High-efficiency high-temperature hot blast stove

Abstract

The utility model relates to the technical field of hot-blast stoves, and discloses a high-efficiency high-temperature hot-blast stove which comprises a hot box shell, a heat exchange mechanism is fixedly arranged in the hot box shell, the top end of the heat exchange mechanism is fixedly connected with an air blowing mechanism, the air blowing mechanism comprises an air blower, and one end of the air blower is fixedly connected with an air supply pipe. A connecting pipe is fixedly connected to one side of the surface of the air supply pipe, the heat exchange mechanism comprises a water tank and a heat conduction box, a water outlet pipe is fixedly arranged at the bottom end of one side of the water tank, a smoke inlet is formed in the bottom end of the heat conduction box, a combustion box is fixedly arranged at the bottom end of the hot box shell, and a hot air box is fixedly arranged on one side of the hot box shell; and a slag discharging box is fixedly arranged at the bottom end of the combustion box. According to the hot blast stove, the heat exchange mechanism and the hot air box are arranged, the working efficiency of the hot blast stove is improved, the air blowing mechanism and the slag discharging box are arranged, the combustion temperature and efficiency of the hot blast stove are effectively improved, and residues are convenient to clean.

Description

Technical Field

[0001] This utility model relates to the field of hot blast stove technology, and in particular to a high-efficiency high-temperature hot blast stove. Background Technology

[0002] Hot blast stoves are crucial auxiliary equipment in blast furnace ironmaking. They are intermittently heated, periodically operating thermal devices. Increasing blast temperature is essential for safe blast furnace operation, energy conservation, reduced production costs, and decreased harmful gas emissions. Hot blast stoves play a vital role in the ironmaking process. They not only improve ironmaking efficiency but also optimize energy utilization, enhance product quality, reduce production costs, increase production flexibility, support technological innovation, and ensure production safety.

[0003] Existing hot blast stoves all use a small pre-combustion chamber bowling dome structure. Due to problems in the structure and manufacturing method, especially because the dome is too small, the gas and air are premixed in a stratified manner for long-flame combustion. The flue gas outlet diameter is also too small, forming a vortex. This results in very uneven distribution of flue gas, often leading to poor mixing of gas and air in the hot blast stove and uneven airflow distribution. This results in incomplete or unstable combustion, low combustion efficiency, and the cold air blown in by the blower will lower the temperature in the combustion chamber.

[0004] Therefore, those skilled in the art have provided a high-efficiency high-temperature hot blast furnace to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a high-efficiency high-temperature hot blast stove. It is equipped with a heat exchange mechanism and a hot blast box, which improves the working efficiency of the hot blast stove. By equipping it with a blower mechanism and a slag discharge box, the combustion temperature and efficiency of the hot blast stove are effectively improved, and the slag is easy to clean.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A high-efficiency high-temperature hot air furnace includes a hot box shell, a heat exchange mechanism is fixedly installed inside the hot box shell, a blower mechanism is fixedly connected to the top of the heat exchange mechanism, the blower mechanism includes a blower, an air supply pipe is fixedly connected to one end of the blower, and a connecting pipe is fixedly connected to one side of the surface of the air supply pipe.

[0008] The heat exchange mechanism includes a water tank and a heat conduction box. A water outlet pipe is fixedly installed at the bottom of one side of the water tank, and a flue gas inlet is opened at the bottom of the heat conduction box.

[0009] Furthermore, a combustion box is fixedly installed at the bottom of the hot box shell, a hot air box is fixedly installed on one side of the hot box shell, and a slag discharge box is fixedly installed at the bottom of the combustion box.

[0010] Furthermore, a slag discharge box is slidably connected inside the slag discharge box, and a handle is fixedly provided at one end of the slag discharge box.

[0011] Furthermore, an air inlet is provided on one side of the hot air box, an air outlet is provided at the top of the hot air box, an insulation layer is fixedly provided on one side of the inside of the hot air box, and a heat-conducting plate is fixedly provided on one side of the inside of the hot air box.

[0012] Furthermore, a feed inlet is provided on one side of the surface of the combustion chamber, a heat-insulating plate is fixedly installed inside the combustion chamber, and a strainer is fixedly installed at the bottom of the combustion chamber.

[0013] Furthermore, a water inlet pipe is fixedly installed on one side of the top of the water tank, and an air outlet pipe is fixedly installed in the middle of the top of the water tank.

[0014] Furthermore, a smoke outlet is provided at the center of the top of the heat-conducting box, and a heat-conducting rod is fixedly installed on one side of the water tank.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model proposes a high-efficiency high-temperature hot blast stove, which is equipped with a heat exchange mechanism and a hot blast box. When the hot blast stove is in operation, water is poured into the water tank through the water inlet pipe, and coal is poured into the combustion box through the feed inlet for combustion. Combustion is assisted by a blower. The heat generated after combustion is transferred to the heat-conducting plate, and cold air is blown in through the air inlet. After the cold air enters the hot blast box, it is heated by the high temperature of the heat-conducting plate and becomes hot air. The insulation layer makes the temperature of the hot air drop slowly, and then it goes out through the air outlet. The smoke generated by combustion enters the heat-conducting box. The temperature of the smoke is transferred to the water tank through the heat-conducting rod. The temperature in the water tank gradually increases, and the smoke after heat conduction drifts out from the smoke outlet. The hot air generated by the increased water temperature in the water tank drifts into the air outlet pipe, which effectively improves the working efficiency of the hot blast stove.

