Feeding device for alternative fuel

Abstract

The utility model relates to the technical field of cement clinker production, and discloses an alternative fuel feeding device which comprises a shell, the shell comprises a feeding port, a cylindrical containing cavity and a discharging port which are sequentially connected from top to bottom, and the feeding port and the discharging port are distributed in a staggered mode. The rotating shaft movably penetrates through the center of the cylindrical accommodating cavity and is rotationally connected with the cylindrical accommodating cavity; the multiple sets of rotating partition plates are circumferentially arranged on the side wall of the rotating shaft, and the cylindrical containing cavity is divided into a plurality of cavities by the rotating partition plates; the weighing assembly is arranged at the inner bottom of the cylindrical accommodating cavity, is opposite to the feeding hole and is used for weighing the materials; the driving assembly is connected with the end part of the rotating shaft and is used for driving the rotating shaft to rotate so as to convey the materials from the weighing assembly to the discharging opening; according to the alternative fuel feeding device, stable operation of an alternative fuel system can be guaranteed, so that uniform and stable discharging is guaranteed, and energy conservation and consumption reduction are achieved.

Description

Technical Field

[0001] This utility model relates to the field of cement clinker production technology, and more specifically to a feeding device for alternative fuels. Background Technology

[0002] Currently, cement clinker production consumes a large amount of fossil fuels and emits significant amounts of carbon dioxide. To address the pressure of energy conservation and carbon reduction, using solid waste such as biomass pellets, RDF (recycled fuel), and waste textiles as alternative fuels to reduce energy consumption and carbon emissions in clinker production lines is a practical and effective solution.

[0003] However, in practical applications, these alternative fuels (especially waste textiles) often cause material blockage problems due to their low density, large size, and irregular shape. Traditional feeding devices are difficult to adapt to, easily causing jamming, large fluctuations in feed rate, and large air leakage in the system, which seriously affects the stable operation of the alternative fuel system, thus failing to guarantee the stability of the output and increasing the energy consumption of the cement kiln system. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a feeding device for alternative fuels. This feeding device can ensure the stable operation of the alternative fuel system, thereby ensuring uniform and stable output, and saving energy and reducing consumption.

[0005] To achieve the above objectives, this utility model provides a feeding device for alternative fuels, comprising:

[0006] The housing includes an inlet, a cylindrical receiving cavity, and an outlet connected sequentially from top to bottom, with the inlet and outlet being staggered.

[0007] A rotating shaft extends movably through the center of the cylindrical receiving cavity and is rotatably connected to the cylindrical receiving cavity; multiple sets of rotating partitions are circumferentially arranged on the side wall of the rotating shaft, and the rotating partitions divide the cylindrical receiving cavity into multiple chambers;

[0008] A weighing assembly is located at the bottom of the cylindrical receiving cavity and directly opposite the feed inlet, for weighing the material;

[0009] A drive assembly, connected to the end of the rotating shaft, is used to drive the rotating shaft to rotate so as to convey the material from the weighing assembly to the discharge port.

[0010] Optionally, the feeding device further includes two sets of unblocking components, which are respectively disposed at the feed inlet and the discharge outlet.

[0011] Optionally, the unblocking component includes a pressure detection mechanism and a compressed air unblocking mechanism.

[0012] Optionally, the compressed air deblocking mechanism includes:

[0013] The compressed air delivery pipe is circular and surrounds the outer periphery of the inlet or the outlet;

[0014] The nozzle has one end connected to the compressed air delivery pipeline via a blow pipe, and the other end connected to the feed inlet or the discharge outlet. The blow pipe is set at a downward angle.

[0015] Optionally, the nozzle is provided in multiple forms, and the multiple nozzles are evenly distributed around the feed inlet or the discharge outlet.

[0016] Optionally, the rotating partition includes a rigid partition and a flexible partition, wherein the flexible partition is wrapped around the edge of the rigid partition.

[0017] Optionally, the flexible partition is fitted to the inner wall of the cylindrical receiving cavity.

[0018] Optionally, a sealing structure is provided at the interface between the rotating shaft and the receiving cavity.

