78results about How to "Fast sealing" patented technology

The invention relates to a preparation method of a wear-resistant toughened composite ceramic layer on the surface of an aluminum alloy product. The wear-resistant toughened composite ceramic layer is prepared by a micro-arc oxidation technology and a cold hole sealing method on the surface of the aluminum product for industrial use. The method comprises the following steps: forming a composite ceramic film layer on the surface of the aluminum alloy by the micro-arc oxidation process, wherein in the film layer, aluminum oxide is taken as a substrate, and dispersed silicon carbide nano-particles and zirconium oxide nano-particles are taken as toughened phases; then performing cold hole sealing on micro-holes of the composite ceramic film layer formed in the process of micro-arc oxidation, and generating nickel oxide and aluminum hydroxide filling phases in the micro-holes, so as to densify the composite ceramic film layer. The wear resistance, the corrosion resistance and the obdurability of the material are significantly improved through the composite film layer, so that the purpose of industrial use is achieved; and meanwhile the industrial application range of the material can be enlarged by the composite film layer.

The invention relates to a carton sealing device, in particular to a carton sealing device for adhesive tape packaging. The carton sealing device for adhesive tape packaging aims at achieving the technical purposes of saving time and labor, being good in carton sealing speed and capable of fixing a carton. According to the technical scheme, the carton sealing device for adhesive tape packaging comprises a bottom plate, a limiting plate, guide rods, a top plate, guide sleeves, a frame body, a transverse rod, a sliding sleeve, a transverse plate, a vertical plate, a fixing rod, a first air cylinder, a pressing roller, an electric wheel and the like, the guide rods are installed on the left side and the right side of the top of the bottom plate, the guide rods are sleeved with the guide sleeves, the frame body is installed between the inner side faces of the guide sleeves on the left side and the right side, and the transverse rod is installed between the lower portion of the left side face and the lower portion of the right side face inside the frame boy. A carton can be fixed through a fixing device so as to be prevented from moving and affecting the carton sealing effect, adhesivetape can be notched through the effect of a cutter head, operators can tear off the adhesive tape more conveniently, and the effects that time and labor are saved, the carton sealing speed is high, and the carbon can be fixed are achieved.

The invention relates to a core for a high-efficiency high-speed box sealing machine. The core is suitable for soft cartons or empty cartons at the same time and can also prevent the folding of adhesive tape and the falling-off of the adhesive tape pasted on the cartons and belongs to the technical field of mechanical equipment. By using the core for the high-efficiency and high-speed box sealingmachine on the packaging production line, the box sealing efficiency is improved, the defective rate of box sealing is reduced, the requirements on carton quality are lowered, and the economic benefits are remarkably increased. According to the core, a second cylinder is adopted to control the tension of return springs of a rear arm wheel so that the spring can have different return forces at different stages. A first cylinder controls the pre-stretching adhesive tape so that the adhesive tape can have different tensions at different stages, so that the above-mentioned functions of the core for the box sealing machine are realized.

The invention discloses a pathological specimen processing method and belongs to the field of specimen processing technology. According to the processing method, sampled pathological tissues successively undergo fixation, dehydration, transparency, wax impregnation, embedding, slicing, staining and mounting so as to obtain a pathological specimen. The fixation is to fix the pathological tissues by the use of a fixative for 4-15 h. The fixative is composed of atractylol, ethoxylated acetylenediol, chlorogenic acid, polyvinylpyrrolidone, sodium chloride, ethyl acetate and pure water. The mounting is to carry out mounting on the stained pathological tissues by the use of a mixture of polyacrylamide, polyvinylpyrrolidone and xylene. According to the invention, toxicity of reagents used in the invention is obviously reduced, the fixation effect is good, degradation and transparency degree are easy to control. Then, the tissues are not easy to deform, embrittle or harden, and mounting is complete and staining is remarkable.

