Track kiln type material drying equipment and material drying method

Abstract

The invention discloses orbital kiln type material drying equipment and a material drying method. The track kiln type material drying equipment comprises a drying kiln body provided with a loading vehicle running track; the rail type loading vehicle runs on the loading vehicle running rail and is used for feeding materials into the drying kiln body according to a set speed for drying treatment; the hot air generating device is arranged outside the orbital kiln type drying kiln body and used for providing hot air for the orbital kiln type drying kiln body; the feeding device conveys materials to the rail-mounted loading vehicle through a chute, and the loading thickness of the materials on the rail-mounted loading vehicle can be controlled by controlling the speed of the rail-mounted loading vehicle and the height of the gate plate. The problems that existing material drying equipment needs lifting operation, and the damage rate is high due to material collision in the drying process are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of material drying equipment, and more specifically, relates to a track kiln type material drying equipment and a material drying method. Background Art

[0002] In the complex process of material processing, especially for granular materials, drying has become an indispensable key link. The main goal of this step is to remove excess water from the material to meet specific moisture content standards, thereby ensuring stable quality and excellent performance of the material. Drying occupies a core position in the entire processing flow and plays a vital role in maintaining the stability of the material, extending its shelf life, and meeting the quality requirements of the raw materials in subsequent processing stages.

[0003] Traditional material drying equipment usually uses two types of drying equipment: rotary drying kiln and vertical drying kiln. The rotary drying kiln adopts the principle of lifting material drying. The material is lifted by the rotation of the cylinder and the internal lifting plate, so that the surface of the material contacts the flue gas for heat exchange and completes the evaporation of water. The greater the lifting amplitude of the material, the larger the heat exchange area, and the better the material drying effect. However, when using this drying method to dry materials, the collision between materials leads to a high breakage rate of the materials. Production companies suffer huge losses every year due to the breakage of materials.

[0004] For vertical drying systems that are as high as more than ten meters or dozens of meters, the materials need to be lifted from the ground to the top entrance of the dryer to enter the dryer, resulting in high energy consumption for lifting and conveying charcoal materials, inconvenient maintenance, and safety risks in high-altitude operations; between the materials in the dryer cylinder, the materials and the spiral guide plates and the cylinder walls are squeezed, rotated, and creep downward from top to bottom, and come into countercurrent contact with the high-temperature hot air to achieve drying, which will cause certain damage to the materials in the process; during the charcoal drying process, the upper feed exerts pressure on the middle and lower materials, causing the materials to burn during the high-temperature drying process to produce large pieces of adhesion and solidification. Although a nitrogen fire extinguishing device is installed, critical combustion adhesion cannot be avoided, resulting in changes in the particle size ratio of the materials entering the furnace, affecting normal, compliant and stable production.

[0005] Therefore, it is of great significance to develop an efficient, energy-saving and environmentally friendly material drying equipment. Summary of the invention

[0006] In view of the problems that the existing material drying equipment requires lifting operations and the material collision during the drying process leads to a high breakage rate, the purpose of the present invention is to provide a rail kiln material drying equipment, which includes: a drying kiln body, which is provided with a loader track; a rail-type loader, which travels on the loader track and is used to deliver the material into the drying kiln body at a set speed for drying; a hot air generating device, which is arranged outside the drying kiln body and is used to provide hot air to the drying kiln body; a feeding device, which conveys the material to the rail-type loader through a chute; wherein, when the rail-type loader travels along the loader track, the hot air enters the drying kiln body from the air inlet of the drying kiln body, and the hot air penetrates the material layer on the rail-type loader in an upward-in-and-down-out manner to achieve material drying.

[0007] Furthermore, the hot air enters from the upper, left and right sides and is discharged from the bottom to penetrate the material layer on the rail-type loader, thereby achieving material drying.

[0008] Furthermore, the rail kiln material drying equipment also includes: a powder collecting device, which is arranged at the bottom of the rail loading vehicle and / or the air outlet of the drying kiln body, and is used to collect material powder generated during the material drying process.

