Heat preservation device for hot blast stove

Abstract

The heat preservation device comprises a heat preservation box, the bottom of an inner cavity of the heat preservation box is fixedly connected with a hot blast stove body, the output end of the hot blast stove body is fixedly connected with an air outlet pipe, the bottom of the heat preservation box is fixedly connected with a box body, and a draught fan is fixedly installed on the left side of an inner cavity of the box body. The output end of the draught fan is fixedly connected with a third pipeline, the input end of the draught fan is fixedly connected with a first pipeline, one side of the first pipeline communicates with a heating box, and a heating resistance wire is arranged in an inner cavity of the heating box. Through the arrangement of the fan, the first pipeline, the heating box, the heating resistance wire, the second pipeline and the third pipeline, the PLC and the temperature sensor are matched for use, and the problems that an existing hot blast stove is not provided with a heat preservation structure, when the hot blast stove needs to be blown down or shut down for a long time, internal refractory materials are damaged due to temperature reduction, and the service life of the hot blast stove is prolonged are solved. And subsequent normal use cannot be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of hot blast stoves, in particular to a heat preservation device for hot blast stoves. Background Art

[0002] Hot blast furnace is a thermal power machine. It began to be widely used in my country in the late 1970s. It has become a replacement product for electric heat source and traditional steam power heat source in many industries. There are many varieties and series of hot blast furnaces. They are divided into manual burning and machine burning according to the coal adding method, and divided into coal, oil and gas furnaces according to the fuel type.

[0003] The existing hot blast furnace does not have a thermal insulation structure. When the hot blast furnace needs to be rested or shut down for a long time, the temperature drop will damage the internal refractory materials, resulting in subsequent inability to use normally. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a heat preservation device for a hot blast furnace, which achieves the advantage of heat preservation and solves the problem that the existing hot blast furnace does not have a heat preservation structure. When the hot blast furnace needs to be rested or shut down for a long time, the temperature drop will cause damage to the internal refractory material, resulting in subsequent inability to use normally.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a heat preservation device for a hot blast furnace, comprising a heat preservation box, the bottom of the inner cavity of the heat preservation box is fixedly connected to a hot blast furnace body, the output end of the hot blast furnace body is fixedly connected to an air outlet pipe, the bottom of the heat preservation box is fixedly connected to a box body, a fan is fixedly installed on the left side of the inner cavity of the box body, the output end of the fan is fixedly connected to a third pipe, the input end of the fan is fixedly connected to a first pipe, one side of the first pipe is connected to a heating box, the inner cavity of the heating box is provided with a heating resistor, and one side of the heating resistor is fixedly connected to a second pipe.

[0006] Preferably, a temperature sensor is fixedly connected to the left side of the top of the inner cavity of the insulated box, and a PLC controller is fixedly connected to the bottom of the right side of the insulated box.

[0007] Preferably, the surface of the thermal insulation box is movably connected to a closed door via a hinge, and a handle is fixedly connected to one side of the surface of the closed door.

[0008] Preferably, anti-skid pads are bonded around the bottom of the box body, and the material of the anti-skid pads is rubber.

[0009] Preferably, a protective shell is provided on the surface of the box body, and the protective shell is fixedly connected to the box body by fastening bolts.

[0010] Preferably, a power supply box is fixedly connected to the back side of the box body, and a battery is provided in the inner cavity of the power supply box.

[0011] Preferably, both sides of the bottom of the fan are fixedly connected to limiting frames, and the bottom of the limiting frames is fixedly connected to the bottom of the inner cavity of the box.

[0012] Compared with the prior art, the utility model provides a heat preservation device for a hot blast furnace, which has the following beneficial effects:

[0013] 1. The utility model solves the problem that the existing hot blast furnace does not have a heat preservation structure and the temperature drop will damage the internal refractory material when the hot blast furnace needs to be stopped or shut down for a long time, resulting in subsequent inability to use normally, by setting a fan, a first pipeline, a heating box, a heating resistor, a second pipeline and a third pipeline, and using them in conjunction with a PLC controller and a temperature sensor.

[0014] 2. The utility model facilitates regular maintenance of the hot blast stove body by providing a closed door and a handle, greatly improving the service life of the hot blast stove body. The utility model provides power to electrical equipment by providing a battery to maintain normal operation of the electrical equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a cross-sectional view of the thermal insulation box of the utility model;

[0017] Figure 3 This is a cross-sectional view of the box of the utility model;

[0018] Figure 4 This is a schematic diagram of the second viewing angle of the present invention.

[0019] In the figure: 1. Insulation box; 2. Hot air furnace body; 3. Insulation cotton; 4. Temperature sensor; 5. Box; 6. Fan; 7. First pipeline; 8. Heating box; 9. Heating resistor wire; 10. Second pipeline; 11. Third pipeline; 12. Power supply box; 13. Battery; 14. PLC controller; 15. Sealed door; 16. Handle; 17. Exhaust pipe; 18. Anti-slip mat. DETAILED DESCRIPTION

[0020] 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.

[0021] 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.

[0022] 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.

