43results about How to "Quick leak" patented technology

The invention discloses a fluid discharge gun. The fluid discharge gun comprises a tubular center rod, an elastic ejection pin, a connecting cover and an unlocking wheel, wherein the elastic ejection pin is movably arranged at the front end of the center rod and capable of moving axially, the connecting cover is fixedly arranged on the outer wall of the front part of the center rod, and the unlocking wheel is movably arranged on the outer wall of the middle of the center rod, located behind the connecting cover and capable of rotating; a clamping groove is formed between the connecting cover and the center rod, and an elastic locking bolt extending into the clamping groove for radial motion is arranged on the inner wall of the connecting cover; and a shifting block is arranged on the unlocking wheel and matched with the elastic locking bolt in the radial direction to realize radial motion of the elastic locking bolt. The fluid discharge gun can be matched with an oil drainage device of an oil tank for use, quick connection and disassembly with the oil drainage device can be realized during usage, and the gun is convenient to use; and complete sealing can be realized, oil leakage can be prevented, and quick discharge of fluids can be realized.

The invention provides a high-strength flame-retardant anti-static pipeline comprising an inner layer, a combined layer and an outer layer, wherein the inner layer contains the following proportional components: 600 to 800 parts of high-density polyethylene by weight, 5 to 15 parts of glass fibre by weight, 1 to 2 parts of wollastonite by weight, 1 to 6 parts of ethylene-propylene diene copolymer by weight, 4 to 9 parts of butadiene-acrylonitrile rubber by weight, 3 to 6 parts of styrene-butadiene-styrene terpolymer copolymer by weight, 9 to 13 parts of nano carbon tube by weight, 10 to 30 parts of polypropylene grafted maleic anhydride by weight, 15 to 25 parts of flame retardant by weight and 13 to 19 parts of graphitized carbon black by weight; the outer layer contains the following proportional components: 300 to 500 parts of medium-density polyethylene by weight, 12 to 21 parts of flame retardant by weight and 9 to 13 parts of graphitized carbon black by weight; and the main component of the combined layer is hot melting glue. The pipeline provided by the invention has favorable performances of heat insulation and flame retardant; meanwhile, the pipeline also has higher toughness; and furthermore, the erosion resistance, the high-pressure resistance and the rigidity performance are high.

The invention relates to a dry valve assembly with a quick joint, which consists of a male joint part with a valve and a female joint part with a valve, wherein the male joint part consists of a manual valve, a quick joint and a lock pin in starting and shutoff linkage with the valve; the female joint part consists of a valve capable of elastic automatic recovering and shutoff; and a pin hole matched with the lock pin on the male joint is formed in the female joint, the rotation of a valve rod drives the lock pin to move, so as to ensure that the quick joint is mounted in place and unified with the opening of the valve, and ensure the safety of the operation. The dry valve assembly overcomes the safety hazards of high possibility of mal-operation and fluid leakage due to the lack of effective safety protection design in the quick butt jointing and transferring operation of the fluid medium in the prior art. By adopting the design, the valve can't be opened when the quick joint is not yet butt jointed; the quick joint can't be cut off when the valve is not yet completely closed; and after the quick joint is disassembled, the leakage problem of the residual fluid medium at the joint is avoided. The design not only realizes the quick connection problem that the pipelines need to be frequently connected, but also ensures the safety of the joint of the transfer pipeline of toxic, inflammable and high-corrosive medium.

