Low-shrinkage and high-strength decorative surface mortar for floor and preparation device and method thereof

Abstract

The invention discloses low-shrinkage and high-strength decorative surface mortar for floor, and a preparation device and a preparation method thereof. The mortar comprises a mortar body composed of silicate cement, aluminate cement, high-belite cement, mineral powder, silica fume, gypsum, spherical special aggregate, natural aggregate, heavy calcium powder and an admixture, wherein the mass percentage of each component is as follows: silicate cement: 7.0-9.0%, aluminate cement: 9.5-12.5%, high-belite cement: 6.0-8.0%, mineral powder: 4.5-7.0%, silica fume: 0.5-1.0%, gypsum: 4.5-8.5%, spherical special aggregate: 28.5-33.5%, natural aggregate: 15.5-20.5%, heavy calcium powder: 12.0-16.0%, and admixture 2.2-3.8%, the sum of the components is 100%, and the addition amount of water is 18.5%-19.5% of the total mass of the mortar. The present invention enables the mortar to have very high physical properties and decorative properties, is suitable for a variety of industrial and commercial floors, and can provide a better stirring and mixing effect of the mortar in a low-temperature environment.

Description

Technical Field

[0001] The invention relates to the technical field of mortar preparation, and in particular to low-shrinkage and high-strength decorative surface mortar for floors and a preparation device and method thereof. Background Art

[0002] Mortar is made by mixing inorganic cementitious materials with fine aggregate and water in proportion, also known as mortar, which is used for masonry and plastering projects. It can be divided into masonry mortar and plastering mortar. The former is used for masonry of bricks, stones, blocks, etc. and component installation; the latter is used for plastering of walls, floors, roofs and beam-column structures to achieve protection and decoration requirements. The current cement-based floor materials can be roughly divided into three types:

[0003] 1. Wear-resistant floor

[0004] During the construction, wear-resistant powder is spread on the surface of the initial concrete and the surface is polished at the same time. Due to the integrated construction with concrete, it will crack synchronously with the concrete in the later stage. The surface effect is mostly the traditional concrete color, and a small amount of dark colors can be selected. The overall effect is industrial style, and the decorative effect is very poor. It is mostly suitable for industrial plants, not for commercial floors.

[0005] 2. Cement-based self-leveling

[0006] It has good fluidity and can be leveled with a precision of 3-4mm. It will provide a certain expansion stress in the early and middle stages to offset the shrinkage of the material. In the later stages, as the shrinkage stress of the material continues to increase, a large number of microcracks will appear, accompanied by certain long cracks and hollowing. Water marks, spots and uneven color are very likely to appear during the construction process, resulting in poor decorative effect.

[0007] 3. Cement-based grinding stone

[0008] It has a wide range of colors and aggregates to choose from, as well as a variety of shapes, a dense and bright surface, and is highly decorative. It also has high strength, high hardness, and excellent wear resistance, and is dustproof and anti-slip. However, its high cost and long construction period limit its application areas, and the shrinkage cracking problem has always been difficult to solve.

[0009] The mortars used for these three base floor materials cannot simultaneously meet the high-strength and low-shrinkage and crack-resistant properties in the subsequent process, and cannot meet the high-end decorative and rapid construction and low-cost requirements. In addition, although the current mortar aeration, stirring and mixing device can effectively guarantee the subsequent cleaning effect during use, the mortar has poor fluidity and the actual stirring effect is not ideal. In addition, in a low-temperature environment, the mortar is easy to agglomerate on the inner wall, resulting in practical problems such as inconvenient discharge.

[0010] Therefore, how to provide low-shrinkage and high-strength decorative surface mortar for floor and its preparation device and preparation method is a problem that technical personnel in this field urgently need to solve. Summary of the invention

[0011] One purpose of the present invention is to provide a low-shrinkage and high-strength decorative surface mortar for flooring and a preparation device and method thereof. The present invention enables the mortar to have very high physical properties and decorative properties, and is suitable for a variety of industrial and commercial floors.

[0012] According to the embodiments of the present invention, the low-shrinkage and high-strength decorative surface mortar for floor and its preparation device and preparation method, the low-shrinkage and high-strength decorative surface mortar for floor includes a mortar body composed of silicate cement, aluminate cement, high-belite cement, mineral powder, silica fume, gypsum, spherical special aggregate, natural aggregate, heavy calcium powder and admixture, and the mass percentage of each component is: silicate cement: 7.0-9.0%, aluminate cement: 9.5-12.5%, high-belite cement: 6.0-8.0%, mineral powder: 4.5-7.0%, silica fume: 0.5-1.0%, gypsum: 4.5-8.5%, spherical special aggregate: 28.5-33.5%, natural aggregate: 15.5-20.5%, heavy calcium powder: 12.0-16.0%, admixture 2.2-3.8%, the sum of each component is 100%, and the amount of water added is 18.5%-19.5% of the total mass of the mortar.

