Rotary cement kiln with waste heat recovery function

Abstract

The utility model relates to the technical field of rotary cement kilns, and discloses a rotary cement kiln with a waste heat recovery function, which is characterized in that the upper end of a base is fixedly connected with a rotary kiln main body, the right end of the rotary kiln main body is connected with a feeding box in a sliding manner, and the upper end of the feeding box is fixedly connected with a feeding port; according to the rotary cement kiln with the waste heat recovery function, by arranging the waste heat recovery mechanism, when a connecting rod rotates upwards, a swing plate is driven to swing back and forth, high-temperature gas is scattered, turbulent flow is formed, and the waste heat recovery function is achieved; and high-temperature gas can be uniformly diffused in the feeding box, raw materials are rapidly dried, and the situation that in the humid weather, the cement raw materials are likely to be in contact with humid air and become humid and viscous, the raw materials adhere together and form cakes, and then the quality of cement finished products is affected is avoided.

Description

Technical Field

[0001] This utility model relates to the field of cement rotary kiln technology, specifically a cement rotary kiln with waste heat recovery function. Background Technology

[0002] A rotary kiln is a key piece of equipment in cement production, belonging to a type of rotating cylindrical calcining kiln. Installed at a certain angle, it rotates slowly during production, allowing the raw cement meal inside to continuously tumble and be heated evenly. Through a series of physicochemical changes, it completes the calcination process from raw meal to clinker, playing a crucial role in the formation of cement quality.

[0003] When the weather is humid, cement raw materials are easily exposed to moist air, which makes them damp and viscous. Existing cement rotary kilns do not have waste heat recovery functions, making it difficult to quickly dry the damp raw materials. This causes the damp raw materials to stick together and form lumps, which affects the mixing and processing of raw materials and the quality of the finished cement product. Therefore, a cement rotary kiln with waste heat recovery function is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a cement rotary kiln with waste heat recovery function to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cement rotary kiln with waste heat recovery function, comprising a base, a rotary kiln body fixedly connected to the upper end of the base, a burner fixedly connected to the left end of the rotary kiln body, a feeding box slidably connected to the right end of the rotary kiln body, an inlet fixedly connected to the upper end of the feeding box, a waste heat recovery mechanism for drying auxiliary raw materials being provided inside the feeding box, and a baffle mechanism to prevent raw material overflow being provided inside the inlet. The waste heat recovery mechanism includes:

[0006] The exhaust pipe has its left end fixedly connected to the rotary kiln body, and its left end passes through the left side of the feed box, with a fixed connection at the point of penetration.

[0007] An impeller is rotatably connected to the inner wall of the feeding box, and a protrusion is fixedly connected to the right side of the impeller.

[0008] Preferably, a hollow block is slidably connected to the right side of the impeller. The inner wall of the hollow block is on the outer wall of the protrusion. A moving rod is fixedly connected to the upper end of the hollow block. A clearing rod is fixedly connected to the right side of the upper end of the moving rod. By setting the clearing rod, when the moving rod moves downward, it drives the clearing rod to move, so that the clearing rod guides the material to the feed inlet. This prevents the raw material from easily sticking together and forming clumps after it becomes wet. If the clumps are too large, they can easily get stuck on the inner wall of the feed inlet, blocking the feed inlet and making it difficult for the raw material to flow, thereby affecting the working efficiency of the rotary kiln.

[0009] Preferably, a movable block is fixedly connected to the lower end of the movable rod, and a connecting rod is rotatably connected to the right side of the movable block. A connecting block is fixedly connected to the inner wall of the front side of the feeding box, and a swing plate is hinged to the inner side of the connecting block. By setting the swing plate, when the movable block moves upward, it drives the connecting rod to rotate upward, causing the swing plate to swing back and forth, and disperses the high-temperature gas to form turbulence. This allows the high-temperature gas to diffuse evenly inside the feeding box, quickly drying the raw materials. This prevents the cement raw materials from becoming damp and sticky after contacting the humid air in humid weather, which would cause the raw materials to stick together and form clumps, thus affecting the mixing and processing of the raw materials and affecting the quality of the finished cement product. The front end of the connecting rod is hinged to the outer wall of the swing plate.