The invention discloses a polarization maintaining hollow-core anti-resonance optical fiber. The optical fiber comprises an outer cladding layer, two connecting tubes, cladding rings, six semi-elliptical cladding tubes tightly attached to the cladding rings, two round cladding tubes tightly attached to the cladding rings, semi-elliptical nesting tubes which are arranged on the semi-elliptical cladding tubes and have the same inner wall thickness, round nesting tubes which are arranged in the round cladding tubes and have the same wall thickness, and a fiber core area. The gaps between the four semi-elliptical cladding tubes above and below the X axis and the adjacent X-axis semi-elliptical cladding tubes are equal; the gaps between the circular cladding tube and the adjacent semi-elliptical cladding tube are equal; the semi-elliptical nested tubes are arranged at axial symmetry positions in the corresponding semi-elliptical cladding tubes and are connected with the cladding rings; the circular nesting tubes are arranged in the circular cladding tubes in a clinging manner and correspond to the clinging positions of the cladding rings and the round cladding tubes; and each tube is made of pure quartz glass, and the fiber core area and other internal space are filled with air. The optical fiber has the characteristics of low loss, high polarization extinction ratio and good polarization maintaining characteristic at the working wavelength.

The invention discloses a silage pool capable of preventing bottom silage from mildewing and a construction method of the silage pool. The silage pool comprises a silage pool body and a drain pipe, wherein a sand layer, a plastic film and a hay layer are paved at the bottom of the silage pool body from bottom to top sequentially, a fluid collecting tank is arranged on one side of the bottom of the silage pool body and communicated with the drain pipe, and through holes overspreading the film surface are formed in the plastic film. Silage and a silage fluid are rapidly separated by the hay layer, the plastic film layer and the sand layer, the condition that bottom silage is soaked by the silage fluid in the ensiling process is avoided, mildewing of the silage at the bottom of the silage pool body is effectively prevented, besides, the upper part of the silage pool body is sealed, moreover, the only drain pipe communicated with the outside is also covered with the sand layer, the sand layer can better guarantee sealing of the silage pool body, the sealing effect is good, the structure is simple, long-stem storage of silage is guaranteed, mildewing of the silage is avoided, safety guarantee is provided for food for feeding domestic animals, and the silage pool has the characteristics of low cost and convenience in operation.

The invention discloses a high-voltage switch cabinet capable of preventing water accumulation. The high-voltage switch cabinet comprises an electric cabinet, a protective structure, an adjusting structure and a water accumulation preventing structure, wherein the right end of an opening in the front surface of the electric cabinet is hinged to the right side of the rear surface of the cabinet door through a hinge; the protective structure is arranged in an inner cavity of the electric cabinet, and mounting plates are vertically and uniformly arranged in the inner cavity of the protective structure; the adjusting structure is arranged on the lower surface of the electric cabinet, a trapezoidal table is arranged on the lower surface of the adjusting structure, and a water level sensor is arranged at the left end of the front surface of the adjusting structure; the water accumulation preventing structure is arranged on the lower surface of the trapezoidal table. The high-voltage switch cabinet also comprises a PLC controller. The PLC controller is arranged on the front surface of the cabinet door, and the input end of the PLC controller is electrically connected with an external power source. According to the high-voltage switch cabinet capable of preventing water accumulation, the safety coefficient of the electric cabinet in the using process is improved, the requirement for multi-layer protection is met, the water accumulation prevention effect is achieved, and the water accumulation condition is avoided through the design of various kinds of water drainage and leakage.

The invention relates to a preparation method for a flame-retardant and antistatic pipeline with high strength, wherein no degradation on the other performances of the flame-retardant and antistatic pipeline with high strength is realized to a certain extent while an inorganic modifier is greatly enhanced. Simultaneously, the crystallization of polyethylene realizes the effect of heterogeneous nucleation by using a small amount of nanometre materials. Additionally, the flame-retardant and antistatic pipeline with high strength enables to have a flame-retardant characteristic, and the resistivity thereof is decreased until electrostatic charges can be rapidly leaked by adding a flame retardant and a filler with a certain conductivity, so as to achieve the application demands of fire prevention, electrostatic prevention etc.

