CN111660421B - Cement-based composite river sludge multilayer board forming production line and forming method - Google Patents

Cement-based composite river sludge multilayer board forming production line and forming method Download PDF

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Publication number
CN111660421B
CN111660421B CN202010542254.1A CN202010542254A CN111660421B CN 111660421 B CN111660421 B CN 111660421B CN 202010542254 A CN202010542254 A CN 202010542254A CN 111660421 B CN111660421 B CN 111660421B
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cement
pressing
fabric
stirrer
core material
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CN111660421A (en
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席宗隆
李庆峰
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Jiangsu Daotong New Material Technology Co ltd
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Jiangsu Daotong New Material Technology Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B15/00—General arrangement or layout of plant ; Industrial outlines or plant installations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
    • B28B1/093—Producing shaped prefabricated articles from the material by vibrating or jolting by means directly acting on the material, e.g. by cores wholly or partly immersed in the material or elements acting on the upper surface of the material
    • B28B1/0935—Producing shaped prefabricated articles from the material by vibrating or jolting by means directly acting on the material, e.g. by cores wholly or partly immersed in the material or elements acting on the upper surface of the material using only elements wholly or partly immersed in the material, e.g. cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/14—Producing shaped prefabricated articles from the material by simple casting, the material being neither forcibly fed nor positively compacted
    • B28B1/16—Producing shaped prefabricated articles from the material by simple casting, the material being neither forcibly fed nor positively compacted for producing layered articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
    • B28B23/022—Means for inserting reinforcing members into the mould or for supporting them in the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B5/00—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in, or on conveyors irrespective of the manner of shaping
    • B28B5/02—Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in, or on conveyors irrespective of the manner of shaping on conveyors of the endless-belt or chain type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/0007—Pretreatment of the ingredients, e.g. by heating, sorting, grading, drying, disintegrating; Preventing generation of dust
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C9/00—General arrangement or layout of plant
    • B28C9/02—General arrangement or layout of plant for producing mixtures of clay or cement with other materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements

Abstract

The invention discloses a cement-based composite riverway sludge multilayer board forming production line and a forming method, wherein the production line comprises microwave treatment equipment, a core material stirrer, a first fabric stirrer, a second fabric stirrer, a core material hopper, a first fabric hopper, a second fabric hopper and conveying and laying equipment; the conveying and laying equipment comprises a conveying belt, and a first pressing and cloth paving device, a second pressing and cloth paving device, a third pressing and cloth paving device and a leveling and pulp scraping device are sequentially arranged on the conveying belt; materials in the first and second material stirring machines are respectively conveyed to the feeding ends of the first and second material pressing and cloth spreading equipment through the first and second material stirring hoppers; materials in the core material stirrer are conveyed to the feed end of the second material pressing and cloth spreading equipment through a core material hopper; the discharge hole of the microwave treatment equipment is communicated with the feed inlet of the core material stirrer in a butt joint way. The invention improves the production efficiency and solves the problem of river channel sludge cleaning treatment; the obtained plate is light, sound-proof, heat-proof, high in strength and good in weather resistance.

Description

Cement-based composite river sludge multilayer board forming production line and forming method
Technical Field
The invention relates to a production line and a forming method for forming a cement-based composite riverway sludge multilayer board, and belongs to the field of preparation of boards by riverway sludge.
Background
River channel dredging engineering is very general at present, and the mud condition of handling that the desilting was gone out is not very ideal always, mainly uses to burn as the owner, nevertheless burns and needs corresponding power plant/cement plant, forms the pollution to the environment in the transportation, and the cost of transportation is high and have the pollution risk, if can produce into the product with desilting mud nearby, will greatly improve river channel desilting efficiency, practices thrift the cost.
At present, the assembled building is widely popularized in the aspect of building materials in China, and the partition wall partition plate in the assembled building, particularly the cement plate with the decoration effect, which can be used on the outer wall, has very urgent requirements and has a huge market prospect. At present, the design, production and assembly of heavy steel or light steel structural frames of fabricated buildings are mature, but the bare frames have few facing plates matched with the heavy steel or light steel structural frames, and the plates firstly require strong weather resistance and can be used on outer walls and secondly have certain requirements on heat preservation, sound insulation and light weight.
At present, the production mode of the cement board is mainly compression molding by a press machine, the production of multilayer boards is difficult to realize by the production method, the compression molding method is not flow line production, the production efficiency is lower, and the flow line is difficult to produce the cement board due to different material properties of cement-based materials, namely the production of lightweight multilayer boards compounded by silt and the cement-based materials.