[0009] Furthermore, the powder collected by the powder collecting device enters the hot air generating device and burns to generate high-temperature flue gas; the outlet duct of the variable frequency air distribution fan is connected to the outlet duct of the hot air generating device, and the ambient air input by the variable frequency air distribution fan is mixed with the high-temperature flue gas output by the hot air generating device to form the hot air; the hot air temperature can be adjusted by adjusting the mixing ratio of the ambient air output by the variable frequency air distribution fan and the high-temperature flue gas output by the hot air generating device; wherein, the outlet duct of the hot air generating device is provided with a cyclone dust collector and an environmental protection device for purifying the high-temperature flue gas.

[0010] Furthermore, a plurality of drying areas with different temperatures are arranged in the drying kiln body; wherein each of the drying areas is provided with a variable frequency air distribution fan and a standby fan.

[0011] Furthermore, three temperature zones, namely, a low-temperature drying zone, a medium-temperature drying zone and a high-temperature drying zone, are arranged in the drying kiln body; during the drying process, the rail-type loader passes through the low-temperature drying zone, the medium-temperature drying zone and the high-temperature drying zone in sequence.

[0012] Furthermore, sieve plates are provided on the left side, right side and bottom of the rail-mounted loader, and the drying kiln body is provided with a powder receiving chute; wherein, when the rail-mounted loader travels along the loader's travel track, the sieve plates are located on the side and bottom of the rail-mounted loader, and the material powder generated during the drying process can pass through the sieve plates into the powder receiving chute.

[0013] Furthermore, the air outlet of the drying kiln body is provided with a cyclone dust removal device and / or a bag dust removal device.

[0014] Furthermore, the rail kiln material drying system also includes a PLC intelligent centralized control system, which consists of a temperature and humidity detection module: a temperature and humidity detection module, a temperature control module and a speed control module; the temperature and humidity detection module is arranged in the drying kiln body, and is used to detect the temperature and humidity during the drying process in real time; the temperature control module is used to control the air volume delivered by the variable frequency air distribution fan; the speed control module is used to control the driving speed of the rail-type loader; the temperature and humidity detection module is electrically connected to the temperature control module and the speed control module.

[0015] Furthermore, the present application provides a material drying method, which uses any of the rail kiln material drying equipment as described above, and the material drying method includes the following steps: a rail-type loader loads material of a target loading thickness and drives into a drying kiln body; a hot air generating device provides hot air outside the drying kiln that penetrates the material layer of the target loading thickness to dry the material layer.

[0016] Furthermore, when the rail-mounted loader travels in the drying kiln body, the material powder enters the material powder collecting trough through the sieve plate and the powder receiving chute at the bottom of the rail-mounted loader; the exhaust gas generated during the drying process is discharged from the chimney after being dedusted by the cyclone dust collector and the bag dust collector, and the material powder in the cyclone dust collector and the bag dust collector enters the material powder collecting trough; wherein, the material powder collected in the material powder collecting trough during the material drying process enters the hot air generating device for combustion to obtain hot air for drying the material.

[0017] Technical effects and advantages of the present invention:

[0018] 1. The rail-type loader runs on the ground, and there is no need to lift the materials during the whole process, which will not generate a lot of energy consumption for lifting materials, and there is no safety risk of high-altitude operation, and it is easy to maintain. In addition, after the materials are loaded onto the rail-type loader, the materials and the rail-type loader are relatively still. During the whole drying process, there will be no collision between the materials, and there will be no collision and friction between the materials and the rail-type loader, thus ensuring a low breakage rate during the drying process.

