Wet meal drying and cooling machine

Abstract

The utility model relates to a wet meal drying and cooling machine, which comprises a machine barrel, a drying component and a cooling component, a feed port and a discharge port are respectively formed from the top and the bottom of the machine barrel, the drying component and the cooling component are respectively arranged in the machine barrel, a drying area and a cooling area which are communicated up and down are formed in the machine barrel, and the drying area comprises a plurality of heating layers which are sequentially communicated up and down. Materials are conveyed downwards layer by layer from the feeding port and flatly laid on the heating layers. The cooling area comprises a plurality of cooling layers which are sequentially communicated from top to bottom, and materials are downwards conveyed layer by layer from the drying area and flatly laid on the cooling layers. On one hand, materials are conveyed layer by layer from top to bottom and flatly laid in the heating layers and the cooling layers, it is ensured that the materials are heated and cooled under uniform distribution, and the drying and cooling effects of the materials are effectively improved; on the other hand, the bellows is adopted to heat and cool the materials on each layer, and the bellows can be cleaned and maintained by opening the corresponding layer, so that the operation is simple and convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical manufacturing, and in particular relates to a wet meal drying and cooling machine. Background Art

[0002] In the vegetable oil extraction plant, the wet meal coming out of the extractor generally contains about 30% solvent and a certain amount of water. The solvent in the wet meal needs to be evaporated, condensed and recovered for reuse, which is the most reasonable in terms of economy and environmental protection, and can ensure the safety of the meal storage and transportation process. In the conventional desolventizing process, the desolventizer used for wet meal desolventizing uses a higher temperature to desolventize the wet meal to obtain qualified meal, so that the residual solvent content in the meal reaches the corresponding quality index.

[0003] After the solvent in the wet meal is removed, the meal must be further processed to make the moisture and temperature of the meal reach the "safe moisture" and "safe temperature" conditions to keep the quality of the meal stable. Otherwise, the finished meal will quickly deteriorate under the action of moisture and temperature, thus losing the value of the finished meal. The so-called safe moisture is generally below 12%, and the temperature is generally between 35 and 40°C, which is conducive to the storage of the meal. This is because when the moisture content of the meal increases, the microbial community will grow rapidly, some small animals will reproduce, causing the meal to heat up, causing the organic components in the meal to be oxidized, resulting in the deterioration and corruption of the meal, and ultimately losing its use value. Therefore, in order to prevent undesirable phenomena in the meal, the temperature and moisture should be kept within the "safe" range during production and before storage.

[0004] At present, the traditional drying and cooling machines for wet meal are mainly layered or vertical, which have a hot air layer and a cold air layer, wherein a plurality of jet holes capable of spraying hot air are arranged on the bottom plate of the hot air layer, and when the material falls on the hot air layer, it is in contact with the hot air for heating to reduce moisture; a plurality of jet holes capable of spraying cold air are arranged on the bottom plate of the cold air layer, and when the material falls on the cold air layer, it is in contact with the cold air for cooling.

[0005] However, in the actual production process, the prior art has the following defects:

[0006] 1. Each layer generally uses a stirring paddle to stir the material and transfer it to the next layer from the discharge port on the bottom plate. However, during continuous stirring, the material is prone to accumulation, resulting in uneven distribution of the material, affecting the heating or heat dissipation of some materials, and affecting the drying and cooling effects;

[0007] 2. There are a large number of jet holes on the bottom plates of the hot air layer and the cold air layer, which are easy to be blocked. It is often necessary to manually dredge them deep inside the equipment, that is, use a thin iron needle to dredge the jet holes one by one. The workload of maintenance is very large. If the material enters the interlayer of the bottom plate, it is very difficult to clean it. Utility Model Content

[0008] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an improved wet meal drying and cooling machine.

[0009] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0010] A wet meal drying and cooling machine comprises a barrel with a feed inlet and a discharge outlet formed from the top and the bottom respectively, and a drying component and a cooling component respectively arranged in the barrel, wherein a drying zone and a cooling zone connected up and down are formed in the barrel, the drying zone comprises a plurality of heating layers connected up and down in sequence, the material is transmitted layer by layer from the feed inlet downward and spread on each heating layer, wherein at least one side of each heating layer can be opened or closed; the drying component comprises a plurality of hot air boxes correspondingly arranged in each heating layer and used for spraying hot air to the material in the corresponding layer; the cooling zone comprises a plurality of cooling layers connected up and down in sequence, the material is transmitted layer by layer from the drying zone downward and spread on each cooling layer, wherein at least one side of each cooling layer can be opened or closed; the cooling component comprises a plurality of cold air boxes correspondingly arranged in each cooling layer and used for spraying cold air to the material in the corresponding layer.

