Novel hot blast stove

Abstract

The utility model relates to the technical field of hot blast stoves, and discloses a novel hot blast stove. According to the novel hot blast stove, an inner cavity assembly is connected and installed in a shell assembly, a heat preservation shell is installed at the upper end of the inner cavity assembly, an inner cylinder is installed in the heat preservation shell, heat transfer fins are connected and installed in the inner cylinder, connecting rods are installed on the inner sides of the heat transfer fins, and rotating pieces are installed at the upper ends of the connecting rods; a timing conveying assembly is installed on the right side of the upper end of the shell assembly, a containing groove is formed in the upper end of the timing conveying assembly, a valve is installed at the lower end of the containing groove, a fixing frame is fixed to the upper end of the containing groove, a controller is installed at the upper end of the fixing frame, and a timer is installed at the lower end of the controller. The problem that the follow-up furnace temperature tends to slide down due to the fact that the hot blast stove is used during air supply of the blast furnace and the hot blast stove is stuffy for a long time during damping down and then the air temperature is lower than the normal level after reblowing is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of hot blast stoves, in particular to a novel hot blast stove. Background Art

[0002] In the past decade, my country's steel industry has developed rapidly. Large blast furnaces have been built in batches and the equipment level has been greatly improved. my country's technology for quickly restoring furnace conditions after a short-term shutdown has entered the ranks of the world's advanced countries. Due to the sluggish steel market, blast furnace production has been adjusted according to market changes. The frequency of shutdown and air supply to restore furnace conditions has increased, shortening the time for restoring furnace conditions and reducing the cost of restoring furnace conditions. Blast furnaces use hot blast furnaces when supplying air.

[0003] The existing Chinese utility model patent with reference announcement number CN102313353A discloses a new type of hot blast furnace, including a furnace body with a fuel adding door and a temperature controller, a mezzanine is arranged in the furnace body, a heat sink is arranged in the mezzanine, a grate is arranged below the furnace body, an ash chamber is arranged below the grate, an ash door is arranged on the ash chamber, a hot blast outlet is arranged on the upper part of the furnace body, an air inlet is arranged at the lower part of the furnace body, a blower is arranged on the air inlet, the blower is connected to the motor, and the motor is connected to the temperature controller through a wire; the fuel adding door is arranged at the front part of the furnace body, a water tank with a chimney is arranged on the top of the furnace body, and the lower end of the chimney is connected to the furnace of the furnace body; a steam pipe connected to the hot blast outlet is arranged on the water tank, and a water inlet and a water nozzle are arranged on the water tank; the inner wall of the furnace is provided with a stainless steel protective layer, and the periphery of the grate is provided with a refractory cement sand lining fixedly connected to the inner wall of the furnace; an air inlet pipe connected to the ash chamber is arranged on the air inlet, and a gate valve is arranged on the air inlet pipe. The invention solves the technical problems in the prior art such as inconvenience in adding fuel, waste of heat energy, environmental pollution, short service life, poor grate stability, inability to force air into the ash chamber for combustion assistance and inability to humidify the breeding greenhouse.

[0004] Based on the search of the above patents and in combination with the equipment in the prior art, it was found that due to the sluggish steel market, blast furnace production has been adjusted with market changes, and the frequency of shutting down and supplying air to restore furnace conditions has increased, shortening the recovery time of furnace conditions and reducing the cost of restoring furnace conditions. The blast furnace uses a hot blast furnace when supplying air. During the shut-down period, the hot blast furnace is kept in a state of stuffiness for a long time, resulting in a lower air temperature after the restoration of air than the normal level, causing the subsequent furnace temperature to show a downward trend. When the hot blast furnace is in use, the internal temperature rises slowly, resulting in a longer subsequent transportation time, and after the hot blast furnace is shut down, the internal temperature tends to drop rapidly. The existence of these problems affects the use of the device. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a new type of hot blast furnace, which can effectively prevent the blast furnace from using the hot blast furnace when supplying air. During the wind-off period, the hot blast furnace is kept in a state of stuffiness for a long time, resulting in the wind temperature being lower than the normal level after the wind is resumed, causing the subsequent furnace temperature to show a downward trend.

