78results about How to "Prevent dehydration" patented technology

The invention discloses a micro-expansive internal curing agent for steel pipe self-compacting concrete and a preparation method thereof.The micro-expansive internal curing agent comprises fluidized bed combustion ash and an adhesive component, the fluidized bed combustion ash is soaked in an adhesive solution, and the adhesive component is coated on the surface and in pores of the fluidized bed combustion ash; the mass fraction of viscose components in the viscose solution is 0.1%-1%, and the viscose components comprise 0-80 parts of alginate, 5-30 parts of polyacrylamide and 0-20 parts of carboxymethyl cellulose ether. According to the internal curing agent, the fluidized bed combustion ash is adopted as an internal curing agent matrix, the fluidized bed combustion ash is composed of calcium sulfate and the like, the early shrinkage performance of concrete can be reduced through expansion of the fluidized bed combustion ash, meanwhile, the surface porosity characteristic of the fluidized bed combustion ash is utilized, and viscose formed after alginate, polyacrylamide and carboxymethyl cellulose ether are dissolved in water is combined; pores of the fluidized bed combustion ash are filled with components such as alginate and the like, and the components are crosslinked with calcium ions on the surface of the fluidized bed combustion ash to form water-retaining gel microspheres with core-shell structures, so that the water absorption and water retention properties of the internal curing agent are improved.

The invention relates to an adhesion modified ionic conductive hydrogel for temperature and humidity sensing, a preparation method thereof and a storage device. The invention discloses adhesion-modified composite cross-linking ionic conductive hydrogel and a preparation method thereof, and relates to the technical field of polymer composite materials. The preparation method comprises the following steps: carrying out in-situ polymerization on polyvinyl alcohol, acrylamide, acrylic acid, cellulose, lithium chloride, a covalent cross-linking agent and an initiator at 50-60 DEG C by a one-pot method for 4-6 hours to obtain a precursor; carrying out low-temperature freeze-thaw cycle at-20 DEG C or below for 2-4 times; and carrying out polyol solvent exchange twice to obtain the polymer. Through in-situ polymerization covalent cross-linking and cellulose grafting, reversible physical cross-linking and secondary solvent exchange steps, the adhesive property of the hydrogel and the durability of the hydrogel in a low-temperature and natural dry environment can be improved on the basis of improving the mechanical property of the hydrogel, and the hydrogel can be used for assembling flexible stress-strain, temperature and humidity sensors and has wide application prospects. The invention also provides an adhesion modified ion conductive hydrogel storage device used for temperature and humidity sensing.

The invention relates to the field of food preparation, in particular to a konjak vegetarian meat processing technology which comprises the following steps: cleaning and grinding konjak, then pouring the ground konjak pulp into an ethanol-citric acid solution, soaking for 3-5 hours, performing microwave treatment in the soaking process, and then centrifuging, washing and drying to obtain pretreated konjak powder; adding water into the pretreated konjaku flour, uniformly mixing, and adding a compound enzyme for enzymolysis to obtain enzymolysis konjaku; adding soybean protein powder, vital gluten, fermented starch, mulberry leaf powder and a flavoring agent into the enzymolysis konjak, and uniformly stirring and mixing to obtain a mixture; heating the mixture, and continuously stirring in the heating process until the mixture is formed to obtain a vegetarian meat semi-finished product; and cutting the vegetarian meat semi-finished product into strips, and frying to obtain the konjac vegetarian meat. In the processing process of the konjak vegetarian meat, the probiotic effect of the konjak glucomannan in intestinal tracts is effectively improved, and the health value of the konjak vegetarian meat is improved.

The invention relates to crystalline-amorphous double-network PVA (polyvinyl alcohol) hydrogel. The double networks of the hydrogel are composed of crystalline polyvinyl alcohol and amorphous polyvinyl alcohol. The preparation method comprises the following steps: (1) adding sulfuric acid and triaminophenylboronic acid into a 5-15% polyvinyl alcohol aqueous solution, and uniformly stirring; (2) sealing and storing the mixed solution at 0-10 DEG C for more than 12 hours, and fully cross-linking; and (3) performing freeze-thaw cycle treatment on the mixed solution obtained in the step (2), then soaking the gel in dilute sulphuric acid for more than 24 hours, and finally soaking the gel in deionized water of which the volume is 10 times of that of the gel for 24 hours so as to remove residual sulphuric acid and unreacted monomers in the gel, thereby obtaining the crystal-amorphous double-network PVA gel. According to the method, the crystallinity of the polyvinyl alcohol gel is improved on the premise that the water content is slightly reduced. The highly-compact nanoscale small-pore amorphous PVA network inhibits water loss of the gel in salting-out salt, so that the ionic conductivity of the gel in salting-out salt sodium sulfate is improved by 408.1%.