The invention relates to a gum cover for vulcanizing a driving belt. The gum cover is a barrel shape and the upper end and the lower end thereof are open. The gum cover is characterized in that two end surfaces are provided with a ring of sealing lips respectively. The sealing lips at two ends of the barrel-shaped gum cover and a gum cover wall form an angle. The length of the sealing lips at two ends of the gum cover is longer than the thickness of the gum cover. The profile of the sealing lips at two ends of the barrel-shaped gum cover gradually changes from thick to thin. The profile of the sealing lips is a triangle. The gum cover has the advantages of reducing the shrinking deformation due to pressurized height of the gum cover when in use and increasing the effective cutting width of a gum layer. The profile of the sealing lip gradually changes from thick to thin so that the sealing speed to the upper cover plate and lower cover plate of a die during the vulcanization process of the gum cover is quickened, and the sealing performance is improved, the abandoned belt cylinder due to whole or local leakage caused by poor sealing of the gum cover is reduced and the use time of the gum cover can be improved by more than 2 times.

The invention discloses a rotation reciprocating type horizontal seal packaging mechanism. The rotation reciprocating type horizontal seal packaging mechanism comprises a horizontal seal support, a horizontal seal upper gear, a horizontal seal lower gear, motion control mechanisms, a horizontal seal upper sealing device, a horizontal seal lower sealing device, a horizontal seal upper shaft and a horizontal seal lower shaft; the horizontal seal lower gear is arranged on the horizontal seal lower shaft in a sleeving manner and fixedly connected to the horizontal seal lower shaft; the horizontal seal lower gear and the horizontal seal upper gear are meshed, and the horizontal seal upper gear is arranged on the horizontal seal upper shaft in a sleeving manner and fixedly connected to the horizontal seal upper shaft; the position of the horizontal seal upper sealing device corresponds to the position of the horizontal seal lower sealing device; and the motion control mechanisms are arranged at the front ends and the back ends of the horizontal seal upper shaft and the horizontal seal lower shaft, fixedly connected with the horizontal seal upper shaft and the horizontal seal lower shaft and fixedly connected with the horizontal seal upper sealing device and the horizontal seal lower sealing device. By means of the horizontal seal packaging mechanism, the manner that rotation motion and reciprocating motion are combined is adopted, the sealing speed of a horizontal seal is increased, and the horizontal seal packaging mechanism has the higher working efficiency; and meanwhile, sealing faces of the horizontal seal upper sealing device and the horizontal seal lower sealing device act upon each other, and the horizontal seal packaging mechanism reaches the higher horizontal seal sealing quality.

The invention belongs to the field of logistics transportation, and particularly relates to a floating ball type fresh food logistics transportation box. The floating ball type fresh food logistics transportation box comprises a base, wherein a shell is fixedly connected to the upper end of the base, the shell is a horizontally-placed cylinder, a strip-shaped vent opening is formed in the upper end of the shell, an annular inner sliding groove is formed in the shell, an inner sealing ring is rotationally connected in the inner sliding groove, an inner strip-shaped opening corresponding to thestrip-shaped vent opening is formed in the inner sealing ring, an arc-shaped sliding groove is formed in the inner side wall of the shell, each of the two sides of the arc-shaped sliding groove is connected to a sliding block in a sliding mode, the sliding blocks are made of ferromagnetic materials, permanent magnet sections which can be attracted by the sliding blocks or attract the sliding blocks are embedded on the inner sealing ring, and a floating ball is installed on the side wall of each sliding block. According to the floating ball type fresh food logistics transportation box, the floating balls can be arranged on the two sides of the shell, so that when the liquid level shakes, the positions of the floating balls can be changed along with the inclination of the liquid level, thensealing rings are driven to rotate, the vent opening of the shell is sealed, and therefore the water leakage prevention effect is achieved.

