Preheating energy-saving structure of industrial kiln

Abstract

The utility model provides a kind of preheating energy-saving structure of industrial kiln, comprising: preheating component, including preheating heat-insulating outer box, air inlet main guide pipe, air inlet elbow, air inlet communication pipe and material sliding seat in the preheating component, compared with prior art, the utility model has the beneficial effects as follows: by increasing preheating component and material distribution component, high-temperature flue gas is guided by air inlet main guide pipe, then is guided to several groups of material sliding seat by air inlet communication pipe to realize distribution, material required by industrial kiln combustion is guided by material inlet guide pipe, then is distributed to the left side of each group of material sliding seat by distribution guide pipe, heat exchange is realized in the material sliding to right side, to reach the purpose of preheating, so as to improve the heat exchange preheating effect, by increasing preheating component, in the material sliding seat to material natural sliding, fixed frequency control knock cylinder drives knock column to move up and down, complete the knock vibration to material sliding seat, so as to assist the sliding of material.

Description

Technical Field

[0001] This utility model belongs to the field of industrial equipment technology, and specifically relates to a preheating and energy-saving structure for industrial kilns. Background Technology

[0002] Industrial kilns are crucial thermal equipment in industries such as metallurgy, building materials, ceramics, and chemicals. They are primarily used for high-temperature processes such as calcination, melting, and heat treatment of materials. Common industrial kilns include rotary kilns, tunnel kilns, shuttle kilns, and smelting furnaces. These kilns consume significant amounts of energy during operation, accounting for 20%-40% or even higher of total production costs. The use of industrial kilns generates large quantities of high-temperature flue gas, which contains numerous harmful substances and typically requires a series of treatments before emission. Modern production also utilizes the waste heat of this high-temperature flue gas to reduce industrial production costs and achieve energy conservation and emission reduction. However, in current technologies, the high-temperature flue gas is mostly preheated through a single pipeline, where it is centrally transported and exchanges heat with the materials used for combustion in the kiln. However, due to the large quantity and volume of the materials, effective and uniform heat exchange is difficult to achieve. This can result in materials concentrated in the center not being effectively preheated, potentially leading to incomplete combustion during subsequent combustion.

[0003] In summary, we hope to propose a new structure to solve the aforementioned technical problems. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a preheating and energy-saving structure for industrial kilns, and to solve the problems mentioned in the background technology.

[0005] This utility model is achieved through the following technical solution: a preheating and energy-saving structure for an industrial kiln, comprising: a preheating component, wherein the preheating component includes a preheating and heat-insulating outer casing, an air inlet main pipe, an air inlet bend, an air inlet connecting pipe, and a material conveying seat;

[0006] The preheating and heat-insulating outer casing is fixedly connected to the left side of an air intake main pipe for introducing high-temperature flue gas to achieve heat exchange. An air intake bend is fixedly connected to the right side of the air intake main pipe, and an air intake connecting pipe for distributing high-temperature flue gas is fixedly connected to the lower side of the air intake bend.

[0007] The preheating, heat insulation and heat-insulating outer box has several sets of material conveying seats evenly distributed front and back on its inner side for guiding the combustion materials of the industrial kiln. A material distributing component for uniformly distributing materials is installed on the upper left of the preheating, heat insulation and heat-insulating outer box. The material distributing component includes an inlet conduit and a distributing conduit. Several distributing conduits are fixedly connected below the inlet conduit.

[0008] In a preferred embodiment, a valve is installed in the middle section of the main air intake pipe, an air outlet duct is fixedly connected to the right side of the preheating and heat insulation outer casing, and the left side of the main air intake pipe is fixedly connected to the flue gas emission section of the industrial kiln.

[0009] In a preferred embodiment, a heat exchange chamber is provided on the inner side of the material conveyor seat, and the left end of the material conveyor seat is connected to the air inlet connecting pipe. The high-temperature flue gas generated by the industrial kiln is guided by the main air inlet pipe and distributed to several sets of heat exchange chambers through the air inlet connecting pipe.

[0010] In a preferred embodiment, the material conveyor is configured with an inclined structure that is higher on the left and lower on the right, and the material conveyor has an arc structure with a ceramic coating on both its inner and outer sides.

[0011] In a preferred embodiment, the number of material conveying seats is the same as the number of distributing conduits, and each set of distributing conduits is provided with a set of material conveying seats located directly above its left end.

[0012] In a preferred embodiment, a material conveying seat is fixedly connected to the middle section of the feed conduit. The material conveying seat has a hollow structure and a guide shaft is rotatably connected to its axis. Several sets of guide blades for controlling the falling speed of the material are fixedly connected to the outside of the guide shaft. According to the actual production control, the motor drives the guide shaft to have different speeds, thereby driving the guide blades to control different falling rates of the material.

[0013] In a preferred embodiment, a striking cylinder is fixedly connected to the lower inner side of the preheating and heat-insulating outer casing, a metal corrugated pipe is fixedly connected to the outer side of the telescopic section of the striking cylinder, and a heat insulation cover is fixedly connected below the metal corrugated pipe.