The fresh cut flower storage device can prevent flowers from being squeezed in the transportation process. The fresh cut flower storage device capable of preventing the flowers from being squeezed in the transportation process comprises a base; the supporting frame is fixedly mounted at the top of the base; the multiple limiting plates are fixedly mounted on the sides, close to each other, of the two supporting frames correspondingly; the plurality of clamping plates are respectively mounted among the plurality of limiting plates in a sliding manner; and the placing frame is fixedly arranged among the plurality of clamping plates. The fresh cut flower storage device capable of preventing the flowers from being squeezed in the transportation process has the advantages that the structure is simple, fresh cut flowers can be stored in a separated mode so that squeezing damage caused by stacking of the fresh cut flowers can be prevented, and meanwhile the fresh cut flowers can be supported so that petals can be prevented from falling off due to pressing of the self weight.

The present invention provides an antibacterial fresh-keeping agent for post-harvest sugar oranges and a preparation and use method thereof, and relates to the technical field of citrus fruit preservation. The antibacterial fresh-keeping agent is composed of carboxymethyl chitosan, sodium alginate, cooked rice stem powder, konjac flour, walnut green peel fermentation extract, and Bacillus amyloliquefaciens, wherein the walnut green peel fermentation extract is obtained by fermenting the walnut green peel with red yeast. The present invention overcomes the shortcomings of the prior art, effectively ensures the fresh-keeping and water-retaining effect of sugar oranges through the combination of various components, natural substances and microorganisms, and effectively inhibits the growth of pythium, thereby achieving a good antibacterial effect.

The invention discloses a method for preparing a cyclohexanone catalyst through cyclohexanol gas phase dehydrogenation. The method comprises the following steps: step 1, preparing an alkaline solution and heating to 60-65 DEG C; step 2, adding a copper-zinc mixed solution and silica sol into the alkaline solution in the step 1 in a parallel flow manner under a stirring condition for precipitation, adding an aging agent after precipitation is finished, and regulating the pH value for the second time for aging to obtain a semi-finished product; and step 3, washing, filtering, drying, roasting and forming the aged semi-finished product in the step 2 to obtain the catalyst, and the content of basic ions in the catalyst is 900-2000ppm. By controlling the content of basic ions in the catalyst, the adverse effect of acid sites in a catalyst system on the catalytic reaction is avoided, so that the technical effects of effectively improving the conversion rate and selectivity of the catalyst in the initial operation stage and the later operation stage and effectively reducing byproducts are achieved.

The invention belongs to the technical field of biology, and relates to a bronchoalveolar lavage fluid (BALF) preserving fluid, a kit and a cytological test method. The preservation solution is composed of TCEP, N-acetylcysteine, EDTA.2Na, trehalose, Proclin300, methanol, sodium chloride and HEPES, and all the components have a synergistic effect to achieve sample viscosity removal, oxidation resistance, corrosion prevention, cell protection and pH stabilization. The preserving fluid is suitable for morphological observation and nucleic acid detection of BALF cells, and can stably preserve samples at room temperature and maintain completeness of cell membranes and clear morphological structure. The kit comprises two preparations which are mixed to form a working solution, and the working solution can be directly used for sample preservation on a sampling site. The cytological test method comprises the steps of sample collection, preservation, centrifugal slide preparation, Wright-Giemsa staining and microscopic observation. Experimental results show that preservation solutions of different formulas are compatible with a chromosome system, the cell morphology is kept stable within 3 days, the dyeing effect is good, and it is proved that the preservation system can remarkably improve the preservation stability and detection reliability of BALF samples and is suitable for cytology and molecular diagnosis application of lower respiratory diseases.