[0023] See also Figure 1-4 A heat preservation device for a hot blast stove comprises a heat preservation box 1, a hot blast stove body 2 is fixedly connected to the bottom of the inner cavity of the heat preservation box 1, an outlet pipe 17 is fixedly connected to the output end of the hot blast stove body 2, a box body 5 is fixedly connected to the bottom of the heat preservation box 1, a fan 6 is fixedly installed on the left side of the inner cavity of the box body 5, a third pipe 11 is fixedly connected to the output end of the fan 6, a first pipe 7 is fixedly connected to the input end of the fan 6, a heating box 8 is connected to one side of the first pipe 7, a heating resistance wire 9 is provided in the inner cavity of the heating box 8, and a second pipe 10 is fixedly connected to one side of the heating resistance wire 9.

[0024] A temperature sensor 4 is fixedly connected to the left side of the top of the inner cavity of the heat preservation box 1 , and a PLC controller 14 is fixedly connected to the bottom of the right side of the heat preservation box 1 .

[0025] The surface of the heat preservation box 1 is movably connected to a closed door 15 via a hinge, and a handle 16 is fixedly connected to one side of the surface of the closed door 15. The arrangement of the closed door 15 and the handle 16 facilitates regular maintenance of the hot blast furnace body 2, thereby greatly improving the service life of the hot blast furnace body 2.

[0026] Anti-skid pads 18 are bonded around the bottom of the box body 5 , and the material of the anti-skid pads 18 is rubber.

[0027] A protective shell is provided on the surface of the box body 5, and the protective shell and the box body 5 are fixedly connected by fastening bolts.

[0028] A power supply box 12 is fixedly connected to the back of the box body 5. A battery 13 is arranged in the inner cavity of the power supply box 12. The battery 13 is used to supply power to the electrical equipment to maintain the normal operation of the electrical equipment.

[0029] Both sides of the bottom of the fan 6 are fixedly connected to the limiting frames, and the bottom of the limiting frames is fixedly connected to the bottom of the inner cavity of the box body 5.

[0030] The working principle of the utility model is: first, the temperature of the inner cavity of the heat preservation box 1 is detected by the temperature sensor 4, and then the temperature is transmitted to the PLC controller 14 through the temperature sensor 4, and the PLC controller 14 is used for analysis. When the temperature of the inner cavity of the heat preservation box 1 is lower than the set value, the heating box 8 and the fan 6 are started by the PLC controller 14, and the fan 6 sucks the air of the inner cavity of the heat preservation box 1 through the first pipe 7. The air is transmitted to the inner cavity of the heating box 8 through the second pipe 10, and the air is continuously heated by the heating resistor 9. After the heating, the air is transmitted to the inner cavity of the heat preservation box 1 again with the cooperation of the first pipe 7 and the third pipe 11, and this is repeated until the temperature of the inner cavity of the heat preservation box 1 returns to the set value, so that the temperature of the inner cavity of the heat preservation box 1 is kept constant. At the same time, it is used in conjunction with the thermal insulation cotton 3 to greatly improve the thermal insulation effect.

[0031] Although the 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 heat preservation device for a hot blast stove, comprising a heat preservation box (1), characterized in that: The bottom of the inner cavity of the heat preservation box (1) is fixedly connected to a hot air furnace body (2), the output end of the hot air furnace body (2) is fixedly connected to an air outlet pipe (17), the bottom of the heat preservation box (1) is fixedly connected to a box body (5), a fan (6) is fixedly installed on the left side of the inner cavity of the box body (5), the output end of the fan (6) is fixedly connected to a third pipe (11), the input end of the fan (6) is fixedly connected to a first pipe (7), one side of the first pipe (7) is connected to a heating box (8), the inner cavity of the heating box (8) is provided with a heating resistance wire (9), and one side of the heating resistance wire (9) is fixedly connected to a second pipe (10).

2. The heat preservation device for a hot blast stove according to claim 1, characterized in that: A temperature sensor (4) is fixedly connected to the left side of the top of the inner cavity of the thermal insulation box (1), and a PLC controller (14) is fixedly connected to the bottom of the right side of the thermal insulation box (1).

3. The heat preservation device for a hot blast stove according to claim 1, characterized in that: The surface of the heat preservation box (1) is movably connected to a closed door (15) via a hinge, and a handle (16) is fixedly connected to one side of the surface of the closed door (15).

4. The heat preservation device for a hot blast stove according to claim 1, characterized in that: Anti-skid pads (18) are bonded to the four sides of the bottom of the box body (5), and the material of the anti-skid pads (18) is rubber.

5. The heat preservation device for a hot blast stove according to claim 1, characterized in that: A protective shell is provided on the surface of the box body (5), and the protective shell and the box body (5) are fixedly connected by fastening bolts.

6. The heat preservation device for a hot blast stove according to claim 1, characterized in that: A power supply box (12) is fixedly connected to the back of the box body (5), and a storage battery (13) is provided in the inner cavity of the power supply box (12).

7. The heat preservation device for a hot blast stove according to claim 1, characterized in that: Both sides of the bottom of the fan (6) are fixedly connected to limit frames, and the bottom of the limit frames is fixedly connected to the bottom of the inner cavity of the box body (5).

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