[0019] 2. By setting a powder collection device at the bottom of the rail loader, the material powder generated during the material drying process and located at the bottom of the rail loader can be collected and recycled, thereby reducing the material drying cost. In addition, since the rail kiln material drying equipment dries the material by passing hot air through the material layer on the rail loader and exchanging heat with the material layer, the waste gas discharged from the air outlet of the drying kiln will also carry material powder. If the waste gas is discharged directly, it will pollute the environment. By setting a cyclone dust removal device and a bag dust removal device at the air outlet of the drying kiln to treat the waste gas, the powder finally collected enters the powder collection device, and the material powder in the waste gas discharged from the air outlet of the drying kiln can be collected. On the one hand, it can avoid direct discharge of waste gas carrying material powder to cause environmental pollution, protect the environment and the health of operators; on the other hand, it can also recycle the material powder to reduce the material drying cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the connection of various parts of a track kiln material drying equipment provided by the present application;

[0021] Figure 2 It is a schematic diagram of drying of materials loaded onto a rail-mounted loading vehicle in this application;

[0022] In the figure: 1. Drying kiln body; 2. Low-temperature drying area; 3. Medium-temperature drying area; 4. High-temperature drying area; 5. Cyclone dust removal device; 6. Bag dust removal device; 7. Chimney; 8. Material powder collection trough; 9. Hot air generating device; 10. Environmental protection device; 11. Frequency conversion air distribution fan; 21. Air inlet; 22. Rail-mounted loader; 23. Screen plate; 24. Wheel; 25. Loading vehicle travel track; 26. Powder receiving chute; 27. Air outlet; 28. Feed chute; 29. ​​Gate. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0024] See also Figure 1 , which is a schematic diagram of the connection of various parts of a track kiln material drying equipment provided by this application, showing in detail the layout and connection method of each component. Figure 1 and Figure 2 The track kiln material drying equipment includes, for example: a drying kiln body 1, provided with a loader track 25; a track-type loader 22, traveling on the loader track 25, for delivering materials into the drying kiln body 1 for drying at a set speed; a hot air generating device 9, arranged at the air inlet end of the drying kiln body 1, for providing hot air to the drying kiln body 1; wherein, when the track-type loader 22 travels along the loader track 25, the hot air enters the drying kiln body 1 from the air inlet 21 of the drying kiln body 1, and the hot air penetrates the material layer on the track-type loader 22 in an upper-in-lower-out manner to achieve material drying.

[0025] For example, the material is lignite. After the lignite is loaded onto the rail-mounted loader 22 to form a lignite layer of a certain loading thickness, the rail-mounted loader 22 drives into the drying kiln body 1 at a set speed along the loader's driving track 25, thereby delivering the lignite into the drying kiln body 1 at the set speed; when the rail-mounted loader 22 drives in the drying kiln body 1 along the loader's driving track 25, hot air enters the drying kiln body 1 from the air inlet 21 of the drying kiln body 1, and then penetrates the lignite layer on the rail-mounted loader 22 to dry the lignite. The hot air exchanges heat with the lignite layer to become exhaust gas, and is blown out from the air outlet 27 of the drying kiln body 1.

[0026] It is understandable that the rail-type loader 22 runs on the ground, and there is no need to lift the semi-coke during the whole process, which will not generate a large amount of semi-coke lifting energy consumption, and there is no safety risk of high-altitude operation, and maintenance is convenient. In addition, after the semi-coke is loaded onto the rail-type loader 22, the semi-coke and the rail-type loader 22 are relatively stationary. During the whole drying process, there will be no collision between the semi-cokes, and there will be no collision and friction between the semi-coke and the rail-type loader 22, thereby ensuring a low breakage rate during the drying process.

[0027] Preferably, the hot air enters from the upper, left and right sides and exits from the lower side to penetrate the material layer on the rail-type loader 22 to dry the material. The drying effect of the material can be further improved by entering from three sides and exiting from one side.

[0028] Furthermore, the track kiln material drying equipment further includes: a powder receiving chute 26, which is arranged at the bottom of the track loading vehicle 22 and / or the air outlet 27 of the drying kiln body 1, and is used to collect material powder generated during the material drying process. For example, the track kiln material drying equipment may be provided with a powder receiving chute 26 only at the bottom of the track loading vehicle 22, or may be provided with a powder receiving chute 26 only at the air outlet 27 of the drying kiln body 1, or may be provided with corresponding powder receiving chute 26 at both the bottom of the track loading vehicle 22 and the air outlet 27 of the drying kiln body 1.