[0010] Preferably, a hinge block is fixedly connected to the lower end of the unblocking rod, and a rotating rod is slidably connected to the inner wall of the hinge block. A baffle plate is hinged to the front end of the rotating rod. By setting the baffle plate, when the hinge block moves upward, it pulls the rotating rod to move inward, causing the baffle plate to move and block the feed inlet. This prevents the air velocity inside the feeding box from being too high, which could easily blow smaller raw materials out of the feeding box, causing the raw material particles to pollute the air at the work site and thus affecting the health of the workers on site. The baffle plate penetrates the inner wall of the feed inlet and is slidably connected at the penetration point.

[0011] Preferably, the baffle is provided in two sets, and is symmetrically arranged with the center line of the vertical direction of the feed inlet as the axis of symmetry.

[0012] Preferably, the unblocking rod is L-shaped.

[0013] Compared with the prior art, this utility model provides a cement rotary kiln with waste heat recovery function, which has the following beneficial effects:

[0014] 1. This cement rotary kiln with waste heat recovery function is equipped with a waste gas pipe, impeller, protrusion, hollow block, moving rod, unblocking rod, movable block, connecting rod, connecting block, and swing plate. When the movable block moves upward, it pulls the connecting rod upward to rotate, causing the swing plate to swing back and forth. This allows the swing plate to disperse the high-temperature gas and form turbulence, so that the high-temperature gas can be evenly diffused inside the feeding box, quickly drying the raw materials. This avoids the cement raw materials from becoming damp and sticky after contact with humid air in humid weather, which can cause the raw materials to stick together and form lumps, thus affecting the mixing and processing of raw materials and the quality of the finished cement product.

[0015] 2. This cement rotary kiln with waste heat recovery function is equipped with a hinge block, a rotating rod, and a baffle plate. When the unblocking rod moves upward, it drives the hinge block to move upward and pulls the rotating rod to move inward, which in turn moves the baffle plate to block the feed inlet. This prevents the air velocity inside the feed box from being too high, which could easily blow smaller raw materials out of the feed box and cause the raw material particles to pollute the air at the work site, thereby affecting the health of the on-site workers. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 3 This is a side sectional view of the present invention.

[0019] Figure 4 This utility model Figure 3 Enlarged structural diagram of point A.

[0020] In the diagram: 1. Base; 2. Rotary kiln body; 3. Burner; 4. Feed box; 5. Feed inlet; 6. Waste heat recovery mechanism; 61. Exhaust pipe; 62. Impeller; 63. Protrusion; 64. Hollow block; 65. Moving rod; 66. Unblocking rod; 67. Movable block; 68. Connecting rod; 69. Connecting block; 610. Swing plate; 7. Baffle mechanism; 71. Hinge block; 72. Rotating rod; 73. Baffle plate. Detailed Implementation

[0021] like Figures 1-4As shown, this utility model provides a technical solution: a cement rotary kiln with waste heat recovery function, including a base 1, a rotary kiln body 2 fixedly connected to the upper end of the base 1, a burner 3 fixedly connected to the left end of the rotary kiln body 2, a feeding box 4 slidably connected to the right end of the rotary kiln body 2, a feed inlet 5 fixedly connected to the upper end of the feeding box 4, a waste heat recovery mechanism 6 for drying auxiliary raw materials is provided inside the feeding box 4, and a baffle mechanism 7 for preventing raw materials from overflowing is provided inside the feed inlet 5.

