A drying device for pretreatment of mixed coarse cereals

Abstract

The application discloses a drying device for mixed coarse grain raw material pretreatment, relates to the technical field of coarse grain drying devices, and solves the technical problem of large temperature difference between the just-entered coarse grain and hot air and uneven drying. The device comprises a drying roller, which is slightly inclined and installed on the top of a drying machine rack; a uniform drying mechanism installed on the drying roller, which comprises a plurality of air supply pipes embeddedly installed on the inner wall of the drying roller, an arc-shaped air guide pipe for supplying hot air to the inside of the drying roller, and a heating member sleeved on the right end of the drying roller for supplying hot air; the generated hot air can be uniformly supplied to each sieve plate, and the drying temperature of each sieve plate can be controlled according to the drying time of the coarse grain, so that the hot air drying of the coarse grain can be fully realized, the large temperature difference that affects the drying uniformity can be avoided, the time for heating the gas is prolonged, the gas heating is uniform, and the drying quality and efficiency of the coarse grain are improved.

Description

Technical Field

[0001] This invention belongs to the technical field of grain drying equipment, specifically a drying device for pretreatment of mixed grain raw materials. Background Technology

[0002] Before mixing grains, it is necessary to ensure the quality of the raw materials. Therefore, it is necessary to use a drying device to dry the grain raw materials. The core benefit of drying is to improve the quality and safety of the grains, reduce the risk of mold and bacterial growth, and thus ensure the safe storage and edible quality of the grains.

[0003] For example, a raw material drying and pretreatment device for processing miscellaneous grains, with announcement number CN118066812B, includes a frame. An inclined drying cylinder is rotatably installed on the top of the frame. A feeding box and a discharging box are fixedly installed on both sides of the frame, and both the discharging box and the feeding box are connected to the drying cylinder. A bent pipe is fixedly installed through the feeding box, and a fan is fixedly installed inside the bent pipe. The bent pipe is used to draw hot air heated by the discharging box into the drying cylinder to heat the miscellaneous grains inside.

[0004] In the aforementioned patent, external gas directly passes through the heating element, which may result in uneven heating of the hot air, potentially affecting the drying effect on the grains. Furthermore, there are no corresponding temperature control measures, and the freshly fed grains are directly dried by the hot air, which may lead to a large temperature difference and uneven drying. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art; to this end, the present invention proposes a drying device for pretreatment of mixed grain raw materials.

[0006] A drying device for pretreatment of mixed grain raw materials includes:

[0007] A drying drum, which is mounted at a slight inclination on top of the dryer frame;

[0008] A uniform drying mechanism installed on a drying drum includes multiple air supply pipes embedded in the inner wall of the drying drum, an arc-shaped air guide pipe for supplying hot air into the drying drum, and a heating component sleeved on the right end of the drying drum to provide hot air.

[0009] A collection component installed at the bottom of the drying drum to recover the shell fragments generated during the drying process.

[0010] Preferably, the heating component includes a hollow ring sleeved on the drying drum, with cover plates on both sides of the hollow ring, and multiple annular heating rods disposed inside the hollow ring. Two sets of guide groups are disposed on the surface of the annular cavity opened inside the hollow ring, with the two sets of guide groups located on the inner and outer sides of the annular heating rods respectively.

[0011] Preferably, the inner surface of the hollow ring is provided with a stabilizing plate to support and fix the annular heating rod, and the outer circumferential surface of the hollow ring is provided with a power supply box connected to the annular heating rod.

[0012] Preferably, a connecting pipe is provided on the side of the cover plate on the left side, the lower end of the connecting pipe extends to the inner wall of the drying drum and connects to the rightmost air supply pipe, a connecting pipe is provided between the air supply pipe and the arc-shaped air guide pipe, and multiple inclined nozzles are provided on the inner side of the arc-shaped air guide pipe.

[0013] Preferably, a temperature control adjustment component is embedded between two adjacent air supply pipes. The temperature control adjustment component includes an insulation cylinder installed between the two air supply pipes, and the air supply pipes and the insulation cylinder are connected internally.

[0014] Preferably, a spiral cooling plate is horizontally arranged inside the insulation cylinder, and a spiral guide plate located inside the spiral cooling plate is arranged at the center of the insulation cylinder.

[0015] Preferably, an air pump is provided on the side of the rightmost cover plate, and an air inlet pipe is provided between the air pump and the hollow ring.