[0013] Furthermore, the strength grade of silicate cement is PⅠ52.5 silicate cement, the type of aluminate cement is CA-50, and the gypsum is anhydrite, that is, anhydrous calcium sulfate (CaSO4).

[0014] Furthermore, the mesh range of spherical special aggregate is 35-100 mesh, the sphericity and roundness are both greater than 0.85, the natural aggregate is washed and dried river sand, the mesh range is 40-120 mesh, and the heavy calcium powder is 400 mesh.

[0015] Furthermore, the admixture includes high-efficiency water reducing agent, redispersible latex powder, water retaining agent, viscosity stabilizer, defoaming agent, bubble inhibitor, retarder, early strength agent, dispersing wetting agent and sodium polyacrylate, and the dosages thereof are respectively: high-efficiency water reducing agent accounts for 0.13%-0.25% of the total amount; redispersible latex powder accounts for 1.5%-2.5% of the total amount; water retaining agent accounts for 0.05%-0.07% of the total amount; viscosity stabilizer accounts for 0.01%-0.03% of the total amount; defoaming agent accounts for 0.1%-0.15% of the total amount; bubble inhibitor accounts for 0.05%-0.10% of the total amount, and retarder accounts for 0.04%-0.15% of the total amount; early strength agent accounts for 0.05%-0.1% of the total amount; dispersing wetting agent accounts for 0.12%-0.23% of the total amount, and dispersing retarder accounts for 0.15%-0.22% of the total amount.

[0016] Furthermore, the high-efficiency water-reducing agent is a polycarboxylate water-reducing agent; the redispersible latex powder is a copolymer of 1-5 substances selected from acrylate, vinyl acetate, versatate and ethylene; the water-retaining agent is a water-soluble hydroxyethyl cellulose ether or hydroxypropyl methyl cellulose ether powder; the viscosity stabilizer is a polymer stabilizer containing an inorganic anti-caking agent; the defoaming agent is a mixture of 1-5 substances selected from polyols, polysiloxane compounds and non-crystalline silica; the bubble inhibitor is a mixture of fatty alcohols and silicone; the retarder is 2,3-dihydroxysuccinic acid and sodium citrate and a mixture of the two; the early strength agent is lithium sulfate or lithium carbonate powder; the dispersing wetting agent is a sulfonated naphthalene powder; and the dispersing retarder is a sodium polyacrylate powder with a molecular weight of 1000.

[0017] A preparation device for low-shrinkage and high-strength decorative surface mortar for floor, comprising a mixing unit, the mixing unit comprising a mixing chamber and a top end cover sealed above the mixing chamber, the mixing chamber being fixed above a base, the bottom of the top end cover being fixedly connected to a dust screen, the bottom of the mixing chamber being connected to a discharge port through a valve, the outer surface of the mixing chamber being fixedly connected to an outer protective layer, the outer protective layer and the opposite side of the mixing chamber being fixedly connected to a guide mechanism;

[0018] A spiral guide plate, wherein the spiral guide plate is fixed between the stirring chamber and the outer protective layer, the spiral guide plate is spiral-shaped, and the upper part of one side of the outer protective layer is connected to the upper part of the stirring chamber through a connecting air pipe;

[0019] Eight groups of aeration pipes are connected to the bottom of the mixing chamber and have different lengths. The eight groups of aeration pipes are distributed in a circular array on the surface of the mixing chamber. The eight groups of aeration pipes are connected to the high-pressure thermal fans through baffles. The high-pressure thermal fans are fixed on the base.

[0020] Furthermore, a stirring direction adjusting mechanism is provided at the bottom of the mixing chamber, and the stirring direction adjusting mechanism includes eight groups of aeration pipes and a pressure dividing chamber fixed to the base, the eight groups of aeration pipes are connected to one side of the pressure dividing chamber, and the bottom of the pressure dividing chamber is connected to the air outlet of the high-pressure thermal blower through a connecting pipe, and two groups of actuator electric cylinders are fixed to the other side of the pressure dividing chamber, and the two groups of actuator electric cylinders are movably connected to the swing frame inside the pressure dividing chamber through connecting sliding pins respectively, a sliding groove is provided on the surface of the swing frame, and the connecting sliding pin is slidably connected to the sliding groove, one side of the swing frame is rotatably connected to the pressure dividing chamber through an axial rod, and the other side of the swing frame is movably connected to the baffle plate through a pin seat, and the baffle plate is aligned with the aeration pipe port.

[0021] Furthermore, the guide mechanism includes a spiral guide plate and six groups of bosses, the six groups of bosses are fixed on the surface of the spiral guide plate, and the distribution angle between the bosses is 180 degrees, and a vibration component is arranged between two adjacent groups of bosses.

