Vertical steam-rice bran spreading and cooling integrated machine

Abstract

This invention provides a vertical integrated steaming and cooling bran machine, belonging to the field of grain processing machinery technology. It includes a cooling chamber, a steaming chamber, and a discharge component. The cooling chamber has a cooling support frame at the bottom and a steaming support frame at the top, forming a cooling cavity between them. A discharge channel communicating with the cooling cavity exists between the cooling support frame and the cooling chamber, and a transfer channel exists between the steaming support frame and the cooling chamber. The steaming chamber is vertically fixed above the cooling chamber and, together with the steaming support frame, forms the steaming cavity, which communicates with the transfer channel. The discharge component is rotatably connected to the center of the cooling support frame and the steaming support frame. The discharge component is used to rotate and push the bran material in the steaming cavity into the transfer channel and to rotate and push the bran material in the cooling cavity into the discharge channel. The vertical integrated steaming and cooling bran machine provided by this invention not only has a small footprint but also improves the timeliness of bran cooling after steaming.

Description

Technical Field

[0001] This invention belongs to the field of grain processing machinery technology, specifically relating to a vertical steaming and cooling integrated machine. Background Technology

[0002] Steaming the rice husks and cooling them are two key steps in the brewing process of baijiu. Steaming the rice husks involves treating them with high-temperature steam to sterilize them and remove impurities, while cooling them means allowing the steamed rice husks to cool and return to a dry and loose state, creating a suitable microbial environment for subsequent fermentation processes.

[0003] In existing technologies, most integrated steaming and cooling rice husk machines are horizontal structures. They utilize horizontally arranged conveyor belts to spread the rice husks to a certain thickness, allowing them to continuously pass through the steaming and cooling sections. This structural feature dictates that they require a large floor space. Therefore, vertical steaming and cooling equipment is gaining increasing market attention. The technical challenge of using a vertical structure lies in the inability to directly connect the steaming and cooling equipment. A transfer device is needed between the two to transport the steamed rice husks to the cooling machine. However, this still results in a large floor space for the entire steaming and cooling process line. Furthermore, the rice husks remain at a high temperature during the transfer process, leading to a prolonged exposure to high temperature and humidity, which can easily cause the growth of harmful microorganisms, resulting in a decline in rice husk quality and ultimately affecting the wine. Summary of the Invention

[0004] This invention provides a vertical steaming and cooling integrated machine, which aims to reduce the floor space occupied by the steaming and cooling process line and improve the timeliness of cooling the rice husks after steaming.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: to provide a vertical steaming and cooling integrated machine, comprising: The cooling bin is fixedly supported on the ground by a base frame. The bottom of the cooling bin is equipped with a cooling tray and the top is equipped with a steaming tray. A cooling cavity is formed between the cooling tray and the steaming tray. There is a discharge channel between the cooling tray and the cooling bin that communicates with the bottom of the cooling cavity. There is a transfer channel between the steaming tray and the cooling bin. The steaming bin is vertically fixed above the cooling bin and together with the steaming rack forms the steaming chamber. The bottom of the steaming chamber is connected to the material transfer channel. The discharge component is vertically set and rotatably connected to the center of the cooling tray and the steaming tray. The discharge component is used to rotate and push the bran material in the steaming chamber into the transfer channel, and rotate and push the bran material in the cooling chamber into the discharge channel.

[0006] In one possible implementation, the cooling chamber has a material transfer ring cavity surrounding the steaming rack and a material discharge ring cavity surrounding the cooling rack; the bottom of the material transfer ring cavity has multiple material transfer ports spaced apart in the circumferential direction, and the bottom of the material discharge ring cavity has multiple material discharge ports spaced apart in the circumferential direction. The bottom periphery of the steaming chamber is provided with a transfer ring slit that communicates with the transfer ring cavity. The transfer ring slit, the transfer ring cavity and each transfer port together form a transfer channel. The bottom wall of the cooling chamber is provided with a discharge ring slit that communicates with the discharge ring cavity. The discharge ring slit, the discharge ring cavity and each discharge port together form a discharge channel.

[0007] In some embodiments, the walls of the steaming chamber are slidably connected to a material transfer baffle ring, which is used to partially block the gap of the material transfer ring to adjust the material transfer flow rate; the walls of the cooling chamber are slidably connected to a discharge baffle ring, which is used to partially block the gap of the discharge ring to adjust the discharge flow rate.

