A coffee bean drying apparatus

Abstract

This utility model discloses a coffee bean drying device, relating to the field of coffee processing technology. It includes a drying cylinder and a feeding cylinder. A cylinder cover is movably mounted on top of the drying cylinder, and the drying cylinder and the cylinder cover are connected by a lifting mechanism. Two L-shaped connecting plates are fixedly installed at the bottom of the cylinder cover. In use, the feeding cylinder is first positioned on top of the feeding plate by a positioning block. The lifting mechanism lowers the feeding cylinder into the drying cylinder, and then the cylinder cover is closed, allowing the drying process to begin. During the downward movement of the feeding cylinder, a limiting mechanism can limit its movement, preventing shaking and improving stability. Furthermore, during the drying process, the combined action of a circulation mechanism and a stirring mechanism stirs the coffee beans inside the feeding cylinder and lifts the beans from the bottom to the top, thus achieving uniform drying.

Description

Technical Field

[0001] This utility model relates to the field of coffee processing technology, and in particular to a coffee bean drying device. Background Technology

[0002] Coffee beans are the fruit of a plant used to make coffee. Making coffee from them requires many processes, including peeling, degumming, grading and sorting, drying, storage, hulling, and polishing.

[0003] The prior art patent CN218566015U discloses a coffee bean drying device that can dry coffee beans. However, the existing equipment has obvious defects in actual operation. Its stirring mechanism can only turn the coffee beans in the feeding cylinder in a horizontal direction. This single stirring mode causes uneven heating of the coffee beans during the drying process. The bottom material is over-dried due to continuous contact with the heat source, while the top material is difficult to dry to the ideal degree due to insufficient heat conduction. In the end, the overall drying effect is inconsistent, which seriously affects the quality of the finished product. In order to solve the above problems, a coffee bean drying device is proposed. Utility Model Content

[0004] The purpose of this application is to provide a coffee bean drying apparatus to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this application provides the following technical solution: a coffee bean drying device, comprising a drying cylinder and a feeding cylinder, wherein a cylinder cover is movably disposed above the drying cylinder, the drying cylinder and the cylinder cover are connected by a lifting mechanism, two L-shaped connecting plates are fixedly installed at the bottom of the cylinder cover, and a placement plate is fixedly installed on the inner top wall of the two L-shaped connecting plates, the feeding cylinder is disposed on the top of the placement plate by a limiting mechanism, a circulation cylinder is fixedly installed at the bottom of the cylinder cover, a circulation mechanism is disposed inside the circulation cylinder, and a stirring mechanism is disposed at the bottom of the cylinder cover, the stirring mechanism being used to stir the material in the feeding cylinder.

[0006] Preferably, the lifting mechanism includes two screw guide sleeves, and four mounting blocks are fixedly installed on the outer periphery of the drying cylinder. The two screw guide sleeves are rotatably mounted on the four mounting blocks respectively. A lifting motor is fixedly installed at the bottom of one of the mounting blocks. The output shaft of the lifting motor is connected to the bottom end of one of the screw guide sleeves. Screws are threadedly installed inside both screw guide sleeves. A lifting ring is fixedly installed at the top of both screws. The lifting ring is connected to the cylinder cover by bolts.

[0007] Preferably, the lifting mechanism further includes two transmission gears, which are respectively fixedly sleeved on the two screw guide sleeves. An annular groove is provided on the outer circumferential wall of the drying cylinder, and an annular rack that meshes with the two transmission gears is rotatably installed in the annular groove.

[0008] Preferably, the limiting mechanism includes two insert rods, each of the two L-shaped connecting plates has a square cavity, and each of the two square cavities has a sliding hole on its opposite inner wall. The two insert rods are slidably installed in the four sliding holes, and each of the two insert rods is fixedly sleeved with a rectangular plate. Each of the two insert rods has a compression spring sleeved on its peripheral outer wall. The peripheral outer wall of the discharge cylinder has two slots, and each of the two slots is adapted to the two insert rods.

[0009] Preferably, the circulation mechanism includes a rotating shaft, a transmission cavity is provided inside the cylinder cover, the top end of the rotating shaft is rotatably mounted on the top inner wall of the transmission cavity, a drive motor is fixedly mounted on the top end of the cylinder cover, the output shaft of the drive motor is connected to the top end of the rotating shaft, the bottom end of the rotating shaft extends into the circulation cylinder, a lifting auger is fixedly mounted on the outer circumferential wall of the rotating shaft, and two discharge holes are provided on the outer circumferential wall of the circulation cylinder.