[0022] Furthermore, the vibration assembly includes a paddle plate and a return spring, the paddle plate is elastically connected to the inner surface of the outer protective layer through the return spring, a rubber column is provided on one side of the paddle plate, the rubber column is in contact with the outer surface of the stirring chamber, and one side of the paddle plate moves on the inner surface of the outer protective layer through a rotating shaft.

[0023] The preparation method of the low shrinkage and high strength decorative surface mortar preparation device for floor, the specific steps are as follows:

[0024] S1. Various mortar raw materials and water directly enter the bottom of the mixing chamber from the feed port on the top end cover to be accumulated. Then the feed port on the top end cover is closed, and the high-pressure thermal fan fixed on the base works. By introducing high-pressure temperature gas into the pressure chamber, the gas enters the aeration pipe at this time, and enters the bottom of the mixing chamber at the port on the other side of the aeration pipe. The raw materials in the mixing chamber are aerated and stirred, and the temperature is adjusted at the same time. The dust phenomenon is suppressed under the action of the dustproof net, and the excess gas in the mixing chamber enters the guide mechanism from the connecting air pipe;

[0025] S2. The gas passes through the mixing chamber and the outer protective layer in a spiral shape under the guidance of the spiral guide plate. The excess heat of the gas can keep the surface of the mixing chamber warm. At the same time, the paddle plate is pushed open under the action of air pressure, and finally the gas is discharged;

[0026] S3. The actuator of the electric cylinder on one side of the pressure dividing chamber drives the swing frame to swing inside the pressure dividing chamber, driving the baffle plate to fit with the port of the aeration pipe. When fitting, the gas cannot enter from the port, and the ventilation operation of the other four groups of aeration pipes is realized instead. The two groups of actuator electric cylinders are reciprocated to realize the separate control of the aeration pipes at the bottom of the mixing chamber, changing the actual aeration direction, thereby improving the aeration mixing effect;

[0027] S4. When discharging is required, close the connecting air pipe. The gas pressure introduced into the mixing chamber through the aeration pipe can help the mortar to be discharged from the discharge port. When cleaning is required, high-frequency ventilation is performed to the inside of the mixing chamber through the high-pressure thermal fan and the stirring direction adjustment mechanism. After the gas enters the mixing chamber from the aeration pipe port, it can be blown directly to the inner wall of the mixing chamber. At the same time, the high-frequency air pressure entering the inner side of the outer protective layer through the connecting air pipe can reopen the paddle plate. The reset spring drives the paddle plate to reset under the elastic action, so that the rubber column can hit the outer wall of the mixing chamber, which is helpful for cleaning the residual mortar.

[0028] The beneficial effects of the present invention are:

[0029] The mortar of the present invention is suitable for a variety of industrial and commercial floors, has high physical properties and decorative properties, and utilizes the ball effect of spherical special aggregates and the dispersing and retarding effect of sodium polyacrylate to prepare low-shrinkage and high-strength decorative surface mortar with better physical properties, stronger decorative properties and faster construction, thereby obtaining a high-value-added and multi-purpose inorganic floor material. At the same time, since the spherical special aggregates, sodium polyacrylate, mineral powder and silica fume are all solid waste recycling products, new ways of solid waste utilization can be expanded, and the amount of natural sand and cementitious materials used can be saved, which complies with the national green circular economy policy and is expected to achieve significant economic and social benefits.

[0030] The mortar mixing unit of the present invention can meet the aeration and mixing operation in multiple directions, thereby improving the mixing effect of the mortar inside the mixing chamber. At the same time, by connecting an external high-pressure thermal fan, temperature control is achieved during aeration and mixing, meeting the mixing work in a low-temperature environment.

[0031] The present invention arranges an outer protective layer on the outside of the mixing chamber, so that the hot gas inside the mixing chamber can directly flow to the inside after aeration and stirring, and under the guidance of the guide mechanism, it evenly contacts the outer wall of the mixing chamber, thereby providing a heat preservation operation for the mixing chamber, further controlling the temperature, saving energy and protecting the environment, and having a high heat utilization rate;

[0032] The present invention provides a guide mechanism, which can not only provide wind guidance, but also control the ventilation frequency of the high-pressure thermal fan to push the paddle plate to rotate, and realize reciprocating motion under the action of the return spring, thereby performing a high-frequency knocking operation on the outer wall of the mixing chamber, thereby facilitating the cleaning of residual mortar on the outer wall of the mixing chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0034] Figure 1 This is a schematic diagram of the overall structure of the device for preparing low-shrinkage and high-strength decorative surface mortar for flooring proposed by the present invention;

[0035] Figure 2 This is a schematic diagram of the half-section structure of the device for preparing low-shrinkage and high-strength decorative surface mortar for floor proposed by the present invention.

[0036] Figure 3 This is a schematic diagram of the aeration pipe connection structure of the low-shrinkage and high-strength decorative surface mortar preparation device for floor proposed by the present invention.

