CN113956004A

CN113956004A - Nano cement and intelligent production equipment for nano cement

Info

Publication number: CN113956004A
Application number: CN202111441861.XA
Authority: CN
Inventors: 王志永
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-01-21
Also published as: CN115477525A; CN115477525B

Abstract

The invention discloses nanometer cement and intelligent production equipment of the nanometer cement, wherein the nanometer cement comprises 40-48 parts of fly ash portland cement, 52-60 parts of sulphoaluminate cement, 18-20 parts of carbon nano tubes, 2-4 parts of calcium chloride antifreeze agent, 1-3 parts of polymerization modifier, 0.1-0.6 part of silicon dioxide nanometer material, 0.05-0.1 part of lithium carbonate early strength agent and 0.5-1.0 part of water reducing agent, and therefore, the nanometer cement can be better applied to special environments and is applicable to special environments in which cement materials are not well selected. Simultaneously, nanometer cement's intelligent production facility includes that bed plate, first defeated material mechanism, magnetic force vibrate rabbling mechanism, the defeated material mechanism of second, compounding mechanism and control mechanism, simple structure, production is convenient.

Description

Nano cement and intelligent production equipment for nano cement

Technical Field

The invention relates to the technical field of cement, in particular to nano cement and intelligent production equipment of the nano cement.

Background

The cement is a powdery hydraulic inorganic cementing material, is added with water and stirred into slurry, can be hardened in air or in water, can firmly bond sand, stone and other materials together, and can be added with more and more materials to achieve different effects to meet the building requirements under different environments when the development requirement is met.

In the prior art, the nanometer cement is a special material which is used in special environments, most of the existing nanometer cement is prepared by mixing a single cement raw material or two kinds of special cement and two kinds of general cement, most of the combined cement characteristics belong to the special cement or the general cement, and the condition of exceeding the specification or being lower than the specification can be generated in some special environments, so that the improvement exists.

In addition, most of the existing nano cement production equipment is split, different machines are used for different preparation steps, the production equipment is in a production line type mode, the problems of large occupied area and low space utilization efficiency exist, although the intelligent production effect is achieved by the equipment, more defects still exist, for example, the structure of a mixing machine adopted for mixing various cement raw materials is simpler, and the improvement exists.

Therefore, it is necessary to provide a technical means to solve the above-mentioned drawbacks.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide nano cement and intelligent nano cement production equipment, so as to solve the problems that the nano cement in the prior art exceeds the specification or is lower than the specification when applied in some special environments and the problems of large occupied area and low space utilization efficiency of the nano cement production equipment in the prior art.

The invention is realized in such a way that the nano cement comprises: 40-48 parts of fly ash portland cement, 52-60 parts of sulphoaluminate cement, 18-20 parts of carbon nano tube, 2-4 parts of calcium chloride antifreeze agent, 1-3 parts of polymerization modifier, 0.1-0.6 part of silicon dioxide nano material, 0.05-0.1 part of lithium carbonate early strength agent and 0.5-1.0 part of water reducing agent.

The invention also provides an intelligent production device of the nanometer cement, which comprises:

the base plate is used for installing and arranging components;

the first material conveying mechanism is arranged on the base plate and used for conveying sulphoaluminate cement and fly ash silicate cement to a specified position;

the magnetic force vibration stirring mechanism is arranged on the base plate, is connected with the first material conveying mechanism, and is used for receiving the sulphoaluminate cement and the fly ash silicate cement conveyed by the first material conveying mechanism, performing vibration stirring on the sulphoaluminate cement and the fly ash silicate cement, and conveying a mixture formed by stirring to a specified position;

the second material conveying mechanism is arranged on the base plate and used for conveying the nanotube, the calcium chloride antifreezing agent, the polymerization modifier, the silicon dioxide nano material, the lithium carbonate early strength agent and the water reducing agent to a specified position;

the material mixing mechanism is arranged on the base plate, is respectively connected with the second material conveying mechanism and the magnetic force oscillation stirring mechanism, and is used for receiving the mixture conveyed by the magnetic force oscillation stirring mechanism and the material conveyed by the second material conveying mechanism, and stirring and mixing the mixture conveyed by the magnetic force oscillation stirring mechanism and the material conveyed by the second material conveying mechanism to form the required nano cement;

and the control mechanism is respectively electrically connected with the first material conveying mechanism, the magnetic force oscillation stirring mechanism, the second material conveying mechanism and the material mixing mechanism and is used for controlling the first material conveying mechanism, the magnetic force oscillation stirring mechanism, the second material conveying mechanism and the material mixing mechanism to work.

Compared with the prior art, the invention has the beneficial effects that:

1. the fly ash silicate cement in the general cement and the sulphoaluminate cement in the special cement are mixed, so that the characteristics of the nano cement can be between those of the general cement and the special cement, and the nano cement is better suitable for application in special environments and is suitable for special environments in which cement materials are not well selected; simultaneously, adding a polymerization modifier into the mixture of the fly ash Portland cement and the sulphoaluminate cement to ensure that the fly ash Portland cement and the sulphoaluminate cement are combined more thoroughly; furthermore, the antifreezing agent, the silicon dioxide nano material, the lithium carbonate early strength agent, the water reducing agent and the carbon nano tube are respectively added, so that the finally formed nano cement has the advantages of no drying, antifreezing, quick condensation and high strength.

2. When the required nano cement needs to be prepared, firstly, the first material conveying mechanism is controlled to work through the control mechanism so as to convey the sulphoaluminate cement and the fly ash silicate cement to the magnetic oscillation stirring mechanism; then, the control mechanism controls the magnetic force oscillation stirring mechanism to work so as to oscillate and stir the sulphoaluminate cement and the fly ash silicate cement conveyed by the first conveying mechanism, and then convey a mixed material formed by stirring to the mixing mechanism; meanwhile, the control mechanism controls the second material conveying mechanism to work so as to convey the nanotube, the calcium chloride antifreezing agent, the polymerization modifier, the silicon dioxide nano material, the lithium carbonate early strength agent and the water reducing agent to the material mixing mechanism; and then, the control mechanism controls the material mixing mechanism to work so as to mix and stir the mixed material conveyed by the magnetic oscillation stirring mechanism and the material conveyed by the second material conveying mechanism to form the required nano cement. The whole operation is simple and convenient, and the production and the manufacture are facilitated.

