Energy-saving kiln car with masonry structure

Abstract

The utility model relates to a kiln car with an energy-saving masonry structure, which comprises a track arranged at the bottom of a tunnel kiln, a car body is arranged on the track, and a lower heavy brick layer, a middle light brick layer and an upper heavy brick layer are arranged above the car body. The lower heavy brick layer and the top of the vehicle body are bonded and fixed through refractory mortar layers, the middle light brick layer and the lower heavy brick layer are bonded and fixed through refractory mortar layers, and refractory fiber cotton layers are arranged above and below the upper heavy brick layer. The light refractory bricks with low thermal conductivity are partially adopted, downward heat transfer through the light refractory bricks is reduced, the temperature of the kiln car body and the temperature of the wheel bearings are reduced, oxidation of steel materials is reduced, and the service life of the kiln car is prolonged; the light refractory bricks are used, so that the weight of the kiln car can be reduced, the friction force of the kiln car can be reduced, the load of a car jacking machine of the tunnel kiln car can be reduced, and the effect of protecting the car jacking machine can be achieved.

Description

Technical Field

[0001] The utility model relates to a kiln car with an energy-saving masonry structure, belonging to the technical field of kiln cars. Background Art

[0002] The tunnel kiln car for high-temperature alumina calcination is a device that carries the alumina sagger. The kiln car is composed of two parts: the kiln car body and refractory bricks. The upper refractory bricks are in the high-temperature environment of the tunnel kiln when working. Their comprehensive performance plays a vital role in important indicators such as the protection of the lower steel kiln car and saving fuel consumption. The original refractory brick masonry method is to use all heavy bricks with high thermal conductivity.

[0003] Disadvantages of existing technology:

[0004] 1. All heavy bricks are used, which have high thermal conductivity, resulting in high temperature of the lower steel kiln car, rapid oxidation of the car body and short service life;

[0005] 2. Heavy bricks have high heat transfer, and the wheel bearings under the car are overheated and seriously damaged, affecting the safe operation of the kiln car;

[0006] 3. The energy loss through heavy bricks is high, resulting in a decrease in the thermal utilization rate of natural gas and an increase in the calcination cost of alumina powder. Utility Model Content

[0007] The utility model provides an energy-saving kiln car with masonry structure, which solves the problems that the existing kiln cars all use heavy bricks, have high heat conductivity and large heat energy loss, and the car body oxidizes quickly, is severely damaged and has a short service life.

[0008] The utility model relates to an energy-saving kiln car with masonry structure, comprising a track arranged at the bottom of a tunnel kiln, a car body being arranged on the track, a lower heavy brick layer, a middle light brick layer and an upper heavy brick layer being arranged above the car body, the lower heavy brick layer and the top of the car body, and the middle light brick layer and the lower heavy brick layer being bonded and fixed with refractory mud layers, and refractory fiber cotton layers being arranged above and below the upper heavy brick layer.

[0009] As a preferred embodiment, a supporting flange is provided on the outer side of the top of the vehicle body, a sealing boss is provided on the side wall of the tunnel kiln, and the outer sides of the lower heavy brick layer, the middle light brick layer and the upper heavy brick layer all extend to the position above the sealing boss to reduce heat energy loss.

[0010] As a preferred embodiment, a sealing groove is fixed on the inner side of the bottom of the tunnel kiln, the sealing groove is filled with ceramsite balls, a sealing plate is provided in the middle of the sealing groove, and the top of the sealing plate is fixed to the bottom of the vehicle body. When the ceramsite balls are used for sealing, they will not clump together, and the sealing effect is better.

[0011] As a preferred embodiment, a ball baffle is fixed on the inner top of the sealing groove, and an avoidance groove for avoiding the ball baffle is provided at the bottom of the kiln car, so as to prevent the ceramsite balls from splashing out when the kiln car moves.

[0012] As a preferred embodiment, an escape opening is provided on the side wall of the tunnel kiln above the sealing groove, and a receiving groove is fixed on the bottom outer wall of the kiln car, and the outer end of the receiving groove extends into the escape opening. The receiving groove can collect alumina particles dropped from the side of the tunnel kiln to reduce losses.

[0013] The utility model has the following beneficial effects:

[0014] Part of the lightweight refractory bricks with low thermal conductivity are used to reduce the downward heat transfer through the lightweight bricks, reduce the temperature of the kiln car body and wheel bearings, reduce the oxidation of steel materials, and increase the service life of the kiln car; reducing heat energy loss can reduce natural gas consumption and achieve the purpose of energy saving. The use of lightweight refractory bricks can reduce the weight of the kiln car, reduce the friction of the kiln car, reduce the load on the top car of the tunnel kiln car, and play a role in protecting the top car. In addition, refractory fiber cotton layers are provided above and below the upper heavy brick layer to prevent alumina particles from falling into the brick joints of the adjacent upper heavy brick layer, causing the upper heavy brick layer to expand outward and wear the side walls of the tunnel kiln. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 for Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0017] In the figure: 1. Sealing plate; 2. Sealing groove; 3. Car body; 4. Refractory fiber cotton layer; 5. Upper heavy brick layer; 6. Middle light brick layer; 7. Lower heavy brick layer; 8. Refractory mud layer; 9. Tunnel kiln; 10. Sealing boss; 11. Support flange; 12. Track; 13. Avoidance groove; 14. Ball baffle plate; 15. Clay ball; 16. Avoidance opening; 17. Miscellaneous groove. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with embodiments.