[0011] According to a specific implementation and preferred aspect of the utility model, each heating layer and cooling layer is arranged to extend in the horizontal direction; and a cover that is arranged one by one with each heating layer and cooling layer and can be opened or closed is formed on the side wall of the barrel. Here, the structure is simple and easy to assemble and implement.

[0012] Preferably, each heating layer and cooling layer is provided with a cover on opposite sides, so that the staff can open the cover from any side to clean and repair the cold air box or the hot air box, and both sides can be opened at the same time to clean and repair.

[0013] According to another specific implementation and preferred aspect of the utility model, each heating layer and cooling layer is respectively provided with a layer plate, wherein each layer plate is formed with a material discharge channel which passes through from top to bottom, and the material is transmitted along each layer plate layer by layer from top to bottom and falls on the adjacent layer plate through the corresponding material discharge channel.

[0014] Preferably, there are multiple unloading channels on each layer plate and they are spaced apart along the material transmission direction. Each layer plate is connected to multiple hot air boxes or multiple cold air boxes, and multiple unloading channels are staggered with multiple hot air boxes or multiple cold air boxes; and / or, a rotary unloading valve is provided in each unloading channel. Here, when unloading, it is beneficial for the material to be evenly dispersed and fall on the lower layer plate, so that the material can be evenly heated or cooled to avoid dead corners; at the same time, a rotary unloading valve is used, and a material monitoring sensor is set on each layer, so that the unloading of each layer of material can be accurately controlled according to the actual amount of material on each layer.

[0015] Preferably, multiple layer plates are aligned vertically; and / or, guide plates extending upward and downward in an inclined manner are provided on opposite sides of each layer plate, wherein the lower end of each guide plate is located directly above the layer plate below; here, considering that some materials are not discharged through the discharge channel, under the drive of the pushing component, the materials can pass through the edge of the layer plate and fall onto the lower layer plate along the guide plate to avoid material accumulation.

[0016] Preferably, air holes are formed on each layer plate, and the hot air box and the cold air box are respectively connected to the bottom surface of the corresponding layer plate and communicate with the air holes, and the hot air or the cold air contacts the material through the air holes.

[0017] According to another specific implementation and preferred aspect of the utility model, the drying and cooling machine further includes a pushing component for driving the material to flip along the upper surface of each layer, wherein the movement directions of each two adjacent layers are arranged in opposite directions. Here, the material is flipped from top to bottom in a circuitous manner, which is conducive to further improving the uniformity of the distribution of the material on each layer.

[0018] Preferably, the material pushing component includes an annular transmission chain arranged above the corresponding layer plate, and a power member for driving the annular transmission chain, wherein the annular transmission chain drives the material on the corresponding layer plate to turn over in an annular motion. Here, the structure is simple, and the use and maintenance costs are low; at the same time, the annular transmission chain is used to turn over the materials on each layer, and the required equipment working power is low, which greatly reduces energy consumption and reduces the use cost.

[0019] According to another specific implementation and preferred aspect of the utility model, the drying and cooling machine further comprises a material-forming component correspondingly arranged above each layer plate and located on the material movement path, wherein the material-forming component comprises a plurality of material-forming modules spaced apart along the material movement direction, and a material-forming area is formed between the lower end of each material-forming module and the upper surface of the corresponding layer plate, and the height of the material-forming area is gradually reduced along the material movement direction. Here, the flatness of each material layer is ensured to achieve uniform paving.

[0020] In addition, the drying and cooling machine also includes an auxiliary feeding plate horizontally arranged between the feed port and the drying area, wherein the material falls downward from the feed port onto the auxiliary feeding plate, the material is gradually spread on the surface of the auxiliary feeding plate and is transmitted toward the drying area; the width of the auxiliary feeding plate in the direction of material movement is smaller than the width of the layer plate. Here, the material is initially distributed through the auxiliary feeding plate so as to accurately control the amount of material falling to the top layer plate.