Drawings

FIG. 1 is a schematic view of an intelligent production facility for nano-cement according to an embodiment of the present invention;

fig. 2 is a schematic view illustrating a first material conveying mechanism and a magnetic force oscillating stirring mechanism of the intelligent production equipment for nano cement according to the embodiment of the present invention are connected together;

fig. 3 is a schematic structural diagram of a vibrating assembly of a magnetic vibrating stirring mechanism of intelligent nano cement production equipment according to an embodiment of the invention;

fig. 4 is a schematic structural diagram of a magnetic stirring assembly of a magnetic oscillating stirring mechanism of intelligent nano cement production equipment according to an embodiment of the invention;

fig. 5 is a schematic structural diagram of a magnetic stirrer of a magnetic stirring assembly of a magnetic oscillating stirring mechanism of intelligent nano cement production equipment according to an embodiment of the invention;

fig. 6 is a schematic structural diagram of a first magnetic stirring bar of a magnetic stirrer of a stirring assembly of a magnetic oscillating stirring mechanism of intelligent nano cement production equipment according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a second magnetic stirring bar of a magnetic stirrer of a stirring assembly of a magnetic oscillating stirring mechanism of intelligent nano cement production equipment according to an embodiment of the invention;

fig. 8 is a schematic structural diagram of a second material conveying mechanism of the intelligent production equipment for nano cement according to the embodiment of the present invention.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

The first embodiment is as follows:

the present invention provides a preferred embodiment, which relates to a nano cement, comprising: 40 parts of fly ash portland cement, 52 parts of sulphoaluminate cement, 18 parts of carbon nano tubes, 2 parts of calcium chloride antifreezing agent, 1 part of polymeric modifier, 0.1 part of silicon dioxide nano material, 0.05 part of lithium carbonate early strength agent and 0.5 part of water reducing agent.

Among them, it should be noted that the sulphoaluminate cement not only has high early strength, but also has ever-increasing late strength. And simultaneously has the coagulation time meeting the use requirement. The compressive strength can reach 35-50 MPa within 12 h-1 d; the breaking strength can reach 6.5-7.5 MPa. The 3d compressive strength can reach 50-70 MPa; the breaking strength can reach 7.5-8.5 MPa.

The sulphoaluminate cement shows excellent frost resistance. It has the following characteristics:

a. the early strength of the cement is 5-8 times of that of portland cement when the cement is used at a low temperature of 0-10 ℃.

b. The concrete is used at the negative temperature of 0-minus 20 ℃, a small amount of antifreeze is added, and the concrete mold-entering temperature is maintained above 5 ℃, so that the construction can be normally carried out. The strength of the concrete for 3-7 days can reach 70-80% of the design grade.

c. The construction is carried out under the condition of alternating positive and negative temperature, and the influence on the later strength increase is not large. The freeze-thaw cycle is 200 times in the laboratory, and the concrete strength loss is not obvious. The freezing resistance grade can reach more than 200 #.

In addition, the fly ash portland cement is prepared by mixing portland cement clinker and fly ash with a proper amount of gypsum and grinding the mixture, and has the code number of P.F. The hydraulic cementing material is made up by grinding portland cement clinker, fly ash and proper quantity of gypsum, and is called fly ash portland cement, code P.F. The cement contains 20-40 wt% of fly ash, and has strength grade and strength requirement similar to that of Portland slag cement.

The fly ash portland cement has a compact structure, a small internal specific surface area, a much smaller water adsorption capacity and a small water requirement for cement hydration, so that the fly ash portland cement has small drying shrinkage and good crack resistance. In addition, the cement has low hydration heat, strong corrosion resistance and the like similar to common cement mixed with active mixed materials.

The unique properties of the fly ash portland cement are as follows:

(1) low early strength and large later strength enhancement rate: the early strength of the fly ash cement is low, and the early strength is greatly reduced along with the increase of the addition amount of the fly ash. Because the vitreous body in the fly ash is extremely stable, the fly ash particles are coated with Ca (OH) in the hydration process of fly ash cement₂The corrosion and damage speed is very slow, so the strength development of the fly ash cement is mainly reflected in the later period, and the later strength increase rate is large and can even exceed the later strength of the corresponding Portland cement.

(2) Good workability and small drying shrinkage: because most of the fly ash particles are closed and solid spheres and the inner surface area and the monomolecular adsorbed water are small, the fly ash cement has the characteristics of good workability, small drying shrinkage, high tensile strength and good crack resistance. This is a distinct advantage of fly ash cement.

(3) The corrosion resistance is good: the fly ash cement has higher fresh water and sulfate corrosion resistance due to active SiO in the fly ash₂And Ca (OH)₂The limit concentration (namely liquid phase alkalinity) required by the formed hydrated calcium silicate during the balance is much lower than that required by the hydrated calcium silicate in the ordinary portland cement during the balance, so that the leaching speed in fresh water is obviously reduced, and the fresh water corrosion resistance and the sulfate damage resistance of the cement are improved.

(4) Low hydration heat: the fly ash cement has slow hydration speed and low hydration heat, and particularly the hydration heat is obviously reduced when the addition amount of the fly ash is large.

Therefore, by mixing the fly ash portland cement in the general cement and the sulphoaluminate cement in the special cement, the characteristics of the nano cement in the embodiment can be between those of the general cement and the special cement, and the nano cement is better suitable for application in special environments and is suitable for special environments in which cement materials are not well selected; simultaneously, adding a polymerization modifier into the mixture of the fly ash Portland cement and the sulphoaluminate cement to ensure that the fly ash Portland cement and the sulphoaluminate cement are combined more thoroughly; furthermore, the antifreezing agent, the silicon dioxide nano material, the lithium carbonate early strength agent, the water reducing agent and the carbon nano tube are respectively added, so that the finally formed nano cement has the advantages of no drying, antifreezing, quick condensation and high strength.