The invention discloses a rapid safe construction method for a bag poured type airtight wall and an anti-explosion wall. The rapid safe construction method includes the following steps that a flame-retardant bag is machined, and multiple small holes are formed in the bag in advance; the flame-retardant bag is installed inside a tunnel; the discharging port of a mortar feeding pipe is formed inside the flame-retardant bag, and liquefied mixed mortar is fed into the mortar feeding pipe; sufficient pouring is performed inside the flame-retardant bag, and after the mortar is solidified, the isolation airtight wall is formed. The invention further discloses a construction device for the bag poured airtight wall and the anti-explosion wall. The device comprises the flame-retardant bag, the mortar feeding pipe and a mortar mixing and conveying device, the outlet of the mortar mixing and conveying device is connected with the flame-resistant bag through the mortar feeding pipe in a communicated mode, and the small holes for ventilation and mortar leakage are formed in the two sides and the top wall of the flame-retardant bag respectively. The mode that the flame-retardant bag is filled with the mortar, and the mortar is rapidly solidified and formed is adopted for rapidly, efficiently and safely constructing the isolation airtight wall and the anti-explosion wall, and compared with a traditional construction mode, the rapid safe construction method has the advantages of being obviously safe and efficient.

The invention relates to a sealing device, in particular to a sealing device for processing a bottle opening. The sealing device comprises a base bracket, a support frames, a driving motor, a capping frame, a feeding mechanism and the like. The bottom of one side of the base bracket is fixedly connected with a pair of supporting frames, the driving motor is installed on the top of the base bracket, the capping frame is fixedly connected to the upper portion of the base bracket, and the feeding mechanism is arranged on the base bracket. Through mutual cooperation of the feeding mechanism and a sealing mechanism, bottle caps can be continuously and automatically screwed to bottles to be sealed to seal the bottles, the speed of sealing the bottles is higher compared with the speed of manually screwing the bottle caps to seal the bottles, and the purpose of sealing the bottles can be achieved.

The invention discloses a method for culturing primary hippocampal neurons, wherein the method comprises the following steps: (1) digesting a hippocampal tissue; (2) blowing and dispersing the digested hippocampal tissue so as to obtain a cell suspension; (3) inoculating the cell suspension and culturing the hippocampal tissue for the first time for 2-4h so as to promote cell attachment; (4) changing a first culture solution inside a culture dish with a second culture solution, and culturing for the second time for 24h; (5) adding 1-2ug / ml of cytarabine to the culture dish and culturing for the third time for 24h; and (6) changing half volume of solution inside the culture dish by virtue of the second culture solution, culturing for the fourth time for at least 3 days and meanwhile changing half volume of solution twice every week so as to obtain the primary hippocampal neurons. By virtue of the method, primary hippocampal neurons can be rapidly and efficiently prepared and acquired; and the acquired primary hippocampal neurons are quite suitable to act as a cell model in a patch clamp experiment.

The invention provides a deep hole blasting charging hole sealing device and a using method thereof. The deep hole blasting charging hole sealing device comprises a blasting tube, a detonating cord, an electric detonator, a hole sealing bag, a grouting tube and an exhaust slurry return tube; the blasting tube comprises a plurality of pipeline units which are tightly connected end to end; the detonating cord is arranged in the blasting tube; the electric detonator is located at one end of the detonating cord at the tail part of the blasting tube and is connected with the electric detonator; thehole sealing bag comprises a first hole sealing bag and a second hole sealing bag, and a grouting area is formed in a space between the first hole sealing bag and the second hole sealing bag; one endof the grouting tube penetrates through the second hole sealing bag and is inserted into the first hole sealing bag through the grouting area; and one end of the exhaust slurry return tube penetratesthrough the second hole sealing bag and enters the grouting area. The deep hole blasting charging hole sealing device is convenient to construct and operate, time-saving, labor-saving, low in cost, capable of greatly improving the construction efficiency, and high in hole sealing quality and safety, normal initiation is ensured, and blasting punching and blown-out shot are avoided.

