39results about How to "Block loss" patented technology

The invention discloses a method for reinforcing a concealed tunnel, which builds a pipe shed for the arch of the tunnel and reinforces the pipe shed by means of grout injection before tunneling. The method comprises the following steps of: setting up a work platform; installing a hollow opening pipe; hoisting and positioning a drilling machine; machining and forming a steel tube of the pipe shed; drilling and forming a hole in a self-advancing way; cleaning the hole, sealing a hole opening; stirring and preparing grout injecting liquid; filling the grout injecting liquid into the pipe shed; and subsequently operating. In the technical scheme of the method, a positioning plate is arranged at a hole opening section, a check valve is arranged in the steel tube of the pipe shed, and a self-advancing drill head is directly connected with the steel tube of the pipe shed in a welding way, so as to effectively heighten the construction precision of the pipe shed, well guarantee an injection effect, reduce the probability of hole caving due to the injecting and the filling are not immediately, simplify construction work procedures, height construction efficiency; and a grout injecting technology with several times is adopted, so as to guarantee the pressure of grout injection at 1.5MPa-2.0MPa, obviously heighten the injection quality of the pipe shed, and improve the advanced support effect of the pipe shed to the concealed tunnel.

The invention relates to a composition for increasing the bone mineral density and preparation and a preparation method thereof. The composition is mainly prepared from, by weight of parts, calcium carbonate, D-glucosamine hydrochloride, chondroitin sulfate, collagen protein, a casein phosphopepetides, a davallia mariesii extract and a vitamin K2. On the specific matched condition, the effect of remarkable synergistic interaction for treating osteoporosis is achieved, and the effects of blocking calcium loss and reinforcing calcium absorption are achieved; after traditional Chinese medicines of shaddock peels, chicken shells, purple bergenia herb and schisandra chinensis are added, the effect of increasing the bone density is further enhanced, and meanwhile the effects of treating the joint inflammation, tonifying the spleen and the kidney, strengthening tendons and bones, improving immunity and the like are achieved.

This invention provides a solar seawater desalination device. The solar seawater desalination device comprises a vacuum pump, a water inlet pump, a solar receiving pond and a low-temperature multi-stage distillation system. A water outlet of the solar receiving pond is connected with the low-temperature multi-stage distillation system. The solar receiving pond comprises multiple stages of water ponds connected in series, and coated vacuum glass is used for the water ponds so that a ceiling can be formed; intercepting filtering cloth is arranged in the water ponds; the low-temperature multi-stage distillation system comprises multiple stages of low-temperature multi-effect vacuum cabins connected in series; an evaporating and condensing heat exchange plate is horizontally arranged in each cabin, the tail end of each evaporating and condensing heat exchange plate is connected with the vacuum pump, and the two ends of each evaporating and condensing heat exchange plate and the bottom of the corresponding cabin are sealed so that a sealed cavity can be formed; a water passing hole is formed in the lower portion of the connection face of every two cabins; the top of the previous-stage cabin and the bottom of the later-stage sealed cavity are connected with a steam pipe; a fresh water flow-out port is formed in the bottom of each sealed cavity; the vacuum degree of each later-stage cabin is lower than that of the corresponding previous-stage cabin due to the vacuum pump. The technical effects of reducing water making cost and improving water making efficiency are achieved.

The invention particularly relates to an air duct type barbecue grill, comprising an inner lining. The inner lining is provided with an outer lining. An air duct is disposed between the inner lining and the outer lining. The inner lining is provided with an air outlet. The outer lining is provided with an air inlet. The air outlet and the air inlet are communicated separately with the air duct. The air inlet is provided with a fan. The air duct type barbecue grill has the advantages that the combination of the air inlet, fan and air duct is used to absorb heat in the air duct, forming energized hot air that helps carbon to fully burn efficiently with high energy; rotary hot air formed in the air duct is effective in lowering the temperature of the outer lining, thus giving energy saving and environment protection and blocking heat loss, and also reuses the heat and secondarily heats the air, thus increasing the energy of the hot air; in addition, the hot air convection formed in the inner lining also evenly heats food; charcoal is distributed freely below a charcoal tray, the need for specially storing the charcoal in a flame guide tray or box is avoided, simplicity, no ash and no smoke occur, and a user's operation is facilitated.

