Coffee berry de-fruiting device

Abstract

The utility model relates to coffee production equipment technical field discloses coffee fruit impurity removing device, including base, the top fixed coupling of base has processing cylinder, the inner wall left side fixed coupling of processing cylinder has feeding block, the right side fixed coupling of feeding block has filter cylinder, the inner wall of filter cylinder is provided with push stir -frying subassembly, the outer wall of filter cylinder is provided with impurity cleaning subassembly, impurity cleaning subassembly is used for discharging the filtered impurity, the right side of processing cylinder is provided with coaxial differential mechanism. In the utility model, through starting servo motor, makes rotary column and front end gear and rear end gear synchronous rotation, and front end gear passes through filter gear no.

Description

Technical Field

[0001] This utility model relates to the technical field of coffee fruit production equipment, and in particular to a coffee fruit impurity removal device. Background Technology

[0002] Coffee cherry impurity removal devices are key equipment in the coffee processing industry used to separate coffee cherries from impurities. Their core function is to achieve preliminary purification of coffee cherries through mechanical transmission and physical sorting, providing high-quality raw materials for subsequent hulling and roasting processes. This device is used in coffee plantations, small and medium-sized processing plants, and large-scale production lines. Its performance directly affects the efficiency of coffee processing and the quality of the finished product. From a macro-process chain perspective, it is an important link connecting coffee harvesting and fine processing, and it needs to balance the multiple requirements of thorough impurity removal, control of fruit damage rate, and equipment operation stability.

[0003] Early coffee berry impurity removal devices had relatively simple structures, mainly consisting of a feeding hopper, a screening mechanism, and a transmission system. Impurities were removed through single screening or manual picking, resulting in low efficiency, high impurity residue rates, and high labor costs. With the development of mechanization technology, existing devices have gradually introduced differential drive principles, achieving frictional stripping and centrifugal sorting functions through the speed difference between the inner and outer shafts. For example, using gear transmission or belt transmission structures to drive the rotation of two shafts has significantly improved efficiency compared to earlier equipment. However, most existing devices still use eccentric shaft differential drive, which uses an eccentrically mounted transition wheel to adapt to the transmission requirements of gears with different radii. During operation, this structure is difficult to precisely control the speed difference due to the unstable center distance of gear meshing, and can only adapt to a single type of impurity, failing to meet the diverse sorting needs in complex scenarios. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a coffee fruit impurity removal device, which aims to improve the problem that the existing technology is unable to meet the diverse sorting needs in complex scenarios due to the unstable center distance of gear meshing, the difficulty in accurately controlling the speed difference of eccentric transmission, and the inability to adapt to a single type of impurity.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a coffee berry impurity removal device, comprising a base, a processing cylinder fixedly connected to the top of the base, a feeding block fixedly connected to the left side of the inner wall of the processing cylinder, a filter cylinder fixedly connected to the right side of the feeding block, a pushing and stirring assembly provided on the inner wall of the filter cylinder, an impurity cleaning assembly provided on the outer wall of the filter cylinder, the impurity cleaning assembly being used to discharge the filtered impurities, a coaxial differential speed mechanism provided on the right side of the processing cylinder, and a lifting and fixing mechanism provided on the inner wall of the base;

[0006] The coaxial differential mechanism includes a gearbox. The left side of the gearbox is fixedly connected to the right side of the processing cylinder. A servo motor is fixedly connected to the right side of the gearbox. The output end of the servo motor passes through the right side of the gearbox and is fixedly connected to a transmission column. A front gear is fixedly connected to the left side of the outer wall of the transmission column, and a rear gear is fixedly connected to the right side of the outer wall of the transmission column. A linkage gear is meshed with the outer wall of the rear gear. A first filter gear is meshed with the outer wall of the front gear. A second filter gear is fixedly connected to the right end of the first filter gear. A differential assembly is provided on the front side of the inner wall of the gearbox, and a lubrication assembly is provided on the top of the gearbox.