The invention belongs to the field of agriculture, and particularly relates to a wild vegetable natural composite preservative and a preparation method thereof, the wild vegetable natural composite preservative is prepared from the following raw materials by weight: 0.6-0.9 part of a mixed flavone extract, 1-2 parts of L-malic acid, 2-3 parts of sodium lactate, 10-20 parts of a glucose solution, and 20-30 parts of glycerin. The natural composite preservative is prepared by adopting a method for extracting flavone from plants, and the prepared product is healthy and safe to use and has excellent preservative and fresh-keeping effects. L-malic acid is used as a pH regulator, so that the pH value of the preservative can be maintained in a proper range, the growth of microorganisms and the activity of enzymes are inhibited, and the preservation effect is further improved.

This utility model discloses a transport and storage box for Polygonatum odoratum seedlings, including an outer box and a lid. The lid is hinged to one side of the upper end of the outer box. A sponge layer is adhered to the inner side of the lid. Ventilation holes are provided on both sides of the outer box. A plastic inner liner is provided inside the outer box. Several through holes are provided at the bottom of the plastic inner liner. A side panel is detachably installed on one side of the plastic inner liner. A partition plate is fixedly provided on the side of the side panel near the plastic inner liner, which alternately divides the interior of the plastic inner liner. Handles are fixedly connected to both sides of the upper end of the plastic inner liner. The advantages of this utility model are: placing the plastic inner liner inside the outer box and then wetting the sponge layer on the inside of the lid can effectively maintain the humidity environment inside the box and prevent the roots and stems of Polygonatum odoratum seedlings from losing water. Then, through the ventilation holes on the outer box, an air circulation channel is formed inside the box, ensuring ventilation and avoiding stuffiness and mold growth inside the box.

The invention discloses application of aconitic acid in inhibition of browning of fruits and / or vegetables and inhibition of microorganisms. The use method of the aconitic acid is simple, and the aconitic acid only needs to be added into fruit and vegetable pulp or prepared into an aconitic acid aqueous solution to be used for soaking fresh-cut fruits and vegetables which are cleaned, disinfected, peeled and cut. Experiments prove that aconitic acid can effectively inhibit browning of apple, potato and snow pear slurry, fresh-cut apple slices and shredded potatoes, maintain the original color and flavor of the apple, potato and snow pear slurry, fresh-cut apple slices and shredded potatoes, maintain the original flavor of fresh-cut cucumbers and inhibit the total number of bacterial colonies of fresh-cut fruits and vegetables; the medicine has the advantages of safe use and no toxic or side effect. The treatment method for inhibiting browning and microorganisms of the fresh-cut fruits and vegetables by using aconitic acid provided by the invention is simple, easy to operate and popularize, low in cost and suitable for large-scale production and use.

The utility model discloses a transplanting device for garden planting, and relates to the technical field of transplanting devices, the transplanting device comprises a frame body, a pushing handle, a pulley, a connecting plate and a supporting plate, the surface of the connecting plate is provided with a fixing device, the fixing device comprises a connecting column, the connecting column is fixedly connected with the supporting plate, and the supporting plate is fixedly connected with the connecting column. A movable plate is fixedly connected to the other end of the connecting column, a limiting groove is formed in the surface of the movable plate, a rotating hole is formed in the surface of the movable plate, a sliding rod is rotationally connected to the surface of the rotating hole, a first clamping plate is fixedly connected to the surface of the sliding rod, and a second clamping plate is rotationally connected to the surface of the sliding rod; the surface of the second clamping plate is fixedly connected with a second spring, the other end of the second spring is fixedly connected with the first clamping plate, and the seedling transplanting device solves the problems that the seedling transplanting device is poor in fixing effect in the transportation process, so that the roots of seedlings are prone to being damaged by collision, and branches and leaves are prone to being damaged due to toppling.

The utility model discloses a transplanting device for cultivating high-quality tea seedlings in an ecological tea garden, which is characterized in that support wheels are arranged at the bottom of a transplanting vehicle main body, a water tank is arranged at the upper part in the transplanting vehicle main body, a support platform for placing tea seedlings is arranged at the top of the water tank, and the transplanting vehicle main body is fixedly connected with an outer baffle plate; according to the transplanting device for cultivating the high-quality tea seedlings in the ecological tea garden, the conditions that in the prior art, in the actual use process, time is still needed in the transplanting process, and the transplanting survival rate of later transplanted plants is possibly reduced due to water loss are improved; the tea seedlings and the roots of the tea seedlings are moisturized in a continuous water spraying mode, water loss of the tea seedlings is avoided, meanwhile, the mud stirring box is further arranged, the roots can be wrapped with mud conveniently during transplanting, and the transplanting survival rate can be effectively increased.

