Sealing device of high-temperature kiln car for calcining mullite by coal gangue

Abstract

The utility model discloses a coal gangue calcined mullite high-temperature kiln car sealing device which comprises a tunnel calcining kiln and a kiln car platform matched with the tunnel calcining kiln, a heat insulation felt is laid on the top of the kiln car platform, a bottom refractory brick layer is fixedly arranged on the top of the heat insulation felt, and an aluminum silicate fiber felt is laid on the top of the bottom refractory brick layer. According to the sealing device for the coal gangue calcined mullite high-temperature kiln car, the three layers of refractory bricks are laid on the kiln car platform, and corresponding fiber mats with different temperature resistance capacities are laid between the adjacent refractory bricks, so that the sealing effect of the high-temperature kiln car is improved, and the service life of the kiln car is prolonged. Therefore, the sealing performance and the high temperature resistance of the kiln car can be obviously improved, the phenomenon that fire runs through gaps of refractory bricks is avoided under the high-temperature calcination condition, meanwhile, the edge sealing groove and the sealing assembly are additionally arranged on the edge of the kiln car, the sealing performance of the edge of the kiln car can be improved, the bottom temperature can reach the normal temperature level in the long-time calcination process of the kiln car, and the service life is longer.

Description

Technical Field

[0001] The utility model relates to the technical field of high temperature resistant kiln cars, in particular to a sealing device for a high temperature kiln car made of coal gangue calcined mullite. Background Art

[0002] Gangue is a solid waste discharged during the coal mining and coal washing processes. It is a black-gray rock with a low carbon content and harder than coal that accompanies the coal seam during the coal formation process. It can produce mullite by calcining. When calcining gangue, a tunnel kiln is usually used. The gangue to be burned is placed on a kiln car, and the kiln car transports the gangue to the tunnel kiln. The traditional kiln car sealing device is mainly composed of a kiln car frame and refractory bricks. Two layers of refractory bricks are laid on the upper and lower parts of the kiln car frame. The two layers of refractory bricks are directly in contact with each other to achieve the sealing of the kiln car. The above common types of kiln car sealing devices have the following shortcomings in actual applications:

[0003] Since the calcination of coal gangue into mullite needs to be carried out under high temperature conditions, the calcination temperature is usually above 1650℃. The kiln car is sealed by directly laying refractory bricks. Under the high temperature condition of 1650℃, there will be a problem of downward fire between the refractory bricks, which will cause the kiln car frame to become high temperature. Since the kiln car frame is usually made of steel, it is easily damaged under high temperature conditions and has a short service life. Utility Model Content

[0004] The utility model aims to provide a sealing device for a high-temperature kiln car calcined with coal gangue to solve the problem of fire leaking downwards from the kiln car and a short service life of the kiln car in the existing sealing method for a high-temperature kiln car calcined with coal gangue proposed in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a coal gangue calcined mullite high-temperature kiln car sealing device, comprising a tunnel calcining kiln and a kiln car platform matching the tunnel calcining kiln, the top of the kiln car platform is paved with a thermal insulation felt, the top of the thermal insulation felt is fixedly provided with a bottom refractory brick layer, the top of the bottom refractory brick layer is paved with an aluminum silicate fiber felt, the top of the aluminum silicate fiber felt is fixedly provided with a middle refractory brick layer, the top of the middle refractory brick layer is paved with a polycrystalline mullite fiber cotton pad, the top of the polycrystalline mullite fiber cotton pad is fixedly provided with a surface refractory brick layer, U-shaped edge sealing grooves are provided on both sides of the bottom refractory brick layer, and a sealing component for fire blocking at the edge of the kiln car is fixedly installed on the top of the inner wall of the U-shaped edge sealing groove.

[0006] Preferably, the sealing assembly includes a flame retardant plate frame and a plurality of fire-blocking baffles fixedly arranged at the bottom of the flame retardant plate frame, the surfaces of the fire-blocking baffles are covered with fire-blocking cotton pads, and the fire-blocking baffles are arranged at equal intervals; the fireproof and flame retardant effects are significant.

[0007] Preferably, kiln car sealing platforms are fixedly arranged on both sides of the inner wall of the tunnel calcining kiln, and the kiln car sealing platforms are arranged opposite to the U-shaped side sealing grooves.

[0008] Preferably, a sealing gasket is fixedly provided on the inner side wall of the U-shaped edge sealing groove, which is beneficial to improving the sealing performance of the edge of the kiln car.

