39results about How to "Reduced pumping resistance" patented technology

The invention discloses a gas extraction center divided-flow type grouting and hole sealing device which comprises an extraction pipe, a grouting plug, a left bag and a right bag, wherein the extraction pipe penetrates through the left bag and the right bag, a multifunctional valve is arranged in the extraction pipe, and the left side and the right side of the multifunctional valve are respectively connected with a left flow division pipe and a right flow division pipe; the left flow division pipe and the right flow division pipe are both sheathed on the extraction pipe, and the inner diameter of the left flow division pipe and that of the right flow division pipe are both greater than that of the extraction pipe so as to form a slurry passage among the left flow division pipe, the right flow division pipe and the extraction pipe; and a grouting insertion pipe is inserted into the extraction pipe. Through the gas extraction center divided-flow type grouting and hole sealing device, more effective grouting and hole sealing of drilling holes in the hole sealing section can be realized, and the generation and the propagation of leakage cracks around the drilling holes can be better prevented. The invention also provides a hole sealing method by using the gas extraction center divided-flow type grouting and hole sealing device. Through the method, high stress regions are produced around the drilling holes in the hole sealing section, the permeability of coal around the drilling holes in the hole sealing section is reduced, and the purpose of effectively grouting and sealing the drilling holes in the hole sealing section is realized.

The multifunctional super concrete plasticizing agent of carboxylic acid comb grafting copolymer is prepared through the water free radical copolymerization of the following monomers: monomer A with the general expression I in 10-40 wt%, monomer B with the general expression II in 30-70 wt%, monomer C with the general expression III in 10-50 wt%, monomer D with the general expression IV in 3-15 wt%, monomer F with the general expression VI in 0-15 wt%, and reactive defoaming agent E in 0.2-2 wt% of the sum of foregoing five kinds of monomer. The present invention can reduce the shrinkage of concrete, and has good adaptability on cement and admixture material, good dispersivity and slump maintaining performance, high weeping resistance and resolution resistance, small pumping drag, product yield near 100 % and no waste produced in the production process.

The invention relates to concrete synergist. Components of the concrete synergist, mixed by weight, include 8%-12% of triisopropanolamine, 25%-35% of polymeric alkylol amine, 5%-15% of modified polycarboxylic acid water reducer, 25%-35% of black liquor extractive and water. The concrete synergist, which is prepared by means of scientific proportioning and mixing of all components, is non-poisonous, free of abnormal odor, green and healthy. When concrete added with the concrete synergist is compared with traditional concrete, a concrete grade is increased on the premise of the same consumption, and 10%-15% of cement consumption is reduced on the premise of the same grade, so that pumping resistance is small during conveyance, workability of the concrete is improved, the concrete is resistant to bleeding, concrete cracks are decreased, all components of the concrete are more disperse, and the concrete is integrally uniform after hardening.

The invention discloses a polymer repairing mortar. The polymer repairing mortar comprises 400-500 parts of cement, 500-600 parts of quartz sand, 1-5 parts of a high-molecular polymer, 5-15 parts of a polymer, 1-5 parts of silicon micropowder and 0.1-0.3 parts of wood fiber, wherein the high-molecular polymer is cellulose ether, and the polymer is re-dispersible latex powder. The purpose of the invention is to provide the polymer repairing mortar with the characteristic of long service life and no cracking, and a preparation method thereof.

The invention provides dry-mixed mortar prepared from industrial solid waste. The dry-mixed mortar is characterized by being prepared from materials in parts by weight as follows: 100 parts of cement, 300-400 parts of river sand, 50-100 parts of steel slag, 0-50 parts of iron mine tailings, 0-50 parts of glass powder, 1-2 parts of an interface reinforcing agent, 1-2 parts of an exciting agent, 0.1-0.5 parts of a water retaining agent, 1-2 parts of a water reducing agent and 0.1-0.3 parts of reinforcing fibers. According to the dry-mixed mortar, the industrial solid waste is fully utilized as aggregate to replace natural river sand, environmental protection is facilitated, resource recycling is realized, and meanwhile, performance such as the freezing resistance, the permeability resistance and the like of the dry-mixed mortar is improved through addition of the industrial solid waste.