The invention relates to a method for preparing conductive polystyrene particles with a core-shell structure by utilizing waste polystyrene. According to the method, polystyrene particles prepared byutilizing a waste polystyrene functionalized remodeling method are added into a mixed solvent containing a conductive material, stirring is carried out, so that the surfaces of the polystyrene particles are swollen, and the conductive material is allowed to enter the swollen network space of the surfaces of the polystyrene particles, and the mixed solvent is removed so as to obtain the polystyreneparticles with conductive shells. The polystyrene with a conductive shell prepared by using the preparation method for the conductive polystyrene particles with the core-shell structure provided by the invention has the following advantages: the process is simple; the conductive material has small usage amount, high conductivity and low cost; and the problems of the conductive polystyrene on complicated preparation process, poor mechanical properties and high production cost can be effectively solved. Meanwhile, the preparation method provided by the invention effectively utilizes the waste polystyrene, so the problem of environmental pollution caused by the waste polystyrene is solved.

The invention discloses a powder screening device for magnet processing. The device comprises a base, wherein a bottom plate is supported in the base through first springs, a vibration motor is mounted in the middle of the lower end of the bottom plate, a screening base is arranged at the upper end of the bottom plate through supporting seats on the two sides, a screen is arranged at the bottom ofthe screening base, and a material distributing disc extending into the screening base is connected between supporting columns; and the bottom of a mounting base is movably connected with a driving rotating shaft driven by a servo motor through a connecting mechanism, the bottom of the driving rotating shaft is connected with a brush disc extending into the material distributing disc, the right side of the mounting base is further connected with a feeding box, and a crushing mechanism driven by the servo motor is further arranged in the feeding box. According to the screening device, under the rotating condition of the brush disc, neodymium iron boron powder is tiled, and the screening speed of the neodymium iron boron powder through material leaking holes is improved; and the screening efficiency of the neodymium iron boron powder is improved by two times of screening.

The invention provides a shockproof vehicle-mounted WiFi device which comprises a sliding rail, a sliding block and a WiFi emitter, the outer wall of the WiFi emitter is fixedly sleeved with an elastic air bag, the elastic air bag is arranged in an annular sealing mode, a supporting plate is fixedly installed on the right side face of the sliding rail, a rubber air bag is fixedly installed on thesupporting plate, and an elastic pipe is fixedly communicated between the elastic air bag and the rubber air bag. The shockproof vehicle-mounted WiFi device has the advantages that when a sliding block rapidly moves due to violent jolt, gas in the rubber air bag can be rapidly extruded into the elastic air bag and expands to protect the sliding block, the elastic air bag is arranged in an annularsealing mode and is not provided with fine air holes, and it is determined that rapid gas leakage does not occur when violent jolt occurs; meanwhile, a toothed plate II moves to drive a correspondingpiston rod to move, and air suction and exhaust operations in a piston cylinder can be realized by utilizing the reciprocating motion of the piston rod, so that the air flow in the vehicle can be obviously promoted.

The invention discloses a detachable flour processing device and method facilitating mixed material adding, and belongs to the technical field of flour processing. The detachable flour processing device comprises a stirring box and a shell, wherein the stirring box is arranged on the upper end face of the shell, a feeding port is formed in the left side of the upper end face of the stirring box, asupporting box is fixedly connected to the left end face of the stirring box, a driving motor is arranged at the lower portion of the supporting box, the left end of a motor shaft of the driving motor is fixedly connected to a stirring rod, the right end of the stirring rod penetrates the left end face of the stirring box to an inner cavity of the stirring box, stirring blades are evenly arrangedon the outer wall of the middle of the stirring rod, material leaking holes are evenly formed in the middle of the lower end face of the stirring box, a funnel is fixedly connected to the lower end of the stirring box, the upper end of the funnel is arranged outside the material leaking holes, a rough grinding device is movably connected to the lower end of the funnel, and a fine mesh screen is arranged at the lower end of the rough grinding device. The device is simple in structure, convenient to operate, capable of improving the flour processing efficiency, uniform in material mixing, capable of being rapidly disassembled and assembled and convenient to clean.