[0019] Optionally, both the feed inlet and the discharge outlet are equipped with inspection doors.

[0020] Optionally, the inner wall of the cylindrical receiving cavity is provided with a mirror-finish wear-resistant coating.

[0021] Through the above technical solution, by setting a weighing component at the bottom of the cylindrical receiving cavity and facing the inlet, the device can accurately weigh the incoming alternative fuel. By driving the rotating shaft and multiple sets of rotating baffles on it through the drive component, the material is transported from the weighing component to the outlet, realizing continuous material transport. By metering the material, the material transport speed can be flexibly adjusted according to production needs, thereby ensuring the stability of the output. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a feeding device provided by this utility model;

[0023] Figure 2 This is a top view schematic diagram of a feeding device provided by this utility model;

[0024] Figure 3 This is a schematic diagram of the rotating partition in this utility model;

[0025] Figure 4 This is a schematic diagram of the compressed air blockage removal mechanism in this utility model.

[0026] Explanation of reference numerals in the attached figures

[0027] 1. Shell; 11. Inlet; 12. Cylindrical cavity; 13. Outlet; 2. Rotating shaft; 3. Rotating partition; 31. Rigid partition; 32. Flexible partition; 4. Weighing assembly; 5. Drive assembly; 6. Pressure detection mechanism; 7. Compressed air unblocking mechanism; 71. Compressed air delivery pipeline; 72. Blowpipe; 73. Nozzle; 8. Sealing structure; 9. Inspection door. Detailed Implementation

[0028] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0029] Combination Figure 1 and Figure 2 As shown, this utility model provides a feeding device for alternative fuel, including a housing 1, a rotating shaft 2, multiple sets of rotating partitions 3, a weighing component 4, and a driving component 5.

[0030] Specifically, the housing 1 includes an inlet 11, a cylindrical receiving cavity 12, and an outlet 13 connected sequentially from top to bottom, with the inlet 11 and outlet 13 being staggered. The rotating shaft 2 movably passes through the center of the cylindrical receiving cavity 12 and is rotatably connected to the cylindrical receiving cavity 12. Multiple sets of rotating partitions 3 are circumferentially arranged on the side wall of the rotating shaft 2, and the rotating partitions 3 divide the cylindrical receiving cavity 12 into multiple chambers. The weighing component 4 is located at the bottom of the cylindrical receiving cavity 12 and is directly opposite the inlet 11, and is used to weigh the material. The driving component 5 is connected to the end of the rotating shaft 2 and is used to drive the rotating shaft 2 to rotate so as to transport the material from the weighing component 4 to the outlet 13.

[0031] In this invention, the specific structure of the drive component 5 can be in various forms known to those skilled in the art, such as a variable frequency speed control motor, whose output end is connected to the rotating shaft 2 to drive the rotating shaft 2 to rotate.

[0032] In some embodiments, the feeding device may further include a control system, which includes a DCS control station. The DCS control station is connected to the weighing component 4 and the drive component 5 via signals. Through integration with the central control DCS control station, the feeding device can achieve automated and intelligent control. Users can set a suitable bin weight range according to production needs. If the bin weight exceeds the set range ratio within 10 minutes, the rotation speed of the drive component 5 can be automatically adjusted, thereby controlling the rotation speed of the rotating shaft 2 to increase or decrease accordingly, so as to maintain a stable output.

[0033] In summary, the specific working process of this feeding device is as follows: the material enters the cylindrical receiving cavity 12 from the feed inlet 11 and falls onto the weighing component 4. When the material reaches the preset weight, the control system sends a signal to start the drive component 5, which drives the rotating shaft 2 to rotate. The rotating partition 3, along with the rotation of the rotating shaft 2, transports the material from the weighing component 4 to the discharge port 13.

