246results about How to "With fire protection function" patented technology

The invention discloses water-based elastic heat proofing, heat insulation and energy-saving coating. The coating comprises elastic emulsion, hollow micro-beads powder, far-infrared ray reflecting powder, titanium dioxide, filler, cellulose, anti-foaming agent, dispersing agent, pH conditioning agent, rheologic thickening agent and soft water. The invention also discloses a preparation method of the water-based elastic heat proofing, heat insulation and energy-saving coating. The water-based elastic heat proofing, heat insulation and energy-saving coating has the advantages that the coating can be coated on a variety of backing materials, and of heat insulation and heat preservation, fire prevention, water resistance, anti cracking and noise control, and the like. The coating is suitable for the coating of the exterior wall, the roof and the interior wall and the like, and is also suitable for decreasing the temperature and reducing the tricking water of the metal surface such as the petrochemical industrial storage tank pipeline and the like.

The invention provides a protective device of a power battery, which solves the problem that the whole battery pack forms a short-board effect because the environmental temperature difference between single batteries causes the effectiveness reduction of single batteries in the process of charging and discharging a battery pack of the power battery in the prior art. The protective device comprises a closed battery box inside which a liquid is contained, wherein the battery pack is immersed into the liquid inside the battery box. The invention also provides a protective method of the power battery, comprising the step of immersing the battery pack of the power battery into the liquid. The protective device or the protective method can equalize the environmental temperature of all single batteries in the battery pack, avoid the problem of the single batteries, prevent the short-board effect, prolong the service life of the batteries and also achieve the effect of fire prevention because of the liquid sealability of the liquid.

The invention relates to a fire retardant coating for a steel structure surface of a nuclear power plant. The fire retardant coating consists of components A, B and C at a weight ratio of (4-6): 1: 1, wherein the component A is a mixture composed of 15-35 parts of epoxy resin, 2-10 parts of reactive diluent, 5-15 parts of dehydration catalyst, 10-30 parts of carbonizing agent, 5-20 parts of foaming agent, 15-35 parts of fire retardant, 5-15 parts of smoke inhibitor, 10-30 parts of pigment and filler and 2-10 parts of auxiliaries; the component B is a mixture composed of 10-50 parts of toughened resin, 10-30 parts of pigment and filler and 2-10 parts of auxiliaries; the C component is an amine curing agent; and the toughened resin in the component B is hyper-branched polyester resin with a terminal carboxyl group. The fire retardant coating disclosed by the invention is more excellent than a normal intumescence fire retardant coating in binding strength, freezing and thawing cycle resistance, acid and base resistance, and fire retardant limit, and is specifically up to fire resistance requirements of the steel structure surface of the nuclear power plant.

An operation unit for controlling and protecting switch appliance includes an installing plate and a face shell marked with positions of automatic control trip, section, reset and isolation, a push rod, a push pedal, a rocker arm, a pull rod parallel to a pyromagnetic stripper, a master circuit contact set, an electromagnetic device unit and an isolation unit of KBO control and protection switch appliance are set in the installing plate, a manual operated indication button set at the positions mentioned above, a side cam, a trip cam, an intermediate cam, a middle retainer, a side retainer and a spring are in mounted in the installing plate.

The invention discloses silica sand tailings and coal gangue-based foamed ceramic and a preparation method thereof. The foamed ceramic is prepared from quartz sand ore tailings and / or silica sand tailings, coal gangue and a sintering additive in blank forming and sintering manners. The preparation method is simple in preparation process, mild in reaction condition, and low in raw material cost; the prepared foamed ceramic has the characteristics of high strength, high porosity, low cost, no secondary pollution and the like; and the specific characteristics are as follows: the utilization rate of solid waste materials can be up to 85%; the volume density of the foamed ceramic is 0.37-0.74g / cm<3>; the porosity is 61.6%-87.5%; the bending strength is 2.1-6.2MPa; the compressive strength is 6.1-15.2MPa; the acid resistance is 98.3%-98.9%; and the alkali resistance is 99.1%-99.4%.