[0007] Technical Solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a new type of hot blast furnace, including an outer shell component, the inner part of the outer shell component is connected and installed with an inner cavity component which is convenient for quickly conveying hot air and is used in combination with an outer end shell through an internally installed insulation shell, and the upper right side of the outer shell component is connected and installed with a timing conveying component which is convenient for timed conveying of coal.

[0009] The upper end of the inner cavity component is installed with a heat-insulating shell, and the inner part of the heat-insulating shell is installed with an inner cylinder, the inner part of the inner cylinder is connected and installed with heat transfer fins, and the inner side of the heat transfer fins is installed with a connecting rod, and the upper end of the connecting rod is installed with a rotating piece, and the connecting rod is used in combination with the rotating piece, and the rotating piece is driven by hot air to quickly transport the hot air;

[0010] A placement slot is installed at the upper end of the timing conveying component, a valve is installed at the lower end of the placement slot, a fixing frame is fixed at the upper end of the placement slot, a controller is installed at the upper end of the fixing frame, a timer is installed at the lower end of the controller, and the timer is used in conjunction with the controller. The timer is used to arrange the hot air furnace for burning operation in advance about 1.5 hours before the expected air supply time.

[0011] As a preferred technical solution of the utility model, an outer end shell is installed on the upper end of the outer shell assembly, and an exhaust pipe is installed on the upper end of the outer end shell, a support ring is installed inside the outer end shell, a hot air pipe is installed on the left side of the upper end of the outer end shell, and the lower end of the hot air pipe is connected to an air intake pipe, a blower is installed at the lower end of the air intake pipe, and the blower is installed at the lower end of the air intake pipe. The air inside the combustion chamber is increased by the blower to facilitate the subsequent full combustion of the coal inside the hot blast furnace.

[0012] As a preferred technical solution of the utility model, a combustion chamber is installed inside the inner cavity component, and the combustion chamber is installed at the lower end of the inner tube to facilitate the subsequent combustion of coal to generate hot gas.

[0013] As a preferred technical solution of the utility model, a conveying pipe is installed at the upper end of the timing conveying assembly, and the conveying pipe conveys the coal. The conveying pipe is installed on the upper right side of the outer end shell to facilitate the subsequent transportation of the coal to the inside of the outer end shell.

[0014] As a preferred technical solution of the utility model, the inner cavity component is installed inside the outer end shell of the outer shell component, and the timing conveying component is installed on the upper right side of the outer end shell of the outer shell component.

[0015] As a preferred technical solution of the utility model, the hot air pipe has the same structure as the air inlet pipe, the number of the support rings is four, and a constant temperature ceramic layer is installed between the outer end shell and the insulation shell.

[0016] As a preferred technical solution of the utility model, thermal insulation putty is placed between the thermal insulation shell and the inner tube, the upper end of the heat transfer fin is an upwardly inclined structure, and the rotating sheet is automatically rotated by the hot air flow.

[0017] As a preferred technical solution of the utility model, the delivery pipe is installed on the upper right side of the outer end shell, and the delivery pipe is a curved pipe structure, and the structure of the placement groove is wide at the top and narrow at the bottom.

[0018] Compared with the prior art, the utility model provides a new type of hot air furnace with the following beneficial effects:

[0019] 1. The utility model arranges an inner cavity component, wherein an insulation shell is installed in the inner cavity component, the insulation shell is installed inside the outer end shell, a support ring is installed inside the outer end shell, a constant temperature ceramic layer is installed between the outer end shell and the insulation shell, so as to subsequently insulate the residual temperature inside the inner cylinder, insulation putty is installed between the insulation shell and the inner cylinder, and the temperature is further insulated by the insulation putty, heat transfer fins are installed inside the inner cylinder, and the temperature is transported by the heat transfer fins, a connecting rod is installed at the upper end, a rotating piece is installed at the upper end of the connecting rod, and the rotating piece is driven to rotate by hot air, so as to subsequently combine with the heat transfer fins, and quickly transmit the hot air inside the hot blast stove, effectively preventing the internal temperature from rising slowly when the hot blast stove is in use, resulting in a long subsequent transport time, and the internal temperature is easy to drop quickly after the hot blast stove is stopped.

