CN210679170U - Preparation equipment of crosslinked foaming cement product - Google Patents

Abstract

A preparation device of a cross-linked foaming cement product, which comprises a solid component bin, a material weighing device, a feeding device and a metering water pump, air pump and pipe connection's bubble generating device, first to third stirring storehouse and agitating unit, first to second stirring storehouse import upside installation solid component feed bin, material weighing equipment and feeder apparatus, through adding water and agitating unit stirring, the side installation second stirring storehouse and agitating unit of first stirring storehouse feed bin, first to be equipped with the inlet channel on the second stirring storehouse, the measurement water pump is connected on the inlet channel, first stirring storehouse is used for adding water the stirring to the solid component material, second stirring storehouse adds water and stirs foaming component, foaming component adds water and produces the special foamant of stirring, cooperate into even liquid stream, the exit linkage in first stirring storehouse and second stirring storehouse is to third stirring storehouse, compressed air device's gas circuit pipeline connects the bubble generating device that is equipped with on the third stirring storehouse inside wall.

Description

Preparation equipment of crosslinked foaming cement product

Technical Field

The utility model relates to a building energy conservation and sound barrier material technical field specifically are a preparation equipment of foaming cement material, a crosslinked foaming cement product.

Background

Foam concrete is a new developed material, and has a wide range of advantages and applications, but also has defects: (1) the strength is lower, namely the compressive strength of the foam concrete with the bulk density of 800-859kg/m3 is seriously lower, generally lower than 2.0MPa, and some even lower than 1.0 MPa. (2) The porosity is higher, because of the damage of Na, K, etc. to the bubble in the foam concrete, the air hole is mostly open, which seriously affects the heat preservation performance of the foam concrete. (3) Cracking, water absorption-cracking of the surface of the hardened foam concrete results in the absorption of large amounts of extraneous moisture.

The foaming cement material is typically an inorganic fireproof heat-insulation board prepared by adding additives such as carbon fiber, organic silicon, inorganic foaming agent and the like into ordinary portland cement and high-quality mineral powder by adopting advanced production equipment and a foaming technology through a special process, such as a CS carbon fiber siliceous fireproof heat-insulation board (called a carbon-silicon board for short or a CS board for short). The product is directly used for heat-insulating layers of building external wall heat-insulating systems, roof heat-insulating systems, fireproof isolation belts of external wall heat-insulating systems, treatment of self-heat-insulating cold and hot bridges of buildings and the like. 2. Product characteristics, low thermal conductivity: the heat conductivity coefficient is as low as 0.048, and is equivalent to that of a rock wool board; the heat insulation material has good heat insulation performance and can be suitable for an external heat insulation system of an external wall. Non-combustion: the product has combustion performance reaching A1 level and is used for outer heat insulating system and fireproof isolating belt with fireproof requirement. Aging resistance: the product completely belongs to inorganic materials and has durability, but the cost of the carbon fiber silicon fireproof heat-insulation board is high, the thinning is difficult in quality (the thickness is more than 3 cm), the water absorption can not meet the application requirement, the specific gravity is lighter (more than 210Kg per square of dry weight), the compressive and tensile strength is difficult to reach better level, the product is still greatly limited in application, in addition, the appearance color is too deep, the aperture ratio of the product is still too high at present, and the foamed closed hole is an important guarantee of quality.

The foaming cement has excellent inorganic non-combustibility and is widely applied to the aspects of fire prevention, heat insulation, sound insulation and the like. The method is widely applied to the industries of construction, petrochemical industry, power generation, transportation and the like. The composite material is suitable for being used as external wall external insulation boards, indoor ceiling linings, roofs, insulation boards and partition boards of high-grade buildings such as hotels, apartments, hospitals and the like, has extremely obvious energy-saving effect, and is an ideal insulation material for cold insulation of cold storages, petrochemical engineering, thermal engineering and other pipe networks.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a cross-linking foaming cement product's composition preparation equipment makes the goods have better compressive tensile strength, and its foaming rate is high, can prepare 2 centimetres of panel of bigger size (60 centimetres square), and the closed cell rate of foaming can be controlled, and the proportion is lighter (every side of dry weight 180) 190Kg, and is that the cost of material is obviously less than prior art product.