The invention provides an inorganic coating. The inorganic coating is prepared from the following raw materials in parts by weight: 15 to 25 parts of deionized water, 25 to 35 parts of composite silicate aqueous solution, 3 to 5 parts of mixed zeolite silicon powder and 15 to 30 parts of fillers, wherein the composite silicate aqueous solution is prepared by mixing a lithium silicate aqueous solution, a sodium silicate aqueous solution and methane-siliconic acid emulsion in a ratio by mass part of (8 to 10): (3 to 5): 1; and the mixed zeolite silicon powder is prepared by mixing zeolite powder, aluminum silicate fibers and silica aerogel in a ratio by mass part of (2 to 4): (5 to 7): 1. The invention also provides a method for preparing the inorganic coating. The method comprises the following steps: first preparing a coating basic mixed solution; then adding the composite silicate aqueous solution into the coating basic mixed solution, and mixing and grinding to obtain a coating finished product. The inorganic coating is high in fire rating, good in weather resistance, environment-friendly, non-toxic, simple in preparation process and low in cost.

The invention provides a heat-insulation and heat-preservation water-based coating material with an air purifying function. The water-based coating material is prepared through compounding raw materials, such as diatomite, hollow glass beads, lignocellulose, zirconium phosphate loaded sliver powder, nano zinc oxide, tourmaline powder, aluminum oxide, hydroxypropyl methylcellulose, a pure acrylic emulsion, a dispersing agent 5040, 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate, 1,2-propanediol, Kathon, a silicone defoamer, deionized water and the like. The water-based coating material provided by the invention further has the functions of improving air quality, regulating air humidity, preventing mildew and the like through adsorbing harmful substances in air and releasing negative ions, besides an excellent heat insulation function.

The invention discloses a microcrystalline foamed ceramic thermal insulation decoration composite plate which comprises a thermal insulation layer (1) and a decoration layer (2), wherein the decoration layer (2) is fixed onto the thermal insulation layer (1) by the adoption of an anti-flaming binder (8). The thermal insulation layer (1) is a microcrystalline foamed ceramic thermal insulation plate, the decoration layer (2) is a flexible facing clad material, and the decoration layer (2) sequentially comprises a flexible composite material sheet (3), color facing mortar (4) and a finishing coat (5) from bottom to top, wherein the anti-flaming binder (8) is a polymer modified cement mortar adhesive. Through the mode that the microcrystalline foamed ceramic thermal insulation plate with a fireproof function is combined with the flexible facing clad material through the anti-flaming binder, the microcrystalline foamed ceramic thermal insulation decoration composite plate has the advantages of factory component industrialization, construction assembly, fire hazard high-temperature anti-flaming fire prevention, thermal insulation, sound insulation and decoration composition.

The invention belongs to the technical field of new wall materials, and relates to a vitrified microsphere / fly ash composite external wall insulation board made of expanded vitrified microspheres and fly ash as main raw materials. A vitrified microbead / fly ash composite external wall insulation board of the present invention is composed of a thermal insulation layer and a protective layer, and the thermal insulation layer is made of the following raw materials in parts by weight: 100 parts of fly ash, 100 parts of expanded vitrified microspheres -250 parts, 10-25 parts of quick-hardening sulphoaluminate cement, 40-60 parts of water glass, 2-8 parts of emulsified paraffin; the protective layer is made of the following raw materials in parts by weight: 100 parts of quick-hardening sulphoaluminate cement 100 parts of fly ash, 200 parts of quartz sand, 5 parts of glass fiber, 2 parts of polycarboxylate superplasticizer, 5 parts of redispersible latex powder, 40 parts of water; Vitrified beads / fly ash composite external wall insulation board. The vitrified microsphere / fly ash composite outer wall insulation board of the present invention has the function of fire prevention, and has the advantages of light weight, heat preservation, heat insulation, etc., and has a prospect of popularization and application.

This invention discloses an oil-immersed type electric transformer with automatic firebreak and extinguishing device, characterized in: separating the transformer fuel tank into inner and outer layers, placing the transformer oil in the inner cave, and firebreak and extinguishing agent in the outer cave, such as FLA, 4310, 300 and so on, when the transformer works well, the agent evaporates, and the phrase change absorbs heat, which does good to the chilling of transformer; when the electric system gets out of order, the tank seam crossing break, the agent in gas state will run out, because it has complete inflammability, even if the open fire happens out of the fuel tank, the agent also can extinguish the fire outside, and it can insulate the fuel and outside air to make the oil not flame, which can protect the transformer from the fire; after the bug is defecated, the agent and oil can be recycled, and transformer can be fixed. The invention has broad application prospect under the condition of high electric pressure and large-capacity transformer.

