Tunnel kiln for firing refractory material

Abstract

The utility model relates to the technical field of tunnel kilns, in particular to a tunnel kiln for firing refractory materials, which comprises a preheating section, a firing section and a cooling section, the firing section comprises a tunnel kiln wall body and a kiln top, the kiln top is arranged at the upper end of the tunnel kiln wall body, a plurality of vent holes are arranged on the tunnel kiln wall body at intervals, a plurality of flow guide holes are arranged on the kiln top at intervals, and the cooling section is arranged on the kiln top. The side face of the tunnel kiln wall is connected with a ventilation pipe, the ventilation pipe is communicated with the ventilation hole, the kiln top is connected with a gas guide pipe, the gas guide pipe is communicated with the flow guide hole, and the ventilation pipe is connected with a heat conduction pipeline. According to the tunnel kiln, the ventilation holes are formed in the firing section of the tunnel kiln body and communicated with the flow guide holes, the ventilation pipes are communicated with the ventilation holes, and the gas guide pipes are communicated with the flow guide holes, so that gas circulation of the firing section is achieved, it is guaranteed that the tunnel kiln body of the firing section is heated evenly, the sintering efficiency of refractory materials is improved, and the effect of pressure equalization in the firing section is achieved; heat energy is fully utilized, and energy consumption of the tunnel kiln is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel kilns, in particular to a tunnel kiln for firing refractory materials. Background Art

[0002] The tunnel kiln for firing refractory materials is a most commonly used continuous working kiln in the refractory material industry, widely used in the roasting production of ceramic products, and also widely applied in metallurgical industries such as abrasives. Generally, a tunnel kiln is a long straight tunnel, which has the advantages of large output, high thermal efficiency and low labor intensity.

[0003] The prior art one discloses a tunnel kiln for firing refractory materials with the application number 201920513523.4. The technical solution includes a tunnel kiln body, which is divided into a sintering bin and a cooling bin inside. A groove is opened at the bottom of the inner wall of the tunnel kiln body. Bearings are arranged on the side surfaces of the inner wall of the groove. A rotating shaft passes through the bearings. One end of the rotating shaft is welded with a lead screw. The main problem solved by this technical solution is the material transportation problem, and the effects of energy saving and efficiency improvement cannot be achieved.

[0004] The prior art two discloses a tunnel kiln for firing refractory materials with the application number 202222134909.9. The technical solution includes a tunnel kiln main body and a sealing component. A base is arranged at the bottom of the tunnel kiln main body. A kiln car is arranged on the top of the base. A kiln door is opened on one side of the tunnel kiln main body. Heating pipes are arranged on both sides of the inner wall of the tunnel kiln main body. A kiln top is arranged at the top of the inner wall of the tunnel kiln main body. A sealing component is arranged at the lower end of the kiln top. The sealing component includes a cross beam and a hollow hanging plate. A load-bearing hanging piece is sleeved inside the cross beam. Hollow hanging plates are arranged on both sides of the load-bearing hanging piece. A heat preservation cavity is formed between the kiln top and the hollow hanging plate. The heat preservation cavity is filled with a heat preservation layer, and the material of the heat preservation layer is aluminosilicate. The main problem solved by this technical solution is the problem that the sealing performance of the tunnel kiln decreases after repeated heating, the sintering efficiency of the refractory material cannot be improved, the heat energy utilization is insufficient, and the energy consumption is high.

[0005] Therefore, it is necessary to propose an improvement to overcome the defects of the prior art. Summary of the Invention

[0006] The purpose of the utility model is to solve the problems in the prior art, and provide a tunnel kiln for firing refractory materials, so as to solve the problems of low sintering efficiency and high energy consumption of refractory materials.

[0007] The technical solution of the utility model is as follows:

[0008] A tunnel kiln for firing refractory materials includes a preheating section, a firing section, and a cooling section. The firing section includes a tunnel kiln wall and a kiln roof. The kiln roof is arranged at the upper end of the tunnel kiln wall. A plurality of ventilation holes are spacedly arranged on the tunnel kiln wall, and a plurality of diversion holes are spacedly arranged on the kiln roof. The ventilation holes are communicated with the diversion holes. A ventilation pipe is connected to the side surface of the tunnel kiln wall, and the ventilation pipe is communicated with the ventilation holes. A guide pipe is connected to the kiln roof, and the guide pipe is communicated with the diversion holes.

[0009] As a preferred technical solution, heat insulation doors are arranged at both the front and rear ends of the firing section. Rack teeth are arranged on both sides of the heat insulation doors. A lifting motor is arranged on the kiln roof. A driving gear is connected to the output shaft of the lifting motor, and the driving gear is meshed and connected with the rack teeth.

[0010] As a preferred technical solution, a plurality of groups of hanging beams are arranged on the kiln roof at intervals. A heat insulation layer board and a ceiling are installed between adjacent two hanging beams. A support seat is arranged at the bottom of the hanging beam, and the ceiling is installed on the support seat.

[0011] As a preferred technical solution, it further includes a tunnel kiln base, and rails are arranged on the tunnel kiln base.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] For the tunnel kiln for firing refractory materials of the present utility model, ventilation holes are arranged in the firing section of the tunnel kiln body and communicated with diversion holes. The ventilation pipe is communicated with the ventilation holes, and the guide pipe is communicated with the diversion holes, realizing gas circulation in the firing section, ensuring uniform heating inside the tunnel kiln body in the firing section, improving the sintering efficiency of refractory materials, achieving the effect of uniform pressure in the firing section, making full use of heat energy, and reducing the energy consumption of the tunnel kiln. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic internal structure diagram of the tunnel kiln for firing refractory materials of the present utility model;

[0015] Figure 2 is a side view of the tunnel kiln for firing refractory materials of the present utility model.

