Temperature adjusting structure of hot blast stove

Abstract

The utility model provides a temperature adjusting structure of a hot-blast stove, which belongs to the technical field of hot-blast stove equipment and comprises a burner communicated with a heating chamber, a heat preservation bin arranged outside the heating chamber, a heat preservation cavity arranged between the outer wall of the heating chamber and the inner wall of the heat preservation bin, and a plurality of air distribution holes arranged on the periphery of an air inlet pipe. According to the utility model, the opening and closing degree of the air distribution pipe is controlled through the electric control valve, when the furnace temperature needs to be increased, the air volume of the air distribution hole can be increased, more oxygen enters the furnace, and the oxygen in the furnace can be increased, so that the oxygen in the furnace can be increased, and the oxygen in the furnace can be increased. And sufficient combustion of fuel is promoted, so that the furnace temperature is increased. On the contrary, when the furnace temperature needs to be reduced, the air volume of the air distribution holes, oxygen supply and combustion intensity can be reduced, so that the furnace temperature is reduced, the temperature of the hot-blast stove can be adjusted, a temperature adjusting fan is replaced, the weight of the hot-blast stove is reduced, and installation of the hot-blast stove is facilitated.

Description

Technical Field

[0001] This utility model relates to the technical field of hot air furnace equipment, specifically to a temperature control structure for a hot air furnace. Background Technology

[0002] A hot air furnace is a device used to generate hot air, commonly used for heating and drying operations in industrial production processes. Traditional hot air furnaces mostly use natural gas for heating, thereby heating the interior of the dryer and drying the materials.

[0003] In related technologies, hot air furnaces mainly consist of multiple components such as burners, heating chambers, and boiler pipes. By extending the heating pipes of the burner into the heating chamber, heat is supplied to the heating chamber. The temperature of the heating chamber is then regulated by a temperature-regulating fan, thereby controlling the temperature at which heat is transferred within the heating chamber.

[0004] However, when installing a hot blast stove, the materials used are heavy, and a temperature regulating fan is required for temperature regulation, which increases the weight of the hot blast stove, making it heavy and inconvenient to install. To solve the above problems, a temperature regulating structure for a hot blast stove is proposed. Utility Model Content

[0005] In view of this, the present invention provides a temperature control structure for a hot blast stove. This invention controls the opening and closing of the air distribution pipes via an electric regulating valve. When it is necessary to increase the furnace temperature, the airflow through the air distribution holes can be increased, allowing more oxygen to enter the furnace and promoting complete fuel combustion, thereby increasing the furnace temperature. Conversely, when it is necessary to decrease the furnace temperature, the airflow through the air distribution holes can be reduced, decreasing the oxygen supply and reducing the combustion intensity, thus lowering the furnace temperature. This allows for temperature control of the hot blast stove, replacing the temperature control fan, reducing the weight of the hot blast stove, and facilitating its installation.

[0006] To solve the above-mentioned technical problems, this utility model provides a temperature control structure for a hot air furnace, including a burner connected to an air inlet pipe on the upper part of the heating chamber, an oxygen-enriching fan connected to the bottom of the burner, an insulation chamber outside the heating chamber, an insulation cavity between the outer wall of the heating chamber and the inner wall of the insulation chamber, multiple air distribution holes around the air inlet pipe, the air distribution holes passing through the insulation chamber and entering the heating chamber, an air distribution pipe inside the air distribution hole, and an electric regulating valve at the end of the air distribution pipe away from the insulation chamber.

[0007] The insulation cavity is filled with a ceramic fiber insulation layer, which is used to keep the heating chamber warm and prevent the heat inside the heating chamber from dissipating too quickly. A temperature detector is installed on one of the outer walls of the insulation chamber, and the probe on the temperature detector corresponds to the outer wall of the heating chamber. Compared with traditional high-alumina refractory materials, this can greatly reduce the weight of the hot blast stove.

[0008] The top of the insulation chamber is equipped with a pressure relief port, which can sense changes in the pressure of the gas inside the furnace. When the gas pressure inside the hot air furnace exceeds the maximum value allowed by the system design, the pressure relief port will automatically open to release the excess pressure, thereby ensuring the safe operation of the hot air furnace and the entire system. A pressure relief pipe is installed inside the pressure relief port, which is used for gas flow in the heating chamber. An exhaust valve is installed at the outlet end of the pressure relief pipe, which is used to control the opening and closing of the pressure relief pipe. The pressure relief pipe passes through the insulation chamber and connects to the heating chamber.