[0007] As a further description of the above technical solution:

[0008] The lifting and fixing mechanism includes a bidirectional screw, the left and right ends of which are rotatably connected to the middle of the inner wall of the base. The right end of the bidirectional screw passes through the right side of the base and is fixedly connected to a handle. The left and right sides of the outer wall of the bidirectional screw are threaded with movable plates. The bottom front and rear sides of the movable plates are rotatably connected with rotating plates. The bottom ends of the two rotating plates on the left and right sides are rotatably connected with support plates. The top left and right sides of the support plates are fixedly connected with limit rods.

[0009] As a further description of the above technical solution:

[0010] The pushing and stirring assembly includes a connecting main shaft, the right end of which is rotatably connected to the right end of the inner wall of the processing cylinder. A connecting rod is fixedly connected to the outer wall of the connecting main shaft. Multiple baffles are fixedly connected to the other ends of the multiple connecting rods. A spiral push plate is fixedly connected to the outer wall of the multiple baffles.

[0011] As a further description of the above technical solution:

[0012] The impurity cleaning assembly includes a linkage disc, the right side of which is rotatably connected to the right end of the inner wall of the processing cylinder. A circular plate is fixedly connected to the outer wall of the linkage disc, and an impurity pusher plate is fixedly connected to the left side of the circular plate. A discharge pipe is connected to the bottom left side of the feed block.

[0013] As a further description of the above technical solution:

[0014] The lubrication assembly includes a lubricating oil tank, the bottom of which is fixedly connected to the top of the gearbox. A plug is threaded onto the top of the lubricating oil tank. A connecting pipe is connected to the bottom of the lubricating oil tank, and the bottom of the connecting pipe passes through the top of the gearbox and is fixedly connected to an applicator sponge.

[0015] As a further description of the above technical solution:

[0016] The differential assembly includes a high-speed gear, the outer wall of which is meshed with the outer side of the filter gear 2, the outer wall of the linkage gear is meshed with a low-speed gear, and a hollow cylinder is fixedly connected to the left end of the high-speed gear.

[0017] As a further description of the above technical solution:

[0018] An observation window is fixedly connected to the front side of the processing cylinder, and a discharge arc plate is fixedly connected to the bottom right end of the processing cylinder. Universal wheels are rotatably connected to the four corners of the bottom of the base, and multiple anti-slip grooves are provided on the bottom of the support plate.

[0019] As a further description of the above technical solution:

[0020] The base has limit grooves on both the front and rear sides of the bottom inner wall, and the inner walls of the two limit grooves are slidably connected to the bottom of the corresponding moving plate.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, by starting the servo motor, the rotating column and the front and rear gears rotate synchronously. The front gear drives the high-speed gear to rotate through the first and second filter gears, which in turn drives the roasting component to run, performing spiral thrust and roasting on the coffee berries to achieve separation. The rear gear meshes with the linkage gear, driving the low-speed gear and the hollow cylinder to rotate, which causes the impurity cleaning component to run at low speed, pushing the impurities out of the device. By using coaxial differential transmission, spiral roasting and screening, and low-speed continuous impurity discharge, the efficiency of coffee berry impurity removal and the stability and ease of use of the equipment are improved.

[0023] 2. In this utility model, rotating the handle causes the bidirectional screw to rotate, which in turn causes the moving plate to move relative to the moving plate. The rotating plate then rotates, causing the support plate to rise until the caster wheel contacts the ground, facilitating movement. Once the designated position is reached, rotating the handle in the opposite direction causes the moving plate to move away from the moving plate. The rotating plate then rotates, causing the support plate to descend. The support device can also be height-adjusted, thus facilitating the movement and height adjustment of the device. Attached Figure Description

[0024] Figure 1 This is a perspective view of the coffee berry impurity removal device proposed in this utility model;

[0025] Figure 2 This is a front view of the coffee berry impurity removal device proposed in this utility model;

[0026] Figure 3 This is a cross-sectional view of the coffee berry impurity removal device proposed in this utility model;

[0027] Figure 4This is a cross-sectional view of the filter cylinder of the coffee berry impurity removal device proposed in this utility model;

[0028] Figure 5 This is a cross-sectional view of the gearbox of the coffee fruit impurity removal device proposed in this utility model.

