Cement kiln pulverized alternative fuel delivery device

Abstract

The utility model discloses a cement kiln powdery alternative fuel conveying device relates to cement production technical field, including bunker and pipeline, the lower surface fixed connection of bunker has buffer storehouse, and buffer storehouse is fixedly connected with the pipeline, and the surface fixed connection of pipeline has the connecting block, and through starting servo motor its output shaft will drive fixed agitator rod to rotate, and the whole use alternative fuel can reduce cement kiln production line to the consumption of traditional fuel, can handle various powdery alternative fuel, realized the resource utilization of the calorific value waste, solved solid waste disposal problem, promoted the recycling of resources, and the rotation of agitator rod will drive fixed screw rod to rotate together, and the rotation of agitator rod can scatter the accumulated material, and the screw discharge structure can adjust the rotating speed of screw, and the discharge capacity of powdery alternative fuel is accurately controlled, and it is ensured that the alternative fuel amount meeting production process standard enters the rotary kiln.

Description

Technical Field

[0001] This utility model relates to the field of cement production technology, and in particular to a cement kiln powdered alternative fuel conveying device. Background Technology

[0002] The cement kiln powdered alternative fuel conveying system, a key piece of equipment for energy conservation, emission reduction, and comprehensive resource utilization in cement production, plays a vital role in the sustainable development of the cement industry. This system conveys calorific value waste as powdered alternative fuel to the cement kiln, not only realizing the resource utilization of solid waste but also effectively reducing fossil fuel consumption in the cement production process, decreasing greenhouse gas emissions such as carbon dioxide, and contributing to the energy-saving and carbon-reducing transformation and upgrading of the cement industry. Its main components are as follows:

[0003] 1. Storage bin: Used to store powdered alternative fuels. Steel silos are usually installed on the east side of the coal mill at the coal powder discharge bin location to provide a stable source of materials for transportation.

[0004] 2. Conveying and Metering System: The conveying and metering system added to the lower part of the new silo is responsible for stably conveying the powdered alternative fuel to the interface between the rotary kiln decomposition furnace and the tertiary air duct, and realizing the metering and control of the material.

[0005] 3. Connecting Pipelines: Connect various devices to ensure smooth transport of powdered alternative fuels within the system.

[0006] Currently, various methods have been adopted in the industry to achieve effective transportation of powdered alternative fuels in cement kilns. Some companies use relatively simple conveying pipelines to directly feed the alternative fuels into the cement kiln, but this method makes it difficult to accurately control the conveying volume and stability. Other companies have added basic metering equipment to the conveying devices, but these have poor adaptability to alternative fuels with different characteristics. Some large companies have invested heavily in building complex automated conveying systems, which have improved conveying efficiency to some extent, but the equipment costs are high and maintenance is difficult.

[0007] However, the above-described implementation still has the following problems. Regarding the accuracy of material conveying, the simple conveying method cannot precisely control the amount of alternative fuel conveyed according to different production conditions of the cement kiln, leading to unstable calcination conditions and affecting clinker quality. In terms of adapting to the characteristics of alternative fuels, existing conveying devices are unable to flexibly cope with the differences in particle size, density, and moisture content of various powdered alternative fuels on the market, limiting the widespread application of alternative fuels. This application proposes a solution to this problem: a cement kiln powdered alternative fuel conveying device with precise material conveying control and good adaptability to alternative fuels. This device precisely controls the material conveying amount through adjustable pipe openings, adapts to the characteristics of various alternative fuels, effectively prevents blockages, and provides a stable and efficient fuel conveying guarantee for cement production. Utility Model Content

[0008] To address the shortcomings of existing technologies, this utility model provides a cement kiln powdered alternative fuel conveying device. This solves the problem that simple conveying methods cannot accurately control the amount of alternative fuel conveyed according to different production conditions of the cement kiln, resulting in unstable calcination conditions of the cement kiln and affecting clinker quality. In terms of adapting to the characteristics of alternative fuels, existing conveying devices are unable to flexibly cope with the differences in particle size, density, moisture content, etc. of various powdered alternative fuels on the market, thus limiting the widespread application of alternative fuels.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A cement kiln powdered alternative fuel conveying device includes a silo and a pipeline. A buffer chamber is fixedly connected to the lower surface of the silo, and the buffer chamber is fixedly connected to the pipeline. A connecting block is fixedly connected to the surface of the pipeline, and a baffle is movably engaged within the connecting block. An agitator is installed inside the silo, and a screw rod is installed inside the buffer chamber. The agitator is fixedly connected to the screw rod. A fixed frame is fixedly connected inside the silo, and a servo motor is fixedly installed on the upper surface of the fixed frame.