Moreover, preferably, the nano-cement of the embodiment is prepared by the following preparation method, including:

s101, respectively conveying the fly ash Portland cement and the sulphoaluminate cement to specified positions in required parts, specifically, 40 parts of fly ash Portland cement and 52 parts of sulphoaluminate cement, and then stirring the fly ash Portland cement and the sulphoaluminate cement to obtain required mixed cement;

step S102, conveying the mixed cement to another specified position, adding 1 part of polymerization modifier to the mixed cement, and mixing and stirring for 40 minutes;

step S103, adding the required amount of silicon dioxide nano material, specifically 0.1 part of silicon dioxide nano material, into the mixed cement, and then mixing and stirring for 20 minutes;

step S104, adding 18 parts of carbon nano tubes in required parts into the mixed cement, and then mixing and stirring for 2 hours;

and S105, adding the required parts of calcium chloride antifreezing agent, lithium carbonate early strength agent and water reducing agent into the mixed cement, specifically, 2 parts of calcium chloride antifreezing agent, 0.05 part of lithium carbonate early strength agent and 0.5 part of water reducing agent, and then mixing and stirring for 50 minutes to form the finally required nano cement.

Preferably, the carbon nanotubes in this embodiment are prepared by a hydrothermal method. The carbon nanotube, also called buckytubes, is a one-dimensional quantum material with a special structure (the radial dimension is nanometer magnitude, the axial dimension is micrometer magnitude, and both ends of the tube are basically sealed). Carbon nanotubes are coaxial circular tubes consisting of several to tens of layers of carbon atoms arranged in a hexagonal pattern. The layers are maintained at a fixed distance of about 0.34nm, with a diameter of typically 2-20 nm. And the carbon hexagons can be divided into three types, namely a zigzag type, an armchair type and a spiral type, according to different orientations of the carbon hexagons in the axial direction. Wherein the helical carbon nanotubes have chirality, and the zigzag and armchair carbon nanotubes have no chirality.

The carbon nano tube is used as a one-dimensional nano material, has light weight, perfect connection of a hexagonal structure and a plurality of abnormal mechanical, electrical and chemical properties. Meanwhile, carbon atoms in the carbon nano tube are hybridized by SP2, compared with SP3, the S-orbit component in SP2 hybridization is larger, so that the carbon nano tube has high modulus and high strength.

The carbon nano tube has good mechanical property, the tensile strength of the CNTs reaches 50-200 GPa, which is 100 times of that of steel, the density of the CNTs is only 1/6 of the steel, and the CNTs is at least one order of magnitude higher than that of the conventional graphite fiber; its elastic modulus can reach 1TPa, which is equivalent to that of diamond, about 5 times that of steel. The tensile strength of the single-walled carbon nanotubes with the desired structure is about 800 GPa. The structure of carbon nanotubes is similar to that of polymer materials, but is much more stable than polymer materials. Carbon nanotubes are the highest specific strength material that can be produced at present. If other engineering materials are used as a matrix and the carbon nano tube is prepared into the composite material, the composite material can show good strength, elasticity, fatigue resistance and isotropy, and the performance of the composite material is greatly improved.

The hardness of the carbon nano tube is equivalent to that of diamond, but the carbon nano tube has good flexibility and can be stretched. In reinforcing fibers commonly used in industry, one key factor determining strength is the aspect ratio, i.e., the ratio of length to diameter. Material engineers desire a length to diameter ratio of at least 20:1, while carbon nanotubes typically have a length to diameter ratio of greater than 1000:1, which is a desirable high strength fiber material.

Example two:

the present invention provides a preferred embodiment, which relates to a nano cement, comprising: 48 parts of fly ash portland cement, 60 parts of sulphoaluminate cement, 20 parts of carbon nano tubes, 4 parts of calcium chloride antifreezing agent, 3 parts of polymeric modifier, 0.6 part of silicon dioxide nano material, 0.1 part of lithium carbonate early strength agent and 1.0 part of water reducing agent.

s101, respectively conveying the fly ash Portland cement and the sulphoaluminate cement to specified positions in required parts, specifically 48 parts of fly ash Portland cement and 60 parts of sulphoaluminate cement, and then stirring the fly ash Portland cement and the sulphoaluminate cement to obtain required mixed cement;

step S102, conveying the mixed cement to another specified position, adding 3 parts of polymerization modifier to the mixed cement, and mixing and stirring for 45 minutes;

step S103, adding the required amount of silicon dioxide nano material, specifically, 0.6 part of silicon dioxide nano material, into the mixed cement, and then mixing and stirring for 25 minutes;

step S104, adding 20 parts of carbon nano tubes in required parts into the mixed cement, and then mixing and stirring for 2.2 hours;

and S105, adding 4 parts of calcium chloride antifreezing agent, 0.1 part of lithium carbonate early strength agent and 1.0 part of water reducing agent in required parts into the mixed cement, and then mixing and stirring for 55 minutes to form the finally required nano cement.