[0037] Figure 4 This is a schematic diagram of the spiral guide plate structure of the device for preparing low-shrinkage and high-strength decorative surface mortar for floors proposed by the present invention.

[0038] Figure 5 The invention provides a low-shrinkage and high-strength decorative surface mortar preparation device for the floor Figure 3 A magnified schematic diagram of the structure at point A.

[0039] Figure 6 The invention provides a low-shrinkage and high-strength decorative surface mortar preparation device for the floor Figure 4 Enlarged schematic diagram of the structure at point B.

[0040] In the figure: 1. Mixing unit; 2. Base; 3. High-pressure thermal fan; 4. Stirring direction adjustment mechanism; 5. Connecting air pipe; 6. Guide mechanism;

[0041] 11. Mixing chamber; 12. Top end cover; 13. Discharge port; 14. Outer protective layer; 15. Dust screen; 41. Aeration pipe; 42. Pressure dividing chamber; 43. Actuating cylinder; 44. Swinging frame; 45. Blocking plate; 46. Slide; 47. Connecting slide pin; 61. Spiral guide plate; 62. Boss; 63. Vibration assembly;

[0042] 631, paddle plate; 632, rubber column; 633, return spring. DETAILED DESCRIPTION

[0043] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0044] The low-shrinkage and high-strength decorative surface mortar for floor comprises a mortar body composed of silicate cement, aluminate cement, high-belite cement, mineral powder, silica fume, gypsum, spherical special aggregate, natural aggregate, heavy calcium powder and admixture, and the mass percentage of each component is: silicate cement: 7.0-9.0%, aluminate cement: 9.5-12.5%, high-belite cement: 6.0-8.0%, mineral powder: 4.5-7.0%, silica fume: 0.5-1.0%, gypsum: 4.5-8.5%, spherical special aggregate: 28.5-33.5%, natural aggregate: 15.5-20.5%, heavy calcium powder: 12.0-16.0%, admixture 2.2-3.8%, the sum of the components is 100%, and the amount of water added is 18.5%-19.5% of the total mass of the mortar.

[0045] The strength grade of the silicate cement is PⅠ52.5 silicate cement, the model of the aluminate cement is CA-50, the gypsum is hard gypsum, that is, anhydrous calcium sulfate (CaSO4), the mesh range of the spherical special aggregate is 35-100 mesh, the sphericity and roundness are both greater than 0.85, the natural aggregate is washed and dried river sand, the mesh range is 40-120 mesh, and the heavy calcium powder is 400 mesh.

[0046] The admixture comprises a high-efficiency water reducing agent, a redispersible latex powder, a water retaining agent, a viscosity stabilizer, a defoaming agent, a bubble inhibitor, a retarder, an early strength agent, a dispersing wetting agent and sodium polyacrylate, and the admixture amounts thereof are respectively as follows: the high-efficiency water reducing agent accounts for 0.13%-0.25% of the total amount; the redispersible latex powder accounts for 1.5%-2.5% of the total amount; the water retaining agent accounts for 0.05%-0.07% of the total amount; the viscosity stabilizer accounts for 0.01%-0.03% of the total amount; the defoaming agent accounts for 0.1%-0.15% of the total amount; the bubble inhibitor accounts for 0.05%-0.10% of the total amount, the retarder accounts for 0.04%-0.15% of the total amount; the early strength agent accounts for 0.05%-0.1% of the total amount; the dispersing wetting agent accounts for 0.12%-0.23% of the total amount, and the dispersing retarder accounts for 0.15%-0.22% of the total amount.

[0047] The high-efficiency water reducer is a polycarboxylate water reducer; the redispersible latex powder is a copolymer of 1 to 5 substances selected from acrylate, vinyl acetate, versatate and ethylene; the water retaining agent is a water-soluble hydroxyethyl cellulose ether or hydroxypropyl methyl cellulose ether powder; the viscosity stabilizer is a polymer stabilizer containing an inorganic anti-caking agent; the defoaming agent is a mixture of 1 to 5 substances selected from polyols, polysiloxane compounds and non-crystalline silica; the bubble inhibitor is a mixture of fatty alcohols and silicone; the retarder is 2,3-dihydroxysuccinic acid and sodium citrate and a mixture of the two; the early strength agent is lithium sulfate or lithium carbonate powder; the dispersing wetting agent is a sulfonated naphthalene powder; and the dispersing retarder is a sodium polyacrylate powder with a molecular weight of 1000.

[0048] Embodiment 1:

[0049]

[0050]

[0051] After preparing the low shrinkage and high strength decorative surface mortar according to the mass percentage specified above, add mixing water accounting for 19.5% of the total mass of the mortar, stir at high speed for not less than 2 minutes before construction (add water first and then mortar), and measure various properties after curing to the specified age.