[0020] 2. The utility model sets a timing conveying component, in which a conveying pipe is installed, the conveying pipe conveys fuel, a placement groove is installed on the upper end, the fuel is placed in the placement groove, a fixing frame is fixed on the upper end, the upper end of the fixing frame is connected with a controller, and the lower end valve is controlled by the controller to facilitate the subsequent timing of coal delivery, and a timer is installed on the upper end of the controller. The timer arranges the hot blast furnace to perform furnace burning operation about 1.5 hours before the expected air supply time to ensure that the wind temperature level after air supply does not drop too much. The hot blast furnace is burned in advance, and the wind temperature can be reduced by about 15kg / t for every 100℃ increase in temperature, which effectively prevents the blast furnace from using the hot blast furnace when supplying air. During the wind-off period, the hot blast furnace is stuffy for a long time, resulting in a lower wind temperature than the normal level after the wind is resumed, causing the subsequent furnace temperature to show a downward trend. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the structural housing assembly of the utility model;

[0023] Figure 3 This is a schematic diagram of the inner cavity component of the structure of the utility model;

[0024] Figure 4 This is a schematic diagram of the timing conveying component of the utility model structure.

[0025] Among them: 1. Shell assembly; 101. Outer end shell; 102. Exhaust pipe; 103. Support ring; 104. Hot air pipe; 105. Inlet pipe; 106. Blower; 2. Inner cavity assembly; 201. Insulation shell; 202. Inner cylinder; 203. Combustion chamber; 204. Heat transfer fins; 205. Connecting rod; 206. Rotating sheet; 3. Timing delivery assembly; 301. Delivery pipe; 302. Placement slot; 303. Valve; 304. Fixing frame; 305. Controller; 306. Timer. DETAILED DESCRIPTION

[0026] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0027] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] See also Figure 1 - Figure 4 In the present embodiment, a novel hot blast stove comprises: a shell component 1, an inner cavity component 2 is connected and installed inside the shell component 1, an insulation shell 201 is installed on the upper end of the inner cavity component 2, and an inner tube 202 is installed inside the insulation shell 201, a heat transfer fin 204 is connected and installed inside the inner tube 202, and a connecting rod 205 is installed on the inner side of the heat transfer fin 204, and a rotating piece 206 is installed on the upper end of the connecting rod 205, a timing conveying component 3 is installed on the right side of the upper end of the shell component 1, a placement groove 302 is installed on the upper end of the timing conveying component 3, a valve 303 is installed on the lower end of the placement groove 302, a fixing frame 304 is fixed on the upper end of the placement groove 302, and a controller 305 is installed on the upper end of the fixing frame 304, and a timer 306 is installed on the lower end of the controller 305, the inner cavity component 2 is installed inside the outer end shell 101 in the shell component 1, and the timing conveying component 3 is installed on the right side of the upper end of the outer end shell 101 in the shell component 1.

[0030] Through the above structure; the outer shell component 1 is convenient for installing the internal structure, and the hot air generated inside the device is transported through the hot air pipe 104, which is convenient for subsequent use. The inner cavity component 2 is convenient for quickly transporting the hot air, and is used in combination with the outer end shell 101 through the internally installed insulation shell 201. A constant temperature ceramic layer is installed between the outer end shell 101 and the insulation shell 201, which is convenient for subsequently insulating the internal temperature of the device. The timed conveying component 3 is convenient for timed conveying of coal, and the controller 305 is started through the timer 306. About 1.5 hours before the expected air supply time, the hot air furnace is arranged in advance for burning operation to ensure that the wind temperature level after air supply does not drop too much.

[0031] See also Figure 1 - Figure 4 An outer end shell 101 is installed at the upper end of the outer shell assembly 1, and an exhaust pipe 102 is installed at the upper end of the outer end shell 101, a support ring 103 is installed inside the outer end shell 101, a hot air pipe 104 is installed on the left side of the upper end of the outer end shell 101, and the lower end of the hot air pipe 104 is connected to an air intake pipe 105, and a blower 106 is installed at the lower end of the air intake pipe 105. The hot air pipe 104 has the same structure as the air intake pipe 105, there are four support rings 103, and a constant temperature ceramic layer is installed between the outer end shell 101 and the insulation shell 201.