Example three:

referring to fig. 1, the present invention provides another preferred embodiment, which relates to an intelligent production apparatus 1 for nanometer cement, including a base plate 10, a first material conveying mechanism 20, a magnetic oscillating stirring mechanism 30, a second material conveying mechanism 40, a material mixing mechanism 50, and a control mechanism (not shown in the figure), and the following describes each part of the intelligent production apparatus 1 further:

the base plate 10 is used for mounting components, and preferably, the base plate 10 is made of a steel plate to ensure sufficient strength;

the first material conveying mechanism 20 is arranged on the base plate 10 and used for conveying sulphoaluminate cement and fly ash portland cement to a specified position;

the magnetic oscillating and stirring mechanism 30 is arranged on the base plate 10, is connected with the first material conveying mechanism 20, and is used for receiving sulphoaluminate cement and fly ash portland cement conveyed by the first material conveying mechanism 20, oscillating and stirring the sulphoaluminate cement and the fly ash portland cement, and conveying a mixture formed by stirring to a specified position;

the second material conveying mechanism 40 is arranged on the base plate 10 and used for conveying the nanotube, the calcium chloride antifreezing agent, the polymerization modifier, the silicon dioxide nano material, the lithium carbonate early strength agent and the water reducing agent to a specified position;

the mixing mechanism 50 is arranged on the base plate 10, is respectively connected with the second material conveying mechanism 40 and the magnetic force oscillating and stirring mechanism 30, and is used for receiving the mixture conveyed by the magnetic force oscillating and stirring mechanism 30 and the material conveyed by the second material conveying mechanism 40, and stirring and mixing the mixture conveyed by the magnetic force oscillating and stirring mechanism 30 and the material conveyed by the second material conveying mechanism 40 to form the required nano cement; wherein, the mixing mechanism 50 is connected with the magnetic shaking stirring mechanism 30 through a connecting pipe 51, and the mixing mechanism 50 can be an existing stirrer, such as a modification of UJZ-15 mortar stirrer;

the control mechanism is electrically connected to the first material conveying mechanism 20, the magnetic force oscillating and stirring mechanism 30, the second material conveying mechanism 40 and the material mixing mechanism 50, and is used for controlling the first material conveying mechanism 20, the magnetic force oscillating and stirring mechanism 30, the second material conveying mechanism 40 and the material mixing mechanism 50 to work.

Accordingly, when the required nano cement needs to be prepared, firstly, the control mechanism controls the first material conveying mechanism 20 to work so as to convey the sulphoaluminate cement and the fly ash silicate cement to the magnetic oscillation stirring mechanism 30; then, the control mechanism controls the magnetic oscillation stirring mechanism 30 to work so as to oscillate and stir the sulphoaluminate cement and the fly ash silicate cement conveyed by the first conveying mechanism 20, and then convey a mixed material formed by stirring to the mixing mechanism 50; meanwhile, the control mechanism controls the second material conveying mechanism 40 to work so as to convey the nanotube, the calcium chloride antifreezing agent, the polymerization modifier, the silicon dioxide nano material, the lithium carbonate early strength agent and the water reducing agent to the material mixing mechanism 50; then, the control mechanism controls the material mixing mechanism 50 to work, so as to mix the mixed material delivered by the magnetic oscillating stirring mechanism 30 and the material delivered by the second material delivery mechanism 40, so as to form the required nano cement.

Referring to fig. 2 to 4, the magnetic oscillating stirring mechanism 30 of the present embodiment preferably includes a fixed base 31, a cylinder 32, an oscillating assembly 33, and a magnetic stirring assembly 34, and the following further describes each part of the magnetic oscillating stirring mechanism 30:

the fixed base 31 is arranged on the base plate 10, wherein the fixed base 31 is preferably a round cap structure;

the cylinder 32 is arranged on the fixed base 31 and used for storing sulphoaluminate cement and fly ash silicate cement conveyed by the first conveying mechanism 20; wherein, preferably, the cylinder 32 is a cylinder structure, so as to be conveniently arranged on the fixed base 31 and to be connected with the fixed base 31 in a matching way;

the oscillating assembly 33 is arranged on the fixed base 31 and positioned inside the cylinder 32 and is used for oscillating the sulphoaluminate cement and the fly ash silicate cement stored in the cylinder 32;

the magnetic stirring assembly 34 is arranged on the cylinder 32, the stirring end of the magnetic stirring assembly 34 extends into the cylinder 32, and the magnetic stirring assembly 34 is positioned above the oscillating assembly 33 and is used for stirring the sulphoaluminate cement and the fly ash silicate cement stored in the cylinder 32.

When the magnetic force oscillation stirring mechanism 30 works, the oscillation component 33 can oscillate the sulphoaluminate cement and the fly ash silicate cement stored in the cylinder 32, and simultaneously, the magnetic force stirring component 34 can stir the sulphoaluminate cement and the fly ash silicate cement stored in the cylinder 32, so that the sulphoaluminate cement and the fly ash silicate cement can be mixed more smoothly and efficiently, and are more uniform and finer.

Referring to fig. 3, preferably, the oscillating assembly 33 of the present embodiment includes an oscillating plate 331 and an oscillator 332, wherein the oscillating plate 331 is a circular plate, and is hermetically disposed on the fixed base 31, a sealed cavity is formed between a lower end surface of the oscillating plate 331 and an upper end surface of the fixed base 31, and the oscillator 332 is disposed on the lower end surface of the oscillating plate 331 and located in the sealed cavity, so as to ensure that the oscillator 332 is not affected by other materials or components, and can effectively perform its oscillating function. In particular, the oscillator 332 generates an oscillating force when operating, and the oscillating force can act on the sulphoaluminate cement and the fly ash silicate cement in the cylinder 32 through the oscillating plate 331 so as to oscillate the sulphoaluminate cement and the fly ash silicate cement in the cylinder 32.

In order to ensure that the oscillator 332 is hermetically disposed in the sealed cavity, the outer edge of the oscillating plate 331 is provided with a sealing member 333, and the oscillating plate 331 is hermetically disposed on the fixing base 31 through the sealing member 333. Preferably, the sealing member 333 is a sealing rubber ring, so that the sealing effect of the sealing oscillator 332 is ensured, and the flexible feature of the sealing member 333 prevents the oscillation of the oscillation plate 331 from being obstructed by the cylinder 32, thereby further ensuring the high efficiency of the raw material mixing.