[0010] Preferably, the stirring mechanism includes two stirring shafts, the top ends of which are rotatably mounted on the top inner wall of the transmission cavity, the bottom ends of which extend to the outside of the cylinder cover, and a plurality of stirring rods are evenly arranged on the peripheral outer walls of the two stirring shafts.

[0011] Preferably, a large gear is fixedly sleeved on the outer circumferential wall of the rotating shaft, and a small gear is fixedly sleeved on the outer circumferential wall of each of the two stirring shafts, with both small gears meshing with the large gear.

[0012] In summary, the technical effects and advantages of this utility model are as follows:

[0013] In this invention, a drive motor drives a rotating shaft and an auger to rotate. The auger then lifts the coffee beans at the bottom of the circulation drum, causing them to move upwards until they reach the two discharge holes and fall onto the top of the discharge drum, thus achieving a circulation function and improving the uniform drying effect of the coffee beans. Furthermore, when the rotating shaft rotates, it drives the stirring shaft to rotate, which stirs the coffee beans and increases the drying rate.

[0014] In this invention, when the two L-shaped connecting plates move downwards synchronously, they can drive the two insert rods to move synchronously. When the inclined surface of the insert rod contacts the inner wall of the drying cylinder, the insert rod can move horizontally through the squeezing action, thereby realizing the insertion function with the slot on the outer wall of the discharge cylinder and avoiding the discharge cylinder from shaking during the drying process. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of a coffee bean drying device according to an embodiment of the present invention;

[0017] Figure 2 This is a partial cross-sectional view of the drying cylinder, lifting ring, cylinder cover, feeding cylinder, and L-shaped connecting plate in an embodiment of this utility model.

[0018] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle;

[0019] Figure 4 for Figure 2 Enlarged structural diagram at point B;

[0020] Figure 5 for Figure 2 Enlarged structural diagram at point C.

[0021] In the diagram: 1. Drying cylinder; 2. Lifting ring; 3. Cylinder cover; 4. Screw guide sleeve; 5. Mounting block; 6. Transmission gear; 7. Ring rack; 8. Lifting motor; 9. Screw; 10. Discharge cylinder; 11. Placement plate; 12. L-shaped connecting plate; 13. Positioning block; 14. Insert rod; 15. Rectangular plate; 16. Compression spring; 17. Circulation cylinder; 18. Rotating shaft; 19. Lifting auger; 20. Drive motor; 21. Stirring shaft; 22. Large gear; 23. Small gear. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example: Reference Figures 1-5The coffee bean drying device shown includes a drying cylinder 1 and a feeding cylinder 10. Specifically, both the drying cylinder 10 and the feeding cylinder 10 are prior art. For details, please refer to the coffee bean drying device disclosed in prior art with publication number CN218566015U. A dryer (not shown in the figure) is provided at the bottom of the drying cylinder 1. Its specific working principle will not be described in detail here. A cylinder cover 3 is movably provided above the drying cylinder 1. The drying cylinder 1 and the cylinder cover 3 are connected by a lifting mechanism. Two L-shaped connecting plates 12 are fixedly installed at the bottom of the cylinder cover 3. A placement plate 11 is fixedly installed on the top inner wall of the receiving plate 12. Specifically, a positioning block 13 is fixedly installed on the top of the placement plate 11. A positioning groove is opened at the bottom of the feeding cylinder 10. Multiple air holes are evenly opened on the top of the placement plate 11. The positions of the multiple air holes are all corresponding to the drying cylinder 10. The feeding cylinder 10 is set on the top of the placement plate 11 by a limiting mechanism. A circulation cylinder 17 is fixedly installed at the bottom of the cylinder cover 3. A circulation mechanism is set inside the circulation cylinder 17. A stirring mechanism is set at the bottom of the cylinder cover 3. The stirring mechanism is used to stir the material in the feeding cylinder 10.

[0024] With the above structure, in use, the feeding cylinder 10 is first placed on the top of the placement plate 11 by the positioning block 13. After the feeding cylinder 10 is lowered into the drying cylinder 1 by the lifting mechanism, the cylinder cover 3 is closed and the drying function is realized through the drying cylinder 1. During the downward movement of the feeding cylinder 10, the limiting mechanism can limit the feeding cylinder 10 to prevent it from shaking during the drying process, thereby improving stability. In addition, during the drying process, the coffee beans in the feeding cylinder 10 can be stirred by the cooperation of the circulation mechanism and the stirring mechanism, and the coffee beans at the bottom can be lifted to the top, thereby realizing the function of uniform drying.

