93results about How to "Good mixing performance" patented technology

The invention relates to high-performance foaming cement, which comprises cement slurry and foams, wherein the cement slurry is prepared from the following raw materials in parts by weight: 100 parts of cement, 10-30 parts of gypsum powder, 10-50 parts of active admixtures, 10-40 parts of mineral admixtures, 1-5 parts of re-dispersible gelatine powder, 0.5-1.5 parts of cellulose ether, 0.2-1.0 part of water reducing agent, 0.1-0.5 part of water repellent and 40-90 parts of water; and the foams are prepared from the following components in parts by weight: 1 part of foaming agent, 0.2-0.8 part of foam stabilizer and 30-50 parts of water. A preparation method of the high-performance foaming cement comprises the steps of: (1) preparing the cement slurry; (2) preparing the foams by using a foaming machine; and (3) mixing and uniformly stirring the cement slurry and the foams according to the weight ratio of 1:(0.1-1), and pouring and molding. The high-performance foaming cement disclosed by the invention has high closed porosity and small shrinkage value, and integrates the performances of heat insulation, sound insulation, water repellent, shock resistance, fire protection, durability, low carbon and environmental protection into a whole.

The invention relates to recycled concrete and a preparation method thereof, and belongs to the technical field of building material concrete. The recycled concrete is prepared from, by weight, 140-150 parts of cement, 580-590 parts of recycled coarse aggregates, 260-270 parts of recycled fine aggregates, 95-105 parts of machine-made sand, 35-45 parts of river sand, 70-80 parts of mineral additives, 15-32 parts of hybrid fibers, 4.2-4.6 parts of concrete additives and 80-90 parts of water. The preparation method includes the steps: firstly, weighing various raw materials according to formula ratio, and mixing the coarse aggregates, the recycled fine aggregates, the machine-made sand and the river sand; secondly, adding the cement, the mineral additives and the hybrid fibers, uniformly stirring mixture, adding the concrete additives and the water, and uniformly stirring mixture to obtain the recycled concrete. The recycled concrete has the advantages that natural materials are saved, and environmental protection is achieved. The prepared recycled concrete is excellent in working performance and mechanical property, stable in quality and low in cost.

The invention relates to emulsified asphalt for longitudinal connecting plate type ballastless track cement emulsified asphalt mortar. The emulsified asphalt comprises the following components in percentage by weight: 60 to 65 percent of asphalt, 0.2 to 5 percent of anionic emulsifier, 0.02 to 3 percent of stabilizing agent, 0 to 4 percent of assistant, and the balance being water; and the wax content of the asphalt is less than or equal to 2.2 percent. The emulsified asphalt for the longitudinal connecting plate type ballastless track cement emulsified asphalt mortar has good emulsifying effect, is not only suitable for storage and usage under normal temperature environment, but also suitable for storage and usage under the environment of lower temperature or higher temperature, and has the advantages of good storage stability, strong temperature adaptability and the like; and the cement emulsified asphalt mortar prepared by the emulsified asphalt has the advantages of long working time, large temperature adapting range, no layering, good filling property, good physical-mechanical properties, good durability, and the like. The emulsified asphalt is applied to a plate type ballastless track, and in particular the longitudinal connecting plate type (CRTS II type) ballastless tracks of high-speed railways and passenger dedicated lines.

The invention discloses phase-change thermal-insulating powder for energy-saving thermoregulation of buildings and a preparing method thereof and relates to the field of building energy-saving thermal insulation materials. The phase-change thermal-insulating powder is characterized in that the phase-change thermal-insulating powder is obtained by coating the surfaces of phase-change material fine particles with nanometer hydraulic gel. By means of a shell formed by the nanometer hydraulic gel, solid-liquid phase-change circulation of a phase-change material is achieved in a relatively independent space, and precipitation and leakage are avoided; particularly, massive adding can be conducted to improve energy-saving thermoregulation property without influencing the strength of a building material. Due to the fact that the shell of the phase-change material is made of the hydraulic gel, the adaptability of the powder in the building material is high, and the powder is well compatible with and can be well mixed with concrete, mortar, putty and paint. Furthermore, a heat conduction agent is added to the hydraulic gel, thermoregulation sensitivity is improved, the phase-change material can absorb or release heat in time, energy is saved, and the temperature in a building can be adjusted to be at a proper level all the time. The production process is easy to control, cost is low, and technical support is provided for the application of the phase-change material to energy-saving thermoregulation of buildings.

