A tunnel kiln for firing composite special silica-molybdenum bricks

Abstract

The utility model relates to the technical field of tunnel kilns, in particular to a composite special silica-molybdenum brick firing tunnel kiln, which can not only preheat the silica-molybdenum bricks to accelerate the drying efficiency of the silica-molybdenum bricks, but also accelerate the cooling of the silica-molybdenum bricks and reduce the heat loss; it comprises a tunnel kiln; it also comprises a traction mechanism, a heating mechanism, a preheating mechanism and a cooling mechanism, the traction mechanism is installed on the tunnel kiln and pulls the silica-molybdenum bricks, the heating mechanism is installed on the traction mechanism to dry the silica-molybdenum bricks, the preheating mechanism is installed on the tunnel kiln and preheats the silica-molybdenum bricks with dried gas, and the cooling mechanism is installed on the heating mechanism and accelerates the cooling of the silica-molybdenum bricks.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel kilns, in particular to a tunnel kiln for firing composite special silica-molybdenum bricks. Background Art

[0002] Silica-mullite brick is a high-performance refractory material, mainly composed of siliceous materials and mullite. Silica-mullite brick has excellent wear resistance, high temperature performance, spalling resistance and thermal shock stability, so it is widely used in high-temperature industrial equipment such as cement rotary kiln, glass kiln, steel smelting, etc.

[0003] Existing tunnel kilns, such as the high-temperature section exhaust temperature-adjusting refractory brick firing tunnel kiln disclosed in the utility model patent with application number 202220928532.1, have a main structure including an exhaust pump arranged on the upper surface of the tunnel kiln body, the exhaust pump is close to the tail end of the high-temperature section of the tunnel kiln body, the air inlet end of the exhaust pump is connected to an exhaust pipe, and the air outlet end of the exhaust pump is connected to an air guide pipe, which extends to the front end of the high-temperature section along the length direction of the tunnel kiln body, and a plurality of air guide branch pipes are connected to the bottom surface of the air guide pipe, which extend into the interior of the tunnel kiln body; when in use, the air inside the high-temperature section of the tunnel kiln body is extracted by the exhaust pump in cooperation with the exhaust pipe, so that the high-temperature section of the tunnel kiln body forms an airflow along its length direction, the air extracted by the exhaust pump enters the air guide branch pipe through the air guide pipe, and is finally discharged from the air outlet pipe, so that the high-temperature section of the tunnel kiln body forms an airflow along its width direction, and the high-temperature section of the tunnel kiln body is circulated by forming airflow in the length direction and width direction of the high-temperature section of the tunnel kiln body.

[0004] However, most of the existing tunnel kilns have low heat utilization rates, resulting in heat waste. In addition, natural cooling after drying takes a long time, affecting subsequent transportation. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a composite special silica-molybdenum brick firing tunnel kiln which can not only preheat silica-molybdenum bricks to accelerate the drying efficiency of silica-molybdenum bricks, but also accelerate the cooling of silica-molybdenum bricks and reduce heat loss.

[0006] The utility model discloses a composite special silicon-molybdenum brick firing tunnel kiln, comprising a tunnel kiln; a traction mechanism, a heating mechanism, a preheating mechanism and a cooling mechanism, wherein the traction mechanism is installed on the tunnel kiln and tractions the silicon-molybdenum bricks, the heating mechanism is installed on the traction mechanism and dries the silicon-molybdenum bricks, the preheating mechanism is installed on the tunnel kiln and preheats the silicon-molybdenum bricks with gas after drying, and the cooling mechanism is installed on the heating mechanism and accelerates the cooling of the silicon-molybdenum bricks; the traction mechanism tractions the silicon-molybdenum bricks and transports them forward in the tunnel kiln, the heating mechanism is started, the heating mechanism ignites and releases heat to dry the silicon-molybdenum bricks in the tunnel kiln, the preheating mechanism cooperates with the heating mechanism to accelerate the flow of hot air in the tunnel kiln, quickly dries the silicon-molybdenum bricks, and at the same time transports the hot air to the front section of the tunnel kiln to preheat the silicon-molybdenum bricks that have just entered, and at the same time the cooling mechanism is started, and the cooling mechanism accelerates the cooling of the silicon-molybdenum bricks after drying.