[0029] It should be noted that during the drying process of the material, material powder with a particle size smaller than the discharge particle size will be generated, which is not needed when the material is dried and discharged. By setting a powder receiving chute 26 at the bottom of the rail-type loader 22, the material powder generated during the material drying process can be collected and recycled, thereby reducing the material drying cost. In addition, since the rail kiln material drying equipment dries the material by passing hot air through the material layer on the rail-type loader 22, and the hot air and the material layer perform heat exchange, the waste gas discharged from the air outlet 27 of the drying kiln body 1 will also carry material powder. If the waste gas is discharged directly, it will pollute the environment. By setting a cyclone dust removal device 5 and a bag dust removal device 6 behind the air outlet 27 of the drying kiln body 1, the powder in the waste gas is processed, and finally a powder collection device is set to collect the material powder from the dust removal device. On the one hand, it can avoid direct discharge of waste gas carrying material powder to cause environmental pollution, protect the environment and the health of the operator; on the other hand, it can also recycle the material powder and reduce the material drying cost.

[0030] Furthermore, the left side, right side and bottom of the rail-type loader 22 are provided with sieve plates 23, and the drying kiln body 1 is provided with a powder receiving chute 26; wherein, when the rail-type loader 22 travels along the loader travel track 25, the material powder generated during the drying process can enter the powder receiving chute 26 through the sieve plate 23. For example, the rail-type loader 22 is a four-wheel vehicle, made of high temperature resistant and corrosion resistant materials, adapted to the high temperature and corrosion characteristics of the material. Two loader travel tracks 25 are laid in the drying kiln body 1, and the powder receiving chute 26 is located between the two loader travel tracks 25. For example, according to the site conditions, the guide rail can be designed to be annular or long strips for ground operation, and the annular shape occupies less space than the long strip. Among them, the aperture of the sieve plate 23 depends on the material discharge requirements of the user, and the aperture of the sieve plate 23 can be adjusted according to the material requirements of the user. In a specific embodiment, the aperture of the sieve plate 23 can be 5mm.

[0031] By setting a sieve plate 23 on the rail-type loader 22 and a powder receiving chute 26 on the drying kiln body 1, when the wheels 24 of the rail-type loader 22 travel along the loader's travel track 25, the material powder generated during the material drying process can be automatically discharged from the sieve plate 23 at the bottom of the rail-type loader 22 into the powder receiving chute 26. No human intervention is required, automatic slag collection is achieved, and there will be no problems of blockage, stagnation, and maintenance.

[0032] Furthermore, the air outlet 27 of the drying kiln body 1 is provided with a cyclone dust removal device 5 and / or a bag dust removal device 6. Preferably, an environmental protection device 10 is also provided behind the cyclone dust removal device 5. Among them, the heat source of the hot air generating device is not limited to the recycled material powder, but can also burn coal, etc. The environmental protection device 10 is provided behind the cyclone dust removal device 5, which can purify the pollutants in the exhaust gas and avoid the exhaust gas directly discharged to pollute the environment when the hot air generating device burns other fuels such as coal.

[0033] It is understandable that the cyclone dust removal device 5 can utilize the centrifugal force generated by the rotating dust-containing airflow to separate the material powder from the exhaust gas. For example, the cyclone dust removal device 5 is a cyclone dust collector. When the exhaust gas carrying the material powder is discharged from the air outlet 27 of the drying kiln body 1, it enters the cyclone dust collector through the exhaust gas discharge pipe. The exhaust gas carrying the material powder generates centrifugal force during the rotation process, and the material powder with a density greater than that of the gas is thrown toward the wall of the device. Once the material powder contacts the wall of the device, it loses its inertial force and falls along the wall by the momentum of the inlet velocity and the downward gravity, and enters the dust discharge pipe of the cyclone dust collector. The bag dust removal device 6 can separate the material powder from the exhaust gas through a bag filter element.

[0034] In a specific embodiment, the waste gas carrying material powder discharged from the air outlet 27 of the drying kiln body 1 first passes through the cyclone dust removal device 5 for primary dust removal, then passes through the bag dust removal device 6 for secondary dust removal, and then is discharged from the chimney 7.