Disclosure of Invention
The invention provides a production line and a forming method for forming a cement-based composite riverway sludge multilayer board, which are suitable for preparing a light multilayer board compounded by sludge and cement-based materials, and the obtained board is light, sound-proof, heat-proof, high in strength and good in weather resistance, can be used as a facing board and the like, is used for assembly type buildings and the like, and has a decorative effect on the surface; the problem of clear silt of river course processing is solved, the continuous production of the compound light multilayer panel of silt and cement-based material has been realized, the efficiency of cement-based material panel production has been improved.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a production line for molding a cement-based composite riverway sludge multilayer board comprises microwave treatment equipment, a core material stirrer, a first fabric stirrer, a second fabric stirrer, a core material hopper, a first fabric hopper, a second fabric hopper and conveying and laying equipment;
the conveying and laying equipment comprises a conveying belt, and a first pressing and cloth paving equipment, a second pressing and cloth paving equipment, a third pressing and cloth paving equipment and a leveling and pulp scraping equipment are sequentially arranged on the conveying belt along the conveying direction; the first pressing and cloth paving device, the second pressing and cloth paving device and the third pressing and cloth paving device are respectively provided with a feeding end at the upstream and a discharging end at the downstream along the two sides of the conveying direction;
the first surface material stirrer, the core material stirrer and the second surface material stirrer are positioned right above the conveyer belt and are sequentially arranged along the conveying direction; a discharge port of the first fabric stirrer is communicated with a feed port of a first fabric hopper in a butt joint mode, and a discharge port of the first fabric hopper is over against a feed end of the first material pressing and cloth paving equipment; a discharge hole of the core material stirrer is communicated with a feed hole of the core material hopper in a butt joint mode, and the discharge hole of the core material hopper is over against a feed end of the second material pressing and cloth spreading equipment; a discharge port of the second fabric mixer is communicated with a feed port of the second fabric hopper in a butt joint mode, and a discharge port of the second fabric hopper is over against a feed end of the third material pressing and cloth spreading equipment;
the discharge hole of the microwave treatment equipment is communicated with the feed inlet of the core material stirrer in a butt joint way.
The conveying direction in this application refers to the direction of flow of the material during production, i.e. from upstream to downstream. The production line can be provided with various motors and the like according to requirements.
A method for forming a cement-based composite riverway sludge multilayer board utilizes the production line for forming the cement-based composite riverway sludge multilayer board to form, and comprises the following steps:
1) adding the materials into a first fabric stirring machine and a second fabric stirring machine according to the mass ratio of (3-4): 1, stirring the cement and water to obtain a cement mixture;
2) the mass ratio is (250-300): (100-150): (5-7.5): (50-100) adding the river sludge, the cement, the auxiliary materials and the water into microwave treatment equipment, performing microwave irradiation treatment, and then flowing into a core material stirrer for stirring treatment to obtain a sludge mixture; wherein, the auxiliary materials include: 1-2 parts of industrial-grade lithium carbonate, 35-45 parts of sodium silicate solution, 10-15 parts of lignocellulose and 50 parts of silicon powder;
3) the first material pressing and cloth paving device unreels the first non-woven fabric, meanwhile, the cement mixture stirred by the first fabric stirrer is conveyed to the feeding end of the first material pressing and cloth paving device through the first fabric hopper and then conveyed to the position below the unreeled first non-woven fabric, and after being extruded by the first material pressing and cloth paving device, part of the cement mixture permeates to the position above the first non-woven fabric to obtain a first fabric layer;
4) the first fabric layer is conveyed to the feeding end of the second material pressing and cloth paving device, the second material pressing and cloth paving device unreels the gridding cloth, meanwhile, the sludge mixture stirred by the core material stirrer is conveyed to the first fabric layer at the feeding end of the second material pressing and cloth paving device through the core material hopper, the first fabric layer and the sludge mixture are continuously conveyed to the position below the unreeled gridding cloth, after being extruded by the second material pressing and cloth paving device, part of the sludge mixture permeates to the position above the gridding cloth, and the core material layer is compounded on the first fabric layer to obtain an intermediate material layer;
5) the intermediate material layer is carried to the feed end of the third material pressing and spreading equipment, the third material pressing and spreading equipment unreels the second non-woven fabric, simultaneously, the cement mixture stirred by the second fabric stirrer is fed onto the core material layer at the feed end of the third material pressing and spreading equipment through the second fabric hopper, the intermediate material layer and the cement mixture are continuously conveyed to the lower part of the unreeled second non-woven fabric, after the second material pressing and spreading equipment extrudes, part of the cement mixture permeates to the upper part of the second non-woven fabric, the second fabric layer is compounded on the core material layer, and then the cement-based composite riverway sludge multilayer board is obtained by maintaining and cutting after being processed by the leveling and scraping slurry equipment.