The invention discloses a controlled-release fertilizer and application thereof in rice cultivation, and belongs to the field of agricultural production. The invention provides a controlled-release fertilizer. The controlled-release fertilizer comprises a core material, an inner coating film and an outer coating film; the core material is a fertilizer particle; the inner coating film is hydrogel;the outer coating film is modified epoxy resin; the modified epoxy resin is obtained by mixing epoxy resin, epoxy modified silicone oil and a curing agent; according to the controlled-release fertilizer, the exterior of the fertilizer is sequentially coated with hydrogel and modified epoxy resin, and rapid leakage of the fertilizer caused by cracking of an epoxy resin outer coating film of the controlled-release fertilizer can be prevented through arrangement of the hydrogel; epoxy resin modified by epoxy modified silicone oil is used as an outer coating film; due to the modification of the epoxy modified silicone oil, the flexibility of the epoxy resin is greatly improved, so that the modified epoxy resin is not easy to crack under the irradiation of sunlight when serving as an outer coating; and in conclusion, the controlled-release fertilizer has a very good nutrient release function due to the cooperative use of the hydrogel and the modified epoxy resin.

The invention discloses a red mud solid waste comprehensive treatment reduction duplex furnace. The reduction duplex furnace comprises a rotary kiln and a melting furnace; and the rotary kiln and themelting furnace mutually communicate to form the reduction duplex furnace. The invention further discloses a process of the red mud solid waste comprehensive treatment reduction duplex furnace; and the process comprises the steps of: (1) preparation of red mud composite materials; (2) drying of the red mud composite materials; (3) calcining of the red mud composite materials; (4) crushing and mixing; (5) pellet pressing; (6) vacuum heat reduction; (7) smelting by the melting furnace; (8) preparation of raw materials; and (9) furnace slag treatment. The rotary kiln integrates drying, calcining,crushing, mixing and pellet pressing, improves the reliability of red mud comprehensive treatment, and reduces the transfer times and corresponding treatment cost; and a drying plate is reasonable instructural design and convenient for quick drying and leakage, and only needs drying by 10-20 minutes to greatly improve the drying efficiency.

The invention relates to grinding and polishing equipment, particularly relates to ramie abrasive base cloth for grinding and polishing various types of electronic devices, and provides the ramie abrasive base cloth to overcome the technical defects that fabric fibers in the prior art are high in elongation and tend to elongate continuously when tensioned in grinding, the fabric fibers are low in strength and non-abrasion-resistant, the fabric fibers low in friction coefficient tend to emit light from the surfaces after used for a period of time, the friction coefficient is lowered so that the fabric fibers are unavailable, the service life of the fabric fibers is short, two types of insulators tend to generate static electricity in abrading, and the like. The ramie abrasive base cloth comprises, in mass percentage, 80-99% of ramie fibers, and 1-20% of conductive fibers. The ramie abrasive base cloth is simple in structure, high in friction coefficient, less apt to rupture and deform, less apt to generate static electricity, high in durability, stable in physical and chemical properties, and capable of meeting industrial production requirements.

The invention relates to an offshore oil recycling device and a use method thereof. The offshore oil recycling device comprises a hull, an oil storage bin and an oil collecting body, wherein the oil storage bin is arranged in the back end of the interior of the hull, and the oil collecting body is arranged outside the hull; the oil collecting body is formed in a way that a plurality of oil inlet tanks are connected in parallel; the inner bottom of each oil inlet tank communicates with one end of a branch oil conveying pipe, the other end of the branch oil conveying pipe communicates with one end of a main oil conveying pipe, and the other end of the main oil conveying pipe communicates with the oil storage bin; a pump body and a valve are arranged on each branch oil conveying pipe; oil-permeable waterproof hydrophobic oleophilic metal nets are respectively arranged on the wall surfaces of the oil inlet tanks; and the mesh of the metal nets is 50 to 800. According to the offshore oil recycling device and the use method thereof, a large amount of oil which leaks on the sea can be effectively recycled, the recovery and reuse of the leaking oil are realized, and additionally, the offshore oil recycling device has the advantages of simple structure and convenience in disassembly and assembly and can achieve quick strain within a short time.

