106results about How to "Watertight" patented technology

The invention relates to a magnetic electric connector which comprises a plug and a socket, wherein the shell of the socket is internally provided with an alternating current electromagnetic relay and a movable insulating plate, and a return mechanism is arranged on the movable insulating plate; a socket touch is arranged on a front panel of the shell of the socket, a movable contact and a socket magnet are arranged on the movable insulating plate, and the movable contact is electrically connected with the alternating current electromagnetic relay; a movable magnetic block is penetrated and connected to the movable insulating plate, and a microswitch for starting is fixed on the movable insulating plate; a front panel of the shell of the plug is provided with a plug contact opposite to the position of the socket contact; the shell of the plug is internally provided with a fixed magnetic block and a plug magnet; the fixed magnetic block is opposite to the position of the movable magnetic block in the socket, and the polarities of the opposite ends are the same; and the plug magnet is opposite to the position of the socket magnet, and the polarities of the opposite ends are opposite. The invention has convenient operation, safe use and good water proofing.

The invention provides root-resisting waterproof concrete and a green roof structure. The concrete comprises the following components: 12-26% of cement, 23.0-25.0% of sand, 4.0-5.0% of water, 42.0-48.0% of gravel, 0.034-0.039% of a water reducer, 0.085-0.104% of an active catalyst, 4.0-7.0% of a fiber, 1.0-3.0% of hydrophobic zeolite and 0.34-0.65% of a root-resisting agent. The green roof structure comprises a structural layer, an insulating layer, a protecting layer, a water discharging layer, a filtering layer and a planting layer in sequence from bottom to top, wherein the protecting layer is made of the concrete. The concrete provided by the invention has root-resisting, waterproof and anti-cracking functions, and is long in service life and low in production cost; the green roof structure is simple, convenient to overhaul, smooth in water discharging, and lower in roof bearing pressure.

The invention discloses a novel ocean iridium-satellite GPS beacon. A power control layer comprises a battery charging and discharging protective circuit, a 5V power voltage stabilizing circuit and a 3.3V power voltage stabilizing circuit; a circuit mainboard layer comprises an MCU circuit, a reset circuit, a high-speed crystal oscillator, a low-speed crystal oscillator, a JTAG debugging interface circuit, an iridium satellite module circuit, a Zigbee module circuit, an analog switch circuit, an AD voltage collection circuit and a water level monitoring circuit; a switch control layer comprises a solar charging and discharging controller, an LED control circuit and a water density knob switch; an antenna positioning layer comprises a power switch, an iridium satellite antenna, a Zigbee antenna, a GPS module, a water outlet detection switch, a charging port and a reset button; and a solar cell panel and LED layer comprises a solar cell panel and LED lamps. Functions including satellite positioning, wireless positioning, LED warning, real-time water outlet monitoring, charging of the solar cell panel and real-time electric quantity display are integrated in the novel ocean iridium-satellite GPS beacon.

The invention relates to a solar cell assembly used for floating on a water surface. The solar cell assembly comprises a buoyancy material, a transparent sealing layer, a connection device, a stable ring, solar cells, a junction box, a waterproof sealing ring and conduction lines, the solar cells, the connection device, the junction box, the waterproof sealing ring and the stable ring are installed on the positions set on the buoyancy material, the solar cells are connected together through the connection lines according to requirements and are connected with the inside of the junction box, the conduction lines outputting currents in the junction box penetrate through the waterproof sealing ring, and the outer surface of the buoyancy material is coated with the transparent sealing layer of a set thickness so that all the components can be integrated together to form the solar cell assembly of an airtight core structure. The solar cell assembly used for floating on the water surface has set buoyancy and strength and has set water tightness; meanwhile, all the components are integrated together; the solar cell assembly can float on the water surface, can also prevent water permeation and has an anti-resonance effect.

The invention belongs to the technical field of asphalt pavement crack repairing, in particular to an asphalt pavement crack repairing binder and a highway crack repairing adhesive tape prepared by the binder. The asphalt pavement crack repairing binder of the invention takes asphalt matrix, rubber powder, thermoplastic elastomer, cryogenic regulator, high temperature regulator, filler and hardness regulator as raw materials. The prepared asphalt pavement crack repairing binder has good adhesion, high-temperature flowing resistance and low-temperature cracking resistance, and the low-temperature resistance can resist 35 DEG C cold environment.