The invention relates to improved Venetian plaster and the application thereof. The improved Venetian plaster comprises the following components in parts by weight: 20-50 parts of sulphoaluminate cement, 20-35 parts of Portland cement, 0.2-1 part of water reducer, 1.5-4 parts of silica fume, 1-4 parts of slag powder, 1-3 parts of coal ash, 0.1-1 part of thickener, 1-4 parts of redispersible powder, 20-35 parts of silica sand powder, 0-5 parts of organic color paste and 0-5 parts of inorganic color powder, wherein the ratios of the slag powder and coal ash to the total weight are both greater than or equal to 2%. The improved Venetian plaster disclosed by the invention has good water resistance, oil resistance and weather fastness, is safe, environment-friendly, durable, elegant and luxury, has unique artistic decoration effect, can replace traditional coating and tiles, and can be applied to inner wall decoration of buildings.

The process of preparing nanometer capsule phase change material emulsion includes adding the oil phase liquid compounded with olefin monomer, hydrophilic monomer, alkane, initiator and n-lauryl mercaptan into the mixed liquid of emulsifier and deionized water via stirring and ultrasonic dispersing to obtain micro emulsion, introducing nitrogen to the micro emulsion system to eliminate oxygen via stirring, reflux condensing, heating to 65 deg.c and constant temperature polymerization reaction for 5 hr, and cooling naturally to room temperature to obtain the nanometer capsule phase change material emulsion. Thus prepared nanometer capsule phase change material emulsion has nanometer size, stable performance, great phase change enthalpy and wide application in latent heat functional hot fluid, heat accumulating and temperature regulating fabric, energy saving building wall and other fields.

The invention discloses a special binder for unfired refractory brick masonry of an inside liner of a rotary kiln. The special binder comprises the following raw materials in parts by weight: (1) 1-5 parts of fluorite of 0.8-1mm, (2) 10-25 parts of floating bead of 0.425-0.633mm, (3) 10-15 parts of sub-white fused alumina of 0.8-1mm, (4) 4-6.5 parts of mullite of 0.088mm, (5) 25-30 parts of clay powder of 0.425-0.633mm, and (6) 15-18 parts of silica fume of 0.85-1mm. A preparation method comprises the following steps of: 1) preparing the raw materials of the special binder for unfired refractory brick masonry into the required specifications respectively to obtain a prepared material; and 2) sufficiently mixing the prepared material obtained by the step 1), and packing to obtain the special binder for unfired refractory brick masonry. The special binder disclosed by the invention has the beneficial effects of strong caking property, high anti-peeling strength, oxidation resistance, erosion resistance and good wear resistance, is convenient to construct, and reduces the labor intensity of workers and the construction conditions.

The invention relates to a multi-stage totally-enclosed mining drilling and dust removal device, which comprises a box body, a gravity dust removal chamber, a water bath dust removal chamber and a spray dust removal chamber. In the coal mine drilling process, the generated dust-containing gas enters a gravity settling chamber through an air inlet, and larger granular dust is firstly removed, and discharged from a slag discharge hopper at the bottom under the action of the gravity and a baffle plate. And then the gas sequentially enters the water bath dust removal chamber and the spray dust removal chamber to realize the separation of gas and dust, and the discharge of water vapor is reduced through a gas-water separator at an air outlet. The clean gas in the gas-water separator enters an extraction pipeline, dust particles are deposited at the bottom of the container, and the dust particles are collected and discharged from a slag digging port. The multi-stage totally-enclosed mining drilling and dust removal device can effectively reduce the dust content of the construction roadway and avoid dust blocking the extraction pipeline, and has the advantages of low cost, easy operationand convenient movement.

The invention relates to a novel lubricant for concrete pumping pipelines. The novel lubricant comprises the following component in weight percentage: 4-8% of polyacrylamide, 2-6% of cellulose ether,30-50% of a dissolving promoter and 36-60% of drag-reduction microspheres; wherein the drag-resistance microspheres adopt inorganic microspheres with high strength and smooth surfaces, thereby obviously reducing the frictional resistance between concrete and pipelines. The novel lubricant for the concrete pumping pipelines provided by the invention has the advantages of being low in cost, rapid indissolution, green and environmental-friendly, easy to apply in field construction, capable of significantly reducing concrete pumping resistance, and the like.

The invention discloses a cement-based composite material for trenchless centrifugal spraying repair of a pipeline. The cement-based composite material is prepared from the following components in parts by weight: 900 to 940 parts of cement, 140 to 160 parts of viscosity reducer, 370 to 390 parts of thickener, 1500 to 1600 parts of sand, 0.5 to 2 parts of thixotropic agent, 60 to 100 parts of setting-adjusting early strength agent, 6 to 12 parts of fiber, 30 to 40 parts of water reducing agent and 260 to 280 parts of mixing water. The invention further discloses a preparation method of the cement-based composite material for pipeline trenchless centrifugal spraying repair. According to the invention, the sprayability and early strength of the high-performance cement-based composite material can be effectively improved, so that the rebound rate is reduced, the one-time spraying thickness is increased, the compactness is improved, and continuous centrifugal spraying construction of the high-performance cement-based composite material is realized.