The invention provides a double water internal cooling generator water leakage detection method and a double water internal cooling generator water leakage detection system. The double water internalcooling generator water leakage detection method comprises the following steps of: testing accumulated water at the bottom part of a double water internal cooling generator; if the accumulated water is judged to be soft water according to a test result of the accumulated water, judging that a generator leaks water; and if the accumulated water is judged to be hard water, judging that an air coolerleaks water, so that whether the generator or a cooling water pipe of the air cooler leaks can be quickly and preliminarily judged. In addition, whether a stator or a rotor of the generator leaks water can be further judged by checking whether the water leakage form of the generator is water dripping or mist.

The invention discloses a bituminous pavement structure. The bituminous pavement structure comprises a bituminous pavement layer laid on the ground surface; gaps facilitating rapid leakage of rainwater are formed in the bituminous pavement layer; sand-based water permeable kerbs are arranged on the two sides of the bituminous pavement layer; the bituminous pavement layer is sequentially provided with a laying layer, a water stabilizing layer and a stress absorption layer from top to bottom; a water permeable surface layer is arranged below the bituminous pavement layer; a water permeable base layer is arranged below the water permeable surface layer; a pipe network used for collecting rainwater is embedded into the water permeable base layer; filter ditches are formed in the two sides of the water permeable base layer; the two ends of the pipe network are connected to the filter ditches; the filter ditches are internally provided with a plurality of watering pipes connected with a surrounding green belt; and water guide pipes are arranged at the two ends of the filter ditches and connected to rainwater openings. As the bituminous pavement layer is arranged, the pavement anti-cracking capacity is improved, pavement water damage and rutting are reduced, original waste pavement materials can be fully used, the service life of the pavement is prolonged, the rapid leakage function is achieved for accumulated water, and accumulated water on the pavement can be rapidly drained.

The invention relates to the field of tire manufacturing, in particular to a sealant for a self-repairing tire, a preparation method of the sealant, and the self-repairing tire. The sealant is prepared from the following components in percentage by mass: 80 to 100 parts of butyl rubber; 0 to 20 parts of conjugated diene rubber; 5 to 70 parts of a reinforcing filler, which comprises 5 to 60 parts of carbon black and 0 to 30 parts of an inorganic filler; 50 to 500 parts of a liquid olefin compound; 0 to 50 parts of resin; and 2 to 20 parts of a vulcanizing agent. The mixture for the self-sealing tire has the effects that after the tire is punctured by a sharp object, the surface of the punctured object is coated with the mixture, and air in the tire is prevented from leaking quickly; when the tire is punctured by a sharp object or the sharp object is pulled out, the self-sealing mixture is used for repairing and sealing a hole formed in the tire by the sharp object, so gas in the tire is prevented from quickly leaking; and the self-sealing mixture allows the tire to be further used without repairing.

The invention provides a construction method for a high viscosity modified asphalt pavement. The construction method comprises the following steps of S1, preparing construction equipment; S2, designing a mix proportion of high viscosity modified asphalt and a mix proportion of a high viscosity modified asphalt mixture and carrying out waterproof bonding layer treatment on the pavement; S3, stirring the high viscosity modified asphalt mixture and directly putting the viscosity modified asphalt into an asphalt mixture mixer to be mixed by using a putting device; S4, transporting the high viscosity modified asphalt mixture to a construction site; S5, carrying out preparation work before paving the high viscosity modified asphalt mixture; S6, selecting and adjusting using parameters of a paver; S7, carrying out paving operation; S8, grinding and forming the high viscosity modified asphalt mixture; and S9, carrying out joint treatment. The high viscosity modified asphalt can be directly putin the asphalt mixture mixer to be dry-mixed with an aggregate without being sheared and modified at a high temperature. An application process is simple and easy to operate, and health of productionstaff is further facilitated and adverse effects to the ecological environment are reduced.