The invention discloses an SF6 high-voltage circuit breaker with a leakage detection function and a leakage repair function. The SF6 high-voltage circuit breaker comprises an SF6 high-voltage circuit breaker main body, an air chamber installed outside the SF6 high-voltage circuit breaker main body, an intelligent leakage repair system and an adhesive supply system, wherein the intelligent leakage repair system is used for detecting SF6 leakage and controlling adhesive repair. According to the SF6 high-voltage circuit breaker with the leakage detection function and leakage repair function provided by the invention, whether leakage occurs in an SF6 arc blowing charmer is monitored through an infrared gas sensitive sensor; electric signals are fed back to the intelligent leakage repair system; a sealant suction pump is driven through a control circuit, so that a sealant can enter the gas chamber through the adhesive supply system, and therefore, a sealant layer can be formed at the outer wall of the SF6 arc blowing charmer of the circuit breaker, and a leakage opening can be plugged; a whole leakage repair process is fully automated, and the efficiency of the working of a power worker in the leakage plugging of the SF6 high-voltage circuit breaker can be effectively improved, and a traditional processing method is improved. Compared with a traditional power SF6 high-voltage circuit breaker leakage plugging mode, the leakage plugging mode of the invention has a lot of advantages.

The invention relates to a fully-integrated nucleic acid detection microfluidic chip and a use method thereof. The fully-integrated nucleic acid detection microfluidic chip comprises a cover plate, a substrate, a bottom plate, a sample box and bubble caps, wherein the cover plate and the bottom plate are respectively stuck to two sides of the substrate; the substrate is provided with a sample outlet, a channel, a sample box groove, at least one bubble cap groove and at least one reaction tank, wherein the channel is communicated with the sample box groove, all the bubble cap grooves and all the reaction tanks, and all the reaction tanks are respectively connected with the sample outlet; the sample box is arranged on the sample box groove; the sample box groove is connected with the at least one reaction tank; the bubble caps are arranged on the bubble cap grooves; the bubble caps are internally filled with a reagent; the bubble cap grooves are respectively connected with the sample box groove and the at least one reaction tank. The invention also provides the use method of the fully-integrated nucleic acid detection microfluidic chip. The fully-integrated nucleic acid detection microfluidic chip can be used for treating a complex sample in an integrated way, and is good in airtight property and simple in structure.

The invention relates to a closed coke quenching and heat energy recycling method and device. The method includes a process for closing a coke tank filled with red coke, a water spraying vaporization cooling process and a coke discharging process after cooling. The device is composed of the coke tank, a top closing cover, a closing mechanism, a tank overturning mechanism, a water spraying system and a steam leading-out system. The top closing cover can be lifted up and down and is connected with the steam leading-out system. According to the closed coke quenching and heat energy recycling method and device, water is directly sprayed in a closed container for vaporization, so that the red coke is cooled quickly, steam capable of being used as a heat source or acting towards the outside is recycled, and meanwhile pollutants are prevented from being exhausted to the atmosphere; an outer edge sealing ring is used for closing the coke tank and the top closing cover capable of being lifted, so that coke quenching is achieved in the state of being isolated from the atmosphere, an opening of the coke tank is overturned up and down, and a coke containing tank can be used as a coke quenching tank at the same time, and action can be completely rapidly. The method and device have the advantages of being capable of recycling heat and not generating pollution. An efficient and low-cost coke quenching and heat energy recycling method and device are provided for coke quenching in the coking industry.

The invention relates to an automatic sealing and storage device which mainly comprises a bearing plate and an L-shaped positioning seat, wherein a press plate is mounted on the right side of the L-shaped positioning seat in a hinging manner; the lower end of the right side of the press plate is connected with an air cylinder; a mounting rack is fixedly mounted above the bearing plate; a hanging bracket is mounted in the mounting rack in the longitudinal direction; positioning bolts are mounted on the hanging bracket; a sliding groove is formed in the central position of the hanging bracket; an L-shaped connecting rod is mounted in the sliding groove in a sliding manner; the upper end of the L-shaped connecting rod is connected with a motor; a fixed rack is welded at the lower end of the L-shaped connecting rod; a raised plate is arranged at the front end of the fixed rack; round pipes are arranged at the front end and the rear end of the raised plate; clamping blocks are mounted on the round pipes in a sliding mode; springs are arranged between the clamping blocks and the raised plate; expansion frame plates are mounted at the lower part of the fixed frame in a horizontal sliding manner; air cylinders are connected with the left ends of the expansion frame plates; and the right parts of the expansion frame plates are propped between the raised plate and the clamping blocks. The automatic sealing and storage device not only can position and fixedly clamp sealing edges of file pockets, but also can automatically fix sealing lines on sealing rings and is convenient to operate.