[0017] 2. The present invention proposes a high-efficiency high-temperature hot blast stove, which is equipped with a blower mechanism and a slag discharge box. The air outlet pipe is connected to the blower mechanism. Hot air flows from the air outlet pipe through the connecting pipe to the air supply pipe, and then heats the air generated by the blower, so that the temperature of the coal will not drop when it is blown onto it. The slag from the burned coal falls into the slag discharge box through the sieve plate. After the work is completed, the slag discharge box can be removed by the handle for cleaning. This effectively improves the combustion temperature and efficiency of the hot blast stove and facilitates the cleaning of slag. Attached Figure Description

[0018] Figure 1 This is an axonometric view of the present invention;

[0019] Figure 2 This is a rear-view axle-side schematic diagram of the present invention;

[0020] Figure 3 This is a front sectional view of the present invention;

[0021] Figure 4 This is a schematic diagram of the blower mechanism of this utility model from the side.

[0022] Figure 5 This is a side view of the heat exchange mechanism of this utility model.

[0023] Legend:

[0024] 1. Slag discharge box; 2. Blower mechanism; 3. Hot air box; 4. Hot box shell; 5. Feed inlet; 6. Combustion box; 7. Slag discharge box; 8. Handle; 9. Air inlet; 10. Strain plate; 11. Insulation layer; 12. Air outlet; 13. Heat exchange mechanism; 14. Heat conduction plate; 15. Heat insulation plate; 201. Blower; 202. Air supply pipe; 203. Connecting pipe; 1301. Water outlet pipe; 1302. Water tank; 1303. Water inlet pipe; 1304. Air outlet pipe; 1305. Smoke outlet; 1306. Heat conduction rod; 1307. Heat conduction box; 1308. Smoke inlet. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Reference Figure 1 , Figure 2 , Figure 3 One embodiment provided by this utility model:

[0027] A high-efficiency high-temperature hot air furnace includes a hot box shell 4, a heat exchange mechanism 13 fixedly installed inside the hot box shell 4, a blower mechanism 2 fixedly connected to the top of the heat exchange mechanism 13, a combustion box 6 fixedly installed at the bottom of the hot box shell 4, a hot air box 3 fixedly installed on one side of the hot box shell 4, a slag discharge box 1 fixedly installed at the bottom of the combustion box 6, a slag discharge tray 7 slidably connected inside the slag discharge box 1, a handle 8 fixedly installed at one end of the slag discharge tray 7, an air inlet 9 opened on one side of the hot air box 3, an air outlet 12 opened at the top of the hot air box 3, a heat insulation layer 11 fixedly installed on one side of the inside of the hot air box 3, a heat conduction plate 14 fixedly installed on one side of the inside of the hot air box 3, a feed inlet 5 opened on one side of the surface of the combustion box 6, a heat insulation plate 15 fixedly installed inside the combustion box 6, and a strainer plate 10 fixedly installed at the bottom of the combustion box 6.

[0028] Specifically, a heat exchange mechanism 13 is fixedly installed inside the outer shell 4 of the hot box to facilitate the entry of smoke generated after combustion. The blower mechanism 2 is used to guide the hot air generated by the heat exchange mechanism 13 into the combustion box 6 and assist combustion. The hot air box 3 is used to store cold air. The slag box 7 is used to collect the slag generated after combustion. The handle 8 is used to facilitate the removal of the slag box 7. The air inlet 9 is used to facilitate the entry of cold air into the hot air box 3. The air outlet 12 is used to facilitate the discharge of hot air. The insulation layer 11 is used to keep the hot air warm. The heat conduction plate 14 is used to transfer the temperature generated by combustion in the combustion box 6. The feed inlet 5 is used to facilitate the feeding of coal. The heat insulation plate 15 is used to prevent heat loss. The slag discharge plate 10 is used to facilitate the falling of the slag after combustion into the slag box 7.

[0029] Reference Figure 4 The blower mechanism 2 includes a blower 201, one end of which is fixedly connected to an air supply pipe 202, and a connecting pipe 203 is fixedly connected to one side of the surface of the air supply pipe 202.

[0030] Specifically, the blower 201 is used to assist the combustion of coal, and the air supply pipe 202 is used to neutralize the hot air coming out of the connecting pipe 203 and the cold air blown by the blower 201, thereby increasing the temperature and helping to improve the combustion temperature and efficiency.