[0029] Legend:

[0030] 1. Base; 2. Coaxial differential mechanism; 201. Gearbox; 202. Servo motor; 203. Transmission column; 204. Front gear; 205. Rear gear; 206. Filter gear one; 207. Filter gear two; 208. Differential assembly; 2081. High-speed gear; 2082. Low-speed gear; 2083. Hollow cylinder; 209. Linkage gear; 3. Lifting and fixing mechanism; 301. Bidirectional screw; 302. Handle; 303. Moving plate; 304. Rotating plate; 305. Support plate; 306. Limit rod ; 4. Processing cylinder; 5. Feeding block; 6. Filtering cylinder; 7. Pushing and stirring assembly; 701. Connecting main shaft; 702. Connecting rod; 703. Spiral push plate; 704. Baffle; 8. Impurity cleaning assembly; 801. Impurity push plate; 802. Circular ring plate; 803. Linkage plate; 804. Discharge pipe; 9. Lubrication assembly; 901. Lubricating oil tank; 902. Tank plug; 903. Coating sponge; 904. Connecting pipe; 10. Observation window; 11. Discharge arc plate; 12. Universal wheel; 13. Anti-slip groove; 14. Limiting groove. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0032] Reference Figure 3 , Figure 4 and Figure 5This utility model provides an embodiment of a coffee berry impurity removal device, comprising a base 1, a processing cylinder 4 fixedly connected to the top of the base 1, a feeding block 5 fixedly connected to the left side of the inner wall of the processing cylinder 4, a filter cylinder 6 fixedly connected to the right side of the feeding block 5, a pushing and stirring assembly 7 provided on the inner wall of the filter cylinder 6, and an impurity cleaning assembly 8 provided on the outer wall of the filter cylinder 6 for discharging the filtered impurities. A coaxial differential mechanism 2 is provided on the right side of the processing cylinder 4, and a lifting and fixing mechanism 3 is provided on the inner wall of the base 1; the coaxial differential mechanism 2 includes a gearbox 20. 1. The left side of the gearbox 201 is fixedly connected to the right side of the processing cylinder 4. A servo motor 202 is fixedly connected to the right side of the gearbox 201. The output end of the servo motor 202 passes through the right side of the gearbox 201 and is fixedly connected to a transmission column 203. A front gear 204 is fixedly connected to the left side of the outer wall of the transmission column 203, and a rear gear 205 is fixedly connected to the right side of the outer wall of the transmission column 203. The rear gear 205 meshes with the linkage gear 209, which drives the low-speed gear 2082 to rotate, and drives the hollow cylinder 2083 to rotate together, thereby driving the impurity cleaning... When the processing component 8 is running, the outer wall of the rear gear 205 is meshed with a linkage gear 209, and the outer wall of the front gear 204 is meshed with a filter gear 206. The right end of the filter gear 206 is fixedly connected to a filter gear 207. When the servo motor 202 is started, the transmission column 203 is driven to rotate, which causes the upper front gear 204 and the rear gear 205 to rotate synchronously. When the front gear 204 rotates, it meshes with the filter gear 206, driving the filter gear 206 and its fixedly connected filter gear 207 to rotate, which in turn drives the high-speed gear 208. 1 rotates, and the left side of the high-speed gear 2081 passes through the low-speed gear 2082 and is connected to the connecting main shaft 701, thereby causing the stirring component 7 to rotate at high speed. A differential component 208 is provided on the front side of the inner wall of the gearbox 201, and a lubrication component 9 is provided on the top of the gearbox 201. The differential component 208 includes a high-speed gear 2081, the outer wall of the high-speed gear 2081 is meshed with the outer side of the filter gear 207, the outer wall of the linkage gear 209 is meshed with the low-speed gear 2082, and a hollow cylinder 2083 is fixedly connected to the left end of the high-speed gear 2081.The stirring assembly 7 includes a connecting main shaft 701. The right end of the connecting main shaft 701 is rotatably connected to the right end of the inner wall of the processing cylinder 4. A connecting rod 702 is fixedly connected to the outer wall of the connecting main shaft 701. A plurality of baffles 704 are fixedly connected to the other end of each of the connecting rods 702. A spiral push plate 703 is fixedly connected to the outer wall of each of the baffles 704. The rotation of the connecting main shaft 701 will cause the connecting rods 702, baffles 704 and spiral push plates 703 above it to move synchronously, rotating with the connecting main shaft 701. At the same time, a spiral thrust is generated on the coffee cherries inside the filter cylinder 6, causing them to move slowly from left to right. The spiral pattern also provides a pushing effect, and the baffle 704 helps to stir and tumble the coffee cherries, thus ensuring thorough separation of the coffee cherries and impurities on the filter cylinder 6. The impurity cleaning assembly 8 includes a linkage disc 803, the right side of which is rotatably connected to the right end of the inner wall of the processing cylinder 4. A circular ring plate 802 is fixedly connected to the outer wall of the linkage disc 803, and an impurity cleaning device is fixedly connected to the left side of the circular ring plate 802. The pusher plate 801 and the bottom left side of the feed block 5 are connected to the discharge pipe 804. The hollow cylinder 2083 rotates together, and the rotation of the hollow cylinder 2083 will drive the linkage disc 803 to rotate at a low speed. The annular plate 802 on its outer wall and the impurity pusher plate 801 rotate synchronously, pushing the impurities separated from the filter cylinder 6 from right to left, and finally discharging them out of the device through the discharge pipe 804. The lubrication assembly 9 includes a lubricating oil tank 901, the bottom of which is fixedly connected to the gearbox 20. At the top of 1, the top of the lubricating oil tank 901 is threaded with a plug 902, and the bottom of the lubricating oil tank 901 is connected to a connecting pipe 904. The bottom of the connecting pipe 904 passes through the top of the gearbox 201 and is fixedly connected to an applicator sponge 903. The lubricating oil tank 901 in the lubrication assembly 9 contains lubricating oil, which is easily replenished through the plug 902. The lubricating oil will flow into the applicator sponge 903 through the connecting pipe 904, thereby applicating the gears in the gearbox 201 to ensure their smooth operation.