The invention provides a preparation method of a water-resistant anti-seismic gypsum-based self-leveling material. The preparation method comprises the following steps: mixing and stirring 100-120 parts by weight of anhydrous phosphogypsum, 10-15 parts by weight of silica fume, 20-30 parts by weight of modified ultrafine steel slag and 1-5 parts by weight of straw powder nano crystals for 10-20 minutes to obtain a solid mixture A; step 2, taking 0.1-0.5 part by weight of a defoaming agent, 0.4-0.8 part by weight of a water reducing agent, 0.2-0.6 part by weight of a water retaining agent, 6-8parts by weight of a composite excitant and 70 parts by weight of water, stirring for 10-20 minutes, and uniformly mixing to obtain a liquid mixture B; and step 3, mixing and stirring the solid mixture A and the liquid mixture B obtained in the step 1 and the step 2 for 5-10 minutes to obtain the anti-seismic gypsum-based self-leveling material. According to the method, the gypsum-based self-leveling material prepared by a specific construction process has good flowability, stability, high strength and high shock resistance.

The invention relates to a magnetic suspension soft-sealing tubular belt conveyor manufacturing process method and a water delivery power generation device, and belongs to the field of tubular belt liquid conveying. A system can convey water from a low position to a steel structure frame body water tank or a reservoir at a high position of a high mountain for afforestation of barren mountains in a long distance without limitation, can convey solid materials such as superfine powder and the like, can also achieve multi-stage multi-unit water storage power generation by utilizing the fall, is an upgrading and updating product of a multi-stage pumping station, can be in butt joint with various pressure-resistant water pipes for installation and use, thoroughly changes the traditional process of complex water pumping engineering, large investment and high cost of the traditional multi-stage pumping station, and provides an effective way for large-area rapid afforestation of the barren mountains and distributed power generation. The construction speed is high, the occupied area is small, the requirement on a water source is not strict, compared with traditional water pumping and water storage power generation, the efficiency is improved by 2-4 times, the investment is reduced by more than 30%, ecology is not destroyed, and the system is clean, environmentally friendly, low in cost, high in efficiency and good in benefit.

The invention provides a ceramsite floating restraining and resistance reducing agent and a method for reducing the floating degree of ceramsite in pumped ceramsite concrete. A method for detecting the ceramsite floating index for representing the floating degree of the ceramsite is provided, a reverse vibrating treatment measure and a reverse secondary hitting method are adopted, operation is easy and fast, and the result reliability is high. According to the ceramsite floating restraining and resistance reducing agent and the method applying the ceramsite floating restraining and resistance reducing agent to reducing the floating degree of the ceramsite in the pumped ceramsite concrete, pumping resistance can be effectively lowered, the pumping and lubricating effect can be improved, the pumping speed can be increased, pumping pressure can be lowered, and the percent of the slump of the ceramsite concrete doped with the ceramsite floating restraining and resistance reducing agent to the slump of ceramsite concrete without being doped with the ceramsite floating restraining and resistance reducing agent is not lower than 90%.

The invention discloses a switch type air entraining agent applicable to wet spraying concrete. The switch type air entraining agent consists of an ingredient A and an ingredient B, wherein through being metered in parts by mass, the ingredient A is a mixture of 30 to 50 parts of sapindoside powder, 5 to 15 parts of K12 surfactant (sodium dodecyl sulfate) powder and 8 to 12 parts of polyacrylamide powder; the ingredient B is a mixture of 18 to 27 parts of annular polydimethylsiloxane and 5 to 15 parts of hexadecyltrimethylammonium chloride powder; according to a mass ratio being (0.05 to 1):100, the ingredient A and the concrete are added into concrete slurry in the stirring process; according to a mass ratio being (0.015 to 0.03):100, the ingredient B and the concrete are carried and injected into the concrete slurry by compressed air in an air ring position of a spray gun connected with a concrete spraying pipe. The switch type air entraining agent has the advantages that good pumpable performance and sprayed coating performance are realized; the manufacturing cost and the use cost are low; green and environment-friendly effects are achieved; the use is safe; good market promotion values are realized.