[0014] In a preferred embodiment, a striking link is fixedly connected above the striking cylinder, and a set of striking columns is fixedly connected above the striking link for each set of material conveyors. During the natural sliding of materials by the material conveyors, the striking cylinder is controlled at a fixed frequency to drive the striking columns to move up and down, thereby completing the striking vibration of the material conveyors and assisting in the sliding of materials.

[0015] After adopting the above technical solution, the beneficial effects of this utility model are:

[0016] 1. By adding preheating components and material distribution components, high-temperature flue gas is guided through the main inlet pipe and then distributed to several groups of material conveyors through the inlet connecting pipe. The materials required for combustion in the industrial kiln are guided through the feed pipe and then distributed to the left side of each group of material conveyors through the distribution pipe. Heat exchange is achieved during the material sliding to the right to achieve the purpose of preheating, thereby improving the heat exchange and preheating effect.

[0017] 2. By adding a preheating component, during the natural sliding of materials by the material conveyor, the frequency of the striking cylinder is controlled to drive the striking column to move up and down, thereby completing the striking vibration of the material conveyor and thus assisting the sliding of materials. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of a preheating and energy-saving structure for an industrial kiln according to the present invention.

[0020] Figure 2 This is a schematic diagram of the preheating component in the preheating and energy-saving structure of an industrial kiln according to this utility model.

[0021] Figure 3 This is a partial cross-sectional schematic diagram of the preheating component in the preheating and energy-saving structure of an industrial kiln according to this utility model.

[0022] Figure 4 This is a schematic diagram of the material distribution component in the preheating and energy-saving structure of an industrial kiln according to this utility model.

[0023] Figure 5 This is a partial cross-sectional schematic diagram of the material distribution component in the preheating and energy-saving structure of an industrial kiln according to this utility model.

[0024] In the diagram, 100-preheating component, 101-preheating insulation outer casing, 102-main air inlet pipe, 103-valve, 104-air outlet pipe, 105-material conveyor seat, 106-air inlet bend, 107-air inlet connecting pipe, 108-impact cylinder, 109-impact column, 110-heat insulation cover, 111-metal corrugated pipe, 112-heat exchange chamber;

[0025] 200-Material distribution assembly, 201-Infeed conduit, 202-Material guide seat, 203-Distribution conduit, 204-Guide shaft, 205-Guide blade. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-5 As the first embodiment of this utility model:

[0028] A preheating energy-saving structure for an industrial kiln includes: a preheating component 100, which includes a preheating insulation outer casing 101, an air inlet main pipe 102, an air inlet bend 106, an air inlet connecting pipe 107, and a material conveying seat 105.

[0029] The preheating and heat insulation outer casing 101 is fixedly connected to the left side of an air intake main pipe 102 for introducing high-temperature flue gas to achieve heat exchange. An air intake bend pipe 106 is fixedly connected to the right side of the air intake main pipe 102. An air intake connecting pipe 107 for distributing high-temperature flue gas is fixedly connected to the lower side of the air intake bend pipe 106.

[0030] The inner side of the preheating and heat-insulating outer casing 101 is evenly distributed with several sets of material conveying seats 105 for guiding the combustion materials of industrial kilns. A material distribution component 200 for uniformly distributing materials is installed on the upper left of the preheating and heat-insulating outer casing 101. The material distribution component 200 includes an inlet conduit 201 and a distribution conduit 203. Several sets of distribution conduits 203 are fixedly connected below the inlet conduit 201.

[0031] A valve 103 is installed in the middle section of the main intake pipe 102. An exhaust pipe 104 is fixedly connected to the right side of the preheating and heat insulation outer casing 101. The left side of the main intake pipe 102 is fixedly connected to the flue gas emission section of the industrial kiln.

[0032] A heat exchange chamber 112 is provided on the inner side of the material conveyor seat 105. The left end of the material conveyor seat 105 is connected to the air inlet connecting pipe 107. The high-temperature flue gas generated by the industrial kiln is guided through the main air inlet pipe 102 and distributed to several sets of heat exchange chambers 112 through the air inlet connecting pipe 107.

[0033] The material conveyor 105 is an inclined structure with the left side higher than the right side. The material conveyor 105 has an arc structure and its inner and outer sides are coated with ceramic.

[0034] The number of material conveyor seats 105 is the same as the number of distribution conduits 203. Each distribution conduit 203 is provided with a set of material conveyor seats 105 and is located directly above its left end.

[0035] A material guide seat 202 is fixedly connected to the middle section of the feed conduit 201. The material guide seat 202 has a hollow structure and a guide shaft 204 is rotatably connected to its axis. Several sets of guide blades 205 for controlling the falling speed of the material are fixedly connected to the outside of the guide shaft 204. According to the actual production control, the motor drives the guide shaft 204 to have different speeds, which in turn drives the guide blades 205 to control the falling speed of the material.

