Efficient low-temperature pyrolysis hot blast stove

Abstract

The utility model relates to the technical field of kilns, in particular to a high-efficiency low-temperature pyrolysis hot-blast stove, which solves the problem that the air supply volume of a hot-blast stove in the prior art cannot be adjusted, and comprises a stove body and a burner tube, the end part of the stove body is connected with an air supply box, the burner tube penetrates through the air supply box and extends into the stove body, and the end surface of the stove body is provided with a first air supply hole; an air blocking assembly used for adjusting the air quantity passing through the first air supplementing hole is arranged in the air supplementing box. The air supply device has the advantages that the air supply amount of the hot blast stove can be adjusted through the air blocking assembly, and control over the temperature of hot air output by the hot blast stove is achieved while sufficient oxygen is provided for combustion of the combustor; when the air supplement amount is large, heat generated by combustion of the combustor is absorbed by more air, the temperature of hot air exhausted by the hot blast stove is reduced, when the air supplement amount is small, heat generated by combustion of the combustor is absorbed by less air, the temperature of the hot air exhausted by the hot blast stove is increased, and adjustment of the temperature of the hot air exhausted by the hot blast stove is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of kilns, in particular to a high-efficiency low-temperature pyrolysis hot blast furnace. Background Art

[0002] A pyrolysis kiln is a device used for harmless treatment of solid waste. It mainly decomposes waste into harmless substances by heating the waste to a certain temperature and decomposing it under oxygen-deficient or oxygen-free conditions. In this process, the organic matter in the waste is converted into combustible gas, liquid and solid, while the non-combustible matter is decomposed into stable inorganic matter. The pyrolysis kiln is heated by a hot air furnace, that is, the hot air generated by the hot air furnace is introduced into the pyrolysis kiln for heating. In the actual working process, the heat generated by the hot air furnace is slowly transmitted, causing the pyrolysis kiln to take a long time to reach the required temperature.

[0003] The patent with publication number CN220582743U discloses a new type of hot air furnace for a rotary dryer, including a steel structure furnace body, the inner wall of which is fixedly connected to a refractory brick layer, a thermocouple is installed on the steel structure furnace body, the bottom of which penetrates and extends to the interior of the refractory brick layer, a flange is fixedly connected to the left side of the steel structure furnace body, a burner tube fixedly connected to the steel structure furnace body is inserted on the right side of the steel structure furnace body, the left end of the burner tube penetrates and extends to the interior of the refractory brick layer, an interlayer air cavity is fixedly connected to the right side of the steel structure furnace body, the interlayer air cavity is cylindrical in shape, an air inlet pipe connected to the interlayer air cavity is fixedly connected to the front side of the interlayer air cavity, an annularly distributed air inlet hole is opened on the left side of the interlayer air cavity, and an air supply hole matching the air inlet hole is opened on the right side of the refractory brick layer. The interlayer air cavity introduces air into the steel structure furnace body through the air supply holes for air supply. However, in actual use, the temperature of the hot blast stove needs to be controlled. The size of the air supply holes will affect the temperature of the hot air output by the hot blast stove. However, the above-mentioned hot blast stove cannot adjust the air supply volume, and cannot achieve control of the temperature of the hot blast stove. Utility Model Content

[0004] The utility model provides a high-efficiency low-temperature pyrolysis hot blast furnace, which solves the problem in the prior art that the air supply volume of the hot blast furnace cannot be adjusted.

[0005] The technical solution of the utility model is achieved in this way:

[0006] A high-efficiency low-temperature pyrolysis hot air furnace comprises a furnace body and a burner pipe, the end of the furnace body is connected to an air supply box, the burner pipe passes through the air supply box and extends into the furnace body, a first air supply hole is arranged on the end face of the furnace body, and a wind shield assembly for adjusting the air volume passing through the first air supply hole is arranged in the air supply box. The opening size of the first air supply hole can be adjusted by the wind shield assembly, thereby adjusting the air supply volume, which is convenient for controlling the temperature of the hot air furnace. Specifically, when the air supply volume is large, the heat generated by the burner is absorbed by more air, thereby reducing the temperature of the hot air discharged from the hot air furnace.