[0009] The heating chamber has an internal air nozzle at its air outlet, which is used to exhaust hot air from the heating chamber. The insulation chamber has an external air nozzle at its air outlet, which is used to insulate the hot air flowing through the internal air nozzle. A sealing plate is installed at the connection gap between the external air nozzle and the internal air nozzle, which is used to insulate the connection gap between the external air nozzle and the internal air nozzle.

[0010] One side of the external air nozzle is provided with an inspection port, and a maintenance sealing window is provided inside the inspection port. The inspection port passes through the external air nozzle and connects with the internal air nozzle.

[0011] The burner has a first bracket at the bottom, which is used to support and fix the burner. There is a support at each of the four bottom corners of the outer wall of the insulation chamber, which is used to support and fix the insulation chamber. The bottom of the first bracket and the support are at the same height.

[0012] Each support includes a positioning groove connected to the lower surface of the insulation chamber. The positioning groove is used to connect the insulation chamber to the support column. A support column is provided at the bottom of each positioning groove. The support column is used to support the insulation chamber. A positioning plate is provided at the lower end of each support column. The positioning plate is used to detachably connect the support column to the first bracket. The positioning plate is at the same height as the first bracket.

[0013] The lower part of the first support is equipped with an equipment support, which is used to support the entire hot blast furnace device. A positioning bolt is set at each of the four corners of the positioning plate. The positioning bolt is used to connect the positioning plate to the equipment support. The positioning bolt passes through the positioning plate and is fixed to the upper surface of the equipment support.

[0014] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0015] 1. The opening and closing degree of the air distribution pipe is controlled by an electric regulating valve. When it is necessary to increase the furnace temperature, the air volume of the air distribution holes can be increased to allow more oxygen to enter the furnace, promoting complete combustion of fuel and thus increasing the furnace temperature. Conversely, when it is necessary to decrease the furnace temperature, the air volume of the air distribution holes can be reduced to decrease the oxygen supply and reduce the combustion intensity, thereby lowering the furnace temperature. This allows for temperature adjustment of the hot blast stove, replacing the temperature regulating fan, reducing the weight of the hot blast stove, and facilitating its installation.

[0016] 2. The insulation cavity is filled with a ceramic fiber insulation layer, which is used to insulate the heating chamber and prevent the heat in the heating chamber from dissipating too quickly. A temperature detector is installed on the outer wall of one side of the insulation chamber. The temperature detector passes through the outer wall of the insulation chamber and enters the ceramic fiber insulation layer. The probe on the temperature detector corresponds to the outer wall of the heating chamber.

[0017] 3. The positioning bolts pass through the positioning plate and are fixed to the upper surface of the equipment bracket, so that the support components installed at the bottom of the insulation chamber can be detachably connected to the equipment bracket, thus facilitating the installation of the hot air furnace equipment. Attached Figure Description

[0018] Figure 1 This is a front view structural diagram of the present utility model;

[0019] Figure 2 This is a front sectional view of the present invention;

[0020] Figure 3 This utility model Figure 2 A magnified view of part A;

[0021] Figure 4 This is a schematic diagram of the main structure of this utility model;

[0022] Figure 5 This utility model Figure 4 A magnified view of part B;

[0023] Figure 6 This is a side sectional view of the present invention.