The invention provides a sound-proof, heat-insulated and flame-retardant lightweight aggregate magnesite coagulating composite material and a composite plate. The sound-proof, heat-insulated and flame-retardant lightweight aggregate magnesite coagulating composite comprises a lightweight aggregate and a magnesite material; and the lightweight aggregate magnesite coagulating composite is prepared by wrapping the size of the magnesite material on the surface of the light aggregate, and then mixing and condensing and solidifying to obtain the product, wherein the volume ratio of the size of the magnesite material to the light aggregate is of (1 to 8): (12 to 19); the size of the magnesite material includes magnesium oxide, and magnesium chloride aqueous solution with concentration of 15 to 35 of baume degree, wherein the weight ratio of the magnesium oxide to the magnesium chloride aqueous solution is of 5: (2 to 4). The composite plate is the plate comprising the lightweight aggregate magnesite coagulating composite material; and an attaching face layer, an adhering face layer and an adhering layer are arranged on the plate. Building or decorative material products manufactured by the lightweight aggregate magnesite coagulating composite material and the composite plate are obvious in the reduction of the weight, as well as the improvement of the heat insulating performance, the sound-proof performance and the flame-retardant performance, and have relatively high compressive strength, can completely meet the construction standards; and the lightweight aggregate magnesite coagulating composite material and the composite plate can be widely applied.

The invention relates to the technical field of a novel wall material, in particular to an external heat insulation board of an external wall with the flameproof function made of the main raw materials of cement and polystyrene particle. The external heat insulation board of the flameproof external wall made of cement and polystyrene particle comprises a heat insulating layer and a protective layer. The heat insulating layer is made of the following raw materials in parts by weight: 100 parts of rapid hardening sulphate aluminium cement, 1-5 part(s) of polystyrene particle, 3-6 parts of glazed hollow bead, 0.7-1 part of saw powder, 0.8-1.5 part(s) of naphdalin series water reducer and 6-10 parts of VAE emulsion, wherein the mass ratio of water and the materials is 0.40-0.65; the protective layer is made of the following raw materials in parts by weight: 100 parts of rapid hardening sulphate aluminium cement, 200 parts of quartz sand, 3 parts of fiber glass, 2 parts of polycarboxylate super-plasticizer, 10 parts of VAE emulsion, wherein the mass ratio of water and the materials is 0.52; and the external heat insulation board of the flameproof external wall made of cement and polystyrene particle can be produced through composite technology of the heat insulating layer and the protective layer. The invention has the flameproof function, and has the advantages of light weight, high strength, heat insulation, water resistance and moisture resistance, convenience for building construction and the like.

The invention discloses a vibration-damping heat-insulation paint which comprises the following components by mass percent: 9.5-11.5% of chlorine ether resin, 5-6% of adhesive, 3.5-4.5% of melamine urea copolymerization resin, 18-21% of environment-friendly solvent, 14.5-16.5% of soft filler I, 13-15% of soft filler II, 18-20% of soft filler III, 3.8-5.8% of plasticizer, 1.5-2.3% of titanium pigment and 4-6% of hollow micro-bead. The invention also discloses a preparation method of the vibration-damping heat-insulation paint. The high-efficiency vibration-damping heat-insulation paint can be coated on various substrates, has advantages in various aspects such as heat insulation, heat preservation, fire prevention, water prevention, crack prevention, noise prevention, weather resistance, acid / alkali resistance, salt-fog resistance, corrosion resistance, vibration damping, durability and the like, is suitable for thermal protection and vibration damping at the external surfaces of spaceflight instruments and data recording instruments of aerospacecrafts and can be used for damping the impact friction and the like of containers and the like.

The invention provides a multifunctional liquid diatom ooze coating material. The multifunctional liquid diatom ooze coating material is formed by compounding the raw materials of kieselguhr, attapulgite, silver-loaded zirconium phosphate powder, nano-zinc oxide, electrical mountain flour, aluminum oxide, hydroxypropyl methyl cellulose, pure acrylic emulsion, a dispersing agent 5040, 1,2-propylene glycol, isothiazolinones, an organic silicon defoaming agent, deionized water and the like. The multifunctional liquid diatom ooze coating material can improve air quality by absorbing hazardous substances in the air and releasing negative ions, further has the functions of regulating air humidity, preventing mildew, condensation and fire and like, and has the advantages of being free of limitations of water sources and technical requirements of constructors and the like.

