Spray drying device for producing 80-degree ultra-white light-transmitting ceramic rock plate

Abstract

The utility model discloses a spray drying device for producing 80-degree ultra-white transparent ceramic rock plates, which comprises a spray drying tower and a natural gas hot air supply device, and the air inlet end of the spray drying tower is only communicated with the natural gas hot air supply device through a hot air pipeline; the natural gas hot air supply device comprises a natural gas combustion furnace, an igniter and a natural gas conveying pipeline; the igniter is arranged at the bottom of the natural gas combustion furnace; the natural gas conveying pipeline is communicated with the bottom of the natural gas combustion furnace; and the inner walls of the spray drying tower, the hot air pipeline and the natural gas combustion furnace are made of stainless steel. In order to improve the sintering heat of the natural gas, the natural gas combustion furnace is designed to be of a vertical structure, the bottom serves as an ignition position, the combustion sufficiency of the natural gas is improved, the burnout degree of carbon particles can reach 98% or above, the heat efficiency reaches 95% or above, and the heat supply stability and the temperature uniformity are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to ceramic rock plate production technical field especially relates to a spray drying device for producing 80 degrees super white light transmission ceramic rock plate. BACKGROUND

[0002] As a new type of material, ceramic rock plate is more and more welcomed by the market in high-end ceramic products such as bathroom cabinets and bathroom background walls due to its high white jade texture and excellent physical properties, such as high temperature resistance, wear resistance, anti-permeability, acid and alkali resistance, etc. The cross-border application characteristics of rock plate make it not only suitable for traditional wall and floor decoration, but also can be used in cabinet countertops, lighting background walls and other fields.

[0003] At present, the common large-size white ceramic rock plate on the market has a body whiteness of less than 65 degrees, and occasionally a body whiteness of 70 degrees can be seen, such as the patent ZL202111203717.2 discloses a kind of jade fish belly white effect ceramic plate, although the body whiteness of the ceramic plate is greater than 75 degrees, but its light transmission is insufficient, the light transmission color is dispersed, the color tone is dark, and it cannot be applied in high-end large lighting background wall. Therefore, the applicant developed a super white light transmission ceramic rock plate with a body whiteness of up to 80 degrees, which improved one level in high whiteness (body whiteness ≥ 85 degrees), light transmission rate (light transmission rate ≥ 6.5%), and more delicate and warm texture, so that the light transmission of ceramic large plate and rock plate is more soft, warm and transparent under light, the light transmission color is uniform, the texture is more delicate, and it is more suitable for application in high-end large lighting background wall with certain lighting effect.

[0004] However, the heat energy required for drying in the existing ceramic equipment production line spray drying device, usually uses coal, fuel oil as fuel for sintering heat production, and then is conveyed into the spray drying device, however, during the combustion process of coal and fuel oil, a large amount of coal cinder and other solid suspended matter is produced, and then is conveyed into the spray drying device through the conveying pipeline, which pollutes the dry powder and cannot meet the requirements of body whiteness of body powder. Therefore, it is necessary to improve the device of the spray drying link to meet the production needs of super white light transmission ceramic rock plate with a body whiteness of up to 80 degrees. UTILITY MODEL CONTENTS

[0005] In order to overcome the shortcomings of the prior art, the purpose of the utility model is to provide a spray drying device for producing 80 degrees super white light transmission ceramic rock plate.

[0006] The purpose of the utility model is achieved by adopting the following technical scheme: a spray drying device for producing 80 degrees super white light transmission ceramic rock plate, comprising a spray drying tower and a natural gas heat supply device, the air inlet end of the spray drying tower is communicated with the natural gas heat supply device only through a hot air pipeline;

[0007] The natural gas heating air device comprises a natural gas combustion furnace, an igniter and a natural gas conveying pipeline; the igniter is arranged at the bottom of the natural gas combustion furnace, and the natural gas conveying pipeline is communicated with the bottom of the natural gas combustion furnace.

[0008] The inner wall material of the spray drying tower and the hot air pipeline is high-temperature-resistant stainless steel.

[0009] Optionally, the natural gas combustion furnace is a vertical natural gas combustion furnace, which has a cylindrical furnace cavity and an inverted conical furnace cavity located at the top of the cylindrical furnace cavity; a plurality of fire observation windows are arranged on the natural gas combustion furnace.

[0010] Optionally, the outer side of the hot air pipeline is covered with multiple layers of thermal insulation cotton.

[0011] Optionally, a plurality of spray pipes are arranged on the spray drying tower, each spray pipe is communicated with an external feed pipe, and a plurality of spray gun heads are arranged on each spray pipe.

[0012] Optionally, the plurality of spray gun heads are uniformly distributed on the spray pipe, and the nozzles of the spray guns are upwardly directed.

[0013] Optionally, the feed pipe is communicated with an external slurry tank, and a feeding pump is arranged on the feed pipe.

[0014] Optionally, an air extraction pipe is arranged on the spray drying tower, and the air extraction pipe is connected with a dust removal device.

