15results about How to "Congeal fast" patented technology

This invention discloses a synchronous grouting material for high-water-pressure ultra-large shield tunnels and its preparation method, belonging to the technical field of cement-based materials. The synchronous grouting material for high-water-pressure ultra-large shield tunnels consists of two components, A and B. Component A is cement slurry, including cement, bentonite, highly active mineral admixtures, viscosity modifiers, stabilizers, and water; component B is a water glass solution. The volume ratio of component A to component B is 10–13:1. The synchronous grouting material of this invention has good water dispersibility, slow gel time, fast setting time, and high water erosion resistance. The gel time and setting time of the slurry are controllable and adjustable, avoiding slurry blockage and quickly and effectively filling the gap between the tunnel segments and the surrounding soil. Simultaneously, the slurry exhibits good cohesion in water-rich environments and is not prone to segregation and dispersion, meeting the performance requirements of synchronous grouting materials for high-water-pressure, ultra-large-diameter shield tunnels.

The application discloses a kind of high density low rebound shotcrete and preparation method thereof, it is related to shotcrete field, and preparation method includes: (1), respectively to cementitious material, fine aggregate, coarse aggregate is using MAA model to be packed and the design ratio of each raw material in interior is obtained;(2), cementitious material, fine aggregate, coarse aggregate and the rebounding agent of design ratio obtained according to step (1) are fully mixed, water, water reducing agent is mixed, then by the way of mixing with pressurized air, incorporate accelerator, obtain high density low rebound shotcrete.The application uses early strength rebounding agent, improves the pumpability of shotcrete, accelerates the early hydration of concrete, under the joint action of alkali-free accelerator, rapidly improves the early mechanical properties of shotcrete, improves shotcrete construction efficiency.Multiple close packing is used, and cementitious material, fine aggregate, coarse aggregate respectively form close packing structure, effectively improve the plastic viscosity of paste and the compactness of concrete.

The utility model discloses a constant-humidity low-voltage power distribution cabinet, a dehumidification module comprises a plurality of dehumidification boxes which are connected in series through connecting pipes, the dehumidification boxes are connected with the narrow-mouth section of a Venturi tube through electromagnetic valves, the wide-mouth section of the Venturi tube is fixedly connected with a heat dissipation box arranged in the power distribution cabinet, the outer wall of the power distribution cabinet is provided with a fan communicated with the heat dissipation box, and the fan is connected with the heat dissipation box through electromagnetic valves. A humidity sensor is installed at the bottom of an inner cavity of the dehumidification box, and when the humidity sensor monitors that the dehumidification module does not work and the humidity in the dehumidification box exceeds the standard, the electromagnetic valve is controlled to be opened to communicate with the dehumidification box and the Venturi tube. Moisture in the dehumidification box is pumped out through the airflow action of the fan, the airflow speed is increased through the action of the Venturi tube, condensation of moisture in air is accelerated, water drops condensed on the inner wall of the Venturi tube slide into the heat dissipation box along the inner wall of the Venturi tube, and the dehumidification efficiency of the dehumidification box is greatly improved. And the service life of the dehumidifying agent in the dehumidifying box is greatly prolonged.

The utility model discloses a gear box with prevent spilling oil ventilation structure, include: gear box body, ventilation subassembly, ventilation subassembly includes the lower ventilation pipe of gear box body upper end fixed connection, the heat dissipation box of lower ventilation pipe upper end fixed connection, the upper ventilation pipe of heat dissipation box upper portion one side fixed connection, the heat conduction frame of movable installation in heat dissipation box, the utility model discloses a gear box with prevent spilling oil ventilation structure, oil gas in gear box body after being transported to heat dissipation box in lower ventilation pipe, will gather in heat dissipation box through the gathering of many wheel gathering board and the adsorption structure after gathering, thereby through the gathering and timely adsorption of oil gas, improve the adsorption uniformity of oil liquid in oil gas, reduce the phenomenon of spilling oil, simultaneously, the heat conduction frame of gathering board and damping suction accessory outer end and the fin of heat dissipation box outer end also can use the quick heat dissipation of heat dissipation box inner end in use to reduce the temperature of internal oil gas, accelerate the condensation of oil liquid.

