is arranged in the cover cap (2), and circular through holes are formed in the front end surface and the rear end surface of the cover cap (2) and the end surface of the rotary base (3); the round through hole in the rear end face of the cover cap (2) is hooped on the base (1), a fixing hole (41) and a limiting groove (42) are correspondingly formed in the upper surface and the lower surface of each protective cover (4), and the fulcrum plug pin (11) and the transmission plug pin (31) are inserted into the limiting grooves (42) and the fixing holes (41) of the protective covers (4) respectively. Compared with the prior art, the device has the advantages of simple operation, high protection level and the like.

A door system for a vacuum train is shown which comprises at least one vehicle (3) with at least one vehicle door (2) and a track for the vehicle comprising at least one evacuated pipe (10) and/or tunnel for the vehicle and guiding and propelling elements for the vehicle within the pipe and/or tunnel. The track comprises at least one station (20) outside of said pipe and/or tunnel with at least one station door (4) being arranged within the wall of the pipe and/or tunnel to selectively close and open the station towards the pipe and/or tunnel, the vehicle door and the station door being arranged to be in a corresponding position when the vehicle is at rest at the station, so that persons can leave or enter the vehicle when the vehicle door and the station door are open at the rest position of the vehicle. And the door system comprises at least one inflatable and deflatable ring shaped seal (22) which surrounds both doors when the doors are in their corresponding position and which seals in its inflated position both doors against the vacuum within the pipes and/or tunnels by filling the gap between the vehicle outer surface and the pipe and/or tunnel wall at the station and which does not fill the gap when being in its deflated state. Thereby the amount of air to be removed between vehicle and station before the corresponding doors can be opened will be minimized, allowing to minimize the time until the doors can be opened.

The invention discloses a nanofiltration industrial waste water integrated treatment system. The system comprises a barrel. A filtering mechanism comprises a mounting top plate, a filter drum and a mounting bottom plate. The filter drum is arranged between the mounting top plate and the mounting bottom plate. The filter drum comprises multiple struts and multiple nanofiltration membrane assemblies. One axial ends of the struts are fixed to the mounting bottom plate, and the other axial ends of the struts are detachably connected to the lower plate surface of the mounting top plate. Mounting grooves are formed in the side walls of the struts in the axial direction, and the nanofiltration membrane assemblies are clamped into the mounting grooves of two adjacent struts through clamping platesto be fixed. The mounting top plate is clamped at the open end of the barrel, and the filter drum is arranged in the barrel. A stirring mechanism comprises a mounting base plate and a stirring shaft,the stirring shaft penetrates through the mounting top plate in a clearance fit mode to stretch into the filter drum, and stirring blades are arranged on the shaft section, located in the filter drum, of the stirring shaft. The filtering mechanism and the stirring mechanism are arranged in the barrel at the same time and act jointly, blockage in the filter drum can be effectively avoided, and thefiltering effect is further improved.

The invention discloses an improved hydraulic cylinder. The hydraulic cylinder comprises a cylinder body and a piston rod; a piston is fixed at the tail end of the piston rod, a groove is formed in the side wall of the piston, and a first sealing ring is arranged in the groove; the first sealing ring comprises clamping pin parts at the two ends, a first rubber part is fixedly connected to the inner side of each clamping pin part, and a second rubber part is fixedly connected between the two first rubber parts; clamping grooves are formed in the side walls of the groove, an inner sleeve is movably clamped in each clamping groove through a rubber hoop, the clamping pin parts are fixedly connected with the inner sleeves, a limiting groove is formed in the inner side of each clamping groove, and a limiting pin which is selectively inserted into the corresponding limiting groove is fixed on each inner sleeve; and the inner side of each first rubber part is fixedly connected with a first flexible supporting rod, the inner side of the second rubber part is fixedly connected with a second flexible supporting rod, the second flexible supporting rod is connected with the groove, and the first flexible supporting rods are connected to the side wall of the second flexible supporting rod. According to the improved hydraulic cylinder, the defects in the prior art can be overcome, and the service life of an oil seal structure of the hydraulic cylinder is prolonged.

The invention relates to the technical field of metering instrument protection safety, in particular to a reliably-sealed metering instrument shell. The reliably-sealed metering instrument shell comprises a first shell and a second shell which is matched with the first shell, wherein a sealing part is arranged between the first shell and the second shell; the first shell or the second shell is provided with a bump matched with the sealing assembly; the first shell is a base meter shell; the second shell is a bottom plate or a side plate; and the bottom plate or the side plate is provided witha bump matched with the sealing part. Through adoption of the reliably-sealed metering instrument shell, good positioning for the sealing part is realized, and the sealing effect is achieved. Meanwhile, the edge periphery of the bump can hermetically contacted with the inner wall of the shell, so that the sealing area is enlarged, and the sealing effect is improved further.

The invention relates to a seal ring on a cover plate component, the cover plate component, an upper cover component and an electric appliance. The seal ring comprises a mounting portion and a sealingportion which are integrally connected; the vertical section of the mounting portion is represented into an inverted L-shaped form and the mounting portion is arranged on one side face of the cover plate component in a sealed mode; the sealing portion extends from one side face of the cover plate component along a direction back away from the cover plate component; the sealing portion abuts against an opening edge of a cookware and the side face, which is located within the cookware, of the sealing portion is a water diversion inclined plane when the cover plate component is buckled on the cookware; and the end, away from the cover plate component, of the water diversion inclined plane is located below or at the outer side of the end, close to the cover plate component, of the water diversion inclined plane. According to the seal ring provided by the invention, by arranging the water diversion inclined plane, condensed water can slide down from the seal ring in one hand, so that the seal ring can be kept under a water-free state, and a phenomenon of water accumulation in the seal ring due to vapor condensation in a cooking process can be prevented; and in the other hand, soup or rice grains, which splash on the water diversion inclined plane, can be conveniently cleaned.