[0033] Specifically, the servo motor 202 is started, driving the transmission column 203 to rotate, which in turn causes the front gear 204 and the rear gear 205 to rotate synchronously. When the front gear 204 rotates, it meshes with the filter gear 206, driving the filter gear 206 and its fixedly connected filter gear 207 to rotate, which in turn drives the high-speed gear 2081 to rotate. The left side of the high-speed gear 2081 passes through the low-speed gear 2082 and is connected to the connecting main shaft 701, causing the connecting rod 702, baffle 704, and spiral push plate 703 above it to move synchronously. When the connecting main shaft 701 rotates, it generates a spiral thrust on the coffee berries inside the filter cylinder 6, causing them to move slowly from left to right. At the same time, the spiral pattern achieves a pushing effect, and the baffle 704 achieves a turning effect, thus ensuring that the coffee berries and impurities are fully separated on the filter cylinder 6. The rear gear 205 and the linkage gear... The gears 209 and 209 mesh together, driving the low-speed gear 2082 to rotate, which in turn drives the hollow cylinder 2083 to rotate. Simultaneously, the rotation of the hollow cylinder 2083 drives the linkage disc 803 to rotate at a low speed. The annular plate 802 and the impurity pusher plate 801 on its outer wall rotate synchronously, pushing the impurities separated from the filter cylinder 6 from right to left, and finally discharging them out of the device through the discharge pipe 804. By utilizing the synergistic design of coaxial differential transmission, spiral tumbling and screening, and low-speed continuous impurity discharge, the efficient removal of coffee fruit impurities is achieved. Compared with the traditional eccentric shaft structure, this significantly improves transmission stability, impurity removal efficiency, and ease of use. The lubrication component 9 contains lubricating oil in the lubrication tank 901, which can be easily replenished through the tank plug 902. The lubricating oil flows into the coating sponge 903 through the connecting pipe 904, thereby coating the gears in the gearbox 201 to ensure smooth operation.

