8results about How to "Protective seal" patented technology

The invention relates to the technical field of oil exploitation equipment, and discloses oil exploitation pressurization safety equipment which comprises a pressurization assembly, a driving assembly and a cleaning assembly, the pressurization assembly comprises two pressurization cylinder sleeves and a piston, a pressurization cavity is formed in the middle of the pressurization cylinder sleeves, and the pressurization cavity is of an open structure; the piston is installed between the pressurizing cavities of the two pressurizing cylinder sleeves in a sealed and sliding mode, when the piston conducts sliding pressurizing in one pressurizing cavity, negative pressure is synchronously formed in the other pressurizing cavity to suck a pressurizing medium, the driving assembly is connected with the piston, the driving assembly comprises a first lead screw, and the first lead screw is rotationally installed between the two pressurizing cavities. The first lead screw can drive the piston to slide, the cleaning assembly is connected with the piston, and the cleaning assembly can synchronously clean the inner wall of the pressurizing cylinder sleeve when the piston slides. According to the invention, the rotating speed can be effectively reduced, and the effects of reducing noise, vibration and abrasion are achieved.

The utility model discloses perforating equipment for fire-fighting engineering installation in the technical field of fire-fighting equipment processing, which comprises a box body, a supporting plate is arranged at the bottom of an inner cavity of the box body, fixing rods are fixedly connected to two sides of the bottom of the supporting plate, the bottoms of the fixing rods are fixedly connected with the inner wall of the box body, and connecting plates are fixedly connected to two sides of the top of the supporting plate. The surface of the connecting plate is in threaded connection with a bolt, one end of the bolt is movably connected with a clamping plate through a bearing, a dust collecting mechanism is arranged on the right side of the box, and the top of the inner cavity of the box is fixedly connected with a connecting block. According to the fire fighting equipment perforating device, the dust collecting pipe, the draught fan, the dust collecting box, the U-shaped block and the dustproof net are arranged, air in the box body can be driven to flow under the action of the dust collecting pipe, the draught fan, the dust collecting box, the U-shaped block and the dustproof net, and therefore dust generated when fire fighting equipment in the box body is perforated is collected in a centralized mode; and dust is prevented from drifting away along with air and being inhaled into the body of a worker.

The utility model provides a detachable sealing device. The detachable sealing device comprises a base installing and welding piece, an upper cover installing and welding piece and a plug-in box installing and welding piece. The beneficial effects of the utility model are that the structure design is reasonable, the subrack assembly welding member can be detached from the pedestal assembly welding member, and two-point fixation is adopted, which is firmer, more balanced and more uniform in stress than one-point fixation; and a spring mechanism is adopted, so that the problems of demagnetization, irreversible loss, small magnetic force and poor effect of the magnetism of a magnetic material when the maximum working temperature is exceeded are solved.

The utility model relates to pipeline maintenance and repair technical field, concretely discloses a kind of automatic extraction maintenance device of water in natural gas pipeline, including the shaft seat of being provided with flange, further including the leather bowl installed to the outside of flange, lip is opened in leather bowl side edge, and lip divides leather bowl side edge to form front lip and back lip, multiple guide members are rotationally arranged in lip. The utility model actively meets the sewage accumulated in front of natural gas pipeline through front lip, and the space of lip realizes the storage obstruction in front of back lip, so that sewage is not easy to penetrate from back lip to rear leather bowl, improve the use effect of entire pipe cleaner, by adjusting the roller deflection in the axis direction of leather bowl side edge, so that multiple rollers on leather bowl roll along one spiral direction, facilitate the spiral progression of pipe cleaner in natural gas pipeline, realize the change of leather bowl side edge direction, avoid the positioning of leather bowl side edge in some place always buried in sewage operation, and further protect the sealing of pipe cleaner.

This utility model discloses a sealing protective cover for a chemical centrifugal pump, including a sealing protective plate. The sealing protective plate is integrally stamped and formed. The sealing protective plate has mounting holes, a sealing pipeline through hole, and an observation hole. The sealing protective plate is installed on both sides of the bearing housing. The sealing protective plate and the bearing housing are detachably connected by screws. The sealing protective plate has a bending angle. This utility model solves the problems of exposed rotating parts at the sealing point, insufficient rigidity, poor pressure bearing capacity, difficult disassembly, and inconvenient equipment maintenance in the prior art.

The invention discloses a high-sealing-performance automobile high-speed connector, and relates to the technical field of connectors. The device specifically comprises a cable, the circumference of the cable is clamped with a handle locking mechanism, two ends of the cable are fixedly connected with connecting seats respectively, one ends of the two connecting seats are connected with a plug and a socket sleeve through threads, one side of the socket sleeve is connected with a sealing cover through a hinge piece, and an inner ring of the sealing cover is clamped with a port of the socket sleeve. The hinge piece comprises a torsion spring, a rotating shaft, a mounting seat and a fixing groove, and the rotating shaft is fixedly connected to one side of the socket sleeve. When the plug is pulled out of the socket, the arc-shaped metal sheet at the end of the Y-shaped metal sheet is reset, the screw on one side of the Y-shaped metal sheet drives the rotating plate to reset, the rotating plate is in a horizontal state at the moment, jacks in the two sides of the center of the first clamping seat are closed, and sealing of the Y-shaped metal sheet in the center of the second clamping seat and a metal clamping sheet on the back face of the second clamping seat is achieved. And the effect of high sealing performance is achieved, and the safety of metal pieces in the second clamping base is protected.

The utility model discloses a kind of automobile wiring harness waterproof structures, including wiring harness main stem, branch wiring harness, elastic inner liner and outer sheath, elastic inner liner is covered in the outer periphery of wiring harness main stem and branch wiring harness, and its inner wall is attached with the surface of wiring harness main stem, branch wiring harness;Outer sheath coaxial sleeve is arranged in the outside of elastic inner liner, and sealing cavity is formed between the two, the radial thickness of elastic inner liner is greater than the radial width of sealing cavity in natural state, so that elastic inner liner is continuously in axial compression state, the both ends of outer sheath are radially inwardly extended and set with limit flange, for constrain the axial displacement of elastic inner liner, elastic inner liner is integrally formed as Y-shaped bifurcation structure, and its bifurcation inner cavity is matched with the profile of branch wiring harness;The utility model is through multilayer, dynamic self-adapting sealing structure, fundamentally solve the problem that traditional protection is in long-term dynamic environment, especially branch node place sealing is unreliable, moisture is easily penetrated and accumulated.

The invention provides a fan-shaped glasses valve plate disengaging structure which comprises a left valve body, a valve plate and a lead screw, two ejector rod mechanisms are arranged on the left valve body, a base plate is arranged on the side, close to the left valve body, of a guide rail of the valve plate, and a clamping ring is arranged on the lead screw on the other side of the valve plate. The ejector rod mechanism, the base plate and the clamping ring are utilized, the valve plate is forcibly disengaged when the valve plate acts, the ejector rod mechanism and the clamping ring limit the valve plate, the valve plate is prevented from shaking left and right, and therefore the effect of protecting the rubber sealing ring is achieved.