A material transfer system and its coal drying and dehydration system

Abstract

The present invention discloses a material transfer system and a coal drying and dehydration system thereof, which belongs to the field of coal drying technology. The material transfer system includes a quantitative feeding unit, a material transport unit and a finished product unloading unit; the material transport unit includes a turnover track group and a material transport vehicle, the material processing device and the finished product unloading unit are sequentially arranged on the material process track in the turnover track group, the empty vehicle return track corresponds to at least two rounds of material process tracks used, the connecting process track is provided with a process mobile platform, and the connecting return track is provided with a return mobile platform. The coal drying and dehydration system includes a material transfer system, and the material processing device is a drying reaction cabin. By forming a processing time difference through a transportation time difference, the material processing device processes the material in turns, forming a continuous processing effect, improving work efficiency, accurately and quantitatively conveying and discharging materials, and ensuring the material processing effect. It can be widely used in various material processing systems, especially coal drying systems.

Description

Technical Field

[0001] The present invention relates to the technical field of coal drying, and in particular to a material transfer system and a coal drying and dehydration system thereof. Background Art

[0002] Coal is the main energy source in my country. Among the dehydration and quality improvement methods, the most commonly used is the steam instantaneous dynamic quality improvement method. This dehydration method heats the material in a closed drying chamber, converting the water in the material into steam and releasing it, thereby achieving the purpose of dehydration. Because the drying chamber door needs to be closed to form a sealed space for dehydration, the drying chamber operates in an intermittent drying process, which means that existing conveying methods such as belt conveyors or scraper conveyors can only be in standby mode during the process, resulting in low processing efficiency and unable to meet the needs of large-scale coal drying. At the same time, in order to ensure the dehydration effect, the amount of material processed in the drying chamber at a single time must be controlled at a certain amount, and existing conveying methods such as belt conveyors and scraper conveyors cannot meet the quantitative output requirements. Summary of the Invention

[0003] The purpose of the present invention is to solve the above-mentioned technical problems and provide a material transfer system and its coal drying and dehydration system. During operation, multiple material process tracks are used in turns, and a processing time difference is formed through the transportation time difference, so that multiple material processing devices process materials in turns, and the material processing devices that originally processed intermittently are coordinated to achieve a continuous material processing effect, thereby improving work efficiency. At the same time, the quantitative feeding unit accurately and quantitatively transports and discharges materials to ensure the processing effect of a single material processing device. It can be widely used in various material processing systems, especially coal drying systems.

[0004] To achieve the above-mentioned objectives, the present invention provides the following solutions: The present invention discloses a material transfer system, including a quantitative feeding unit, a material transport unit and a finished product unloading unit; the material transport unit includes a turnover track group and a material transport vehicle, the turnover track group includes a material receiving track, a material process track, an empty vehicle return track, a connecting process track and a connecting return track, the material processing device and the finished product unloading unit are arranged in sequence on the material process track along the conveying direction, the empty vehicle return track corresponds to at least two rounds of the material process track, the connecting process track is provided with a process moving platform, the process moving platform is used to transfer the material transport vehicle between the material receiving track, the material process track and the empty vehicle return track, the connecting return track is provided with a return moving platform, the return moving platform is used to transfer the material transport vehicle between the material process track and the empty vehicle return track.

[0005] Preferably, the docking process track is located between the material receiving track and the empty vehicle return track, and the material receiving track and the empty vehicle return track are on the same extension line.

[0006] Preferably, the empty vehicle return track and the material process track are arranged in parallel.

[0007] Preferably, the docking process track and the docking return track are respectively arranged at both ends of the material process track.

[0008] Preferably, the quantitative feeding unit includes a feed buffer bin and a quantitative feeding device, the quantitative feeding device is located below the feeding trough of the feed buffer bin, and the material receiving track is located below the discharge end of the quantitative feeding device.

[0009] Preferably, the quantitative feeding device comprises a belt feeder having a weighing sensor.

[0010] Preferably, the finished product unloading unit includes a unloading area and a storage area, and the unloading area is provided with a tipping unloader corresponding to each of the material process tracks, and a finished product conveying belt for conveying materials to the storage area is provided under the tipping unloader.

[0011] Preferably, a finished product storage warehouse is provided in the storage area.

[0012] Preferably, a control unit is included, which coordinates the quantitative feeding unit, the material transportation unit and the finished product unloading unit.

[0013] Also disclosed is a coal drying and dehydration system, comprising the material transfer system described above, wherein the material processing device is a drying reaction chamber.