The invention discloses water-base toy paint and a production process, which is prepared by dispersion resin, propanediol ether, 20% ammonia, deionized water, ruite titanium dioxide, ultra-fine talc, 15-25 ultra-fine calcium carbonate and defoaming agent. The production process comprises adding dispersion resin, propanediol ether, ammonia, deionized water into a material-preparing pot, evenly agitating and mixing in low speed, then adding defoaming agent to evenly mix, adding pigment and filler to form even paint paste through dispersing in high speed, throwing paint paste into a regulating tank after grinding, agitating to mix evenly in low speed, adding deionized water to dilute. The paint of the invention has environmental-friendly water-base, fast coalescence to blocks, excellent sealing and anti-bonding property, can effectively make up the partial weaknesses and shortcomings of substrate material, prevents the generation of wood grease and spurs, has strong adhesion, high painting film, favorable binding resistance, excellent flat surface of paint film, water resistance and stability, and has excellent toughness, no tending to get soft and corrosion resistance and suitable price.

The invention discloses an anodic oxidation nickel-free hole sealing agent. The anodic oxidation nickel-free hole sealing agent comprises, by mass percentage, acetate, benzoic acid, phosphoric acid, sodium benzoate, igepon T, fatty alcohol polyoxyethylene ether, POCA, organic tin, potassium stearate, active diluent and deionized water. The anodic oxidation nickel-free hole sealing agent can well perform closing treatment on an anodic oxide film, the hole sealing speed is high, and no pollution is caused to environment; a product after hole sealing does not turn black or green, the surface is bright and clean, no nickel or fluorine is contained, and the requirement of state environmental protection and an European Union ROHS instruction are met. Besides, igepon T, fatty alcohol polyoxyethylene ether, POCA, organic tin, potassium stearate, active diluent and other auxiliary agents are added, the hole sealing effect and efficiency are further improved, and the surface of a material afterhole sealing is made firmer, more stable and resistant to corrosion.

The invention discloses a cereal crushing and filling machine. The cereal crushing and filling machine comprises a grinding chamber, a support table, a stirring chamber and a conveying belt; the grinding chamber is fixedly connected with the upper part of the support table through welding; the conveying belt is positioned at the lower part of the support table; a sealing device is arranged on theinner side of the support table; the sealing device is positioned at the upper part of the conveying belt; a fixed base is arranged on the conveying belt, and is fixedly connected with the conveying belt through melting; a storage bag is arranged in the fixed base, and is matched and connected with the fixed base through a through hole; the stirring chamber is fixedly connected with the bottom ofthe support table through welding; and a shunting pipe, a first hydraulic pump and a glue storage chamber are arranged at the bottom of the stirring chamber. The cereal crushing and filling machine isprovided with a rotary grinding blade in the grinding chamber; cereals are poured in the grinding chamber; a grinding roller is rotated under the effect of a second motor to drive the rotary grindingblade to cut and crush the cereals; and the crushed cereals are downwards rotated under the effect of the rotary grinding blade to enter the stirring chamber through a connecting pipe.