The invention discloses a vegetable preservation sterilizing agent and a preparation method thereof, and relates to the technical field of preservation. The vegetable preservation sterilizing agent is mainly prepared from the following raw materials in parts by weight: 10-15 parts of nano silver, 5-9 parts of film coating agent, 15-18 parts of plant growth accelerator, 3-7 parts of plant growth inhibitor and 1-2 parts of antioxidant. The vegetable preservation sterilizing agent can effectively act on vegetables, the preservation sterilizing effect on the vegetables is improved, and the quality keeping and freshness retaining duration of the vegetables is prolonged. The preparation method of the vegetable preservation sterilizing agent comprises the following steps: according to parts by weight, adding 10-15 parts of the nano silver, 5-9 parts of the film coating agent, 15-18 parts of the plant growth accelerator, 3-7 parts of the plant growth inhibitor and 1-2 parts of the antioxidant into water,; stirring and pulping in turn. The preparation method has the advantages of simple operation steps, mild operation conditions, easiness in implementation and relatively great industrial application prospect.

The invention relates to a thermal insulation composite external wall panel suitable for industrial manufacturing and environment-protecting construction and a manufacturing method of the thermal insulation composite external wall panel. The thermal insulation composite external wall panel comprises a composite fiber pressure plate and a vermiculite base plate, and is characterized in that the composite fiber pressure plate and the vermiculite base plate are compounded through staggered grooves and bulges, wherein an energy-saving and thermal-radiation-preventing air absorbing and decomposing adhesive layer which is capable of preventing residual air at the joint face from forming local heat convection is arranged between the composite fiber pressure plate and the vermiculite base plate.

The invention discloses a heat-insulating high-vacuum die-casting die. The heat-insulating high-vacuum die-casting die comprises a static die assembly, a movable die assembly, a vacuumizing assembly and a heat-insulating plate, wherein the static die assembly comprises a static die plate; a static lining die is arranged on the static die plate; the movable die assembly comprises a movable die plate; a movable lining die is arranged on the movable die plate; the movable lining die is abutted against the static lining die; the vacuumizing assembly comprises a vacuum pipeline; a vacuum air exhaust opening is formed in one end of the vacuum pipeline; the vacuum air exhaust opening is formed in the end surface, in contact with the movable lining die, of the static lining die; the heat-insulating plate is made of a material which is high-temperature-resistant and low in heat conductivity; and the heat-insulating plate is arranged on one side, deviated from the movable die plate, of the static die plate. Through simple structural improvement, the heat-insulating high-vacuum die-casting die can effectively keep the heat balance of a temperature field of the die, stabilize the temperature of the surface of a cavity of the die, reduce heat loss, guarantee the quality of a product and prolong the service life of the die.

The invention discloses a low-temperature heating cigarette utensil. The low-temperature heating cigarette utensil comprises a heating cavity and an electronic rod assembly, wherein a metal compositesleeve rack for arranging a cigarette is arranged in the heating cavity and provided with an electromagnetic heating body for heating the cigarette; a magnetic-conducting coil for providing an alternating magnetic field is arranged on the periphery of the electromagnetic heating body; the electronic rod assembly and the magnetic-conducting coil are connected to supply alternating current. According to the low-temperature heating cigarette utensil, the cigarette is heated by the electromagnetic heating body according to the electromagnetic induction principle, produced heat is concentrated in the cigarette, heat dissipated to the outside is reduced, and heat insulation effect is enhanced, so that the problem of overhigh temperature of the outer wall of the cigarette utensil is solved.

