Expanded material drying equipment

Abstract

The utility model relates to expanded material drying equipment which comprises a drying oven. A refining unit; and a drying unit. On one hand, on the basis that the bottom plate is provided with the multiple drying areas and the multiple discharging areas, falling materials are dispersed in the compartments through the dispersing parts, drying and discharging are conducted in the drying areas and the discharging areas respectively along with movement of the compartments, damage to the materials is effectively reduced, the material quality is improved, meanwhile, the falling materials are evenly dispersed, and the drying efficiency is improved. The material drying effect can be improved; on the other hand, the materials are dispersed, dried and unloaded layer by layer from top to bottom, the drying efficiency is high, material retention can be effectively avoided, and in addition, the equipment is compact in structure, small in size and convenient to transport and install.

Description

Technical Field

[0001] The utility model belongs to the technical field of drying, and in particular relates to an expanded material drying device. Background Art

[0002] During pre-treatment or pre-pressing of oilseeds, puffing may be necessary. Oilseed puffing is the process of converting oilseeds into porous, expanded materials using extrusion equipment. Prior to puffing, the oilseeds are typically crushed and rolled. Examples include soybean green pellet puffing and leaching processes and rice bran puffing and leaching processes, which are widely used in oil extraction. Before puffing the green oilseeds, the moisture and temperature of the oilseeds must be regulated. During puffing, the oilseeds undergo a high-pressure, wet-heat treatment. The resulting puffed material has a relatively high temperature and moisture content, making it soft and brittle. Therefore, the puffed material should be dried and cooled, and its temperature and moisture adjusted to meet the requirements of subsequent processes.

[0003] At present, in the oil pretreatment and pre-pressing process, a flat plate dryer is generally used to dry the oil. The flat plate dryer is a rectangular structure with multiple layers of flat plates with steam sleeves arranged in an overlapping manner. The material enters from the top and falls on the flat plate to be heated by indirect steam. At the same time, there is a scraper chain mechanism on the flat plate to push the material forward, and it falls at the tail end of the flat plate and falls into the next layer of flat plate. In this way, it passes through each layer of flat plate in turn. Under the heating of indirect steam, the moisture in the material evaporates and is discharged through the air outlet at the top of the flat plate dryer, and the material is finally discharged from the bottom outlet. In addition, an airflow drying conveyor can also be used to dry the oil. The airflow drying conveyor is equivalent to a scraper conveyor that can let in hot air. The hot air enters from the bottom, passes through the material layer, and is discharged from the exhaust port at the top.

[0004] However, in the actual production process, the existing technology has the following defects:

[0005] 1. The scraper chain used in the flat dryer needs to push the material repeatedly, which can easily cause uneven distribution and accumulation of the material, affecting the drying effect. In addition, the material can be easily crushed during the pushing process, resulting in increased powder content and reduced material quality.

[0006] 2. When using an airflow drying conveyor, the material needs to be dried during long-distance transportation. Not only is the drying efficiency low, but the material will be locally retained, resulting in excessive heat causing scorching or even combustion. At the same time, the equipment is large in size and not easy to install and transport. Utility Model Content

[0007] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an improved expanded material drying device.

[0008] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0009] A puffed material drying device, comprising:

[0010] The oven has a feed inlet and a discharge outlet at the top and bottom respectively;

[0011] The material distribution unit is arranged in the oven and includes a plurality of bottom plates spaced apart from each other, and a dispersing component corresponding to each bottom plate, wherein the bottom plate is formed with a plurality of drying zones spaced apart along the left-right direction, and a discharge zone disposed between each two adjacent drying zones and used to discharge the material downward; the dispersing component has a plurality of compartments laid flat on the corresponding bottom plates and moving synchronously in the left-right direction, and the material is dispersed from top to bottom into each compartment, and as the compartments move, it passes through the corresponding drying zone and discharge zone in sequence and falls downward onto the adjacent bottom plate;

[0012] The drying unit is used to deliver drying gas into the oven, wherein the drying gas passes through each drying zone in turn and dries the corresponding materials.

[0013] According to a specific embodiment and preferred aspect of the present invention, an air outlet is formed at the top of the oven and an air inlet is formed at the bottom. Drying gas is directed upward from the air inlet through each drying zone and then discharged from the air outlet. The drying gas is air. The heat of the material itself (the material temperature upon entering the oven is approximately 80-100°C) is utilized. The air contacts the material layer by layer from bottom to top for heat exchange, removing moisture from the material and discharging it through the top air outlet. This achieves a drying effect while utilizing the material's own waste heat, effectively reducing energy consumption and saving costs.