In order to solve the problem existing in the background art, the utility model adopts the following technical scheme: a preparation device of a cross-linked foaming cement product comprises solid component bins, material weighing equipment, material feeding equipment, a metering water pump, an air pump, a bubble generating device connected with a pipeline, first to third stirring bins and stirring devices, wherein the solid component bins are arranged on the upper sides of inlets of the first to second stirring bins, the material weighing equipment and the material feeding equipment, the materials are stirred by adding water and the stirring devices, the second stirring bin and the stirring devices are arranged beside the first stirring bin, water inlet pipelines are arranged on the first to second stirring bins, the metering water pump is connected on the water inlet pipelines, the first stirring bin is used for adding water to the solid component materials for stirring, the second stirring bin is used for adding water to the foaming component for stirring, the foaming component is added with water to generate a special foaming agent for stirring and is matched into a uniform liquid flow, outlets of the first stirring bin and the second stirring bin are connected to the third stirring bin, a gas path pipeline of a compressed air device is connected with the bubble generating device arranged on the inner side, the outlet of the third stirring bin is connected to a casting die production line.

Further, the feeding device is a vibrator or a screw conveyor.

Furthermore, an outlet of the third stirring bin is connected with a peristaltic metering pump and then connected to a casting die production line.

Furthermore, the micropore head is provided with evenly distributed micropores, and the diameter of the micropores is 0.3-0.5 cm.

The composition of the prepared crosslinked foamed cement product, the weight ratio of the foamed cement is as follows: the solid components are 100 portions of cement, 20 to 35 portions of fly ash and 0.1 to 0.5 portion of fiber; 2-3 parts of carbon black with the particle size of 0.5-2 microns; the concrete foaming component is organic component water reducing agent 0.8-1.2, thickening agent 0.5-1.0, water is 50-300 times of foaming component, the organic component water reducing agent is stirred to prepare foam, the solid component is mixed and then water is added to prepare flowable cement paste, the cement paste is added simultaneously when being mixed with the foam, the cement paste and the foam of the cement paste are stirred uniformly together, and air bubbles (foamed by air micropore heads) are added, injected and cast into a flat plate mould, and conveyed by a conveyor belt to the mould for continuous production. The water reducing agent is polycarboxylic acid water reducing agent, and 3-5 parts of magnesium chloride or magnesium oxide mixture is added.

The thickening agent is polyvinyl alcohol or polyvinyl acetate; microfibers having an effective diameter of 0.1 to 0.2 millimeters.

Adding 0.1-0.2% surfactant, wherein the surfactant is sulfonate, such as sodium alkyl sulfonate and sodium alkyl benzene sulfonate, as air-entraining agent.

Glass fiber or PET fiber changzhou tianyi fiber for concrete production: polypropylene fiber, polyacrylonitrile fiber, polyvinyl alcohol fiber, polypropylene plastic steel fiber, polyester fiber and modified polyester fiber. The cement is double-quick portland cement, which is a cement with high early and later strength.

The water reducing agent is associated with water molecules during foaming, and is associated with hydrogen bonds among the water molecules to form a stable water film on the surface of cement particles, so that the cement particles are prevented from being directly contacted, the sliding capacity among the cement particles is improved, the lubricating effect is realized, and the fluidity of slurry is further improved. The micro air bubbles of the cement paste are wrapped by the directional adsorption polar groups of the water reducing agent, so that the air bubbles are isolated from the air bubbles. After the water reducing agent is added into the concrete, along with the hydration reaction, the water reducing agent molecules are dispersed in a dispersion system and are uniformly adsorbed on the surfaces of cement particles, so that the agglomeration of the cement particles is destroyed, and the cement particles are in a highly dispersed stable state due to the special action of the water reducing agent molecules. The product has higher fluidity when the water content is low, the process of the utility model can reduce the water adding amount of the product and reduce the maintenance time; active white mud 1-3, fly ash 1-5 have the promotion effect at cement hardening hydration and permanent mummification in-process, improve the association performance of concrete, including appropriate amount fibre, the cost-push is not high, nevertheless improves the resistance to compression tensile properties of goods, can make the utility model discloses a mounting still can be applyed to the slim goods and uses, the utility model discloses the time of the maintenance technology that the goods can make shortens 2-3 days.

Beneficial effect, the utility model discloses the foaming introduces the foamer aqueous solution with the air, evenly disperses in introducing the foamer aqueous solution with the air, realizes the contact interface as far as possible of liquid gas, adds the effect of a small amount of organic foamer to make the surfactant in the foamer form the electric double layer and surround the air on the liquid film surface, form one by one bubble. The prior foaming machine can not achieve ideal effect when foaming, has low foaming rate, causes poor product quality, high aperture ratio and can not achieve the use requirement, wastes a large amount of time and increases the cost. The utility model discloses it is effectual to foam, can reach the operation requirement. The bubble is structural, and the bubble radius is moderate and can control, and freeze proof index is high, moreover the utility model discloses the foaming rate is high, and the efficiency of foaming improves, and the time of foaming shortens. The foam concrete has strong shock resistance. Ordinary concrete can be broken by a sledge hammer, but foam concrete with certain density is difficult to break. The foaming cement is a novel light heat-insulating material containing a large number of closed air holes, which is formed by fully foaming a foaming agent in a mechanical mode through a foaming system of a foaming machine, uniformly mixing foam and cement slurry, then carrying out cast-in-place construction or mould forming through a pumping system of the foaming machine and carrying out natural maintenance. It belongs to a bubble-shaped heat-insulating material, and is characterized by that in the interior of concrete a closed foam hole is formed, so that the concrete can be lightened and its heat-insulating effect can be raised.