The invention relates to a wetting liquid formula for improving a sample preservation effect and a preparation method. The wetting liquid formula comprises 15-50% of an anti-aggregation reagent; 5%-10% of a buffer solution; 1%-20% of an ionic strength maintaining reagent; 0.01% to 0.5% of an antimicrobial agent; 0.1%-5% of a mucus dissolving reagent; 0%-0.5% of a cleaning agent and 0.1%-0.5% of penicillanes The content percentage is calculated according to the amount of the prepared 1L solution. The sample conveying time efficiency and stability can be improved, and more flexible sample treatment and sample conveying time can be provided for a user.

The application relates to the field of food preparation, in particular to konjac meat processing technology, comprising the following steps: konjac is cleaned and ground, then the ground konjac paddle is poured into an ethanol-citric acid solution and soaked for 3-5h, during the soaking process, microwave treatment is carried out, then centrifugation, washing, drying obtains pre-treated konjac flour; water is added to the pre-treated konjac flour, and complex enzyme is added for enzymolysis after mixing, and enzymolysis konjac is obtained; soy protein powder, gluten powder, fermented starch, mulberry leaf powder, flavoring agent are added to the enzymolysis konjac, stirring and mixing are uniform, and a mixture is obtained; the mixture is heated, and continuously stirred to molding during heating to obtain a semi-finished vegetarian meat; the semi-finished vegetarian meat is cut into strips, and konjac meat is obtained after frying. The present invention is in the processing process of konjac meat, effectively improves the prebiotic effect of konjac glucomannan in the intestinal tract, and improves the health value of konjac meat.

This invention discloses a washing machine drainage control method and a washing machine. The washing machine operates a drainage program, with a drain pump installed at the bottom of the outer tub. Its outlet is connected to a drain hole in the outer tub via a drain pipe, which is inclined. The washing machine's drainage program is divided into four stages. Combined with structural modifications to the washing machine, the control method includes: Stage 1: Starting the drain pump and cyclically starting and stopping; Stage 2: Starting the motor and running at low speed, cyclically rotating with long runs and short stops; Stage 3: Controlling the motor to rotate with short runs and long stops; Stage 4: Controlling the motor to run at high speed. During Stages 2, 3, and 4, the drain pump is controlled to rotate with long runs and short stops. This invention, through structural modifications and drainage timing control, allows water in the drain pipe to flow back into the pump chamber due to the inclined structure of the drain pipe during the drain pump's stop period, pushing air out of the pump's inlet and into the outer tub, thus solving the problem of air trapped in the pump.

This utility model relates to a partitioned mycelial bridge root box, comprising a main body and a microporous partition inside the main body. The microporous partition divides the main body into a donor chamber, an intermediate mycelial bridge chamber, and a recipient chamber. The microporous partition has pores and is vertically installed inside the main body, isolating the donor chamber from the intermediate mycelial bridge chamber and from the recipient chamber. Rhizosphere dialysis probe channels are provided on the side walls of the donor chamber, the intermediate mycelial bridge chamber, and the recipient chamber. A top cover is provided on the top of the main body, with a gas exchange inlet and a gas exchange outlet. The lower end of the gas exchange inlet is connected to a diffuser. This novel design uses a vertically installed microporous partition to separate the three chambers. The pore size allows mycelia to pass through while blocking roots, ensuring isolation and connectivity. The inlet connects to the diffuser for uniform gas supply, a valve controls the on / off state, and the outlet exhausts air through a guide pipe. A detachable connector facilitates connection to external equipment.

The invention discloses a universal energy-saving dining stove for dry and wet applications, and specifically relates to the technical field of food processing equipment. The stove comprises a dining stove body component A, wherein a dining stove body component B is placed inside the dining stove body component A, an electric heating pipe is fixedly connected to the lower part of the dining stove body component B, an upper support plate is fixedly connected to the lower part of the dining stove body component B and located on the top of the electric heating pipe, and the top of the electric heating pipe is in contact with the bottom of the upper support plate, and the volatilization of water maintains the necessary humidity, thereby avoiding dehydration and drying of food, and the high-temperature boiling and evaporation of water should be avoided, thereby generating a large amount of condensed sweat that is difficult to handle, and a water basin is located in the central area, because the area is far away from the surface of the heating pipe and the temperature is low, so that "water volatilization" rather than "water evaporation" is achieved, and the "adding water, changing water, cleaning" structure is simplified when the product is used, the manufacturing process is simplified, no special mold investment is required, and the cost is reduced.