Referring to fig. 4 to 7, preferably, the magnetic stirring assembly 34 of the present embodiment includes a magnetic stirring motor 341 and a plurality of magnetic stirrers 342, the magnetic stirring motor 341 is disposed on the cylinder 32, an output shaft of the magnetic stirring motor 341 extends into the cylinder 32, the plurality of magnetic stirrers 342 are uniformly disposed on the output shaft of the magnetic stirring motor with an axis of the output shaft of the magnetic stirring motor 341 as a center line, and the plurality of magnetic stirrers 342 are disposed in the cylinder 32.

It should be noted that in the magnetic stirring assembly 34 of the present embodiment, the magnetic stirring motor 341 drives the high temperature resistant powerful magnet to rotate to generate the rotating magnetic field to drive the plurality of magnetic stirrers 342 inside the cylinder 32 to rotate, so as to stir, mix or assist in heating the sulphoaluminate cement and the fly ash silicate cement stored in the cylinder 32.

Preferably, in the present embodiment, three magnetic stirrers 342 are provided, so as to ensure that the stirring requirement is satisfied and simultaneously, the production cost can be reduced; of course, the magnetic stirrer 342 may be provided with four, five, six, etc. according to actual requirements, and these embodiments also belong to the protection scope of the present embodiment.

Further, in order to ensure that the magnetic stirrer 342 can stir the sulphoaluminate cement and the fly ash silicate cement stored in the cylinder 32 uniformly and finely, the magnetic stirrer 342 comprises a first magnetic stirring strip 3421, a second magnetic stirring strip 3422 and a third magnetic stirring strip 3423, and the first magnetic stirring strip 3421 is vertically connected to an output shaft of the magnetic stirring motor 341; the second magnetic stirring bar 3422 is vertically connected to the output shaft of the magnetic stirring motor 341 and is parallel to the first magnetic stirring bar 3421 at intervals; one end of the third magnetic stirring bar 3423 is vertically connected to the first magnetic stirring bar 3421, and the other end is vertically connected to the second magnetic stirring bar 3422.

Meanwhile, in order to facilitate the connection and fixation of the magnetic stirrer 342 to the output shaft of the magnetic stirring motor 341, the magnetic stirrer 342 is provided to the output shaft of the magnetic stirring motor 341 through a fixing block 343. Specifically, two fixing blocks 343 are provided corresponding to each magnetic stirrer 342, one end of one of the fixing blocks 343 is connected to an output shaft of the magnetic stirring motor 341, the other end is connected to the first magnetic stirring bar 3421, one end of the other fixing block 343 is connected to an output shaft of the magnetic stirring motor 341, and the other end is connected to the second magnetic stirring bar 3422. Therefore, each magnetic stirrer 342 can be firmly connected and fixed to the output shaft of the magnetic stirring motor 341.

In addition, the first magnetic stirring bar 3421 preferably has a structure including a first inner end magnetic connection block 34211, a first outer end magnetic connection block 34212, two first connection members 34213, and a plurality of first stirring curved bars 34214, wherein the first inner end magnetic connection block 34211 and the first outer end magnetic connection block 34212 are disposed at an interval, the two first connection members 34213 are respectively disposed at two sides of the first inner end magnetic connection block 34211 and the first outer end magnetic connection block 34212 and are respectively connected to two sides of the first inner end magnetic connection block 34211 and the first outer end magnetic connection block 34212, the plurality of first stirring curved bars 34214 are uniformly and alternately disposed between the first inner end magnetic connection block 34211 and the first outer end magnetic connection block 34212 and are respectively connected to the first inner end magnetic connection block 34211 and the first outer end magnetic connection block 34212, and the first inner end magnetic connection block 34211 is connected to one of the fixing blocks 343. Preferably, four first stirring curved rods 34214 are provided to ensure that the stirring requirement is achieved and to reduce the material waste.

The second magnetic stirring bar 3422 preferably has a structure including a second inner end magnetic connection block 34221, a second outer end magnetic connection block 34222, two second connection pieces 34223, and a plurality of second stirring curved bars 34224, wherein the second inner end magnetic connection block 34221 and the second outer end magnetic connection block 34222 are oppositely disposed at intervals, the two second connection pieces 34223 are respectively disposed at two sides of the second inner end magnetic connection block 34221 and the second outer end magnetic connection block 34222 and are respectively connected to the second inner end magnetic connection block 34221 and the two sides of the second outer end magnetic connection block 34222, the plurality of second stirring curved bars 34224 are uniformly and alternately disposed between the second inner end magnetic connection block 34221 and the second outer end magnetic connection block 34222 and are respectively connected to the second inner end magnetic connection block 34221 and the second outer end magnetic connection block 34222, and the second inner end magnetic connection block 34221 is connected to another fixing block 343. Preferably, four second stirring curved rods 34224 are provided to ensure that the stirring requirement is met and simultaneously to reduce the material waste.

The third magnetic stirring bar 3423 preferably has a structure including two magnetic stirring convex groups 34231, the two magnetic stirring convex groups 34231 are clamped on both the first external magnetic connecting block 34212 and the second external magnetic connecting block 34222, each magnetic stirring convex group 34231 includes a plurality of stirring ribs 342311, and the plurality of stirring ribs 342311 are uniformly spaced on both the first external magnetic connecting block 34212 and the second external magnetic connecting block 34222. Preferably, each magnetic stirring convex group 34231 includes three stirring ridges 342311 to ensure that the stirring requirement is achieved and to reduce the waste of material.

Accordingly, due to the arrangement of the first curved stirring rod 34214 and the second curved stirring rod 34224, the stirring rib 342311 can generate a swinging motion during the stirring process, and the mixing of the sulphoaluminate cement and the fly ash portland cement is faster and more thorough in cooperation with the vibration of the raw materials; meanwhile, due to the fact that the first stirring curved rod 34214, the second stirring curved rod 34224 and the stirring convex edge 342311 are designed in a multi-strip mode, the mixed materials of the sulphoaluminate cement and the fly ash Portland cement can be mixed in a mixing process in a strand-by-strand mode, and the mixing speed and the mixing degree of the raw materials are further improved.