The invention relates to the field of health-care foods, and particularly relates to a health-care food capable of increasing the bone mineral density and alleviating osteoporosis and a preparation method thereof. The food is prepared from the following components in parts by weight: 20-40 parts of chondroitin sulfate, 20-45 parts of D-glucosamine hydrochloride, 20-40 parts of maca extract, 10-30 parts of eucommia ulmoides extract, 5-25 parts of calcium carbonate and 2-8 parts of vitamin D3, wherein the eucommia ulmoides extract can be used for helping generation of bone collagen and proteoglycan, protecting and repairing articular cartilage tissues and increasing the bone mineral density; and the maca extract contains macaenes, macamides, polysaccharide, amino acid, fatty acid, trace elements, vitamins and other ingredients beneficial to human bodies, and is capable of retarding senescence, improving immunity, enhancing constitution, relieving pains and promoting absorption of chondroitin sulfate and D-glucosamine hydrochloride. The health-care food has a good effect of prevention, treatment or auxiliary treatment on diseases caused by bone mineral density decrease and cartilage tissue degeneration by means of synergetic coordination of the ingredients.

Disclosed is a novel double-layer filter material filtration tank applied to oil field sewage treatment. The tank comprises a tank body, a water distribution device, a stirring device, a mechanical sealing device, filter materials and a water collecting device; the water distribution device comprises a filtering water inlet pipe, a water inlet cavity, a water distribution cavity, a water distribution substrate and a water distribution sieve plate; the stirring device comprises a motor, a rotating shaft, a propeller, a shaft sleeve and saw blades; after sewage enters the filtration tank throughthe filtering water inlet pipe, the flow direction of the sewage is distributed by the water distribution device, the sewage is filtered by the multi-layer filter materials, and filtered water is collected by the water collecting device. In the backwashing process, the hardened filter materials can be destroyed by the propeller and the saw blades, and convection flushing of the water and the filter materials is accelerated. The filtration tank mainly solves the problems of incomplete backwashing, instability of the rotating shafts and loss of the filter materials, achieves full automation inthe process, effectively saves manpower, reduces the use cost and improves the work efficiency.

The present invention relates to an integrated biofilm reaction system, which comprises a housing, an anaerobic working zone, an aerobic working zone and a sludge separation zone, wherein the anaerobic working zone, the aerobic working zone and the sludge separation zone are encapsulated in the housing and are sequentially connected, overflow devices are respectively arranged between the anaerobic working zone and the aerobic working zone and between the aerobic working zone and the sludge separation zone, a plurality of flat plate membrane elements are arranged inside the sludge separation zone, a reflux pipe is arranged between the bottom portion of the sludge separation zone and the anaerobic working zone, the flat plate membrane element comprises a metal plate electrode assembly, permeation membranes and a flat plate frame, the front surface and the rear surface of the flat plate frame are provided with the permeation membranes, the metal plate electrode assembly is arranged between the permeation membranes and comprises two electrode plates respectively connected to different output terminals of an alternating current power supply and are insulated from each other, the electrode plate is an integrally-molded metal plate member, and a water production outlet for communicating a water production cavity between the two permeation membranes is arranged on the flat plate frame. According to the present invention, the integrated biofilm reaction system can achieve the effective treatment of active sludge, and has advantages of integrated structure, small occupation area, and good environmental adaptability.

The invention discloses an intelligent smell array sensor. The intelligent smell array sensor consists of a chip, wherein an electric insulating layer is arranged on the upper surface of the chip; heaters and a temperature measurer are arranged in the electric insulating layer; the temperature measurer is arranged between the heaters; smell sensor film layers of different types are arranged on theupper surface of the electric insulating layer; the smell sensor film layers of different types are arranged in the form of an array; smell sensors of different types are embedded into the smell sensor film layer; sensor electrodes are arranged on the smell sensors of different types; and a plurality of electrode wiring posts are arranged at the two sides of the upper surface of the electric insulating layer. The sensor takes a micro electronic technique as a main body, so that the sensors are arranged on the same chip in the form of array; through the film technique, the sensors enter nano-scale, and the sensors are manufactured through the nanotechnology, so that the surface volume ratio is increased to the greatest extent, and sensitivity of the sensor is excellent in aspect of quality.