[0034] In this invention, to effectively prevent blockages during operation or to quickly resolve blockages in their early stages, thus avoiding production interruptions and equipment damage caused by blockages, the feeding device further includes two sets of unblocking components. These components are respectively located at the inlet 11 and the outlet 13. Specifically, each unblocking component includes a pressure detection mechanism 6 and a compressed air unblocking mechanism 7. Further, the compressed air unblocking mechanism 7 includes a compressed air delivery pipe 71 and a nozzle 73. The compressed air delivery pipe 71 is annular and surrounds the outer periphery of the inlet 11 or the outlet 13. One end of the nozzle 73 is connected to the compressed air delivery pipe 71 via a blowpipe 72, and the other end is connected to the inlet 11 or the outlet 13. The blowpipe 72 is inclined downwards.

[0035] The pressure detection mechanism 6 in this invention can employ a high-precision pressure sensor, installed at the inlet 11 and outlet 13 near the cylindrical receiving cavity 12, to monitor and record pressure data in real time. When an abnormal pressure is detected, the sensor can send a signal to the control system.

[0036] like Figure 4 As shown, the compressed air delivery pipe 71 is designed as a ring, surrounding the outer periphery of the inlet 11 or outlet 13 to ensure uniform airflow distribution. A valve is installed inside the pipe to control the supply of compressed air.

[0037] The nozzles 73 installed on the inlet 11 and outlet 13 are connected to the pipeline through the blow pipe 72. The blow pipe 72 is set downward so that the airflow can more effectively impact the blockage material.

[0038] After receiving a signal from the pressure detection mechanism 6, the control system can automatically open the valve of the compressed air delivery pipeline 71 and adjust the airflow intensity and time to adapt to different degrees of blockage. The control system also has a manual operation mode for manual intervention in special circumstances.

[0039] Furthermore, multiple nozzles 73 are provided, and the multiple nozzles 73 are evenly distributed circumferentially along the feed inlet 11 or the discharge outlet 13. It is understood that the number and layout of the nozzles 73 can be determined based on the size and shape of the feed inlet 11 or the discharge outlet 13, as well as the material characteristics. Typically, the number of nozzles 73 should be sufficient to ensure comprehensive airflow coverage in the clogging area. In terms of layout, the nozzles 73 are evenly distributed circumferentially along the feed inlet 11 or the discharge outlet 13, maintaining a consistent spacing between adjacent nozzles 73 to achieve a uniform blowing effect.

[0040] In summary, during practical use, since the alternative fuel feeding device provided by this utility model is used to supply fuel to the cement kiln pre-decomposition system, it is connected to the cement kiln pre-decomposition system. The cement kiln pre-decomposition system operates under negative pressure. Therefore, when the alternative fuel rotary feeding device is in normal use, under negative pressure, the material in the outlet 13 will be rapidly drawn into the cement kiln pre-decomposition system. Thus, under normal use, the pressure detected by the pressure detection mechanism 6 is always less than the standard atmospheric pressure. Once the outlet 13 becomes blocked, the blockage will divide the shell 1 into upper and lower parts. The upper shell 1 is connected to the external environment, and its gas pressure is atmospheric pressure, while the lower shell 1 is connected to the cement kiln pre-decomposition system, and its gas pressure is less than atmospheric pressure. At this time, the compressed air deblocking mechanism 7 can be automatically or manually controlled to promptly blow high-pressure gas through the blockage location to assist in material feeding.

[0041] In some embodiments, such as Figure 3 As shown, the rotating partition 3 includes a rigid partition 31 and a flexible partition 32, with the flexible partition 32 wrapping around the edge of the rigid partition 31. Furthermore, the flexible partition 32 is tightly fitted to the inner wall of the cylindrical receiving cavity 12 to reduce material getting stuck between the partition and the receiving cavity, thus preventing material blockage.

[0042] The rigid partition 31, as the main body of the rotating partition 3, is used to withstand material pressure and mechanical stress during rotation. It can be made of rigid materials (such as stainless steel, aluminum alloy, etc.) to ensure its structural strength and stability. The flexible partition 32, wrapped around the edge of the rigid partition 31, is made of flexible materials, such as PU or rubber, and has good elasticity and sealing properties. The flexible partition 32 fits tightly against the inner wall of the cylindrical receiving cavity 12, forming a sealing barrier that effectively prevents material from seeping into the cavity through tiny gaps, thus reducing the risk of material blockage. Furthermore, the sufficient flexibility of the flexible partition 32 ensures that the rotating partition 3 can rotate smoothly within the receiving cavity, thereby contributing to uniform material distribution and smooth flow during feeding.