The invention discloses a transmission adjusting balance device for a dental molding powder mixing machine, and the transmission adjusting device includes a pulley that can be displaced for changing a belt of the pulley easily and gives a tuning effect to avoid the belt from being elastically exhausted or affecting the mixing performance. The invention also includes a level means for maintaining a balance on both sides of the mixing machine and keeping the performance of the mixing machine to achieve a balanced transmission effect.

The invention provides a sealing strip cladding sizing material and a preparation method thereof as well as a car door sealing strip and a preparation method thereof. The sealing strip cladding sizingmaterial of the invention is prepared from the following components: EPDM (Ethylene-Propylene-Diene Monomer) 3092M, EPDM 4045M, EPDM PX-049, zinc oxide, stearic acid, PEG-4000, a dispersing agent, tackifying resin, paraffin oil R-2291, carbon black N550, sulfur S-80, a moisture absorbent GR, an accelerant M-75, an accelerant DM-75, an accelerant TRA-70, an accelerant TMTD-75, an accelerant BZ-75,an accelerant ETU-80, and a microsphere foaming agent EWE-60GE. The sealing strip cladding sizing material of the invention can implement the light-weight design of a sealing strip product, also hasrelatively good physical properties such as processability and surface quality, and can improve the quality of a sealing strip utilizing the sealing strip cladding sizing material.

The invention provides an SCR (selective catalytic reduction) catalytic converter for diesel engine tail gas treatment. The SCR catalytic converter comprises a shell, a left baffle, a right baffle, a gas inlet tube, a gas return pipe, a gas outlet tube and a catalyst carrier component, wherein the left and right baffles are installed in the shell at intervals and divide the shell into a gas suction cavity, a mixed cavity and a gas exhaust cavity; the left baffle is provided with multiple opening holes which can communicate the gas suction cavity with the mixed cavity; the gas inlet tube is inserted in the shell from the left end face of the shell, penetrates through the left baffle and is closely connected with the right baffle, the gas inlet tube is provided with multiple rows of small holes at the position of the mixed cavity; the gas return pipe is inserted from the left baffle, is closely connected with the right baffle and is provided with multiple rows of small holes; the gas outlet tube is inserted in the shell from the right end face of the shell; and the catalyst carrier component is arranged in the mixed cavity, the axial direction of the catalyst carrier component is inparallel to that of the gas inlet tube and is respectively communicated with the gas suction cavity and the gas exhaust cavity. The SCR catalytic converter provided by the invention has the advantages and characteristics of good flow property, better mixing property of exhausted gas and urea and moderate pressure loss, thus having a certain function of noise elimination.

The invention discloses frost resistant emulsified bitumen which is prepared from a composite emulsifier, and a preparation method thereof. The emulsified bitumen comprises bitumen, a cationic emulsifier, an anionic emulsifier, an amphoteric emulsifier, a nonionic emulsifier, an alcohol and water. The alcohol comprises one or more selected from ethanol, propanol, isopropanol and tert butyl alcohol. With the present invention, a combination of the composite emulsifier and the low molecular weight fatty alcohol is adopted for the emulsified bitumen while diluents such as diesel oil or kerosene and the like are not added, such that time of water evaporation is shortened, a hardening rate of mixture is increased, frost resistance is improved (the emulsified bitumen cannot be frozen at a temperature of -5 to -25 DEG C), original excellent properties such as bonding performance of the bitumen and the like are maintained, and shrinkage and cracking of the mixture due to a low temperature in winner or surface loosening of the mixture due to freeze thawing is avoided. The frost resistant emulsified frost resistant can be used for road curing and road maintenance.

The invention discloses repair mortar for a tap water pipeline PCCP (Prestressed Concrete Cylinder Pipe), and belongs to the technical field of polymer cement mortar. The repair mortar is prepared from raw materials including gelling materials, fine aggregate, heavy calcium carbonate, hydroxyethyl cellulose, water reducing agents, redispersible adhesive powder, lithium carbonate and boracic acid,wherein the initial setting time of the repair mortar is 20 to 30min; the final setting time is 30 to 40min; the 28d intensity is 35 to 50MPa; the processless boding intensity is greater than 1.5MPa.The repair mortar has excellent performance; the prepared repair material has the advantages of safety, high intensity, strong bonding force, excellent cracking resistant performance, corrosion resistance and the like.

