Earth gun combustion device for low temperature uniform baking furnace

Abstract

This utility model relates to the technical field of metallurgical industry, and in particular to a fire-gun combustion device for a low-temperature uniform baking furnace; it includes at least one multi-hole jet burner installed in the furnace body, at least one temperature sensor installed in the furnace body, a mixing air inlet pipe connected to the air inlet end of the multi-hole jet burner, and a gas supply module connected to the mixing air inlet pipe; wherein the gas supply module includes a compressed air valve holder and a gas valve holder connected to the mixing air inlet pipe; an electrically controlled valve is installed on the connecting pipe between the gas valve holder and the mixing air inlet pipe. This application enables strict temperature control within the furnace body according to the required heating and holding curves; the overall structure is simple, and the failure rate is significantly reduced; furthermore, through precise temperature control, when the furnace body temperature rises to the set temperature, the size of the electric ball valve can be automatically adjusted to precisely control the output of natural gas, reducing the heat output and achieving a heat preservation effect.

Description

Technical Field

[0001] This utility model relates to the technical field of metallurgical industry, and in particular to a clay torch combustion device for low-temperature uniform baking furnace. Background Technology

[0002] Typically, after prolonged use, the inner walls, bottom, and slopes of smelting furnaces and holding furnaces may become damaged or fall off, requiring re-formwork and casting. To ensure the service life of the repaired smelting furnaces and holding furnaces, the moisture in the castable is removed by gradually heating the furnace chamber, thereby improving the quality and service life of the recast material.

[0003] The existing furnace heating method uses a built-in regenerative burner torch to heat the furnace according to the furnace temperature rise curve. The disadvantages of using a burner torch are as follows:

[0004] 1. The flame size of the blowtorch cannot be adjusted.

[0005] 2. When using a burner torch for heating, there is an open flame directly burning on the side wall of the burner, which prevents the furnace from heating evenly and can easily cause the wall to crack.

[0006] 3. If the burner or torch encounters a fault that cannot be dealt with in time during the furnace heating process according to the furnace heating curve, the furnace temperature will drop too quickly and it will need to be heated again. This will make it impossible to guarantee normal heating according to the heating curve and will affect the quality of furnace heating.

[0007] 4. Direct combustion of natural gas by burners results in higher natural gas consumption per unit.

[0008] 5. If the heating and heat preservation times specified in the furnace baking curve are not strictly followed, the furnace may experience losses such as cracking after casting and a reduced service life during later use. Utility Model Content

[0009] The purpose of this invention is to provide a fire lance combustion device for low-temperature uniform furnace drying, which solves the problem of uneven heating in the furnace chamber when using burners during the furnace drying stage after the furnace body has undergone major overhaul and furnace body casting. This reduces the unit consumption of natural gas, avoids damage to newly cast areas after furnace drying, and extends the service life of the furnace body after major overhaul and furnace body casting.

[0010] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0011] This utility model provides a clay torch combustion device for a low-temperature uniform baking furnace, comprising at least one porous jet burner disposed within the furnace body, at least one temperature sensor disposed within the furnace body, a mixing air inlet pipe connected to the air inlet end of the porous jet burner, and a gas supply module connected to the mixing air inlet pipe; wherein the gas supply module includes a compressed air valve holder and a gas valve holder connected to the mixing air inlet pipe; and an electrically controlled valve is disposed on the connecting pipe between the gas valve holder and the mixing air inlet pipe.

[0012] In this embodiment, the multi-hole jet burner further includes a support for installation inside the smelting furnace body, a hollow blind tube disposed on the support, an air inlet pipe vertically connected to the middle of the hollow blind tube, and a plurality of jet holes uniformly opened on the outer wall of the hollow blind tube; wherein the gas is mixed with air and then injected for combustion to disperse the flame and improve the uniformity of heat distribution.

[0013] Furthermore, in this embodiment, multiple flame holes are radially formed on the outer wall of the hollow blind tube to facilitate all-round heating of the internal space of the smelting furnace and improve the uniformity of heat distribution.