The cement in the steps 1) and 2) is preferably ordinary portland cement of small-field 525 or albo 525 white cement. When the cement is used for a fabric layer, the cement of the small open field also has a clear water cement decorative effect, the primary color of the Albo white cement is white, and various decorative colors such as beige, yellow white, blue white, and the like can be modulated according to the requirements of customers.
The applicant finds that in the auxiliary material in the step 2), lithium carbonate can release heat under the microwave field energy, and simultaneously has an initial setting effect in cement, and the effect can be amplified under the microwave condition; the sodium silicate solution can expand and harden under the microwave condition, a foaming structure is formed by combining the water evaporation in the material, and the hardening increases the strength of the foaming structure to keep the material in a foaming state; the lignocellulose can improve the fluidity and uniformity of materials and has a reinforcing effect on the structure; the silica powder can optimize the hydration reaction of cement and improve the overall strength of the material as aggregate.
Usually, the water content of river silt is between 75 ~ 95%, and the material ratio in step 1) for this ratio under the water content, when the water content of river silt exceedes this scope, can increase and decrease the water yield according to actual water content.
In the step 2), under microwave irradiation, the auxiliary materials absorb waves and release heat, so that the mixture is promoted to be initially solidified, strengthened and evaporated with water to form a microporous structure.
In the steps 3) -5), after the materials are extruded, part of the materials seep from one side of the non-woven fabric or the gridding cloth to the other side (slurry pulling), so that the slurry on the surface of the plate is finer and smoother, and the appearance is improved.
In order to ensure the uniformity of materials and reduce energy consumption, in the step 1), the stirring speeds of the first fabric stirrer and the second fabric stirrer are both 150-600 revolutions per minute, and the single stirring time of the first fabric stirrer and the single stirring time of the second fabric stirrer are both 3-5 minutes. The single indicates the reinforced churning time of once, and the production line is continuous production, and after the material ejection of compact in the agitator was finished, need continue reinforced.
The viscosity of the material treated by the microwave treatment equipment is increased and the material is viscous, so that the stirring speed is not too high, preferably, in the step 2), the stirring speed of the core material stirrer is 40-50 revolutions per minute, and the single stirring time of the core material stirrer is 5-8 minutes;
in order to ensure the strength of the obtained plate, in the step 5), the curing condition is that the plate is cured for 10 to 12 hours under the conditions that the temperature is 40 to 45 ℃ and the humidity is 60 to 80 percent.
In order to save space and facilitate installation and production, the production line for molding the cement-based composite riverway sludge multilayer board further comprises three layers of mounting frames, wherein the three layers of mounting frames comprise a first mounting table, a second mounting table and a third mounting table which are sequentially arranged from top to bottom; the microwave processing equipment is arranged on the first mounting table; the core material stirrer, the first fabric stirrer and the second fabric stirrer are all arranged on the second mounting platform; the feeding port ends of the core material hopper, the first surface material hopper and the second surface material hopper are all arranged on the second mounting platform; the conveying and laying equipment is installed on the third installation platform.
In order to improve the uniformity of the materials, the feeding ends of the first pressing and cloth paving device, the second pressing and cloth paving device and the third pressing and cloth paving device are respectively provided with two vibration rods. The material can be evenly flowed.
In order to realize the functions of unreeling and pressing, as an implementation scheme, the first pressing and cloth paving device, the second pressing and cloth paving device and the third pressing and cloth paving device respectively comprise unreeling rollers, guide rollers and opposite pressing rollers, the unreeling rollers are arranged above the guide rollers, and the guide rollers are arranged at the upper streams of the opposite pressing rollers. The unwinding roller is used for unwinding the non-woven fabric or the grid cloth, the guide roller is used for guiding the non-woven fabric or the grid cloth, and the pressing roller is used for pressing the non-woven fabric or the grid cloth and the mixed material. Due to the continuous production, the unreeling of each cloth can be dragged by the continuous production.
In order to improve the uniformity of the core material layer, a material homogenizing device is arranged at the upstream of the second material pressing and cloth paving equipment, and the feeding end of the second material pressing and cloth paving equipment is arranged at the upstream of the material homogenizing device. Due to the thicker core layer, a refining device is arranged at the upstream of the second material pressing and cloth spreading device. The refining apparatus may be a screw refining apparatus.