[0007] Preferably, the tunnel kiln includes a kiln body, two sets of tracks, four sets of rollers and a mobile platform, the bottom end of the kiln body is connected to the ground, a cavity is arranged inside the kiln body, and a feed port and a discharge port are opened on the kiln body, the bottom ends of the two sets of tracks are connected to the bottom end of the cavity inside the kiln body, the four sets of rollers are rotatably installed on the two sets of tracks, and the bottom end of the mobile platform is connected to the top ends of the four sets of rollers; the silicon-molybdenum bricks are stacked on the mobile platform, and the traction mechanism pulls the mobile platform forward along the track, and the mobile platform moves smoothly on the track by setting four sets of rollers.

[0008] Preferably, the traction mechanism includes two groups of brackets, a motor, a rotating shaft and a steel wire rope, the two groups of brackets are respectively installed on two groups of rails, the motor is installed on the brackets, the rotating shaft is rotatably installed between the two groups of brackets, one end of the steel wire rope is fixedly installed on the rotating shaft, and the other end is fixedly installed on the mobile platform; start the motor, the motor drives the rotating shaft to rotate, the rotating shaft rotates to reel in the steel wire rope, and the steel wire rope pulls the mobile platform to move, so that the mobile platform moves toward the discharge port in the cavity of the kiln body.

[0009] Preferably, the heating mechanism includes an ignition box, a gas connecting pipe, a nozzle and a grille, the ignition box is installed on the kiln body and is connected to the inside of the cavity of the kiln body, the gas connecting pipe is installed on the ignition box, the nozzle is installed in the ignition box and is connected to the inside of the gas connecting pipe, and the grille is installed in the cavity of the kiln body; the gas connecting pipe is connected to the gas pipeline, the gas connecting pipe transports the gas to the nozzle, the nozzle ignites the gas to release heat, and the heat passes through the grille to dry the silica bricks.

[0010] Preferably, a refractory heat-insulating layer is attached to the inner wall of the ignition box; the refractory heat-insulating layer is radiated to prevent heat diffusion, reduce heat loss, and make all the heat available for drying the silica-molybdenum bricks through the grille.

[0011] Preferably, the preheating mechanism includes a support frame, an air pump 1, an air collecting hopper 1, an exhaust pipe, an air delivery pipe 1 and an air collecting pipe 2, the support frame is installed on the side wall of the kiln body, the bottom end of the air pump 1 is connected to the top of the support frame, the air collecting hopper 1 is installed on the side wall of the kiln body and communicates with the interior of the cavity of the kiln body, the exhaust pipe is installed on the air pump 1 and communicates with the interior of the air collecting hopper 1, the air delivery pipe 1 is installed on the air pump 1, and the air collecting pipe 2 is installed on the top of the kiln body and communicates with the interior of the cavity of the kiln body; start the air pump 1, and the air pump 1 extracts the hot air in the cavity of the kiln body through the exhaust pipe and the air collecting hopper 1, which accelerates the flow of heat in the cavity of the kiln body and improves the drying rate of the silicon molybdenum bricks, the air pump 1 conveys the hot air to the air collecting pipe 2 through the air delivery pipe 1, and the air collecting pipe 2 conveys the hot air to the feed inlet of the kiln body, and the silicon molybdenum bricks are preheated by using the residual heat in the air.

[0012] Preferably, the cooling mechanism includes two groups of exhaust fans, two groups of air collecting buckets three, an air pipe two, an air pump two and an air pipe three, the two groups of exhaust fans are installed in the cavity of the kiln body, the two groups of air collecting buckets three are respectively installed on the side walls of the kiln body and are connected with the inside of the cavity of the kiln body, the air pipe two is connected and installed on the two groups of air collecting buckets three, the bottom end of the air pump two is connected to the top of the ignition box, and the air pipe three is installed on the air pump two and is connected with the inside of the ignition box; start the two groups of exhaust fans, the exhaust fans take away the residual heat on the surface of the dried silica bricks by stirring the air flow, start the air pump two, the air pump two extracts the hot air in the two groups of air collecting buckets three through the air pipe two, and then transports it to the ignition box through the air pipe three, so that the heat in the ignition box is transported toward the grille.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the traction mechanism pulls the silicon-molybdenum bricks forward in the tunnel kiln, the heating mechanism is started, the heating mechanism ignites and releases heat to dry the silicon-molybdenum bricks in the tunnel kiln, the preheating mechanism cooperates with the heating mechanism to accelerate the flow of hot air in the tunnel kiln, quickly dries the silicon-molybdenum bricks, and at the same time transports the hot air to the front section of the tunnel kiln to preheat the silicon-molybdenum bricks that have just entered, and at the same time the cooling mechanism is started to accelerate the cooling of the dried silicon-molybdenum bricks. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the axonometric structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the axonometric structure of the utility model tunnel kiln;