[0008] For example, the discharge component includes: The rotating drive component is fixedly connected to the bottom of the cooling tray; The drive shaft is rotatably connected to the center of the cooling tray and the steaming tray, and the drive shaft is connected to the output end of the rotary drive component; Several material transfer levers are spaced apart along the circumference of the steaming chamber at the part where the drive shaft enters the steaming chamber. Each material transfer lever passes through the material transfer ring seam and extends into the material transfer ring cavity. A material transfer scraper is provided at the part where the material transfer lever extends into the material transfer ring cavity. Several discharge levers are spaced apart along the circumference of the cooling chamber at the part where the drive shaft enters the cooling chamber. Each discharge lever extends into the discharge ring cavity through the discharge ring seam, and a discharge scraper is provided at the part where the discharge lever extends into the discharge ring cavity.

[0009] For example, the material transfer lever slides against the bottom of the steaming chamber, and the material discharge lever slides against the bottom of the cooling chamber; the material dispensing surfaces of both the material transfer lever and the material discharge lever have an involute profile.

[0010] In one possible implementation, the steaming tray has a steaming material cone at its center, which is fixedly connected to the drive shaft or the material transfer lever; the cooling tray has a cooling material cone at its center, which is fixedly mounted on the drive shaft; and the bottom of the steaming tray has a conveying cylinder corresponding to each material transfer port, and each conveying cylinder is used to discharge material toward the cone wall of the cooling material cone.

[0011] In some embodiments, the bottom of the cooling chamber wall is provided with an air inlet annular cavity, which has an air inlet that communicates with the outside. The cavity wall of the cooling chamber is circumferentially distributed with a number of air holes that communicate with the air inlet annular cavity. The top of the cooling chamber wall is provided with an exhaust port that communicates with the cooling chamber. The exhaust port is used to connect to a negative pressure power source.

[0012] For example, a baffle ring is provided inside the cooling chamber. The upper end of the baffle ring is located above each air hole and fixed to the cavity wall of the cooling chamber. The lower end of the baffle ring extends obliquely to the bottom of each air hole and forms an air inlet slit between it and the cavity wall of the cooling chamber.

[0013] For example, the cooling chamber wall is equipped with an openable inspection door corresponding to the cooling cavity, and at least one openable cleaning door is provided for the material transfer ring cavity and the material discharge ring cavity respectively.

[0014] In some embodiments, an air-insulated interlayer is formed within the walls of the cooling chamber based on a double-layer chamber structure.

[0015] The beneficial effects of the vertical steaming and cooling integrated machine provided by this invention are as follows: Compared with the prior art, in this vertical steaming and cooling integrated machine, the steaming chamber is directly fixed above the cooling chamber, and cooperates with the steaming bracket set on the top of the cooling chamber to form a steaming cavity for steaming the bran. The space inside the cooling chamber between the cooling bracket and the steaming bracket forms the cooling cavity. The cooling cavity and the steaming cavity are connected by a material transfer channel. A discharge channel is formed between the bottom of the cooling chamber and the cooling bracket. The bottom of the steaming cavity is moved by rotating the discharge component. The bran falls into the cooling chamber through the transfer channel, and after cooling in the cooling chamber, it is discharged through the discharge channel under the rotation of the discharge component. This achieves continuous steaming and cooling of the bran as it enters from the top of the steaming chamber and exits from the bottom of the cooling chamber. This not only takes up little space, but also allows the bran to enter the cooling chamber immediately after steaming for cooling, thereby improving the timeliness of cooling after steaming and preventing the bran from being in a high temperature and humidity state for a long time, which would breed harmful microorganisms and thus prevent the bran from producing off-flavors that would affect the wine. Attached Figure Description

[0016] Figure 1 A three-dimensional structural diagram of the vertical steaming and cooling integrated machine for rice bran provided in an embodiment of the present invention (only the bottom of the steaming chamber is shown); Figure 2 A cross-sectional view of the vertical steaming and cooling integrated machine for rice bran provided in an embodiment of the present invention (only the bottom of the steaming chamber is shown); Figure 3 For along Figure 2 Schematic diagram of the cross-sectional structure along line AA; Figure 4 This is a three-dimensional structural diagram of the discharge assembly used in an embodiment of the present invention; Figure 5 For along Figure 3 Schematic diagram of the cross-sectional structure of the middle BB line; Figure 6 For along Figure 3 Schematic diagram of the cross-sectional structure of the middle CC line; Figure 7 for Figure 3 A magnified schematic diagram of the structure at point D.