[0035] Furthermore, the powder collected by the material powder collection tank 8 enters the hot air generating device 9 to burn and generate high-temperature flue gas; the outlet duct of the variable frequency air distribution fan 11 is connected to the outlet duct of the hot air generating device 9, and the cold air output by the variable frequency air distribution fan 11 is mixed with the high-temperature flue gas output by the hot air generating device 9 to form the hot air; the temperature of the output hot air can be adjusted by adjusting the mixing ratio of the cold air output by the variable frequency air distribution fan 11 and the high-temperature flue gas output by the hot air generating device 9. For example, the rail-type loader 22 is provided with a loader driving motor, which can accurately control the frequency of the variable frequency air distribution fan 11 and the operating frequency of the loader driving motor according to the thickness and humidity of the material layer, so as to accurately control the temperature and humidity in the drying kiln body 1, and the driving speed of the rail-type loader 22, so as to ensure the drying quality of the material; wherein, the outlet duct of the hot air generating device is provided with an environmental protection device 10 for purifying the high-temperature flue gas.

[0036] By using the material powder collected by the material powder collecting tank 8 as fuel for the hot air generating device 9, the collected material powder can be reused to reduce the material drying cost. Since sulfur and nitrate compounds exist in the high-temperature flue gas generated by the combustion of the material powder, it is necessary to first pass through the cyclone dust removal device 5 and the environmental protection device 10 for desulfurization and denitrification before being supplied as a heat source to the drying kiln body 1. The variable frequency air distribution fan 11 can provide ambient wind with different air volumes and wind speeds to be matched with the high-temperature flue gas, thereby providing hot air of different temperatures for the drying kiln body 1.

[0037] Furthermore, a plurality of drying areas with different temperatures are arranged in the drying kiln body 1, wherein each drying area is provided with a variable frequency air distribution fan 11 and a standby fan. The ability to achieve precise temperature control of different zones, ensuring excellent drying quality and low energy consumption are significant advantages of this belt drying system.

[0038] Furthermore, three temperature zones, namely, a low-temperature drying zone 2, a medium-temperature drying zone 3 and a high-temperature drying zone 4, are arranged in the drying kiln body 1; during the drying process, the rail-type loader 22 passes through the low-temperature drying zone 2, the medium-temperature drying zone 3 and the high-temperature drying zone 4 in sequence, so that the material can be heated quickly and evenly, thereby achieving efficient drying.

[0039] In a specific embodiment, the three temperature zones of the low temperature drying zone 2, the medium temperature drying zone 3 and the high temperature drying zone 4 are all provided with a variable frequency air distribution fan 11 and a standby fan, and the standby fan is a standby variable frequency air distribution fan 11, so as to realize the one-on-one standby setting of the variable frequency air distribution fan 11. For example, the drying temperature in the drying kiln body 1 is 12°C-40°C; the inlet air temperature of the low temperature drying zone 2 is 150°C, the inlet air temperature of the medium temperature drying zone 3 is 200°C, and the inlet air temperature of the high temperature drying zone 4 is 250°C.

[0040] Furthermore, the rail kiln material drying equipment also includes a feeding device, which transfers the material to the rail loading vehicle 22 through a feeding chute 28. A height-adjustable gate 29 is provided on one side of the discharge end of the feeding chute 28. The loading thickness of the material on the rail loading vehicle 22 can be controlled by controlling the speed of the rail loading vehicle 22 and / or the distance between the lower end surface of the gate 29 and the rail loading vehicle 22. For example, the loading thickness of the material on the rail loading vehicle 22 is 20mm-50mm; the travel speed of the rail loading vehicle 22 is 1m / min-3m / min.