[0016] Figure 3 It is a partially enlarged axonometric structural schematic diagram of the traction mechanism of the utility model;

[0017] Figure 4 It is a partially enlarged cross-sectional axonometric structural schematic diagram of the heating mechanism and preheating mechanism of the utility model;

[0018] Figure 5It is a partially enlarged axonometric structural schematic diagram of the cooling mechanism of the utility model.

[0019] Markings in the attached figure: 01, tunnel kiln; 11, kiln body; 12, track; 13, roller; 14, mobile platform; 02, traction mechanism; 21, bracket; 22, motor; 23, rotating shaft; 24, wire rope; 03, heating mechanism; 31, ignition box; 32, gas connecting pipe; 33, nozzle; 34, grille; 04, preheating mechanism; 41, support frame; 42, air pump one; 43, air collecting bucket one; 44, exhaust pipe; 45, gas supply pipe one; 46, air collecting bucket two; 05, cooling mechanism; 51, exhaust fan; 52, air collecting bucket three; 53, gas supply pipe two; 54, air pump two; 55, gas supply pipe three. DETAILED DESCRIPTION

[0020] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive. Example 1

[0021] The utility model discloses a composite special silicon-molybdenum brick firing tunnel kiln, comprising a tunnel kiln 01; further comprising a traction mechanism 02, a heating mechanism 03, a preheating mechanism 04 and a cooling mechanism 05, wherein the traction mechanism 02 is installed on the tunnel kiln 01 and tractions the silicon-molybdenum bricks, the heating mechanism 03 is installed on the traction mechanism 02 to dry the silicon-molybdenum bricks, the preheating mechanism 04 is installed on the tunnel kiln 01 to preheat the silicon-molybdenum bricks with the dried gas, and the cooling mechanism 05 is installed on the heating mechanism 03 and accelerates the cooling of the silicon-molybdenum bricks; the tunnel kiln 01 comprises a kiln body 11, two sets of tracks 12, and four sets of rollers. 13 and a mobile platform 14, the bottom end of the kiln body 11 is connected to the ground, a cavity is arranged inside the kiln body 11, and a feed port and a discharge port are opened on the kiln body 11, the bottom ends of the two sets of tracks 12 are connected to the bottom ends of the inside of the cavity of the kiln body 11, four sets of rollers 13 are rotatably mounted on the two sets of tracks 12, and the bottom end of the mobile platform 14 is connected to the top ends of the four sets of rollers 13; the traction mechanism 02 includes two sets of brackets 21, a motor 22, a rotating shaft 23 and a steel wire rope 24, the two sets of brackets 21 are respectively mounted on the two sets of tracks 12, the motor 22 is mounted on the bracket 21, and the rotating shaft 23 is rotatable. The kiln body 11 is movably installed between the two groups of brackets 21, one end of the steel wire rope 24 is fixedly installed on the rotating shaft 23, and the other end is fixedly installed on the mobile platform 14; the heating mechanism 03 includes an ignition box 31, a gas connecting pipe 32, a nozzle 33 and a grille 34, the ignition box 31 is installed on the kiln body 11 and is connected to the inside of the cavity of the kiln body 11, the gas connecting pipe 32 is installed on the ignition box 31, the nozzle 33 is installed in the ignition box 31 and is connected to the inside of the gas connecting pipe 32, and the grille 34 is installed in the cavity of the kiln body 11; it also includes a refractory heat-insulating coating on the inner wall of the ignition box 31 layer; the preheating mechanism 04 includes a support frame 41, an air pump 42, an air collecting bucket 43, an air extraction pipe 44, an air delivery pipe 45 and an air collecting pipe 2 46, the support frame 41 is installed on the side wall of the kiln body 11, the bottom end of the air pump 42 is connected to the top of the support frame 41, the air collecting bucket 43 is installed on the side wall of the kiln body 11 and communicates with the inside of the cavity of the kiln body 11, the air extraction pipe 44 is installed on the air pump 42 and communicates with the inside of the air collecting bucket 43, the air delivery pipe 45 is installed on the air pump 42, and the air collecting pipe 2 46 is installed on the top of the kiln body 11 and communicates with the inside of the cavity of the kiln body 11;When it is working, firstly, the silicon-molybdenum bricks are stacked on the mobile platform 14, and the motor 22 is started. The motor 22 drives the rotating shaft 23 to rotate. The rotating shaft 23 rotates to reel in the steel wire rope 24. The steel wire rope 24 pulls the mobile platform 14 to move, so that the mobile platform 14 moves to the discharge port in the cavity of the kiln body 11. The gas connecting pipe 32 is connected to the gas pipeline. The gas connecting pipe 32 transports the gas to the nozzle 33. The nozzle 33 ignites the gas to release heat, and the heat passes through the kiln body 11. The grid 34 dries the silicon-molybdenum bricks, and the air pump 1 42 is started. The air pump 1 42 extracts the hot air in the cavity of the kiln body 11 through the exhaust pipe 44 and the air collecting bucket 1 43, which accelerates the flow of heat in the cavity of the kiln body 11 and improves the drying rate of the silicon-molybdenum bricks. The air pump 1 42 transports the hot air to the air collecting pipe 2 46 through the air delivery pipe 1 45. The air collecting pipe 2 46 transports the hot air to the feed port of the kiln body 11, and uses the residual heat in the air to preheat the silicon-molybdenum bricks. ; Example 2