The present application relates to large industrial open cycle cooling water system, specifically to steam recovery device, circulating cooling system and circulating cooling method. Wherein the steam recovery device of the present application, including: at least one condenser pipe group, the condenser pipe group has condenser pipe, the surface of the condenser pipe is provided with fixedly connected heat exchange fin;Buffer cold water tank, the buffer cold water tank has water inlet pipe, the buffer cold water tank is communicated with the water inlet end of the condenser pipe by first pipeline;The first pipeline is communicated with first cooling water supply pump;The water inlet pipe has first valve, and the first pipeline has second valve;Raw water pool, the water outlet end of the condenser pipe is communicated with the raw water pool by second pipeline;Rotary centrifugal separation layer, the rotary centrifugal separation layer has at least two cyclones, each the cyclone has flow guide pipe respectively;The rotary centrifugal separation layer is vertically above the condenser pipe group.

The present application relates to the industrial solid waste resource utilization and artificial aggregate technical field, specifically relates to a kind of preparation method of artificial aggregate.The specific technical scheme is as follows: including the following steps: (1) the slag, fly ash, red mud are ground and sieved, after heating treatment, mixed with activator, to obtain slurry;(2) the slurry is heated to condense, then, extrusion cutting, rounding, maintenance, alkali immersion, maintenance again, to obtain artificial aggregate.The present application solves the problem of large pore of spherical particles produced by disc granulation in the prior art.

The utility model discloses a steam condensate water separation structure for rice wine distillation, and relates to the technical field of rice wine distillation. The device comprises a cooling shell, a vapor-liquid separation assembly and a water temperature control assembly, a condensation pipe is arranged in an inner cavity of the cooling shell, and the top of the condensation pipe penetrates to the outer side of the cooling shell. Through the vapor-liquid separation assembly, the sealing ring and the plugging ring which are arranged in the separation shell are matched with the sealing plug and the plugging block which are driven by the air cylinder, stage separation is achieved in the vapor condensation process, and when the sealing plug is lifted, the plugging block seals the central through hole of the plugging ring; when the air cylinder is reset, the sealing block releases the sealing of the through hole, the wine liquid is discharged in a one-way mode through the liquid discharging pipe, and the residual steam is independently pumped away through the exhaust mechanism. The steam can be effectively prevented from being mixed with the wine liquid after being secondarily condensed, and the wine body is prevented from being diluted.

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.

The application discloses a preparation method of metal particles with core-shell structure, which comprises the following steps: preheating inert gas flow loaded with high-melting-point metal powder, and then passing into flowing low-melting-point metal vapor to make the low-melting-point metal condense on the surface of the high-melting-point metal powder to form a low-melting-point metal shell layer; the temperature of the low-melting-point metal vapor is T1, the preheating temperature is T2, T1>T2, and the difference between T1 and T2 is 50-200 DEG C. In the preparation method, the gas flow loaded with low-temperature high-melting-point metal powder is passed into the flowing high-temperature low-melting-point metal vapor; due to the temperature difference and the flowing state of the low-melting-point metal vapor, the low-melting-point metal can quickly condense on the surface of the high-melting-point metal, so that a uniform, composition-unsegregated and well-bonded coating layer is formed on the surface of the high-melting-point metal powder, and the mechanical properties of the composite material made of the metal particles with core-shell structure are improved.

The application discloses a fluorogypsum self-leveling mortar and a preparation method thereof, which comprises the following steps: uniformly mixing fluorogypsum, hemihydrate gypsum, ordinary Portland cement, lime, potassium sulfate, a defoaming agent, a water reducing agent, a retarder and cellulose to prepare the fluorogypsum self-leveling mortar. The application improves the strength of the fluorogypsum self-leveling mortar by hydrating the industrial by-product fluorogypsum into dihydrate gypsum and generating ettringite from the dihydrate gypsum and the Portland cement. The application introduces the Portland cement and adjusts the proportion of the Portland cement to promote the setting of the material, generate high-strength ettringite from the fluorogypsum and improve the flowability of the material. Thus, the fluorogypsum self-leveling mortar has good physical performance, mechanical strength, water resistance and construction performance.