A compression sprayer comprises a pesticide tank which is provided with a manual pneumatic pump. A handle is arranged on the manual pneumatic pump and a suction pipe is arranged in the pesticide tank. The suction tube is connected with a leather hose and the leather hose is connected with a spray boom. The spray boom is connected with a sprinkler. The invention is characterized in that an angle adjustment part is arranged between the sprinkler and the spray boom; a notch is cut in a base of the pesticide tank; a foot board is arranged in a notch; and the notch is fixed by the foot board and nuts. The technical schemes of the invention are that the angle adjustment part is arranged between the sprinkler and the spray boom, which can freely adjust the angle of the sprinkler while spraying a pesticide, thus being able to spray directly forwards, or spray to the left or the right sides, and spray the pesticide to the leaf surface, the stem and the root, etc., of the crops according to different requirements and has a good spray effect. In addition, the foot board is arranged on the base of the pesticide tank that can be turned to the bottom surface of the tank while being out of service, and be turned out while pumping, so that while pumping with hands, the foot board can be trampled to prevent the tank from moving. The invention uses two hands to pump, thus being convenient and saving labor.

The invention relates to an asphalt material for a road as well as a preparation method and a preparation device of the asphalt material. The asphalt material comprises the following ingredients through being metered by weight percentage: 1 to 20 percent of natural rock asphalt and the rest of substrate asphalt. The preparation method of the asphalt material comprises the following steps that two kinds of asphalt are weighed according to the weight percentage; the substrate asphalt is filled in a temperature rise tank, and the temperature is raised to 165 DEG C; the substrate asphalt in the temperature rise tank is pumped into a 160-165-DEG C stirring tank by a conveying pump; the natural rock asphalt is added into the stirring tank to be mixed and stirred for 10 minutes; mixed materials are pumped into a metering tank, after the weight of the mixed materials is metered, the mixed materials are added into a ball grinder, the temperature of the ball grinder reaches 165 DEG C, in addition, the temperature is maintained at 165 DEG C, a grinding device of the ball grinder is opened, and the rotating speed of the grinding device is gradually regulated to 400 to 500 turns / minute; and the grinding is carried out for 10 to 30 minutes, and the materials are discharged. The bonding capability of the prepared asphalt and stone is high, the elasticity is good, the stretching quantity is great, the asphalt material is not soluble in water, no water seeps, the flowing during high temperature and the brittle fracture during low temperature are avoided, the durability is good, and the service life is long.

The invention relates to premixed polyether polyol, polyurethane raw material composition and polyurethane foam for a polyurethane imitated wood product and a preparation method of the polyurethane foam. The premixed polyether polyol is prepared from components in parts by weight as follows: 50-60 parts of first polyether polyol, 35-45 parts of second polyether polyol, 5-10 parts of third polyether polyol, 2-3 parts of a foam stabilizer, 1.5-2.5 parts of a catalyst and 0.5-0.7 parts of a foaming agent, wherein viscosity of first polyether polyol is 3200 plus or minus 500 mPa.s and hydroxyl value is 425-455 mgKOH / g when first polyether polyol is at 25 DEG C; viscosity of second polyether polyol is 1500 plus or minus 500 mPa.s and hydroxyl value is 400-460 mgKOH / g when second polyether polyol is at 25 DEG C; viscosity of third polyether polyol is 500 plus or minus 100 mPa.s and hydroxyl value is 54.5-57.5 mgKOH / g when third polyether polyol is at 25 DEG C. The polyurethane imitated woodproduct prepared from premixed polyether polyol has the advantages of being high in toughness, bendable and suitable for dome, arc-shaped furniture / wall decoration and the like.

The present invention discloses composite flexible material waterproofing membrane. A base layer is formed by full glass fiber cloth, a surface layer is formed by strong pressurizing rubber mixture which is acid and alkali resistant and anti-aging on the full glass fiber cloth under the high temperature and the high pressure, the base layer and the surface layer are compounded into a cloth adhering rubber waterproof plate, blank glass fiber cloth whose width is 6 to 10 cm and whose thickness is 0.9 mm is arranged along the surrounding, the flexible cloth adhering rubber waterproof plate is laid on a roof or on a cellar base, the neighboring blank glass fiber cloth of two parallel cloth adhering rubber waterproof plates is overlapped together and is coated with water insoluble power to be rolled and adhered into a whole. The present invention has the advantages that the present invention can bear the deformation of the building without being damaged; the bearing strength is big, rupture is not existed, the weatherability is good, the flexility is good, and the usage is convenient; the cost is low and the present invention is suitable for being popularized and applied.