[0014] Furthermore, in this embodiment, a multi-hole jet burner I, a multi-hole jet burner II, and a multi-hole jet burner III are respectively installed at different height positions within the smelting furnace body; the multi-hole jet burner I, the multi-hole jet burner II, and the multi-hole jet burner III are respectively connected to the compressed air valve frame and the gas valve frame through a mixing air inlet pipe; so as to improve the uniformity of heating within the space of the smelting furnace body by utilizing the multi-hole jet burners at different positions.

[0015] Furthermore in this embodiment, the compressed air valve frame is connected to the air inlet end of the mixing air inlet pipe through an air delivery pipe, and a ball valve I is provided on the air delivery pipe, wherein the air delivery pipe is a flexible hose.

[0016] Furthermore in this embodiment, the gas valve frame is connected to the inlet end of the mixing inlet pipe via a gas delivery pipe, and a pressure gauge and ball valve II are installed on the gas delivery pipe.

[0017] Furthermore in this embodiment, the gas source of the gas valve frame is one or more of natural gas, hydrogen, liquefied petroleum gas, or water gas.

[0018] Furthermore in this embodiment, the temperature sensor is electrically connected to an electrical control box, which controls the electrically controlled valve based on the temperature sensor's detection value; the electrically controlled valve is an electrically adjustable ball valve; wherein, according to the dynamic temperature control adjustment set by the electrical control box, the amount of gas entering is controlled to adjust the temperature rise inside the smelting furnace body.

[0019] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0020] 1. The temperature inside the furnace can be strictly controlled according to the required heating and holding curves;

[0021] Temperatures of 2,350℃ and below can be controlled more precisely;

[0022] 3. Due to its simple structure, this homemade fire torch can significantly reduce the failure rate, avoiding the drawbacks of the original regenerative burner, which had a long repair time and a rapid drop in furnace temperature after failure.

[0023] 4. The original regenerative burner had a large natural gas consumption and the flame could not be adjusted. This homemade fire torch has a uniform flame and consumes less natural gas. Through precise temperature control, when the temperature inside the furnace rises to the set temperature, it can automatically adjust the size of the electric ball valve to precisely control the output of natural gas, reduce the firepower, and achieve the effect of heat preservation.

[0024] 5. This fire lance has precise temperature control, reaching ±5℃. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] Figure 1 A schematic diagram of the structure of a fire lance after it is placed in a smelting furnace;

[0027] Figure 2 A schematic diagram of the structure of a firearm;

[0028] Figure 3 This is a schematic diagram of the gas supply module.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Smelting furnace body; 11. Burner; 2. Multi-hole jet burner; 21. Multi-hole jet burner I; 22. Multi-hole jet burner II; 23. Multi-hole jet burner III; 2a. Flame hole; 2b. Support; 2c. Air inlet pipe; 3. Temperature sensor; 4. Mixing air inlet pipe; 5. Gas supply module; 6. Compressed air valve frame; 61. Air delivery pipe; 62. Ball valve I; 7. Gas valve frame; 71. Gas delivery pipe; 72. Pressure gauge; 73. Ball valve II; 8. Electrically controlled valve. Detailed Implementation

[0031] refer to Figure 1This embodiment discloses a clay torch combustion device for a low-temperature uniform baking furnace, including three multi-hole jet burners installed in the furnace body 1, a temperature sensor 3 installed in the furnace body 1, a mixing air inlet pipe 4 connected to the air inlet end of the multi-hole jet burner 2, and an air supply module 5 connected to the mixing air inlet pipe 4.

[0032] The three multi-hole injector burners include multi-hole injector burner I21, multi-hole injector burner II22, and multi-hole injector burner III23 installed at different heights within the smelting furnace body 1; wherein the multi-hole injector burner I21, multi-hole injector burner II22, and multi-hole injector burner III23 are respectively connected to the compressed air valve frame 6 and the gas valve frame 7 through the mixing inlet pipe 4.