[0031] Reference Figure 5 The heat exchange mechanism 13 includes a water tank 1302 and a heat transfer box 1307. A water outlet pipe 1301 is fixedly installed at the bottom of one side of the water tank 1302, a water inlet pipe 1303 is fixedly installed at one side of the top of the water tank 1302, an air outlet pipe 1304 is fixedly installed at the middle of the top of the water tank 1302, a smoke inlet 1308 is opened at the bottom of the heat transfer box 1307, a smoke outlet 1305 is opened at the middle of the top of the heat transfer box 1307, and a heat transfer rod 1306 is fixedly installed on one side of the water tank 1302.

[0032] Specifically, the water tank 1302 is used to hold water, allowing the heat-conducting rod 1306 to conduct heat and heat the water. The water outlet pipe 1301 is used to discharge wastewater. The water inlet pipe 1303 is used to conveniently pour in cold water. The air outlet pipe 1304 is used to conveniently allow the heat generated after the water in the water tank 1302 is heated to flow out. The smoke inlet 1308 is used to conveniently allow the smoke generated by combustion to enter the heat-conducting box 1307. The smoke outlet 1305 is used to discharge the smoke that has absorbed heat. The heat-conducting rod 1306 is used to absorb the temperature of the hot smoke and pour it into the water tank 1302.

[0033] Working principle: When the hot blast stove is running, water is poured into the water tank 1302 through the water inlet pipe 1303. Coal is poured into the combustion box 6 through the feed inlet 5 for combustion, and the blower 201 assists the combustion. The heat generated after combustion is transferred to the heat conduction plate 14. Cold air is blown in through the air inlet 9. After entering the hot blast box 3, the cold air is heated by the high temperature of the heat conduction plate 14 and becomes hot air. The insulation layer 11 makes the temperature of the hot air decrease slowly. Then it goes out through the air outlet 12. The smoke generated by combustion enters the heat conduction box 1307. The temperature of the smoke is transferred to the water tank 1302 through the heat conduction rod 1306. The temperature in the water tank 1302 gradually increases. The smoke after heat conduction floats out from the smoke outlet 1305. The hot air generated by the increased water temperature in the water tank 1302 floats into the air outlet pipe 1304, which effectively improves the working efficiency of the hot blast stove.

[0034] Secondly, the air outlet pipe 1304 is connected to the blower mechanism 2. Hot air from the air outlet pipe 1304 reaches the air supply pipe 202 through the connecting pipe 203, and then heats the air generated by the blower 201, so that the temperature inside the combustion box 6 will not drop after being blown onto the coal. The slag from the burned coal falls into the slag box 7 through the sluice plate 10. After the work is finished, the slag box 7 can be taken out by the handle 8 for cleaning. This effectively improves the combustion temperature and efficiency of the hot air furnace and facilitates the cleaning of residue.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency high-temperature hot air furnace, comprising a hot box shell (4), characterized in that: A heat exchange mechanism (13) is fixedly installed inside the outer shell (4) of the heat box. A blower mechanism (2) is fixedly connected to the top of the heat exchange mechanism (13). The blower mechanism (2) includes a blower (201). One end of the blower (201) is fixedly connected to an air supply pipe (202). A connecting pipe (203) is fixedly connected to one side of the surface of the air supply pipe (202). The heat exchange mechanism (13) includes a water tank (1302) and a heat conduction box (1307). A water outlet pipe (1301) is fixedly installed at the bottom of one side of the water tank (1302), and a flue gas inlet (1308) is opened at the bottom of the heat conduction box (1307).

2. The high-efficiency high-temperature hot blast stove according to claim 1, characterized in that: A combustion box (6) is fixedly installed at the bottom of the outer shell (4) of the hot box, a hot air box (3) is fixedly installed on one side of the outer shell (4), and a slag discharge box (1) is fixedly installed at the bottom of the combustion box (6).

3. A high-efficiency high-temperature hot blast stove according to claim 2, characterized in that: The slag discharge box (1) is slidably connected to the inside of the slag discharge box (7), and a handle (8) is fixedly provided at one end of the slag discharge box (7).

4. A high-efficiency high-temperature hot blast stove according to claim 2, characterized in that: The hot air box (3) has an air inlet (9) on one side and an air outlet (12) on the top of the hot air box (3). An insulation layer (11) is fixedly installed on one side inside the hot air box (3), and a heat-conducting plate (14) is fixedly installed on one side inside the hot air box (3).

5. A high-efficiency high-temperature hot blast stove according to claim 2, characterized in that: The combustion chamber (6) has a feed inlet (5) on one side of its surface, a heat-insulating plate (15) is fixedly installed inside the combustion chamber (6), and a drain plate (10) is fixedly installed at the bottom of the combustion chamber (6).

6. A high-efficiency high-temperature hot blast stove according to claim 1, characterized in that: A water inlet pipe (1303) is fixedly installed on one side of the top of the water tank (1302), and an air outlet pipe (1304) is fixedly installed in the middle of the top of the water tank (1302).

7. A high-efficiency high-temperature hot blast stove according to claim 1, characterized in that: The heat-conducting box (1307) has a smoke outlet (1305) in the middle of its top, and a heat-conducting rod (1306) is fixedly installed on one side of the water tank (1302).

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