[0015] Optionally, a cooling ring is arranged on the outer wall of the bottom of the spray drying tower, and an annular cooling cavity is arranged in the cooling ring.

[0016] Optionally, a discharge pipe is arranged at the bottom of the spray drying tower.

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

[0018] 1. In order to meet the production needs of the ultra-white light-transmitting ceramic rock plate product with a body whiteness of up to 80 degrees, the application improves the sintering structure, uses a natural gas combustion furnace instead of a combustion furnace using coal or oil as fuel, and uses the natural gas combustion furnace as the only fuel for sintering heat production, and improves the internal structure and material of the spray drying tower and the hot air pipeline, and adds a layer of high-temperature-resistant stainless steel, so that the inside of the spray drying tower is not polluted and no scab and debris are generated, and the production quality of the body whiteness of the product is improved.

[0019] 2. In order to improve the sintering heat of natural gas, the natural gas combustion furnace is designed to have a vertical structure, the bottom is used as the ignition position, the combustion fullness of the natural gas is improved, the carbon particle combustion degree can be up to more than 98%, the thermal efficiency can be up to more than 95%, and the stability and uniformity of the heat supply are improved.

[0020] 3. The application can improve the stability of heat supply and improve the powder drying effect of the spray drying device by setting multiple layers of thermal insulation cotton.

[0021] 4. The application can obtain the required powder particle size distribution for producing ceramic rock plates by designing multiple spray gun heads, spraying slurry upwards from the spray gun heads, and making the slurry into fine mist, thereby greatly reducing the powder loss rate and reducing the raw material loss cost.

[0022] 5. The powder obtained after the slurry is dried at high temperature is often too high in temperature, so a cooling ring and an annular cooling cavity are arranged on the outer wall of the bottom of the spray drying tower to reduce the powder temperature of the spray tower, avoid the condensation of high-temperature powder into water mist when it meets water molecules in the air, cause the powder to be humidified and caked during the conveying process, and be not conducive to the subsequent screening and storage of the powder, thereby affecting the quality of the powder pressing molding. BRIEF DESCRIPTION OF DRAWINGS

[0023] Fig. 1 is a structural schematic view of the spray drying tower of the preferred embodiment of the present application;

[0024] Fig. 2 is a partial structural schematic view of the natural gas combustion furnace of the preferred embodiment of the present application;

[0025] Fig. 3 is another partial structural schematic view of the natural gas combustion furnace of the preferred embodiment of the present application.

[0026] In the figure: 1, spray drying tower; 11, spray pipe; 12, spray gun head; 2, natural gas heat supply device; 21, natural gas combustion furnace; 211, cylindrical furnace cavity; 212, inverted conical furnace cavity; 213, fire observation window; 22, igniter; 23, natural gas conveying pipeline; 3, hot air pipeline; 4, feeding pipe; 5, slurry tank; 6, feeding pump; 7, air extraction pipe; 8, dust removal device; 9, cooling ring; 10, discharge pipe. DETAILED DESCRIPTION

[0027] In the following, the present application is further described in combination with the drawings and specific embodiments, and it should be noted that the following described embodiments or technical features can be combined in any manner to form new embodiments without conflict.

[0028] As shown in Figs. 1-3 A spray drying device 100 for producing 80-degree super-white light-transmitting ceramic rock plates, comprising a spray drying tower 1 and a natural gas heat supply device 2, wherein the air inlet end of the spray drying tower 1 is only communicated with the natural gas heat supply device 2 through a hot air pipeline 3;

[0029] The natural gas heating air device 2 comprises a natural gas combustion furnace 21, an igniter 22 and a natural gas conveying pipeline 23; the igniter 22 is arranged at the bottom of the natural gas combustion furnace 21, and the natural gas conveying pipeline 23 is in communication with the bottom of the natural gas combustion furnace 21.

[0030] The inner wall material of the spray drying tower 1 and the hot air pipeline 3 is high-temperature-resistant stainless steel.

[0031] In order to meet the production needs of the ultra-white light-transmitting ceramic rock plate product with a body whiteness of up to 80 degrees, the application improves the sintering structure, uses a natural gas combustion furnace instead of a combustion furnace using coal or oil as fuel, and uses the natural gas combustion furnace as the only fuel for sintering heat production, and improves the internal structure material of the spray drying tower and the hot air pipeline, and adds a layer of high-temperature-resistant stainless steel to ensure that the inside of the spray drying tower is not polluted and no scab and debris are generated, and the production quality of the product body whiteness is improved.

[0032] As a further preferred solution, the inner wall material of the spray drying tower 1, the hot air pipeline 3 and the natural gas combustion furnace 2 is 310S high-temperature-resistant stainless steel. 310S stainless steel is an austenitic chromium-nickel stainless steel. Due to its high chromium and nickel content, 310S has better creep strength and can operate continuously at high temperatures, has good high-temperature resistance, and has better high-temperature resistance than 316L.

[0033] As a further preferred solution, the natural gas combustion furnace 21 is a vertical combustion furnace 1, which has a cylindrical furnace cavity 211 and an inverted conical furnace cavity 212 located at the top of the cylindrical furnace cavity 211.