The invention relates to the technical field of sewage treatment mechanical equipment, and discloses an environment-friendly device for preventing sewer pipeline blockage. The environment-friendly device comprises a shell; a well lid is movably connected with the exterior of the shell; lamp beads are fixedly connected with the interior of the well lid; a photosensitive assembly is fixedly connected with the interior of the well lid; a supporting shell is fixedly connected with the interior of the well lid; an electromagnetic valve is fixedly connected with the outer portion of the supporting shell; and a first magnet is fixedly connected with the inner portion of the supporting shell. Under the interaction of all structures of the environment-friendly device for preventing sewer pipeline blockage, the well lid can be automatically lifted when the precipitation amount is large, so that rapid water leakage is achieved; when a sewer pipeline has too much debris accumulation and the leakage speed decreases, the sewer pipeline is dredged through a filtering assembly under the action of atmospheric pressure, so that the effect of automatically dredging the sewer pipeline when the sewer pipeline is blocked is achieved, normal use of the sewer pipeline can be guaranteed, and the device conforms to the manufacturing concept of environmental protection.

The invention discloses a diamond saw blade for rock plate cutting and a manufacturing method thereof.The saw blade is composed of a tool bit and a base body, and the tool bit is prepared from, by weight, 20-40 parts of copper powder, 10-25 parts of tin powder, 10-30 parts of iron powder, 5-20 parts of superfine cobalt powder, 5-15 parts of nickel powder, 10-15 parts of zinc powder and 1-3 parts of graphite; wherein the volume fraction of the diamond is 10-30%, the particle size of the diamond is 120-180 microns, and the specific manufacturing method comprises the steps of burdening, mixing, cold press molding, hot press molding and subsequent treatment. Compared with similar products, the diamond saw blade for cutting the rock plate has the advantages that the sharpness is improved by 1-2 times, the service life is prolonged by 2-3 times, the cost is reduced by 20-40%, cut edges are neat, edge breakage and trailing are avoided, and the diamond saw blade has an advanced level in domestic products.

The invention relates to a method for preparing conductive polystyrene particles with a core-shell structure by utilizing waste polystyrene. According to the method, polystyrene particles prepared byutilizing a waste polystyrene functionalized remodeling method are added into a mixed solvent containing a conductive material, stirring is carried out, so that the surfaces of the polystyrene particles are swollen, and the conductive material is allowed to enter the swollen network space of the surfaces of the polystyrene particles, and the mixed solvent is removed so as to obtain the polystyreneparticles with conductive shells. The polystyrene with a conductive shell prepared by using the preparation method for the conductive polystyrene particles with the core-shell structure provided by the invention has the following advantages: the process is simple; the conductive material has small usage amount, high conductivity and low cost; and the problems of the conductive polystyrene on complicated preparation process, poor mechanical properties and high production cost can be effectively solved. Meanwhile, the preparation method provided by the invention effectively utilizes the waste polystyrene, so the problem of environmental pollution caused by the waste polystyrene is solved.

The invention discloses a silage pool capable of preventing bottom silage from mildewing and a construction method of the silage pool. The silage pool comprises a silage pool body and a drain pipe, wherein a sand layer, a plastic film and a hay layer are paved at the bottom of the silage pool body from bottom to top sequentially, a fluid collecting tank is arranged on one side of the bottom of the silage pool body and communicated with the drain pipe, and through holes overspreading the film surface are formed in the plastic film. Silage and a silage fluid are rapidly separated by the hay layer, the plastic film layer and the sand layer, the condition that bottom silage is soaked by the silage fluid in the ensiling process is avoided, mildewing of the silage at the bottom of the silage pool body is effectively prevented, besides, the upper part of the silage pool body is sealed, moreover, the only drain pipe communicated with the outside is also covered with the sand layer, the sand layer can better guarantee sealing of the silage pool body, the sealing effect is good, the structure is simple, long-stem storage of silage is guaranteed, mildewing of the silage is avoided, safety guarantee is provided for food for feeding domestic animals, and the silage pool has the characteristics of low cost and convenience in operation.

