High-sealing double-heat-storage blast furnace hot blast stove

Abstract

The utility model discloses a high-sealing double-heat-storage blast furnace hot blast stove, which relates to the related technical field of blast furnace hot blast stoves and comprises a base, a stove body is arranged at the top of the base, a heater is fixedly mounted at the center of the bottom of an inner cavity of the stove body, and return pipes are fixedly mounted on the upper side and the lower side of one end of the stove body. A transfer box is fixedly installed on the side, close to the center of the furnace body, of the backflow pipe, an air outlet pipe is fixedly installed on the upper portion of the bottom of the side, away from the center of the base, of the transfer box, and a sealing plug is rotationally connected to the side, away from the center of the base, of the air outlet pipe. According to the high-sealing double-heat-storage blast furnace hot blast stove, through the arrangement of the stove body, compared with an internal structure of a traditional stove body, the heat storage layer is additionally arranged, when the interior of the stove body is heated, heat is conducted to the interior of the heat storage layer through the arrangement of the heat conduction layer, and the heat is stored through the heat storage layer; the heat in the furnace body can be kept for a longer time, and meanwhile the purpose of double heat storage is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field related to blast furnace hot blast stoves, in particular to a high-sealing double-heat storage blast furnace hot blast stove. Background Art

[0002] The blast furnace hot blast stove is one of the main supporting equipment for the blast furnace in an ironmaking plant. Generally, one blast furnace is equipped with 3 to 4 hot blast stoves. The function of the hot blast stove is to continuously provide high-temperature and high-pressure hot air for the blast furnace. The hot air temperature is generally above 1200 degrees, and the air pressure is greater than or equal to 400KPa.

[0003] During use, the currently used blast furnace hot blast stove usually directly discharges the rising air in order to discharge the exhaust gas in time. The discharged exhaust gas contains a large amount of hot gas, and the hot gas is not fully utilized, thus causing waste. At the same time, the existing blast furnace hot blast stove has poor heat storage capacity, so the heat storage time is short, and the heat is not fully utilized. Utility Model Content

[0004] The utility model aims to provide a high-sealed double heat storage blast furnace hot blast stove to solve the problem raised in the above background technology that the currently used blast furnace hot blast stove usually directly discharges the rising air in order to discharge the exhaust gas in time during use, and the discharged exhaust gas contains a large amount of hot gas, and the hot gas is not fully utilized, thus causing waste. At the same time, the existing blast furnace hot blast stove has poor heat storage capacity, so the heat storage time is short and the heat is not fully utilized.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a highly sealed double heat storage blast furnace hot blast furnace, comprising a base, a furnace body is arranged on the top of the base, a heater is fixedly installed at the bottom center of the inner cavity of the furnace body, return pipes are fixedly installed on the upper and lower sides of one end of the furnace body, a transfer box is fixedly installed on the side of the return pipe close to the center of the furnace body, an air outlet pipe is fixedly installed on the upper part of the bottom of the transfer box away from the center of the base, a sealing plug is rotatably connected to the side of the air outlet pipe away from the center of the base, and a filtering mechanism is arranged inside the transfer box.

[0006] Preferably, the furnace body and the transfer box form a series structure through a return pipe, and the air outlet pipe and the transfer box form an integrated structure.

[0007] Preferably, the furnace body comprises an outer shell, a heat storage layer is arranged inside the outer shell, and a heat conductive layer is arranged inside the heat storage layer.

[0008] Preferably, the heat conducting layer is configured as bricks with good thermal conductivity.

[0009] Preferably, the filtering mechanism includes mounting rails, which are equidistantly distributed inside the transfer box, and the mounting rails are slidably connected to the inside of the mounting rails, and a filter plate is fixedly installed inside the mounting frame, and one end of the mounting frame is fixedly connected to a pull-out plate, and one end of the pull-out plate is fixedly installed with a handle.

[0010] Preferably, the pull-out plate is integrally connected to the mounting frame and the filter plate, and the pull-out plate is embedded in the interior of the transfer box.

[0011] Preferably, reinforcement rings are sleeved on the upper and lower ends of the exterior of the furnace body near the center, and adjustment pins are fixedly connected to the two ends of the front side of the reinforcement ring. The internal threads of the adjustment pins are connected to adjustment bolts, and the external ends of the adjustment bolts are threadedly connected to nut caps.