[0052] Embodiment 2:

[0053]

[0054]

[0055] After preparing the low shrinkage and high strength decorative surface mortar according to the mass percentage specified above, add mixing water accounting for 19.0% of the total mass of the mortar, stir at high speed for not less than 2 minutes before construction (add water first and then mortar), and measure various properties after curing to the specified age.

[0056] Embodiment 3:

[0057]

[0058]

[0059] After preparing the low shrinkage and high strength decorative surface mortar according to the mass percentage specified above, add mixing water accounting for 18.5% of the total mass of the mortar, stir at high speed for not less than 2 minutes and then construct (add water first and then mortar), and measure various properties after curing to the specified age.

[0060] In the preparation process of the embodiment: first, water reducing agent, sodium citrate, tartaric acid, lithium sulfate or lithium carbonate, cellulose ether, viscosity stabilizer, defoamer, bubble inhibitor, dispersing wetting agent, sodium polyacrylate and latex powder are put into a high-speed dispersant in proportion and mixed evenly to form an additive masterbatch; then, spherical special aggregate, natural aggregate, silicate cement, aluminate cement, additive masterbatch, heavy calcium powder, anhydrite, high belite cement, mineral powder, and silica fume are put into the starting mixer in sequence in proportion, the stirring time is not less than 15 minutes, and after stirring evenly to form mortar, it is stirred at high speed with tap water to mix evenly.

[0061] The various properties of the low shrinkage and high strength decorative surface mortar in Examples 1-3 were tested and analyzed, and the results are shown in the following table.

[0062] The reference standard for the test method is: JC / T 985-2017 "Cement-based self-leveling mortar for floors".

[0063]

[0064]

[0065] Experimental conclusion: The present invention provides a low-shrinkage and high-strength decorative surface mortar for floor and a preparation method thereof. For the first time, spherical special aggregate is used to replace machine-made sand, high-belite cement, mineral powder and silica fume are used to replace part of the cementitious material, and a variety of new additives such as sodium polyacrylate, viscosity stabilizer and bubble inhibitor are added to prepare high-performance and highly decorative low-shrinkage and high-strength decorative surface mortar. All indicators meet the industry standard JC / T 985-2017 "Cement-based self-leveling mortar for floor". It is an excellent thin-layer fast-construction floor material suitable for new floor and renovation and transformation floor projects, as well as floor projects requiring ultra-high bearing capacity and high decoration requirements. The ground constructed with this material can be put into use directly, and can also be used in combination with a variety of surface treatment materials such as waxing, dyeing, crystallization polishing, sealing and curing, and color covering. It has the characteristics of low water-to-material ratio, low shrinkage rate, high strength, high fluidity, early strength, high decorativeness, etc.

[0066] Preparation device for low shrinkage and high strength decorative surface mortar for floor:

[0067] refer to Figure 1 and Figure 2 , including a mixing unit 1, the mixing unit 1 includes a mixing chamber 11 and a top end cover 12 sealed above the mixing chamber 11, the mixing chamber 11 is fixed above the base 2, the bottom of the top end cover 12 is fixedly connected to a dustproof net 15, the bottom of the mixing chamber 11 is connected to a discharge port 13 through a valve, the outer surface of the mixing chamber 11 is fixedly connected to an outer protective layer 14, and the outer protective layer 14 and the opposite side of the mixing chamber 11 are fixedly connected to a guide mechanism 6; a spiral guide plate 61, the spiral guide plate 61 is fixed between the mixing chamber 11 and the outer protective layer 14, the spiral guide plate 61 is spiral, and the upper side of one side of the outer protective layer 14 is connected to the upper side of the mixing chamber 11 through a connecting air pipe 5; eight groups of aeration pipes 41, the eight groups of aeration pipes 41 are connected to the bottom of the mixing chamber 11 and are of different lengths, and the eight groups of aeration pipes 41 are distributed in a ring array with respect to the surface of the mixing chamber 11, and the eight groups of aeration pipes 41 are respectively connected to the high-pressure thermal fan 3 through a baffle plate 45, and the high-pressure thermal fan 3 is fixed on the base 2.

[0068] In the present embodiment, eight groups of aeration pipes 41 are directly connected to the bottom of the mixing chamber 11, and aeration operation is provided at the bottom of the inner surface of the mixing chamber 11 to achieve a basic stirring effect. The aeration stirring method also has the effect of reducing the difficulty of cleaning. The aeration of the aeration pipes 41 is controlled separately under the blocking of the baffle plate 45, so that the aeration direction below the inner surface of the mixing chamber 11 can be changed, thereby improving the stirring efficiency. Excess hot gas enters the surface of the spiral guide plate 61 on the inner side of the outer protective layer 14 from the connecting air pipe 5, and moves downward under the guidance of the spiral guide plate 61, and fully contacts the surface of the mixing chamber 11 to achieve secondary insulation operation. The whole is suitable for use in a relatively low temperature environment.

