Equipment for preparing hollow microspheres

Abstract

The utility model discloses equipment for preparing hollow microspheres. The equipment comprises a high-temperature kiln, an air blower, a power supply, an electric wire and a circulating pipeline, a heat preservation and insulation layer and a material containing fine mesh layer are sequentially arranged on the lower portion in the high-temperature kiln, and the size and the shape are consistent with those of the transverse section in the high-temperature kiln; the side, making contact with the high-temperature kiln, of the heat preservation and insulation layer is connected with a heat preservation and insulation layer twitching switch, the side, making contact with the containing fine net layer, of the high-temperature kiln is provided with a feeding port and connected with a containing port switch, and a sealing ring is arranged in the other side of the high-temperature kiln. The bottom air inlet of the high-temperature kiln is connected with the upper part of the air blower; the lower part of the air blower is connected with the air inlet pipe and the high-temperature kiln air outlet through circulating pipelines; the power source is connected with the high-temperature kiln and the air blower through electric wires. When the equipment disclosed by the utility model is used for preparing the hollow microspheres, the agglomeration of material particles can be avoided, meanwhile, the use of a dispersing agent is avoided, and finally the hollow microspheres with stable structure and excellent performance are prepared.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of new material preparation, concretely relates to a kind of equipment for preparing hollow microsphere. BACKGROUND

[0002] Concrete crystal nucleus early strength agent has good promotion effect on the early strength of concrete, but due to its nano structure, it is easy to agglomerate, and agglomeration will lead to significant reduction in its early strength effect, so it is often necessary to prepare it into a suspension, add a dispersing agent to the suspension to disperse the crystal nucleus particles and prevent agglomeration, but this technical means requires the addition of a surfactant or dispersing agent, which can easily cause air entrainment, leading to the phenomenon of water bleeding and an increase in harmful bubbles in the concrete. Hollow microspheres have a special hollow pore structure, so the material itself has a low density, a large specific surface area, a large specific strength and good thermal damping performance. The use of hollow structures that can participate in the concrete reaction is beneficial to the dispersion of crystal nucleus early strength agent particles, relies on the hollow structure to achieve dispersion between different crystal nucleus particles, and is beneficial to improving workability and reducing water bleeding rate. The current preparation process of hollow microspheres easily causes uneven dispersion of material particles, causing particle agglomeration and other problems, so there is an urgent need to design a new type of hollow microsphere preparation equipment. SUMMARY

[0003] In view of the problems in the above background art, the utility model provides a kind of equipment for preparing hollow microsphere, especially the preparation of hollow microsphere for crystal nucleus early strength agent, when preparing hollow microsphere by the equipment, material particle agglomeration, low production efficiency and other problems can be avoided.

[0004] To achieve the above purpose, the utility model provides the following technical scheme:

[0005] A kind of equipment for preparing hollow microsphere, including high temperature kiln, air blower, power supply, electric wire and circulating pipeline;

[0006] The high temperature kiln is provided with an air outlet above, and an air inlet at the bottom, and a heat-insulating layer and a material-holding fine mesh layer are sequentially arranged in the lower part of the furnace, and the size and shape of the heat-insulating layer and the material-holding fine mesh layer are consistent with the horizontal cross section of the interior of the high temperature kiln;

[0007] The distance between the heat-insulating layer and the material-holding fine mesh layer is 5-10 cm, and the distance between the material-holding fine mesh layer and the air inlet at the bottom of the high temperature kiln is controlled to be 3-5 cm;

[0008] The side of the heat-insulating layer in contact with the high temperature kiln is connected with a heat-insulating layer extraction switch, and the heat-insulating layer extraction switch is arranged outside the high temperature kiln. When the equipment is in use, the heat-insulating layer is opened by the heat-insulating layer extraction switch, so that the material floating in the air is quickly blown into the high temperature furnace, and the reaction temperature of the material in the high temperature furnace is ensured.

[0009] The high-temperature kiln is provided with an inlet on the side in contact with the material-containing fine mesh layer, and a sealing ring is arranged inside the other side; the material-containing fine mesh layer is connected with the material inlet switch of the high-temperature kiln through the inlet; the inlet of the device is provided with a sealing device to prevent gas overflow.

[0010] The gas outlet is provided with an intercepting net to prevent the hollow microspheres from being blown out of the high-temperature kiln; the mesh aperture of the intercepting net is smaller than the particle size of the hollow microspheres, and the aperture is not greater than 0.01 mm.

[0011] The bottom gas inlet of the high-temperature kiln is connected with the upper part of the air blower through a pipeline; the lower part of the air blower is connected with the gas inlet pipe and the gas outlet of the high-temperature kiln through a circulating pipeline.