[0024] Explanation of reference numerals in the attached drawings: 100, Heating chamber; 101, Air inlet pipe; 102, Burner; 103, Aeration fan; 104, Pressure relief port; 105, Pressure relief pipe; 106, Exhaust valve; 200, Insulation chamber; 201, Insulation cavity; 202, Ceramic fiber insulation layer; 203, Temperature detector; 204, Built-in air nozzle; 205, External air nozzle; 206, Sealing plate; 300, Air distribution hole; 301, Air distribution pipe; 302, Electric regulating valve; 303, Inspection port; 304, Maintenance sealing window; 400, First support; 401, Support component; 402, Positioning groove; 403, Support column; 404, Positioning plate; 405, Positioning bolt; 406, Equipment support. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the appendices of the embodiments of this utility model. Figure 1-6The technical solutions of the embodiments of this utility model are clearly and completely described below. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0026] like Figure 1-6 As shown: This embodiment provides a temperature control structure for a hot air furnace, including a burner 102 connected to an air inlet pipe 101 on a heating chamber 100. The burner 102 can be a natural gas burner. The air inlet pipe 101 is sealed to the heating chamber 100 via a flange. The air inlet pipe 101 is sealed to the outlet pipe of the burner 102 via a flange or directly welded. An oxygen-enriching fan 103 is connected to the bottom of the burner 102. The oxygen-enriching fan 103 is sealed to the air inlet pipe 101. The oxygen-enriching fan 103 can reduce fuel consumption, save energy, and reduce emissions, making it more environmentally friendly. A valve can be added to the outlet end of the oxygen-enriching fan 103. The exterior of the heating chamber 100 is provided with an insulation chamber 200, which is welded to the heating chamber 100. An insulation cavity 201 is provided between the outer wall of the heating chamber 100 and the inner wall of the insulation chamber 200. The insulation cavity 201 is used to fill the ceramic fiber insulation chamber 200. Multiple air distribution holes 300 are provided around the air inlet pipe 101. The air distribution holes 300 pass through the insulation chamber 200 and enter the heating chamber 100. An air distribution pipe 301 is provided in the air distribution hole 300. The air distribution hole 300 and the air distribution pipe 301 are welded to each other. An electric regulating valve 302 is provided at the end of the air distribution pipe 301 away from the insulation chamber 200. The electric regulating valve 302 and the air distribution pipe 301 can be connected through a flange.

[0027] In use, the opening and closing degree of the air distribution pipe 301 is controlled by controlling the electric regulating valve 302, thereby controlling the flow rate of the air entering the heating chamber 100. This promotes air circulation and fuel mixing, allowing the fuel to burn more completely and improving combustion efficiency. At the same time, the air distribution hole 300 can also play the role of exhausting exhaust gas, timely expelling the exhaust gas generated by combustion from the furnace and preventing it from accumulating in the furnace, thereby reducing the emission of harmful substances. It can replace the temperature regulating fan to regulate the temperature of the heating chamber 100, and thus regulate the temperature of the hot air furnace, thereby reducing the weight of the hot air furnace and facilitating its installation. The heat insulation chamber 200 and the ceramic fiber insulation layer 202 are used to insulate the heat energy in the heating chamber 100, improving the thermal efficiency of the hot air furnace.

[0028] This embodiment provides a temperature control structure for a hot air furnace.

[0029] like Figure 2 , 6As shown: The insulation cavity 201 is filled with a ceramic fiber insulation layer 202. The ceramic fiber insulation layer 202 is used to insulate the heating chamber 100 and prevent the heat in the heating chamber 100 from dissipating too quickly. A temperature detector 203 is provided on the outer wall of one side of the insulation cavity 200. The temperature detector 203 passes through the outer wall of the insulation cavity 200 and enters the ceramic fiber insulation layer 202. The probe on the temperature detector 203 corresponds to the outer wall of the heating chamber 100.

[0030] Its effects are as follows: the ceramic fiber insulation layer 202 can block the heat from dissipating, so that the heat in the heating chamber can be fully utilized, thereby improving the thermal efficiency of the hot blast stove. The temperature detector 203 is used to detect the temperature of the heating chamber 100, and can then control the opening and closing of the air distribution pipe 301 according to the temperature in the heating chamber 100. Compared with traditional high-alumina refractory materials, the use of ceramic fiber insulation layer 202 can greatly reduce the weight of the hot blast stove.

[0031] like Figure 2 , 4 As shown: A pressure relief port 104 is provided at the top of the insulation chamber 200. The pressure relief port 104 passes through the top of the insulation chamber 200 and the top of the heating chamber 100. A pressure relief pipe 105 is provided inside the pressure relief port 104. The pressure relief pipe 105 is used for gas flow in the heating chamber 100. An exhaust valve 106 is provided at the outlet end of the pressure relief pipe 105. The exhaust valve 106 and the pressure relief pipe 105 can be connected by threads or by a flange. The exhaust valve 106 is used to control the opening and closing of the pressure relief pipe 105. The pressure relief pipe 105 passes through the insulation chamber 200 and communicates with the heating chamber 100.