[0069] refer to Figure 3 and Figure 5 A stirring direction adjusting mechanism 4 is provided at the bottom of the mixing chamber 11, and the stirring direction adjusting mechanism 4 includes eight groups of aeration pipes 41 and a pressure dividing chamber 42 fixed to the base 2. The eight groups of aeration pipes 41 are connected to one side of the pressure dividing chamber 42, and the lower part of the pressure dividing chamber 42 is connected to the air outlet of the high-pressure thermal fan 3 through a connecting pipe. Two groups of actuating electric cylinders 43 are fixed to the other side of the pressure dividing chamber 42, and the two groups of actuating electric cylinders 43 are movably connected to the swing frame 44 inside the pressure dividing chamber 42 through connecting sliding pins 47 respectively. A sliding groove 46 is provided on the surface of the swing frame 44, and the connecting sliding pin 47 is slidably connected to the sliding groove 46. One side of the swing frame 44 is rotatably connected to the pressure dividing chamber 42 through an axial rod, and the other side of the swing frame 44 is movably connected to the blocking plate 45 through a pin seat, and the blocking plate 45 is aligned with the port of the aeration pipe 41.

[0070] In the present embodiment, the driving of the electric cylinder 43 can drive the connecting slide pin 47 to move laterally inside the pressure dividing chamber 42, and the connecting slide pin 47 slides and limits with the slide groove 46 on the inner side of the swing frame 44, so that the connecting slide pin 47 can drive the swing frame 44 to swing during the movement, so that the swing frame 44 drives the baffle plate 45 to fit with the port of the aeration pipe 41. At this time, the gas inside the pressure dividing chamber 42 cannot enter the aeration pipe 41 from this point, which changes the actual ventilation effect of the aeration pipe 41, so that the aeration direction inside the mixing chamber 11 changes, thereby improving the actual aeration stirring direction and aeration stirring effect.

[0071] refer to Figure 2 , Figure 4 and Figure 6 The guide mechanism 6 includes a spiral guide plate 61 and six groups of bosses 62. The six groups of bosses 62 are fixed on the surface of the spiral guide plate 61, and the distribution angle between the bosses 62 is 180 degrees. A vibration assembly 63 is arranged between two adjacent groups of bosses 62. The vibration assembly 63 includes a paddle plate 631 and a return spring 633. The paddle plate 631 is elastically connected to the inner surface of the outer protective layer 14 through the return spring 633. A rubber column 632 is arranged on one side of the paddle plate 631. The rubber column 632 is in contact with the outer surface of the mixing chamber 11. One side of the paddle plate 631 moves on the inner surface of the outer protective layer 14 through a rotating shaft.

[0072] In the present embodiment, after aeration and stirring inside the mixing chamber 11, excess gas passes through the dustproof net 15 under the action of air pressure and then enters the guide mechanism 6 on the inner side of the outer protective layer 14 from the connecting air pipe 5. At this time, the gas moves downward in a spiral shape under the guidance of the spiral guide plate 61, passes through the surface of the mixing chamber 11 to reutilize the temperature of the mixing chamber 11, and realizes the heat preservation operation, so that the mortar mixing is suitable for use in a low temperature environment. The gas opens the vibration component 63 on the surface of the boss 62. When it is necessary to clean the inside of the mixing chamber 11, it is only necessary to control the ventilation frequency of the high-pressure thermal fan 3 so that the paddle plate 631 cooperates with the rubber column 632 to swing back and forth, and then the return spring 633 is used to realize reciprocating knocking, which helps to shake off the residual mortar on the inner wall of the mixing chamber 11, thereby achieving a better cleaning effect. During normal operation, the continuous air pressure can open the paddle plate 631 to achieve normal aeration and stirring.

[0073] The preparation method of the low shrinkage and high strength decorative surface mortar preparation device for floor, the specific steps are as follows:

[0074] S1, various mortar raw materials and water directly enter the bottom of the mixing chamber 11 from the feed port above the top end cover 12 to achieve accumulation, then close the feed port above the top end cover 12, and the high-pressure thermal blower 3 fixed above the base 2 works, by passing high-pressure temperature gas into the pressure chamber 42, at this time, the gas enters the aeration pipe 41, and enters the bottom of the mixing chamber 11 at the port on the other side of the aeration pipe 41, aerating and stirring the raw materials in the mixing chamber 11 while achieving temperature regulation, and suppressing dust under the action of the dustproof net 15, and the excess gas in the mixing chamber 11 enters the guide mechanism 6 from the connecting air pipe 5;

[0075] S2, the gas passes through the mixing chamber 11 and the outer protective layer 14 in a spiral shape under the guidance of the spiral guide plate 61, and the excess heat of the gas can keep the surface of the mixing chamber 11 warm. At the same time, the paddle plate 631 is pushed open by the air pressure, and finally the gas is discharged;