[0022] The aforementioned waste heat recovery mechanism 6 includes: a waste gas pipe 61, an impeller 62, a protrusion 63, a hollow block 64, a moving rod 65, a clearing rod 66, a movable block 67, a connecting rod 68, a connecting block 69, and a swing plate 610. The left end of the waste gas pipe 61 is fixedly connected to the rotary kiln body 2, and the left end of the waste gas pipe 61 passes through the left side of the feed box 4, with a fixed connection at the penetration point. The impeller 62 is rotatably connected to the inner wall of the feed box 4. By setting the impeller 62, when the impeller 62 is blown by the high-temperature waste gas and rotates, the impeller 62 can drive the hollow block 64 to reciprocate, so that the clearing rod 66 can reciprocate. The feed inlet 5 is repeatedly dredged to prevent raw materials from sticking to its inner wall, thus avoiding material accumulation and allowing them to flow more smoothly into the feed box 4. This improves the flowability of the raw materials and reduces blockages. A protrusion 63 is fixedly connected to the right side of the impeller 62, and a hollow block 64 is slidably connected to the right side of the impeller 62. The inner wall of the hollow block 64 is the outer wall of the protrusion 63. A moving rod 65 is fixedly connected to the upper end of the hollow block 64, and a dredging rod 66 is fixedly connected to the right side of the upper end of the moving rod 65. The dredging rod 66 is L-shaped. By setting up a dredging rod... When the moving rod 65 moves downward, it drives the unblocking rod 66 to move, allowing the unblocking rod 66 to guide the material through the feed inlet 5. This prevents the raw material from easily sticking together and forming clumps after it becomes damp. If the clumps are too large, they can easily get stuck on the inner wall of the feed inlet 5, blocking the feed inlet 5 and making it difficult for the raw material to flow, thus affecting the working efficiency of the rotary kiln. The lower end of the moving rod 65 is fixedly connected to a movable block 67, and the right side of the movable block 67 is rotatably connected to a connecting rod 68. The inner wall of the front side of the feed box 4 is fixedly connected to a connecting block 69, and the inner side of the connecting block 69 is hinged to a swing arm. The plate 610, by setting the swing plate 610, when the movable block 67 moves upward, drives the connecting rod 68 to rotate upward, causing the swing plate 610 to swing back and forth, and disperses the high temperature gas, forming turbulence, so that the high temperature gas can be evenly diffused inside the feeding box 4, and the raw materials are quickly dried. This avoids the cement raw materials from becoming wet and sticky after contacting the humid air in humid weather, which would cause the raw materials to stick together and form lumps, thus affecting the mixing and processing of the raw materials and affecting the quality of the cement product. The front end of the connecting rod 68 is hinged to the outer wall of the swing plate 610.

[0023] The aforementioned baffle mechanism 7 includes: a hinge block 71, a rotating rod 72, and a baffle plate 73. The lower end of the unblocking rod 66 is fixedly connected to the hinge block 71, and the rotating rod 72 is slidably connected to the inner wall of the hinge block 71. The front end of the rotating rod 72 is hinged to the baffle plate 73. By setting the baffle plate 73, when the hinge block 71 moves upward, it pulls the rotating rod 72 to move inward, causing the baffle plate 73 to move, so that the baffle plate 73 blocks the feed inlet 5, preventing the air speed inside the feed box 4 from being too fast, which could easily blow smaller raw materials out of the feed box 4, causing the raw material particles to pollute the air at the work site, thereby affecting the health of the on-site workers. The baffle plate 73 penetrates the inner wall of the feed inlet 5, and the penetration point is slidably connected.

[0024] Working principle: When the burner 3 heats the inner wall of the rotary kiln body 2, the high-temperature exhaust gas generated by combustion flows into the feed box 4 through the exhaust pipe 61. This high-temperature exhaust gas causes the impeller 62 to rotate, driving the protrusion 63 to rotate multiple times and compressing the hollow block 64. The hollow block 64 then pushes the moving rod 65 upwards, causing the moving rod 65 to move the unblocking rod 66, which then guides the feed inlet 5. This prevents the raw material from easily sticking together and forming clumps after it becomes damp. If the clumps are too large, they can easily get stuck on the inner wall of the feed inlet 5, blocking it and preventing the raw material from being properly fed. Difficulty in airflow affects the working efficiency of the rotary kiln. At the same time, the hollow block 64 drives the movable block 67 to move upward, pulling the connecting rod 68 to rotate upward, causing the swing plate 610 to swing back and forth. This allows the swing plate 610 to disperse the high-temperature gas and form turbulence, so that the high-temperature gas can be evenly diffused inside the feeding box 4, quickly drying the raw materials. This prevents the cement raw materials from becoming damp and sticky after contact with humid air in humid weather, which would cause the raw materials to stick together and form lumps, thus affecting the mixing and processing of the raw materials and the quality of the finished cement product.