The invention provides a tunnel type baking unit capable of rapidly balancing pressure between adjacent boxes and a baking line of the tunnel type baking unit. The baking unit comprises two work boxes at a minimum. A protection cover and a two-door transmission valve are arranged between the two work boxes. A first sealing door seals a box opening of the first work box, a second sealing door seals a box opening of the second work box, a first sealing ring is arranged between the first sealing door and the first work box, and a second sealing ring is arranged between the second sealing door and the second work box. The tunnel type baking unit further comprises a pipe, and valves are connected into the pipe in series. When the first work box, the protective cover and the second box body are required to be communicated and pressure differences exist between the first work box, the protective cover and the second work box, the valves are firstly opened, the internal space of the first work box, the internal space of the protective cover and the internal space of the second work box are communicated, the pressure differences among the first work box, the protective cover and the second work box are zero, and then the two-door transmission valve is opened. The tunnel type baking unit has the advantages of being simple in structure and high in drying efficiency.

The invention discloses a vacuum helium filling packaging device and method of a nuclear power plant temperature detector. The device comprises a glove box, a vacuum system, a helium filing system, a clamping device for clamping a quartz glass tube, and a laser heating system for heating the sealing part of the quartz glass tube. The vacuum system and the helium filling system both communicate with the interior of the glove box. The clamping device is located in the glove box. The laser heating system partly extends into the glove box. By means of the vacuum helium filling packaging device, the quartz glass tube is heated and molten through lasers with highly-centralized energy on the premise that it is ensured that a temperature detection wire is not molten, and the problem that in a conventional sealing method, an alloy wire can melt is solved. By means of the vacuum system, the helium filling system and the glove box, the vacuum degree in the quartz glass tube before helium filling and the helium pressure in the quartz glass tube after helium filling can be ensured, and helium leakage can be prevented during quartz glass tube sealing.

The invention relates to a safety can for preventing an explosion of a liquefied petroleum gas cylinder. The safety can comprises a can body and a can cover, wherein a supporting rod is fixedly arranged on the upper part of the outer side wall of the can body; a connecting rod is vertically rotatably arranged on the middle part of the can cover; the can cover can peripherally rotate around the connecting rod and at a top opening of the can body; the upper end of the connecting rod is bent toward the outer side of the can body and the connecting rod is hinged with the supporting rod through a hinge located at one end, away from the can body, of the supporting rod; an opening handle is fixedly arranged at the top of the can cover; a plurality of fixture blocks are fixedly arranged along the peripheral direction of the inner wall of the top opening of the can body; clamping slots corresponding to the fixture blocks are formed in the peripheral side wall of a plug part of the can cover, respectively; gaps are formed between the adjacent clamping slots and in the peripheral side wall of the plug part of the can cover; after the gaps are rotated along with the can cover till the corresponding fixture blocks are located in the corresponding gaps, the fixture blocks are separated from the plug part of the can cover through the gaps; an airtight handle extending toward the outer side of the can body is arranged at the top of the can cover. The safety can has beneficial effects of simple structure, convenience in operation, quick opening and closing and excellent pressure-bearing and airtight property.

The invention relates to the technical field of electronic commerce logistics equipment, and discloses a box sealing device capable of being adjusted according to the height of goods. The box sealingdevice comprises a conveyor belt, an air bag is movably arranged in the conveyor belt, one end of the air bag is fixedly connected with a shell, a first connecting shaft is movably connected in the shell, and the outer side of the first connecting shaft is engaged with a first gear; and a support is rotatably connected to the outer side of the first gear, a second connecting shaft is slidably connected into the support, and a connecting frame is fixedly connected to the outer side of the second connecting shaft. According to the box sealing device capable of being adjusted according to the height of the goods, through connection of the conveyor belt and the connecting frame, box sealing operation can be conducted according to the height of a logistics box, the problem that a traditional box sealing mode, namely manual tearing of adhesive tape, is used for box sealing of a transportation box for electronic commerce logistics is solved, the box sealing efficiency is improved, and practicability is high; and rapid box sealing can be conducted according to the size of the logistics box, equipment is simple, operation is convenient, and the maintenance cost is low.