[0021] Due to the implementation of the above technical solution, the utility model has the following advantages compared with the prior art:

[0022] In the existing wet meal drying and cooling machine, each layer generally adopts a stirring paddle to stir the material and transfer it from the discharge port on the bottom plate of the layer to the next layer. However, the material is prone to accumulation during continuous stirring, resulting in uneven distribution of the material, affecting the heating or heat dissipation of some materials, affecting the drying and cooling effects, and there are a large number of jet holes on the bottom plates of the hot air layer and the cold air layer, which are easy to be blocked. It is often necessary to manually dredge the inside of the equipment, that is, to use a thin iron needle to dredge the jet holes one by one. The workload of maintenance is very large. If the material enters the interlayer of the bottom plate, it is very difficult to clean it. The present application reorganizes the structure of the wet meal drying and cooling machine. The design of the machine body cleverly solves the shortcomings and defects of the prior art. After adopting the drying and cooling machine, the material enters the barrel through the top feed port. First, the material is transmitted layer by layer from top to bottom and spread on each heating layer, and each hot air box blows hot air to the corresponding layer of the material for heating and drying; then the material continues to be transmitted layer by layer from the drying area downward and spread on each cooling layer, and each cold air box blows cold air to the corresponding layer of the material for cooling; finally, the dried and cooled material is discharged from the cooling area downward and from the bottom discharge port; in addition, when cleaning, open the corresponding heating layer or cooling layer, and directly clean the hot air box or cold air box. Therefore, compared with the prior art, the utility model, on the one hand, ensures that the material is heated and cooled under uniform distribution by transmitting the material layer by layer from top to bottom and spreading it on each heating layer and cooling layer, effectively improving the drying and cooling effect of the material; on the other hand, the bellows are used to heat and cool the materials in each layer, and the bellows can be cleaned and maintained by opening the corresponding layer, which is simple and convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a half-section structural schematic diagram of the wet meal drying and cooling machine of the utility model;

[0024] Figure 2 for Figure 1 Schematic diagram of the local structure;

[0025] Figure 3 for Figure 1 Schematic diagram from left side;

[0026] Figure 4 for Figure 2 A schematic diagram of the structure enlargement in the middle;

[0027] Among them: 1, barrel; 10, feed port; 11, discharge port; 12, capping; q 1, drying area; q 10, heating layer; q2, cooling area; q20, cooling layer; b, layer plate; k, air hole; t, unloading channel; f, rotary unloading valve; b0, guide plate;

[0028] 2. Drying parts; 20. Hot air box;

[0029] 3. Cooling components; 30. Cold air box;

[0030] 4. Auxiliary feeding plate;

[0031] 5. Pushing parts; 50. Ring transmission chain; 51. Power parts;

[0032] 6. Monolithic components; 60. Monolithic modules; q3. Monolithic areas. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, a detailed description is given below in conjunction with specific embodiments and drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0038] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0039] like Figures 1 to 4 As shown, the wet meal drying and cooling machine of this embodiment includes a barrel 1, a drying component 2 and a cooling component 3 respectively arranged in the barrel.

[0040] Specifically, the barrel 1 is a square barrel, which has a feed port 10 and a discharge port 11 formed at the top and bottom respectively, and a drying zone q1 and a cooling zone q2 connected up and down are formed in the barrel 1, wherein the drying zone q1 includes a plurality of heating layers q10 connected in sequence up and down, and the material is transmitted layer by layer from the feed port downward and spread on each heating layer q10, wherein at least one side of each heating layer q10 can be opened or closed; the cooling zone q2 includes a plurality of cooling layers q20 connected in sequence up and down, and the material is transmitted layer by layer from the drying zone q1 downward and spread on each cooling layer q20, wherein at least one side of each cooling layer q20 can be opened or closed. The drying component 2 includes a plurality of hot air boxes 20 correspondingly arranged in each heating layer q10 and used to spray hot air to the materials in the corresponding layer; the cooling component 3 includes a plurality of cold air boxes 30 correspondingly arranged in each cooling layer q20 and used to spray cold air to the materials in the corresponding layer, wherein both the hot air boxes 20 and the cold air boxes 30 are square boxes connected to an external air source. The main structure of the equipment is square, and compared with the circular structure of the original product, the manufacturing process is simpler and more convenient.

[0041] For the convenience of implementation, each heating layer q10 and cooling layer q20 is extended in the horizontal direction; a cover 12 is formed on the side wall of the barrel 1, which is arranged one-to-one with each heating layer q10 and cooling layer q20 and can be opened or closed; a cover 12 is respectively arranged on the opposite sides of each heating layer q10 and cooling layer q20.

[0042] At the same time, each heating layer q10 and cooling layer q20 is respectively provided with a layer plate b, wherein each layer plate b is formed with a material discharge channel t which runs through from top to bottom, and the material is transmitted along each layer plate b layer by layer from top to bottom and falls on the adjacent layer plate b through the corresponding material discharge channel t; each layer plate b is correspondingly connected with a plurality of hot air boxes 20 or a plurality of cold air boxes 30, and the plurality of material discharge channels t are staggeredly distributed with the plurality of hot air boxes 20 or the plurality of cold air boxes 30.