[0041] For example, the feeding device is provided with a hopper and a feeder, and a feeding chute 28 is used for material conveying. When the feeding device feeds the material into the rail-type loader 22, a material layer is formed on the rail-type loader 22. The hopper and the feeder can control the rate and uniformity of the material entering the rail-type loader 22 to avoid material blockage or too fast flow; the use of the feeding chute 28 for material conveying can reduce the powder rate during material feeding. When the rail-type loader 22 travels at a relatively fast speed, the loading thickness of the material layer is relatively thin; when the rail-type loader 22 travels at a relatively slow speed, the loading thickness of the material layer is relatively thick.

[0042] For example, the smaller the distance between the lower end surface of the gate plate 29 and the rail-mounted loader 22, the smaller the loading thickness of the material on the rail-mounted loader 22; the larger the distance between the lower end surface of the gate plate 29 and the rail-mounted loader 22, the greater the loading thickness of the material on the rail-mounted loader 22.

[0043] Furthermore, the rail kiln material drying equipment also includes a PLC intelligent centralized control system, which consists of a temperature and humidity detection module, a temperature control module and a speed control module; the temperature and humidity detection module is arranged in the drying kiln body 1, and is used to detect the temperature and humidity during the drying process in real time; the temperature control module is used to control the air volume delivered by the variable frequency air distribution fan 11; the speed control module is used to control the driving speed of the rail-type loader 22; the temperature and humidity detection module is electrically connected to the temperature control module and the speed control module to control the driving speed of the rail-type loader 22 and the air volume of the ambient wind provided by the variable frequency air distribution fan 11 to ensure the material drying quality.

[0044] For example, intelligent and precise frequency conversion control can be realized for the loading thickness of the semi-coke layer, the speed of the rail-type loading vehicle 22, the air volume, wind speed, and hot air temperature of the frequency conversion air distribution fan 11 according to the needs. The operation of this rail kiln material drying equipment only requires one person to check in, and remote wireless monitoring, metering, alarming, and operation can be realized. When the normal production is stopped for maintenance, the rail axle can be cleaned and lubricated to ensure the long-term stable operation of the system with low operation and maintenance costs.

[0045] Furthermore, the present application provides a material drying method, which uses any of the rail kiln material drying equipment as described above, and the material drying method includes the following steps: the rail loader 22 loads the material of the target loading thickness and drives into the drying kiln body 1; the hot air generating device 9 and the variable frequency air distribution fan 11 provide hot air that penetrates the material layer of the target loading thickness to dry the material layer.

[0046] Furthermore, when the rail-mounted loader 22 travels in the drying kiln body 1, the material powder passes through the sieve plate 23 at the bottom of the rail-mounted loader 22 and the powder receiving chute 26 into the material powder collecting tank 8; the exhaust gas generated during the drying process is discharged from the chimney 7 after being dedusted by the cyclone dust collector 5 and the bag dust collector 6, and the material powder in the cyclone dust collector 5 and the bag dust collector 6 enters the material powder collecting tank 8; wherein, the material powder collected in the material powder collecting tank 8 during the material drying process can enter the hot air generating device 9 for combustion to obtain hot air for drying the material.

[0047] In a specific embodiment, the material powder can be collected and transported out, or used to provide a heat source.

[0048] In the description of the present invention, it is necessary to understand that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0049] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A track kiln material drying equipment, characterized in that: The track kiln type material drying equipment comprises: The drying kiln body (1) is provided with a loader travel track (25); A track-type loading vehicle (22) running on the loading vehicle running track (25) is used to deliver the material into the drying kiln body (1) at a set speed for drying; A hot air generating device (9), arranged outside the drying kiln body (1), for providing hot air to the drying kiln body (1); A feeding device, which transfers materials to the rail-mounted loading vehicle (22) through a feeding chute (28); When the rail-type loader (22) travels along the loader travel track (25), the hot air enters the drying kiln body (1) from the air inlet (21) of the drying kiln body (1), and the hot air penetrates the material layer on the rail-type loader (22) in an upward in-and-down-out manner, thereby achieving material drying.

2. The track kiln type material drying equipment according to claim 1, characterized in that: The hot air enters from the upper, left and right sides and is discharged from the lower side to penetrate the material layer on the rail-type loading vehicle (22), thereby achieving material drying.