The invention relates to the technical field of cell culture, and discloses a cell refrigeration constant-temperature test bed, which comprises a workbench, a bearing, an incubator, a clamping assembly, an object taking assembly and a base, the bottom end of the inner wall of the workbench and the outer wall of the bottom end of the bearing are fixedly installed, and the inner wall of the bottom end of the incubator and the inner wall of the bearing are fixedly installed; the outer wall of the clamping assembly is movably connected with the inner wall of the incubator, according to the cell refrigeration constant-temperature test bed, a culture dish is placed in the incubator by a user, fixed placement of the culture dish is achieved under the action of the clamping assembly, the base andthe gravity of the culture dish, the incubator is rotated to align the required culture dish with a membrane sealing table under the action of the bearing, then a sleeve rod is pressed to drive an arc-shaped toothed plate to rotate, and the rotation of a gear is matched with other mechanisms of the object taking assembly to realize the upward movement of the culture dish, so that the cell refrigeration constant-temperature test bed is realized, and rapid membrane sealing is realized when the culture dish is taken out; and secondary infection is avoided.

The invention discloses a temporary and rapid sealing device and method for a mine disaster area. The temporary and rapid sealing device comprises a friction resistant air bag, a high pressure vessel,an air pressure foam generator and two sets of isolation mechanisms. The isolation mechanisms comprise vertical hydraulic isolators and horizontal hydraulic isolators. The temporary and rapid sealingmethod comprises the steps that (1) the positions of the isolation mechanisms are selected; (2) the isolation mechanisms are installed; (3) the suitable friction resistant air bag is selected and thefriction resistant air bag is pre-installed; (4) the disaster area is sealed by the friction resistant air bag; and (5) buffering protection of the friction resistant air bag and the isolation mechanisms is performed. The temporary and rapid sealing device and method for the mine disaster area utilize the two isolation mechanisms to clamp the friction resistant air bag filled with foam, bag-typefilling conformed with the section of a mine roadway is formed by the friction resistant air bag under the action of the foam, various shapes of roadways can be adopted and a good sealing property isachieved, the accident chain reaction can be quickly and effectively cut off, and the spread of toxic and harmful gas is avoided.

The invention discloses a normal-temperature nickel-free hole sealing agent. The normal-temperature nickel-free hole sealing agent comprises the following components: 20-40% of lithium salt, 6-15% ofa pH buffering agent, 0.2-1% of a hole sealing accelerant and the balance of deionized water. Hole sealing operation can be carried out at normal temperature, energy is saved, moreover, the hole sealing speed is high, the efficiency is also high, the closing effect is good, and white frost is not generated; and after hole sealing, a material has a smooth surface, is ash-free and is high in corrosion resistance. On the premise of ensuring that various properties can meet national standards, hole sealing ash cannot be generated, and therefore, adverse effects of hole sealing ash to final use ofthe product are eliminated. The normal-temperature nickel-free hole sealing agent does not contain heavy metallic salt such as nickel and cobalt, is safe and environmentally friendly, and completely conforms to the European Union rohs standard, treating liquid does not contain toxic substances such as nickel, cobalt or other heavy metals, wastewater is toxic-free and harmless, and thus, the normal-temperature nickel-free hole sealing agent can be widely used in the fields of buildings, furniture, 3C home appliances and the like.

The invention discloses an approximately horizontal high-pressure-bearing drill hole sealing device, which comprises a grouting pipe, a fracturing pipe and a slurry return pipe, wherein the outside of a hole opening of a high-pressure-bearing drill hole is provided with an expansion hole; an inner step formed between the expansion hole and the high-pressure-bearing drill hole is provided with a part positioned above an upper busbar of the high-pressure-bearing drill hole; a plurality of grouting holes are formed in the inner end of the grouting pipe in a floral pipe shape; a plurality of water outlet holes are formed in a pipe section, positioned at the inner end of the high-pressure-bearing drill hole, of the fracturing pipe in a floral pipe shape; a flexible pulp blocking section is also arranged on the fracturing pipe, and is positioned between the floral pipe section of the fracturing pipe and the inner end of the grouting pipe; the floral pipe section, provided with a slurry return hole, on the slurry return pipe is positioned in the expansion hole; a pipe opening position of the slurry return pipe is higher than an upper busbar of the expansion hole; and pipe openings of the grouting pipe, the fracturing pipe and the slurry return pipe are exposed outside the expansion hole. The approximately horizontal high-pressure-bearing drill hole sealing device has the beneficial effects that the structure is simple; the hole sealing speed is high; the influence of a contraction joint on the sealing effect can be effectively eliminated through a formed sealing hole; the hole sealing effect is good; and the bearing pressure is high.