[0007] The wind shield assembly includes a wind shield plate, which is rotatably arranged in the air supply box, and a second air supply hole is arranged on the wind shield plate. The wind shield plate can be rotated to adjust the relative position of the first air supply hole and the second air supply hole. When the first air supply hole and the second air supply hole are misaligned, the wind shield plate blocks the first air supply hole to reduce the amount of air supply. When the first air supply hole and the second air supply hole are in corresponding positions, the first air supply hole is fully opened to increase the amount of air supply.

[0008] The inner wall of the air supply box is provided with a boss for axially limiting the wind shield plate. The boss limits the wind shield plate to ensure that the wind shield plate is stably installed in the air supply box.

[0009] The first air supply holes are arranged in a circular array on the end surface of the furnace body with the burner tube as the center, so that air enters the hot air furnace more evenly through the first air supply holes, reducing the impact of air supply on the burner flame.

[0010] The side of the air supply box is provided with an air inlet pipe, and a filter is provided in the air inlet pipe. Air enters the air supply box through the air inlet pipe, and then enters the hot air furnace through the air supply hole. The filter can filter the passing air to prevent dust from affecting the inside of the device.

[0011] The filter screen is slidably arranged in the air intake pipe, and the filter screen is movably connected to the wind shield plate. The movement of the filter screen in the air intake pipe can drive the wind shield plate to move, thereby adjusting the relative position of the first air supply hole and the second air supply hole.

[0012] The windshield is provided with a connecting column, a connecting rod is movably connected to the connecting column, and the connecting rod is hinged to the filter screen. The filter screen drives the windshield to rotate through the connecting rod.

[0013] The furnace body is provided with a flow guide component which fully mixes the heat generated by the burner with the air entering the hot blast furnace to ensure that the temperature of the output hot blast is more uniform.

[0014] The guide assembly includes a support frame fixedly arranged inside the furnace body, and a fan blade is rotatably arranged on the support frame. The hot air flowing in the hot air furnace can drive the fan blade to rotate, and the rotation of the fan blade will stir the air flow to mix, thereby making the heat of the hot air more uniform.

[0015] The furnace body is provided with a flange at the air outlet; a refractory layer is provided on the inner wall of the furnace body. The flange is connected to the hot air duct, and the hot air discharged from the hot air furnace is passed into the pyrolysis kiln for drying, ensuring the smooth progress of the pyrolysis process; the refractory layer effectively improves the refractory performance of the furnace body and ensures the service life of the hot air furnace.

[0016] The beneficial effects of the utility model are as follows: the amount of make-up air for the hot blast stove can be adjusted through the wind shield component, and while providing sufficient oxygen for the burner to burn, the temperature of the hot air output by the hot blast stove can be controlled; when the amount of make-up air is large, the heat generated by the burner combustion is absorbed by more air, thereby reducing the temperature of the hot air discharged from the hot blast stove; when the amount of make-up air is small, the heat generated by the burner combustion is absorbed by less air, thereby increasing the temperature of the hot air discharged from the hot blast stove, thereby achieving the adjustment of the temperature of the hot air discharged from the hot blast stove.

[0017] The movement of the filter in the air intake pipe can drive the wind shield to move, thereby adjusting the relative positions of the first air supply hole and the second air supply hole, and then adjusting the opening degree of the first air supply hole and adjusting the air supply volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a front view of a high-efficiency low-temperature pyrolysis hot air furnace of the utility model;

[0020] Figure 2 A cross-sectional view of a high-efficiency low-temperature pyrolysis hot air furnace;

[0021] Figure 3 Cutaway view of the bellows Figure 1 ;

[0022] Figure 4 Cutaway view of the bellows Figure 2 .