[0014] Preferably, the oven includes a box body and a discharge barrel arranged at the bottom of the box body, wherein the top of the box body forms a feed port and an air outlet, the discharge barrel is a cone that gradually narrows from top to bottom, and the bottom of the discharge barrel forms a discharge port and the side wall forms an air inlet.

[0015] Preferably, there are two discharge barrels, arranged side by side. Two streams of drying gas enter the discharge barrels horizontally from two air inlets, and the two streams of drying gas flow in opposite directions and intersect in the area between the two discharge barrels. This prevents the drying gas from interfering with the discharge of the material.

[0016] Preferably, the box body includes a first box body, a second box body, and a third box body, arranged in sequence above and below. The multi-layered bottom plate is distributed within the first and third boxes. The sidewalls of the second box body bulge inward to form a diversion slope connecting the first and third boxes. The upper end of the diversion slope is separated from the side edge of the bottom plate of the first box body to form a discharge port, and the lower end is located near the upper surface of the bottom plate of the third box body. In this manner, if some material fails to pass through the discharge port during movement, it can still be discharged through the discharge port and along the diversion slope onto the bottom plate below under the push of the compartment, preventing accumulation and achieving high reliability.

[0017] According to another specific embodiment and preferred aspect of the present invention, the materials on two adjacent bottom plates are arranged in opposite directions of movement. Here, the materials form a reciprocating motion from top to bottom, which improves the turning effect of the materials and is conducive to improving the drying effect.

[0018] Preferably, the dispersing component includes multiple partitions and driving members spaced apart along the left and right directions, and a compartment is formed between each two adjacent partitions; each two adjacent bottom plates are divided into a material mixing group, and the driving member drives the multiple partitions to reciprocate between the upper and lower bottom plates in a material mixing group.

[0019] Specifically, the drive element is a ring-shaped transmission chain, with multiple baffles fixedly mounted on the ring-shaped transmission chain and performing circular reciprocating motion. The ring-shaped transmission chain includes an upper chain body and a lower chain body connected at their ends. In a material-splitting group, the upper chain body is positioned near the upper surface of the upper base plate, and the lower chain body is positioned near the lower surface of the lower base plate. The spacing between the upper and lower chains and the corresponding upper surface of the base plate is sufficient to allow the baffles to push the material.

[0020] According to another specific embodiment and preferred aspect of the present invention, multiple unloading areas in the upper and lower adjacent bottom plates are staggered, and materials are unloaded from the upper unloading area and fall into the corresponding drying area below. In this way, the materials are ensured to fall into the drying area layer by layer from top to bottom.

[0021] Preferably, a plurality of unloading holes spaced apart along the front-to-back direction are provided in the unloading area, wherein each unloading hole is a rectangular hole and extends along the front-to-back direction; a unloading channel extending downward from the edge of each unloading hole is also formed on the bottom plate.

[0022] In addition, the drying equipment also includes an auxiliary feeding unit arranged between the feed port and the material leveling unit, the auxiliary feeding unit includes an auxiliary base plate extending left and right, and a scraping chain for scraping the material off the auxiliary base plate; and / or, there are two feed ports and they are arranged at intervals on the left and right.

[0023] Due to the implementation of the above technical solution, the utility model has the following advantages compared with the prior art:

[0024] The scraper chain used in the flat dryer of the prior art needs to push the material repeatedly, which easily leads to uneven distribution and accumulation of the material, affecting the drying effect. In addition, the material is easily crushed during the pushing process, resulting in increased powder content and reduced material quality. When an airflow drying conveyor is used, the material needs to be dried during long-distance transportation, which not only has low drying efficiency, but also causes local retention of the material, resulting in excessive heating and causing burning or even combustion. At the same time, the equipment is large and not easy to install and transport. The present application designs the structure of the expanded material drying equipment as a whole, cleverly solving the shortcomings and defects of the prior art. After adopting the drying equipment, the material is fed downward from the feed port at the top of the oven. As the multiple compartments move left and right synchronously, the material is evenly dispersed in each compartment and moves synchronously with the compartments. After the dispersed material is dried in the corresponding drying area, the material is discharged downward through the adjacent discharge area and falls on the bottom plate of the next layer. The above steps are repeated to achieve layer-by-layer dispersion, drying and discharge of the material from top to bottom, and finally the material is discharged from the discharge port at the top. Therefore, compared with the prior art, the present invention, on the one hand, is based on the arrangement of multiple drying areas and unloading areas on the bottom plate, and disperses the falling materials in each compartment through the dispersion components, and realizes drying and unloading in each drying area and unloading area respectively as the compartments move, effectively reducing damage to the materials, improving the quality of the materials, and achieving uniform dispersion of the falling materials, which is beneficial to improving the drying effect of the materials; on the other hand, the materials are dispersed, dried and unloaded layer by layer from top to bottom, with high drying efficiency, and can effectively avoid material retention. In addition, the equipment has a compact structure and a small size, which is convenient for transportation and installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural diagram of the expanded material drying equipment of the present utility model;