The invention discloses a heat tube type solar central hot water supply system. The heat tube type solar central hot water supply system consists of a heat collector, a hot water storage tank, a constant-temperature water tank, a pump station, a controller, a heat exchanger, a gas-fired boiler and a pipeline and is characterized in that the heat collector is a heat tube type heat collector in-line-arranged array, the hot water storage tank and the constant-temperature water tank are pressure-bearing water tanks, and the heat exchanger is a plate heat exchanger. By means of the design and model selection, the heat tube type solar central hot water supply system has the advantages of being high in heat transfer efficiency, constant in temperature and pressure and free of tube explosion and water leakage, saves energy and is efficient and safe.

The invention belongs to the technical field of polyurethane and specifically relates to a preparation method of a polyurethane heating radiator. The preparation method of the polyurethane heating radiator comprises the following steps: uniformly mixing polyether polyol A and polyether polyol B, heating, dehydrating under high vacuum, cooling, adding diphenylmethane diisocyanate, uniformly stirring, heating and reacting, sampling and testing until mass content of isocyanate is 9-15% so as to obtain a prepolymer A component; uniformly mixing a chain extender and a tin catalyst to obtain a B component; uniformly mixing the A component and the B component, pouring the mixture into a mold, reacting to obtain a test piece, and vulcanizing the test piece to obtain a finished product. The prepared polyurethane heating radiator has good water resistance, is resistant to water seepage, is anti-rust, is not easy to block, has high hardness, is stretch-proof, is tear resistant, has high temperature resistance, will not deform, has stable physical properties, has more excellent heat dissipation performance than a metal product and is light. Production cost of the heating radiator is low. The preparation method is simple and easy to operate, and is easy to realize.

The invention discloses a bridge drain pipe construction installation technology. The bridge drain pipe construction installation technology comprises the steps that a drain pipe hole is buried through a PVC pipe to ensure that the pre-buried hole is perpendicular; concrete pouring is conducted on box girders around the PVC pipe; a drain pipe is fixedly installed after the PVC pipe is removed through chiseling operation; the periphery of the pipe wall of the drain pipe and an installation groove are blocked off through a contraction-free epoxy grouting material. According to the bridge drain pipe construction installation technology, the situations that the drain pipe is installed perpendicularly, and a drain perforated strainer is horizontal are guaranteed, and comfort of vehicle travelling is ensured; the contraction-free epoxy grouting material adopted by the bridge drain pipe construction installation technology is proper in viscosity, and has good filling performance, and pouring construction can be easy; various kinds of padding of the bridge drain pipe construction installation technology can be uniformly distributed in epoxy resin through matching in proper proportions, and have good filling and bonding effects; the contraction-free epoxy grouting material is applicable to construction in various complex environments, and has excellent acid and alkali resistance performance, water accumulation and water seepage cannot happen after grouting construction is accomplished, blocking is firm and dense, and compressive strength is high.

A novel solar biogas tank belongs to a methane generator technology field. The aim is to provide a novel solar biogas tank having a good sealing performance, a rapid fermentation, a great yield, a simple structure and a convenient operation and usage. The technology scheme is that the tank body is globosity formed by connecting an upper and lower hemispheres (3, 6) through a flange (5); two sides of the lower hemisphere centre point exterior of the tank are provided with an axis orchid (7) matching with a sliding bearing (10) arranged on an axis seat (8) movably. The tank not only has good air tightness non water penetration, and is air-tight, corrosion resistant and anti-aging, also the spherical tank is in a swinging status with the action of the natural wind force, such that the fermentation liquor inside the spherical tank may be agitated and fermented sufficiently; at the same time, the solar light thermal is capable of being transformed and radiated into the spherical tank, thus the fermentation liquor obtains a higher biogas fermentation temperature, and a larger yield of biogas is obtained in a short time without manually stirring or other stirring mechanism.