[0016] Preferably, the collecting component includes a whole distribution pipe horizontally embedded in the bottom of the drying drum, a recycling ring located inside the drying drum is provided on the upper surface of the distribution pipe, a recycling box is provided at the bottom left end of the drying drum, and a recycling pipe is provided between the recycling box and the distribution pipe.

[0017] Preferably, a bucket-shaped cloth bag is provided on the inner side of the right end of the recycling bin, an exhaust pipe is provided on the left end of the recycling bin, a filter layer is provided at the inner end of the exhaust pipe, and a spiral retention plate is provided on the inner surface of the exhaust pipe.

[0018] Preferably, a discharge pipe is provided at the right end of the drying drum, the drying drum forms an acute angle with the horizontal direction, and the right end of the drying drum is lower than the left end.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] (1) The present invention can deliver the generated hot air evenly to each screen plate, and adjust the drying temperature of each screen plate according to the drying time of the grains. This can fully dry the grains with hot air without causing a large temperature difference that would affect the uniformity of drying. It also extends the time for the gas to be heated, making the gas heated evenly, thus improving the drying quality and efficiency of the grains.

[0021] (2) The present invention can regulate the temperature of hot air by designing a temperature control adjustment component, so as to keep the hot air at a suitable drying temperature for drying grains at each sieve plate, and there will be no large temperature difference between the grains and the hot air. Moreover, the temperature control is convenient and quick.

[0022] (3) The present invention can collect the broken shells generated during the drying process of miscellaneous grains by designing the collection component, and will not directly release them into the air, thereby improving the air quality around the drying of miscellaneous grains. Moreover, the collection process will not cause the broken shells to block the filter holes and interrupt the filtration of broken shells, thus ensuring the continuity of broken shell collection. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the grain drying device of the present invention;

[0024] Figure 2 For the present invention Figure 1 Cross-sectional view of the drying drum;

[0025] Figure 3 For the present invention Figure 2 A bottom view of the uniform drying mechanism;

[0026] Figure 4 For the present invention Figure 2 Exploded view of the heating component;

[0027] Figure 5 For the present invention Figure 3 Cross-sectional view of the temperature control and regulating component;

[0028] Figure 6 For the present invention Figure 5 Enlarged view of region A in the middle;

[0029] Figure 7 For the present invention Figure 3 A structural diagram of the components collected in the middle;

[0030] Figure 8 For the present invention Figure 7 The sectional views of the components are collected in the middle;

[0031] In the diagram: 100, Dryer frame; 101, Drying drum; 102, Discharge pipe; 200, Uniform drying mechanism; 201, Heating component; 2011, Hollow ring; 2012, Cover plate; 2013, Power supply box; 2014, Annular heating rod; 2015, Stabilizing plate; 2016, Guide assembly; 202, Air pump; 203, Arc-shaped air guide pipe; 204, Temperature control and adjustment component; 2041, Insulation cylinder. ; 2042, Spiral guide plate; 2043, Spiral refrigeration plate; 2044, Support plate; 205, Connecting pipe; 206, Air supply pipe; 207, Inclined nozzle; 208, Connecting pipe; 300, Collection component; 301, Recovery pipe; 302, Recovery box; 303, Exhaust pipe; 304, Distribution pipe; 305, Recovery ring; 306, Funnel-shaped filter bag; 307, Spiral retention plate; 308, Filter layer. Detailed Implementation

[0032] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example 1

[0034] Please refer to the figure - Figure 5 This application provides a drying apparatus for pretreatment of mixed grain raw materials, comprising:

[0035] The drying drum 101 is installed at a slight angle on the top of the dryer frame 100. The slight angle makes it easier for the grains inside the drying drum 101 to move from one end to the other. The left end of the drying drum 101 has a feeding port to facilitate the feeding of the grains.

[0036] The uniform drying mechanism 200 installed on the drying drum 101 can evenly deliver the generated hot air to each screen plate, and adjust the drying temperature of each screen plate according to the drying time of the grains. This can fully dry the grains with hot air without causing a large temperature difference that would affect the uniformity of drying. It also extends the heating time of the gas, making the gas heating more uniform, improving the drying quality and efficiency of the grains. The uniform drying mechanism 200 includes multiple air supply pipes 206 embedded in the inner wall of the drying drum 101, an arc-shaped air guide pipe 203 that supplies hot air into the drying drum 101, and a heating component 201 that provides hot air to the right end of the drying drum 101.