[0011] Preferably, the servo motor output shaft is fixedly connected to the stirring rod, and a slot is provided on the annular side of the pipe, which is movably engaged with the baffle.

[0012] Preferably, the front surface of the connecting block is provided with an arc-shaped groove, the arc-shaped groove is movably engaged with the baffle, and a screw is threaded into the connecting block, the screw being rotatably connected to the baffle.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The overall use of alternative fuels can reduce the consumption of traditional fuels in cement kiln production lines, reduce the use of fossil fuels, and reduce emissions of greenhouse gases such as carbon dioxide. It can process a variety of powdered alternative fuels, realize the resource utilization of waste with calorific value, solve the problem of solid waste disposal, and promote the recycling of resources. The screw discharge structure can precisely control the discharge amount of powdered alternative fuel by adjusting the speed of the screw, ensuring that the amount of alternative fuel entering the rotary kiln meets the production process standards, which helps to stabilize the calcination conditions of the cement kiln and ensure the stability of clinker quality.

[0015] 2. The baffle fits tightly against the inner wall of the pipe. As it moves, it will adjust the size of the pipe opening. By adjusting the size of the pipe opening, the amount of powdered alternative fuel required at different production stages can be precisely matched, avoiding too much or too little fuel, ensuring the stable operation of the cement kiln and improving the quality of clinker. Attached Figure Description

[0016] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0017] Figure 1 This is an overall structural diagram of the present invention;

[0018] Figure 2 This is an overall front view of the present invention;

[0019] Figure 3 This is a structural diagram of the connecting block of this utility model;

[0020] Figure 4 This is a structural diagram of the helical rod of this utility model.

[0021] Legend: 1. Hopper; 2. Buffer hopper; 3. Pipe; 4. Connecting block; 5. Agitator rod; 6. Fixing frame; 7. Servo motor; 8. Slot; 10. Screw; 11. Arc groove; 12. Baffle; 13. Helical rod. Detailed Implementation

[0022] This application provides a cement kiln powdered alternative fuel conveying device, which effectively solves the problem that simple conveying methods cannot accurately control the amount of alternative fuel conveyed according to different production conditions of the cement kiln, resulting in unstable calcination conditions of the cement kiln and affecting clinker quality. In terms of adapting to the characteristics of alternative fuels, existing conveying devices are difficult to flexibly cope with the differences in particle size, density, moisture and other aspects of various powdered alternative fuels on the market, which limits the widespread application of alternative fuels. This application designs a cement kiln powdered alternative fuel conveying device with precise material conveying control and good adaptability to alternative fuels. The device can accurately control the material conveying amount through adjustable pipe openings, adapt to the characteristics of various alternative fuels, effectively prevent blockages, and provide a stable and efficient fuel conveying guarantee for cement production. Example

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the technical solution in this application embodiment effectively solves the problem that simple conveying methods cannot accurately control the conveying amount of alternative fuel according to different production conditions of cement kilns, resulting in unstable calcination conditions of cement kilns and affecting clinker quality. In terms of adapting to the characteristics of alternative fuels, existing conveying devices are difficult to flexibly cope with the differences in particle size, density, moisture content, etc. of various types of powdered alternative fuels on the market, which limits the widespread application of alternative fuels. The overall idea is as follows:

[0024] To address the problems existing in the prior art, this utility model provides a cement kiln powdered alternative fuel conveying device, including a silo 1 and a pipe 3. A buffer chamber 2 is fixedly connected to the lower surface of the silo 1, and the buffer chamber 2 is fixedly connected to the pipe 3. A connecting block 4 is fixedly connected to the surface of the pipe 3, and a baffle 12 is movably engaged inside the connecting block 4. An agitator 5 is installed inside the silo 1, and a screw rod 13 is installed inside the buffer chamber 2. The agitator 5 and the screw rod 13 are fixedly connected. A fixing frame 6 is fixedly connected inside the silo 1, and a servo motor 7 is fixedly installed on the upper surface of the fixing frame 6. The powdered alternative fuel is stored in a steel silo located at the coal powder discharge bin on the east side of the coal mill. During conveying, the outlet of the silo 1... The internal pneumatic gate controls the material flow, and the buffer bin 2 buffers the material pressure. After being metered by the discharge chute below the hopper 1, the material enters the airlock feeder to prevent hot air backflow. Under the pneumatic force supplied by the external Roots blower, the material is transported through the pipeline 3 to the interface between the rotary kiln decomposition furnace and the tertiary air duct for combustion, completing the entire conveying and combustion process. The use of alternative fuels can reduce the consumption of traditional fuels in cement kiln production lines, reduce the use of fossil fuels, and reduce emissions of greenhouse gases such as carbon dioxide. It can handle a variety of powdered alternative fuels, realize the resource utilization of waste with calorific value, solve the problem of solid waste disposal, and promote the recycling of resources.

[0025] The output shaft of the servo motor 7 is fixedly connected to the stirring rod 5. A slot 8 is provided on the annular side of the pipe 3, which is movably engaged with the baffle 12. An arc-shaped groove 11 is provided on the front surface of the connecting block 4, which is movably engaged with the baffle 12. A screw 10 is threaded into the connecting block 4, and the screw 10 is rotatably connected to the baffle 12. During the conveying process, starting the servo motor 7 will drive the fixed stirring rod 5 to rotate. The rotation of the stirring rod 5 will drive the fixed spiral rod 13 to rotate as well. The rotation of the stirring rod 5 will break up the accumulated material. The spiral discharge structure can precisely control the powder content by adjusting the speed of the spiral. The output of alternative fuel ensures that the amount of alternative fuel entering the rotary kiln meets the production process standards, which helps stabilize the calcination conditions of the cement kiln and ensure the stability of clinker quality. By rotating the screw 10, it moves within the connecting block 4. During the movement, the screw 10 will drive the rotating connected baffle 12 to move together. The baffle 12 is tightly attached to the inner wall of the pipe 3. As the movement proceeds, the opening size of the pipe 3 will be adjusted. By adjusting the opening size of the pipe 3, the amount of powdered alternative fuel required at different production stages can be accurately matched, avoiding too much or too little fuel, ensuring the stable operation of the cement kiln and improving the quality of clinker.

[0026] Among them, the silo 1 is used to store powdered alternative fuel, providing a stable material source for conveying. Its lower surface is connected to the buffer silo 2 to ensure that the material can smoothly enter the subsequent conveying process.

[0027] The buffer bin 2 connects the silo 1 and the pipeline 3, and plays the role of buffering the material pressure to prevent the material from impacting the pipeline 3 due to excessive pressure, thus ensuring the stability of the conveying process.

[0028] Pipeline 3 is responsible for transporting powdered alternative fuel to the interface between the rotary kiln decomposition furnace and the tertiary air duct. It is a key channel for material transfer and is connected to buffer bin 2 and connecting block 4.

[0029] The connecting block 4 is installed on the surface of the pipe 3 to connect and fix the baffle 12. The position of the baffle 12 is adjusted by the screw 10, thereby controlling the size of the opening of the pipe 3.

[0030] The stirring rod 5 is installed in the hopper 1 and is fixedly connected to the screw rod 13. It rotates under the drive of the servo motor 7, which can break up the accumulated material and assist the screw rod 13 in discharging the material.

[0031] The fixing frame 6 is fixed inside the hopper 1 to support and fix the servo motor 7, ensuring the stable operation of the servo motor 7 and providing a power base for the rotation of the stirring rod 5.

[0032] The servo motor 7 is mounted on the fixed frame 6, and its output shaft is fixed to the stirring rod 5. After starting, it drives the stirring rod 5 and the screw rod 13 to rotate, thereby realizing material dispersion and precise discharge control.

[0033] The slot 8 is opened on the annular side of the pipe 3 and is movably engaged with the baffle 12. Together with the arc groove 11, the baffle 12 can move stably on the pipe 3 to adjust the size of the opening.