[0014] Compared with the prior art, the present invention has achieved the following technical effects:

[0015] 1. In the material transfer system of the present invention, a material handling device is provided on each of the multiple material process tracks. During operation, the multiple material process tracks are used in turn. The material transport vehicle and the material handling device stagger the processing times by the transportation time difference. The multiple material handling devices process the materials in turn, so that the multiple intermittent processing material handling devices can cooperate with each other to achieve continuous material processing, thereby ensuring the work efficiency of the process. At the same time, the quantitative feeding unit can accurately and quantitatively convey and discharge the material to ensure the processing effect of a single material handling device. The material transfer system can be widely used in various material handling systems, especially in coal drying systems.

[0016] 2. The coal drying and dehydration system of the present invention adopts a material transfer system, which can solve the problem that the existing drying system can only adopt an intermittent drying method when using a drying reaction chamber to dry coal, thereby significantly improving the process efficiency. At the same time, the feed amount is accurately transported, the drying effect is optimized, the product quality is improved, and the application range is wide. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the basic operating structure of the coal drying and dehydration system (including the material transfer system);

[0019] Figure 2 This is a structural diagram of an improved method for a coal drying and dehydration system (including a material transfer system);

[0020] Figure 3 This is a structural diagram of the second improved method of the coal drying and dehydration system (including the material transfer system).

[0021] Explanation of the accompanying symbols: 1. Feed buffer bin; 2. Belt feeder; 3. Weighing sensor; 4. Material transport vehicle; 5. Material receiving track; 6. Material process track; 7. Empty vehicle return track; 8. Connecting process track; 9. Connecting return track; 10. Process mobile platform; 11. Return mobile platform; 12. Drying reaction chamber; 13. Tipping unloader. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example

[0023] This embodiment provides a material transfer system, such as Figures 1 to 3As shown, it includes a quantitative feeding unit, a material transport unit and a finished product unloading unit. The material transport unit includes a turnover track group and a material transport vehicle 4 (with its own driving force). The turnover track group includes a material receiving track 5, a material process track 6, an empty vehicle return track 7, a connecting process track 8 and a connecting return track 9. The material processing device (material processing device such as material processing equipment or a drying reaction chamber 12, etc.) and the finished product unloading unit are arranged in sequence on the material process track 6 along the conveying direction. The connecting process track 8 is provided with a process mobile platform 10, and the process mobile platform 10 is used to transfer the material transport vehicle 4 between the material receiving track 5, the material process track 6, and the empty vehicle return track 7. The connecting return track 9 is provided with a return mobile platform 11, and the return mobile platform 11 is used to transfer the material transport vehicle 4 between the material process track 6 and the empty vehicle return track 7.

[0024] A single empty vehicle return track 7 corresponds to at least two material process tracks 6, and two or more material process tracks 6 are used in turns (the process of using turns will be explained in detail below). Figure 1 As shown in the figure, there is an empty car return track 7, corresponding to two material process tracks 6, which is the most basic material transfer system. Figure 2 As shown, there is an empty car return track 7, corresponding to four material process tracks 6, which belongs to a one-to-many (more than three material process tracks 6) material transfer system, and is the material transfer system of the improved method 1. Figure 3 As shown, there are two empty return tracks 7, corresponding to four material process tracks 6, and each empty return track 7 corresponds to two, which belongs to a two-to-many (more than four material process tracks 6) material transfer system, which is the material transfer system of improved method 2. It should be noted that the number of corresponding material receiving tracks 5 must correspond to the empty return track 7. Of course, there can also be more than three empty return tracks 7, and each empty return track 7 corresponds to more than two, which belongs to a many-to-many (more than six material process tracks 6) material transfer system, which is the material transfer system of improved method 3.

[0025] Working principle:

[0026] ① Basic material transfer system working process:

[0027] The material is filled into the hopper of the material transport vehicle 4 waiting below through the quantitative feeding unit, and then moves along the material receiving track 5 to the process mobile platform 10. The process mobile platform 10 docks with the first material process track 6. The material transport vehicle 4 moves into the first material process track 6 and moves along the first material process track 6 to the material processing device to process the material. The process mobile platform 10 moves back to the material receiving track 5 to receive the new material transport vehicle 4, and then sends the new material transport vehicle 4 to the second material process track 6. After the material processing device on the first material process track 6 has finished the material, the material transport vehicle 4 carries the finished material into the finished product. The unloading unit unloads the material, and the material transport vehicle 4 that has unloaded the material moves to the return mobile platform 11. The return mobile platform 11 docks with the empty vehicle return track 7, and the material transport vehicle 4 returns along the empty vehicle return track 7. The process mobile platform 10 docks with the empty vehicle return track 7, and then sends the material transport vehicle 4 to the material receiving track 5. The material transport vehicle 4 that has unloaded the material goes to the quantitative feeding unit again to receive the material. After the material is processed by the material processing device on the second material process track 6, the steps are the same as the material transport vehicle 4 on the first material process track 6. The first material process track 6 and the second material process track 6 are processed in rounds to achieve continuous processing of the material.