[0012] The power supply is connected with the high-temperature kiln and the air blower through wires to control the reaction temperature of the material in the high-temperature kiln and the air blowing of the air blower.

[0013] Further, the sealing ring is arranged between the high-temperature kiln and the material-containing fine mesh layer inside the high-temperature kiln, and closely adheres to the inside of the high-temperature kiln; the material-containing fine mesh layer has a size corresponding to the inside of the high-temperature kiln, and can fill the inside space of the kiln.

[0014] Further, the material inlet switch and the sealing ring are both arc-shaped.

[0015] Further, the high-temperature kiln is an electric heating furnace.

[0016] The high-temperature kiln in the preparation device is a closed space; when in use, the material-containing fine mesh layer is completely pulled out of the inlet through the material inlet switch; at this time, the sealing ring is pulled outwards to block the inlet, to prevent the gas in the high-temperature kiln under different atmosphere conditions from overflowing, and to avoid contact with the external gas; then the crystal nucleus strengthening agent and other materials at the inlet are granulated and uniformly laid on the material-containing fine mesh layer; the air blower below blows the crystal nucleus material particles on the material-containing fine mesh layer to float in the air by using the gas at the gas inlet; then the air switch is opened by pulling the heat insulation layer, the material floating in the air is quickly blown into the high-temperature kiln, and the material is blown into the high-temperature kiln for hollow microsphere preparation; meanwhile, the intercepting net is arranged in the gas outlet to prevent the material from being blown out of the gas outlet.

[0017] Compared with the prior art, the device has the following beneficial effects:

[0018] The device controls the temperature in the high-temperature kiln to be higher than the melting temperature of the low-melting-point material based on the melting point of the material, realizes the wrapping of the material particles, avoids the agglomeration of the material particles, and avoids the use of dispersants, so that the hollow microspheres with stable structure and excellent performance are finally prepared. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 The device structure schematic view of the utility model.

[0020] Fig. 2 The device structure schematic view of the utility model.

[0021] Figs. 1-2 Each mark is: 1 high temperature kiln, 2 sealing ring, 3 material holding fine mesh layer, 4 material holding opening switch, 5 electric wire, 6 air blower, 7 air inlet pipe, 8 power supply, 9 circulating pipeline, 10 air inlet, 11 heat insulation layer pull-out switch, 12 heat insulation layer, 13 intercepting net, 14 air outlet. DETAILED DESCRIPTION

[0022] In order to better understand and implement, the utility model is explained in detail below in conjunction with the drawings.

[0023] A kind of equipment for preparing hollow microsphere, including high temperature kiln 1, air blower 6, power supply 8, electric wire 5 and circulating pipeline 9;

[0024] The high temperature kiln 1 top is equipped with air outlet 14, bottom is equipped with air inlet 10, furnace lower side is equipped with heat insulation layer 12 and material holding fine mesh layer 3 in sequence, the size shape of heat insulation layer 12 and material holding fine mesh layer 3 is consistent with high temperature kiln internal transverse section;

[0025] The spacing between heat insulation layer and material holding fine mesh layer is 5-10cm, and the spacing between material holding fine mesh layer and air inlet at the bottom of high temperature kiln is controlled to be 3-5cm.

[0026] The side of heat insulation layer 12 contacting with high temperature kiln 1 is connected with heat insulation layer pull-out switch 11, and the heat insulation layer pull-out switch 11 is placed outside high temperature kiln, when the equipment is used, heat insulation layer is opened by heat insulation layer pull-out switch 11, so that material floating in the air is quickly blown into high temperature furnace, and the reaction temperature of material in high temperature furnace is ensured.

[0027] The side of high temperature kiln 1 contacting with material holding fine mesh layer 3 is equipped with material inlet, and the other side is equipped with sealing ring 2 inside, and material holding fine mesh layer 3 is connected with material holding opening switch 4 equipped on high temperature kiln through material inlet, and the material inlet of the equipment is closed device, to avoid gas overflow.

[0028] Intercepting net 13 is arranged at air outlet 14, to avoid hollow microsphere from being blown out of high temperature kiln from air outlet, and the mesh aperture of the intercepting net is less than the particle size of hollow microsphere, and the mesh aperture is not more than 0.01mm.

[0029] The air inlet pipe 7 and high temperature kiln air outlet 14 are connected by circulating pipeline 9 respectively through circulating pipeline 9 below air blower, and the air inlet pipe 7 and high temperature kiln air outlet 14 are connected by circulating pipeline 9 respectively through circulating pipeline 9 below air blower.

[0030] The power supply 8 is connected with the high-temperature kiln 1 and the air blower 6 through the electric wire 5 respectively, and is used for controlling the reaction temperature of the materials in the high-temperature kiln and the blowing of the air blower.