[0034] In order to improve the sintering heat of natural gas, the natural gas combustion furnace 21 is designed to have a vertical structure, and the bottom is used as the ignition position to improve the combustion completeness of natural gas. The carbon particle combustion degree can be up to more than 98%, the thermal efficiency can be up to more than 95%, and the heat supply stability and temperature uniformity are improved.

[0035] As a further preferred solution, a plurality of fire observation windows 213 are arranged on the natural gas combustion furnace 21.

[0036] As a further preferred solution, the hot air pipeline 3 is wrapped with a plurality of layers of thermal insulation cotton (not shown in the figure).

[0037] By arranging the plurality of layers of thermal insulation cotton, the heat supply stability can be improved, and the powder drying effect of the spray drying device can be improved.

[0038] As a further preferred solution, a plurality of spray pipes 11 are arranged on the spray drying tower 1, each spray pipe 11 is in communication with an external feed pipe 4, and a plurality of spray gun heads 12 are arranged on each spray pipe 11.

[0039] As a further preferred solution, a plurality of said spray gun heads 12 are uniformly distributed on said spray pipe 11, and the nozzles of the spray guns are oriented upwards.

[0040] The present application obtains the required particle size distribution of the powder for producing ceramic rock plates by designing a plurality of spray gun heads 12, and the slurry is sprayed upwards from the spray gun heads 12, and the slurry is in the form of extremely fine mist, so that the powder loss rate is greatly reduced, and the raw material loss cost is reduced.

[0041] As a further preferred solution, said feeding pipe 4 is in communication with an external slurry tank 5, and a feeding pump 6 is arranged on the feeding pipe 4.

[0042] As a further preferred solution, said spray drying tower 1 is provided with an air exhaust pipe 7, and the air exhaust pipe 7 is connected with a dust removal device 8. By arranging the air exhaust pipe 7 and the dust removal device 8, the pollution of the subsequent process is reduced, and the production is environmentally friendly.

[0043] As a further preferred solution, a cooling ring 9 is arranged on the outer wall of the bottom of said spray drying tower 1, and an annular cooling cavity is arranged in the cooling ring 9.

[0044] Since the powder obtained after the slurry is dried at high temperature is often too high in temperature, by arranging the cooling ring and the annular cooling cavity on the outer wall of the bottom of the spray drying tower 1, the powder outlet temperature of the spray tower is reduced, and the high-temperature powder is prevented from condensing into water mist when meeting water molecules in the air, so that the powder is prevented from being humidified and caked during the conveying process, which is not conducive to the subsequent screening and storage of the powder, and affects the quality of the powder press forming.

[0045] As a further preferred solution, a discharge pipe 10 is arranged at the bottom of said spray drying tower 1.

[0046] The above-mentioned embodiments are only preferred embodiments of the present application, and cannot be used to limit the scope of protection of the present application, and any non-essential changes and replacements made by those skilled in the art on the basis of the present application all belong to the scope of protection required by the present application.

Claims

1. A spray drying apparatus for producing 80-degree super white light transmitting ceramic rock plate, characterized in that, The natural gas hot air supply device comprises a natural gas combustion furnace, an igniter and a natural gas conveying pipeline. The igniter is arranged at the bottom of the natural gas combustion furnace, and the natural gas conveying pipeline is communicated with the bottom of the natural gas combustion furnace. The inner wall material of the spray drying tower and the hot air pipeline is high-temperature-resistant stainless steel.

2. The spray drying apparatus of claim 1, wherein, The inner wall material of the spray drying tower, the hot air pipeline and the natural gas combustion furnace is 310S high-temperature-resistant stainless steel.

3. The spray drying apparatus of claim 1, wherein, The natural gas combustion furnace is a vertical natural gas combustion furnace, which has a cylindrical furnace cavity and an inverted conical furnace cavity located at the top of the cylindrical furnace cavity.

4. The spray drying apparatus of claim 1, wherein, The natural gas combustion furnace is provided with a plurality of fire windows.

5. The spray drying apparatus of claim 1, wherein, The outer side of the hot air pipeline is covered with a plurality of layers of heat preservation cotton.

6. The spray drying apparatus of claim 5, wherein, The spray drying tower is provided with a plurality of spray pipes, each of which is communicated with an external feeding pipe, and each of the spray pipes is provided with a plurality of spray gun heads.

7. The spray drying apparatus of claim 5, wherein, The spray gun heads are uniformly distributed on the spray pipes, and the nozzles of the spray guns are upwardly directed.

8. The spray drying apparatus of claim 1, wherein, The feeding pipe is communicated with an external slurry tank, and the feeding pipe is provided with a feeding pump.

9. The spray drying apparatus of claim 1, wherein, The spray drying tower is provided with an air extraction pipe which is connected with a dust removal device.

10. The spray drying apparatus of claim 1, wherein, The outer wall of the bottom of the spray drying tower is provided with a cooling ring, and the cooling ring is internally provided with an annular cooling cavity. The bottom of the spray drying tower is provided with a discharging pipe.

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