[0023] In the figure: 1, furnace body, 11, support, 2, refractory layer, 3, flange, 4, guide assembly, 41, support frame, 42, fan blade, 5, first air supply hole, 6, burner pipe, 7, air supply box, 71, boss, 72, air inlet pipe, 73, filter, 74, connecting rod, 8, wind shield, 81, connecting column, 82, second air supply hole. DETAILED DESCRIPTION

[0024] 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.

[0025] Embodiment 1, as Figure 1 As shown, a high-efficiency low-temperature pyrolysis hot air furnace includes a furnace body 1 and a burner tube 6. The end of the furnace body 1 is connected to an air supply box 7. The burner tube 6 extends into the furnace body 1 through the air supply box 7. A first air supply hole 5 is provided on the end face of the furnace body 1. The air supply box 7 is provided with a wind shield component for adjusting the amount of air passing through the first air supply hole 5. The burner pipe 6 is used to install the burner. The air supply box 7 is connected to the blower. The blower passes air into the air supply box 7, and then enters the hot blast furnace body 1 through the first air supply hole 5 to provide sufficient oxygen for the combustion of the fuel. The first air supply hole 5 is shielded by the wind shield component, and the opening degree of the first air supply hole 5 is adjusted to adjust the air supply volume. Specifically, when the air supply volume is large, more air enters the furnace body 1, and more air absorbs the heat generated by the combustion of the burner, thereby reducing the temperature of the hot air discharged from the hot blast furnace. When the air supply volume is small, less air enters the furnace body 1, and less air absorbs heat, thereby improving the stability of the hot air discharged from the hot blast furnace and realizing the adjustment of the hot blast furnace discharge temperature. In this embodiment, the air supply box 7 is welded to the end of the furnace body 1 to ensure the sealing of the connection between the air supply box 7 and the furnace body 1.

[0026] Further, if Figure 3 , Figure 4 As shown, the wind shield assembly includes a wind shield 8, which is rotatably arranged in the air supply box 7, and a second air supply hole 82 is provided on the wind shield 8. The rotation of the wind shield 8 can adjust the relative position of the first air supply hole 5 and the second air supply hole 82. When the first air supply hole 5 and the second air supply hole 82 are misaligned, the wind shield 8 blocks the first air supply hole 5 to reduce the amount of air supply. When the first air supply hole 5 and the second air supply hole 82 are in the same position, the first air supply hole 5 is fully opened to increase the amount of air supply. A boss 71 for axially limiting the wind shield 8 is provided on the inner wall of the air supply box 7. The boss 71 axially limits the wind shield 8 to ensure that the wind shield 8 is stably installed in the air supply box 7, and at the same time, the wind shield 8 fits the end face of the furnace body 1, ensuring that the wind shield 8 can effectively block the first air supply hole 5 and the second air supply hole 82 when the first air supply hole 5 is misaligned.

[0027] Furthermore, the first air supply holes 5 are arranged in a circular array on the end surface of the furnace body 1 with the burner tube 6 as the center. In this embodiment, the number of the first air supply holes 5 is 6, and the first air supply holes 5 are evenly arranged around the burner tube 6, so that the air enters the hot blast furnace more evenly through the first air supply holes 5, reducing the impact of air supply on the burner flame.

[0028] Furthermore, an air inlet pipe 72 is provided on the side of the air supply box 7, and a filter screen 73 is provided in the air inlet pipe 72. Air enters the air supply box 7 through the air inlet pipe 72, and then enters the hot air furnace through the air supply hole. The filter screen 73 can filter the passing air to prevent dust from affecting the inside of the device.

[0029] Furthermore, the filter screen 73 is slidably arranged in the air inlet pipe 72, and the filter screen 73 is movably connected to the wind shield 8. The wind shield 8 is provided with a connecting column 81, and a connecting rod 74 is movably connected to the connecting column 81, and the connecting rod 74 is hinged to the filter screen 73. The movement of the filter screen 73 in the air inlet pipe 72 can drive the wind shield 8 to move, thereby adjusting the relative position of the first air supply hole 5 and the second air supply hole 82, and then adjusting the opening degree of the first air supply hole 5, and adjusting the air supply volume.