[0026] Figure 2 for Figure 1 Schematic diagram of the midsole plate from top view;

[0027] Figure 3 for Figure 1 A magnified schematic diagram of the structure at position Ⅰ in the middle;

[0028] Wherein: A, oven; A0, oven body; A01, first box; A02, second box; m, guide slope; A03, third box; k0, feed inlet; k1, air outlet; A1, discharge barrel; k2, discharge port; k3, air inlet;

[0029] B, material distribution unit; 1, bottom plate; q1, drying area; k4, air hole; q2, unloading area; k5, unloading hole; k6, unloading port; t, unloading channel; 2, dispersion component; 20, partition; g, compartment; 21, driving member; 210, upper chain body; 211, lower chain body;

[0030] C, auxiliary feeding unit; C0, auxiliary base plate; C1, scraper chain. DETAILED DESCRIPTION

[0031] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, a detailed description is provided below in conjunction with specific embodiments and accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0032] 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 to 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0034] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0035] In the utility model, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0036] 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 an intermediate 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 an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0037] like Figures 1 to 3 As shown, the expanded material drying equipment of this embodiment includes an oven A, a material mixing unit B, a drying unit, and an auxiliary feeding unit C.

[0038] Specifically, the oven A includes a box body A0 in the shape of a rectangular parallelepiped and a discharge barrel A1 arranged at the bottom of the box body A0, wherein a feed port k0 and an air outlet k1 are formed at the top of the box body A0, and there are two feed ports k0 and they are spaced side by side on the left and right, and the air outlet k1 can be one or more and they are arranged between the two feed ports k0; the discharge barrel A1 is a cone that gradually narrows from top to bottom, and a discharge port k2 is formed at the bottom of the discharge barrel A1 and an air inlet k3 is formed on the side wall; there are two discharge barrels A1 and they are arranged side by side on the left and right, wherein the conical surfaces of the two discharge barrels A1 intersect to form an overlapping area, and two streams of drying gas enter the two discharge barrels A1 horizontally from the two air inlets k3 respectively, and the horizontal flow directions of the two drying gases are opposite and intersect in the overlapping area between the two discharge barrels A1.

[0039] In this example, the material mixing unit B is arranged in the drying oven A, and includes multiple layers of horizontal bottom plates 1 spaced apart in the upper and lower directions, and a dispersing component 2 correspondingly arranged on each layer of the bottom plate 1, wherein the bottom plate 1 is formed with multiple drying areas q 1 spaced apart along the left and right directions, and a unloading area q2 arranged between each adjacent drying area q 1 and used to unload the material downward; the dispersing component 2 has multiple compartments g that are flattened on the corresponding bottom plate 1 and move synchronously in the left and right directions. The material is dispersed from top to bottom and falls into each compartment g, and as the compartment g moves, it passes through the corresponding drying area q 1 and the unloading area q2 in turn and falls downward onto the adjacent bottom plate 1.

[0040] In some specific embodiments, multiple unloading areas q2 in adjacent bottom plates 1 are staggered in the upper and lower directions, that is, the material is discharged downward through any unloading area q2 and falls into the corresponding drying area q1 in the bottom plate 1 below; the bottom plate 1 is provided with multiple air holes k4 for the passage of drying gas located in each drying area q1 and unloading holes k5 located in each unloading area q2, wherein the air holes k4 are all circular holes for the passage of drying gas, and the aperture is smaller than the diameter of the material particles; each unloading hole k5 is a rectangular hole and extends along the front-to-back direction, wherein each unloading area q2 has multiple unloading holes k5, and they are spaced apart along the front-to-back direction.

[0041] In order to further improve the drying effect, in each unloading area q2, the area between two adjacent unloading holes k5 is provided with air holes k4; and a unloading channel t extending downward from the edge of each unloading hole k5 is also formed on the bottom plate 1.