[0032] Through the above structure: the internal structure is installed and connected by installing the outer end shell 101, a constant temperature ceramic layer is installed between the outer end shell 101 and the insulation shell 201, which is convenient for the subsequent insulation treatment of the temperature inside the hot blast furnace, the exhaust pipe 102 is installed at the upper end of the outer end shell 101, and a filter plate is installed inside the exhaust pipe 102, which is convenient for the subsequent discharge of gas, the support ring 103 is installed inside the outer end shell 101, which is convenient for the subsequent installation and connection of the constant temperature ceramic layer, the hot air pipe 104 is installed on the left side of the upper end of the outer end shell 101, and the hot air generated inside the hot blast furnace is transported and discharged through the hot air pipe 104, the air inlet pipe 105 is installed at the lower end of the hot air pipe 104, and the cold air is transported to the inside of the combustion chamber 203 through the air inlet pipe 105, and the blower 106 is installed at the lower end of the air inlet pipe 105, and the air inside the combustion chamber 203 is increased by the blower 106, which is convenient for the subsequent full combustion of the coal inside the hot blast furnace.

[0033] See also Figure 1 - Figure 4 A combustion chamber 203 is installed inside the inner cavity component 2, and insulation putty is placed between the insulation shell 201 and the inner cylinder 202. The upper end of the heat transfer fin 204 is an upwardly inclined structure, and the rotating piece 206 is automatically rotated by the hot air flow.

[0034] Through the above structure: the inner tube 202 inside is connected and installed by installing the insulation shell 201, and insulation putty is installed between the insulation shell 201 and the inner tube 202, and the inside of the hot air furnace is further insulated by the insulation putty, the inner tube 202 is installed inside the insulation shell 201, and the hot air is stored and transported through the inner tube 202, the combustion chamber 203 is installed at the lower end of the inner tube 202, which is convenient for the subsequent combustion of coal to generate hot air, the heat transfer fin 204 is installed at the upper end of the inner wall of the inner tube 202, and the upper end structure of the heat transfer fin 204 is an upward inclined structure, which is convenient for the subsequent rapid transmission of hot air upward, the connecting rod 205 is used in conjunction with the rotating plate 206, and the rotating plate 206 is driven by the hot air to quickly transport the hot air.

[0035] See also Figure 1 - Figure 4 A conveying pipe 301 is installed at the upper end of the timing conveying component 3. The conveying pipe 301 is installed on the upper right side of the outer end shell 101, and the conveying pipe 301 is a curved pipe structure. The structure of the placement groove 302 is wide at the top and narrow at the bottom.

[0036] Through the above structure: coal is transported by installing the conveying pipe 301, and the conveying pipe 301 is installed on the upper right side of the outer end shell 101, so as to facilitate the subsequent conveying of coal to the inside of the outer end shell 101, the placement groove 302 is installed at the upper end of the conveying pipe 301, and the coal is placed through the placement groove 302, the valve 303 is installed at the lower end of the placement groove 302, and the valve 303 is started by the controller 305, so as to facilitate the subsequent discharge of the coal, the fixing frame 304 is installed at the upper end of the placement groove 302, and the placement groove 302 is installed to the upper end of the hot blast furnace through the fixing frame 304, so as to facilitate the subsequent fixing of the placement groove 302, the controller 305 controls the start of the upper structure of the device, the timer 306 is used in combination with the controller 305, and the hot blast furnace is arranged to be fired about 1.5 hours before the expected air supply time through the timer 306 to ensure that the wind temperature level after the air supply does not drop too much, and the hot blast furnace is fired in advance, and the wind temperature can be reduced by about 15kg / t for every 100℃ increase in temperature.