[0037] A collection component 300 installed at the bottom of the drying drum 101 is used to collect the broken shells generated during the drying process. The collection component 300 can absorb and collect the broken shells generated during the drying process of miscellaneous grains, and will not be directly discharged into the air, thereby improving the air quality around the drying of miscellaneous grains. Moreover, the broken shells will not clog the filter holes during the collection process, ensuring the continuity of broken shell collection.

[0038] In this embodiment, preferably, the heating component 201 includes a hollow ring 2011 sleeved on the drying drum 101. Cover plates 2012 are provided on both sides of the hollow ring 2011, and the two can be connected by screws for easy assembly and disassembly. Multiple annular heating rods 2014 are provided inside the hollow ring 2011. Two sets of guide groups 2016 are provided on the surface of the annular cavity inside the hollow ring 2011. Each guide group 2016 consists of multiple inclined plates distributed along the circumference of the annular cavity. Dispersion holes are also provided on the surface of the inclined plates. The inclined plates in the two sets of guide groups 2016 are staggered, so that the gas entering the hollow ring 2011 does not flow in a regular annular pattern, but is guided and dispersed by the inclined plates and dispersion plates, resulting in an irregular flow. The gas flows within the hollow ring 2011, extending the residence time of the gas within the hollow ring 2011, ensuring that the gas is fully heated and preventing uneven heating that could affect the drying quality of the grains. Two sets of guide groups 2016 are located on the inner and outer sides of the annular heating rod 2014, respectively. A stabilizing plate 2015 is provided on the inner surface of the hollow ring 2011 to support and fix the annular heating rod 2014. The stabilizing plate 2015 supports the annular heating rod 2014, and its surface has multiple through holes for gas to pass through, without affecting the flow of gas within the hollow ring 2011. An energy supply box 2013 connected to the annular heating rod 2014 is provided on the outer circumference of the hollow ring 2011 to facilitate the supply of energy to the annular heating rod 2014.

[0039] In this embodiment, preferably, a connecting pipe 205 is provided on the side of the cover plate 2012 on the left side. The lower end of the connecting pipe 205 extends to the inner wall of the drying drum 101 and connects to the rightmost air supply pipe 206. The air supply pipe 206 is embedded in the inner wall of the drying drum 101, so that the air supply pipe 206 and the connecting pipe 205 will not affect the rotation of the drying drum 101. A connecting pipe 208 is provided between the air supply pipe 206 and the arc-shaped air guide pipe 203. The arc-shaped air guide pipe 203 is located on the outside of the sieve plate. Multiple inclined nozzles 207 are provided on the inner side of the arc-shaped air guide pipe 203. The inclined nozzles 207 can fully apply the drying hot air to the grains on each sieve plate.

[0040] In summary, during use, the air pump 202 delivers outside air into the hollow ring 2011. The air pump 202 is located at the bottom of the hollow ring 2011, while the connecting pipe 205 is at the top of the hollow ring 2011. This facilitates the full internal flow and heating of the gas drawn into the hollow ring 2011. The gas flowing in the annular cavity is guided and dispersed by the inclined plate. The guided gas passes through the annular heating rod 2014 and is heated, ensuring that the gas is fully heated and preventing uneven heating. The heated gas then enters the air delivery pipe 206 through the connecting pipe 205 and is sprayed out from the arc-shaped air guide pipe 203 and the inclined nozzle 207, acting on the sieve plate to dry the grains on the sieve plate. The drying time of the grains on each sieve plate in the drying drum 101 is different. The temperature control adjustment component 204 can be used to regulate the hot air temperature of the grains on each sieve plate, ensuring that the grains come into contact with the appropriate temperature of hot air at different positions in the drying drum 101, preventing large temperature differences and increasing the stability and safety of grain drying.

[0041] Example 2

[0042] Reference Figure 5 and Figure 6 This is the second embodiment of the present invention.

[0043] In this embodiment, preferably, a temperature control adjustment component 204 is embedded between two adjacent air supply pipes 206. The temperature control adjustment component 204 can be used to regulate the temperature of the hot air, keeping it at a suitable drying temperature for drying the grains at each sieve plate, preventing over-drying of the grains and affecting the drying quality. Moreover, the temperature control is convenient and quick. The temperature control adjustment component 204 includes a heat preservation cylinder 2041 installed between the two air supply pipes 206, and the air supply pipes 206 and the heat preservation cylinder 2041 are connected to each other to facilitate the passage of hot air. A spiral cooling plate 2043 is horizontally arranged inside the heat preservation cylinder 2041, and a spiral guide plate 2042 is arranged at the center of the heat preservation cylinder 2041 inside the spiral cooling plate 2043. A support plate 2044 is arranged on the inner wall of the heat preservation cylinder 2041 to support the spiral guide plate 2042.

