Energy-saving rotary kiln with preheating device

Abstract

The energy-saving rotary kiln with the preheating device comprises a rotary kiln body and a base, the rotary kiln body is installed on the base, a preheating box is installed on the portion, located on one side of the rotary kiln body, of the surface of the top of the base through a supporting column, a preheating frame is installed in the preheating box, a bearing plate is arranged in the preheating frame, and the bearing plate is connected with the preheating box. The preheating frame and the bearing plate are of hollow structures, and a water inlet pipe and a water outlet pipe are arranged on the surface of the preheating box in a penetrating mode. Through cooperative use of the driving motor, the main shaft, the cleaning plate and the brush, dust adsorbed to the bottom end of the preheating box can be conveniently cleaned, and during operation, the driving motor is started and then drives the cleaning plate to rotate through the main shaft, so that the bottom end of the preheating box is cleaned through the brush while the cleaning plate rotates; and in this way, operation is easy, and the heat conduction efficiency of the preheating box can be conveniently guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of rotary kiln technology, and in particular to an energy-saving rotary kiln with a preheating device. Background Technology

[0002] A rotary kiln (also known as a rotary calcining kiln) is a type of building materials equipment. Rotary kilns can be categorized into cement kilns, metallurgical and chemical kilns, and lime kilns based on the materials they process. Cement kilns are primarily used for calcining cement clinker and are divided into two main categories: dry-process cement kilns and wet-process cement kilns. Metallurgical and chemical kilns are mainly used in the metallurgical industry for magnetizing and roasting lean iron ore in steel plants, oxidizing and roasting chromium and nickel iron ore, roasting high-alumina vanadium ore in refractory material plants, roasting clinker and aluminum hydroxide in aluminum plants, and roasting chromite sand and chromite powder in chemical plants. Lime kilns (i.e., active lime kilns) are used for roasting active lime and lightly calcined dolomite for steel plants and ferroalloy plants.

[0003] However, the existing rotary kiln is inconvenient for preheating materials, which greatly increases the working time in the later stages and the energy consumption of the rotary kiln, causing great inconvenience to users.

[0004] Therefore, it is necessary to provide an energy-saving rotary kiln with a preheating device to solve the above-mentioned technical problems. Utility Model Content

[0005] This invention provides an energy-saving rotary kiln with a preheating device, which solves the problems in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides an energy-saving rotary kiln with a preheating device, including a rotary kiln body and a base. The rotary kiln body is installed on the base. A preheating box is installed on the top surface of the base on one side of the rotary kiln body via a support column. A preheating frame is installed inside the preheating box. A support plate is set inside the preheating frame. The preheating frame and the support plate are hollow structures. A water inlet pipe and a water outlet pipe are respectively provided through the surface of the preheating box. A chimney is provided at one end of the rotary kiln body. The other end of the chimney is connected through the bottom end of the preheating box.

[0007] Preferably, a drive motor is installed on the bottom surface of the preheating box, and a main shaft is provided through the output end of the drive motor through the surface of the preheating box. A cleaning plate is installed on the top of the main shaft, and a brush is provided on the top surface of the cleaning plate. A drain cover is provided below the surface of the preheating box.

[0008] Preferably, a smoke exhaust pipe is provided above the surface of the preheating box, and a drainage groove is provided on the outer surface of the preheating frame. Multiple drainage grooves are provided and are equidistantly located on the outer surface of the preheating frame.

[0009] Preferably, multiple support plates are provided, and the multiple support plates are installed at equal intervals inside the preheating frame.

[0010] Preferably, a filter cartridge is installed at the contact point between the chimney and the preheating box.

[0011] Preferably, a sealing door is movably installed on the outer surface of the preheating box.

[0012] Preferably, a controller is installed on the outer surface of the rotary kiln body.

[0013] Compared with related technologies, the energy-saving rotary kiln with a preheating device provided by this utility model has the following beneficial effects:

[0014] 1. Compared with existing technologies, this energy-saving rotary kiln with a preheating device, through the combined use of a preheating box and a preheating frame, facilitates the preheating of materials by the flue gas generated by the rotary kiln itself. During operation, liquid is first injected into the preheating frame through the water inlet pipe, then the material to be preheated is placed on the support plate. The flue gas generated by the rotary kiln then enters the preheating box through the exhaust pipe, heating the liquid inside the preheating frame, which in turn preheats the material on the support plate. This method of heating the liquid with flue gas improves the uniformity of material preheating. The combined use of a drive motor, main shaft, cleaning plate, and brush facilitates the cleaning of dust adsorbed at the bottom of the preheating box. During operation, the drive motor is started, and the drive motor drives the cleaning plate to rotate via the main shaft. Simultaneously, the brush cleans the bottom of the preheating box, removing the adsorbed dust, which is then discharged through the drain port. This method is simple to operate and ensures the heat conduction efficiency of the preheating box. Attached Figure Description

[0015] Figure 1 A schematic diagram of the structure of an energy-saving rotary kiln with a preheating device provided by this utility model;

[0016] Figure 2 A schematic diagram of the preheating box structure of an energy-saving rotary kiln with a preheating device provided for this utility model;

[0017] Figure 3 A schematic diagram of the diversion trough structure of an energy-saving rotary kiln with a preheating device provided by this utility model;

[0018] Figure 4 A schematic diagram of the brush structure of an energy-saving rotary kiln with a preheating device provided by this utility model.