[0036] Specifically, the high-temperature flue gas generated by the industrial kiln is guided through the main inlet pipe 102, then through the inlet bend pipe 106 into the inlet connecting pipe 107, and then distributed to several heat exchange chambers 112 through the inlet connecting pipe 107. The pipeline can be controlled by valve 103. Secondly, the materials required for combustion in the industrial kiln are guided through the feed pipe 201. According to the actual production (such as material specifications, material type, production efficiency, etc.), the motor drives the guide shaft 204 to have different speeds, which in turn drives the guide vanes 205 to control different falling rates of the materials. After falling, the materials are distributed through several groups of distribution pipes 203 and fall into the upper left of different material slide seats 105 at the end. The material slide seats 105 with the inclined structure naturally slide to the right. Because the amount of material in each group is reduced, the amount of material accumulation is reduced, thereby improving the heat exchange and preheating effect.

[0037] Please see Figures 1-3 As a second embodiment of this utility model:

[0038] A striking cylinder 108 is fixedly connected to the lower inner side of the preheating and heat-insulating outer casing 101. A metal bellows 111 is fixedly connected to the outer side of the telescopic section of the striking cylinder 108. A heat insulation cover 110 is fixedly connected below the metal bellows 111.

[0039] A striking link is fixedly connected above the striking cylinder 108. A set of striking columns 109 is fixedly connected above each set of material conveyors 105. During the natural sliding of materials by the material conveyors 105, the striking cylinder 108 is controlled at a fixed frequency to drive the striking columns 109 to move up and down, thereby completing the striking vibration of the material conveyors 105 and assisting in the sliding of materials.

[0040] Based on the first embodiment described above, further, during the natural sliding of materials by the material conveyor 105, the striking cylinder 108 is controlled at a fixed frequency (e.g., according to the type and specifications of the material) to drive the striking column 109 to move up and down, thereby completing the striking vibration of the material conveyor 105. This can assist in the sliding of materials and prevent materials from getting stuck for a long time. Moreover, the striking cylinder 108 is sealed and protected by the heat insulation cover 110, which improves its service life.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A preheating and energy-saving structure for an industrial kiln, comprising: The preheating assembly (100) is characterized in that: the preheating assembly (100) includes a preheating insulation outer casing (101), an air intake main pipe (102), an air intake bend (106), an air intake connecting pipe (107), and a material conveying seat (105); The preheating and heat insulation outer casing (101) is fixedly connected to the left side of an air intake main pipe (102) for introducing high-temperature flue gas to achieve heat exchange. The air intake main pipe (102) is fixedly connected to the right side of an air intake bend pipe (106). The air intake bend pipe (106) is fixedly connected to the lower side of an air intake connecting pipe (107) for distributing high-temperature flue gas. The preheating and heat insulation outer casing (101) has several sets of material conveying seats (105) evenly distributed front and back on the inner side for guiding the combustion materials of industrial kilns. The preheating and heat insulation outer casing (101) has a material distribution assembly (200) installed on the upper left side for uniformly distributing materials. The material distribution assembly (200) includes an inlet conduit (201) and a distribution conduit (203). Several distribution conduits (203) are fixedly connected below the inlet conduit (201).

2. The preheating and energy-saving structure for an industrial kiln as described in claim 1, characterized in that: A valve (103) is installed in the middle section of the main air intake pipe (102), an air outlet pipe (104) is fixedly connected to the right side of the preheating and heat insulation outer casing (101), and the left side of the main air intake pipe (102) is fixedly connected to the flue gas emission section of the industrial kiln.

3. The preheating and energy-saving structure for an industrial kiln as described in claim 2, characterized in that: A heat exchange chamber (112) is provided on the inner side of the material conveying seat (105), and the left end of the material conveying seat (105) is connected to the air inlet pipe (107).

4. The preheating and energy-saving structure for an industrial kiln as described in claim 3, characterized in that: The material conveyor (105) is an inclined structure with the left side higher than the right side. The material conveyor (105) is an arc-shaped structure and has a ceramic coating on both its inner and outer sides.

5. The preheating and energy-saving structure for an industrial kiln as described in claim 1, characterized in that: The number of material conveying seats (105) is the same as the number of distributing conduits (203). Each set of distributing conduits (203) is set with a corresponding set of material conveying seats (105) and is located directly above its left end.

6. The preheating and energy-saving structure for an industrial kiln as described in claim 5, characterized in that: The material feeding conduit (201) is fixedly connected to a material conveying seat (202) in the middle section. The material conveying seat (202) is a hollow structure and a guide shaft (204) is rotatably connected to its axis. Several sets of guide blades (205) for controlling the falling speed of the material are fixedly connected to the outside of the guide shaft (204).

7. The preheating and energy-saving structure for an industrial kiln as described in claim 1, characterized in that: A striking cylinder (108) is fixedly connected to the lower inner side of the preheating and heat insulation outer casing (101). A metal corrugated pipe (111) is fixedly connected to the outer side of the telescopic section of the striking cylinder (108). A heat insulation cover (110) is fixedly connected below the metal corrugated pipe (111).

8. The preheating and energy-saving structure for an industrial kiln as described in claim 7, characterized in that: A striking link is fixedly connected above the striking cylinder (108), and a set of striking columns (109) is fixedly connected above the striking link for each set of material conveyor seats (105).

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