The invention discloses a plant-growing meshwork carpet for slope restoration and a slope restoration method. The plant-growing meshwork carpet comprises a fine grid linen net surface layer, a seed layer, a coconut net geotechnical grid chamber and a fine grid linen net bottom layer; plant-growing matrix fills in the coconut net geotechnical grid chamber; all parts are fixed into a carpet-shaped coil through degradable fibers. The plant-growing meshwork carpet is high in flexibility, and can be bent at random to be adapted to various uneven slopes; the seed layer can be collocated at random as requirement, the rooting and sprouting effects are good, the slope entironment can be improved within a short period, the ecological benefits are increased, and moreover, the benefiting period is long; the manufacturing cost is low, the materials are easily obtained, the maintaining cost is low, and thus the economic benefit is obvious, and a good landscaping effect is achieved.

The invention discloses a sand cultivation mode, comprising the steps of setting planting ditches in a protected land, wherein the planting ditches are 0.8 m spaced, and a drain ditch 0.35 m in depthis arranged at the outer side of each planting ditch; covering the inside of the drain ditches with mulch, fixing well, and setting an underground liquid reservoir at the tail end, except for the cultivation area, of the protected land; allowing water in the planting ditches to smoothly flow from inside to outside, and covering the inside of the planting ditches evenly with HDPE (high-density polyethylene) to tightly wrap the two sides, inner side and outer side of the planting ditches; mixing well slag and sand in the mass ratio of 3:5, spreading the mixture evenly into the planting ditches,laying substrate, using water mixed with a disinfectant to irrigate the planting ditches by flooding, and washing the substrate twice; laying dripper tubes above the substrate, and covering with mulch. The sand cultivation mode has low input cost; the slag and sand can be taken in situ; the sand cultivation mode is simple to perform and is easy for common people to accept; the sand cultivation mode provides better convenience and high speed, and saves time and labor.

The invention discloses a preparation method of a fruit tree wound healing agent, and belongs to the field of chemical engineering. The preparation method comprises the steps that 30-50 parts of fruitbranch treatment materials, 20-40 parts of composite amphiphilic copolymer, 15-25 parts of humic acid compound, 6-14 parts of ferrous sulfate and 40-60 parts of water are obtained by mass, mixed andstirred for 40-60 min at 30-40 DEG C; then, 6-14 parts of copper sulfate, 5-12 parts of monopotassium phosphate, 6-12 parts of borax and 10-15 parts of sodium benzoate are added and evenly mixed; ultrasonic dispersion is carried out for 20-40 minutes to obtain the fruit tree wound healing agent. The method solves the problems that an existing fruit tree wound healing agent is monotonous in function, the sterilization effect is not ideal, and fruit tree growth and fruit production are influenced.

The invention discloses a construction project damaged mountain ecological environment protection low-cost restoration method. In order to overcome the shortcomings that a conventional construction project damaged mountain is difficult in ecological environment protection low-cost restoration, high in treatment cost, poor in effect and the like, The method of the invention makes damaged mountain ecological holes on a slope of the damaged maintain and planting pre-cultured ecological bodies into the damaged mountain ecological holes for maintenance to form a damaged mountain ecological slope soas to realize the construction project damaged mountain ecological environment protection low-cost restoration. The method of the invention is used for the construction project damaged mountain ecological environment protection low-cost restoration, can realize the ecological environmental protection restoration treatment in a real sense, and is good in effect and high in efficiency, and reducesthe treatment restoration cost by more than 70%.