[0019] Numbering on the map:

[0020] 1. Base; 2. Rotary kiln body; 3. Controller; 4. Chimney; 5. Exhaust pipe; 6. Preheating box; 7. Sealing door; 8. Drive motor; 9. Cleaning plate; 10. Preheating frame; 11. Support plate; 12. Filter cartridge; 13. Drain cover; 14. Drain pipe; 15. Water inlet pipe; 16. Drainage channel; 17. Brush. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] First Embodiment

[0023] Please refer to the following: Figure 1-4 An energy-saving rotary kiln with a preheating device includes a rotary kiln body 2 and a base 1. The rotary kiln body 2 is mounted on the base 1. A preheating box 6 is mounted on the top surface of the base 1 on one side of the rotary kiln body 2 via a support column. A preheating frame 10 is installed inside the preheating box 6. A support plate 11 is provided inside the preheating frame 10. The preheating frame 10 and the support plate 11 are hollow structures. A water inlet pipe 15 and a drain pipe 14 are respectively provided through the surface of the preheating box 6. A chimney 4 is provided at one end of the rotary kiln body 2, and the other end of the chimney 4 is connected through to the bottom end of the preheating box 6.

[0024] By using the preheating box 6 and the preheating frame 10 together, the flue gas generated by the rotary kiln body 2 can be used to preheat the material. During operation, liquid is first injected into the preheating frame 10 through the water inlet pipe 15. Then, the material to be preheated is placed on the support plate 11. The flue gas generated by the rotary kiln body 2 enters the preheating box 6 through the exhaust pipe 5 and heats the liquid inside the preheating frame 10. The preheating frame 10 then preheats the material on the support plate 11. This method of heating the liquid with flue gas can improve the uniformity of material preheating.

[0025] The working principle of the energy-saving rotary kiln with a preheating device provided by this utility model is as follows:

[0026] This energy-saving rotary kiln with a preheating device operates by first injecting liquid into the preheating frame 10 through the water inlet pipe 15, then placing the material to be preheated onto the support plate 11. The flue gas generated by the rotary kiln body 2 then enters the preheating chamber 6 through the exhaust pipe 5, heating the liquid inside the preheating frame 10. This allows the preheating frame 10 to preheat the material on the support plate 11. This method of heating the liquid with flue gas improves the uniformity of material preheating. The coordinated use of the drive motor 8, main shaft, cleaning plate 9, and brush 17 facilitates the cleaning of dust adsorbed at the bottom of the preheating chamber 6. During operation, the drive motor 8 is started, and it drives the cleaning plate 9 to rotate via the main shaft. Simultaneously, the brush 17 cleans the bottom of the preheating chamber 6, removing the adsorbed dust. The dust is then discharged through the drain port. This method is simple to operate and ensures the heat conduction efficiency of the preheating chamber 6.

[0027] Compared with related technologies, the energy-saving rotary kiln with a preheating device provided by this utility model has the following beneficial effects:

[0028] This energy-saving rotary kiln with a preheating device, through the coordinated use of a preheating box 6 and a preheating frame 10, facilitates the preheating of materials by the flue gas generated by the rotary kiln body 2. During operation, liquid is first injected into the preheating frame 10 through the water inlet pipe 15. Then, the material to be preheated is placed on the support plate 11. The flue gas generated by the rotary kiln body 2 then enters the preheating box 6 through the exhaust pipe 5, heating the liquid inside the preheating frame 10. This allows the preheating frame 10 to preheat the material on the support plate 11. This method utilizes flue gas to preheat the material. The liquid heating method facilitates the improvement of material preheating uniformity. By setting up the drive motor 8, main shaft, cleaning plate 9, and brush 17 in cooperation, it is easy to clean the dust adsorbed at the bottom of the preheating box 6. During operation, the drive motor 8 is started, and then the drive motor 8 drives the cleaning plate 9 to rotate through the main shaft. At the same time, the cleaning plate 9 rotates and the brush 17 cleans the bottom of the preheating box 6, thereby cleaning the dust adsorbed at the bottom. Then, it can be discharged through the drain port. This method is simple to operate and makes it easy to ensure the heat conduction efficiency of the preheating box 6.

