Drying equipment

Abstract

The drying equipment comprises a transport vehicle, a box body, a drying part and a conveying device, the drying part and the conveying device are arranged in the box body, and the box body is arranged on the transport vehicle and provided with a feeding port and a discharging port; the conveying device comprises at least two conveying layers which are arranged at intervals in the height direction, the conveying device is used for conveying materials to sequentially pass through all the conveying layers, the conveying device is communicated with the feeding port and the discharging port, and the drying part comprises a heating part used for heating all the conveying layers; a detection device used for detecting the water content of materials is further arranged in the box body. The drying equipment is flexible, the cost is reduced, the utilization rate is improved, and the material drying requirements of small enterprises are met.

Description

Technical Field

[0001] This application relates to the technical field of drying equipment, and particularly relates to a drying equipment. Background Art

[0002] Cold-pressed pellets not only make full and reasonable use of existing waste secondary resources, but also can reduce environmental pollution and alleviate the large demand of blast furnaces for high-quality lumpy iron ores, having great economic and social benefits.

[0003] However, in the prior art, the pellet production process mainly adopts forms such as vertical drying, cylindrical drying or grate drying, etc. Cold-pressed pellets are produced by building production facilities in a fixed site, with poor flexibility. And for small and medium-sized enterprises, the production volume of cold-pressed pellets is small. If production facilities are built in a fixed site, the cost is high and the utilization rate is low.

[0004] Therefore, how to improve the flexibility of the drying equipment, reduce the cost and improve the utilization rate is a technical problem that needs to be urgently solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this application is to provide a drying equipment, which improves the flexibility of the drying equipment, reduces the cost and improves the utilization rate, meeting the material drying requirements of small enterprises.

[0006] To solve the above technical problems, this application provides a drying equipment, including a transport vehicle, a box body, a drying part and a conveying device arranged in the box body. The box body is arranged on the transport vehicle and is provided with a feed inlet and a discharge outlet; the conveying device includes at least two layers of conveying layers arranged at intervals in the height direction. The conveying device is used for conveying materials through each of the conveying layers in sequence. The conveying device is respectively communicated with the feed inlet and the discharge outlet. The drying part includes a heating part for heating each of the conveying layers; a detection device for detecting the water content of the materials is also arranged in the box body.

[0007] The conveying device includes at least two layers of conveying layers, and each conveying layer is arranged at intervals in the height direction. With such a setting, the overall length of the conveying device can be reduced, the overall length of the box body can be reduced, and within a limited length space, the drying time of the materials can be extended, ensuring the drying effect of the materials. At the same time, it is convenient for the transport vehicle to drive on the road. Since it can be moved by the transport vehicle, specifically, the trailer container form can be adopted to realize driving on the road, which can meet the use of multiple small enterprises, with good flexibility, high utilization rate and low cost.

[0008] This drying equipment can be moved to different enterprises, different factories, or different locations within the same factory by a transport vehicle. This drying equipment can be applied to an iron-smelting plant, covering the drying and solidification of iron ore concentrate raw materials and cold-pressed pellets. This drying equipment can directly dry iron ore raw materials to the qualified moisture content in the raw material yard area of the iron-smelting plant, and can also be used for the solidification drying of cold-pressed pellets. Moreover, this drying equipment can also be efficiently used in experiments at ore mining sites, etc., to meet the drying requirements of small batches of materials.

[0009] Optionally, it further includes a control unit, which is electrically connected to the detection device, the heating unit, and the conveying device, and can control the heating temperature of the heating unit and / or the conveying speed of the conveying device according to the detection results of the detection device.

[0010] Optionally, a monitoring device is further provided at the feed inlet, and the monitoring device is electrically connected to the control unit, and / or a iron removal device is further provided at the feed inlet.

[0011] Optionally, each of the conveying layers is respectively provided with an independent heating unit;

[0012] and / or, the conveying device further includes a driving member for driving the conveying layer to convey materials, and each of the conveying layers is respectively provided with an independent driving member.

[0013] Optionally, at least one detection device is respectively provided on each of the conveying layers.

[0014] Optionally, each of the conveying layers is independent of each other, and the end of the upper conveying layer is communicated with the front end of the lower conveying layer.