[0034] The screw 10 is threaded into the connecting block 4 and rotatably connected to the baffle 12. Rotating the screw 10 can drive the baffle 12 to move, precisely adjusting the size of the pipe 3 opening.

[0035] The arc-shaped groove 11 is formed on the front surface of the connecting block 4 and is movably engaged with the baffle 12. Together with the slot 8, it guides the movement of the baffle 12 to ensure the accuracy of adjusting the opening size of the pipe 3.

[0036] The baffle 12 is movably engaged in the connecting block 4, tightly fitting the inner wall of the pipe 3, and moves under the drive of the screw 10 to adjust the opening size of the pipe 3 and control the material conveying volume;

[0037] The screw rod 13 is installed inside the buffer chamber 2 and is fixedly connected to the stirring rod 5. When rotating, it can accurately control the output of powdered alternative fuel and ensure conveying accuracy.

[0038] Working principle:

[0039] The powdered alternative fuel is stored in a steel silo located at the coal powder discharge bin on the east side of the coal mill. During conveying, a pneumatic gate installed at the outlet of silo 1 controls the material flow, and buffer silo 2 buffers the material pressure. After being metered by the discharge chute installed below silo 1, the material enters the airlock feeder to prevent hot air backflow. Under the pneumatic force supplied by an external Roots blower, it is conveyed through pipeline 3 to the interface between the rotary kiln decomposition furnace and the tertiary air duct for combustion, completing the entire conveying and combustion process. The overall use of alternative fuel can reduce the consumption of traditional fuels in cement kiln production lines, reduce the use of fossil fuels, and reduce emissions of greenhouse gases such as carbon dioxide. It can handle various powdered alternative fuels, realize the resource utilization of waste with calorific value, solve the problem of solid waste disposal, and promote the recycling of resources. During the conveying process, the output shaft of the servo motor 7 will drive a fixed agitator. Rotating rod 5 causes the fixed screw rod 13 to rotate as well. The rotation of the stirring rod 5 breaks up the accumulated material. The screw discharge structure can precisely control the discharge amount of powdered alternative fuel by adjusting the speed of the screw, ensuring that the amount of alternative fuel entering the rotary kiln meets the production process standards. This helps to stabilize the calcination conditions of the cement kiln and ensure the stability of clinker quality. Rotating screw 10 causes it to move within connecting block 4. During the movement of screw 10, it drives the rotating baffle 12 to move together. Baffle 12 fits tightly against the inner wall of pipe 3. As it moves, it adjusts the opening size of pipe 3. By adjusting the opening size of pipe 3, the amount of powdered alternative fuel required at different production stages can be precisely matched, avoiding too much or too little fuel, ensuring the stable operation of the cement kiln and improving clinker quality.

[0040] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A cement kiln pulverized alternative fuel conveying device comprising a bunker (1) and a pipe (3), characterized in that, A buffer chamber (2) is fixedly connected to the lower surface of the silo (1), the buffer chamber (2) is fixedly connected to the pipe (3), and a connecting block (4) is fixedly connected to the surface of the pipe (3). The connecting block (4) is movably connected to a baffle (12), the hopper (1) is provided with a stirring rod (5), the buffer hopper (2) is provided with a spiral rod (13), and the stirring rod (5) and the spiral rod (13) are fixedly connected.

2. A cement kiln pulverized alternative fuel delivery apparatus as defined in claim 1 wherein: The hopper (1) is fixedly connected to a frame (6); A servo motor (7) is fixedly installed on the upper surface of the fixing frame (6).

3. A cement kiln powdered substitute fuel delivery apparatus as defined in claim 2, wherein: The output shaft of the servo motor (7) is fixedly connected to the stirring rod (5).

4. A cement kiln pulverized substitute fuel delivery apparatus as defined in claim 1 wherein: The pipe (3) has a groove (8) on its annular side; The slot (8) is movably engaged with the baffle (12).

5. A cement kiln pulverized substitute fuel delivery apparatus as defined in claim 1 wherein: The front surface of the connecting block (4) is provided with an arc-shaped groove (11); The arc-shaped groove (11) is movably engaged with the baffle (12).

6. A cement kiln pulverized substitute fuel delivery apparatus as defined in claim 1 wherein: The connecting block (4) is threaded with a screw (10). The screw (10) is rotatably connected to the baffle (12).

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