The invention belongs to the technical field of underwater engineering technology equipment, and relates to an electric heating warm keeping diving suit. The electric heating warm keeping diving suitis composed of an upper clothes part, a lower clothes part and an electric heating system, an ordinary light-diving dry diving suit is taken as a basic, a graphene-magnesium seawater battery or a lithium battery is taken as a power supply, a graphene flexible electrothermal film is taken as an electric heating element, thus a diver does not need to wear any cold preventing and warm keeping clotheswhen diving in cold waters, warm keeping is provided for the diver through electric heating, thus the diver can continuously stay for more than 4 hours in low temperature underwater, the underwater operation efficiency is greatly improved, damages on human body by low temperature is avoided, the situation of bloated wearing when underwater operation is conducted is eliminated, thus moving of thediver underwater is flexible, reachability of underwater operation is greatly improved, the defects of complex wearing, poor warm keeping effect, bloated posture, clumsy underwater movement and shortunderwater staying time in the prior art are effectively overcome, and the electric heating warm keeping diving suit has the advantages of fast and convenient wearing, reliable using, good warm keeping effect, flexible underwater movement and the like.

The invention discloses a wallboard provided with a greening planting system and the greening planting system installed on the wallboard. The wallboard provided with the greening planting system comprises a board body, limiting supports and an isolation belt, one end of each limiting support is arranged on an outer surface of the board body, the other end of each limiting support is connected with the isolation belt, and the board body, the limiting supports and the isolation belt form a groove-shaped accommodation part; two adjacent limiting supports constitute the top and the bottom of the accommodation part respectively, the top and the bottom and the isolation belt connected with the top and the bottom constitute an opening of the accommodation part, and the accommodation parts are formed at the outer surface of the board body, and are placed in the length direction of the board body. The wallboard provided with the greening planting system solves the problems that in the prior art, the city greening land is limited, the stereo greening construction is big in difficulty, the cost is high, the landscape effect is not so ideal, plants are short in life, and the maintenance cost is high.

The invention relates to an intelligent ultrasonic cleaning system and method for an air distribution pipeline. The system comprises a heat recovery fresh air machine, an air pipe closing valve, an air pipe, an air pipe heating, an adjustable exterior wall shutter, an intake air filter, an outdoor air quality sensor, an outdoor temperature sensor, an air conditioning board, a drainage exit, a heating water supply pipe, a heating water return pipe, an exhaust outlet, a power supply and an ultrasonic generator, an ultrasonic vibration submarine harbor, an ultrasonic vibration submarine, a closedconnector, a water-escape electrically operated valve, a water escape pipe, an ultrasonic transmission, power supply and signal line, a system controller and a water leakage sensor. The invention also relates to the intelligent ultrasonic cleaning method for the air distribution pipeline. The effect of water cleaning and cleaning liquid cleaning of the system and the method is far between than that of dry cleaning.

The invention discloses an electromagnetic shielding structure of a lighting window of a lightweight square cabin and relates to the technical field of square cabins. The electromagnetic shielding structure of the lighting window of the lightweight square cabin comprises an outer sealed window and an inner sealed window; the outer sealed window comprises an outer window frame, toughened glass, a water sealing rubber strip and a wire mesh layer; the wire mesh layer is electrically communicated with the outer skin of a wallboard through the outer window frame; the inner sealed window comprises a copper plate frame, a pressing plate frame, a shock-reducing rubber strip and shielding glass; a nickel-plated mesh is electrically communicated with the inner skin of the wallboard through the copper plate frame, and therefore a two-layer telescopic Faraday electromagnetic cage. The electromagnetic shielding structure disclosed by the invention especially aims at the lightweight square cabin that an aluminum alloy plate of 0.5-1mm is adopted by the inner skin and the outer skin, is capable of performing electric communicating on the inner skin and the outer skin, can fully meets the shielding requirement of being greater than 40db within a frequency band range of 100KHz-10GHz in the military standard requirement, and is capable of ensuring water tightness, gas tightness, heat retaining property and light transmission of the cabin body at the lighting window.

The invention provides a filter element device with a water stop assembly. The filter element device comprises a shell, a filter material and the water stop assembly. The filter material is arranged in a filter cavity of the shell to form a filter flow channel; the water stop assembly is mounted in the filter cavity, a water blocking part of the water stop assembly is connected to a water distributor through a rotating shaft structure, the water distributor is provided with a water distributor butt-joint opening, the water blocking part is provided with a water blocking part butt-joint opening, and the water blocking part and the water distributor rotate relatively to control the water distributor butt-joint opening and the water blocking part butt-joint opening to be connected in a butt-joint mode or staggered. Based on the structure, the water stop assembly can prevent residual water in the filter cavity to flow out in the dismounting process of the filter element device; in addition, the mode of side-face water passing or blocking is adopted by the water stop assembly, so that the assembling structure is simplified, smoothness of relative rotation of the water distributor and the water blocking part is improved, the setback feel during rotation is lowered, and good control hand feel is achieved. The invention further provides a water purifier comprising the filter element device. The filter element device has the advantages of non water leakage, non water crossing, convenient filter element replacement and the like.