[0015] Optionally, the conveying device is a conveyor belt or an en-masse conveyor.

[0016] Optionally, it further includes a feeding device, and the feeding device includes a buffer part and a bucket elevator, and the bucket elevator is used to convey the materials in the buffer part to the feed inlet.

[0017] Optionally, it further includes a return material device, and a discharge port is further provided at the bottom of the box body; one end of the return material device is communicated with the discharge port, and the other end of the return material device is communicated with the feed inlet, and is used to convey the materials discharged from the discharge port to the feed inlet.

[0018] Optionally, the return material device is communicated with the buffer part.

[0019] Optionally, an air inlet is provided at the bottom of the box body, a blower is provided at the air inlet, an exhaust port is further provided at the top of the box body, and a dust removal device is further provided at the exhaust port.

[0020] Optionally, a heat insulation layer is further provided on the side wall of the box body. Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of the drying equipment provided by an embodiment of the present application;

[0022] Figure 2 is a schematic structural diagram of the drying equipment provided by an embodiment of the present application;

[0023] Figure 3 is a schematic structural diagram of the interior of the box body;

[0024] Figure 4 is a schematic structural diagram of the interior of the box body;

[0025] Figure 5 is a schematic structural diagram of the tensioning part.

[0026] Appendix Figures 1 - 5 In the drawings, the reference numerals are described as follows:

[0027] 1 Transport vehicle;

[0028] 2 Box body, 21 Feed inlet, 22 Discharge outlet, 23 Discharge port, 24 Exhaust port;

[0029] 3 Conveying device, 31 Conveying layer, 32 First layer, 33 Second layer, 34 Third layer, 35 Conveying part, 36 Tensioning part, 361 Pushing member, 362 Spring, 363 Rolling member, 364 Rolling shaft, 37 Driving member;

[0030] 4 Detection device;

[0031] 5 Iron removal device;

[0032] 6 Monitoring device;

[0033] 7 Returning device;

[0034] 8 Dust removal device;

[0035] 9 Feeding device, 91 Buffer part, 92 Hopper elevator;

[0036] 10 Fan;

[0037] 11 Material transfer device. Detailed Embodiments

[0038] In order to enable those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0039] An embodiment of the present application provides a drying equipment, as Figure 1As shown in the figure, the drying equipment includes a transport vehicle 1, a box body 2, a drying section and a conveying device 3 disposed inside the box body 2. Among them, the box body 2 is disposed on the transport vehicle 1, and the drying equipment can be moved to the required position through the transport vehicle 1, with good flexibility.

[0040] Specifically, the box body 2 is provided with a feed inlet 21 and a discharge outlet 22. The conveying device 3 includes at least two conveying layers 31 arranged at intervals in the height direction. The conveying device 3 is used to convey materials so that the materials pass through each conveying layer 31 in sequence.

[0041] The drying section includes a heating section (not shown in the figure) for heating each conveying layer 31. Specifically, each conveying layer 31 is heated by the heating section, and the materials conveyed by the conveying device 3 are heated and dried to ensure that the water content of the materials discharged from the discharge outlet 22 meets the preset requirements.

[0042] A detection device 4 is also provided inside the box body 2. The detection device 4 is used to detect the water content of the materials. Specifically, the number and position of the detection device 4 are not limited. For example, a detection device 4 is provided at the feed inlet 21 to detect the initial water content of the materials, and a detection device 4 is provided at the discharge outlet 22 to detect the water content of the materials after drying. Specifically, during actual use, the heating temperature of the heating section and the conveying speed of the conveying device 3 can be adjusted according to the initial water content of the materials to adjust the drying condition of the materials and ensure that the water content of the materials after heating meets the requirements.

[0043] The drying equipment further includes a control section, which is electrically connected to each detection device 4, the heating section and the conveying device 3 respectively. Specifically, wireless connection can be achieved through Bluetooth, WiFi, etc., or connection can also be made through a connecting wire. The control section can obtain the detection results of the detection device 4, and by adjusting the heating temperature of the heating section or the conveying speed of the conveying device 3, ensure that the water content of the materials discharged from the discharge outlet 22 meets the requirements, with high automation and more accurate control.