[0017] In the diagram: 10. Cooling chamber; 100. Cooling cavity; 101. Discharge channel; 1011. Discharge ring cavity; 1012. Discharge port; 1013. Discharge ring seam; 102. Transfer channel; 1021. Transfer ring cavity; 1022. Transfer port; 1023. Transfer ring seam; 103. Air inlet ring cavity; 104. Air inlet; 105. Air vent; 106. Exhaust vent; 107. Air insulation layer; 11. Base frame; 12. Cooling support frame; 1 21. Cooling cone; 13. Steaming rack; 131. Steaming cone; 132. Conveyor cylinder; 14. Transfer ring; 15. Discharge ring; 16. Retaining ring; 161. Air inlet; 17. Inspection door; 18. Cleaning door; 20. Steaming chamber; 200. Steaming cavity; 30. Discharge assembly; 31. Rotary drive component; 32. Drive shaft; 33. Transfer lever; 331. Transfer scraper; 34. Discharge lever; 341. Discharge scraper. Detailed Implementation

[0018] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0019] It should be noted that when an element is referred to as being "set on" or "connected to" another element, it can be directly on or indirectly on the other element. It should be understood that the terms "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. In the description of this application, "a plurality of" or "several" means two or more, unless otherwise explicitly specified.

[0020] It should be noted that this application is an improvement on the applicant's earlier patent application (application number: 2025117858060, title: Vertical Continuous Rice Bran Steaming Machine). The vertical continuous rice bran steaming machine disclosed in the earlier application needs to be used in conjunction with a traditional horizontal cooling machine, and a conveyor belt transfer device needs to be set up between the two. The rice bran steaming process is that the rice bran enters from the top and falls continuously and evenly, while steam enters from both the bin wall and the steam center and penetrates upward through the rice bran, thereby achieving continuous steaming of the rice bran. Finally, the rice bran is discharged from the bottom and transferred to the cooling section.

[0021] Because the steaming process can raise the temperature of the rice bran to over 95°C, the high temperature and humidity environment is an ideal breeding ground for harmful microorganisms such as acetic acid bacteria and lactic acid bacteria. If the rice bran is not cooled in time after steaming, the risk of harmful microorganisms will increase, leading to rancidity and the generation of off-flavor substances (such as acetic acid and lactic acid), which will affect the subsequent fermentation process and ultimately affect the wine.

[0022] Please refer to the following: Figures 1 to 7 The vertical steaming and cooling integrated machine provided by the present invention will now be described. The vertical steaming and cooling integrated machine includes a cooling chamber 10, a steaming chamber 20, and a discharge component 30. The cooling chamber 10 is fixedly supported on the ground by a base frame 11. The bottom of the cooling chamber 10 is provided with a cooling support 12 and the top is provided with a steaming support 13. A cooling cavity 100 is formed between the cooling support 12 and the steaming support 13. There is a discharge channel 101 between the cooling support 12 and the cooling chamber 10, which communicates with the bottom of the cooling cavity 100. There is a transfer channel 102 between the steaming support 13 and the cooling chamber 10.

[0023] The steaming hopper 20 is vertically fixed above the cooling hopper 10 and together with the steaming hopper support 13 forms the steaming chamber 200. The bottom of the steaming chamber 200 is connected to the transfer channel 102. The discharge component 30 is vertically set and rotatably connected to the center of the cooling hopper support 12 and the steaming hopper support 13. The discharge component 30 is used to rotate and push the bran material in the steaming chamber 200 into the transfer channel 102 and rotate and push the bran material in the cooling chamber 100 into the discharge channel 101.

[0024] The vertical steaming and cooling integrated machine provided in this embodiment, compared with the prior art, has a steaming chamber 20 directly fixed above the cooling chamber 10, and cooperates with the steaming bracket 13 set on the top of the cooling chamber 10 to form a steaming cavity 200 for steaming the bran. The space inside the cooling chamber 10 between the cooling bracket 12 and the steaming bracket 13 forms the cooling cavity 100. The cooling cavity 100 and the steaming cavity 200 are connected by a material transfer channel 102. A discharge channel 101 is formed between the bottom of the cooling chamber 10 and the cooling bracket 12. The bottom of the steaming cavity 200 is rotated by the discharge component 30. The bran falls into the cooling chamber 100 through the transfer channel 102, and after being cooled in the cooling chamber 100, it is discharged through the discharge channel 101 under the rotation of the discharge component 30. This achieves continuous steaming and cooling of the bran as it enters from the top of the steaming chamber 200 and exits from the bottom of the cooling chamber 100. This not only takes up little space, but also allows the bran to enter the cooling chamber 100 immediately after steaming for cooling, thereby improving the timeliness of cooling the bran after steaming and preventing the bran from being in a high temperature and high humidity state for a long time, which would breed harmful microorganisms and thus prevent the bran from producing off-flavors that would affect the wine.