The invention discloses a nutria breeding device, and belongs to the technical field of artificial breeding of nutria. The nutria breeding device comprises a plurality of breeding cages (1), a support (2), a humidity sensor (3), a spraying device (4), an excrement bearing plate (5), a fodder disc (6), a water supply pipe and a blowdown pipe (7). The breeding device is reasonable in structural design and durable, the growth environment of the nutria is effectively improved, the breeding safety is improved, the production efficiency is improved, and the labor cost is reduced.

The invention relates to a cast iron type water-cooling furnace cover of a refining furnace, which adopts a casting instead of a welding part. More than one water-cooling pipe is embedded into the furnace cover, and each water-cooling pipe is provided with a water inlet and a water outlet. A plurality of mud hanging gears are embedded on the working surface of the furnace cover. The mud hanging gears are in a shape like the Chinese character da, i.e. the hanging parts are embedded into the working surface of the furnace cover, and the hung gear parts are exposed outside the working surface ofthe furnace cover. The cast iron type water-cooling furnace cover of the refining furnace can be divided into an integral type or a split type according to the structure of the furnace cover, and thesplit type furnace covers are spliced together for use. Steel pipes in various forms are embedded into the furnace cover according to the structures of different furnace covers, a certain number of mud hanging gears are embedded on the working surface of the furnace cover, and refractory materials with certain thickness are sintered at the mud hanging gear parts or a certain number of refractory bricks are embedded on the working surface. The cast iron type water-cooling furnace cover can be adapted to the complicated and severe working conditions of the refining furnace and has the advantagesof no water leakage and cracking, difficult deformation and slag adhesion, long service life, and the like.

The present invention provides a pipeline hydrophone stuffing box and a usage method thereof. A diversion sheath that can be spliced wraps a hydrophone, so that a gap between the head of the hydrophone and a pipeline wall can be filled. A filling backing plate and a filling pressure cover are both circumferential split structures, after a cable is laid, the spliced diversion sheath, the filling backing plate and the filling pressure cover wrap the hydrophone, and finally the hydrophone is installed in a stuffing box base, so that the hydrophone can be installed without conventionally penetrating a tail cable of the hydrophone out of the stuffing box in advance from the interior of a pipeline, and finally laying the more disordered cable penetrating out of the stuffing box. The pipeline hydrophone stuffing box and the usage method thereof are suitable for the conditions that the head of the hydrophone is larger, and the installation is inconvenient.

The invention discloses a socket and spigot telescopic type closing joint device. The socket and spigot telescopic type closing joint device comprises a socket tube, a socket tube connecting ring, a socket end head ring, a spigot tube, a spigot tube connecting ring, an outer reinforcing ring, an inner reinforcing ring and a plurality of limiting screws, wherein the socket tube connecting ring anda socket ring are fixedly arranged on the tube hole in the outer end of the socket tube; the spigot tube connecting ring and a spigot ring are fixedly arranged on the tube hole in the outer end of thespigot tube separately; the inner reinforcing ring and a spigot part are fixedly arranged on the tube hole in the inner end of the spigot tube separately; the tube hole in the inner end of the spigottube is inserted into the tube hole in the inner end of the spigot tube; a plurality of screw holes are separately formed in the spigot tube connecting ring and the outer reinforcing ring; and the two ends of each limiting screw are fixedly arranged in the screw holes of the socket tube connecting ring and the outer reinforcing ring though limiting nuts separately. The socket and spigot telescopic type closing joint device is wide in range of application, and can avoid electric-welding open fire, reduces a safety accident and saves first-aid repair time in first-aid construction of water conveying buried pipelines, oil conveying buried pipelines and gas conveying buried pipelines.

The invention relates to a low-cost marsh gas tank. The low-cost marsh gas tank is characterized in that: the weight percent of 5 dry materials of clay or sandy soil, limestone powder, iron ore powder, 425-level acid cement and solid sodium silicate is sequentially 60 to 70%, 2 to 5%, 1 to 3%, 15 to 25% and 5 to 10%; the 5 dry materials are mixed and ground to lower than 100 meshes, are poured into a stirring machine, and are then stirred immediately after water (the weight of the water is 1.0 to 1.5 times larger than that of the dry materials) is added till the state of sticky paste; the dry materials can be used after about 5 minutes and can be built or plastered; after the dry materials are plastered, 10 meshes of glass fiber cloth are coated and plastered at the finial layer; the effects of firmness and duration are good, and the service life is up to more than 20 years. Under the condition that the volume is the same, the manufacturing cost of the marsh gas tank in the invention is 400 Yuan, but the manufacturing cost of the present marsh gas tank is 1,000 Yuan; therefore, about 600 Yuan can be saved for each marsh gas tank.