As a preferred implementation, the microwave treatment device comprises a horizontal housing; a feed inlet is formed in the top of one upward end of the horizontal shell in the length direction, and a discharge outlet is formed in the bottom of the other upward end of the horizontal shell in the length direction; 2 layers of wave-transparent packing augers are arranged in the horizontal shell; the horizontal shell is provided with a microwave emission source with the microwave emission direction pointing to the inner side of the horizontal shell; the discharge hole of the horizontal shell is communicated with the feed inlet of the core material stirrer in a butt joint way. The river silt, the cement, the auxiliary materials and the water enter from a feeding hole of the horizontal shell, flow to a discharging hole of the horizontal shell under the stirring and conveying of the wave-transparent packing auger under the condition of microwave irradiation, and flow into the core material stirring machine from the discharging hole of the horizontal shell, the microwave power is 30kw, and the retention time of the materials in the horizontal shell is 8-10 min. The wave-transmitting packing auger is made of wave-transmitting materials.
In order to improve the mixing effect, preferably, the core material stirrer is a double-shaft double-helical ribbon stirrer; first surface material mixer and second surface material mixer are single spiral shell area rapid mixing machine.
In order to facilitate the disassembly and assembly, the cement-based composite riverway sludge multilayer board forming production line adopts steel structure anchor bolts for installation. The plate can be assembled on site for producing the plate with convenient disassembly and assembly.
The prior art is referred to in the art for techniques not mentioned in the present invention.
The production line for molding the cement-based composite riverway sludge multilayer board adopts a production line mode, and the fabric layer and the core layer are respectively stirred and paved and molded on one production line, so that the large-scale production of the production line is realized, and the production efficiency is improved; the obtained plate is light, sound-proof, heat-proof, high in strength and good in weather resistance, can be used for assembly type buildings, has a decorative effect on the surface, and solves the problem of river channel sludge removal treatment; for the problems that the initial setting time is slow when the sludge and the cement-based material are mixed, and the strength of a sludge core layer is insufficient and cannot support a surface high-strength cement layer, the invention uses auxiliary materials to absorb waves and release heat, promotes the initial setting and water evaporation of the mixture, increases the strength, and forms a microporous structure, so that the strength of the stirring core material meets the requirement of multilayer board production when the stirring core material is paved, improves the heat insulation and sound insulation performance of the board, reduces the density of the board, lightens the quality of the board, and improves the convenience of installation; the cement material is different from magnesium oxide, the fluidity and the uniformity of the cement material after stirring are not easy to control as compared with those of a magnesium oxide stirring material, the uniformity of the material is improved before material pressing through the arrangement of the micro-amplitude vibration rod, the uniformity of the material can be promoted through high-frequency micro-amplitude vibration of the piled material, and the fluidity of the material is improved on the premise of not adding water.
Drawings
FIG. 1 is a schematic structural diagram of a production line for molding a cement-based composite riverway sludge multilayer board;
FIG. 2 is a perspective view of a cement-based composite riverway sludge multilayer board manufactured in the example;
FIG. 3 is a schematic cross-sectional view (enlarged) of FIG. 3;
in the figure, 1 is a microwave processing device, 11 is a horizontal shell, 12 is a wave-transparent auger, 2 is a core material stirrer, 21 is a core material hopper, 3 is a first fabric stirrer, 31 is a first fabric hopper, 4 is a second fabric stirrer, 41 is a second fabric hopper, 5 is a conveying laying device, 51 is a conveying belt, 52 is a first pressing and laying device, 53 is a second pressing and laying device, 531 is a material evening device, 54 is a third pressing and laying device, 55 is a leveling and pulp scraping device, 56 is a vibration rod, 6 is a three-layer mounting rack, 61 is a first mounting platform, 62 is a second mounting platform, 63 is a third mounting platform, 7 is cement-based composite river channel multilayer board, 71 is a first fabric layer, 72 is a core material layer, 73 is a second fabric layer, 74 is a non-woven fabric layer, and 75 is a gridding fabric layer.
Detailed Description
In order to better understand the present invention, the following examples are further provided to illustrate the present invention, but the present invention is not limited to the following examples.
The references to "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. in this application are to be construed as being based on the orientation or positional relationship shown in the drawings and are for convenience only and to simplify the description, but are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation and is not to be construed as limiting the invention.