[0009] Preferably, a kiln car frame is fixedly arranged at the bottom of the kiln car platform, movable shafts are rotatably arranged on both sides of the bottom of the kiln car frame, and kiln car guide wheels are fixedly installed at both ends of the movable shaft; the kiln car is easy to move.

[0010] Preferably, the bottom refractory brick layer and the middle refractory brick layer are both double-layer refractory bricks, and the refractory bricks in two adjacent layers are staggered to prevent flames from flowing down along the gaps in the refractory bricks under high temperature conditions, thereby improving the sealing effect of the kiln car.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The high-temperature kiln car sealing device lays three layers of refractory bricks on the kiln car platform, and corresponding fiber mats with different temperature resistance are laid between adjacent refractory bricks, thereby significantly improving the sealing and high temperature resistance of the kiln car. Under high-temperature calcination conditions, there will be no fire in the gaps between the refractory bricks. At the same time, side sealing grooves and sealing components are added to the edge of the kiln car to improve the sealing of the edge of the kiln car. During the long-term calcination process, the bottom temperature of the kiln car can reach normal temperature and the service life is longer. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the kiln car sealing device of the utility model;

[0014] Figure 2 This is a front cross-sectional view of the kiln car sealing device of the utility model;

[0015] Figure 3 This is an assembly cross-sectional view of the kiln car sealing device of the utility model;

[0016] Figure 4 It is an enlarged view of part A of the utility model.

[0017] In the figure: 1. kiln car platform; 2. bottom refractory brick layer; 3. middle refractory brick layer; 4. surface refractory brick layer; 5. polycrystalline mullite fiber cotton pad; 6. aluminum silicate fiber felt; 7. insulation felt; 8. U-shaped edge sealing groove; 9. flame retardant plate frame; 10. fire-blocking partition; 11. fire-blocking cotton pad; 12. sealing spacer; 13. kiln car frame; 14. kiln car guide wheel; 15. tunnel calcining kiln; 16. kiln car sealing platform; 17. moving shaft. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0019] See also Figure 1-4 The utility model provides a sealing device for a high-temperature kiln car calcined with coal gangue, comprising a tunnel calcining kiln 15 and a kiln car platform 1 matched with the tunnel calcining kiln 15, a heat-insulating felt 7 is laid on the top of the kiln car platform 1, a bottom refractory brick layer 2 is fixedly arranged on the top of the heat-insulating felt 7, an aluminum silicate fiber felt 6 is laid on the top of the bottom refractory brick layer 2, a middle refractory brick layer 3 is fixedly arranged on the top of the aluminum silicate fiber felt 6, a polycrystalline mullite fiber cotton pad 5 is laid on the top of the middle refractory brick layer 3, a surface refractory brick layer 4 is fixedly arranged on the top of the polycrystalline mullite fiber cotton pad 5, U-shaped edge sealing grooves 8 are opened on both sides of the bottom refractory brick layer 2, a sealing component for fire-blocking at the edge of the kiln car is fixedly installed on the top of the inner wall of the U-shaped edge sealing groove 8, the bottom refractory brick layer 2 and the middle refractory brick layer 3 are both double-layer refractory bricks, and the adjacent two layers of refractory bricks are staggered;

[0020] When in use, the coal gangue is laid on the surface refractory brick layer 4 and sent to the tunnel calcining kiln 15 for calcining. During the calcination process of the kiln car in the tunnel calcining kiln 15, the surface refractory brick layer 4 is in the tunnel calcining kiln 15 together. The polycrystalline mullite fiber cotton pad 5 is laid under the surface refractory brick layer 4, which can withstand high temperatures above 1600°C and prevent the flames from spreading downward. Aluminum silicate fiber felt 6 is laid under the middle refractory brick layer 3. The aluminum silicate fiber felt 6 can withstand high temperatures above 1300°C, and can provide heat insulation and further prevent the flames from spreading downward. When the kiln car platform 1 is calcined, it is placed under the tunnel calcining kiln 15 and is insulated by the insulation felt 7. The bottom of the kiln car platform 1 can be at room temperature, and the fire resistance, high temperature resistance, sealing and flame retardancy effects are remarkable.