[0032] Its effect is as follows: the pressure relief port 104 can sense the pressure change of the gas inside the furnace. When the gas pressure inside the heating chamber 100 exceeds the maximum value allowed by the system design, the pressure relief port 104 will automatically open to release the excess pressure, thereby ensuring the safe operation of the hot air furnace and the entire system. When the gas pressure in the heating chamber 100 drops to the normal level, the pressure relief port 104 will automatically close to avoid unnecessary heat and gas loss and maintain a stable working environment inside the furnace.

[0033] like Figure 1 , 2As shown in Figures 3 and 6: The air outlet of the heating chamber 100 is provided with a built-in air nozzle 204. The heating chamber 100 and the built-in air nozzle 204 are welded together. The built-in air nozzle 204 is used to exhaust the hot air in the heating chamber 100. The air outlet of the insulation chamber 200 is provided with an external air nozzle 205. The external air nozzle 205 is welded together with the insulation chamber 200. The external air nozzle 205 is used to insulate the hot air flowing in the built-in air nozzle 204. A sealing plate 206 is provided at the connection gap between the air outlets of the external air nozzle 205 and the built-in air nozzle 204. The sealing plate 206 is used to insulate the connection gap between the external air nozzle 205 and the built-in air nozzle 204. The connection gap between the sealing plate 206 and the external air nozzle 205 and the built-in air nozzle 204 can be fixed by bolts or sealed by welding.

[0034] Its effect is as follows: the sealing plate 206 is used to insulate the connection gap between the external air nozzle 205 and the internal air nozzle 204. The connection gap between the sealing plate 206 and the external air nozzle 205 and the internal air nozzle 204 can be fixed by bolt connection or sealed by welding.

[0035] like Figure 1 , 2 As shown in Figure 4: One side of the external air nozzle 205 is provided with an inspection port 303. The inspection port 303 passes through the external air nozzle 205 and is connected to the internal air nozzle 204. Insulation material can be installed inside the inspection port 303. A maintenance sealing window 304 is provided inside the inspection port 303. The maintenance sealing window 304 seals the inspection port 303. The maintenance sealing window 304 is connected to the outer wall of the external air nozzle 205 by bolts. The inspection port passes through the external air nozzle 205 and is connected to the internal air nozzle 204.

[0036] Its effect is as follows: the access port provides technicians with a convenient access for maintenance, allowing them to directly access the internal equipment and pipes of the hot blast stove. When a part inside the hot blast stove malfunctions or needs to be inspected regularly, technicians can quickly enter through the access port and perform necessary operations, such as replacing parts, cleaning ash, and inspecting welds.

[0037] like Figure 1 , 2As shown in Figures 4 and 6: A first support 400 is provided at the bottom of the burner 102. The first support 400 is fixed to the burner 102 by bolts. The first support 400 is used to support and fix the burner 102. A support member 401 is provided at each of the four bottom corners of the outer wall of the insulation chamber 200. The support member 401 is used to support and fix the insulation chamber 200. The bottom of the first support 400 and the support member 401 are at the same height. Each support member 401 includes a positioning groove 402 that connects to the lower surface of the insulation chamber 200. The positioning groove 402 and the lower surface of the insulation chamber 200 can be fixed by bolts. The positioning groove 402 is used to connect the insulation chamber 200 to the support column 403. A support column 403 is provided at the bottom of each positioning groove 402. The groove opening of the positioning groove 402 fits with the top of the support column 403. The connection with the support column 403 can be reinforced by welding. The support column 403 is used to support the heat preservation chamber 200. A positioning plate 404 is provided at the lower end of each support column. The positioning plate 404 is welded and fixed to the lower end of the support plate. The positioning plate 404 is used to detachably connect the support column 403 to the first bracket 400. The positioning plate 404 is at the same height as the first bracket 400. An equipment bracket 406 is provided at the lower part of the first bracket 400. The equipment bracket 406 and the first bracket 400 can be fixed by bolts. The equipment bracket 406 is used to support the entire hot air furnace device. A positioning bolt 405 is provided at each of the four corners of the positioning plate 404. The positioning bolt 405 is used to connect the positioning plate 404 to the equipment bracket 406. The positioning bolt 405 passes through the positioning plate 404 and is fixed to the upper surface of the equipment bracket 406.