[0043] In some specific embodiments, there are multiple unloading channels t on each layer plate b and they are spaced apart along the material transmission direction; a rotary unloading valve f is provided in each unloading channel t, and a material monitoring sensor is provided on each layer, so that the unloading of materials in each layer can be accurately controlled according to the actual material quantity in each layer; multiple layer plates b are arranged in an aligned manner up and down; guide plates b0 extending up and down in an inclined manner are also provided on the opposite sides of each layer plate b, wherein the lower end of each guide plate b0 is located directly above the lower layer plate b; air holes k are formed on each layer plate b, and the hot air box 20 and the cold air box 30 are respectively connected to the bottom surface of the corresponding layer plate b from the top and are connected to the air holes k, and the hot air or cold air passes upward through the air holes k to contact the material.

[0044] To further facilitate implementation, the drying and cooling machine also includes an auxiliary feeding plate 4 horizontally arranged between the feed port 10 and the drying area q1, wherein the material falls downward from the feed port 10 onto the auxiliary feeding plate 4, and the material is gradually spread on the surface of the auxiliary feeding plate 4 and transmitted toward the drying area q1; the width of the auxiliary feeding plate 4 in the direction of material movement is smaller than the width of the lower layers b.

[0045] The drying and cooling machine of this embodiment further comprises a pushing member 5 for driving the material to flip along the upper surface of each layer plate b, wherein the movement directions of every two adjacent layer plates b are arranged in opposite directions.

[0046] In some specific embodiments, the pusher 5 includes an annular transmission chain 50 disposed above the corresponding layer plate b, and a power member 51 for driving the annular transmission chain 50, wherein the annular transmission chain 50 drives the material on the corresponding layer plate b to turn over in an annular motion. Similarly, the pusher 5 of the above structure drives the material to turn over along the upper surface of the auxiliary feed plate 4 to fall on the lower layer plate b. Taking the DTDC degassing machine of the 5000t / d leaching workshop as an example, a single main shaft is used to drive the stirring paddle to stir the material in the entire barrel cavity, and the motor power is 720Kw. However, the pusher of the drying and cooling machine of the present application has a total motor power of 152kw, which is only 21% of the existing products, and the power saving effect is obvious.

[0047] In addition, the drying and cooling machine also includes a material-forming component 6 which is correspondingly arranged above each layer plate b and located on the material movement path, wherein the material-forming component 6 includes a plurality of material-forming modules 60 which are spaced apart along the material movement direction, and a material-forming area q3 is formed between the lower end of each material-forming module 60 and the upper surface of the corresponding layer plate b, and the height of the material-forming area q3 is gradually reduced along the material movement direction.

[0048] In summary, after adopting the drying and cooling machine, the material enters the barrel through the feed port at the top, first, the material is transmitted layer by layer from top to bottom and spread on each heating layer, and each hot air box blows hot air to the material in the corresponding layer to heat and dry it; then the material continues to be transmitted downward from the drying area layer by layer and spread on each cooling layer, and each cold air box blows cold air to the material in the corresponding layer to cool it down; finally, the material that has completed drying and cooling moves downward from the cooling area and is discharged from the bottom discharge port; in addition, when cleaning, open the corresponding heating layer or cooling layer, and directly clean the hot air box or cold air box. Therefore, compared with the prior art, the present invention, on the one hand, ensures that the material is heated and cooled under uniform distribution by transferring the material from top to bottom layer by layer and laying it flat in each heating layer and cooling layer, thereby effectively improving the drying and cooling effect of the material; on the other hand, a bellows is used to heat and cool the material in each layer, and the bellows can be cleaned and maintained by opening the corresponding layer, which is simple and convenient to operate; thirdly, it is convenient for the staff to open the cover from either side to clean and repair the cold air box or the hot air box, and both sides can be opened at the same time for cleaning and maintenance operations; fourthly, when unloading, it is conducive to the uniform dispersion of the material on the lower layer plate, so that the material is evenly heated or cooled and dead corners are avoided; at the same time, a rotary unloading valve is adopted, and Material monitoring sensors are set on each layer, so that the unloading of materials on each layer can be accurately controlled according to the actual material quantity on each layer; fifthly, considering that some materials have not been discharged through the discharge channel, driven by the pushing component, the materials can pass through the edge of the layer plate and fall onto the lower layer plate along the guide plate to avoid material accumulation; sixthly, the materials are turned over in a roundabout way from top to bottom, which is conducive to further improving the uniformity of material distribution on each layer; seventhly, the structure is simple and the use and maintenance costs are low; at the same time, a ring transmission chain is used to turn the materials on each layer, and the required equipment has low working power, which greatly reduces energy consumption and reduces the use cost; eighthly, the materials are preliminarily distributed through the auxiliary feeding plate to accurately control the amount of materials falling to the top layer plate.