[0044] The conveying device 3 includes at least two conveying layers 31, and each conveying layer 31 is arranged at intervals in the height direction. With such an arrangement, the overall length of the conveying device 3 can be reduced, the overall length of the box body 2 can be reduced, and within a limited length space, the drying time of the materials can be extended, ensuring the drying effect of the materials. At the same time, it is convenient to realize the road driving of the transport vehicle 1. Since it can be moved through the transport vehicle 1, specifically, a trailer container form can be adopted to realize road driving, which can meet the use of multiple small enterprises, with good flexibility, high utilization rate and low cost.

[0045] This drying equipment can be moved to different enterprises, different factories, or different locations within the same factory by a transport vehicle 1. This drying equipment can be applied to ironmaking plants, covering the drying and solidification of iron ore concentrate raw materials and cold-pressed pellets. This drying equipment can directly dry iron ore raw materials to the qualified moisture content in the raw material yard area of the ironmaking plant, and at the same time can be used for the solidification drying of cold-pressed pellets. Moreover, this drying equipment can also be efficiently used in experiments at ore mining sites, etc., to meet the drying requirements of small batches of materials.

[0046] The drying equipment provided in this embodiment can be used to dry different materials, such as cold-pressed pellets, iron ore concentrate (lump ore), iron ore concentrate powder, etc. Among them, the initial moisture content of cold-pressed pellets is 5.5%, and the final moisture content after drying is 0.5% - 1%. The initial moisture content of iron ore concentrate or iron ore concentrate powder is about below 9.5%, and the final moisture content after drying is below 5%. Or, it can also be used to dry food. This embodiment does not limit the conveying equipment. The conveying device 3 can be a belt conveyor, a mesh belt conveyor, or an enclosed scraper conveyor, etc., and can be specifically set according to the actual materials. For example, when the materials are relatively large particles such as cold-pressed pellets and iron ore concentrate, a belt conveyor or a mesh belt conveyor can be used. When the materials are relatively fine particles such as iron ore concentrate powder, an enclosed scraper conveyor can be used.

[0047] The conveying device 3 conveys the materials along Figure 3 and Figure 4 the direction shown by the arrow in, moving in a serpentine movement path, and during the movement, it can be dried by the drying section. The number of layers of the conveying layer 31 can be designed according to the actual drying requirements and the overall length, etc., and no specific limitation is made here.

[0048] Specifically, it can be as shown in Figure 3 , where each conveying layer 31 is arranged in parallel along the horizontal direction. And, among two adjacent conveying layers 31, the front end of the lower conveying layer 31 extends out of the end of the upper conveying layer 31 (specifically referring to the end of the conveying layer 31 facing the downstream side), so that the materials at the end of the upper conveying layer 31 fall to the lower conveying layer 31 under the action of gravity. Or, it can also be as shown in Figure 4 , where each conveying layer 31 is inclined respectively, and the inclination directions of two adjacent conveying layers 31 are opposite. Similarly, among two adjacent conveying layers 31, the front end of the lower conveying layer 31 extends out of the end of the upper conveying layer 31, so that the materials at the end of the upper conveying layer 31 fall to the lower conveying layer 31 under the action of gravity.

[0049] Each conveying layer 31 conveys materials through the corresponding conveying part 35 respectively. In the two adjacent conveying layers 31, the front end of the lower conveying layer 31 extends beyond the end of the upper conveying layer 31. In this way, the structural and power requirements of the conveying device 3 can be simplified.

[0050] In this embodiment, there is no limitation on the specific structure of the conveying part 35. For example, it can be a conveyor belt, an en-masse conveyor, etc. Or, the conveying part 35 can also be set as a conveying channel with a cylindrical or trough-shaped structure. The conveying part 35 is inclined so that the materials on the upper double conveying layer 31 can be conveyed along the conveying channel to the lower conveying layer 31 under the action of gravity.

[0051] Such as Figure 2 As shown, the conveying device 3 is also provided with a tensioning part 36 for providing a tensioning force to the conveying part 35 to ensure that the conveyor belt, en-masse conveyor, etc. of the conveying part 35 are kept in a tensioned state, thereby ensuring the overall stable operation of the equipment.