[0025] In some embodiments, see Figures 2 to 6The cooling chamber 10 has a material transfer ring cavity 1021 surrounding the steaming rack 13 and a material discharge ring cavity 1011 surrounding the cooling rack 12; the bottom of the material transfer ring cavity 1021 has a plurality of material transfer ports 1022 distributed circumferentially, and the bottom of the material discharge ring cavity 1011 has a plurality of material discharge ports 1012 distributed circumferentially.

[0026] The bottom periphery of the steaming chamber 200 is provided with a material transfer ring slit 1023 that communicates with the material transfer ring chamber 1021. The material transfer ring slit 1023, the material transfer ring chamber 1021 and each material transfer port 1022 together form a material transfer channel 102. The bottom periphery of the cooling chamber 100 is provided with a material discharge ring slit 1013 that communicates with the material discharge ring chamber 1011. The material discharge ring slit 1013, the material discharge ring chamber 1011 and each material discharge port 1012 together form a material discharge channel 101.

[0027] The transfer ring cavity 1021 is lower in height than the steaming cavity 200. The bran material reaching the bottom of the steaming cavity 200 from top to bottom falls into the transfer ring cavity 1021 through the transfer ring gap 1023 under the rotation of the discharge component 30, and then falls into the cooling cavity 100 through each transfer port 1022. The bran material is cooled by moving from top to bottom to the bottom of the cooling cavity 100. Then, under the rotation of the discharge component 30, it enters the discharge ring cavity through the discharge ring gap and is finally discharged from the discharge port 1012 under the drive of the discharge component 30, thus realizing the continuous steaming and cooling process.

[0028] It should be noted that the transfer speed from the steaming chamber 200 to the cooling chamber 100 depends on the rotational speed of the discharge component 30, the cross-sectional area of ​​the steaming chamber 200, and the width of the transfer ring slit 1023. Similarly, the discharge speed from the cooling chamber 100 depends on the rotational speed of the discharge component 30, the cross-sectional area of ​​the cooling chamber 100, and the width of the discharge ring slit. When the rotational speeds of the bran material in the steaming chamber 200 and the cooling chamber 100 are the same, but the cross-sectional areas of the steaming chamber 200 and the cooling chamber 100 are different, the feed flow rate and discharge flow rate of the cooling chamber 100 can be made consistent by adaptively adjusting the width of the transfer ring slit 1023 and the discharge ring slit. This ensures that the bran material in the cooling chamber 100 maintains a stable thickness, thereby guaranteeing the uniformity of the cooling degree of the bran material entering the cooling chamber 100.

[0029] For some possible implementations, please refer to [link / reference]. Figure 2 The steaming chamber 200 has a material transfer baffle ring 14 that slides vertically on its chamber wall. The material transfer baffle ring 14 is used to partially block the material transfer ring gap 1023 to adjust the material transfer flow rate. The cooling chamber 100 has a discharge baffle ring 15 that slides vertically on its chamber wall. The discharge baffle ring 15 is used to partially block the discharge ring gap 1013 to adjust the discharge flow rate.

[0030] Both the transfer ring 14 and the discharge ring 15 can be provided with a long strip hole and fixed to their respective cavity wall positions by fasteners such as screws. When vertical adjustment is required, the fasteners can be loosened, adjusted to the correct position, and then tightened again. This achieves both vertical sliding connection of the transfer ring 14 and the discharge ring 15 and stable locking of the sliding position, resulting in a simple and reliable structure.

[0031] By setting up adjustable material transfer baffle 14 and discharge baffle 15, the material transfer flow rate from the steaming chamber 200 to the cooling chamber 100 and the discharge flow rate of the cooling chamber 100 can be flexibly adjusted. This allows for adjustment of the residence time of the bran in the steaming chamber 200 and the cooling chamber 100 according to different steaming and cooling process duration requirements. (The faster the rotation speed of the discharge component 30, the shorter the residence time; conversely, the longer the residence time, the better. When the cross-sectional areas of the steaming chamber 200 and the cooling chamber 100 are different, changes in the rotation speed of the discharge component 30 will cause differences in the material transfer flow rate and the discharge flow rate. Therefore, it is necessary to adjust the height of the material transfer baffle and the discharge baffle to compensate for the flow difference, thereby ensuring the stability of the material thickness in the cooling chamber 100.) This improves process adaptability.