[0025] like Figure 2 and Figure 3 As shown, the lifting mechanism includes two screw guide sleeves 4. Four mounting blocks 5 are fixedly installed on the outer periphery of the drying cylinder 1. Specifically, the two mounting blocks 5 located at the bottom are U-shaped. The two screw guide sleeves 4 are rotatably mounted on the four mounting blocks 5 respectively. A lifting motor 8 is fixedly installed at the bottom of one of the mounting blocks 5. Specifically, the lifting motor 8 can be controlled by a PLC controller. The output shaft of the lifting motor 8 is connected to the bottom end of one of the screw guide sleeves 4. Screws 9 are threadedly installed inside both screw guide sleeves 4. A lifting ring 2 is fixedly installed at the top of both screws 9. The lifting ring 2 is connected to the cylinder cover 3 by bolts. Specifically, the top of the cylinder cover 3 has multiple threaded holes, and the top of the lifting ring 2 has multiple threaded grooves. Multiple bolts are threadedly installed in the multiple threaded holes and multiple threaded grooves respectively.

[0026] In this implementation plan, the lifting motor 8 is started to drive the two screw guide sleeves 4 to rotate synchronously. When the two screw guide sleeves 4 rotate, through the thread action with the screw 9, they can drive the two screws 9, the lifting ring 2, and the cylinder cover 3 to move up and down synchronously, thereby driving the two L-shaped connecting plates 12, the placement plate 11, and the discharge cylinder 10 to move up and down synchronously. There is no need for the staff to take them out from the drying cylinder 1, thus avoiding the phenomenon of burns caused by excessively high temperature on the inner wall of the drying cylinder 1.

[0027] like Figure 2 and Figure 3 As shown, the lifting mechanism also includes two transmission gears 6, which are respectively fixedly sleeved on two screw guide sleeves 4. An annular groove is provided on the outer circumferential side of the drying cylinder 1, and an annular rack 7 that meshes with the two transmission gears 6 is rotatably installed in the annular groove.

[0028] In this embodiment, when one of the screw guide sleeves 4 rotates, it can drive one of the transmission gears 6 to rotate. Through the meshing action with the ring rack 7, it drives the other transmission gear 6 to rotate synchronously, thereby enabling the two screw guide sleeves 4 to achieve synchronous rotation.

[0029] like Figure 2 and Figure 4 As shown, the limiting mechanism includes two insert rods 14, and two L-shaped connecting plates 12 each have a square cavity. The inner walls of the two square cavities each have a sliding hole. The two insert rods 14 are slidably installed in the four sliding holes respectively. A rectangular plate 15 is fixedly sleeved on each of the two insert rods 14. A compression spring 16 is sleeved on the outer periphery of each of the two insert rods 14. Two slots are opened on the outer periphery of the discharge cylinder 10. The two slots are respectively adapted to the two insert rods 14. Specifically, one end of the compression spring 16 is fixedly installed on the side of the rectangular plate 15, and the other end of the compression spring 16 is fixedly installed on the inner side wall of the square cavity.

[0030] When the two L-shaped connecting plates 12 move downwards synchronously, they can drive the two insert rods 14 to move synchronously. When the inclined surface of the insert rod 14 contacts the inner wall of the drying cylinder 1, it can drive the insert rod 14 to move horizontally through the squeezing action, thereby realizing the insertion function with the slot on the outer wall of the feeding cylinder 10.

[0031] like Figure 2 and Figure 5 As shown, the circulation mechanism includes a rotating shaft 18, a transmission cavity is provided inside the cylinder cover 3, the top end of the rotating shaft 18 is rotatably mounted on the top inner wall of the transmission cavity, and a drive motor 20 is fixedly mounted on the top end of the cylinder cover 3. Specifically, the drive motor 20 can be controlled by a PLC controller. The output shaft of the drive motor 20 is connected to the top end of the rotating shaft 18, the bottom end of the rotating shaft 18 extends into the circulation cylinder 17, and a lifting auger 19 is fixedly mounted on the outer periphery of the rotating shaft 18. Two discharge holes are provided on the outer periphery of the circulation cylinder 17.

[0032] In this embodiment, the drive motor 20 is started to drive the rotating shaft 18 and the lifting auger 19 to rotate. Then, through the action of the lifting auger 19, the coffee beans at the bottom move upward in the circulation drum 17 until they are discharged at the two discharge holes and fall above the discharge drum 10, thus realizing the circulation function and improving the uniform drying effect of the coffee beans.

[0033] like Figure 2 and Figure 5 As shown, the stirring mechanism includes two stirring shafts 21. The top ends of the two stirring shafts 21 are rotatably mounted on the top inner wall of the transmission cavity, and the bottom ends of the two stirring shafts 21 extend to the outside of the cylinder cover 3. Multiple stirring rods are evenly arranged on the outer periphery of the two stirring shafts 21.

