36results about How to "Reduce leakage area" patented technology

The invention is a smoke insulating damper-throttle relating to a insulating block used for smoke switch and insulation in smoke desulphurizing system, it can realize insulation to smoke with simple and reliable structure, the throttle includes a valve of a closed structure valve board with a sealed cavity, a middle media control switching valve, a electric executing mechanism; the electric executing mechanism, the middle media control switching valve are at two sides of the valve, the self-closed structure valve board with sealed cavity is in the valve, one end is connected to the outer electric executing mechanism, another end is connected to the outer middle media control switching valve, the middle media control switching valve and the hollow part of the self-closed structure valve board are connected; the valve board can be driven by the electric executing mechanism to rotate 90 degrees, at the same time, it drives the middle media control switch valve to rotate 90 degrees. It integrates the middle media control switch system and the valve board control, it guarantees the safety and reliability of the seal.

The invention discloses a water-saving anti-blocking water pump, comprising a water pump housing and a main water pipe installed in the water pump housing; one end of the water pump housing is provided with a lifting handle, and the other end of the water pump housing is connected with water inlet pipes; water absorption pump heads are installed at the other ends of the water inlet pipes; the cylinder surface of the water pump housing is connected with a plurality of water outlet pipes; the ends, fixed in the water pump housing, of the water inlet pipes are connected with the main water pipe; the ends, fixed in the water pump housing, of the water outlet pipes are connected with the main water pipe; the main water pipe sleeves a filter cartridge, and the filter cartridge is fitted between the main water pipe and the water outlet pipes; movable hoops sleeve the other ends of the water outlet pipes, recycling pipes are connected with the movable hoops, and the other ends of the recycling pipes are connected with the water inlet pipes. The water-saving anti-blocking water pump effectively solves the problem of impurity blockage by means of multilayer filtering; furthermore, the recycling pipes are installed at the connection parts of the water outlet pipes and the water inlet pipes, so that the large-area leakage of water is prevented, and the aims of reducing water resource waste and increasing water pumping efficiency are further achieved.

The invention provides a fiber enhanced type wet paving/pre-paving waterproof coil material and a special construction method of the fiber enhanced type wet paving/pre-paving waterproof coil material for water prevention of an underground engineering bottom plate. The waterproof coil material comprises a fiber enhancing layer, an upper adhesive layer, a tread layer, a lower adhesive layer and an isolating membrane. The construction method comprises the following steps: (1) constructing a concrete cushion layer of the underground engineering bottom plate; (2) wetly paving a fiber enhanced type wet paving/pre-paving waterproof coil material; and (3) bundling bottom plate structure steel bars on the fiber enhancing layer and pouring bottom plate structure concrete. According to the fiber enhanced type wet paving/pre-paving waterproof coil material and the construction method, wet paving and pre-paving construction manners in a waterproof coil material construction process are combined together; a waterproof structure is simple, and waterproof and safe dual guarantees are realized; and the probability of water leakage is effectively reduced.

The invention discloses a pneumatic elastic sealing device and a gas turbine engine. The pneumatic elastic sealing device comprises a first outer ring, a second outer ring, a positioning component anda sealing component. The first outer ring and the second outer ring are arranged oppositely, and an accommodating cavity is formed between the first outer ring and the second outer ring. The first outer ring is provided with an annular boss. The second outer ring is provided with an annular limiting groove. The positioning component is arranged on the second outer ring, extends towards the firstouter ring in the axial direction of the second outer ring and is at least partially located in the accommodating space, and the portion, located in the accommodating space, of the positioning component is called a guide section. The sealing component is arranged on the guide section. The gas turbine engine comprises the pneumatic elastic sealing device. According to the pneumatic elastic sealingdevice and the gas turbine engine, two layers of sealing pieces are connected in series, and fan-shaped notches of the two layers of sealing pieces are arranged in a staggered mode, so that the leakage area is greatly reduced, the sealing efficiency is improved, and installation is convenient.

The invention discloses a SCARA robot, comprising a first rotating arm and a base, the upper right side of the first rotating arm is connected to the base through a driving device one, a protective plate is installed on the upper side of the base, and the protective plate Intubation connector 1 and several cable connectors are respectively installed, the upper left side of the first rotating arm is connected to the second rotating arm through the driving device 2, and the second rotating arm is connected to the ball screw through the driving device 3, In addition, a lower protective cover is provided at the joint, and a transition plate is fixedly connected to the second arm, and a second intubation joint is installed on the transition plate, and an upper protective cover is connected to the transition plate, and the transition plate and Bellows are connected between the bases. The invention can effectively reduce the requirements of the SCARA on the installation environment; it can easily realize the rapid interchange between the top-mounted installation and the side-wall installation of the SCARA robot, and expand the use range of the same robot.