[0022] like Figures 1 to 5 As shown, a composite special silicon-molybdenum brick firing tunnel kiln of the utility model is based on Example 1; the cooling mechanism 05 includes two sets of exhaust fans 51, two sets of air collecting buckets 52, air delivery pipes 53, air pumps 54 and air delivery pipes 55, the two sets of exhaust fans 51 are installed in the cavity of the kiln body 11, the two sets of air collecting buckets 52 are respectively installed on the side walls of the kiln body 11 and communicate with the cavity of the kiln body 11, and the air delivery pipes 53 are installed on the two sets of air collecting buckets 52. , the bottom end of the air pump 2 54 is connected to the top end of the ignition box 31, and the gas pipe 3 55 is installed on the air pump 2 54 and communicated with the inside of the ignition box 31; when it is working, firstly, the silicon-molybdenum bricks are stacked on the mobile platform 14, and the motor 22 is started. The motor 22 drives the rotating shaft 23 to rotate, and the rotating shaft 23 rotates to reel the wire rope 24. The wire rope 24 pulls the mobile platform 14 to move, so that the mobile platform 14 moves toward the discharge port in the cavity of the kiln body 11, and the gas connecting pipe 32 is connected. The gas connection pipe 32 is connected to the gas pipeline, and the gas connection pipe 32 conveys the gas to the nozzle 33. The nozzle 33 ignites the gas to release heat, and the heat dries the silicon-molybdenum bricks through the grille 34. The air pump 42 is started, and the air pump 42 extracts the hot air in the cavity of the kiln body 11 through the exhaust pipe 44 and the gas collecting bucket 43, which accelerates the flow of heat in the cavity of the kiln body 11 and improves the drying rate of the silicon-molybdenum bricks. The air pump 42 conveys the hot air to the gas collecting pipe 2 46 through the gas transmission pipe 45 Inside, the air collecting pipe 2 46 transports the hot air to the feed port of the kiln body 11, and the heat remaining in the air is used to preheat the silica bricks. The two sets of exhaust fans 51 are started, and the exhaust fans 51 take away the residual heat on the surface of the dried silica bricks by stirring the air flow. The air pump 2 54 is started, and the air pump 2 54 extracts the hot air in the two sets of air collecting buckets 3 52 through the air delivery pipe 2 53, and then transports it to the ignition box 31 through the air delivery pipe 3 55, so that the heat in the ignition box 31 is transported toward the grille 34.

[0023] The electric motor 22, air pump 1 42 and air pump 2 54 of the utility model are purchased on the market, and technicians in the industry only need to install and operate them according to the accompanying instruction manuals, without the need for creative work by technicians in the field.