[0044] In summary, when the hot air entering the air supply pipe 206 does not require temperature control, it will be sprayed from the corresponding arc-shaped air guide pipe 203 and inclined nozzle 207 onto the grains. When the drying temperature of the grains needs to be controlled, each temperature control component 204 can work independently. It is possible to select whether the temperature control component 204 plays a certain role in cooling the hot air at each node. When the temperature control component 204 is working, multiple temperature control components 204 are used to cool the hot air step by step. The end away from the hollow ring 2011 is the grain feed end. The temperature of the grains at the discharge pipe 102 is the highest in the grain drying temperature range. However, if the grains are directly dried at high temperature as soon as they enter, it may cause temperature differences and uneven drying. Therefore, the temperature is controlled by the temperature control component 204 to minimize the temperature difference between the cooled hot air and the grains that have just entered. This preheats the grains and reduces temperature differences and uneven drying. As the grains move toward the discharge pipe 102, the temperature gradually rises, improving the drying effect. The whole process improves the uniformity and thoroughness of grain drying.

[0045] In this embodiment, preferably, an air pump 202 is provided on the side of the rightmost cover plate 2012, and an air inlet pipe is provided between the air pump 202 and the hollow ring 2011 to facilitate the delivery of outside air into the hollow ring 2011.

[0046] Example 3

[0047] Reference Figure 7 and Figure 8 This is the third embodiment of the present invention.

[0048] In this embodiment, preferably, the collecting component 300 includes a horizontally embedded distribution pipe 304 at the bottom of the drying drum 101. The collecting component 300 does not affect the rotation of the drying drum 101. A suction pump can be connected to the distribution pipe 304 to generate suction pressure, sending the suctioned gas into the recovery box 302 through the recovery pipe 301. A recovery ring 305 located inside the drying drum 101 is provided on the upper surface of the distribution pipe 304. A suction nozzle is provided on the surface of the recovery ring 305 to facilitate the extraction of gas from inside the drying drum 101. A recovery box 302 is provided at the bottom left end of the drying drum 101. The recovery box 302 is located between the distribution pipe 304 and the recovery pipe 302. A recovery pipe 301 is provided, and a funnel-shaped cloth bag 306 is provided on the inner side of the right end of the recovery box 302. An exhaust pipe 303 is provided on the left end of the recovery box 302. A filter layer 308 is provided at the inner end of the exhaust pipe 303. The filter layer 308 is a cloth layer, which can both filter and facilitate gas discharge. A spiral retention plate 307 is provided on the inner surface of the exhaust pipe 303, so that the gas acts on the spiral retention plate 307. Part of the gas flows outward along the spiral retention plate 307, and part of the gas is retained by the spiral shape at the left end of the spiral retention plate 307. Part of the retained gas will impact the filter layer 308 from the left side, causing the filter layer 308 to bulge inward.

[0049] In summary, during operation, the suction pump draws the gas inside the drying drum 101 outwards into the recovery box 302. The drawn-out gas carries some of the shell fragments generated during drying. The fragments and gas pass through the funnel-shaped cloth bag 306 and are sent into the recovery box 302. The gas carrying the fragments acts on the filter layer 308, where the fragments remain. The gas passes through the filter layer 308 and is discharged outwards. A portion of the discharged gas remains on the spiral retainer plate 307, where the spiral gas impacts the outside. The filter layer 308 is subjected to wind impact on its inner and outer sides. As it is a cloth layer, the filter layer 308 is constantly agitated, which not only continuously filters the shell fragments carried by the gas, but also prevents the shell fragments from adhering to the filter layer 308 and blocking it. This ensures continuous filtration of the shell fragments in the gas. After the recycling is completed, the funnel-shaped cloth bag 306 hangs down naturally. The bag opening is folded to prevent the shell fragments from being discharged. Then, the bottom of the recycling box 302 is opened to process the shell fragments.

[0050] In this embodiment, preferably, a discharge pipe 102 is provided at the right end of the drying drum 101, the drying drum 101 forms an acute angle with the horizontal direction, and the right end of the drying drum 101 is lower than the left end, so that the dried grains can be discharged from the discharge pipe 102. The dryer frame 100 is composed of multiple trusses welded longitudinally and transversely, so there is space at the upper end of the dryer frame 100, which does not affect the rotation of the recycling box 302.