Referring to fig. 2, the first feeding mechanism 20 of the present embodiment preferably includes a first left feeding pipe 21, a first left electromagnetic control valve 22, a first right feeding pipe 23, and a first right electromagnetic control valve 24, and the following describes each part of the first feeding mechanism 20 further:

the first left-end material conveying pipe 21 is connected to the cylinder 32, is communicated with the cylinder 32 and is used for conveying sulphoaluminate cement placed at a specified position into the cylinder 32;

the first left-end electromagnetic control valve 22 is arranged on the first left-end delivery pipe 21 and is used for controlling the quantity of the sulphoaluminate cement delivered into the cylinder 32;

the first right material conveying pipe 23 is connected to the cylinder 32, is communicated with the cylinder 32, and is used for conveying the fly ash silicate cement placed at a specified position into the cylinder 32;

the first right electromagnetic control valve 24 is arranged on the first right material conveying pipe 23 and is used for controlling the quantity of the fly ash portland cement conveyed into the cylinder 32.

Therefore, when the first material conveying mechanism 20 works, the first left-end electromagnetic control valve 22 is opened, so that the sulphoaluminate cement can be conveyed into the cylinder 32 through the first left-end material conveying pipe 21, and if the quantity of the sulphoaluminate cement meets the requirement, the first left-end electromagnetic control valve 22 is automatically closed; simultaneously, the first right-end electromagnetic control valve 24 is also opened, so that the fly ash portland cement can be conveyed into the barrel 32 through the first right-end conveying pipe 23, and if the quantity of the fly ash portland cement reaches the requirement, the first right-end electromagnetic control valve 24 is automatically closed. The whole operation is simple and convenient, and the sulphoaluminate cement and the coal ash Portland cement with required weight can be reasonably and effectively conveyed into the cylinder 32.

Referring to fig. 8, the second feeding mechanism 40 of the present embodiment preferably includes a first feeding assembly 41, a second feeding assembly 42, a third feeding assembly 43, a fourth feeding assembly 44, a fifth feeding assembly 45, and a sixth feeding assembly 46, and the following describes each part of the second feeding mechanism 40:

the first material conveying assembly 41 is arranged on the base plate 10, connected to the material mixing mechanism 50 and used for conveying the nanotubes placed at the designated position to the material mixing mechanism 50;

the second material conveying assembly 42 is arranged on the base plate 10 and connected to the material mixing mechanism 50, and the second material conveying assembly 42 is arranged adjacent to the first material conveying assembly 41 and used for conveying the calcium chloride antifreeze agent arranged at the designated position to the material mixing mechanism 50;

the third material conveying assembly 43 is arranged on the base plate 10 and connected to the material mixing mechanism 50, and the third material conveying assembly 43 is arranged adjacent to the second material conveying assembly 42 and used for conveying the polymerization modifier arranged at the designated position to the material mixing mechanism 50;

the fourth material conveying assembly 44 is arranged on the base plate 10 and connected to the material mixing mechanism 50, and the fourth material conveying assembly 44 is arranged adjacent to the third material conveying assembly 43 and used for conveying the silicon dioxide nano material arranged at the designated position to the material mixing mechanism 50;

the fifth material conveying assembly 45 is arranged on the base plate 10 and connected to the material mixing mechanism 50, and the fifth material conveying assembly 45 is arranged adjacent to the fourth material conveying assembly 44 and used for conveying the lithium carbonate early strength agent arranged at the designated position to the material mixing mechanism 50;

the sixth transporting assembly 46 is disposed on the base plate 10 and connected to the mixing mechanism 50, and the sixth transporting assembly 46 is disposed adjacent to the fifth transporting assembly 45, and is configured to transport the water reducing agent disposed at the designated position to the mixing mechanism 50.

Therefore, when the second material conveying mechanism 40 works, the first material conveying assembly 41 conveys the nanotubes arranged at the designated position to the material mixing mechanism 50, the second material conveying assembly 42 conveys the calcium chloride antifreeze arranged at the designated position to the material mixing mechanism 50, the third material conveying assembly 43 conveys the polymerization modifier arranged at the designated position to the material mixing mechanism 50, the fourth material conveying assembly 44 conveys the silica nanomaterial arranged at the designated position to the material mixing mechanism 50, the fifth material conveying assembly 45 conveys the lithium carbonate early strength agent arranged at the designated position to the material mixing mechanism 50, and the sixth material conveying assembly 46 conveys the water reducing agent arranged at the designated position to the material mixing mechanism 50. The whole operation is simple and convenient, and the required nanotube, calcium chloride antifreezing agent, polymerization modifier, silicon dioxide nano material, lithium carbonate early strength agent and water reducing agent can be conveyed into the mixing mechanism 50 in order and without mutual influence.

Preferably, in order to reasonably and effectively deliver the required amount of nanotubes into the mixing mechanism 50, the first delivery assembly 41 includes a first storage bin 411, a first connecting seat (not shown), a first feeding pipe 412, a first delivery pipe 413, and a first electromagnetic control valve 414, wherein the first connecting seat is disposed on the base plate 10; the first storage bin 411 is arranged on the first connecting seat and is fixedly connected to the base plate 10 through the first connecting seat; the first feeding pipe 413 is arranged at the upper end of one side of the first storage bin 411, is communicated with the first storage bin 411 and is used for conveying the nanotubes placed at the designated position into the first storage bin 411; one end of a first material conveying pipe 413 is connected to the lower end of one side of the first material bin 411 and is communicated with the first material bin 411, and the other end of the first material conveying pipe 413 is connected to the material mixing mechanism 50 and is communicated with the material mixing mechanism 50 and used for conveying the nanotubes placed in the first material bin 411 to the material mixing mechanism 50; the first electromagnetic control valve 414 is arranged on the first material conveying pipe 413 and is used for controlling the quantity of the nanotubes conveyed to the material mixing mechanism 50;