[0038] The effect is that the positioning bolts 405 pass through the positioning plate 404 and are fixed to the upper surface of the equipment bracket 406, so that the support 401 installed at the lower part of the insulation chamber 200 can be detachably connected to the equipment bracket 406, thereby facilitating the installation of the hot air furnace equipment.

[0039] Working principle: By controlling the electric regulating valve 302, the opening and closing degree of the air distribution pipe 301 is controlled, thereby controlling the flow rate of air entering the heating chamber 100. This promotes air circulation and fuel mixing, allowing the fuel to burn more completely and improving combustion efficiency. At the same time, the air distribution hole 300 also plays the role of exhausting exhaust gas, timely expelling the exhaust gas generated by combustion from the furnace and preventing its accumulation in the furnace, thereby reducing the emission of harmful substances. It can replace the temperature regulating fan to regulate the temperature of the heating chamber 100, and thus regulate the temperature of the hot air furnace, thereby reducing the weight of the hot air furnace. The insulation chamber 200 and the equipment bracket 406 can be easily separated by disassembling and assembling the support component 401, thereby facilitating the installation of the hot air furnace. The insulation chamber 200 and the ceramic fiber insulation layer 202 insulate the heat energy in the heating chamber 100, improving the thermal efficiency of the hot air furnace.

[0040] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A temperature control structure for a hot air furnace, comprising a burner (102) connected to an air inlet pipe (101) on the upper part of a heating chamber (100), and an oxygen-enriching fan (103) connected to the bottom of the burner (102), characterized in that: The heating chamber (100) is provided with an insulation chamber (200) outside. An insulation chamber (201) is provided between the outer wall of the heating chamber (100) and the inner wall of the insulation chamber (200). Multiple air distribution holes (300) are provided around the air inlet pipe (101). The air distribution holes (300) pass through the insulation chamber (200) and enter the heating chamber (100). An air distribution pipe (301) is provided in the air distribution hole (300). An electric regulating valve (302) is provided at the end of the air distribution pipe (301) away from the insulation chamber (200).

2. The temperature control structure of a hot air furnace as described in claim 1, characterized in that: The insulation cavity (201) is filled with a ceramic fiber insulation layer (202), and a temperature detector (203) is provided on the outer wall of one side of the insulation chamber (200). The probe on the temperature detector (203) corresponds to the outer wall of the heating chamber (100).

3. The temperature control structure of a hot air furnace as described in claim 2, characterized in that: The top of the heat preservation chamber (200) is provided with a pressure relief port (104), and a pressure relief pipe (105) is provided inside the pressure relief port (104). An exhaust valve (106) is provided at the outlet end of the pressure relief pipe (105). The pressure relief pipe (105) passes through the heat preservation chamber (200) and communicates with the heating chamber (100).

4. The temperature control structure of a hot air furnace as described in claim 3, characterized in that: The heating chamber (100) is provided with an internal air nozzle (204) at the air outlet end, and the heat preservation chamber (200) is provided with an external air nozzle (205) at the air outlet end. A sealing plate (206) is provided at the connection gap between the external air nozzle (205) and the air outlet end of the internal air nozzle (204).

5. The temperature control structure of a hot air furnace as described in claim 4, characterized in that: One side of the external air nozzle (205) is provided with an inspection port (303), and an inspection sealing window (304) is provided inside the inspection port (303). The inspection port (303) passes through the external air nozzle (205) and is connected to the internal air nozzle (204).

6. The temperature control structure of a hot air furnace as described in claim 5, characterized in that: The burner (102) is provided with a first bracket (400) at the bottom, and a support member (401) is provided at each of the four bottom corners of the outer wall of the heat preservation chamber (200). The bottom of the first bracket (400) and the support member (401) are at the same height.

7. The temperature control structure of a hot air furnace as described in claim 6, characterized in that: Each of the support members (401) includes a positioning groove (402) connected to the lower surface of the heat preservation chamber (200), a support column (403) is provided at the bottom of each positioning groove (402), and a positioning plate (404) is provided at the lower end of each support column (403), the positioning plate (404) being at the same height as the first bracket (400).

8. The temperature control structure of a hot air furnace as described in claim 7, characterized in that: The first bracket (400) has a device bracket (406) at its lower part. The positioning plate (404) has a positioning bolt (405) at each of its four corners. The positioning bolt (405) passes through the positioning plate (404) and is fixed to the upper surface of the device bracket (406).

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