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

[0013] 1. The high-sealed double heat storage blast furnace hot blast furnace, through the setting of the furnace body and, compared with the internal structure of the traditional furnace body, adds the setting of the heat storage layer. When the interior of the furnace body is heated, the heat is transferred to the interior of the heat storage layer through the setting of the heat conduction layer, and the heat is stored through the heat storage layer, so that the heat inside the furnace body can be maintained for a longer time, and the purpose of double heat storage is achieved at the same time;

[0014] 2. The high-sealed double-heat storage blast furnace hot blast furnace, through the setting of the filtering mechanism, during use, the hot gas is transported to the inside of the transfer box through the reflux pipe, and the impurities in the hot gas are filtered through the filter plate. After the filtering is completed, it is returned to the inside of the furnace body, so as to achieve the purpose of fully utilizing the heat. At the same time, through the setting of the transfer box, the sealing of the blast furnace hot blast furnace is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0016] Figure 2 It is a schematic diagram of a partial top view of the cross-sectional structure of the utility model;

[0017] Figure 3 It is a partial cross-sectional structural schematic diagram of the transfer box in the figure of the utility model;

[0018] Figure 4 For this utility model Figure 1 Enlarged schematic diagram at point A in the middle.

[0019] In the figure: 1. base; 2. furnace body; 201. outer shell; 202. heat storage layer; 203. heat conductive layer; 3. heater; 4. return pipe; 5. transfer box; 6. air outlet pipe; 7. sealing plug; 8. filtering mechanism; 801. mounting rail; 802. mounting frame; 803. filter plate; 804. pull-out plate; 805. handle; 9. reinforcement ring; 10. adjusting pin; 11. adjusting bolt; 12. nut cap. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4 The utility model provides a technical solution: a high-sealed double-heat storage blast furnace hot blast furnace, such as Figure 1 As shown, it includes a base 1, a furnace body 2 is arranged on the top of the base 1, a heater 3 is fixedly installed at the center of the bottom of the inner cavity of the furnace body 2, a return pipe 4 is fixedly installed on both upper and lower sides of one end of the furnace body 2, a transfer box 5 is fixedly installed on the side of the return pipe 4 close to the center of the furnace body 2, an air outlet pipe 6 is fixedly installed on the upper part of the bottom of the transfer box 5 away from the center of the base 1, a sealing plug 7 is rotatably connected to the side of the air outlet pipe 6 away from the center of the base 1, and a filter mechanism 8 is arranged inside the transfer box 5. The furnace body 2 and the transfer box 5 form a series structure through the return pipe 4, and the air outlet pipe 6 and the transfer box 5 form an integrated structure. The upper and lower ends of the outer part of the furnace body 2 near the center are sleeved with a reinforcement ring 9, and the two ends of the front side of the reinforcement ring 9 are fixedly connected with an adjustment pin 10, the inner part of the adjustment pin 10 is threadedly connected with an adjustment bolt 11, and the outer parts of the two ends of the adjustment bolt 11 are threadedly connected with nut caps 12.

[0022] The furnace body 2 comprises an outer shell 201, a heat storage layer 202 is arranged inside the outer shell 201, and a heat conduction layer 203 is arranged inside the heat storage layer 202. The heat conduction layer 203 is arranged as a brick with good heat conduction performance.

[0023] Through the setting of the furnace body 2 and, compared with the internal structure of the traditional furnace body 2, the setting of the heat storage layer 202 is added. When the interior of the furnace body 2 is heated, the heat is conducted to the interior of the heat storage layer 202 through the setting of the heat conductive layer 203, and the heat is stored by the heat storage layer 202, so that the heat inside the furnace body 2 can be maintained for a longer time, and the purpose of dual heat storage is achieved at the same time.

[0024] The filter mechanism 8 includes a mounting rail 801, which is equidistantly distributed inside the transfer box 5, a mounting frame 802 is slidably connected inside the mounting rail 801, a filter plate 803 is fixedly installed inside the mounting frame 802, a pull-out plate 804 is fixedly connected to one end of the mounting frame 802, and a handle 805 is fixedly installed at one end of the pull-out plate 804. The pull-out plate 804 is integrally connected with the mounting frame 802 and the filter plate 803, and the pull-out plate 804 is embedded in the transfer box 5.