The invention provides an early warning method for blood purification equipment and the blood purification equipment, and the early warning method comprises the steps: obtaining the initial weighing data of a scale at the previous moment of the current moment and the initial capacity of a pump, obtaining the final weighing data of the scale and the final capacity of the pump at the current moment, according to the initial weighing data of the scale and the ending weighing data of the scale, calculating the weight change value of the scale within a first preset duration, according to the initial capacity and the ending capacity of the pump, calculating the capacity change value of the pump within the first preset duration, and according to the weight change value of the scale and the capacity change value of the pump, determining the action of the scale. And if the action of the scale is determined to be that the scale is not moved and / or touched, generating a corresponding early warning alarm. Whether the scale is not moved or touched is determined by determining the weight change value and the capacity change value within the first preset duration, and if the scale is not moved or touched, early warning can be quickly performed, so that the dehydration condition of a patient is prevented.

This invention relates to the field of soybean protein product processing, and discloses a method for preparing steamed soybean protein tofu and its low-temperature segmented braising and roasting process. The method includes premixing soybean protein isolate with an ice-water mixture, sequentially adding sodium pyrophosphate, salt, and D-anhydrous glucose and chopping, adding soybean oil and sodium stearoyl lactylate and chopping, adding cold-soluble κ-carrageenan and glucono-delta-lactone, mixing and discharging, pre-gelling by heat induction, and then demolding and cutting to obtain the embryo. The embryo is then mixed with a compound flavored braising sauce and braised in two stages, followed by a first-stage dehydration and a second-stage roasting. It is then vacuum-packed and sterilized under pressure and cooled under pressure before being removed from the oven. This invention utilizes soybean protein isolate combined with an ice-water mixture and cold-soluble κ-carrageenan to form a microemulsion system. During heat induction and cooling, an interpenetrating double-network gel structure is constructed, controlling the temperature rise to prevent premature thermal denaturation and inducing uniform cross-linking to avoid pores, thereby improving the system's water and oil holding capacity and elasticity.

The invention provides an antibacterial and fresh-keeping fungicide for postharvest rock candy oranges as well as a preparation method and a use method of the fungicide, and relates to the technical field of fresh keeping of citrus fruits. The antibacterial and fresh-keeping microbial agent is prepared from carboxymethyl chitosan, sodium alginate, cooked zizania aquatica powder, konjaku flour, a walnut green seedcase fermentation extract and bacillus amyloliquefaciens, wherein the walnut green seedcase fermentation extract is prepared by fermenting walnut green seedcases with rhodotorula mucilaginosa. According to the present invention, the defects in the prior art are overcome, the fresh-keeping and water-retention effects on the rock candy oranges are effectively ensured through the compounding of the components, the natural substances and the microorganisms, the growth of pythium is effectively inhibited, and the good antibacterial effect is achieved.

This invention discloses a silicate colloid for high-solids-content, high-modulus composite fire-resistant glass and its preparation method, relating to the field of composite fire-resistant glass technology. Specifically, it describes a silicate colloid for high-solids-content, high-modulus composite fire-resistant glass and its preparation method. The colloid, by weight percentage, comprises a silicon source, water, glycerol / ethylene glycol / polyethylene glycol / polyglycerol, water-soluble organic acids and salts, water-soluble metal oxides or hydroxides, and alkali metal hydroxides, wherein the solids content is 60-75% and the modulus is 4.0-5.5. The preparation method includes: uniformly mixing the silicon source, water, additives, and functional additives, then adding alkali metal hydroxides, reacting at 50-90°C to obtain a prepolymer solution, followed by vacuum degassing. The viscosity is adjusted to the desired range by controlling the reaction conditions. This prepolymer solution is suitable for pouring or coating processes. After curing, the colloid forms a fire-resistant glass core layer. The resulting fire-resistant glass has advantages such as high light transmittance, ultra-thinness, dense foaming, low-temperature resistance, high weather resistance, and long lifespan.