The evaporative cooling electromagnetic iron eliminator includes casing, iron core inside the casing, winding around the iron core, cooling medium of evaporative cooling medium or the mixture of evaporative cooling medium and transformer oil set inside the casing, and condensator installed on the top of the casing with gas collecting pipe connected from its one end to the casing and liquid returning pipe connected from its bottom to the casing. The evaporative cooling electromagnetic iron eliminator of the present invention has raised safety, reliability and cooling capacity and thus wide application foreground.

The invention discloses a novel construction method for a pseudo-classic building beam column wood-wrapping steel structure. The method specifically comprises the following steps that firstly, a structure of a steel column is constructed; secondly, the steel column is wrapped with fireproof wool; thirdly, the steel column is wrapped with solid wood panels; and fourthly, paint is polished on the face layers of the solid wood panels. The method has the effects that the steel structure has the fire prevention function, the pseudo-classic effect is obvious, the quality is ensured, the working efficiency is improved, and the labor cost is reduced.

The invention discloses a vacuum insulating board insulation decorative dry hanging system and a construction method thereof. The vacuum insulating board insulation decorative dry hanging system comprises a base layer wall body, an insulating layer, a decorative layer, an anchoring piece and a connecting piece, wherein the insulating layer is arranged outside the base layer wall body; the decorative layer is arranged outside the insulating layer; an air layer is formed between the insulating layer and the decorative layer; the base layer wall body is fixedly connected with the insulating layer through the anchoring piece; the base layer wall body is fixedly connected with the decorative layer through the connecting piece. The vacuum insulating board insulation decorative dry hanging system has functions of thermal insulation and fire protection, no wet work exists in the field, and the system can be dismounted and recycled, and belongs to an environmentally friendly, energy-saving and green building system. Main components of the vacuum insulating board insulation decorative dry hanging system are produced in plants, field construction steps are simple, and the operability is high.

The invention discloses a building phosphogypsum powder thermal insulation material and a preparation method thereof. The thermal insulation material comprises the following ingredients: 40-50 wt% of building gypsum powder, 10-15 wt% of cement, 8-13 wt% of fly ash, 1-2 wt% of foaming agent, and 30-40 wt% of water. The preparation method comprises the following steps: (1) putting building gypsum powder, cement, fly ash and other solid raw materials in a mixer for dry mixing, putting a mixture of water and foaming agent in the mixer, and stirring to form an uniform slurry; (2) injecting the prepared gypsum foamed slurry in a mould; and (3) demoulding and carrying out maintenance to obtain a finished product. The thermal insulation material has the following advantages: (1) low unit weight, low thermal conductivity, thermal insulation, and energy saving property; (2) functions of fire resistance, sound resistance, and air humidity adjustment; and (3) reduction of storage quantity of industrial waste residues.

The invention relates to a magnesium silicate fiber blanket belonging to the technical field of fire-proof heat preservation and insulation materials. The magnesium silicate fiber blanket is characterized by comprising the following materials with oxides in percentage by weight: 40%-85% of SiO2, 3%-40% of MgO, 2%-30% of CaO, and the balance of one or the any combination of B2O3, Al2O3, Fe2O3, Na2O and K2O, wherein the total amount of the SiO2, the MgO and the CaO is more than or equal to 85%. The magnesium silicate fiber blanket is processed through the procedures of material melt, centrifugal thread throwing or blowing fiber forming, cotton collection, pinprick, heat treatment, cutting, and the like. The magnesium silicate fiber blanket has functions of non-inflammation, heat insulation, sound absorption and fire prevention and is a fire-resistant heat-preserving heat-insulating fire-proof material which is widely suitable for various heat engineering equipment and pipelines.