[0029] Second Embodiment

[0030] Please refer to the following: Figure 1-4 Based on the energy-saving rotary kiln with a preheating device provided in the first embodiment of this application, the second embodiment of this application proposes another energy-saving rotary kiln with a preheating device. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0031] Specifically, the second embodiment of this application provides an energy-saving rotary kiln with a preheating device, which differs in that a drive motor 8 is installed on the bottom surface of the preheating box 6, and a main shaft is provided through the output end of the drive motor 8 through the surface of the preheating box 6. A cleaning plate 9 is installed on the top of the main shaft, and a brush 17 is provided on the top surface of the cleaning plate 9. A drain cover 13 is provided below the surface of the preheating box 6. By using the drive motor 8, the main shaft, the cleaning plate 9, and the brush 17 in coordination, it is convenient to clean the dust adsorbed at the bottom of the preheating box 6. During operation, the drive motor 8 is started, and then the drive motor 8 drives the cleaning plate 9 to rotate through the main shaft. At the same time as the cleaning plate 9 rotates, the brush 17 cleans the bottom of the preheating box 6, thereby cleaning the dust adsorbed at the bottom. Then, the dust can be discharged through the drain port. This method is simple to operate and makes it easy to ensure the heat conduction efficiency of the preheating box 6.

[0032] In this technical solution, a flue pipe 5 is provided through the surface of the preheating box 6, and a flow channel 16 is provided on the outer surface of the preheating frame 10. Multiple flow channels 16 are provided and are equidistantly located on the outer surface of the preheating frame 10. By providing the flow channels 16, it is convenient to guide the flue gas, so that the flue gas can heat the liquid inside the preheating box 6 through the outer wall of the preheating box 6, and it is also convenient to discharge the flue gas.

[0033] In this technical solution, multiple support plates 11 are provided, and the multiple support plates 11 are installed at equal distances inside the preheating frame 10. By providing multiple support plates 11, it is easy to increase the amount of preheating in one go.

[0034] In this technical solution, a filter cylinder 12 is installed at the contact point between the chimney 4 and the preheating box 6. By setting the filter cylinder 12, it is convenient to filter impurities in the flue gas entering the preheating box 6.

[0035] With this technical solution, a sealing door 7 is movably installed on the outer surface of the preheating box 6, which facilitates the sealing of the preheating box 6.

[0036] In this technical solution, a controller 3 is installed on the outer surface of the rotary kiln body 2. By setting the controller 3, it is convenient to control the electrical components inside the rotary kiln body 2. The control circuit of the controller 3 can be implemented by simple programming by those skilled in the art. It is common knowledge in the art. It is only used and not modified. Therefore, the control method and circuit connection will not be described in detail.

[0037] It should be noted that all components used in this application are standard parts that can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets and welding that are mature in the prior art. The mechanical parts and electrical equipment adopt conventional models in the prior art. The circuit connection adopts conventional connection methods in the prior art. The electrical equipment is connected to an external safe power source. These will not be described in detail here.

[0038] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An energy-saving rotary kiln with a preheating device, comprising a rotary kiln body (2) and a base (1), characterized in that, The rotary kiln body (2) is mounted on the base (1). The top surface of the base (1) is located on one side of the rotary kiln body (2) and a preheating box (6) is installed on it via a support column. A preheating frame (10) is installed inside the preheating box (6). A bearing plate (11) is provided inside the preheating frame (10). The preheating frame (10) and the bearing plate (11) are hollow structures. A water inlet pipe (15) and a drain pipe (14) are respectively provided through the surface of the preheating box (6). A chimney (4) is provided at one end of the rotary kiln body (2). The other end of the chimney (4) is connected through the bottom end of the preheating box (6).

2. The energy-saving rotary kiln with a preheating device according to claim 1, characterized in that, A drive motor (8) is installed on the bottom surface of the preheating box (6). The output end of the drive motor (8) passes through the surface of the preheating box (6) and is provided with a main shaft. A cleaning plate (9) is installed on the top of the main shaft. A brush (17) is provided on the top surface of the cleaning plate (9). A drain cover (13) is provided below the surface of the preheating box (6).

3. An energy-saving rotary kiln with a preheating device according to claim 1, characterized in that, A smoke exhaust pipe (5) is provided above the surface of the preheating box (6), and a flow channel (16) is provided on the outer surface of the preheating frame (10). Multiple flow channels (16) are provided, and multiple flow channels (16) are equally spaced on the outer surface of the preheating frame (10).

4. An energy-saving rotary kiln with a preheating device according to claim 1, characterized in that, Multiple support plates (11) are provided, and multiple support plates (11) are installed at equal intervals inside the preheating frame (10).

5. An energy-saving rotary kiln with a preheating device according to claim 1, characterized in that, A filter cartridge (12) is installed at the contact point between the chimney (4) and the preheating box (6).

6. An energy-saving rotary kiln with a preheating device according to claim 1, characterized in that, A sealing door (7) is movably installed on the outer surface of the preheating box (6).

7. The energy efficient rotary kiln with preheating device as claimed in claim 1 wherein, A controller (3) is installed on the outer surface of the rotary kiln body (2).

Images