in order to reasonably and effectively deliver the required amount of calcium chloride antifreeze into the mixing mechanism 50, the second material delivery assembly 42 comprises a second material bin 421, a second connecting seat (not marked in the figure), a second material feeding pipe 422, a second material delivery pipe 423 and a second electromagnetic control valve 424, wherein the second connecting seat is arranged on the base plate 10; the second bin 421 is arranged on the second connecting seat and is connected and fixed on the base plate 10 through the second connecting seat; the second feeding pipe 422 is arranged at the upper end of one side of the second storage bin 421, is communicated with the second storage bin 421 and is used for conveying the calcium chloride antifreezing agent arranged at a specified position into the second storage bin 421; one end of the second material conveying pipe 423 is connected to the lower end of one side of the second material bin 421 and is communicated with the second material bin 421, and the other end of the second material conveying pipe 423 is connected to the material mixing mechanism 50 and is communicated with the material mixing mechanism 50 and is used for conveying the calcium chloride antifreezing agent in the second material bin 421 to the material mixing mechanism 50; the second electromagnetic control valve 424 is arranged on the second material conveying pipe 423 and is used for controlling the amount of the calcium chloride antifreezing agent conveyed to the material mixing mechanism 50;

in order to reasonably and effectively deliver the required amount of the polymeric modifier into the mixing mechanism 50, the third material delivery assembly 43 comprises a third material bin 431, a third connecting seat (not labeled in the figure), a third material inlet pipe 432, a third material delivery pipe 433 and a third electromagnetic control valve 434, wherein the third connecting seat is arranged on the base plate 10; the third bin 431 is arranged on the third connecting seat and is fixedly connected to the base plate 10 through the third connecting seat; a third feeding pipe 432 is arranged at the upper end of one side of the third bin 431, is communicated with the third bin 431, and is used for conveying the polymerization modifier placed at a designated position into the third bin 431; one end of a third material conveying pipe 433 is connected to the lower end of one side of the third bin 431 and is communicated with the third bin 431, and the other end of the third material conveying pipe 433 is connected to the material mixing mechanism 50 and is communicated with the material mixing mechanism 50 and is used for conveying the polymerization modifier placed in the third bin 431 to the material mixing mechanism 50; a third electromagnetic control valve 434 is arranged on the third material conveying pipe 433 and is used for controlling the amount of the polymerization modifier conveyed to the material mixing mechanism 50;

in order to reasonably and effectively deliver the required amount of silica nano-materials into the mixing mechanism 50, the fourth material delivery assembly 44 includes a fourth bin 441, a fourth connecting seat (not shown), a fourth material feeding pipe 442, a fourth material delivery pipe 443, and a fourth electromagnetic control valve 444, wherein the fourth connecting seat is arranged on the base plate 10; the fourth bin 441 is arranged on the fourth connecting seat and is fixedly connected to the base plate 10 through the fourth connecting seat; the fourth feeding pipe 442 is arranged at the upper end of one side of the fourth bin 441, is communicated with the fourth bin 441, and is used for conveying the silicon dioxide nano material placed at the designated position into the fourth bin 441; one end of a fourth material conveying pipe 443 is connected to the lower end of one side of the fourth bin 441 and is communicated with the fourth bin 441, and the other end of the fourth material conveying pipe 443 is connected to the material mixing mechanism 50 and is communicated with the material mixing mechanism 50 and is used for conveying the silicon dioxide nano-materials placed in the fourth bin 441 to the material mixing mechanism 50; the fourth electromagnetic control valve 444 is arranged on the fourth material conveying pipe 443 and is used for controlling the quantity of the silicon dioxide nano materials conveyed to the material mixing mechanism 50;

in order to reasonably and effectively send the required amount of the lithium carbonate early strength agent into the mixing mechanism 50, the fifth material conveying assembly 45 comprises a fifth material bin 451, a fifth connecting seat (not marked in the figure), a fifth material feeding pipe 452, a fifth material conveying pipe 453 and a fifth electromagnetic control valve 454, wherein the fifth connecting seat is arranged on the base plate 10; the fifth storage bin 451 is arranged on the fifth connecting seat and is fixedly connected to the base plate 10 through the fifth connecting seat; the fifth feeding pipe 452 is arranged at the upper end of one side of the fifth storage bin 451, is communicated with the fifth storage bin 451, and is used for conveying the lithium carbonate early strength agent placed at the designated position into the fifth storage bin 451; one end of a fifth conveying pipe 453 is connected to the lower end of one side of the fifth storage bin 451 and is communicated with the fifth storage bin 451, and the other end of the fifth conveying pipe 453 is connected to the mixing mechanism 50 and is communicated with the mixing mechanism 50 and used for conveying the lithium carbonate early strength agent in the fifth storage bin 451 to the mixing mechanism 50; a fifth electromagnetic control valve 454 is arranged on the fifth material conveying pipe 453 and is used for controlling the amount of the lithium carbonate early strength agent conveyed to the material mixing mechanism 50;

in order to reasonably and effectively deliver the required amount of water reducing agent into the mixing mechanism 50, the No. six material delivery assembly 46 comprises a No. six bin 461, a No. six connecting seat (not labeled in the figure), a No. six feeding pipe 462, a No. six material delivery pipe 463 and a No. six electromagnetic control valve 464, wherein the No. six connecting seat is arranged on the base plate 10; the sixth bin 461 is arranged on the sixth connecting seat and is fixedly connected to the base plate 10 through the sixth connecting seat; the sixth feeding pipe 462 is arranged at the upper end of one side of the sixth bin 461, is communicated with the sixth bin 461, and is used for conveying the water reducing agent placed at the designated position into the sixth bin 461; one end of a No. six delivery pipe 463 is connected to the lower end of one side of the No. six bin 461 and is communicated with the No. six bin 461, and the other end of the No. six delivery pipe 463 is connected to the mixing mechanism 50 and is communicated with the mixing mechanism 50 and is used for conveying the water reducing agent placed in the No. six bin 461 to the mixing mechanism 50; the sixth electromagnetic control valve 464 is arranged on the sixth delivery pipe 463 and is used for controlling the amount of the water reducing agent delivered to the mixing mechanism 50.