[0052] Specifically, in this embodiment, there is no limitation on the specific structure of the tensioning part 36. For example, the tensioning part 36 can be set to include a pushing member 361, an elastic member 362, a rolling member 363 and a rolling shaft 364. Among them, the pushing member 361 is relatively fixed to the side wall of the box body 2 and pushes the rolling shaft 364 to move through the elastic member 362. The rolling member 363 can rotate around the rolling shaft 364. The rolling member 363 can abut against the conveying part 35 from the inner circle. And when the conveying part 36 is working, it can drive the rolling member 363 to rotate around the rolling shaft 364, providing a buffering effect through the elastic member 362. While ensuring the tensioning effect, it can avoid the situation that the conveying part 35 is damaged due to too large a thrust. There is no limitation on the specific structure of the rolling member 363. For example, Figure 5 As shown, the rolling member 363 can be matched with the conveying part 35 through a tooth structure to ensure the matching stability between the tensioning part 36 and the conveying part 35. The pushing member 361 can achieve the pushing effect through thread matching.

[0053] In this embodiment, each conveying layer 31 can also be set to be independent of each other. And the end of the upper conveying layer 31 is communicated with the front end of the lower conveying layer 31 through a circulation port, and the other positions are not communicated. Specifically, the internal space of the box body 2 can be divided into multiple independent cavities along the height direction through partitions, etc., and then each cavity forms a conveying layer 31 respectively. Or, by setting a cover body, the cover body covers above the conveying part 35 and encloses to form an independent space. Only a circulation port for the flow of materials and gas is provided at one end between two adjacent conveying layers 31. With such a setting, the heated gas can flow through each conveying layer 31 in sequence along the length direction, extending the circulation time of the gas in the box body 2, improving the heat utilization efficiency, and reducing heat waste. The gas flow direction is opposite to the material flow direction, enhancing the drying effect.

[0054] A feed hopper 11 is provided at the feed inlet 21. The material to be dried outside can be continuously fed into the box body 2 through the feed hopper 11 for drying, ensuring the drying efficiency of the material. Further, a weighing device can also be provided at the feed inlet 21 for obtaining the material processing amount. Specifically, the specific structure and installation position of the weighing device are not limited in this embodiment. For example, it can be set at the feed hopper 11, and the feed hopper 11 is set to include a feed part and a storage part. The feed part is connected between the storage part and the feed inlet 21. Moreover, a first valve is provided at the feed end of the feed part, and a second valve is provided at the discharge end of the feed part. The external material continuously enters the storage part. After the storage part weighs the material, the first valve opens, and the material can be conveyed to the feed part. The second valve opens, and the material is fed into the box body 2 from the feed part at a preset flow rate to the conveying device 3. During the feeding process, the second valve remains open, and the first valve opens intermittently. The weighing device, the first valve, and the second valve are respectively electrically connected to the control part and can be controlled by the control part, which is relatively convenient to operate.

[0055] Or, as Figure 2 shown, the drying equipment further includes a feeding device 9. The feeding device 9 includes a buffer part 91 and a hopper elevator 92. Among them, the hopper elevator 92 is arranged between the buffer part 91 and the feed inlet 21. The buffer part 91 can buffer the material, and then the hopper elevator 92 can feed the material in the buffer part 91 into the feed inlet 21 according to the preset speed requirement to facilitate the adjustment of the speed and flow rate of the material fed into the box body 1. The buffer part 91 can be provided with a weighing device to weigh the material according to needs.

[0056] In this embodiment, the heating parts of each conveying layer 31 can be an integrated heating structure. That is to say, the temperatures of the heating parts of each conveying layer 31 are the same, and the temperatures of the heating parts of each conveying layer 31 can be controlled by the same control part to ensure the drying condition of the material. With such a setting, the overall structure and control can be simplified.

[0057] Or, in this embodiment, the heating parts of each conveying layer 31 can also be independent of each other. That is to say, each conveying layer 31 is respectively provided with a heating part, and the control of each heating part is independent of each other. Each heating part is electrically connected to the control part, and the control part can separately control the corresponding heating part according to the heating requirements of each conveying layer 31. With such a setting, the drying flexibility can be better.