[0033] The gas supply module 5 includes a compressed air valve holder 6 and a gas valve holder 7 connected to the mixing air intake pipe 4; an electrically controlled valve 8 is installed on the connecting pipe between the gas valve holder 7 and the mixing air intake pipe 4; the temperature sensor 3 is electrically connected to an electrical control box, and the electrical control box controls the electrically controlled valve 8 based on the detection value of the temperature sensor 3; the electrically controlled valve 8 is an electrically adjustable ball valve; and the mixing air intake pipe 4 is made of a high-temperature resistant material.

[0034] refer to Figure 2 The multi-hole jet burner 2 includes a support 2b for installation inside the smelting furnace body 1, a hollow blind tube installed on the support 2b, an air inlet pipe 2c vertically connected to the middle of the hollow blind tube, and a plurality of jet holes 2a uniformly opened on the outer wall of the hollow blind tube.

[0035] In one embodiment, multiple flame holes 2a are radially formed on the outer wall of the hollow blind tube.

[0036] refer to Figure 3 The compressed air valve holder 6 is connected to the inlet end of the mixing air intake pipe 4 via an air delivery pipe 61, and a ball valve I 62 is installed on the air delivery pipe 61, which is a flexible hose. The gas valve holder 7 is connected to the inlet end of the mixing air intake pipe 4 via a gas delivery pipe 71, and a pressure gauge 72 and a ball valve II 73 are installed on the gas delivery pipe 71. In a specific implementation, the air delivery pipe 61 and the gas delivery pipe 71 are respectively connected to the mixing air intake pipe 4 via a tee.

[0037] In one embodiment, the gas source of the gas valve frame 7 is one or more of natural gas, hydrogen, liquefied petroleum gas, or water gas; the compressed air valve frame 6 can be supplied with gas through an oxygen tank or a compressed air tank, or directly through an air pump.

[0038] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Any modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A clay torch combustion device for a low-temperature uniform baking oven, characterized in that: It includes at least one porous jet burner disposed within the smelting furnace body, at least one temperature sensor disposed within the smelting furnace body, a mixing air inlet pipe connected to the air inlet end of the porous jet burner, and an air supply module connected to the mixing air inlet pipe; The gas supply module includes a compressed air valve holder and a gas valve holder connected to the mixing intake pipe; an electrically controlled valve is provided on the connecting pipe between the gas valve holder and the mixing intake pipe.

2. The soil burner for low temperature uniform baking according to claim 1, characterized in that: The multi-hole jet burner includes a support for installation inside the smelting furnace body, a hollow blind tube disposed on the support, an air inlet pipe vertically connected to the middle of the hollow blind tube, and a plurality of jet holes uniformly opened on the outer wall of the hollow blind tube.

3. The soil burner for low temperature uniform baking according to claim 2, characterized in that: Multiple flame holes are radially formed on the outer wall of the hollow blind tube.

4. The soil burner gun combustion device for low temperature uniform oven according to claim 1, characterized in that: Multi-hole jet burners I, II, and III are respectively installed at different heights within the smelting furnace body; the multi-hole jet burners I, II, and III are respectively connected to the compressed air valve frame and the gas valve frame through a mixing inlet pipe.

5. The soil burner gun combustion device for low temperature uniform oven according to claim 1, characterized in that: The compressed air valve frame is connected to the air inlet end of the mixing air inlet pipe through an air delivery pipe, and a ball valve I is installed on the air delivery pipe, which is a flexible hose.

6. The earthen torch combustion device for a low-temperature uniform baking oven according to claim 1, characterized in that: The gas valve frame is connected to the inlet end of the mixing inlet pipe via a gas delivery pipe, and a pressure gauge and ball valve II are installed on the gas delivery pipe.

7. The earthen torch combustion device for a low-temperature uniform baking oven according to claim 6, characterized in that: The gas source for the gas valve holder is one or more of natural gas, hydrogen, liquefied petroleum gas, or water gas.

8. The earthen torch combustion device for a low-temperature uniform baking oven according to claim 1, characterized in that: The temperature sensor is electrically connected to an electrical control box, which controls the electrically controlled valve based on the temperature sensor's detection value; the electrically controlled valve is an electrically adjustable ball valve.

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