The above description is only exemplary of the present invention, and the structure is not limited to the above-mentioned shapes, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A nano-cement, comprising: 40-48 parts of fly ash portland cement, 52-60 parts of sulphoaluminate cement, 18-20 parts of carbon nano tube, 2-4 parts of calcium chloride antifreeze agent, 1-3 parts of polymerization modifier, 0.1-0.6 part of silicon dioxide nano material, 0.05-0.1 part of lithium carbonate early strength agent and 0.5-1.0 part of water reducing agent.

2. The nano-cement as claimed in claim 1, which is prepared by the following preparation method comprising:

s101, respectively conveying the fly ash Portland cement and the sulphoaluminate cement with required amounts to specified positions, and stirring the fly ash Portland cement and the sulphoaluminate cement to obtain required mixed cement;

s102, conveying the mixed cement to another specified position, adding the polymerization modifier in required amount into the mixed cement, and then mixing and stirring for 40-45 minutes;

s103, adding the required amount of the silicon dioxide nano material into the mixed cement, and then mixing and stirring for 20-25 minutes;

s104, adding the required amount of the carbon nano tubes into the mixed cement, and then mixing and stirring for 2-2.2 hours;

and S105, adding the required parts of the calcium chloride antifreezing agent, the lithium carbonate early strength agent and the water reducing agent into the mixed cement, and then mixing and stirring for 50-55 minutes to form the finally required nano cement.

3. The nano-cement of claim 1, wherein the carbon nanotubes are hydrothermal carbon nanotubes.

4. An intelligent production facility of nanometer cement, characterized by includes:

the base plate is used for installing and arranging components;

5. The intelligent production facility of nanometer cement of claim 4, characterized in that, the magnetic force vibrates rabbling mechanism includes:

the fixed base is arranged on the base plate;

the cylinder is arranged on the fixed base and used for storing the sulphoaluminate cement and the fly ash silicate cement conveyed by the first conveying mechanism;

the vibration assembly is arranged on the fixed base, is positioned in the barrel and is used for performing vibration operation on the sulphoaluminate cement and the fly ash silicate cement stored in the barrel;

the magnetic stirring assembly is arranged on the barrel, the stirring end of the magnetic stirring assembly extends into the barrel, and the magnetic stirring assembly is located above the oscillating assembly and used for stirring sulphoaluminate cement and fly ash silicate cement stored in the barrel.

6. The intelligent production equipment of nanometer cement of claim 5, wherein the oscillation assembly comprises an oscillation plate and an oscillator, the oscillation plate is hermetically arranged on the fixed base, a sealed cavity is formed between the lower end surface of the oscillation plate and the upper end surface of the fixed base, and the oscillator is arranged on the lower end surface of the oscillation plate and is located in the sealed cavity.

7. The intelligent nanometer cement production facility as claimed in claim 5, wherein the magnetic stirring assembly comprises a magnetic stirring motor and a plurality of magnetic stirrers, the magnetic stirring motor is disposed on the barrel, an output shaft of the magnetic stirring motor extends into the barrel, the plurality of magnetic stirrers are uniformly disposed on the output shaft of the magnetic stirring motor with an axis of the output shaft of the magnetic stirring motor as a center line, and the plurality of magnetic stirrers are disposed in the barrel.

8. The intelligent nano-cement production equipment according to claim 7, wherein the magnetic stirrer comprises a first magnetic stirring bar, a second magnetic stirring bar and a third magnetic stirring bar, and the first magnetic stirring bar is vertically connected to an output shaft of the magnetic stirring motor; the second magnetic stirring strip is vertically connected to an output shaft of the magnetic stirring motor and is parallel to the first magnetic stirring strip at intervals; one end of the third magnetic stirring strip is vertically connected with the first magnetic stirring strip, and the other end of the third magnetic stirring strip is vertically connected with the second magnetic stirring strip.

9. The intelligent production facility of nanometer cement of claim 5, characterized in that, the first material conveying mechanism includes:

the first left-end conveying pipe is connected to the cylinder, communicated with the cylinder and used for conveying the sulphoaluminate cement placed at a specified position into the cylinder;

the first left-end electromagnetic control valve is arranged on the first left-end conveying pipe and used for controlling the quantity of the sulphoaluminate cement conveyed into the cylinder;

the first right-end conveying pipe is connected to the cylinder, communicated with the cylinder and used for conveying the fly ash silicate cement placed at a specified position into the cylinder;

the first right-end electromagnetic control valve is arranged on the first right-end conveying pipe and used for controlling the quantity of the fly ash portland cement conveyed into the cylinder.

10. The intelligent production facility of nano-cement according to any one of claims 4 to 9, wherein the second feeding mechanism comprises:

the first material conveying assembly is arranged on the base plate, connected to the material mixing mechanism and used for conveying the nanotubes placed at the designated position to the material mixing mechanism;

the second material conveying assembly is arranged on the base plate and connected to the material mixing mechanism, is adjacent to the first material conveying assembly and is used for conveying the calcium chloride antifreezing agent arranged at a specified position to the material mixing mechanism;

the third material conveying assembly is arranged on the base plate and connected to the material mixing mechanism, is adjacent to the second material conveying assembly and is used for conveying the polymerization modifier arranged at a specified position to the material mixing mechanism;

the fourth material conveying assembly is arranged on the base plate and connected to the material mixing mechanism, is adjacent to the third material conveying assembly and is used for conveying the silicon dioxide nano material arranged at the designated position to the material mixing mechanism;

the fifth material conveying assembly is arranged on the base plate and connected to the material mixing mechanism, is adjacent to the fourth material conveying assembly and is used for conveying the lithium carbonate early strength agent arranged at the designated position to the material mixing mechanism;

the material conveying assembly is arranged on the base plate and connected to the material mixing mechanism, and the material conveying assembly is adjacently arranged on the material conveying assembly and used for conveying the water reducing agent arranged at the designated position to the material mixing mechanism.