[0030] Example 2, based on Example 1, a high-efficiency low-temperature pyrolysis hot air furnace, such as Figure 2 As shown, a flow guide component 4 is provided in the furnace body 1. The flow guide component 4 fully mixes the heat generated by the burner with the air entering the hot blast furnace to ensure that the temperature of the output hot blast is more uniform. When the burner burns and generates heat, there will be a situation where the air at the center of the hot blast furnace carries more heat and the air at the periphery of the hot blast furnace carries less heat. The flow guide component 4 stirs the air in the hot blast furnace to make the air in the hot blast furnace more fully mixed and the temperature of the hot blast output from the hot blast furnace is more uniform.

[0031] Further, the guide assembly 4 includes a support frame 41 fixedly arranged inside the furnace body 1, and a fan blade 42 is rotatably arranged on the support frame 41. The hot air flowing in the hot air furnace can drive the fan blade 42 to rotate, and the rotation of the fan blade 42 will stir the air and mix it, thereby making the heat of the hot air more uniform.

[0032] Furthermore, a flange 3 is provided at the air outlet of the furnace body 1; the flange 3 is connected to the hot air duct, and the hot air discharged from the hot blast furnace is passed into the pyrolysis kiln for drying, thereby ensuring the smooth progress of the pyrolysis process; a refractory layer 2 is provided on the inner wall of the furnace body 1, and the refractory layer 2 effectively improves the refractory performance of the furnace body and ensures the service life of the hot blast furnace.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-efficiency low-temperature pyrolysis hot air furnace, comprising a furnace body (1) and a burner tube (6), characterized in that: An air supply box (7) is connected to the end of the furnace body (1), and the burner pipe (6) passes through the air supply box (7) and extends into the furnace body (1). A first air supply hole (5) is provided on the end surface of the furnace body (1), and a wind shield component for adjusting the amount of air passing through the first air supply hole (5) is provided in the air supply box (7).

2. The high-efficiency low-temperature pyrolysis hot air furnace according to claim 1, characterized in that: The wind shield assembly comprises a wind shield plate (8), the wind shield plate (8) being rotatably disposed in the air supply box (7), and a second air supply hole (82) being provided on the wind shield plate (8).

3. The high-efficiency low-temperature pyrolysis hot air furnace according to claim 2, characterized in that: A boss (71) for axially limiting the wind shield (8) is provided on the inner wall of the air supply box (7).

4. The high-efficiency low-temperature pyrolysis hot air furnace according to claim 3, characterized in that: The first air supply holes (5) are arranged in a circular array on the end surface of the furnace body (1) with the burner tube (6) as the center.

5. The high-efficiency low-temperature pyrolysis hot air furnace according to claim 4, characterized in that: An air inlet pipe (72) is provided on the side of the air supply box (7), and a filter screen (73) is provided inside the air inlet pipe (72).

6. The high-efficiency low-temperature pyrolysis hot air furnace according to claim 5, characterized in that: The filter screen (73) is slidably arranged in the air inlet pipe (72), and the filter screen (73) is movably connected to the wind shield (8).

7. The high-efficiency low-temperature pyrolysis hot air furnace according to claim 6, characterized in that: A connecting column (81) is provided on the wind shield (8), a connecting rod (74) is movably connected to the connecting column (81), and the connecting rod (74) is hinged to the filter screen (73).

8. The high-efficiency low-temperature pyrolysis hot air furnace according to any one of claims 1 to 7, characterized in that: A flow guide component (4) is provided in the furnace body (1).

9. The high-efficiency low-temperature pyrolysis hot air furnace according to claim 8, characterized in that: The flow guide assembly (4) comprises a support frame (41) fixedly arranged inside the furnace body (1), and a fan blade (42) is rotatably provided on the support frame (41).

10. The high-efficiency low-temperature pyrolysis hot air furnace according to claim 1 or 9, characterized in that: A flange (3) is provided at the air outlet of the furnace body (1); and a refractory layer (2) is provided on the inner wall of the furnace body (1).

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