The invention discloses a nest type thermal insulation board and belongs to the technical field of building external wall materials. A board body of the board is constituted by an assembling layer, a resistor bridge layer, a thermal insulation layer, a crack resisting layer and a decoration layer in sequence from the bottom surface layer to the external surface layer, and a preparation method comprises the steps of fabricating materials such as expanded perlite, cement, glass fibers and other accessory materials into different slurry materials, making a structure provided with multiple cone-tower-shaped nests out of the bottom surface, then continuing with the steps of formation, curing, trimming, steam curing, drying and the like, and obtaining the nest type thermal insulation board. The nest type thermal insulation board has the advantages that the dry surface of the thermal insulation board is low in density, the thermal conductivity coefficient is low, the compressive strength is high, the combustion-resisting perform level is high, the board has the fireproof function, and the board has the advantages of being low in weight, heat preservative, high in dimension stability, aging resistant, frost resistant, convenient to install, simple to construct, beautiful in appearance and the like. In the construction process, the flowing dust pollution caused by application of powder materials is reduced, approximately 60% of construction time is saved in the construction cycle, the construction cost is greatly reduced, and the energy consumption is saved in the building construction in the real sense.

The invention relates to a carbon dioxide refrigeration device structure. The carbon dioxide refrigeration device structure is composed of a carbon dioxide compressor, an evaporator, a throttling valve and a condenser, wherein an exhaust port of the carbon dioxide compressor is connected with the condenser, an outlet of the condenser is connected with one end of the throttling valve, the other end of the throttling valve is connected with the evaporator, the other end of the evaporator is connected with a gas inlet of the carbon dioxide compressor, the evaporator is arranged in a refrigeration house body, and the condenser is arranged underground. According to the carbon dioxide refrigeration device structure, a common carbon dioxide refrigeration device structure is improved, single refrigerant carbon dioxide can be adopted, and the carbon dioxide refrigeration device structure is wide in application range, safe, controllable, efficient and capable of saving energy.

The invention discloses a sunken construction method of a battery swap station, and relates to the technical field of battery swap station construction. The sunken construction method comprises the steps that 1, a foundation and a water collecting well are dug downwards; 2, the bottom surface and the side wall of the foundation are flattened; 3, the surface layer of the foundation is solidified, waterproof treatment is conducted, and base bearing piles are reinforced; 4, horizontal auxiliary materials are laid, specifically, the horizontal auxiliary materials are laid at the bottom of the solidified foundation or on a reinforcing seat, the levelness of the horizontal auxiliary materials is measured through an instrument, and the laid horizontal auxiliary materials are leveled and fixed; 5,a lubricant is coated on the surface of a track of the horizontal auxiliary materials; and 6, the battery swap station is mounted, specifically, namely the battery swap station is mounted on the horizontal auxiliary materials, the mounting position of the battery swap station is finely adjusted on the horizontal auxiliary materials, and the battery swap station is precisely mounted. By means of small-scale excavation, it can be guaranteed that the battery swap station is mounted in the narrow foundation, the construction quality can be guaranteed, the cost can also be saved, and meanwhile thewater collecting well further has the fire-fighting function of the battery swap station.

The invention relates to a wall-like brick high-molecular hard wall decorative material, comprising a base material, a printing mask and a polyester coating layer, wherein the base material and the printing mask are laminated together by hot pressing, and the polyester coating layer is coated as a net on the surface of the printing mask. A preparation method of the wall-like brick high-molecular hard wall decorative material comprises the following steps: 1, preparing the base material; 2, preparing the printing mask; 3, printing a mask; 4, performing hot-pressing lamination; 5, performing net coating of polyester; 6, curing; and 7, performing mould pressing cutting. The wall-like brick high-molecular hard wall decorative material provided by the invention has the advantages of avoiding mildew, having fire resistance, and being high in strength, hardness, degree of finish, brightness, and simulation view; and the preparation method has the advantages of being low in production cost, high in quality of products, and high in assembly line output.

The invention discloses an anti-stretching electric wire with a fireproof function. The anti-stretching electric wire comprises a wire core and a wire housing arranged on the outer surface of the wire core. The wire housing comprises an inner layer, a middle layer and an outer layer. The inner layer is internally provided with a flexible wrapping tape which is formed by horizontal inner belts and vertical outer belts, wherein the vertical outer belts are uniformly arranged on the outer surfaces of the horizontal inner belts, and a buffering interval exists between each two vertical outer belts. The middle layer is internally provided with a fireproof combination body. Chlorinated rubber, chlorinated paraffin, alumina and asbestos powder are combined to form the fireproof combination body. Alumina is arranged at the outer side of chlorinated rubber. According to the invention, the tensile strength of the electric wire is effectively improved, the stability of the housing of the electric wire is improved under the condition that the electric wire is pulled by a pulling force, an inward contracting phenomenon of the wire core in the electric wire under the effect of the pulling force is effectively avoided, the wire core is effectively prevented from being broken, and the electric wire has a good fireproof effect.