[0058] Specifically, for a certain material, after the initial water content and the required final water content are determined, the speed of the conveying device 3 and the heating temperature of the heating part can be determined according to the length of the conveying device 3. The set water content of the material at any position can be determined through experiments or calculations. If there is a deviation between the result detected by the detection device 4 provided here and the set water content, the speed of the conveying device 3 or the heating temperature of the heating part can be adjusted to ensure that the water content of the material finally discharged from the discharge port 22 meets the requirements.

[0059] The conveying device 3 further includes a driving member 37. The driving member 37 is used to drive the conveying layer 31 to move the material and is electrically connected to the control part. The control part can control the driving member 37 to drive the conveying layer 31 to convey the material. Specifically, the conveying device 3 can drive each of the conveying layers 31 to convey the material through the same driving member 37, or, as Figure 2 shown, each conveying layer 31 is respectively provided with a driving member 37, and each driving member 37 is independent of each other. The control part can adjust the material speed of each conveying layer 31 through each driving member 37 to accurately adjust the drying time of the material on each conveying layer 31 and further improve the drying flexibility.

[0060] In this embodiment, at least one detection device 4 is respectively provided on each conveying layer 31 for detecting the water content of the material on the conveying layer 31. Taking the conveying device 3 including three conveying layers 31 as an example, as Figure 3 and Figure 4 shown, these three conveying layers 31 are respectively the first layer 32, the second layer 33 and the third layer 34 arranged in sequence from top to bottom. Detection devices 4 are respectively arranged at the end of each layer. According to the requirements of the initial water content and the final water content and the length of the conveying device 3, the preset speed of each conveying layer (31) and the preset heating temperature of the heating part are determined, so that the set water content of the material after drying through the first layer 32 is 10%, and the set water content of the material after passing through the second layer 33 is 6.5%.

[0061] In reality, the water content detected by the detection device 4 at the end of the first layer 32 is 11%. This detection result is greater than the set water content of 10%. Then, the control part needs to adjust the heating part of the second layer 33 to increase the heating temperature on the basis of the preset heating temperature, or the control part adjusts the driving member 37 of the second layer 33 to reduce the material moving speed on the basis of the preset speed to improve the drying ability of the second layer 33. If the water content detected by the detection device 4 at the end of the second layer 33 is 6.5%, which is the same as the set water content, the heating part of the third layer 34 can be heated according to the preset heating temperature and the driving member 37 can convey the material at the preset speed.

[0062] Of course, a moisture detection device 4 can be provided at the end of the conveying layer 31, or the detection device 4 can be provided at any position in the middle of the conveying layer 31. Moreover, the number of detection devices 4 provided on each conveying layer 31 can be the same or different, and no specific limitation is made here.

[0063] In addition, each conveying layer 31 can also be divided into at least two segments along its length direction. Each segment is heated by a heating unit respectively, and a detection device 4 is provided at the end of each segment. That is to say, the same conveying layer 31 can be heated by at least two heating units. Specifically, the heating conditions of each heating unit can be controlled according to the detection results of the detection device 4 at the end of each segment, which has better flexibility.

[0064] When each conveying layer 31 is heated by a heating unit and a detection device 4 is provided at the end of each layer, while ensuring the flexibility of the heating adjustment of the heating unit, the overall structure can be simplified and the cost can be reduced.

[0065] In this embodiment, no specific limitation is made on the specific structure of the heating unit. For example, the heating unit can adopt electric heating, fuel (such as natural gas, hydrogen, etc.) heating, or a combination of electric heating and fuel heating. Specifically, it can be set according to the actual situation. The heating unit can heat the material in the form of hot air, or heat the material from the bottom, side, etc. of the conveying layer 31. When the heating unit heats the materials of different conveying layers 31 in the form of hot air respectively, the conveying device 3 further includes a cover body corresponding to each heating unit respectively, so that the heating areas of each heating unit are independent of each other.

[0066] The conveying device 3 can be set according to the material to be dried. For example, when the material to be dried is cold-pressed pellets, the conveying device 3 can adopt a conveyor belt. If the material to be dried is powder (such as iron powder, etc.) and the particles are relatively fine, a scraper conveyor device 3 can be adopted at this time to ensure the stability of the material during transportation between adjacent two conveying layers 31.