[0042] At the same time, in order to facilitate blanking, the box body A0 includes a first box body A01, a second box body A02 and a third box body A03 arranged in sequence from top to bottom, wherein the multi-layer bottom plate 1 is distributed in the first box body A01 and the third box body A03, and the side wall of the second box body A02 protrudes inward to form a guide slope m connecting the first box body A01 and the third box body A03, and the upper end of the guide slope m is separated from the side of the bottom plate located in the first box body A01 to form a discharge port k6, and the lower end is arranged close to the upper surface of the bottom plate located in the third box body A03.

[0043] In some specific embodiments, the dispersing component 2 includes multiple partitions 20 and a drive member 21 spaced apart along the left-right direction. A compartment g is formed between each pair of adjacent partitions 20. Each pair of adjacent bottom plates 1 is divided into a material-splitting group. The drive member 21 drives the multiple partitions 20 to reciprocate between the upper and lower bottom plates 1 within a material-splitting group. In other words, the material on adjacent bottom plates 1 moves in opposite directions. In this embodiment, there are two material-splitting groups, one located in the first box A01 and the other in the third box A03.

[0044] Specifically, the drive member 21 is an annular transmission chain, with multiple baffles 20 fixedly mounted on the annular transmission chain and capable of annular reciprocating motion. The annular transmission chain comprises an upper chain body 210 and a lower chain body 211 connected at their ends. In a material leveling group, the upper chain body 210 is positioned near the upper surface of the upper base plate 1, while the lower chain body 211 is positioned near the upper surface of the lower base plate 1. The spacing between the upper and lower chains and the upper surface of the corresponding base plate is sufficient to ensure that the baffles can propel the material.

[0045] In this example, the drying unit is used to deliver drying gas into the oven A, wherein the drying gas passes through each drying zone q1 in sequence and dries the corresponding material.

[0046] In some specific embodiments, the drying unit can be any conventional air conveying device. That is, this embodiment uses air as the drying gas. The drying unit drives the drying gas into the oven A from the air inlet k3 and flows upward. After fully contacting and exchanging heat with the materials in each drying zone q1 layer by layer, the drying unit takes away the moisture in the materials and discharges them from the air outlet k1 at the top.

[0047] In addition, the auxiliary feeding unit C is arranged between the feed port k0 and the material leveling unit B. The auxiliary feeding unit C includes an auxiliary bottom plate C0 extending left and right, and a scraper chain C1 for scraping the material from the auxiliary bottom plate C0. There are two auxiliary bottom plates C0 and they are correspondingly arranged below the two feed ports k0. The material falls on the two auxiliary bottom plates C0 through the feed port k0. Under the movement of the scraper chain C1, the material passes through the space between the two auxiliary bottom plates C0 and the side edge of the auxiliary bottom plate C0 and falls on the bottom plate 1 below.

[0048] In summary, when an airflow drying conveyor is used, the material needs to be dried during long-distance transportation. Not only is the drying efficiency low, but the material will be locally retained, resulting in excessive heat causing scorching or even burning. At the same time, the equipment is large in size and not easy to install and transport. The present application designs the structure of the puffed material drying equipment as a whole, cleverly solving the deficiencies and defects of the existing technology. After adopting the drying equipment, the material is fed downward from the feed port at the top of the oven. As the multiple compartments move left and right synchronously, the material is evenly dispersed in each compartment and moves synchronously with the compartments. After the dispersed material is dried in the corresponding drying area, the material is discharged downward through the adjacent unloading area and falls on the bottom plate of the next layer. The above steps are repeated to achieve layer-by-layer dispersion, drying and unloading of the material from top to bottom, and finally the material is discharged from the discharge port at the top. Therefore, compared with the prior art, the present invention, on the one hand, is based on the arrangement of multiple drying areas and unloading areas on the bottom plate, and disperses the falling materials into each compartment through the dispersion component, and realizes drying and unloading in each drying area and unloading area respectively as the compartment moves, effectively reducing the damage to the material, improving the material quality, and achieving uniform dispersion of the falling materials, which is beneficial to improving the material drying effect; on the other hand, the material is dispersed, dried and unloaded layer by layer from top to bottom, with high drying efficiency, and can effectively avoid material retention, in addition, the equipment has a compact structure and a small size, which is easy to transport and install; thirdly, the heat of the material itself is utilized (the temperature of the material when entering the oven is about 80-10000℃). 100℃), the air contacts the material layer by layer from bottom to top for heat exchange, and takes out the moisture in the material and discharges it from the top air outlet, achieving the drying effect while utilizing the waste heat of the material itself, effectively reducing energy consumption and saving costs; fourthly, through the layout of the initial flow directions of the two drying gases, the drying gas is effectively avoided from interfering with the material discharge; fifthly, when some materials fail to pass through the discharge port during movement, they can still pass through the discharge port and discharge along the guide slope to the bottom plate below under the push of the compartment, preventing accumulation and high reliability; sixthly, the material forms a reciprocating motion from top to bottom, which improves the turning effect of the material and is beneficial to improving the drying effect.