[0031] Further, the sealing ring is arranged between the material containing fine mesh layer and the inside of the high-temperature kiln, and closely adheres to the inside of the high-temperature kiln; the material containing fine mesh layer has a size corresponding to the inside of the high-temperature kiln, and can fill the inside space of the kiln.

[0032] Further, the material containing opening switch and the sealing ring are both arc-shaped.

[0033] Further, the high-temperature kiln adopts an electric heating furnace.

[0034] When the equipment is used, first, the material containing fine mesh layer 3 at the feeding opening is completely pulled out through the material containing opening switch 4; at this time, the sealing ring 2 is pulled out outward to block the entrance, so as to avoid the overflow of the gas under different atmosphere conditions in the high-temperature kiln, and avoid the contact with the external gas; when the material containing opening switch 4 is closed, the sealing valve is inward, and the entrance sealing device is relied on to isolate the contact with the external gas, so as to ensure the internal gas environment.

[0035] After the crystal nucleus early strength agent at the feeding opening is granulated, the crystal nucleus material particles on the material containing fine mesh layer 3 are uniformly laid; the air blower 6 below utilizes the gas of the air inlet pipe 7 to blow the crystal nucleus material particles on the material containing fine mesh layer 3 to float in the air; then the heat insulation layer 12 is opened through the heat insulation layer on-off switch 11, the material floating in the air is quickly blown into the high-temperature kiln 1, the material is blown into the high-temperature kiln for microsphere preparation, and the air outlet 14 is internally provided with an intercepting net, so as to avoid the overflow of the material from the air outlet.

[0036] Embodiment

[0037] When the above equipment is applied to the preparation of calcium silicate crystal nucleus early strength agent, based on the high melting point of the calcium silicate crystal nucleus itself, after the calcium silicate crystal nucleus is mixed with other low-melting-point materials and part of organic matters to be granulated, the temperature in the high-temperature kiln is controlled to be higher than the melting temperature of the low-melting-point materials and lower than the melting temperature of the calcium silicate crystal nucleus, so that the calcium silicate crystal nucleus is wrapped with a layer of microsphere particles, the calcium silicate crystal nucleus is wrapped, the agglomeration of the calcium silicate crystal nucleus is avoided, the use of dispersing agent is avoided, and good dispersibility of the calcium silicate crystal nucleus is realized.

Claims

1. An apparatus for preparing hollow microspheres, characterized by comprising: It comprises a high-temperature kiln (1), a blower (6), a power supply (8), an electric wire (5) and a circulating pipeline (9). The high-temperature kiln (1) is provided with an air outlet (14) at the top and an air inlet (10) at the bottom, and a heat-insulating layer (12) and a material-containing fine mesh layer (3) are sequentially arranged in the kiln. The heat-insulating layer (12) is connected with a heat-insulating layer switch (11) at the side in contact with the high-temperature kiln (1), and the heat-insulating layer switch (11) is arranged outside the high-temperature kiln. The high-temperature kiln (1) is provided with a material inlet at the side in contact with the material-containing fine mesh layer (3), and a sealing ring (2) is arranged inside the other side of the high-temperature kiln. The material-containing fine mesh layer (3) is connected with a material inlet switch (4) arranged on the high-temperature kiln through the material inlet. The air outlet (14) is provided with an intercepting net (13) with a mesh size smaller than the particle size of the hollow microspheres. The air inlet (10) at the bottom of the high-temperature kiln (1) is connected with the upper part of the blower (6) through a pipeline, and the lower part of the blower (6) is connected with an air inlet pipe (7) and the air outlet of the high-temperature kiln (1) through a circulating pipeline (9).

2. The apparatus of claim 1, wherein, The power supply (8) is connected with the high-temperature kiln (1) and the blower (6) through the electric wire (5).

3. The apparatus of claim 2, wherein, The distance between the heat-insulating layer (12) and the material-containing fine mesh layer (3) is 5-10 cm, and the distance between the material-containing fine mesh layer (3) and the air inlet (10) at the bottom of the high-temperature kiln is controlled to be 3-5 cm.

4. The apparatus of claim 2 wherein, The mesh size of the intercepting net (13) is not greater than 0.01 mm.

5. The apparatus of claim 4 wherein, The sealing ring (2) is arranged between the material-containing fine mesh layer (3) and the inside of the high-temperature kiln (1) and closely contacts the inside of the high-temperature kiln.

6. The apparatus of claim 1 wherein, The material inlet switch (4) and the sealing ring (2) are both arc-shaped. The high-temperature kiln (1) is an electric heating furnace.

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