The application discloses a diversion tunnel alternating flow staging gate closing water storage structure and method, relates to the technical field of water conservancy and hydropower construction, and comprises a first diversion tunnel, a second diversion tunnel and a three-face stoplog gate, the first diversion tunnel is provided with a first water inlet and a first water outlet at two ends, and is further provided with a third water inlet, the setting height of the third water inlet is higher than that of the first water inlet; the first diversion tunnel is further provided with a first gate slot and a third gate slot, and the first gate slot and the third gate slot are located at the front and rear of the third water inlet respectively; the second diversion tunnel is provided with a second water inlet and a second water outlet at two ends, the setting height of the second water inlet is higher than that of the first water inlet and is lower than that of the third water inlet; the second diversion tunnel is vertically provided with a second gate slot at the second water inlet; and the stoplog gate is formed by parallel and coplanar splicing of a plurality of baffles. The application can solve the problem that the downstream river channel cannot be effectively prevented from being dehydrated and cut off under the premise of ensuring economy and safety.

The invention discloses an irrigation and drainage integrated device driven by photovoltaic solar energy, and relates to the technical field of irrigation and drainage, the irrigation and drainage integrated device comprises a fixed pipe, the outer side of the fixed pipe is fixedly connected with a connecting pipe, the inner wall of the connecting pipe is fixedly connected with a middle pipe, the inner wall of the middle pipe is fixedly connected with an inclined plate, and the outer side of the fixed pipe is provided with a fixed ring; a cylinder is fixedly connected to the inner wall of the fixing ring, an inner cavity is formed in the inner wall of the fixing ring, a round hole is formed in the bottom of the inner cavity, a connecting rod is fixedly connected to the inner wall of the fixing ring, a round pipe is fixedly connected to the inner wall of the fixing ring, the connecting rod is fixedly connected with the middle of the round pipe, an elastic plate is fixedly connected to the outer side of the round pipe, and a sliding groove is formed in the inner wall of the round pipe. According to the irrigation and drainage integrated device driven by the photovoltaic solar energy, the connecting position of the connecting pipe and the circular pipe is located above the connecting pipe, when water supply is rapidly closed, water can be prevented from continuously leaking under the action of gravity at the moment, and dripping of residual water in the fixing ring is reduced.

The present invention belongs to the technical field of energetic ion compound synthesis application, and in particular, relates to a method for synthesizing energetic ion compounds by bipolar membrane electrodialysis filtration plus electric reaction. The present invention provides a method for synthesizing energetic ion compounds by bipolar membrane electrodialysis filtration plus electric reaction, utilizing potential difference, by bipolar membrane-cationic membrane electrodialysis filtration plus electric reaction, to realize the transfer and removal of metal ions; or by bipolar membrane-anion membrane electrodialysis filtration plus electric reaction, to realize the transfer of anionic energetic compounds, and finally realize the synthesis of anionic energetic compound ammonium salt or hydrazine salt and the removal of metal ions, avoiding the use of organic solvents, avoiding the drying and dehydration of energetic compounds, avoiding the yield loss caused by repeated transfer of solid materials and the danger of operation. At the same time, the energetic ion compounds are separated and concentrated by membrane filtration concentration, effectively avoiding the problems of high energy consumption, easy decomposition, and easy explosion generated in the conventional concentration process.

The utility model belongs to the technical field of file sterilization, and particularly relates to a sterilizing and insect-killing device for paper files, which comprises a sterilizing and killing chamber, a sterilizing and insect-killing device, a sterilizing and insect-killing device, an insect-killing device and an insect-killing device, the top of the sterilizing and killing chamber is provided with a plurality of air inlets, and the side wall of the sterilizing and killing chamber is provided with air outlets; the gas inlet pipe is connected with the gas inlet, and the other end of the gas inlet pipe is connected with nitrogen output equipment; the air extracting pump is arranged on the outer side of the sterilizing chamber, and a connecting pipe is arranged between the air inlet end of the air extracting pump and the air outlet in a communicating mode; the sealing door is hinged to the front face of the sterilizing chamber and used for taking and placing the paper archives; the air delivery pipe is arranged on the outer wall of the sterilizing chamber and is communicated with the interior of the sterilizing chamber; and electromagnetic valves are arranged on the connecting pipe, the air inlet pipe and the air conveying pipe. And the effects that the paper archives can be disinfected and killed, and the paper archives are prevented from being damaged are achieved.