[0016] In the figure: 1, tunnel kiln wall; 2, driving gear; 3, heat insulation door; 4, guide pipe; 5, ventilation pipe; 6, hanging beam; 7, support seat; 8, kiln roof; 9, lifting motor; 10, rack teeth; 11, ventilation hole; 12, tunnel kiln base; 13, heat insulation layer board; 14, ceiling; 15, track; 16, diversion hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] In order to make the technical means, technical features, utility model purpose, and technical effects achieved by the present utility model easy to understand, the present utility model will be further described below with reference to specific drawings.

[0018] As Figure 1 and Figure 2 shown, it is a schematic structural diagram of a tunnel kiln for firing refractory materials of the present utility model.

[0019] The tunnel kiln for firing refractory materials in this embodiment includes a tunnel kiln wall 1, a kiln roof 8 and a tunnel kiln base 12. Tunnel kiln walls 1 are fixed on both the left and right sides of the tunnel kiln base 12, and the kiln roof 8 is fixed on the tunnel kiln walls 1 on both sides. Vent holes 11 are provided on both the left and right tunnel kiln walls 1. A plurality of vent holes 11 are arranged at intervals on the tunnel kiln wall 1. Vent pipes 5 are connected to the outer sides of the tunnel kiln walls on both sides. The vent pipes 5 on both sides are respectively communicated with the vent holes 11 on both sides, and the plurality of vent pipes are communicated with each other; A plurality of diversion holes 16 are provided on both the left and right sides of the kiln roof 8. The positions of the diversion holes 16 correspond to those of the vent holes 11, and the diversion holes 16 are communicated with the vent holes 11. A plurality of guide pipes 4 are connected to both the left and right sides at the upper end of the kiln roof 8. The guide pipes 4 are communicated with the corresponding diversion holes 16. The vent pipes 5 and the guide pipes 4 accelerate the gas flow in the firing section of the tunnel kiln, achieving a pressure equalizing effect, ensuring uniform heating of the refractory materials in the firing section of the tunnel kiln, improving the sintering efficiency, and achieving the effect of energy reduction and efficiency increase.

[0020] Heat insulation doors 3 are installed at both the front and rear ends of the firing section of the tunnel kiln. Rack bars 10 are fixed on both the left and right sides of the heat insulation doors 3. A lifting motor 9 is fixed on the kiln roof 8. A driving gear 2 is fixed on the output shaft of the lifting motor 9. The driving gear 2 is meshed with the rack bar 10 to drive the heat insulation doors 3 to move up and down. After the refractory materials reach the firing section of the tunnel kiln, the heat insulation doors 3 on both the front and rear sides of the firing section are driven by the driving motor 9 to move downward, making full use of the heat in the firing section and achieving the effect of heat preservation in the firing section of the tunnel kiln.

[0021] A plurality of hanging beams 6 are installed at intervals on the kiln roof 8. A support seat 7 is fixed at the bottom of the hanging beam 6. A heat insulation layer board 13 and a ceiling 14 are fixedly installed between every two adjacent hanging beams 6. The heat insulation layer board 13 is installed at the upper end of the ceiling 14, and the ceiling 14 is installed at the upper end of the support seat 7. The heat insulation layer board 13 and the ceiling 14 are installed in sections, reducing the stress generated by heat on the heat insulation layer board 13 and the ceiling 14 and ensuring the service life of the heat insulation layer board 13 and the ceiling 14.

[0022] A track 15 is fixed on the tunnel kiln base 12 for the traveling of the material handling trolley.

[0023] In summary, the above is only a preferred embodiment of the present utility model and is not used to limit the scope of implementation of the present utility model. That is, all equivalent changes and modifications made according to the content of the scope of the patent application of the present utility model shall fall within the technical scope of the present utility model.

Claims

1. A tunnel kiln for refractory material firing, comprising a preheating section, a firing section and a cooling section, characterized in that: The firing section comprises a tunnel kiln wall (1) and a kiln roof (8), the kiln roof (8) being arranged at the upper end of the tunnel kiln wall (1), a plurality of ventilation holes (11) being arranged at intervals on the tunnel kiln wall (1), a plurality of flow guide holes (16) being arranged at intervals on the kiln roof (8), the ventilation holes (11) being communicated with the flow guide holes (16), a ventilation pipe (5) being connected to the side of the tunnel kiln wall (1), the ventilation pipe (5) being communicated with the ventilation holes (11), and an air guide pipe (4) being connected to the kiln roof (8), the air guide pipe (4) being communicated with the flow guide holes (16).

2. The tunnel kiln for refractory material firing according to claim 1, characterized in that: The front and rear ends of the firing section are both provided with heat-insulating doors (3), both sides of the heat-insulating doors (3) are provided with racks (10), the kiln top (8) is provided with a lifting motor (9), the output shaft of the lifting motor (9) is connected to a driving gear (2), and the driving gear (2) is meshingly connected to the rack (10).

3. The tunnel kiln for refractory material firing according to claim 1, characterized in that: A plurality of groups of suspension beams (6) are arranged at intervals on the kiln roof (8), and a thermal insulation layer (13) and a suspended ceiling (14) are installed between two adjacent suspension beams (6). A support seat (7) is provided at the bottom of the suspension beam (6), and the suspended ceiling (14) is installed on the support seat (7).

4. The tunnel kiln for refractory material firing according to claim 1, characterized in that: It also includes a tunnel kiln base (12), on which a track (15) is provided.

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