The invention discloses an intelligent vertical vacuum packaging device with disinfection function. The bottom of the chamber is threadedly connected with a support column; a control module is arranged above the vacuum chamber; a temperature control module and a counting module are arranged in the control module; a high temperature heater, a temperature sensor and a temperature control module are arranged in the temperature control module. display; the counting module is provided with a counter and a counting display; a vacuum pump is provided on the inner walls of both sides of the vacuum chamber; a heat seal assembly is provided below the vacuum chamber; Cylinder, conduction heating wire and sealing chuck; the conveying device is provided with a conveying belt and a driving motor. The present invention has simple structure, adjustable temperature, sterilizing effect, vacuum sealing, and is hygienic and safe.

The invention discloses a reinforced concrete single-door protective safety sealing door and a using method thereof. The reinforced concrete single-door protective safety sealing doorcomprises a door frame, a baffle, a transverse limiting rod, a door panel, a cover plate, a fixing block, support rods, fixing columns, an adjusting block, a limiting block, a rotating rod,and a sliding block;the baffle is fixed to the inner wall of the door frame, the door panel is arranged on one side of the door frame, a sealing plate is fixed to one side of the door panel, protective boxesare symmetrically fixed to one side of the door frame, the fixing columns are fixed to the interior of the protective boxes, the support rods are arranged in the protective boxes,one ends of the support rodsarearranged on the outer sides of the fixing columns in a sleeving mode, the support rods are rotatably connected with the fixing columns through bearings, and the ends, away from the fixing columns, of the support rodsare fixedly connectedwith the door panel. According to the reinforced concrete single-door protective safety sealing door and the using method thereof,the movement directions of the transverse limiting rod and a longitudinal limiting rod are adjusted by arranginga pushing plate, a limiting plate, and an adjusting plate, thus the door panel and the door frame are sealed, operation is convenient, operation time is saved, and the work efficiency is improved.

The invention discloses an automatic assembly and detection production line of an electric water heater, and relates to the field of general machinery and novel machinery. The production line can be divided into two parts, namely, a final assembly production line and a post packaging line. The production line is characterized by comprising a closed annular automatic conveying plate, two horizontaltransfer machines, a Mitsubishi PLC centralized control system, six detection tables, a six-station automatic constant-temperature water supply device, an airtight detection device, two automatic boxsealing machines and three vacuum sucking cranes. According to the designed production line, the problems that the carrying labor intensity in the electric water heater assembling process is large, the assembling efficiency is low, the energy consumption is large during water boiling by a water heater, and the quality can not be guaranteed are solved, so that the production efficiency is improved, and the production cost is reduced.

The sealing method of gas drainage based on radial strong expansion includes the following steps: (1), determine the sealing position and sealing depth; (2), determine that it has good compactness, high strength, high expansibility and strong permeability Sealing material with four characteristics; (3), install the radial strong expansion drainage sealing device; (4), insert the radial strong expansion drainage sealing device into the borehole to expand and seal the hole; (5), After the expansion of the polyurethane mixed liquid bag is completed, the orifice pipe is connected to the gas drainage pipe for gas drainage. The device adopted by the invention has the advantages of simple structure, fast sealing speed and easy operation, which can make workers skilled quickly. The invention greatly improves the effective sealing length of the drainage borehole, and due to the compactness of the sealing material, it can fully bear the pressure difference between the drilling and the external roadway, preventing the air in the roadway from passing through the sealing material itself. Cracks enter the borehole.