The invention discloses a ventilate blast-proof waterproof type support frame. The ventilate blast-proof waterproof type support frame comprises an up landing leg, an up support beam, a top beam, a down support beam, and a down landing leg. A first hydraulic cylinder is connected between the up landing leg and the top beam, a second hydraulic cylinder is connected between the down landing leg and the top beam. A ventilation device is fixedly connected with the lower surface of the top beam; shrinkage pools are formed in the up landing leg, down landing leg and the outside of the top beam. Pressure interaction devices are arranged at the inside of the shrinkage pools; and the up landing leg, the top beam and the down landing leg are respectively provided with a first processor, a second processor, and a third processor. The ventilate blast-proof waterproof type support frame further comprises an information transmission unit connected with the first processor, the second processor, and the third processor, the information transmission unit is used for receiving signals of the first processor, the second processor, and the third processor, and transfers the signals to the outside. The ventilate blast-proof waterproof type support frame is used for solving the problem that combustible gas in a coal mine shaft have sensor hysteresis in the prior art, realizes the purpose that the coal mine shaft supports a shaft wall, and at the same time, the safety under the shaft is improved.

The invention discloses a negative-pressure-free water supply device. The device comprises a bottom plate, a base is detachably connected to the upper end of the bottom plate, a machine body is mounted on the upper end of the base, the upper end of the bottom plate is detachably connected with a protection cover, the machine body and the base are located in the protection cover, an adjusting mechanism is mounted on the top in the protection cover, two sliding plates are arranged on the adjusting mechanism, first openings are formed in the two sides of the protection cover, pushing mechanisms are arranged on the sliding plates, the two sliding plates correspond to the two first openings, a worker can conveniently carry out overhauling and maintaining on the machine body, the service life can be prolonged, when the device is not used, the machine body can be thoroughly isolated from the exterior, foreign matter can be prevented from entering in the machine body during storage, transportand mounting, water pollution is avoided, the water supply quality is ensured, health of a drinker can be facilitated, meanwhile, adjusting is facilitated, rapid connection with an external water pipecan be facilitated, and work efficiency is improved.

The invention relates to the field of adhesive films, and particularly discloses an anti-static film and a preparation method thereof. The anti-static film comprises an adhesive layer, a base material, an anti-static layer and an isolating layer which are sequentially arranged. Conductive filler of the anti-static layer plays a role in static leakage, and meanwhile a current channel is formed between aniline tripolymer of the anti-static layer and poly (6-carboxyindole) of the isolation layer, so that static charges on the surface of the isolation layer are rapidly transferred to the anti-static layer from the isolation layer, and the anti-static film has a good anti-static effect. When the anti-static film is used on the inner wall of a paint spraying workshop, the possibility of explosion of the paint spraying workshop is reduced. The preparation method comprises the following steps of: hot-pressing the base material to form a film, carrying out corona treatment on the surface, forming an adhesive layer on one surface, forming an anti-static layer on the other surface, and finally forming an isolation layer on the surface, far away from the adhesive layer, of the anti-static layer.

The invention discloses a fluid leaking gun, which comprises a tubular central rod, an elastic thimble movable in the front end of the central rod and capable of axial movement, a connecting cover fixed on the outer wall of the front part of the central rod, and a connecting cover movable in the middle of the central rod. The outer wall and the rotatable unlocking wheel located behind the connecting cover; a card slot is formed between the connecting cover and the central rod, and the inner wall of the connecting cover is provided with an elastic lock bolt extending into the card slot for radial movement; the unlocking A shift block is arranged on the wheel to radially cooperate with the elastic lock bolt to realize the radial movement of the elastic lock bolt. The present invention can be matched with the oil discharge device of the fuel tank, and can be quickly connected and disassembled with the oil discharge device during use, and is convenient to use; it can realize complete sealing, prevent oil leakage, and realize fast fluid discharge.