The invention discloses a heat-insulation ceiling lamp which comprises a shell and a lamp holder used for installing a bulb, wherein the shell comprises a cylinder cover and a flange positioned below the cylinder cover, the cylinder cover and / or the flange are / is of a double-layer sealing structure, the double-layer sealing structure is provided with a cavity, and the cavity is of a vacuum structure; and the ceiling lamp is of an internally-evacuated double-layer sealing structure, thereby ensuring the interior of the lamp to heat, wherein the heat is separated instead of being delivered to the outer surface of the lamp, the internally-evacuated double-layer sealing structure has a heat-insulation effect, the temperature of the outer surface of the ceiling lamp can be maintained in a low-temperature state, the safety of the lamp operating environment is ensured, and the safety requirements of the lamp design and installation are met.

The invention relates to the technical field of macromolecules, in particular to a polyamide barrier material and a preparation method thereof. The polyamide barrier material at least comprises the following preparation raw materials in parts by weight: 50-70 parts of polyamide resin, 30-50 parts of thermoplastic polyester, 1-3 parts of an antioxidant, 0.1-1.5 parts of a toughening agent, 0.5-2 part of a lubricating agent and 0.1-1 part of a dispersing agent.

The invention provides a refrigerator. The refrigerator comprises a storage room defined by a refrigerator container, a second air curtain air duct arranged on the top wall of the refrigerator container and provided with an air curtain air outlet in the front end, a fan accommodating cavity arranged on the rear wall of the refrigerator container and used for accommodating a centrifugal fan, a first air curtain duct and a main air supply duct, the first air curtain duct extends to the top end of the refrigerator liner from bottom to top, the lower end of the first air curtain duct communicates with the fan accommodating cavity through an air curtain air inlet, and the upper end of the first air curtain duct communicates with a second air curtain duct; one end of the main air supply duct communicates with the fan accommodating cavity through a main air inlet, and the other end of the main air supply duct communicates with the storage room; when the storage room is closed, the air curtain air inlet is closed, and the main air inlet is opened; and when the storage room is opened, the air curtain air inlet is opened, and the main air inlet is closed. Different air ducts are opened according to the opening and closing states of the storage room, on one hand, air curtain air outlet in the door opening stage of the refrigerator storage room can be achieved, and therefore loss of the cooling capacity of the storage room and heat exchange inside and outside the storage room are effectively blocked; and on the other hand, the main air inlet is closed in the door opening stage of the storage room, and resources can be effectively saved.

The invention discloses a drain pipe component for refrigeration equipment. The drain pipe component comprises a drain pipe and a pipe cap, wherein a bent part is formed on the drain pipe, and the bent part is designed to be capable of containing a certain amount of liquid to seal the drain pipe, the pipe cap is arranged at the outlet of the drain pipe, and a gap running through the pipe cap is formed in the pipe cap. According to the drain pipe component used for the refrigeration equipment of the embodiment of the invention, the communication between the refrigeration equipment and the outside is obstructed, loss of cold in the refrigeration equipment is effectively obstructed, the refrigeration performance of the refrigeration equipment is improved, serious frosting in the refrigeration equipment resulted from entrance of outside heat into the refrigeration equipment is avoided, the refrigeration performance of the refrigeration equipment is further improved, the purpose of saving energy is achieved, the structure is simple and the cost is low. The invention also discloses refrigeration equipment with the drain pipe component.

The embodiment of the invention provides an energy-saving window which comprises a window frame and a glass assembly, a cavity is formed in the window frame, and a phase change material is arranged in the cavity; the glass assembly is fixedly arranged on the window frame; wherein the window frame is in sealed connection with the glass assembly, and the glass assembly extends into the window frame to be in contact with the phase change material. The phase-change material is arranged in the window frame, and the absorbed potential is released to the glass assembly in the phase-change process, so that the temperature of the glass assembly is increased, indoor heat is prevented from being lost through the glass assembly, and effective energy saving is achieved.