[0024] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A tunnel kiln for firing composite special silica-molybdenum bricks, comprising a tunnel kiln (01); characterized in that: The invention also comprises a traction mechanism (02), a heating mechanism (03), a preheating mechanism (04) and a cooling mechanism (05). The traction mechanism (02) is installed on the tunnel kiln (01) and pulls the silica-molybdenum bricks. The heating mechanism (03) is installed on the traction mechanism (02) and dries the silica-molybdenum bricks. The preheating mechanism (04) is installed on the tunnel kiln (01) and preheats the silica-molybdenum bricks with the dried gas. The cooling mechanism (05) is installed on the heating mechanism (03) and accelerates the cooling of the silica-molybdenum bricks.

2. A composite special silica-molybdenum brick firing tunnel kiln as claimed in claim 1, characterized in that: The tunnel kiln (01) comprises a kiln body (11), two sets of tracks (12), four sets of rollers (13) and a moving platform (14). The bottom end of the kiln body (11) is connected to the ground. A cavity is arranged inside the kiln body (11). A feeding port and a discharging port are provided on the kiln body (11). The bottom ends of the two sets of tracks (12) are connected to the bottom ends of the cavity inside the kiln body (11). The four sets of rollers (13) are rotatably mounted on the two sets of tracks (12). The bottom end of the moving platform (14) is connected to the top ends of the four sets of rollers (13).

3. A composite special silica-molybdenum brick firing tunnel kiln as claimed in claim 2, characterized in that: The traction mechanism (02) comprises two sets of brackets (21), a motor (22), a rotating shaft (23) and a steel wire rope (24); the two sets of brackets (21) are respectively mounted on two sets of rails (12); the motor (22) is mounted on the brackets (21); the rotating shaft (23) is rotatably mounted between the two sets of brackets (21); one end of the steel wire rope (24) is fixedly mounted on the rotating shaft (23) and the other end is fixedly mounted on the moving platform (14).

4. A composite special silica-molybdenum brick firing tunnel kiln as claimed in claim 2, characterized in that: The heating mechanism (03) comprises an ignition box (31), a gas connection pipe (32), a nozzle (33) and a grille (34); the ignition box (31) is mounted on the kiln body (11) and is in communication with the interior of the cavity of the kiln body (11); the gas connection pipe (32) is mounted on the ignition box (31); the nozzle (33) is mounted in the ignition box (31) and is in communication with the interior of the gas connection pipe (32); and the grille (34) is mounted in the interior of the cavity of the kiln body (11).

5. A composite special silica-molybdenum brick firing tunnel kiln as claimed in claim 4, characterized in that: The ignition box (31) also includes an inner wall on which a fire-resistant heat-insulating layer is applied.

6. A composite special silica-molybdenum brick firing tunnel kiln as claimed in claim 2, characterized in that: The preheating mechanism (04) comprises a support frame (41), an air pump (42), an air collecting hopper (43), an air extraction pipe (44), an air delivery pipe (45) and an air collecting pipe (46). The support frame (41) is mounted on the side wall of the kiln body (11), the bottom end of the air pump (42) is connected to the top end of the support frame (41), the air collecting hopper (43) is mounted on the side wall of the kiln body (11) and communicates with the interior of the cavity of the kiln body (11), the air extraction pipe (44) is mounted on the air pump (42) and communicates with the interior of the air collecting hopper (43), the air delivery pipe (45) is mounted on the air pump (42), and the air collecting pipe (46) is mounted on the top end of the kiln body (11) and communicates with the interior of the cavity of the kiln body (11).

7. A composite special silica-molybdenum brick firing tunnel kiln as claimed in claim 4, characterized in that: The cooling mechanism (05) comprises two sets of exhaust fans (51), two sets of air collecting buckets (52), an air delivery pipe (53), an air pump (54) and an air delivery pipe (55). The two sets of exhaust fans (51) are installed in the cavity of the kiln body (11). The two sets of air collecting buckets (52) are installed on the side walls of the kiln body (11) and are connected to the cavity of the kiln body (11). The air delivery pipe (53) is installed on the two sets of air collecting buckets (52). The bottom end of the air pump (54) is connected to the top end of the ignition box (31). The air delivery pipe (55) is installed on the air pump (54) and is connected to the inside of the ignition box (31).

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