[0051] Example 4

[0052] This embodiment is obtained by combining Embodiment 1, Embodiment 2 and Embodiment 3.

[0053] During use, the uniform drying mechanism 200 draws in and heats the outside air, and the temperature is adjusted step by step by the temperature control adjustment component 204 to reduce the temperature difference between the hot air and the grains, thereby increasing the uniformity of grain drying. The collection component 300 recovers the hot air inside the drying drum 101 and collects the broken shells mixed in the recovered hot air. The discharged hot air can be connected to the waste heat recovery system for recovery, thereby improving resource utilization.

[0054] The above embodiments are only used to illustrate the technical methods of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of the present invention without departing from the spirit and scope of the technical methods of the present invention.

Claims

1. A drying device for pretreatment of mixed grain raw materials, characterized in that, include: Drying drum (101), which is installed at a slight angle on top of the dryer frame (100); A uniform drying mechanism (200) is installed on the drying drum (101). The uniform drying mechanism (200) includes multiple air supply pipes (206) embedded in the inner wall of the drying drum (101), an arc-shaped air guide pipe (203) for supplying hot air into the drying drum (101), and a heating component (201) sleeved on the right end of the drying drum (101) to provide hot air. A collection component (300) installed at the bottom of the drying drum (101) to recover the shell fragments generated during the drying process. The heating component (201) includes a hollow ring (2011) sleeved on the drying drum (101), and cover plates (2012) are provided on both sides of the hollow ring (2011). Multiple annular heating rods (2014) are provided inside the hollow ring (2011). Two sets of guide groups (2016) are provided on the surface of the annular cavity opened inside the hollow ring (2011). The two sets of guide groups (2016) are located on the inner and outer sides of the annular heating rods (2014), respectively. A connecting pipe (205) is provided on the side of the cover plate (2012) on the left side. The lower end of the connecting pipe (205) extends to the inner wall of the drying drum (101) and connects to the air supply pipe (206) on the far right. A connecting pipe (208) is provided between the air supply pipe (206) and the arc-shaped air guide pipe (203). Multiple inclined nozzles (207) are provided on the inner side of the arc-shaped air guide pipe (203). A temperature control adjustment component (204) is embedded between two adjacent air supply pipes (206). The temperature control adjustment component (204) includes a heat insulation cylinder (2041) installed between the two air supply pipes (206), and the air supply pipes (206) and the heat insulation cylinder (2041) are connected internally. The insulation cylinder (2041) has a horizontally arranged spiral cooling plate (2043) inside, and a spiral guide plate (2042) located inside the spiral cooling plate (2043) is provided at the center of the insulation cylinder (2041).

2. The drying device for pretreatment of mixed grain raw materials according to claim 1, characterized in that, The hollow ring (2011) has a stabilizing plate (2015) on its inner surface to support and fix the annular heating rod (2014), and the hollow ring (2011) has an energy supply box (2013) connected to the annular heating rod (2014) on its outer circumference.

3. The drying device for pretreatment of mixed grain raw materials according to claim 2, characterized in that, An air pump (202) is provided on the side of the rightmost cover plate (2012), and an air inlet pipe is provided between the air pump (202) and the hollow ring (2011).

4. The drying device for pretreatment of mixed grain raw materials according to claim 1, characterized in that, The collecting component (300) includes a whole distribution pipe (304) horizontally embedded in the bottom of the drying drum (101). A recycling ring (305) located inside the drying drum (101) is provided on the upper surface of the distribution pipe (304). A recycling box (302) is provided at the bottom left end of the drying drum (101). A recycling pipe (301) is provided between the recycling box (302) and the distribution pipe (304).

5. A drying device for pretreatment of mixed grain raw materials according to claim 4, characterized in that, The recycling bin (302) has a funnel-shaped cloth bag (306) on the inner side of the right end, an exhaust pipe (303) on the left end of the recycling bin (302), a filter layer (308) on the inner end of the exhaust pipe (303), and a spiral retention plate (307) on the inner surface of the exhaust pipe (303).

6. A drying device for pretreatment of mixed grain raw materials according to claim 1, characterized in that, The drying drum (101) is provided with a discharge pipe (102) at the right end. The drying drum (101) forms an acute angle with the horizontal direction, and the right end of the drying drum (101) is lower than the left end.

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