[0076] S3, the actuator 43 on one side of the pressure dividing chamber 42 drives the swing frame 44 to swing inside the pressure dividing chamber 42, driving the baffle plate 45 to fit with the port of the aeration pipe 41. When fitting, the gas cannot enter from the port, and the ventilation operation of the other four groups of aeration pipes 41 is realized instead. The two groups of actuator cylinders 43 are reciprocated to realize the separate control of the aeration pipes 41 at the lower part of the mixing chamber 11, and the actual aeration direction is changed, thereby improving the aeration and stirring effect;

[0077] S4. When discharging is required, the connecting air pipe 5 is closed. The gas pressure introduced into the mixing chamber 11 by the aeration pipe 41 can help the mortar to be discharged from the discharge port 13. When cleaning is required, high-frequency ventilation operation is performed into the mixing chamber 11 through the high-pressure thermal fan 3 and the stirring direction adjustment mechanism 4. After the gas enters the mixing chamber 11 from the port of the aeration pipe 41, it can be directly blown to the inner wall of the mixing chamber 11. At the same time, the high-frequency air pressure entering the inner side of the outer protective layer 14 through the connecting air pipe 5 can reopen the paddle plate 631. The reset spring 633 drives the paddle plate 631 to reset under the elastic action, so that the rubber column 632 can hit the outer wall of the mixing chamber 11, which is helpful for cleaning the residual mortar.

[0078] Working principle: First, water and mortar raw materials are added into the mixing chamber 11 from the top end cover 12. When the amount is sufficient, the feed port above the top end cover 12 is closed. Then, the high-pressure thermal fan 3 on the surface of the base 2 is driven to rush the hot gas into the pressure chamber 42 in the stirring direction adjustment mechanism 4. The gas enters the mixing chamber 11 from the aeration pipe 41 inside the pressure chamber 42, and the raw materials in the mixing chamber 11 are aerated and stirred. The connecting slide pin 4 is driven by the actuator electric cylinder 43. 7 then moves inside the pressure dividing chamber 42, and the connecting slide pin 47 drives the swing frame 44 to swing through the slide groove 46 provided on the surface of the swing frame 44, so as to close or open the port of the aeration pipe 41 of the baffle plate 45, so as to realize different directions of gas, thus changing the direction of aeration and stirring inside the mixing chamber 11, improving the stirring effect, and after the hot gas fully contacts with the raw materials, it passes through the dustproof net 15 under the top end cover 12 to realize dustproof filtration, and then enters the mixing chamber 11 and the opposite side of the outer protective layer 14 through the connecting air pipe 5, and then under the guidance of the spiral guide plate 61 in the guiding mechanism 6, the gas spirally descends and contacts the outer surface of the mixing chamber 11 to realize secondary heat preservation, and then the gas is discharged, and finally the valve of the discharge port 13 is opened, and the valve at the connecting air pipe 5 is closed at the same time. The aeration effect of the aeration pipe 41 into the mixing chamber 11 is conducive to the unloading operation. When it is necessary to clean the inner surface of the mixing chamber 11, the aeration pipe 41 first fills the mixing chamber 11 with gas, and the gas blows the inner wall of the mixing chamber 11 along with the stirring chamber 11. After entering the position of the spiral guide plate 61, the boss 62 fixed on the surface of the spiral guide plate 61 can provide active support for the vibration component 63, and the air pressure pushes open the paddle plate 631, which is reset under the elastic action of the reset spring 633. In this way, the reciprocating movement of the paddle plate 631 can be achieved by controlling the air supply frequency of the high-pressure thermal fan 3, so that the rubber column 632 knocks on the outer wall of the mixing chamber 11, thereby assisting the cleaning operation, so that the mortar agglomerated on the inner wall of the mixing chamber 11 can fall off smoothly, thereby achieving the cleaning effect.