The invention discloses an anionic anti-freezing emulsified asphalt and a preparation method thereof. A formula of the emulsified asphalt comprises asphalt, an anionic surfactant, a zwitterionic surfactant, alcohol, cellulose and water. The preparation method comprises steps of: preparing cellulose, alcohol and the zwitterionic surfactant into a paste at room temperature; preparing the anionic surfactant into a liquid soap; and uniformly dispersing hot asphalt, the paste and liquid soap by a colloid mill to obtain the anti-freezing emulsified asphalt. The emulsified asphalt not only has good freezing resistance, good long-term storage performance and small sieve residual amount, but also avoids irritant odor caused by heated volatile alcohols in the preparation of soap liquid through single usage of alcohol and production process of emulsified asphalt.

The invention discloses a method for preparing a hydrophobic silica aerogel cement-based heat-preservation material. The method comprises the following steps: (1) dispersing an oil-in-water surfactant in water so as to prepare a solution; and (2) putting hydrophobic silica aerogel into the solution prepared in the step (1), stirring till the hydrophobic silica aerogel is infiltrated, adding cement, and uniformly stirring, thereby obtaining a product; or putting cement into the solution prepared in the step (1), uniformly stirring, adding the hydrophobic silica aerogel, and stirring till the hydrophobic silica aerogel is infiltrated or wrapped by cement slurry, thereby obtaining a product. The method disclosed by the invention is simple in process, and the prepared hydrophobic silica aerogel cement-based heat-preservation material is good in mixing property, easy to mold and easy in heat-preservation property regulation and control, and can be applied to the field of wall heat preservation.

The invention relates to a cementing compound for pavement layers. The cementing compound is prepared by evenly mixing the following ingredients in percentage by weight: 5-20% of heavy-duty bitumen, 45-55% of organic solvent, 16-28% of terpene resin, 7-21% of composite modifier, and 0.5-2.5% of flame retardant. The bonding strength, the shearing strength, high and low temperature resistance characteristic and processability of the heavy-duty bitumen can be improved through the composite modifier; through the added thickener terpene resin, not only can the viscosity of the heavy-duty bitumen be increased, but also the oxidation resistance and the thermostability can be improved; the compositely modified and thickened bitumen is solvated by adopting the volatilizable organic solvent, the compatibility and dissolubility of the heavy-duty bitumen with the modifier and the thickener can be improved, the pavements can be compact, the pavement layers are permeated and bonded firmly, the ductility is high, the crack resistance is strong, the blending construction performance can also be improved, and the construction work efficiency can be enhanced. The cementing compound is available, simple to prepare, and convenient to popularize in large scales.

The invention relates to the field of machinery, in particular to a method for removing wax deposition dirt of an oil conveying pipeline and an associated gas recycling compressor. The method comprises the following steps that associated gas is extracted up through devices under the condition of good sealing performance, and the associated gas is fed into a pipeline conveying liquid petroleum, wherein the devices include a gas storage cavity, a pumping and blowing piston is arranged inside the gas storage cavity, two one-way valves are distributed on the gas storage cavity, and the two valves are a gas inlet one-way valve (14) and a gas outlet one-way valve (15); the associated gas is fed into the oil conveying pipeline after being compressed by the utilization of the vertical movement of the pumping and blowing piston; gas and liquid moving in the oil conveying pipeline generate an eddy together, therefore, relative constituents of fluid cannot be separated out easily, gas will be broken and burst constantly during the conveying, and oil-gas mixture in the pipeline flows in the eddy mode, so that dirt is not formed, and wax deposition and scale deposition are reduced. Meanwhile, sticky wax dirt falls down due to the impact of bubbles.

The invention discloses a composite anti-freezing emulsified asphalt and a preparation method thereof. A formula of the emulsified asphalt comprises asphalt, a cationic surfactant, an anionic surfactant, a zwitterionic surfactant, alcohol, cellulose and water. The preparation method comprises steps of: preparing cellulose, alcohol and the zwitterionic surfactant into a paste at room temperature; and preparing the cationic surfactant into a liquid soap; and uniformly dispersing hot asphalt, the paste and liquid soap by colloid mill to obtain the anti-freezing emulsified asphalt. The emulsified asphalt not only has good freezing resistance, good long-term storage performance and small sieve residual amount, but also avoids irritant odor caused by heated volatile alcohols in the preparation of soap liquid through single usage of alcohol and production process of emulsified asphalt.