[0067] Such as Figure 1 As shown, a de-ironing device 5 is further provided at the feed inlet 21. The de-ironing device 5 can adopt a magnetic component to adsorb the iron parts mixed in the material, avoid the influence of the iron parts on the drying equipment, and at the same time avoid the influence on the outside when the iron parts are discharged to the external equipment along the discharge outlet 22. Specifically, the magnetic component can be a permanent magnet or an electromagnet, and no specific limitation is made here.

[0068] Such as Figure 1 and Figure 2As shown, the drying equipment further includes a monitoring device 6, which includes a camera and is used to monitor the feeding situation at the feeding port 21 to avoid problems such as blockage. The monitoring device 6 is electrically connected to the control unit and can transmit the images, video information, etc. collected by the camera to the control unit, facilitating the operator to monitor the feeding situation.

[0069] As Figure 1 and Figure 2 shown, the drying equipment further includes a return material device 7. A discharge port 23 is also provided at the bottom of the box body 2. One end of the return material device 7 is communicated with the discharge port 23, and the other end of the return material device 7 is communicated with the feeding port 21. During the process of the conveying device 3 conveying materials, it is inevitable that some materials will fall to the bottom of the box body 2. This part of the materials can be discharged along the discharge port 23 and conveyed to the feeding port 21 along the return material device 7 to participate in drying again, avoiding material waste. At the same time, it can also avoid affecting the operation of the drying equipment due to more materials accumulating at the bottom of the box body 2.

[0070] In this embodiment, the return material device 7 is directly communicated with the buffer part 91. That is to say, the materials discharged from the discharge port 23 are directly returned to the storage part 91 and enter the feeding port 21 together with the new materials under the action of the hopper elevator 92. With such a setting, compared with the scheme of separately setting a return material device 7 to introduce the materials discharged from the discharge port 23 into the feeding port 21, it can significantly simplify the overall structure.

[0071] Specifically, the return material device 7 can work periodically to return materials or continuously return materials. A scraper is also provided at the bottom of the box body 2, which is used to scrape the materials falling on the bottom of the box body 2 to the discharge port 23, facilitating the realization of returning materials.

[0072] As Figure 1 and Figure 2 shown, an air inlet is also provided at the bottom of the box body 2. A blower 10 is provided at the air inlet to supply air into the box body 2. An exhaust port 24 is also provided at the top of the box body 2 for exhausting air and discharging the water vapor generated during the drying process of the materials. A dust removal device 8 is also provided at the exhaust port 24 to remove dust from the discharged gas to achieve gas-solid separation and avoid environmental pollution. The specific specifications of the dust removal device 8 can be determined according to the local solid particle emission standards.

[0073] Specifically, the dust removal device 8 is preferably a bag filter, which can collect dust while removing dust from the exhaust gas. Or, the dust removal device 8 can also be a cyclone dust collector, which is located directly above the exhaust port 24, and the dust directly falls into the box body 2 and is collected. When the materials are cold-pressed pellets, iron ore concentrate or iron ore concentrate, the dust removal ash collected by the dust removal device 8 can also be heated in the pelletizing and sintering production systems of the steel plant according to needs to avoid waste of resources.

[0074] The dust removal device 8 can also be electrically connected to the control unit, which can obtain information such as the pressure of the dust removal device 8 and determine whether the dust removal device 8 is working properly.

[0075] In this embodiment, a heating layer can also be wrapped outside the dust removal device 8 for heating the dust removal device 8 to ensure the temperature inside the dust removal device 8, so as to prevent water vapor from entering the dust removal device 8 and condensing into water droplets, which affects the dust removal effect. At the same time, it can also avoid the phenomenon of white smoke when the gas is discharged into the atmosphere, and has good environmental protection effect. Specifically, the heating layer can heat the dust removal device 8 through electric heating or a heat exchanger.

[0076] A heat preservation layer is also provided on the side wall of the box body 2 to ensure the heat preservation effect of the box body 2, and further ensure the drying effect inside the box body 2. In this embodiment, the heat preservation layer can be made of rock wool board, etc. There is no limit to the material of the heat preservation layer, and it can be specifically set according to the material drying temperature requirements.