3. The track kiln type material drying equipment according to claim 1, characterized in that: A height-adjustable gate plate (29) is provided on one side of the discharge end of the feed chute (28), and the loading thickness of the material on the track-mounted loading vehicle (22) can be controlled by controlling the speed of the track-mounted loading vehicle (22) and / or the distance between the lower end surface of the gate plate (29) and the track-mounted loading vehicle (22).

4. The track kiln type material drying equipment according to claim 1, characterized in that: The rail kiln material drying equipment also includes: a powder receiving chute (26), which is arranged at the bottom of the rail loading vehicle (22) and is used to collect material powder generated during the material drying process; the powder collected by the powder receiving chute (26) enters the hot air generating device (9) to burn and generate high-temperature flue gas; the ambient air input by the variable frequency air distribution fan (11) and the high-temperature flue gas output by the hot air generating device (9) are mixed to form the hot air; the hot air temperature can be adjusted by adjusting the air volume of the ambient air introduced by the variable frequency air distribution fan (11) and the mixing mode of the high-temperature flue gas output by the hot air generating device (9); wherein the air outlet pipeline of the hot air generating device (9) is provided with a cyclone dust removal device (5) and an environmental protection device (10) for purifying the high-temperature flue gas.

5. The track kiln type material drying equipment according to claim 4, characterized in that: The drying kiln body (1) is provided with three temperature zones, namely a low-temperature drying zone (2), a medium-temperature drying zone (3) and a high-temperature drying zone (4); during the drying process, the rail-type loading vehicle (22) passes through the low-temperature drying zone (2), the medium-temperature drying zone (3) and the high-temperature drying zone (4) in sequence; wherein each of the temperature zones is provided with a variable frequency air distribution fan (11) and a spare fan.

6. The track kiln type material drying equipment according to claim 4, characterized in that: The rail-type loader (22) is provided with a sieve plate (23) at the bottom, and the drying kiln body (1) is provided with a powder receiving chute (26) which is wider than the loader; wherein, when the rail-type loader (22) travels along the loader's travel track (25), the sieve plate (23) is located above the powder receiving chute (26), and the material powder generated during the drying process can pass through the sieve plate (23) into the powder receiving chute (26).

7. The track kiln type material drying equipment according to claim 4, characterized in that: The air outlet (27) of the drying kiln body (1) is provided with a cyclone dust removal device (5) and a bag dust removal device (6).

8. The track kiln type material drying equipment according to claim 1, characterized in that: The rail kiln material drying equipment also includes a PLC intelligent centralized control system, which consists of a temperature and humidity detection module, a temperature control module and a speed control module; the temperature and humidity detection module is arranged in the drying kiln body (1) and is used to detect the temperature and humidity in real time during the drying process; the temperature control module is used to control the air volume delivered by the variable frequency air distribution fan (11); the speed control module is used to control the travel speed of the rail loading vehicle (22); the temperature and humidity detection module is electrically connected to the temperature control module and the speed control module.

9. A material drying method, characterized in that: The material drying method uses the track kiln material drying equipment according to any one of claims 1 to 8, and the material drying method comprises the following steps: The rail-type loading vehicle (22) is loaded with materials of target loading thickness and driven into the drying kiln body (1); A hot air generating device (9) is outside the drying kiln body (1) to provide hot air that penetrates a material layer of the target loading thickness, thereby drying the material layer.

10. The material drying method according to claim 9, characterized in that: Also includes: When the rail-type loader (22) travels in the drying kiln body (1), the material powder enters the material powder collecting tank (8) through the sieve plate (23) and the powder receiving chute (26) at the bottom of the rail-type loader (22); the waste gas generated during the drying process is discharged from the chimney (7) after being dedusted by the cyclone dust removal device (5) and the bag dust removal device (6), and the material powder in the cyclone dust removal device (5) and the bag dust removal device (6) enters the material powder collecting tank (8); wherein, the material powder collected in the material powder collecting tank (8) during the material drying process can enter the hot air generating device (9) for combustion to obtain hot air for drying the material.

Images