[0019] Embodiment 1, as Figure 1 to Figure 2 As shown, the utility model is an energy-saving kiln car with masonry structure, including a track 12 arranged at the bottom of a tunnel kiln 9, a car body 3 is arranged on the track 12, a lower heavy brick layer 7, a middle light brick layer 6 and an upper heavy brick layer 5 are arranged above the car body 3, the lower heavy brick layer 7 and the top of the car body 3, and the middle light brick layer 6 and the lower heavy brick layer 7 are bonded and fixed with a refractory mud layer 8, and refractory fiber cotton layers 4 are arranged above and below the upper heavy brick layer 5.

[0020] A lower heavy brick layer 7 is bonded and fixed on the top of the vehicle body 3 by a refractory mud layer 8, and then a middle light brick layer 6 is bonded and fixed above the lower heavy brick layer 7 by a refractory mud layer 8, and then a refractory fiber cotton layer 4 is laid on top of the middle light brick layer 6, and then an upper heavy brick layer 5 is laid on top, and finally a refractory fiber cotton layer 4 is laid on top of the upper heavy brick layer 5. Working principle: Lightweight refractory bricks with low thermal conductivity are partially used to reduce the downward heat transfer through the lightweight bricks, reduce the temperature of the kiln car body and wheel bearings, reduce the oxidation of steel materials, and increase the service life of the kiln car; reducing heat energy loss can reduce natural gas consumption and achieve the purpose of energy saving. The use of lightweight refractory bricks can reduce the weight of the kiln car, reduce the friction of the kiln car, and reduce the load of the kiln car top machine of the tunnel kiln 9, which plays a role in protecting the top machine. In addition, refractory fiber cotton layers 4 are provided above and below the upper heavy brick layer 5 to prevent alumina particles from falling into the brick joints of the adjacent upper heavy brick layer 5, causing the upper heavy brick layer 5 to expand outward and wear the side walls of the tunnel kiln 9.

[0021] Example 2, based on Example 1, a supporting flange 11 is provided on the outer side of the top of the vehicle body 3, a sealing boss 10 is provided on the side wall of the tunnel kiln 9, and the outer sides of the lower heavy brick layer 7, the middle light brick layer 6 and the upper heavy brick layer 5 all extend to the position above the sealing boss 10.

[0022] A sealing groove 2 is fixed inside the bottom of the tunnel kiln 9, and the sealing groove 2 is filled with ceramsite balls 15. A sealing plate 1 is provided in the middle of the sealing groove 2, and the top of the sealing plate 1 is fixed to the bottom of the vehicle body 3. The particle size of the ceramsite balls 15 is 4-5 mm, and the refractory fiber cotton layer 4 is about 1 cm. The refractory fiber cotton layer 4 is refractory aluminum silicate fiber cotton.

[0023] A ball baffle plate 14 is fixed to the inner top of the sealing groove 2 , and an avoidance groove 13 for avoiding the ball baffle plate 14 is provided at the bottom of the vehicle body 3 .

[0024] An escape opening 16 is provided on the side wall of the tunnel kiln 9 above the sealing groove 2, and a receiving groove 17 is fixed on the outer side wall of the bottom of the car body 3, and the outer end of the receiving groove 17 extends into the escape opening 16. When the kiln car moves, the sealing plate 1 extends into the sealing groove 2, and the ceramsite ball 15 can play a sealing effect, reduce heat loss, and prevent alumina dust leakage, and the receiving groove 17 can catch the escaped alumina dust.

[0025] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0026] In the description of the present invention, the terms "inside", "outside", "longitudinal", "lateral", "upper", "lower", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

Claims

1. An energy-saving masonry kiln car, comprising a track (12) arranged at the bottom of a tunnel kiln (9), a car body (3) being arranged on the track (12), characterized in that: A lower heavy brick layer (7), a middle light brick layer (6) and an upper heavy brick layer (5) are provided above the vehicle body (3); the lower heavy brick layer (7) and the top of the vehicle body (3), and the middle light brick layer (6) and the lower heavy brick layer (7) are bonded and fixed with a refractory mud layer (8); and refractory fiber cotton layers (4) are provided above and below the upper heavy brick layer (5).

2. The energy-saving kiln car of masonry structure according to claim 1 is characterized in that: A supporting flange (11) is provided on the outer side of the top of the vehicle body (3), a sealing boss (10) is provided on the side wall of the tunnel kiln (9), and the outer sides of the lower heavy brick layer (7), the middle light brick layer (6) and the upper heavy brick layer (5) all extend to the upper position of the sealing boss (10).

3. The energy-saving masonry kiln car according to claim 1, characterized in that: A sealing groove (2) is fixed on the inner side of the bottom of the tunnel kiln (9), the sealing groove (2) is filled with ceramsite balls (15), a sealing plate (1) is arranged in the middle of the sealing groove (2), and the top of the sealing plate (1) is fixed to the bottom of the vehicle body (3).

4. The energy-saving masonry kiln car according to claim 3 is characterized in that: A ball baffle plate (14) is fixed to the inner top of the sealing groove (2), and an avoidance groove (13) for avoiding the ball baffle plate (14) is provided at the bottom of the vehicle body (3).

5. The energy-saving kiln car of masonry structure according to claim 4, characterized in that: An escape opening (16) is provided on the side wall of the tunnel kiln (9) above the sealing groove (2), and a receiving groove (17) is fixed on the outer side wall of the bottom of the vehicle body (3), and the outer end of the receiving groove (17) extends into the escape opening (16).

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