[0077] As Figure 1 and Figure 2 shown, the drying equipment further includes a material transfer device 11. One end of the material transfer device 11 is communicated with the discharge port 22 of the box body 2 and is used for transferring the dried material to external equipment. Specifically, there is no limit to the specific structure of the material transfer device 11 in this embodiment.

[0078] Furthermore, the angle between the material transfer device 11 and the outer wall of the box body 2 is variable. As Figure 2 shown, in the non-use state, the position of the material transfer device 11 is as shown at A in the figure, fitting with the outer wall of the box body 2, and the angle between them reaches the minimum, which can reduce the overall length of the drying equipment. In the use state, that is, when the material is transferred to external equipment through the material transfer device 11, the angle between the material transfer device 11 and the outer wall of the box body 2 can be increased according to the requirements of external equipment. At this time, the position of the material transfer device 11 is as shown at B in the figure, which is convenient for cooperating with external equipment to realize the material transfer operation. Specifically, the material transfer device 11 can change the angle with the outer wall of the box body 2 by rotating, folding, etc. There is no specific limit on how to rotate and how to fold here.

[0079] The above are only the preferred embodiments of the present application. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A drying device, characterized in that, it includes a transport vehicle (1), a box body (2), and a drying part and a conveying device (3) arranged in the box body (2). The box body (2) is arranged on the transport vehicle (1) and is provided with a feed inlet (21) and a discharge outlet (22); the conveying device (3) includes at least two conveying layers (31) arranged at intervals in the height direction. The conveying device (3) is used for conveying materials through each of the conveying layers (31) in sequence. The conveying device (3) is respectively communicated with the feed inlet (21) and the discharge outlet (22). The drying part includes a heating part for heating each of the conveying layers (31); a detection device (4) for detecting the water content of the material is further arranged in the box body (2).

2. The drying device according to claim 1, characterized in that, it further includes a control part. The control part is electrically connected to the detection device (4), the heating part and the conveying device (3), and can control the heating temperature of the heating part and / or control the conveying speed of the conveying device (3) according to the detection result of the detection device (4).

3. The drying device according to claim 2, characterized in that, a monitoring device (6) is further arranged at the feed inlet (21). The monitoring device (6) is electrically connected to the control part, and / or, a de-ironing device (5) is further arranged at the feed inlet (21).

4. The drying device according to claim 1, characterized in that, each of the conveying layers (31) is respectively provided with an independent heating part; and / or, the conveying device (3) further includes a driving part (37) for driving the conveying layer (31) to convey materials. Each of the conveying layers (31) is respectively provided with an independent driving part (37).

5. The drying device according to claim 4, characterized in that, each of the conveying layers (31) is respectively provided with at least one detection device (4).

6. The drying device according to claim 1, characterized in that, each of the conveying layers (31) is independent of each other, and the end of the conveying layer (31) located above is communicated with the front end of the conveying layer (31) located below.

7. The drying device according to claim 1, characterized in that, the conveying device (3) is a conveyor belt or an en-masse conveyor (3).

8. The drying device according to any one of claims 1-7, characterized in that, it further includes a feeding device (9). The feeding device (9) includes a buffer part (91) and a bucket elevator (92). The bucket elevator (92) is used for conveying the materials in the buffer part (91) to the feed inlet (21).

9. The drying device according to claim 8, characterized in that, it further includes a return material device (7). A discharge port (23) is further arranged at the bottom of the box body (2); one end of the return material device (7) is communicated with the discharge port (23), and the other end of the return material device (7) is communicated with the feed inlet (21) and is used for conveying the materials discharged from the discharge port (23) to the feed inlet (21).

10. The drying device according to claim 8, It is characterized in that the material return device (7) communicates with the buffer part (91).

11. The drying equipment according to any one of claims 1-7, It is characterized in that an air inlet is provided at the bottom of the box body (2), a fan (10) is provided at the air inlet, an exhaust port (24) is further provided at the top of the box body (2), and a dust removal device (8) is further provided at the exhaust port (24).

12. The drying equipment according to any one of claims 1-7, It is characterized in that a heat preservation layer is further provided on the side wall of the box body (2).

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