[0034] In this embodiment, when the stirring shaft 21 rotates, it can drive multiple stirring rods to rotate synchronously, thereby stirring the coffee beans and improving the drying rate.

[0035] like Figure 2 and Figure 5 As shown, a large gear 22 is fixedly sleeved on the outer wall of the rotating shaft 18, and a small gear 23 is fixedly sleeved on the outer wall of the two stirring shafts 21. Both small gears 23 are meshed with the large gear 22.

[0036] In this embodiment, when the rotating shaft 18 rotates, it can drive the large gear 22 to rotate, and then through the meshing action with the two small gears 23, it can drive the two small gears 23 to achieve the rotation function, thereby achieving the stirring effect of coffee beans.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A coffee bean drying apparatus, comprising a drying cylinder (1) and a feeding cylinder (10), characterized in that: A cylinder cover (3) is movably installed above the drying cylinder (1). The drying cylinder (1) and the cylinder cover (3) are connected by a lifting mechanism. Two L-shaped connecting plates (12) are fixedly installed at the bottom of the cylinder cover (3). A placement plate (11) is fixedly installed on the inner top wall of the two L-shaped connecting plates (12). The discharge cylinder (10) is set on the top of the placement plate (11) by a limiting mechanism. A circulation cylinder (17) is fixedly installed at the bottom of the cylinder cover (3). A circulation mechanism is provided inside the circulation cylinder (17). A stirring mechanism is provided at the bottom of the cylinder cover (3). The stirring mechanism is used to stir the material in the discharge cylinder (10).

2. The coffee bean drying apparatus according to claim 1, characterized in that: The lifting mechanism includes two screw guide sleeves (4). Four mounting blocks (5) are fixedly installed on the outer periphery of the drying cylinder (1). The two screw guide sleeves (4) are rotatably installed on the four mounting blocks (5). A lifting motor (8) is fixedly installed at the bottom of one of the mounting blocks (5). The output shaft of the lifting motor (8) is connected to the bottom end of one of the screw guide sleeves (4). Screws (9) are threadedly installed inside both screw guide sleeves (4). A lifting ring (2) is fixedly installed at the top of both screws (9). The lifting ring (2) is connected to the cylinder cover (3) by bolts.

3. The coffee bean drying apparatus according to claim 2, characterized in that: The lifting mechanism also includes two transmission gears (6), which are respectively fixedly sleeved on the two screw guide sleeves (4). The outer wall of the drying cylinder (1) is provided with an annular groove, and an annular rack (7) that meshes with the two transmission gears (6) is rotatably installed in the annular groove.

4. The coffee bean drying apparatus according to claim 1, characterized in that: The limiting mechanism includes two insert rods (14), each of the two L-shaped connecting plates (12) has a square cavity, and each of the two square cavities has a sliding hole on its opposite inner wall. The two insert rods (14) are slidably installed in the four sliding holes respectively. Each of the two insert rods (14) is fixedly sleeved with a rectangular plate (15). Each of the two insert rods (14) has a compression spring (16) sleeved on its peripheral outer wall. The peripheral outer wall of the discharge cylinder (10) has two slots, and the two slots are respectively adapted to the two insert rods (14).

5. The coffee bean drying apparatus according to claim 1, characterized in that: The circulation mechanism includes a rotating shaft (18), a transmission cavity is provided inside the cylinder cover (3), the top end of the rotating shaft (18) is rotatably installed on the top inner wall of the transmission cavity, a drive motor (20) is fixedly installed on the top end of the cylinder cover (3), the output shaft of the drive motor (20) is connected to the top end of the rotating shaft (18), the bottom end of the rotating shaft (18) extends into the circulation cylinder (17), a lifting auger (19) is fixedly installed on the outer wall of the rotating shaft (18), and two discharge holes are provided on the outer wall of the circulation cylinder (17).

6. A coffee bean drying apparatus according to claim 5, characterized in that: The stirring mechanism includes two stirring shafts (21), the top ends of the two stirring shafts (21) are rotatably mounted on the top inner wall of the transmission cavity, the bottom ends of the two stirring shafts (21) extend to the outside of the cylinder cover (3), and multiple stirring rods are evenly arranged on the peripheral outer wall of the two stirring shafts (21).

7. A coffee bean drying apparatus according to claim 6, characterized in that: A large gear (22) is fixedly sleeved on the outer wall of the rotating shaft (18), and a small gear (23) is fixedly sleeved on the outer wall of the two stirring shafts (21). Both small gears (23) are meshed with the large gear (22).

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