[0025] When the unblocking rod 66 moves downward, it pushes the hinge block 71 downward, causing the hinge block 71 to press against the rotating rod 72, pushing the rotating rod 72 to move to both sides. This moves the baffle plate 73, preventing it from blocking the feed inlet 5. This allows the raw material to be fed multiple times, avoiding excessive material input at once, which would cause the material to pile up and make it difficult for the high-temperature gas to dry the material at the bottom. This would cause the damp material to stick to the bottom of the feeding box 4, resulting in unnecessary waste. When the unblocking rod 66 moves upward, it moves the hinge block 71 upward and pulls the rotating rod 72 inward, moving the baffle plate 73. This moves the baffle plate 73 to block the feed inlet 5, preventing the air velocity inside the feeding box 4 from being too high. This would prevent smaller pieces of material from being blown out of the feeding box 4, causing the raw material particles to pollute the air at the work site and thus affecting the health of the workers.

[0026] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A cement rotary kiln with waste heat recovery function, comprising a base (1), characterized in that: The upper end of the base (1) is fixedly connected to the rotary kiln body (2), the left end of the rotary kiln body (2) is fixedly connected to the burner (3), the right end of the rotary kiln body (2) is slidably connected to the feeding box (4), the upper end of the feeding box (4) is fixedly connected to the inlet (5), the inside of the feeding box (4) is provided with a waste heat recovery mechanism (6) for drying auxiliary raw materials, the inside of the inlet (5) is provided with a baffle mechanism (7) to prevent raw materials from overflowing, and the waste heat recovery mechanism (6) includes: The exhaust pipe (61) is fixedly connected to the rotary kiln body (2) at its left end. The left end of the exhaust pipe (61) passes through the left side of the feed box (4) and is fixedly connected at the point of penetration. Impeller (62), which is rotatably connected to the inner wall of the feeding box (4), and a protrusion (63) is fixedly connected to the right side of the impeller (62).

2. A cement rotary kiln with waste heat recovery function according to claim 1, characterized in that: A hollow block (64) is slidably connected to the right side of the impeller (62). The inner wall of the hollow block (64) is on the outer wall of the protrusion (63). A moving rod (65) is fixedly connected to the upper end of the hollow block (64). A dredging rod (66) is fixedly connected to the right side of the upper end of the moving rod (65).

3. A cement rotary kiln with waste heat recovery function according to claim 2, characterized in that: The lower end of the moving rod (65) is fixedly connected to a movable block (67), and the right side of the movable block (67) is rotatably connected to a connecting rod (68). The inner wall of the front side of the feeding box (4) is fixedly connected to a connecting block (69), and the inner side of the connecting block (69) is hinged to a swing plate (610). The front end of the connecting rod (68) is hinged to the outer wall of the swing plate (610).

4. A cement rotary kiln with waste heat recovery function according to claim 2, characterized in that: The lower end of the unblocking rod (66) is fixedly connected to a hinge block (71), and the inner wall of the hinge block (71) is slidably connected to a rotating rod (72). The front end of the rotating rod (72) is hinged to a baffle plate (73), and the baffle plate (73) penetrates the inner wall of the feed inlet (5) and is slidably connected at the penetration point.

5. A cement rotary kiln with waste heat recovery function according to claim 4, characterized in that: The shield (73) is provided in two sets, and is symmetrically arranged with the center line of the vertical direction of the feed inlet (5) as the axis of symmetry.

6. A cement rotary kiln with waste heat recovery function according to claim 2, characterized in that: The unblocking rod (66) is L-shaped.

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