[0028] ② Working process of the material transfer system of improvement method 1:

[0029] Refer to the working process in ① and follow this process to process the first, second, third...Nth material process track 6 rounds. The pick-up interval of the material transport vehicle 4 can be adjusted accordingly based on the actual material processing time, the running speed of the material transport vehicle 4, the process mobile platform 10, the return mobile platform 11, etc.

[0030] ③ Working process of the material transfer system of improvement method 2:

[0031] Refer to the operating process in ① and follow this analogy, which is equivalent to two or more basic material transfer systems operating simultaneously. Specifically, the dosing unit simultaneously fills two or more material transport vehicles 4, and then the material handling devices on two or more material processing tracks 6 simultaneously process the material. The pick-up and drop-off intervals of the material transport vehicles 4 in each basic material transfer system can be adjusted accordingly based on the actual processing time of the material processing devices and the operating speeds of the material transport vehicles 4, the process mobile platform 10, and the return mobile platform 11.

[0032] In this embodiment, Figures 1 to 3As shown, the connecting process track 8 is located between the material receiving track 5 and the empty vehicle return track 7, and the material receiving track 5 and the empty vehicle return track 7 are on the same extension line. In this way, when the process mobile platform 10 docks with the material receiving track 5, it means that it also docks with the empty vehicle return track 7 at the same time. Then, when the empty vehicle returns, there is no need to dock with the empty vehicle return track 7 first, and then dock with the material receiving track 5, which saves docking time, plans the track route, and improves processing efficiency.

[0033] In order to further optimize the processing efficiency, in this embodiment, Figures 1 to 3 As shown, the empty vehicle return track 7 and the material process track 6 are arranged in parallel, that is, several material process tracks 6 and the empty vehicle return track 7 are parallel to each other. This can optimize the travel routes of the process mobile platform 10, the return mobile platform 11, and the material transport vehicle 4, thereby improving transportation efficiency. Specifically, the empty vehicle return track 7 and the material process track 6 can be laid on a flat surface and arranged side by side on the plane. The empty vehicle return track 7 and the material process track 6 can also be erected on a vertical frame and arranged side by side in the vertical direction. The former requires a larger floor space but saves vertical space, while the latter requires a larger vertical space but saves floor space. Therefore, the arrangement can be based on actual needs. However, considering the load and safety issues, it is usually adopted to set the track on a flat surface.

[0034] In this embodiment, Figures 1 to 3 As shown, the connecting process track 8 and the connecting return track 9 are respectively arranged at both ends of the material process track 6 to further optimize the track route.

[0035] In this embodiment, Figures 1 to 3 As shown, the quantitative feeding unit includes a feed buffer 1 and a quantitative feeding device. The quantitative feeding device is located below the feed trough of the feed buffer 1, and a material receiving track 5 is located below the discharge end of the quantitative feeding device. After the material is fed into the feed buffer 1, it is fed through the feed trough to the predetermined amount of the feeding device, which then supplies the material to the material transport vehicle 4 in a quantitative manner. If multiple empty vehicle return tracks 7 are provided, multiple material receiving tracks 5 and multiple quantitative feeding devices are provided.

[0036] In this embodiment, Figures 1 to 3 As shown, the quantitative feeding device includes a belt feeder 2 with a built-in weighing sensor 3. The weighing sensor 3 can constantly monitor the weight of the material on the belt feeder 2. Once the material reaches a preset weight, the feeding of the feed trough is stopped, thus achieving quantitative feeding. Of course, the above is only a preferred method, and other quantitative feeding devices can also be used.

[0037] In this embodiment, Figures 1 to 3As shown, the finished product unloading unit includes an unloading area and a storage area. The unloading area is equipped with a tipping unloader 13. The number and position of the tipping unloader 13 correspond to each material progress track 6. A finished product conveyor belt (not shown) is installed below each tipping unloader 13. The finished product conveyor belt can transport the processed materials to the storage area. The specific unloading process is that the tipping unloader 13 flips the material transport vehicle 4 over to transfer all the materials in the hopper to the finished product conveyor belt at the bottom.