[0021] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 , further, the sealing assembly includes a flame retardant plate frame 9 and a plurality of fire-blocking baffles 10 fixedly arranged at the bottom of the flame retardant plate frame 9, the surface of the fire-blocking baffles 10 is paved with fire-blocking cotton pads 11, the fire-blocking baffles 10 are arranged at equal intervals, and kiln car sealing platforms 16 are fixedly arranged on both sides of the inner wall of the tunnel calcining kiln 15, the kiln car sealing platform 16 is arranged opposite to the U-shaped side sealing groove 8, and the inner side wall of the U-shaped side sealing groove 8 is fixedly provided with a sealing spacer 12;

[0022] When in use, when the kiln car platform 1 moves in the tunnel calcining kiln 15, the kiln car sealing platform 16 will be stuck in the U-shaped edge sealing groove 8, and there is a small gap between the bottom of the fire-blocking baffle 10 and the kiln car sealing platform 16, which is blocked by multiple spaced fire-blocking baffles 10, thereby improving the sealing effect of the kiln car edge.

[0023] See also Figure 1 , Figure 2 and Figure 3 Furthermore, a kiln car frame 13 is fixedly provided at the bottom of the kiln car platform 1, and movable shafts 17 are rotatably provided on both sides of the bottom of the kiln car frame 13, and kiln car guide wheels 14 are fixedly installed at both ends of the movable shaft 17;

[0024] When in use, the kiln car platform 1 is supported by the kiln car frame 13 , and the kiln car guide wheel 14 can move in the tunnel calcining kiln 15 .

[0025] When the embodiment of the present application is in use: coal gangue is laid on the surface refractory brick layer 4, the kiln car platform 1 is supported by the kiln car frame 13, the kiln car guide wheel 14 can move in the tunnel calcining kiln 15, and the coal gangue to be calcined is sent to the tunnel calcining kiln 15 for calcination, and polycrystalline mullite fiber cotton pads 5, aluminum silicate fiber felts 6 and thermal insulation felts 7 are laid between adjacent refractory bricks, so that the sealing and high temperature resistance of the kiln car can be significantly improved. Under high-temperature calcination conditions, there will be no fire in the gaps between the refractory bricks.

[0026] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-temperature kiln car sealing device for calcining mullite with coal gangue, comprising a tunnel calcining kiln (15) and a kiln car platform (1) matching the tunnel calcining kiln (15), characterized in that: The top of the kiln car platform (1) is paved with a heat-insulating felt (7), a bottom refractory brick layer (2) is fixedly arranged on the top of the heat-insulating felt (7), an aluminum silicate fiber felt (6) is laid on the top of the bottom refractory brick layer (2), a middle refractory brick layer (3) is fixedly arranged on the top of the aluminum silicate fiber felt (6), a polycrystalline mullite fiber cotton pad (5) is laid on the top of the middle refractory brick layer (3), a surface refractory brick layer (4) is fixedly arranged on the top of the polycrystalline mullite fiber cotton pad (5), both sides of the bottom refractory brick layer (2) are provided with U-shaped edge sealing grooves (8), and a sealing component for fire-blocking at the edge of the kiln car is fixedly installed on the top of the inner wall of the U-shaped edge sealing groove (8).

2. The sealing device for high temperature kiln car for calcining mullite with coal gangue according to claim 1, characterized in that: The sealing assembly comprises a flame retardant plate frame (9) and a plurality of fire-blocking baffles (10) fixedly arranged at the bottom of the flame retardant plate frame (9), the surface of the fire-blocking baffles (10) is paved with fire-blocking cotton pads (11), and the fire-blocking baffles (10) are arranged at equal intervals.

3. The sealing device for high temperature kiln car of coal gangue calcined mullite according to claim 2 is characterized in that: Kiln car sealing platforms (16) are fixedly arranged on both sides of the inner wall of the tunnel calcining kiln (15), and the kiln car sealing platforms (16) are arranged opposite to the U-shaped side sealing grooves (8).

4. The sealing device for high-temperature kiln car for calcining mullite with coal gangue according to claim 2, characterized in that: A sealing gasket (12) is fixedly arranged on the inner side wall of the U-shaped edge sealing groove (8).

5. The sealing device for high temperature kiln car of coal gangue calcined mullite according to claim 1, characterized in that: A kiln car frame (13) is fixedly arranged at the bottom of the kiln car platform (1), and movable shafts (17) are rotatably arranged on both sides of the bottom of the kiln car frame (13), and kiln car guide wheels (14) are fixedly installed at both ends of the movable shaft (17).

6. The sealing device for high temperature kiln car of coal gangue calcined mullite according to claim 1, characterized in that: The bottom refractory brick layer (2) and the middle refractory brick layer (3) are both double-layer refractory bricks, and the refractory bricks in two adjacent layers are arranged in a staggered manner.

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