The invention relates to a mixing equipment for well cementation in oil and gas fields, in particular to a high-energy mixer for well cementation in oil and gas fields, comprising a shell, a mortar supply pipe, a water supply pipe and a secondary mortar mixing pipe, wherein the secondary mortar mixing pipe is of a single pipeline structure; and a valve is installed on the secondary mortar mixing pipe. The secondary mortar mixing pipe is changed to be of the single pipeline structure in the high-energy mixer for well cementation in oil and gas fields,, so that the structure is simplified, the flow velocity of secondary mortar-mixed cement paste entering to the shell is increased and the blockage condition is avoided; a water-dividing thimble is fixed on the water supply pipe, so that the manual regulation is not needed, the labor intensity is reduced, the possible error is avoided during the manual regulation, the flow stability is ensured, the flow velocity is increased and the mortar mixing effect is improved; and a hard tungsten carbide alloy layer is coated on the inner wall of each pipe, so that the wear resistance is improved and the service life is prolonged.

The invention discloses a multi-stair circulating type jet reactor which comprises a body, a jet pipe, an external circulating pipe, a circulating pump and a stair circulating pipe, wherein a reaction chamber is arranged in the body; a feeding port, a discharging port, a circulating discharging port and a circulating feeding port are arranged on a wall of the reaction chamber; the jet pipe is inserted into the reaction chamber through the circulating feeding port; a first end of the external circulating pipe is communicated with the circulating discharging port; a second end of the external circulating pipe is communicated with an inlet of the jet pipe; the circulating pump is arranged on the external circulating pipe; the stair circulating pipe is arranged in the reaction chamber; an outlet end of the jet pipe is inserted into the stair circulating pipe through the inlet of the stair circulating pipe. The multi-stair circulating type jet reactor according to the embodiment of the invention has the advantages of excellent mixing performance, low energy consumption, and the like.

The invention discloses a stirrer for cake making and an operation method. The stirrer comprises a frame body, an installation rack fixedly installed at the top of the frame body, a stirring box fixedly installed on the upper end surface of the installation rack, a discharging pipe fixedly installed at an opening in the bottom of the stirring box, an opening and closing plate arranged in the discharging pipe and hinged to the discharging pipe, a driving device installed on the installation rack and a stirring shaft arranged in the stirring box, wherein the two ends of the stirring shaft are rotationally connected with the stirring box, and the stirrer further comprises a plurality of stirrer bodies installed on the ring surface of the stirring shaft in a staggered manner, a cover plate arranged at the opening in the top of the stirring box to prevent stirring splashing, a feeding hopper installed on the upper end surface of the cover plate and communicating with the interior of the stirring box and a feeding pipe arranged on the upper end surface of the cover plate and communicating with the interior of the stirring box. The processing efficiency is high, discharging is convenient,and the labor intensity is reduced; after stirring is completed, a fixed rod slides out of a positioning sleeve; and a handheld part is shifted, the opening and closing plate rotates around the axisof a shaft B, the bottom opening is opened, and stirring and discharging are conducted.

The invention discloses a stuffing machine for making dumpling stuffing, which comprises a stuffing bucket, the stuffing bucket is installed on the base of the stuffing bucket, an insulation device is installed on the outer wall of the stuffing bucket, a working platform is arranged above the stuffing bucket, and the working platform There is a servo motor at the center of the filling mixing barrel on the upper side, the servo motor is connected to the rotating shaft, and the end of the rotating shaft is provided with a stirring wheel. One side of the servo motor is provided with a seasoning quantitative cylinder, and the lower end of the seasoning quantitative cylinder is provided with a collection discharge channel. There is a liquid juice quantitative cylinder on the side, and a spray plate is installed at the lower end of the liquid juice quantitative cylinder. The design of the stirring wheel makes the mixing thorough and the mixing effect is good. The temperature required for the perfect mixing of each raw material is guaranteed through the setting of the heat preservation device.

The invention discloses a crushing mixing machine, which includes a feed inlet, an undercarriage, a cardan shaft, a mixing cylinder, a mixing shaft, hammer seats and a gear box. The feed inlet is fixed at the upper part of the mixing cylinder, the undercarriage is disposed at the middle part of the feed inlet, the gear box is arranged at the lower part of the undercarriage, the cardan shaft is arranged at the middle part inside the gear box, the mixing shaft is disposed at the middle part of the mixing cylinder, the hammer seats are disposed on the mixing shaft, the mixing shaft is fixedly connected to the hammer seats, and the bottom of the mixing cylinder is provided with a discharge port. The crushing mixing machine provided by the invention has the advantages of simple structure, convenient use, and good mixing effect.