The invention belongs to the technical field of environmental pollution control, and in particular relates to an iron-sulfur nutrient slow-release ball used for sludge heavy metal bioleaching. An iron-sulfur nutrient slow-release ball used for heavy metal bioleaching of sludge in the present invention: it consists of two parts: the inner part is a small particle ball loaded with iron-sulfur nutrition; the outer part is a plastic-fiber composite mesh large spherical shell; the inner part The small particle balls loaded with iron-sulfur nutrition are filled in the outer plastic-fiber composite mesh large spherical shell, which together constitute the slow-release ball of iron-sulfur nutrition. The invention can be used for sludge heavy metal biological leaching, and can provide long-lasting and stable S and Fe nutrition for the sulfur bacilli on which sludge heavy metal treatment depends. On the one hand, the iron-sulfur nutrient slow-release ball can increase the contact chance of free T.f bacteria, free T.t bacteria and nutrient matrix; on the other hand, it can provide more attachment carriers for attached T.f bacteria and attached T.t bacteria. As a beneficial supplement to the sludge bioleaching mixed liquor reaction system.

The invention discloses a method for reinforcing a concealed tunnel, which builds a pipe shed for the arch of the tunnel and reinforces the pipe shed by means of grout injection before tunneling. The method comprises the following steps of: setting up a work platform; installing a hollow opening pipe; hoisting and positioning a drilling machine; machining and forming a steel tube of the pipe shed; drilling and forming a hole in a self-advancing way; cleaning the hole, sealing a hole opening; stirring and preparing grout injecting liquid; filling the grout injecting liquid into the pipe shed; and subsequently operating. In the technical scheme of the method, a positioning plate is arranged at a hole opening section, a check valve is arranged in the steel tube of the pipe shed, and a self-advancing drill head is directly connected with the steel tube of the pipe shed in a welding way, so as to effectively heighten the construction precision of the pipe shed, well guarantee an injection effect, reduce the probability of hole caving due to the injecting and the filling are not immediately, simplify construction work procedures, height construction efficiency; and a grout injecting technology with several times is adopted, so as to guarantee the pressure of grout injection at 1.5MPa-2.0MPa, obviously heighten the injection quality of the pipe shed, and improve the advanced support effect of the pipe shed to the concealed tunnel.

The invention belongs to the technical field of soil improvement, and particularly relates to a planting method suitable for saline-alkali soil remediation and improvement, in the planting method, a first planting fertilizer layer with a preset thickness is laid at the bottom of a planting hole or a planting ditch, so that on one hand, moisture and nutrient loss is blocked, moisture and nutrient leakage is prevented and controlled, and soil remediation and improvement are facilitated; on the other hand, the water and soil conservation and leakage prevention effects are achieved, and later-period nutrient and fertilizer requirements of plant crops are met; after soil in the planting holes or soil in the planting ditches and planting fertilizer are fully and evenly stirred according to a preset proportion, backfill soil is formed and then backfill planting is conducted, and the growth nutrient and fertilizer requirements of planted crops are met; after a second planting fertilizer layer with the preset thickness is laid below the surface soil again, the surface soil is covered, and the effects of preventing salt from accumulating on the ground surface and permeating into the planting area and delaying water evaporation are achieved; by the adoption of the technical scheme, the purpose of restoring and improving the saline-alkali soil can be achieved only by simply adjusting and changing the planting method.

The invention discloses an insulating combined aluminium tile comprising a fixing frame, an upper tile body and a lower tile body. The fixing frame is a plate frame with barbs. The upper tile body comprises two upwardly-protruding arched-arc-shaped tile covers, a flat drainage trench, a base and an insulating material. The bottom of the base is provided with multiple fixing holes evenly, and two ends of the base are connected with the bottoms of the two arched-arc-shaped tile covers respectively to form an insulating cavity which is filled with the insulating cavity. The outer ends of the arched-arc-shaped tile covers extend outwardly in an arc manner. The side face of the bottom, extending outwards, of each arched-arc-shaped tile cover is provided with a clamping groove. The lower tile body is in the shape of a concave arc concaving downwards, and flanges bent to the inner side are arranged on two sides of the concave-arc-shaped lower tile body respectively. The insulating combined aluminium tile is light in self weight and convenient to mount and good in waterproofness by adopting concealed type slot connection, and insulating effect is improved by the aid of the arranged insulating cavity.