Example 1
The production line for molding the cement-based composite riverway sludge multilayer board shown in fig. 1 comprises a three-layer mounting rack, microwave treatment equipment, a core material stirrer, a first fabric stirrer, a second fabric stirrer, a core material hopper, a first fabric hopper, a second fabric hopper and conveying and laying equipment;
the layer mounting frame comprises a first mounting table, a second mounting table and a third mounting table which are arranged from top to bottom in sequence; the microwave processing equipment is arranged on the first mounting table; the core material stirrer, the first fabric stirrer and the second fabric stirrer are all arranged on the second mounting platform; the feeding port ends of the core material hopper, the first surface material hopper and the second surface material hopper are all arranged on the second mounting platform; the conveying and laying equipment is arranged on the third mounting table, and each part is mounted by adopting a steel structure anchor bolt, so that the mounting and dismounting are convenient, and the plate can be assembled on site for producing the plate;
the conveying and laying equipment comprises a conveying belt, the conveying length is 20 meters, the conveying width is 4 meters, and a first pressing and cloth paving equipment, a second pressing and cloth paving equipment, a third pressing and cloth paving equipment and a leveling and pulp scraping equipment are sequentially arranged on the conveying belt along the conveying direction; the first pressing and cloth paving device, the second pressing and cloth paving device and the third pressing and cloth paving device are respectively provided with a feeding end at the upstream and a discharging end at the downstream along the two sides of the conveying direction; the first pressing and cloth laying equipment, the second pressing and cloth laying equipment and the third pressing and cloth laying equipment respectively comprise unwinding rollers, guide rollers and opposite compression rollers, the unwinding rollers are arranged above the guide rollers, and the guide rollers are arranged at the upstream of the opposite compression rollers;
the first surface material stirrer, the core material stirrer and the second surface material stirrer are all positioned right above the conveyer belt and are sequentially arranged along the conveying direction, and the core material stirrer is 1.8m3The double-shaft double-ribbon stirrer comprises a first surface material stirrer and a second surface material stirrer which are both 1m3A single helical ribbon rapid mixer; a discharge port of the first fabric stirrer is communicated with a feed port of a first fabric hopper in a butt joint mode, and a discharge port of the first fabric hopper is over against a feed end of the first material pressing and cloth paving equipment; a discharge hole of the core material stirrer is communicated with a feed hole of the core material hopper in a butt joint mode, and the discharge hole of the core material hopper is over against a feed end of the second material pressing and cloth spreading equipment; a discharge port of the second fabric mixer is communicated with a feed port of the second fabric hopper in a butt joint mode, and a discharge port of the second fabric hopper is over against a feed end of the third material pressing and cloth spreading equipment;
the microwave treatment equipment comprises a horizontal shell; a feed inlet is formed in the top of one upward end of the horizontal shell in the length direction, and a discharge outlet is formed in the bottom of the other upward end of the horizontal shell in the length direction; 2 layers of wave-transparent packing augers are arranged in the horizontal shell, the conveying direction of the wave-transparent packing augers is consistent with the direction from the feeding port to the discharging port on the horizontal shell, so that materials can be conveyed from the feeding port to the discharging port under the conveying of the wave-transparent packing augers, the wave-transparent packing augers are made of wave-transparent materials, the utilization rate of microwaves can be improved, and the length of the wave-transparent packing augers is 9 meters; the horizontal shell is provided with a microwave emission source with the microwave emission direction pointing to the inner side of the horizontal shell; the discharge hole of the horizontal shell is communicated with the feed inlet of the core material stirrer in a butt joint way.
Example 2
On the basis of the embodiment 1, the following improvements are further made: the feeding ends of the first pressing and cloth paving device, the second pressing and cloth paving device and the third pressing and cloth paving device are respectively provided with two vibration rods, each vibration rod is 20mm in diameter, 20mm in vibration amplitude and 150 times/minute in vibration frequency, and the materials are helped to flow uniformly.
Example 3
On the basis of the embodiment 2, the following improvements are further made: the upper stream of the second material pressing and cloth spreading equipment is provided with a material homogenizing device, and the feed end of the second material pressing and cloth spreading equipment is arranged at the upper stream of the material homogenizing device. Because the thickness of the core material layer is thicker, a screw material homogenizing device is arranged at the upstream of the second material pressing and cloth paving device.