[0049] The above detailed description of the utility model is intended to enable people familiar with the technology in this field to understand the content of the utility model and implement it. It does not limit the protection scope of the utility model. The utility model is not limited to the above-mentioned embodiments. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A wet meal drying and cooling machine, comprising a barrel with a feed inlet and a discharge outlet formed at the top and bottom, respectively, and a drying component and a cooling component respectively arranged in the barrel, wherein a drying zone and a cooling zone connected up and down are formed in the barrel, characterized in that: The drying area comprises a plurality of heating layers connected in sequence from top to bottom, the material is transmitted layer by layer from the feed port downward and laid flat on each heating layer, wherein at least one side of each heating layer can be opened or closed; the drying component comprises a plurality of hot air boxes correspondingly arranged in each heating layer and used for spraying hot air to the material in the corresponding layer; The cooling zone includes multiple cooling layers which are connected in sequence from top to bottom, and the material is transferred layer by layer from the drying zone downward and spread on each cooling layer, wherein at least one side of each cooling layer can be opened or closed; the cooling component includes multiple cold air boxes which are correspondingly arranged in each cooling layer and used to spray cold air to the material in the corresponding layer.

2. The wet meal drying and cooling machine according to claim 1, characterized in that: Each of the heating layers and cooling layers is extended in a horizontal direction; a cover which is arranged one-to-one with each of the heating layers and cooling layers and can be opened or closed is formed on the side wall of the barrel.

3. The wet meal drying and cooling machine according to claim 2, characterized in that: A sealing cover is respectively arranged on opposite sides of each heating layer and cooling layer.

4. The wet meal drying and cooling machine according to claim 1, characterized in that: Each of the heating layer and the cooling layer is respectively provided with a layer plate, wherein each of the layer plates is formed with a material discharge channel which passes through from top to bottom, and the material is transmitted layer by layer along each of the layer plates from top to bottom and falls on the adjacent layer plates through the corresponding material discharge channel.

5. The wet meal drying and cooling machine according to claim 4, characterized in that: There are multiple unloading channels on each layer plate and they are spaced apart along the material transmission direction. Each layer plate is connected to multiple hot air boxes or multiple cold air boxes, and the multiple unloading channels are staggered with the multiple hot air boxes or multiple cold air boxes; and / or, a rotary unloading valve is provided in each unloading channel.

6. The wet meal drying and cooling machine according to claim 4, characterized in that: Multiple layer plates are aligned up and down; and / or, guide plates extending up and down in an inclined manner are provided on opposite sides of each layer plate, wherein the lower end of each guide plate is located directly above the layer plate below; and / or, air holes are formed on each layer plate, and the hot air box and the cold air box are respectively connected to the bottom surfaces of the corresponding layer plates and communicated with the air holes, and the hot air or cold air contacts the material through the air holes.

7. The wet meal drying and cooling machine according to claim 4, characterized in that: The drying and cooling machine also includes a pushing component for driving the material to flip along the upper surface of each layer plate, wherein the movement directions of each two adjacent layer plates are arranged in opposite directions.

8. The wet meal drying and cooling machine according to claim 7, characterized in that: The material pushing component comprises an annular transmission chain arranged above the corresponding layer plate and a power member for driving the annular transmission chain, wherein the annular transmission chain drives the material on the corresponding layer plate to turn over in an annular motion.

9. The wet meal drying and cooling machine according to claim 4, characterized in that: The drying and cooling machine also includes a material-forming component correspondingly arranged above each of the layer plates and located on the material movement path, wherein the material-forming component includes a plurality of material-forming modules spaced apart along the material movement direction, and a material-forming area is formed between the lower end of each of the material-forming modules and the upper surface of the corresponding layer plate, and the height of the material-forming area is gradually reduced along the material movement direction.

10. The wet meal drying and cooling machine according to claim 4, characterized in that: The drying and cooling machine also includes an auxiliary feeding plate horizontally arranged between the feed port and the drying area, wherein the material falls downward from the feed port onto the auxiliary feeding plate, and the material is gradually spread on the surface of the auxiliary feeding plate and transmitted toward the drying area; the width of the auxiliary feeding plate in the direction of material movement is smaller than the width of the layer plate.

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