[0032] As one specific embodiment of the above-mentioned discharge component 30, please refer to Figures 2 to 6 It is understood that the discharge assembly 30 includes a rotary drive 31, a drive shaft 32, a plurality of material turning levers 33 and a plurality of discharge levers; the rotary drive 31 is fixedly connected to the bottom of the cooling tray 12; the drive shaft 32 is rotatably connected to the center of the cooling tray 12 and the steaming tray 13, and the drive shaft 32 is connected to the output end of the rotary drive 31.

[0033] Each material transfer lever 33 is spaced apart along the circumference of the steaming chamber 200 at the location where the drive shaft 32 enters the steaming chamber 200. Each material transfer lever 33 passes through the material transfer ring 1023 and extends into the material transfer ring cavity 1021. A material transfer scraper 331 is provided at the location where the material transfer lever 33 extends into the material transfer ring cavity 1021. Each material discharge lever 34 is spaced apart along the circumference of the cooling chamber 100 at the location where the drive shaft 32 enters the cooling chamber 100. Each material discharge lever 34 passes through the material discharge ring 1013 and extends into the material discharge ring cavity 1011. A material discharge scraper 341 is provided at the location where the material discharge lever 34 extends into the material discharge ring cavity 1011.

[0034] The rotary drive component 31 can specifically be a motor equipped with a reducer. The rotary drive component 31 drives the drive shaft 32 to rotate, which in turn drives each material transfer lever 33 and each material discharge lever to rotate synchronously. Specifically, the material transfer lever 33 can push the bran material at the bottom of the steaming chamber 200 into the material transfer ring cavity 1021 through the material transfer ring seam 1023. Then, the material transfer scraper 331 scrapes the bran material falling into the material transfer ring cavity 1021 into each material transfer hole, so that the bran material falls into the cooling chamber 100. The material discharge lever 34 pushes the bran material at the bottom of the cooling chamber 100 into the material discharge ring cavity 1011 through the material discharge ring seam 1013. Then, the material discharge scraper 341 scrapes the bran material falling into the material discharge ring cavity 1011 into each material discharge port 1012, so that the bran material is centrally discharged through the material discharge port 1012 after cooling.

[0035] It is important to understand that, under normal circumstances, the time required for cooling using traditional horizontal cooling equipment (approximately 40 minutes) is slightly longer than the steaming time (approximately 30 minutes). The cooling time depends on the conveying speed and length of the horizontal cooling equipment. Since the cooling efficiency needs to be consistent with the steaming efficiency to achieve continuous operation of steaming and cooling, the cooling time requirement can only be met by increasing the length of the equipment. This is the main reason why horizontal cooling equipment occupies a large area.

[0036] In the process of developing this application, it was discovered that the low cooling efficiency of horizontal cooling equipment is due to the fact that the cooling process relies entirely on cooling air penetrating the bran accumulated on the conveyor line to remove heat and moisture from the bran. However, in this application, when a stable material thickness is maintained within the cooling chamber 100, the process of the bran falling from the transfer port 1022 onto the material level surface can form a countercurrent contact with the upward-flowing cooling airflow. This allows the bran to undergo a rapid cooling process during its fall within the cooling chamber 100, and then slowly cool to the target temperature as it gradually falls to the material level surface.

[0037] Through the above cooling process, compared with the traditional horizontal cooling method, the bran can be cooled efficiently by transferring and spreading it from the steaming chamber 200 to the cooling chamber 100. This not only allows the bran to be cooled down quickly to a safe temperature (below the temperature suitable for the growth of harmful microorganisms), thus avoiding the risk of off-flavors from the bran and helping to improve the quality of the wine, but also improves the cooling efficiency, so that the steaming and cooling speeds of the bran tend to be consistent, thereby improving the continuity and stability of the steaming and cooling process.

[0038] It should be noted that, as Figures 4 to 6 As shown, in this embodiment, the material transfer lever 33 is slidably attached to the bottom of the steaming chamber 200, and the material discharge lever 34 is slidably attached to the bottom of the cooling chamber 100; the material dispensing surfaces of both the material transfer lever 33 and the material discharge lever 34 are involute contours.