The production line is utilized to prepare the cement-based composite riverway sludge multilayer board, and the production line comprises the following steps:
1) adding a mixture of 3.33 mass percent: 1, stirring the cement (Alibo 525 white cement) and water, wherein the stirring speeds of the first surface material stirrer and the second surface material stirrer are both 350 revolutions per minute, and the single-time stirring time (the stirring time of one-time feeding) of the first surface material stirrer and the second surface material stirrer is both 4 minutes, so as to obtain a cement mixture;
2) and (3) mixing the components in a mass ratio of 280: 130: 6: 75, adding river sludge (with the water content of 80-83 percent), cement (525 ordinary portland cement in small wild field), auxiliary materials and water from a feeding hole of the horizontal shell, conveying the mixture to a discharging hole of the horizontal shell under the stirring and conveying of the wave-transparent auger under the condition of microwave irradiation, and flowing the mixture into the core material stirrer from the discharging hole of the horizontal shell, wherein the microwave power is 30kw, and the retention time of the materials in the horizontal shell is 9 min; then the sludge flows into a core material stirrer for stirring treatment, the stirring speed of the core material stirrer is 45 revolutions per minute, and the single-time stirring time (the stirring time of one-time feeding) of the core material stirrer is 6 minutes, so that a sludge mixture is obtained; wherein, the auxiliary materials include: 1.5 parts of industrial-grade lithium carbonate (Nanjing Sitaibao trade company, Ltd.), 40 parts of sodium silicate solution (40%, modulus 3.3, Suzhou Longhua chemical engineering and technology company, Ltd.), 12 parts of lignocellulose (Germany GRS) and 50 parts of silicon powder (the content of silicon dioxide is more than 97%, the mesh number is 1800 meshes, and the company of Hongkong quartz, Ltd.) are adopted;
3) the first material pressing and cloth paving device unreels a first nonwoven fabric (specification: 20g, no glue, alkali resistance, Shandong Hengruitong New Material engineering Limited), flowing downstream along a conveyer belt under the action of a traction and guide roller for continuous production, meanwhile, feeding a cement mixture stirred by a first fabric stirrer to the feeding end of a first material pressing and spreading device through a first fabric hopper, then conveying the cement mixture to the lower part of the unreeled first nonwoven fabric, extruding the cement mixture and the first nonwoven fabric together through a counter-pressure roller of the first material pressing and spreading device, and penetrating part of the cement mixture to the upper part of the first nonwoven fabric to obtain a first fabric layer;
4) the first fabric layer is continuously conveyed to the feeding end of the second material pressing and cloth paving device, and the second material pressing and cloth paving device simultaneously unreels two layers of grid cloth (specification: 8-10 meshes, alkali resistance, and Ringchu City Yinhua glass fiber cloth factory), under the action of a traction and guide roller for continuous production, the sludge mixture flows downstream along a conveying belt, meanwhile, the sludge mixture stirred by a core material stirring machine is conveyed to a first fabric layer at the feeding end of a second pressing and cloth paving device through a core material hopper, the first fabric layer and the sludge mixture are continuously conveyed to the lower part of the unreeled grid cloth, after being extruded by a counter-pressure roller of the second pressing and cloth paving device, part of the sludge mixture permeates to the upper part of the grid cloth, and a core material layer is compounded on the first fabric layer to obtain an intermediate material layer;
5) the middle material layer is continuously conveyed to the feed end of the third pressing and cloth spreading device, and the third pressing and cloth spreading device unreels the second non-woven fabric (specification: 20g, no glue, alkali resistance, preferably Shandong Hengruitong New Material engineering Co., Ltd.), the mixture flows downstream along a conveyer belt under the action of a traction and guide roller in continuous production, meanwhile, the cement mixture stirred by a second fabric stirrer is fed onto a core material layer at the feeding end of a third pressing and spreading device through a second fabric hopper, an intermediate material layer and the cement mixture are continuously conveyed to the lower part of the unreeled second non-woven fabric, part of the cement mixture permeates to the upper part of the second non-woven fabric after being extruded by a counter-pressure roller of the second pressing and spreading device, the second fabric layer is compounded on the core material layer, and then the core material layer is treated by a leveling and slurry scraping device, maintained for 12 hours under the conditions of temperature of 40-45 ℃ and humidity of 70% and cut to obtain the cement-based composite riverway sludge multilayer board, the surface of which is smooth and fine, and the performance of which is shown in Table 1.
Table 1 shows the performance of the cement-based composite riverway sludge multi-layer board
Item Test results
Average density of plate 800-900kg/m3
Combustion performance Grade A1
Rate of deformation < 1% (immersion test)
Coefficient of thermal conductivity 0.1W/cm.k
Flexural strength 15-16N/mm square
Compressive strength 14-15MPa
Sound insulation property 80-86dB
Weather resistance Can be used outdoors
As shown in fig. 2-3, the cement-based composite riverway sludge multilayer board sequentially comprises a second surface material layer, a core material layer and a first surface material layer from top to bottom, wherein the non-woven fabric layers are compounded between the second surface material layer and the first surface material layer, and two layers of grid fabric layers are compounded in the core material layer.
The production line is adopted, the fabric layer and the core layer are respectively stirred, and the fabric layer and the core layer are paved and formed on one production line, so that the large-scale production of the production line is realized.