This utility model belongs to the field of grinding and dust removal technology, specifically relating to an explosion-proof wet dust collector. It includes a dust removal chamber, with a mounting frame on the top of the chamber to fix a fan. The fan's inlet connects to the inside of the chamber, and its outlet connects to the exhaust port. A dust extraction pipe is installed on the side wall of the chamber, passing through a water extraction pipe and connecting to a circulating water pump. The bottom, top, and middle sections of the chamber are equipped with bottom, upper, and middle partitions at an angle. A liquid seal is formed by submerging the bottom partition by 3mm to 5mm, which, combined with the oblique and reverse airflow channels formed by the multiple partitions, promotes thorough mixing of dust and liquid and condensation of water vapor. The circulating water pump delivers the liquid through a pipe to the nozzle at the inlet of the dust extraction pipe, flushing the inner wall to prevent dust accumulation. This design combines explosion-proof performance with high-efficiency dust removal capabilities, has a compact structure, and low cost, making it suitable for small-scale operating environments such as small and medium-sized processing plants.

The present application relates to the field of subgrade soil treatment, and particularly relates to a subgrade in-situ soil high-performance ecological enhancer, a preparation method and a construction method, the enhancer comprising the following raw materials in percentage by mass: sulphoaluminate cement 45-85%; Portland cement 8-25%; quicklime 3-5%; fly ash 0-15%; silica fume 0-8%; slag powder 0-15%; sodium sulfate 3-5%; sodium silicate 0-2%; lithium carbonate 0-0.8%; polymer enhancer 0-1.5%; silicone powder 0-1.5%; sodium lignosulfonate 0.1-0.3%. The enhancer effectively combines the advantages of sulphoaluminate cement and Portland cement, combines other components, has the characteristics of rapid setting and fast early strength development, can regulate soil strength, meets the requirements of compressive strength and durability in engineering construction, shortens the construction period, and meets the demand of 4-6h rapid traffic under the scene of emergency repair.

This invention relates to the field of bonding equipment technology, and more particularly to a paper bag handle bonding device and method, comprising an operating table, two movable frames, a carrying mechanism, two clamping plates, two extension plates, a moving mechanism, a first conveyor frame, a second conveyor frame, and a conveying mechanism. In use, a roller carrying a paper strip roll is placed on the second placement frame. One end of the paper strip roll is passed under a guide plate, allowing it to pass between the conveyor belt and the first bonding belt. Finally, one end of the paper strip exits between the conveyor belt and the second bonding belt. Simultaneously, a paper rope is wound around the outer surface of the take-up roller, allowing one end of the paper rope to pass through a guide ring and insert into the guide frame. This allows one end of the paper rope to pass between the movable wheel and the guide wheel, and then insert one end of the paper rope between the conveyor belt and the first bonding belt. At this point, the height is adjusted by rotating the adjusting ring, allowing the adjusting frame, supported by an adjusting spring, to cooperate with the first bonding roller to press the first bonding belt and bond the paper rope.

The invention discloses a high-strength water-resistant magnesium oxychloride cement composite material as well as a preparation method and application thereof. The high-strength water-resistant magnesium oxychloride cement composite material is prepared from the following raw materials in parts by weight: 800 to 1200 parts of light calcined magnesia, 600 to 900 parts of 22.5 wt% magnesium chloride aqueous solution, 0.5 to 10 parts of polyethyleneimine and 0.5 to 10 parts of tartaric acid. The preparation method of the high-strength water-resistant magnesium oxychloride cement composite material is characterized by comprising the following steps: weighing the raw material components according to the weight ratio, dissolving the polyethyleneimine and the tartaric acid in a magnesium chloride aqueous solution, then mixing with the light calcined magnesia, and uniformly stirring to obtain the magnesium oxychloride cement composite material. The high-strength water-resistant magnesium oxychloride cement composite material is applied to constructional engineering. The polyethyleneimine and the tartaric acid are introduced as synergistic modifiers, so that the strength and the water resistance of the composite material are remarkably improved.