[0039] An involute profile is a trajectory curve formed by a point on a straight line when it rolls purely on a base circle, possessing a stable force transmission direction. Both the material transfer lever 33 and the discharge lever 34 slide against their respective cavity bottoms during rotation, ensuring a continuous and residue-free material transfer process. The involute profile of the material transfer surface allows it to generate a constant force transmission direction towards the material in front of it, ensuring that the frictional force between the bran and the material transfer surface is consistent across all positions. This ensures that the bran in the central and peripheral areas of the cavity bottom can synchronously disperse outwards, achieving a layered discharge of the bran from the cavity bottom. This ensures that the material level maintains a stable thickness. For steaming the bran, the resistance of steam penetrating all areas of the steaming cavity 200 tends to be consistent, ensuring consistent steaming degree of the bran. For cooling, the resistance of the cooling airflow penetrating all areas of the cooling cavity 100 also tends to be consistent, improving the consistency of cooling degree.

[0040] In some embodiments, please refer to Figures 2 to 4 The steaming bran support 13 has a steaming bran distribution cone 131 at its center, which is fixedly connected to the drive shaft 32 or the material transfer lever 33; the cooling support 12 has a cooling distribution cone 121 at its center, which is fixedly mounted on the drive shaft 32; the bottom of the steaming bran support 13 is provided with a conveying cylinder 132 corresponding to each material transfer port 1022, and each conveying cylinder 132 is used to discharge material toward the cone wall of the cooling distribution cone 121.

[0041] The purpose of setting the steaming bran dispersion cone 131 is to make the bran material in the steaming chamber 200 spread evenly in all directions as it falls to the bottom of the chamber. On the one hand, this can prevent the bran material from rising to the top in the center of the steaming chamber 200, which would affect the uniformity of the material thickness in the steaming chamber 200. On the other hand, since the turning radius of the material transfer rod 33 near the center of the steaming chamber 200 is too small, it cannot produce an effective material spreading effect. By setting the steaming bran dispersion cone 131, the bottom of the cone can block the part of the material transfer rod 33 that cannot produce an effective material spreading effect, so that the bran material is evenly dispersed in all directions under the guidance of the cone wall, thereby improving the uniformity of material output from the steaming chamber 200.

[0042] The purpose of setting the cooling material cone 121 in the cooling chamber 100 is the same as that of setting the steaming material cone 131 in the steaming chamber 200. It can make the bran material spread evenly around the cooling chamber 100 under the guidance of the cooling material cone 121, and then enter the effective material feeding area of ​​the feeding surface of the discharge rod, thereby improving the uniformity of material feeding from the cooling chamber 100 to the surrounding area. This ensures that the material thickness in the cooling chamber 100 can always remain stable, which is conducive to improving the consistency of cooling degree in various areas of the cooling chamber 100.

[0043] In addition, both the steaming bran cone 131 and the cooling bran cone 121 can rotate synchronously with the drive shaft 32, thereby forming a dynamic guide for the bran. Especially for the cooling chamber 100, the steamed bran is directly sprinkled onto the cone wall of the cooling bran cone 121 under the conveying of the conveyor cylinder 132. After colliding with the cone wall of the rotating cooling bran cone 121, the rotating cooling bran cone 121 can create the effect of throwing the bran in all directions. Compared with the static method of guiding the bran to slide in all directions, it can not only further improve the uniformity of the distribution of the bran in the cooling chamber 100, but also allow the bran to fully contact the cooling airflow flowing from bottom to top during the process of being scattered in all directions. This can make full use of the process before the bran falls onto the material level surface, so that the bran can be rapidly cooled during the scattering process, thereby improving the cooling efficiency.

[0044] Specifically, in combination Figure 3 and Figure 7 Understandably, in this embodiment, the ventilation method of the cooling chamber 10 is as follows: the bottom of the cooling chamber 10 is provided with an air inlet annular cavity 103, the air inlet annular cavity 103 has an air inlet 104 communicating with the outside, and the cavity wall of the cooling chamber 100 is circumferentially distributed with a number of air holes 105 communicating with the air inlet annular cavity 103; the top of the cooling chamber 10 is provided with an exhaust port 106 communicating with the cooling chamber 100, and the exhaust port 106 is used to connect to a negative pressure power source.