Claims (9)

1. A method for preparing a cement-based composite river sludge multilayer board by using a cement-based composite river sludge multilayer board forming production line is characterized by comprising the following steps of: the production line for molding the cement-based composite riverway sludge multilayer board comprises microwave treatment equipment, a core material stirrer, a first surface material stirrer, a second surface material stirrer, a core material hopper, a first surface material hopper, a second surface material hopper and conveying and laying equipment;
the conveying and laying equipment comprises a conveying belt, and a first pressing and cloth paving equipment, a second pressing and cloth paving equipment, a third pressing and cloth paving equipment and a leveling and pulp scraping equipment are sequentially arranged on the conveying belt along the conveying direction; the first pressing and cloth paving device, the second pressing and cloth paving device and the third pressing and cloth paving device are respectively provided with a feeding end at the upstream and a discharging end at the downstream along the two sides of the conveying direction;
the first surface material stirrer, the core material stirrer and the second surface material stirrer are positioned right above the conveyer belt and are sequentially arranged along the conveying direction; a discharge port of the first fabric stirrer is communicated with a feed port of a first fabric hopper in a butt joint mode, and a discharge port of the first fabric hopper is over against a feed end of the first material pressing and cloth paving equipment; a discharge hole of the core material stirrer is communicated with a feed hole of the core material hopper in a butt joint mode, and the discharge hole of the core material hopper is over against a feed end of the second material pressing and cloth spreading equipment; a discharge port of the second fabric mixer is communicated with a feed port of the second fabric hopper in a butt joint mode, and a discharge port of the second fabric hopper is over against a feed end of the third material pressing and cloth spreading equipment;
the discharge hole of the microwave treatment equipment is in butt joint communication with the feed inlet of the core material stirrer;
the method for preparing the cement-based composite riverway sludge multilayer board by using the production line for molding the cement-based composite riverway sludge multilayer board comprises the following steps:
1) adding the materials into a first fabric stirring machine and a second fabric stirring machine according to the mass ratio of (3-4): 1, stirring the cement and water to obtain a cement mixture;
2) the mass ratio is (250-300): (100-150): (5-7.5): (50-100) adding the river sludge, the cement, the auxiliary materials and the water into microwave treatment equipment, performing microwave irradiation treatment, and then flowing into a core material stirrer for stirring treatment to obtain a sludge mixture; wherein, the auxiliary materials include: 1-2 parts of industrial-grade lithium carbonate, 35-45 parts of sodium silicate solution, 10-15 parts of lignocellulose and 50 parts of silicon powder;
3) the first material pressing and cloth paving device unreels the first non-woven fabric, meanwhile, the cement mixture stirred by the first fabric stirrer is conveyed to the feeding end of the first material pressing and cloth paving device through the first fabric hopper and then conveyed to the position below the unreeled first non-woven fabric, and after being extruded by the first material pressing and cloth paving device, part of the cement mixture permeates to the position above the first non-woven fabric to obtain a first fabric layer;
4) the first fabric layer is conveyed to the feeding end of the second material pressing and cloth paving device, the second material pressing and cloth paving device unreels the gridding cloth, meanwhile, the sludge mixture stirred by the core material stirrer is conveyed to the first fabric layer at the feeding end of the second material pressing and cloth paving device through the core material hopper, the first fabric layer and the sludge mixture are continuously conveyed to the position below the unreeled gridding cloth, after being extruded by the second material pressing and cloth paving device, part of the sludge mixture permeates to the position above the gridding cloth, and the core material layer is compounded on the first fabric layer to obtain an intermediate material layer;
5) the middle material layer is carried to the feed end of the third material pressing and cloth paving device, the third material pressing and cloth paving device unreels the second non-woven fabric, simultaneously, the cement mixture stirred by the second fabric stirrer is fed onto the core material layer at the feed end of the third material pressing and cloth paving device through the second fabric hopper, the middle material layer and the cement mixture are continuously conveyed to the lower part of the unreeled second non-woven fabric, after the second material pressing and cloth paving device extrudes, part of the cement mixture permeates to the upper part of the second non-woven fabric, the second fabric layer is compounded on the core material layer, and after being treated by the leveling and scraping slurry device, the composite multilayer board is maintained and cut to obtain the river channel sludge and cement base material composite multilayer board.