[0043] To reduce system air leakage, in some embodiments, a sealing structure 8 is provided at the interface between the rotating shaft 2 and the receiving cavity. The sealing structure 8 can be selected in any suitable manner known to those skilled in the art; for example, a fiber-filled material can be used to seal the junction between the rotating shaft 2 and the housing 1 to reduce air leakage.

[0044] In some embodiments, both the feed inlet 11 and the discharge outlet 13 are provided with inspection doors 9. The inspection doors 9 facilitate maintenance and repair, improve the reliability of the feeding device, and make installation and disassembly more convenient.

[0045] In some embodiments, the inner wall of the cylindrical receiving cavity 12 is provided with a mirror-like wear-resistant coating. The surface of the mirror-like wear-resistant coating is as smooth as a mirror, making it difficult for materials to adhere. During the feeding process, the material can pass smoothly through the cylindrical receiving cavity 12, reducing material residue and accumulation on the cavity wall.

[0046] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, including the combination of various specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. A feeding device for alternative fuels, characterized in that, include: The housing (1) includes an inlet (11), a cylindrical receiving cavity (12), and an outlet (13) connected in sequence from top to bottom, and the inlet (11) and the outlet (13) are staggered. A rotating shaft (2) is movably inserted through the center of the cylindrical receiving cavity (12) and rotatably connected to the cylindrical receiving cavity (12); Multiple sets of rotating partitions (3) are arranged circumferentially on the side wall of the rotating shaft (2), and the rotating partitions (3) divide the cylindrical receiving cavity (12) into multiple chambers; Weighing component (4) is located at the bottom of the cylindrical receiving cavity (12) and is directly opposite the feed inlet (11) for weighing materials; A drive assembly (5) is connected to the end of the rotating shaft (2) and is used to drive the rotating shaft (2) to rotate so as to transport the material from the weighing assembly (4) to the discharge port (13).

2. The alternative fuel feeding device according to claim 1, characterized in that, The feeding device also includes two sets of unblocking components, which are respectively located at the feed inlet (11) and the discharge outlet (13).

3. The alternative fuel feeding device according to claim 2, characterized in that, The unblocking component includes a pressure detection mechanism (6) and a compressed air unblocking mechanism (7).

4. The alternative fuel feeding device according to claim 3, characterized in that, The compressed air deblocking mechanism (7) includes: The compressed air delivery pipe (71) is annular and surrounds the outer periphery of the inlet (11) or the outlet (13); The nozzle (73) is connected at one end to the compressed air delivery pipe (71) via the blow pipe (72) and at the other end to the feed inlet (11) or the discharge outlet (13). The blow pipe (72) is inclined downward.

5. The alternative fuel feeding device according to claim 4, characterized in that, The nozzle (73) is provided in multiple ways, and the multiple nozzles (73) are evenly distributed around the feed inlet (11) or the discharge outlet (13).

6. The alternative fuel feeding device according to claim 1, characterized in that, The rotating partition (3) includes a rigid partition (31) and a flexible partition (32), wherein the flexible partition (32) is wrapped around the edge of the rigid partition (31).

7. The alternative fuel feeding device according to claim 6, characterized in that, The flexible partition (32) is attached to the inner wall of the cylindrical receiving cavity (12).

8. The alternative fuel feeding device according to claim 1, characterized in that, A sealing structure (8) is provided at the interface between the rotating shaft (2) and the receiving cavity.

9. The alternative fuel feeding device according to claim 1, characterized in that, Inspection doors (9) are provided on both the feed inlet (11) and the discharge outlet (13).

10. The alternative fuel feeding device according to claim 1, characterized in that, The inner wall of the cylindrical cavity (12) is provided with a mirror-finish wear-resistant coating.

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