[0045] The negative pressure power source can be a negative pressure fan. The negative pressure power source generates suction force on the exhaust port 106, thereby creating negative pressure in the cooling chamber 100, which in turn creates negative pressure in the air inlet ring chamber 103. Finally, cooling air enters through the air inlet 104, thus forming a flow path of cooling air from the air inlet 104 through the air inlet ring chamber 103, each air hole 105, the cooling chamber 100, and the exhaust port 106. Since the exhaust port 106 is higher than the air holes 105, a cooling airflow is formed in the cooling chamber 100 that penetrates the bran from bottom to top. The cooling airflow also forms a countercurrent contact with the bran that is sprinkled downwards from the transfer port 1022, thereby improving the cooling efficiency.

[0046] The air inlet ring cavity 103 with a ring of air holes 105 distributed circumferentially can achieve circumferential uniform air intake in the cooling cavity 100, thereby improving the consistency of cooling airflow in various areas of the cooling cavity 100 and thus improving the uniformity of cooling.

[0047] It should be noted that, to avoid rice bran clogging the air vent 105 and rice bran leakage, please refer to [link / reference needed]. Figure 7 In this embodiment, a baffle ring 16 is provided in the cooling cavity 100. The upper end of the baffle ring 16 is located above each air hole 105 and is fixed to the cavity wall of the cooling cavity 100. The lower end of the baffle ring 16 extends obliquely to the lower part of each air hole 105 and forms an air inlet slit 161 between it and the cavity wall of the cooling cavity 100.

[0048] The baffle ring 16 can form a shield above and to the side of the air holes 105, thereby preventing the bran from directly contacting the area of ​​the cooling cavity 100 where the air holes 105 are distributed. This not only prevents the bran from leaking from the air holes 105 into the air inlet ring cavity 103 and from clogging the air holes 105, but also forms an air inlet slit 161 between the baffle ring 16 and the cavity wall of the cooling cavity 100 to allow air to circulate, thereby improving the smoothness and uniformity of air intake from the air inlet ring cavity 103 into the cooling cavity 100.

[0049] The downward-facing opening of the air inlet slit 161 not only prevents bran from falling into the air inlet slit 161 and clogging the air hole 105, but also allows the cooling airflow to form a path that bypasses the lower end of the baffle ring 16 when passing through the air inlet slit 161. This ensures that the bran at the bottom of the cooling chamber 100 can come into contact with the cooling airflow, allowing the cooling airflow to penetrate the entire bran layer from the bottom of the chamber upwards, which is beneficial to improving the cooling efficiency.

[0050] It should be understood that, in this embodiment, as Figure 1 As shown, the cooling chamber 10 has an openable maintenance door 17 corresponding to the cooling cavity 100, and at least one openable cleaning door 18 corresponding to the material transfer ring cavity 1021 and the material discharge ring cavity 1011. By setting the maintenance door 17 and the cleaning door 18, the convenience of cleaning the bran in the cavity can be improved, avoiding the long downtime caused by the inability to quickly clean the material after blockage in the cooling cavity 100, the material transfer ring cavity 1021 and the material discharge ring cavity 1011 (the main blockage locations are the material transfer ring seam 1023 and the material discharge ring seam, and it is more efficient and convenient to operate in the cooling cavity 100 after opening the maintenance door 17).

[0051] For example, see Figure 3 The cooling chamber 10 has an air-insulated interlayer 107 formed within its walls based on a double-layer structure. Since the temperature of the bran is high after steaming, while the external ambient temperature of the cooling chamber 10 is much lower, condensation easily occurs due to the temperature difference between the inside and outside of the cooling chamber 10. This condensation affects the cooling efficiency and the dryness and looseness of the cooled bran. Therefore, a double-layer structure is used to construct the air-insulated interlayer 107, thereby reducing the influence of the external temperature on the temperature inside the cooling chamber 100, which helps to reduce condensation and improves cooling efficiency and effectiveness.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A vertical steaming and cooling machine, characterized in that, include: The cooling silo is fixedly supported on the ground by a base frame. The bottom of the cooling silo is provided with a cooling support and the top is provided with a steaming support. A cooling cavity is formed between the cooling support and the steaming support. There is a discharge channel between the cooling support and the cooling silo that communicates with the bottom of the cooling cavity. There is a transfer channel between the steaming support and the cooling silo. The rice bran steaming chamber is vertically fixed above the cooling chamber and together with the rice bran steaming bracket forms a rice bran steaming cavity. The bottom of the rice bran steaming cavity is connected to the material transfer channel. The discharge component is vertically arranged and rotatably connected to the center of the cooling tray and the steaming tray. The discharge component is used to rotate and push the bran material in the steaming chamber into the transfer channel, and rotate and push the bran material in the cooling chamber into the discharge channel.