[0025] Through the setting of the filtering mechanism 8, during use, the hot gas is transported to the interior of the transfer box 5 through the reflux pipe 4, and the impurities in the hot gas are filtered through the filter plate 803. After the filtering is completed, it is returned to the interior of the furnace body 2, so as to achieve the purpose of fully utilizing the heat. At the same time, through the setting of the transfer box 5, the sealing of the blast furnace hot blast stove is increased.

[0026] Working principle: First, the heater 3 is started to heat the inside of the furnace body 2. Since the heat-conducting layer 203 is set as a brick with good thermal conductivity, the heat-conducting layer 203 can be quickly passed through so that the furnace body 2 can be heated over a large area. Then, the heat is transferred to the inside of the heat storage layer 202 through the heat-conducting layer 203, and a large amount of heat is stored in the heat storage layer 202.

[0027] During use, the nut cap 12 is rotated, and the reinforcement ring 9 is tightened through the action of the nut cap 12 and the adjusting bolt 11, so that the furnace body 2 is heated from the outside, thereby avoiding cracking of the furnace body 2 after long-term use and extending the service life of the equipment.

[0028] During the operation of the equipment, hot air enters the interior of the transfer box 5 through the return pipe 4, and is double filtered by the filter plate 803 inside the transfer box 5. After use, the installation frame 802 can be pulled out from the interior of the installation rail 801 through the pull-out plate 804 and the handle 805. Since the pull-out plate 804, the installation frame 802 and the filter plate 803 are integrally connected, it is convenient to take out the filter plate 803 for maintenance and cleaning.

[0029] The filtered hot air flows back to the interior of the furnace body 2 through the reflux pipe 4 below the transfer box 5, thereby achieving the purpose of fully utilizing the heat.

[0030] 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 high-sealed double-heat storage blast furnace hot blast stove, comprising a base (1), characterized in that: A furnace body (2) is arranged on the top of the base (1); a heater (3) is fixedly mounted at the center of the bottom of the inner cavity of the furnace body (2); return pipes (4) are fixedly mounted on both upper and lower sides of one end of the furnace body (2); a transfer box (5) is fixedly mounted on the side of the return pipe (4) close to the center of the furnace body (2); an air outlet pipe (6) is fixedly mounted on the upper part of the bottom of the transfer box (5) away from the center of the base (1); a sealing plug (7) is rotatably connected to the side of the air outlet pipe (6) away from the center of the base (1); and a filtering mechanism (8) is arranged inside the transfer box (5).

2. A high-sealed double-heat storage hot blast furnace according to claim 1, characterized in that: The furnace body (2) and the transfer box (5) form a series structure through a return pipe (4), and the air outlet pipe (6) and the transfer box (5) form an integrated structure.

3. A high-sealed double-heat storage blast furnace hot blast stove according to claim 1, characterized in that: The furnace body (2) comprises an outer shell (201), a heat storage layer (202) is arranged inside the outer shell (201), and a heat conduction layer (203) is arranged inside the heat storage layer (202).

4. A high-sealed double-heat storage hot blast furnace according to claim 3, characterized in that: The heat-conducting layer (203) is configured as bricks with good heat-conducting properties.

5. The high-sealed double-heat storage blast furnace hot blast stove according to claim 1, characterized in that: The filtering mechanism (8) comprises a mounting rail (801), wherein the mounting rail (801) is equidistantly distributed inside the transfer box (5), the mounting rail (801) is slidably connected to a mounting frame (802) inside, a filtering plate (803) is fixedly installed inside the mounting frame (802), one end of the mounting frame (802) is fixedly connected to a pull-out plate (804), and one end of the pull-out plate (804) is fixedly installed with a handle (805).

6. A high-sealed double-heat storage hot blast furnace according to claim 5, characterized in that: The pull-out plate (804), the mounting frame (802) and the filter plate (803) are integrally connected, and the pull-out plate (804) is embedded in the interior of the transfer box (5).

7. The high-sealed double-heat storage hot blast furnace according to claim 4, characterized in that: The upper and lower ends of the exterior of the furnace body (2) near the center are sleeved with reinforcement rings (9), the two ends of the front side of the reinforcement ring (9) are fixedly connected with adjustment pins (10), the internal thread of the adjustment pin (10) is connected with an adjustment bolt (11), and the external ends of the two ends of the adjustment bolt (11) are threadedly connected with nut caps (12).

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