2. The method for preparing the cement-based composite riverway sludge multilayer board by using the cement-based composite riverway sludge multilayer board forming production line as claimed in claim 1, wherein the method comprises the following steps: the three-layer mounting frame comprises a first mounting table, a second mounting table and a third mounting table which are sequentially arranged from top to bottom; the microwave processing equipment is arranged on the first mounting table; the core material stirrer, the first fabric stirrer and the second fabric stirrer are all arranged on the second mounting platform; the feeding port ends of the core material hopper, the first surface material hopper and the second surface material hopper are all arranged on the second mounting platform; the conveying and laying equipment is installed on the third installation platform.
3. The method for preparing the cement-based composite riverway sludge multilayer board by using the cement-based composite riverway sludge multilayer board forming production line as claimed in claim 1 or 2, wherein the method comprises the following steps: the feeding ends of the first pressing and cloth paving device, the second pressing and cloth paving device and the third pressing and cloth paving device are respectively provided with two vibration rods.
4. The method for preparing the cement-based composite riverway sludge multilayer board by using the cement-based composite riverway sludge multilayer board forming production line as claimed in claim 1 or 2, wherein the method comprises the following steps: the first pressing and cloth paving device, the second pressing and cloth paving device and the third pressing and cloth paving device respectively comprise unwinding rollers, guide rollers and opposite pressing rollers, the unwinding rollers are arranged above the guide rollers, and the guide rollers are arranged on the upper streams of the opposite pressing rollers.
5. The method for preparing the cement-based composite riverway sludge multilayer board by using the cement-based composite riverway sludge multilayer board forming production line as claimed in claim 1 or 2, wherein the method comprises the following steps: the upper stream of the second material pressing and cloth spreading equipment is provided with a material homogenizing device, and the feed end of the second material pressing and cloth spreading equipment is arranged at the upper stream of the material homogenizing device.
6. The method for preparing the cement-based composite riverway sludge multilayer board by using the cement-based composite riverway sludge multilayer board forming production line as claimed in claim 1 or 2, wherein the method comprises the following steps: the microwave treatment equipment comprises a horizontal shell; a feed inlet is formed in the top of one upward end of the horizontal shell in the length direction, and a discharge outlet is formed in the bottom of the other upward end of the horizontal shell in the length direction; 2 layers of wave-transparent packing augers are arranged in the horizontal shell; the horizontal shell is provided with a microwave emission source with the microwave emission direction pointing to the inner side of the horizontal shell; the discharge hole of the horizontal shell is communicated with the feed inlet of the core material stirrer in a butt joint way.
7. The method for preparing the cement-based composite riverway sludge multilayer board by using the cement-based composite riverway sludge multilayer board forming production line as claimed in claim 1 or 2, wherein the method comprises the following steps: the core material stirrer is a double-shaft double-helical ribbon stirrer; first surface material mixer and second surface material mixer are single spiral shell area rapid mixing machine.
8. The method for preparing the cement-based composite riverway sludge multilayer board by using the cement-based composite riverway sludge multilayer board forming production line as claimed in claim 1 or 2, wherein the method comprises the following steps: and (5) mounting by adopting a steel structure anchor bolt.
9. The method for preparing the cement-based composite riverway sludge multilayer board by using the cement-based composite riverway sludge multilayer board forming production line as claimed in claim 1 or 2, wherein the method comprises the following steps: in the step 1), the stirring speed of the first fabric stirrer and the stirring speed of the second fabric stirrer are both 150-600 revolutions per minute, and the single stirring time of the first fabric stirrer and the single stirring time of the second fabric stirrer are both 3-5 minutes; in the step 2), the stirring speed of the core material stirrer is 40-50 revolutions per minute, and the single stirring time of the core material stirrer is 5-8 minutes; river silt, cement, auxiliary materials and water enter from a feeding hole of a horizontal shell, flow to a discharging hole of the horizontal shell under the stirring and conveying of a wave-transparent auger under the condition of microwave irradiation, and flow into a core material stirring machine from the discharging hole of the horizontal shell, wherein the microwave power is 30kw, and the retention time of materials in the horizontal shell is 8-10 min; in the step 5), the curing condition is that the curing is carried out for 10 to 12 hours under the conditions that the temperature is 40 to 45 ℃ and the humidity is 60 to 80 percent.
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CN101265070A (en) * 2008-04-17 2008-09-17 高康 Sludge solidifying agent and application thereof
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CN110776301A (en) * 2019-11-28 2020-02-11 席宗隆 Microwave modified inorganic cementing material, preparation method and application thereof

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Publication number Priority date Publication date Assignee Title
CN2598732Y (en) * 2003-02-28 2004-01-14 熊振国 Multifunctional light composite insulated wallboard forming machine
CN101265070A (en) * 2008-04-17 2008-09-17 高康 Sludge solidifying agent and application thereof
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