2. The vertical steaming and cooling integrated machine as described in claim 1, characterized in that, The cooling chamber has a material transfer ring cavity surrounding the steaming rack and a material discharge ring cavity surrounding the cooling rack; the bottom of the material transfer ring cavity has multiple material transfer ports spaced apart in the circumferential direction, and the bottom of the material discharge ring cavity has multiple material discharge ports spaced apart in the circumferential direction. The bottom periphery of the steaming chamber is provided with a transfer ring slit that communicates with the transfer ring cavity. The transfer ring slit, the transfer ring cavity, and each of the transfer ports together form the transfer channel. The cooling chamber has a discharge ring slit on its bottom periphery that communicates with the discharge ring cavity. The discharge ring slit, the discharge ring cavity, and each discharge port together form the discharge channel.

3. The vertical steaming and cooling integrated machine as described in claim 2, characterized in that, The steaming chamber has a material transfer baffle ring that slides vertically along its wall. The material transfer baffle ring is used to partially block the gap of the material transfer ring to adjust the material transfer flow rate. The cooling chamber has a discharge baffle ring that slides vertically along its wall. The discharge baffle ring is used to partially block the gap of the discharge ring to adjust the discharge flow rate.

4. The vertical steaming and cooling integrated machine as described in claim 2, characterized in that, The discharge assembly includes: A rotary drive component is fixedly connected to the bottom of the cooling tray; A drive shaft is rotatably connected to the center of the cooling tray and the steaming tray, and the drive shaft is connected to the output end of the rotary drive component; A plurality of material transfer levers are arranged at intervals along the circumference of the steaming chamber at the part where the drive shaft enters the steaming chamber. Each material transfer lever passes through the material transfer ring gap and extends into the material transfer ring cavity, and a material transfer scraper is provided at the part where the material transfer lever extends into the material transfer ring cavity. A plurality of discharge levers are spaced apart along the circumference of the cooling cavity at the part where the drive shaft enters the cooling cavity. Each discharge lever passes through the discharge annular seam and extends into the discharge annular cavity, and a discharge scraper is provided at the part of the discharge lever that extends into the discharge annular cavity.

5. The vertical steaming and cooling integrated machine as described in claim 4, characterized in that, The material transfer lever slides against the bottom of the steaming chamber, and the material discharge lever slides against the bottom of the cooling chamber; the material transfer surfaces of both the material transfer lever and the material discharge lever have an involute profile.

6. The vertical steaming and cooling integrated machine as described in claim 4, characterized in that, The steaming bran support has a steaming bran distribution cone at its center, which is fixedly connected to the drive shaft or the material transfer lever; the cooling support has a cooling distribution cone at its center, which is fixedly fitted onto the drive shaft; wherein, the bottom of the steaming bran support is provided with a conveying cylinder corresponding to each of the material transfer ports, and each of the conveying cylinders is used to discharge material toward the cone wall of the cooling distribution cone.

7. The vertical steaming and cooling integrated machine as described in claim 1, characterized in that, The cooling chamber has an air inlet ring cavity at the bottom of its wall, which has an air inlet that communicates with the outside. The cooling chamber wall has several air holes that communicate with the air inlet ring cavity distributed circumferentially. The cooling chamber wall has an exhaust port that communicates with the cooling chamber at the top, which is used to connect to a negative pressure power source.

8. The vertical steaming and cooling integrated machine as described in claim 7, characterized in that, The cooling chamber is provided with a baffle ring. The upper end of the baffle ring is located above each of the air holes and is fixed to the cavity wall of the cooling chamber. The lower end of the baffle ring extends obliquely to the bottom of each of the air holes and forms an air inlet slit with the cavity wall of the cooling chamber.

9. The vertical steaming and cooling integrated machine as described in claim 2, characterized in that, The cooling chamber wall is provided with an openable maintenance door corresponding to the cooling cavity, and at least one openable cleaning door is provided corresponding to the material transfer ring cavity and the material discharge ring cavity respectively.

10. The vertical steaming and cooling integrated machine as described in any one of claims 1-9, characterized in that, The cooling chamber has an air-insulated interlayer formed inside its walls based on a double-layer structure.

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