[0037] When in use, first, in order to reduce the waste of resources, a heat preservation structure is added to the upper end of the hot blast furnace, a heat preservation shell 201 is installed inside the outer end shell 101, a constant temperature ceramic layer is installed between the outer end shell 101 and the heat preservation shell 201, and the outside of the hot blast furnace is insulated by the constant temperature ceramic layer, an inner cylinder 202 is installed inside the heat preservation shell 201, and the inside of the inner cylinder 202 is used, and heat preservation clay is installed between the heat preservation shell 201 and the inner cylinder 202, and the inner cylinder 202 is insulated by the heat preservation clay. The upper end of 02 is fully insulated to facilitate subsequent insulation protection of the overall temperature of the hot blast stove and reduce the heat loss of the hot blast stove. The coal is placed in the placement tank 302 for storage. The coal is transported to the inner tube 202 of the hot blast stove through the conveying pipe 301. The inner tube 202 is equipped with a combustion chamber 203. The coal is transported to the combustion chamber 203 for combustion. The wind force 1 is transported by the blower 106 to accelerate the combustion speed inside the combustion chamber 203. A hot air pipe 104 and an air inlet pipe 105 are installed at the upper end of the shell 101. The gas is transported through the air inlet pipe 105, and the transported cold air is converted into hot air through the hot air furnace. The hot air is discharged through the hot air pipe 104, and the hot air is transported upward through the inner tube 202. Heat transfer fins 204 are installed inside the inner tube 202, and a connecting rod 205 is installed on the inner side of the heat transfer fins 204. The rotating piece 206 is installed through the connecting rod 205 to quickly transport the hot air. In order to increase the temperature inside the blast furnace during re-airing, a valve 303 is installed at the lower end of the placement slot 302. The valve 303 is started and closed by the controller 305. The controller 305 is connected to the timer 306 for use. The timer 306 is used to arrange the hot air furnace to perform the furnace burning operation in advance about 1.5 hours before the expected air supply time to ensure that the wind temperature level after the air supply does not drop too much. The hot air furnace is burned in advance, and the wind temperature can be reduced by about 15kg / t for every 100℃ increase.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of hot air stove, characterized in that: The invention comprises an outer shell component (1), an inner cavity component (2) is connected and installed inside the outer shell component (1), a heat-insulating shell (201) is installed on the upper end of the inner cavity component (2), an inner cylinder (202) is installed inside the heat-insulating shell (201), a heat-transfer fin (204) is connected and installed inside the inner cylinder (202), a connecting rod (205) is installed on the inner side of the heat-transfer fin (204), and a rotating plate (205) is installed on the upper end of the connecting rod (205). 06), a timing conveying component (3) is installed on the right side of the upper end of the housing component (1), a placement groove (302) is installed on the upper end of the timing conveying component (3), a valve (303) is installed on the lower end of the placement groove (302), a fixing frame (304) is fixed on the upper end of the placement groove (302), and a controller (305) is installed on the upper end of the fixing frame (304), and a timer (306) is installed on the lower end of the controller (305).

2. A new type of hot blast stove according to claim 1, characterized in that: An outer end shell (101) is installed at the upper end of the outer shell assembly (1), and an exhaust pipe (102) is installed at the upper end of the outer end shell (101); a support ring (103) is installed inside the outer end shell (101); a hot air pipe (104) is installed on the left side of the upper end of the outer end shell (101), and the lower end of the hot air pipe (104) is connected to an air intake pipe (105); and a blower (106) is installed at the lower end of the air intake pipe (105).

3. A new type of hot blast stove according to claim 1, characterized in that: A combustion chamber (203) is installed inside the inner cavity component (2).

4. A new type of hot blast stove according to claim 1, characterized in that: A conveying pipe (301) is installed at the upper end of the timing conveying component (3).

5. A new type of hot blast stove according to claim 1, characterized in that: The inner cavity component (2) is installed inside the outer end shell (101) in the outer shell component (1), and the timing conveying component (3) is installed on the right side of the upper end of the outer end shell (101) in the outer shell component (1).

6. A new type of hot blast stove according to claim 2, characterized in that: The hot air pipe (104) has the same structure as the air inlet pipe (105), the number of the support rings (103) is four, and a constant temperature ceramic layer is installed between the outer end shell (101) and the heat insulation shell (201).

7. A new type of hot blast stove according to claim 3, characterized in that: Insulating cement is placed between the insulating shell (201) and the inner cylinder (202); the upper end of the heat transfer fin (204) is an upwardly inclined structure; and the rotating sheet (206) is automatically rotated by the hot air flow.

8. A new type of hot blast stove according to claim 4, characterized in that: The delivery pipe (301) is installed on the upper right side of the outer end shell (101), and the delivery pipe (301) is a curved pipe structure. The placement groove (302) has a structure that is wide at the top and narrow at the bottom.

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