[0079] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A preparation device for low shrinkage and high strength decorative surface mortar for floor, characterized in that: The stirring unit (1) comprises a stirring chamber (11) and a top end cover (12) sealed above the stirring chamber (11), the stirring chamber (11) being fixed above a base (2), a dust screen (15) being fixedly connected below the top end cover (12), a discharge port (13) being connected below the stirring chamber (11) via a valve, an outer protective layer (14) being fixedly connected to the outer surface of the stirring chamber (11), and a guide mechanism (6) being fixedly connected to the opposite side of the outer protective layer (14) and the stirring chamber (11); A spiral guide plate (61), the spiral guide plate (61) being fixed between the stirring chamber (11) and the outer protective layer (14), the spiral guide plate (61) being spiral-shaped, and the upper part of one side of the outer protective layer (14) being connected to the upper part of the stirring chamber (11) via a connecting air pipe (5); Eight groups of aeration pipes (41), the eight groups of aeration pipes (41) being connected to the bottom of the stirring chamber (11) and having different lengths, and the eight groups of aeration pipes (41) being distributed in a circular array with respect to the surface of the stirring chamber (11), the eight groups of aeration pipes (41) being connected to the high-pressure thermal blower (3) respectively through the baffle plate (45), and the high-pressure thermal blower (3) being fixed on the base (2); A stirring direction adjustment mechanism (4) is provided at the bottom of the stirring chamber (11), and the stirring direction adjustment mechanism (4) comprises eight groups of aeration pipes (41) and a pressure dividing chamber (42) fixed to the base (2), the eight groups of aeration pipes (41) are connected to one side of the pressure dividing chamber (42), the bottom of the pressure dividing chamber (42) is connected to the air outlet of the high-pressure thermal fan (3) through a connecting pipe, and two groups of actuating electric cylinders (43) are fixed to the other side of the pressure dividing chamber (42), and the two groups of actuating electric cylinders (43) are connected to the air outlet of the high-pressure thermal fan (3). ) are movably connected to a swing frame (44) inside the pressure dividing chamber (42) through a connecting slide pin (47), a slide groove (46) is provided on the surface of the swing frame (44), the connecting slide pin (47) is slidably connected to the slide groove (46), one side of the swing frame (44) is rotatably connected to the pressure dividing chamber (42) through an axial rod, and the other side of the swing frame (44) is movably connected to a baffle plate (45) through a pin seat, and the baffle plate (45) is aligned with the port of the aeration pipe (41).

2. The device for preparing low-shrinkage and high-strength decorative surface mortar for flooring according to claim 1, characterized in that: The guide mechanism (6) comprises a spiral guide plate (61) and six groups of bosses (62). The six groups of bosses (62) are fixed on the surface of the spiral guide plate (61), and the distribution angle between the bosses (62) is 180 degrees. A vibration assembly (63) is provided between two adjacent groups of bosses (62) above and below.

3. The device for preparing low-shrinkage and high-strength decorative surface mortar for flooring according to claim 2, characterized in that: The vibration assembly (63) comprises a paddle plate (631) and a return spring (633); the paddle plate (631) is elastically connected to the inner surface of the outer protective layer (14) via the return spring (633); a rubber column (632) is provided on one side of the paddle plate (631); the rubber column (632) is in contact with the outer surface of the stirring chamber (11); and one side of the paddle plate (631) moves on the inner surface of the outer protective layer (14) via a rotating shaft.

4. A method for using a device for preparing a low-shrinkage and high-strength decorative surface mortar for flooring according to any one of claims 1 to 3, characterized in that: The specific steps are as follows: S1, various mortar raw materials and water directly enter the bottom of the mixing chamber (11) from the feed port above the top end cover (12) to be accumulated, then the feed port above the top end cover (12) is closed, and the high-pressure thermal fan (3) fixed above the base (2) works, and high-pressure temperature gas is introduced into the pressure-dividing chamber (42). At this time, the gas enters the aeration pipe (41), and enters the bottom of the mixing chamber (11) at the port on the other side of the aeration pipe (41), aerating and stirring the raw materials in the mixing chamber (11) while adjusting the temperature. The dust-raising phenomenon is suppressed under the action of the dust-proof net (15), and the excess gas in the mixing chamber (11) enters the guide mechanism (6) from the connecting air pipe (5); S2, the gas passes in a spiral shape between the stirring chamber (11) and the outer protective layer (14) under the guidance of the spiral guide plate (61), and the excess heat of the gas can keep the surface of the stirring chamber (11) warm, while at the same time, the paddle plate (631) is pushed open under the action of the gas pressure, and finally the gas is discharged; S3, the actuator cylinder (43) on one side of the pressure dividing chamber (42) is driven to drive the swing frame (44) to swing inside the pressure dividing chamber (42), driving the baffle plate (45) to fit with the port of the aeration pipe (41). When fitting, gas cannot enter from the port, and ventilation operation of the other four groups of aeration pipes (41) is realized instead. The two groups of actuator cylinders (43) are reciprocated to realize the separate control of the aeration pipes (41) at the lower part of the stirring chamber (11), thereby changing the actual aeration direction, thereby improving the aeration and stirring effect; S4. When discharge is required, the connecting air pipe (5) is closed. The gas pressure introduced into the mixing chamber (11) through the aeration pipe (41) can help the mortar to be discharged from the discharge port (13). When cleaning is required, high-frequency ventilation is performed into the mixing chamber (11) through the high-pressure thermal fan (3) and the stirring direction adjustment mechanism (4). After the gas enters the mixing chamber (11) from the port of the aeration pipe (41), it can be directly blown toward the inner wall of the mixing chamber (11). At the same time, the high-frequency air pressure entering the inner side of the outer protective layer (14) through the connecting air pipe (5) can reopen the paddle plate (631). The reset spring (633) drives the paddle plate (631) to reset under the elastic action, so that the rubber column (632) can hit the outer wall of the mixing chamber (11), which helps the cleaning operation of the residual mortar.

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