A fireproof inhaul cable comprises an inhaul cable body (1), an inner lining pipe (2), a fireproof layer (3) and an outer lining pipe (4). The fireproof inhaul cable is characterized in that the innerlining pipe (2) is nested outside the inhaul cable body (1), the outer lining pipe (4) is nested outside the inner lining pipe (2), and the fireproof layer (3) is arranged between the inner lining pipe (2) and the outer lining pipe (4). The fireproof layer (3) is made of one of a filled-type fireproof material (3a), a bond fireproof filler (3b) or fireproof coating (3c). The invention further provides a manufacturing method of the fireproof inhaul cable. According to the fireproof inhaul cable, a fireproof structure is additionally arranged and the fireproof function is added on the basis that the original functions of the inhaul cable are not changed, the fireproof inhaul cable is independent of an original inhaul cable structure, the lining pipes are easy to replace, the fireproof structure and the fireproof function are safe and reliable, a multi-layer protective structure is formed, the strict requirement for the fireproof safety aspect is met, and the manufacturing technologicalmethod is simple, convenient and practical.

Immersion type evaporative cooling mode is adopted in transformer. Evaporative- cooling medium is injected to oil tank. Being generated by energy consumption, heating of windings and magnet core of transformer, quantity of heat is transferred to the evaporative-cooling medium in the oil tank. Thus, temperature of the medium is raised. When the temperature reaches to saturation temperature corresponding to inner pressure, the evaporative-cooling medium in the oil tank is vaporized, so that circulation is formed: vaporized medium generates phase change to absorb heat, and condenser cools vaporized medium to change it back to liquid. Comparing with transformer, the oil immersion type transformer removes out oil conservator to make structure simple; possesses high current density to reduce material needed. Advantages are: non-flammable, low temperature rise, safe and reliable, light and miniaturization.

The invention relates to an automatic compensation butterfly valve which comprises a valve body, a valve rod, a butterfly plate and a valve seat sealing ring. A horizontal medium channel is arranged in the valve body, the valve rod is longitudinally arranged in the valve body, and one side of the valve rod in the valve body is fixedly provided with the butterfly plate which rotates under the driving of the valve rod. The valve seat sealing ring is coaxially arranged on the inner wall of the medium channel on one side, where the butterfly plate is arranged, of the valve body, and the valve seat sealing ring is sealed with the butterfly plate in a rubbing mode. The valve seat sealing ring is arranged on the valve body through an elastic compensation device, fixing seats are fixedly arranged between the inner wall of the valve body on the valve seat sealing ring side and the valve seat sealing ring horizontally at intervals. The fixing seats are horizontally provided with screws which are arranged on the fixing seats through guide regulation by nuts, the screws butt against a spring seat horizontally, and the spring seat butts against a pressing ring horizontally. The pressing ring horizontally butts against the valve seat sealing ring. The automatic compensation butterfly valve is simple in structure, scientific in design, reliable in sealing performance, long in service life, small in opening torque, and suitable for various occasions.

The invention relates to a material formula for an insulating layer of a fireproof cable. The formula contains the following ingredients in percentage by mass: 8-14% of urea-formaldehyde resin, 10-15% of pentabromo ethylbenzene, 15-18% of liquid acid anhydride, 12-15% of mica powder, 16-20% of barite powder and 30-35% of asbestos. The formula has the advantages of reasonable material proportion, low cost and the like and has a fireproof function, and a guarantee is provided for the life and property safety of people.

The invention discloses a safe and explosion-proof pyrotechnic composition milling device. A rack of the device is sequentially provided with an automatic feeding mechanism, a primary grinding system, a secondary grinding system, a vibrating screen and a material collection box from top to bottom, wherein transition connecting seats which are communicated with each other are arranged between the primary grinding system and the secondary grinding system; each of the primary grinding system and the secondary grinding system consists of a driving copper roller and a driven copper roller which are meshed with each other, as well as a driving device. The materials are fed into the primary grinding system for grinding and breaking and drop in the secondary grinding system for grinding and breaking again, and the materials which meet the requirements are collected in the material box through the vibrating screen. The manual operation is replaced by mechanical operation, non-contact operation is realized through man-machine integration and the mechanical hand, and the device has anti-explosion, flameproof and firefighting functions.