After the water reducing agent is doped into the concrete, the hydrophobic groups of the water reducing agent are directionally adsorbed on the surfaces of cement particles, and the hydrophilic groups are directed to an aqueous solution, so that a monomolecular or polymolecular adsorption film is formed. Because of the directional adsorption of the surfactant, the surface of the cement colloidal particles has charges with the same sign, under the action of like-pole repulsion, the cement-water system can be in a relatively stable suspension state, and a flocculation-shaped structure formed at the initial stage of water addition of the cement can be dispersed and disintegrated, so that the water in the flocculation structure is released, and the purpose of reducing water is achieved. After the water reducing agent is added, the workability of the fresh concrete can be improved.

The magnesium chloride and magnesium oxide are added to ensure that the product has better compressive and tensile strength, and the silicon-acrylic hydrophobic weather-resistant coating is used, so that the product has the performance index and excellent heat insulation performance, wherein the heat conductivity coefficient is 0.040-0.05W/(mk), and the heat resistance is about 30 times of that of common concrete. The foam concrete has good sound insulation effect, contains a large amount of independent bubbles, is uniformly distributed, has sound absorption capacity of 0.09-0.19 percent which is 5 times that of common concrete, and has effective sound insulation function. The area of a thin 2 cm product can reach 50 cm square, which cannot be reached by the prior art.

The ultra-low density is that the dry volume density is 180-190kg/m3, which is 1/10 of the density of common concrete, and the whole load of the building can be reduced. The articles of the present invention are particularly advantageous because of their low density but superior physical properties. The compressive strength is higher, namely the compressive strength is 0.5-0.8 Mpa. Better waterproofness, independent and dense bubbles and good integrity, so that the waterproof material has certain waterproofness. The anti-cracking performance is low, and the anti-cracking performance is more than 8 times of that of common concrete. The service life is long, which is the same as the service life of the main engineering.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The implementation mode adopts the following technical scheme: a preparation device of a composition of a cross-linked foaming cement product comprises solid component bins 4, 5, 6 and 7, a mixing device of all solid components (including cement and all additives), a material weighing device, a metering water pump, an air pump, a bubble generating device connected with a pipeline, a first stirring bin, a second stirring bin, a third stirring bin and a stirring device, wherein the solid component mixing device and an inlet of the material weighing device are arranged at the upper side of all the stirring bins, the solid components are stirred by the water adding and stirring device, the second stirring bin 2 and the stirring device are arranged at the side of the bin of the first stirring bin 1, is used for adding water into the foaming components to stir, generates a special foaming agent, is matched into a uniform liquid flow, is metered by a metering pump to add water, the generated foaming agent and the solid component are added with water and stirred into slurry to be metered and added into a third stirring bin for stirring, and compressed air generated by an air pump 8 passes through a pipeline and the third stirring bin; and stirring for 1 to 2 minutes in a third stirring bin to obtain a finished product foaming slurry, and quantitatively casting the foaming slurry to a casting mold production line 9 for molding, or casting the foaming slurry into a plate shape through a container and metering equipment. The inlet of the third stirring bin 3 is connected with the output port of the second stirring bin 2 arranged beside the bin of the first stirring bin 1.

The bottom of the third stirring bin is provided with a bubble input port generated by a compressed air device, air flow generates bubbles through a micropore head (arranged in the stirring bin), and the diameter of each micropore is 0.3-2 cm, especially 0.5-1 cm; stirring for 1 to 2 minutes in a third stirring bin to obtain a finished product foaming slurry, and quantitatively casting the finished product foaming slurry into a mold, or casting the finished product foaming slurry into a plate shape through a container and metering equipment;

when the flat plate-shaped mold primary product is cast, the flat plate-shaped mold primary product is rolled by a light pressure roller and conveyed to a maintenance area on a conveyor belt, and the maintenance is needed in a high-humidity environment with the temperature of 25-45 ℃ and the RH of not less than 85 percent; the grass felt covers the surface of the water spraying mode.