The invention relates to a pure wood energy-saving door-window system, and discloses a pure wood energy-saving lifting window. The energy-saving lifting window consists of a window frame, an inner window sash and an outer window sash, wherein the inside and the outside of the window frame are provided with a slide rail respectively; the inner window sash and the outer window sash are respectively arranged on the slide rails inside and outside through a balanced lifting device; the window frame consists of a left vertical wooden frame, a right vertical wooden frame, an upper transverse wooden frame and a lower transverse wooden frame; the left vertical frame and the upper vertical frame respectively consist of three outer wooden frames; the middle of the second outer wooden frame is provided with a decorative wooden closing board; the outside of the upper transverse frame is provided with an upper frame closing board; the upper transverse frame above the inner window sash is provided with an upper frame occulting bar; the upper transverse frame above the outer window sash is provided with a cushion pad; the inside of the lower transverse frame is provided with a lower frame closing board; the upper surface of the lower transverse frame is provided with an apron slope which is high in internal and low in external; and the apron slope is provided with an aluminum apron plate. The overall pure wood energy-saving lifting window is mainly made of wood, and has the characteristics of heat preservation, energy conservation, good tightness, beautiful appearance and practicability.

The invention provides a waterproof cable core water blocking sealant. 100 parts of methyl vinyl silicone rubber, 10-25 parts of fumed silica, 25-30 parts of calcium hydrogen carbonate, 5-10 parts of rutile type titanium dioxide, 1-5 parts of zinc stearate and 5-10 parts of anilmo-methyl triethoxy silane are mechanically stirred for 20-30min at the temperature of 25 DEG C according to weight ratio, and 0.5-1 part of mixture of dibutyltin dilaurate curing agents and dibutyl phthalate is added to form the finished product sealant. The sealant is free from pollution, convenient to use, safe and reliable.

The invention discloses a waterproof light-oxygen catalyzing deodorizing type waste gas treatment device. The waterproof waste gas treatment device is characterized by comprising a spraying unit (2) connected with a smoke inlet (1), wherein the top end of the spraying unit (2) is connected with an air inlet of a light-oxygen catalyzing deodorizing unit (4) by a first air duct (3); an air outlet of the light-oxygen catalyzing deodorizing unit (4) is connected with an air inlet of a fan (6) by a second air duct (5); an air outlet of the fan (6) is connected with a vertical third air duct (7); and a rain shielding plate (14) is arranged at the top end of an air outlet of the third air duct (7) and is formed in a manner that a light bracket (15) is fixed on the side wall of the third air duct (7). The waterproof light-oxygen catalyzing deodorizing type waste gas treatment device provided by the invention has a rain shielding function to protect the fan from water entering, the rain shielding plate is fixed on the side wall of the third air duct, grounded surface support is not required, the self weight is light, materials are saved, and the cost is low.

The invention belongs to the technical field of water pipeline valves, and particularly relates to a resultant high pressure relief air exhaust / supply valve, which is characterized in that the split parts of the compound exhaust valve are compressed into a main body to form a whole, so as to solve the problems that the outline dimension is large, the appearance is irregular, and the making is complex; a big floating ball is combined with U-shaped connecting piece, and further solve the problems that the air exhaust is slow as a small exhaust port is over-small and the gravity force of the small floating ball can't pull open the sealed surface of the small exhaust port for air exhaust when the pressure reaches the peak value; the force produced by the big floating ball and connecting piece can amount to 4 to 45kg, the air exhaust area of the small exhaust port can amount to 13 to 200mm2; and by adopting the plane sealing of a ball head plane sealing element to replace the ball sealing, the problems that as the contact area of the ball sealing is small and the squeezing force is big, the ball is easily clamped, and the sealed surface is sometimes pulled broken during the falling process of the ball. The valve is used for air exhaust or air supply of the water pipeline, and is mainly characterized by completing exhaust of the high-pressure air in the long complex pipeline with big diameter and high drop, thereby bringing safety guarantee for the operation of the pipeline.