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

Claims

1. A puffed material drying device, characterized in that: It includes: The oven has a feed inlet and a discharge outlet at the top and bottom respectively; A material distribution unit is provided in the oven and includes a plurality of bottom plates spaced apart in an upper and lower direction, and a dispersing component correspondingly provided on each bottom plate, wherein the bottom plate is formed with a plurality of drying zones spaced apart in a left-right direction, and a discharge zone provided between each two adjacent drying zones and used for discharging the material downward; the dispersing component has a plurality of compartments laid flat on the corresponding bottom plates and moving synchronously in the left-right direction, wherein the material is dispersed from top to bottom and falls into each of the compartments, and as the compartments move, the material passes through the corresponding drying zone and discharge zone in sequence and falls downward onto the adjacent bottom plate; The drying unit is used to deliver drying gas into the oven, wherein the drying gas passes through the drying zones of each layer in sequence and dries the corresponding materials.

2. The expanded material drying equipment according to claim 1, characterized in that: The oven is also provided with an air outlet at the top and an air inlet at the bottom. The drying gas passes upward from the air inlet through each of the drying zones and is then discharged from the air outlet. The drying gas is air.

3. The expanded material drying equipment according to claim 2, characterized in that: The oven includes a box body and a discharge barrel arranged at the bottom of the box body, wherein the top of the box body forms the feed port and the air outlet, the discharge barrel is in a tapered shape that gradually narrows from top to bottom, and the bottom of the discharge barrel forms the discharge port, and the air inlet is formed on the side wall.

4. The expanded material drying equipment according to claim 3, characterized in that: There are two discharge barrels arranged side by side on the left and right. Two streams of drying gas enter the discharge barrel horizontally from the two air inlets respectively. The horizontal flow directions of the two streams of drying gas are opposite and intersect in the area between the two discharge barrels.

5. The expanded material drying equipment according to claim 3, characterized in that: The box body includes a first box body, a second box body and a third box body arranged in sequence up and down, wherein the multi-layer bottom plate is distributed in the first box body and the third box body, the side wall of the second box body protrudes inward and forms a guide slope connecting the first box body and the third box body, and the upper end of the guide slope is separated from the side of the bottom plate located in the first box body to form a discharge port, and the lower end is arranged close to the upper surface of the bottom plate located in the third box body.

6. The expanded material drying equipment according to claim 1, characterized in that: The movement directions of the materials on the two adjacent bottom plates are opposite to each other.

7. The expanded material drying equipment according to claim 6, characterized in that: The dispersing component includes a plurality of partitions and a driving member spaced apart along the left and right directions, and a compartment is formed between every two adjacent partitions; every two adjacent bottom plates are divided into a material leveling group, and the driving member drives the plurality of partitions to reciprocate between the upper and lower bottom plates in a material leveling group.

8. The expanded material drying equipment according to claim 7, characterized in that: The driving member adopts an annular transmission chain, and the multiple partitions are fixedly arranged on the annular transmission chain and move back and forth in a circular manner; the annular transmission chain includes an upper chain body and a lower chain body connected from the end. In a material leveling group, the upper chain body is arranged near the upper surface of the base plate above, and the lower chain body is arranged near the upper surface of the base plate below.

9. The expanded material drying equipment according to claim 1, characterized in that: The multiple unloading areas in the upper and lower adjacent bottom plates are staggered and distributed up and down, and the material is unloaded from the unloading area located above and falls into the drying area below; and / or, the unloading area is provided with a plurality of unloading holes spaced apart along the front-to-back direction, wherein each of the unloading holes is a rectangular hole and extends along the front-to-back direction; a unloading channel extending downward from the edge of each unloading hole is also formed on the bottom plate.

10. The expanded material drying equipment according to claim 1, characterized in that: The drying equipment also includes an auxiliary feeding unit arranged between the feed port and the material leveling unit, the auxiliary feeding unit includes an auxiliary base plate extending left and right, and a scraping chain for scraping the material off the auxiliary base plate; and / or, there are two feed ports and they are spaced apart left and right.

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