The invention relates to a preservation method of agaricus bisporus and belongs to the technical field of edible fungus preservation. The method includes the following steps: draining the surface water of cleaned agaricus bisporus and performing pre-cooling; placing the pre-cooled agaricus bisporus in preservative solution and performing soaking for 30min to 60min, wherein the preservative solution is prepared from the following constituents in parts by weight: chitosan 5-10, sodium chloride with a concentration of 0.5wt% 10-15, maltose 1-5, fungus lipids 0.5-1 and sterile water 100; and finally performing packaging with preservation bags and performing storage at a temperature of 14 DEG C to 16 DEG C. According to the invention, the agaricus bisporus is soaked in the preservative solution and a film layer is formed on the surface of the soaked agaricus bisporus, so that the water loss of the agaricus bisporus and the oxidation reaction of the surface substances of the agaricus bisporus are blocked so as to effectively solve the problem of the short shelf life of the agaricus bisporus.

The invention relates to the technical field of composite membranes, in particular to an antibacterial composite membrane containing PEC, KGM and nano TiO2 and a preparation method thereof.The antibacterial composite membrane containing PEC, KGM and nano TiO2 is prepared from, by weight, 0.6%-1% of pectin (PEC), 0.5%-1.0% of konjac glucomannan (KGM), 0.5%-0.7% of glycerin, 0.5%-4.5% of nano TiO2 and the balance distilled water; the antibacterial composite film disclosed by the invention has excellent tensile property, high water vapor permeability and low oil permeability coefficient, and can promote the diffusion of moisture in fresh meat, reduce the moisture content of the meat and delay the decay of the meat; the loss of flavor substances can be reduced, the loss of fat can be blocked, and the flavor of fresh meat is kept; after the nano TiO2 is added into the antibacterial composite film, the mechanical property, the antibacterial activity, the barrier property and the like of the antibacterial composite film are obviously improved; the nano TiO2 can inhibit the breeding of microorganisms on the surface of food, can effectively make up the performance defects of the PEC / KGM composite film, and can enhance the antibacterial effect and mechanical properties of the PEC / KGM composite film.

The invention relates to a magnetic mattress, which comprises a mattress body, wherein the mattress body comprises a first bamboo charcoal floss layer, a first bamboo charcoal cotton layer, a first non-woven fabric layer, a far-infrared fibrous layer, a nano fragrance layer, a polyurethane layer, a geomagnetic layer, a foamed pearl cotton layer, a second non-woven fabric layer, a second bamboo charcoal cotton layer and a second bamboo charcoal floss layer in sequence from top to bottom. The magnetic mattress is of a multi-layer structure; the air heat preservation can be increased; the loss ofshell temperature is blocked, and the blood circulation of a human body can be effectively improved.

The invention provides a valve plate installation part. The valve plate installation part is arranged inside a seat crane shell and comprises a bottom plate and a first side plate and a third side plate which are oppositely arranged on the bottom plate, wherein the third side plate is matched with a shell side plate, the first side plate is arranged to be away from the shell side plate, and the outer side face of the first side plate is a wind bearing face. According to the valve plate installation part, an opposite position of the third side plate connecting a shell right side plate is provided with the first side plate, the wind bearing area of the valve plate installation part is increased, and then the wind bearing area of the shell right side plate is decreased, and the condensation weakening effect on the shell right side plate is strong; and on the other hand, the condensation phenomenon of a liquid inlet pipe inside the valve plate installation part further can be reduced, andthe functionality of the valve plate installation part is integrally enhanced.