[0038] Furthermore, in this embodiment, if Figures 1 to 3 As shown, a finished product storage warehouse is provided in the storage area for storing finished product materials, and the finished product conveyor belt can directly pass into the finished product storage warehouse.

[0039] Furthermore, in this embodiment, if Figures 1 to 3 As shown, the system includes a control unit that coordinates the quantitative feeding unit, material transport unit, and finished product unloading unit. The control unit controls material processing time, the loading capacity of the material transport vehicle 4, and the routes and speeds of the material transport vehicle 4, the on-process mobile platform 10, and the return mobile platform 11. This ensures continuous material processing, high fault tolerance, and process efficiency. It also features a high degree of automation, excellent safety, intelligent processing, smooth transportation, optimized drying effects, and improved product quality, making it widely applicable. The control unit can utilize a PLC controller for logical control, ensuring the smooth operation of the entire material transfer system. Example

[0040] This embodiment provides a coal drying and dehydration system, such as Figures 1 to 3 As shown, the material transfer system includes the material transfer system of Example 1, wherein the material processing device is a drying reaction chamber 12. After the material transport vehicle 4 transports the coal into the drying reaction chamber 12, the drying reaction chamber 12 performs the drying process. The multiple material process tracks 6 and multiple drying reaction chambers 12 are used in rotation to meet the requirements of continuous operation, avoiding the problems of a single traditional drying system using only one drying reaction chamber 12 for coal drying and dehydration, such as long waiting time, discontinuous processing, and low processing efficiency.

[0041] Working principle:

[0042] Coal is fed into the hopper of a waiting material transport vehicle 4 via a quantitative feeding unit. The vehicle 4 then moves along the material receiving track 5 onto the process mobile platform 10, which docks with the material process track 6. The vehicle 4 then moves into the internal drying chamber 12, where a sealed environment is created. Drying begins at approximately 200°C and 2.5 MPa for 5 to 25 minutes. Other lines continue to operate during the drying process. The first dried vehicle 4 is unloaded by the finished product unloading unit. The empty vehicle 4 then returns to the feed point via the return mobile platform 11, the empty return track 7, and the material receiving track 5, awaiting reloading. The process mobile platform 10 and the return mobile platform 11 each have a single load-bearing capacity of 0 to 10 tons.

[0043] The invention uses specific examples to illustrate the principles and implementation methods of the invention. The above examples are only intended to help understand the method and core concept of the invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the invention. In summary, the contents of this specification should not be construed as limiting the invention.

Claims

1. A material transfer system, characterized in that: It includes a quantitative feeding unit, a material transportation unit, a finished product unloading unit and a control unit; the material transportation unit includes a turnover track group and a material transport vehicle, the turnover track group includes a material receiving track, a material process track, an empty vehicle return track, a connecting process track and a connecting return track, the material processing device and the finished product unloading unit are sequentially arranged on the material process track along the conveying direction, the empty vehicle return track corresponds to at least two rounds of the material process track, the connecting process track is provided with a process moving platform, the process moving platform is used to transfer the material transport vehicle between the material receiving track, the material process track and the empty vehicle return track, the connecting return track is provided with a return moving platform, the return moving platform is used to transfer the material transport vehicle between the material process track and the empty vehicle return track; The connecting process track is located between the material receiving track and the empty vehicle return track, and the material receiving track and the empty vehicle return track are on the same extension line; The empty vehicle return track and the material process track are arranged in parallel; The connecting process track and the connecting return track are respectively arranged at two ends of the material process track; The quantitative feeding unit includes a feed buffer bin and a quantitative feeding device, wherein the quantitative feeding device is located below the feed trough of the feed buffer bin, and the material receiving track is located below the discharge end of the quantitative feeding device; The finished product unloading unit includes an unloading area and a storage area. The unloading area is provided with a dumper unloader corresponding to each of the material process tracks. A finished product conveying belt for conveying materials to the storage area is provided below the dumper unloader. The control unit coordinates the quantitative feeding unit, the material transportation unit and the finished product unloading unit.

2. A material transfer system according to claim 1, characterized in that: The quantitative feeding device includes a belt feeder with a weighing sensor.

3. A material transfer system according to claim 1, characterized in that: The storage area is provided with a finished product storage warehouse.

4. A coal drying and dehydration system, characterized in that: It comprises the material transfer system according to any one of claims 1 to 3, wherein the material processing device is a drying reaction chamber.

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