Maintaining in a glass or plastic greenhouse; and (3) after the maintenance environment is ensured to be more than 6 days, spraying hydrophobic coating on the surface of the foam flat plate after cutting, and performing hydrophobic sealing pretreatment: namely spraying the silicone-acrylate emulsion solution; the finished product is obtained after more than one day.

The composition of the cross-linked foaming cement product comprises the following materials in percentage by weight: the solid component is cement 100, PP or PET fiber 0.3-0.5; 2-3 parts of carbon black with the particle size of 0.5-2 microns; the concrete foaming component is 0.8-1.2 of polycarboxylic acid water reducing agent, 0.5-1.0 of thickening agent polyvinyl alcohol or polyvinyl acetate, and 3-5 parts of magnesium chloride or mixture of magnesium chloride and magnesium oxide. The foaming equipment comprises a solid component bin, a solid component mixing device, a material weighing device, a metering water pump, an air pump (compressor), a bubble generating device connected with a pipeline, a first stirring bin and a stirring device, wherein the upper side of the stirring bin is provided with an inlet of the solid component mixing device and the material weighing device, the solid component mixing device and the material weighing device are stirred by adding water, the side of the first stirring bin is provided with a second stirring bin and the stirring device, the second stirring bin and the stirring device are used for adding water into 0.8-1.2 parts of a polycarboxylic acid water reducer of a foaming component for stirring to form uniform liquid flow, the metering pump is used for metering the water adding and the like, if a surfactant is 50-500 ppm of the weight of cement, a foaming agent and a solid component are added into a third stirring bin in a manner of controlling and metering the water-added stirring slurry of the foaming agent and the solid component, and the compressed air generated by the air, the diameter of the micropores is 0.3-2 cm, especially 0.5-1 cm; and stirring for 1 to 2 minutes in a third stirring bin to obtain a finished product foaming slurry, and quantitatively casting the finished product foaming slurry into a mold or casting the finished product foaming slurry into a plate shape through a container and metering equipment.

Mixing solid components, adding water to prepare flowable cement paste, adding compressed air in the form of bubbles when the cement paste is mixed with foam, uniformly stirring the compressed air and the foam of the cement paste, injecting the mixture into a flat plate mould to form a primary product, conveying the primary product by a conveyor belt to produce the product, adding 150 parts of organic component water reducing agent which is a foaming component by adding water, stirring the organic component water reducing agent to prepare foam, mixing the solid components, adding water to prepare flowable cement paste, simultaneously mixing the cement paste with the foam, uniformly stirring the mixture and the foam of the cement paste, foaming the mixture from the bottom of air, injecting the mixture into the flat plate mould, conveying the foam by the conveyor belt to produce the product, and taking sulfonate as a surfactant, such as alkyl sodium sulfonate and sodium alkyl benzene sulfonate; the microfibers have an effective diameter of 0.1-0.2 millimeters. The microfibers have an effective diameter of 0.1-0.2 millimeters.

Composition of cross-linked foamed cement products, glass or PET fibres-changzhou tianyi fibres for producing concrete: polypropylene fiber, polyacrylonitrile fiber, polyvinyl alcohol fiber, polypropylene plastic steel fiber, polyester fiber and modified polyester fiber. The cement is double-quick portland cement, which is a cement with high early and later strength.

When the air entraining agent and the cement slurry foam are mixed uniformly, the mixture is injected into a flat plate mould and conveyed by a conveyor belt to the mould for production, and a small amount of sodium alkyl sulfonate and sodium alkyl benzene sulfonate can be added as the components of the air entraining agent.

The preparation method of crosslinked foaming cement product's composition, it is flat through the light compression roller when casting into flat mould, conveys the maintenance district on the conveyer belt, the utility model discloses a maintenance is very important, needs to be maintained under high temperature (not low 25 ℃, generally 25-45 ℃) high humidity (not less than 85% RH) environment, and the straw felt covers the mode of surface shower water, and maintenance is also good mode in glass or vinyl house, and above maintenance environment will guarantee more than 5 days (5-10 days all can), then all spray hydrophobic coating on the dull and stereotyped surface of foam, hydrophobic closed pretreatment: silicone (such as sodium methyl silanol), aqueous PU or melamine solution; the product is obtained after more than one day. After the hydrophobic coating is sprayed, the product can be stacked and hardened, and at the moment, the superposition of more than 10 products is completely feasible. The diameter of the micropores is 0.3-2 cm, especially 0.3-0.8 cm; stirring for 1 to 2 minutes in a third stirring bin to obtain a finished product foaming slurry, and quantitatively casting the finished product foaming slurry into a mold, or casting the finished product foaming slurry into a plate shape through a container and metering equipment; when the flat plate-shaped mold primary product is cast, the flat plate-shaped mold primary product is rolled by a light pressure roller and conveyed to a maintenance area on a conveyor belt, and the maintenance is needed in a high-humidity environment with the temperature of 25-45 ℃ and the RH of not less than 85 percent; spraying water on the surface of the straw mat. Maintaining in glass or plastic shed. Cutting the foam plate in the maintenance environment for more than 6 days, spraying hydrophobic coating on the surface of the foam plate, and performing hydrophobic sealing pretreatment: spraying with a silicone-acrylic emulsion solution; the finished product is obtained after more than one day.