The invention provides a landfill type biogas generator, which belongs to the field of comprehensive utilization of agricultural wastes. The landfill type biogas generator is embedded in a soil layer,and comprises a barrel body and a barrel cover covering the barrel body, wherein an annular connecting seat is screwed into the barrel body, a rotating shaft is vertically arranged in the barrel body, the connecting seat sleeves the rotating shaft which is hollow, the upper end and the lower end of the rotating shaft are open and closed, respectively, the rotating shaft is rotatably connected with the barrel body through a bearing, a groove is formed in the bottom wall of the barrel body, the lower end of the rotating shaft extends out of the barrel body and is located in the groove, a gear motor is fixed in the groove and can drive the rotating shaft to rotate through a transmission mechanism, a seal is formed between the rotating shaft and the connecting seat through a sealing ring, anair inlet hole is formed in the side wall of the rotating shaft in a penetrating manner and is located below the connecting seat, the top of the barrel cover extends upward to form a straight tubularexhaust part, the upper end of the exhaust part protrudes out of the soil layer and is connected to a valve, and the lower end of the rotating shaft is fixedly provided and sleeved with an annular stirring blade. The landfill type biogas generator has the advantage of good safety.

The invention relates to a hazardous waste salt pyrolysis system and a pyrolysis process thereof, the hazardous waste salt pyrolysis system is used for removing organic impurities in hazardous waste salt, the pyrolysis system comprises a drying reactor (1), a crusher (2), a pyrolysis reactor (3), a cyclone dust collector (4), a spray tower (5), a demister (6), an incinerator (7) and a heat exchanger (8); a solid outlet of the drying reactor is connected with a solid inlet of the pyrolysis reactor through the crusher, and a gas outlet of the drying reactor is connected with a first inlet of the cyclone dust collector; the pyrolysis salt outlet (322) is connected with an inorganic matter impurity removal system (9), the pyrolysis gas outlet (321) is connected with a second inlet of the cyclone dust collector, and the heating flue gas outlet (302) is connected with a gas inlet of the drying reactor; an outlet of the cyclone dust collector is connected with an inlet of the heat exchanger through the spray tower, the demister and the incinerator, a flue gas outlet of the heat exchanger is connected with a heated flue gas inlet (303) of the pyrolysis reactor, and a steam outlet of the heat exchanger is connected with the inorganic matter impurity removal system.

The invention provides application of thrombospondin 1 (THBS-1) in preparation of a medicine for preventing and/or treating age-related macular degeneration (AMD), and belongs to the technical field of eye disease medicines. As the pathological process of the AMD comprises injury and death of retinal pigment epithelium (RPE), formation of choroidal neovascularization (CNV) and retinal inflammation, in-vitro cell experiments and in-vivo animal experiments are combined to verify the anti-inflammatory effect of the THBS-1 in experimental blue light induced retinal inflammation and verify the effect of the THBS-1 in inhibition of pathological neovascularization and the protection effect of retinal injury. Therefore, the invention provides the application of the THBS-1 in preparation of the medicine for preventing and/or treating the AMD.

The invention relates to the technical field of accessory devices of safety valves, in particular to a remote electromagnetic emergency cut-off device. The remote electromagnetic emergency cut-off device can realize a remote emergency cut-off function, is lower in cost and more convenient to manage. The remote electromagnetic emergency cut-off device includes a crane pipe, a connecting pipe and adischarge pipe, a first on-off valve is arranged at the input end of the crane pipe, the output end of the connecting pipe communicates with the input end of the first on-off valve, and the output endof the discharge pipe communicates with the input end of the connecting pipe. The remote electromagnetic emergency cut-off device further includes a hydraulic valve, a hand oil pump, a communicatingpipe, an electromagnetic valve and a hand-held remote control. The hand oil pump is provided with a rocker, the hydraulic valve is fixedly arranged on the connecting pipe, the hydraulic valve is provided with an oil delivery pipe, the output end of the hand oil pump communicates with the input end of the electromagnetic valve, the output end of the electromagnetic valve communicates with the inputend of the communicating pipe, the output end of the communicating pipe communicates with the input end of the oil delivery pipe, and the hand-held remote control is connected with the electromagnetic valve through an electrical signal.

The invention relates to a leakage test method of a polymerization kettle, and belongs to the technical field of chemical production. The leakage test method comprises the following steps ofS1, addinga monomer with the boiling point being -80 DEG C to 30 DEG C into the polymerization kettle; S2, injecting hot water into the polymerization kettle in the step S1, so that the monomer is heated to begasified, and the pressure in the polymerization kettle is increased; S3, observing a pressure value in the polymerization kettle, and stopping injecting the hot water when the pressure is increasedto 1 Mpa; S4, coating the joint of a kettle body and a pipeline flange and the joint of a stirring shaft and the kettle body with foam water, controlling the pressure in the polymerization kettle to be maintained for 10-15 minutes, and observing whether bubbles are generated or not; and S5, recovering the monomer in the polymerization kettle after detection is finished. The method has the beneficial effects that the detection time for leakage of the polymerization kettle can be greatly shortened, so that the utilization rate of the polymerization kettle is improved, and meanwhile, the production benefit of an enterprise is improved.

The invention provides a composite durable anti-static gas isolation system and a construction method, and solves the technical problems that in the prior art, only a gas isolation plate is adopted for blocking gas, the potential safety hazard that the gas escapes easily exists, and the operation risk of a gas tunnel is large. The system sequentially comprises a primary lining concrete structure doped with an airtight agent, an anti-static polyethylene closed-cell foam board, an isolation board and a secondary lining concrete structure doped with the airtight agent, wherein the primary liningconcrete structure doped with the airtight agent is arranged on one side close to the gas. According to the system, gas isolation, flame retardancy, anti-static property and excellent mechanical properties can be met, escape of the gas can be avoided as much as possible, and the safety of gas tunnel engineering operation is improved.