The invention provides a proton exchange membrane battery system with a novel cathode flow channel design, which comprises a battery body, a controller and a driver, and the controller and the driver are arranged above the battery body; the battery body comprises a plurality of fixed clamping plates, a galvanic pile, a hydrogen interface, a cathode product outlet and a control platform, and the fixed clamping plates are arranged on two sides of the galvanic pile; the control platform is mounted at the upper end of the fixed clamping plate, and the control platform is positioned on the upper side of the electric pile; the hydrogen interface is mounted on the front side of the upper part of the control platform, and the hydrogen interface is communicated with the anode of the electric pile; according to the present invention, the groove structure is arranged in the electric pile, such that the airflow flowing through the flow channel generates the vortex in the flow channel, the densities of the colder air and the water vapor are relatively large so as to make the colder air and the water vapor flow near the cathode, and the density of the air with the high temperature is low so as to be far away from the cathode; therefore, temperature suppression and water management of the cathode are realized.

This invention provides a pressurized sealing device and method for slurry transport pipelines. The sealing device includes a repair pipe, two sets of drive systems disposed at both ends of the repair pipe, and two sets of pipe-clamping and fixing mechanisms. The repair pipe is fitted over the leak area of ​​the damaged pipe, and at least two sets of sealing strips are provided between the repair pipe and the damaged pipe. The leak area of ​​the damaged pipe to be sealed is located between at least two sets of sealing strips. The drive system includes multiple sets of second hydraulic cylinders, each set of second hydraulic cylinders having one end hinged to a pipe-clamping frame and the other end hinged to a corresponding force-bearing seat on the repair pipe. The two sets of pipe-clamping and fixing mechanisms provide positioning gripping points on both sides of the leak point in the slurry transport pipeline, providing force points for the second hydraulic cylinders. The repair pipe covers the damaged slurry transport pipeline, and the sealing operation of the pipeline transport system is completed under the drive of the second hydraulic cylinders. This invention can complete pressurized sealing operations of slurry transport pipelines, preventing pipeline blockage and ensuring the safety of the slurry transport system.

The present invention relates to the field of lead-acid batteries, and in particular to a narrow labyrinth structure of a battery that can prevent tipping and acid leakage. The narrow labyrinth structure is used between the middle cover and the upper cover of the battery, and includes a labyrinth surface, an exhaust passage, and an exhaust chamber. The labyrinth surface is arranged on the middle cover, the labyrinth surface is an inclined surface, the end of the labyrinth surface facing the acid return port is the lower end, the exhaust passage is located at the end of the labyrinth surface away from the acid return port, the exhaust passage is connected to the exhaust chamber, and a ventilation gap is provided at the position of the upper cover corresponding to the exhaust passage, and the bottom surface height of the exhaust chamber is higher than the bottom surface height of the exhaust passage. It also relates to a battery that can prevent tipping and acid leakage. The exhaust chamber of the present invention is independently arranged relative to the labyrinth surface, avoiding the problems of direct discharge of acid mist and leakage of acid liquid after the battery tipping over, thereby making the use of the battery safer and more reliable, and at the same time making the battery less likely to lose water. With the continuous use of the battery, the battery is better kept with a rich electrolyte, thereby improving the service life of the battery.

The application relates to the technical field of concrete pavements, and discloses a reinforced material for concrete pavements and a use method thereof. The reinforced material comprises dry materials and wet materials. The dry materials are as follows: 200-400 parts of white cement clinker, 70-120 parts of modified mineral powder, 300-700 parts of tailing sand, 50-140 parts of lithium slag powder and 5-50 parts of pigment. The wet materials comprise component 1 and component 2. The component 1 is composed of 10-30 parts of nano silicon oxide sol, 10-20 parts of polyaluminum, 10-30 parts of sodium silicate, 5-20 parts of aluminum sulfate, 5-10 parts of urea and 100-300 parts of water. The component 2 is composed of 5-10 parts of glue powder, 5-10 parts of 3-aminopropyltrimethoxysilane and 80-90 parts of water. The dry materials are sprayed on the surface of the concrete by a spraying machine or are uniformly vibrated on the surface of the concrete by a vibrating screen, and the wet materials are sprayed on the surface of the concrete by a sprayer, and then are collected and smoothed, so that the problems of low strength, easy falling and alkali return of the traditional reinforced material are solved.