The solid component is cement 100, PP or PET fiber 0.5; 2 parts of carbon black with the particle size of 0.5-2 microns; the concrete foaming component is 0.8 part of polycarboxylic acid water reducing agent, 0.5 part of thickening agent polyvinyl alcohol or polyvinyl acetate, and 3 parts of magnesium chloride or mixture of magnesium chloride and magnesium oxide are added; the surfactant is sodium alkyl benzene sulfonate which is 500ppm of sodium alkyl sulfonate based on the weight of cement, water is added into 200 parts of foaming components, the mixture is stirred to prepare foam, solid components are mixed and then water is added to prepare flowable cement paste, compressed air in the form of bubbles (added by air bubbles) is added into the cement paste when the cement paste is mixed with the foam, the mixture is stirred with the cement paste foam, and then the mixture is injected into a flat plate mold and conveyed to the mold by a conveyor belt to produce the cement.

The solid component comprises 100 parts of cement and 0.1 part of PP or PET fiber; 3 parts of carbon black with the particle size of 0.5-2 microns; the concrete foaming component is 1.2 parts of polycarboxylic acid water reducing agent, 1.0 part of thickening agent polyvinyl alcohol or polyvinyl acetate, 5 parts of magnesium chloride or mixture with magnesium oxide is added, 1 part of sodium benzenesulfonate surfactant and 250 parts of water as foaming component are stirred to prepare foam, after the solid components are mixed, water is added to prepare flowable cement paste, and when the cement paste is mixed with the foam, compressed air in the form of bubbles is simultaneously added, and the mixture and the foam of the cement paste are uniformly stirred together, injected into a flat plate mould and conveyed to the mould by a conveyor belt to produce the concrete.

PET fiber changzhoutianyi fiber for concrete production: polypropylene fiber, polyacrylonitrile fiber, polyvinyl alcohol fiber, polypropylene plastic steel fiber, polyester fiber and modified polyester fiber; the utility model discloses the variety of cement: the cement with high early and later strength is a kind of double-quick portland cement.

The adopted silicone-acrylate emulsion is an emulsion which is formed by adding an organic silicon monomer containing unsaturated bonds and an acrylic acid monomer into a proper auxiliary agent and polymerizing through a core-shell coating polymerization process. Combines the high temperature resistance, weather resistance, chemical resistance, hydrophobicity, low surface energy and difficult pollution of organosilicon and the high color retention, flexibility and adhesiveness of acrylic resin.

The present embodiment is summarized on the basis of the application of the emerald company, and has already entered into actual sale. Those of ordinary skill in the art will understand that: the above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (3)

1. A preparation device of a cross-linked foaming cement product is characterized by comprising a solid component bin, a material weighing device, a material feeding device, a metering water pump, an air pump, a bubble generating device connected with a pipeline, a first stirring bin, a second stirring bin, a third stirring bin and a stirring device, wherein the solid component bin, the material weighing device and the material feeding device are arranged on the upper side of the inlet of the first stirring bin, the solid component bin, the material weighing device and the material feeding device are stirred by adding water and the stirring device, the second stirring bin and the stirring device are arranged on the side of the first stirring bin, a water inlet pipeline is arranged on the first stirring bin and the second stirring bin, the metering water pump is connected onto the water inlet pipeline, the first stirring bin is used for adding water and stirring the solid component material, the second stirring bin is used for adding water into the foaming component for stirring, the foaming component is added with water to generate a foaming agent special for stirring and, the air passage pipeline of the compressed air device is connected with a bubble generating device arranged on the inner side wall of the third stirring bin, and an outlet of the third stirring bin is connected to a casting die production line.

2. The apparatus for producing a cross-linked foamed cement product according to claim 1, wherein the feeding means is a vibrator or a screw conveyor.

3. The apparatus for producing a cross-linked foamed cement product according to claim 1, wherein the outlet of the third mixing silo is connected to a peristaltic metering pump and then connected to the casting die production line.

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