[0034] Reference Figure 1 , Figure 2 and Figure 3The lifting and fixing mechanism 3 includes a bidirectional screw 301. The left and right ends of the bidirectional screw 301 are rotatably connected to the middle of the inner wall of the base 1. The right end of the bidirectional screw 301 passes through the right side of the base 1 and is fixedly connected to a handle 302. Moving plates 303 are threadedly connected to the left and right sides of the outer wall of the bidirectional screw 301. Rotating plates 304 are rotatably connected to the front and rear sides of the bottom of the moving plates 303. Support plates 305 are rotatably connected to the bottom ends of the two rotating plates 304 on the left and right sides. Rotating the handle 302 drives the bidirectional screw 301. 1. Rotation causes the outer movable plate 303 to move relative to each other, thereby driving the rotating plate 304 to rotate, which in turn drives the support plate 305 to move to the top until the caster 12 contacts the ground, thus facilitating its movement. Limiting rods 306 are fixedly connected to the top left and right sides of the support plate 305. Rotating the handle 302 in the opposite direction causes the outer movable plate 303 of the bidirectional screw 301 to move away from each other, thereby causing the rotating plate 304 to rotate, driving the support plate 305 to move to the bottom, thus supporting the entire device.

[0035] Specifically, when the device needs to be moved, simply turn the handle 302 to rotate the bidirectional screw 301, causing the outer movable plate 303 to move relative to it, which in turn causes the rotating plate 304 to rotate, and then causes the support plate 305 to move upward until the caster wheel 12 contacts the ground, thus facilitating its movement. When it is moved to the desired position, simply turn the handle 302 in the opposite direction to move the outer movable plate 303 of the bidirectional screw 301 away from it, which in turn causes the rotating plate 304 to rotate, causing the support plate 305 to move downward, thus supporting the entire device. The height of the entire device can be adjusted according to the required height.

[0036] Reference Figure 1 , Figure 2 and Figure 3 An observation window 10 is fixedly connected to the front side of the processing cylinder 4, which allows real-time observation of the sieving status of coffee cherries inside the processing cylinder 4. A discharge arc plate 11 is fixedly connected to the bottom right end of the processing cylinder 4, which guides qualified coffee cherries sieved by the filter cylinder 6 to be discharged smoothly. Universal wheels 12 are rotatably connected to the four corners of the bottom of the base 1, which facilitates position adjustment in the coffee processing area. Multiple anti-slip grooves 13 are provided on the bottom of the support plate 305, which increase the friction between the support plate 305 and the ground. Limiting grooves 14 are provided on the front and rear sides of the bottom of the inner wall of the base 1. The inner walls of the two limiting grooves 14 are slidably connected to the bottom of the corresponding moving plate 303. The limiting grooves 14 limit the movement trajectory of the moving plate 303, ensuring that the moving plate 303 moves only in a straight line in the horizontal direction under the drive of the bidirectional screw 301.

[0037] Specifically, the observation window 10 allows for real-time observation of the sieving status of coffee cherries inside the processing cylinder 4, the effect of impurity removal, and the equipment operation. The discharge arc plate 11 guides qualified coffee cherries sieved by the filter cylinder 6 to discharge smoothly, preventing material accumulation at the outlet. The arc structure also reduces collision damage between coffee cherries and the outlet edge, improving discharge smoothness. The casters 12 facilitate position adjustment within the coffee processing area to adapt to different production process layouts. The anti-slip groove 13 increases the friction between the support plate 305 and the ground. When the lifting and fixing mechanism 3 unfolds the support plate 305 to contact the ground, the anti-slip groove 13 effectively prevents displacement due to vibration during high-speed operation, improving equipment stability. The limiting groove 14 limits the movement trajectory of the moving plate 303, ensuring that the moving plate 303 moves only in a straight line in the horizontal direction under the drive of the bidirectional screw 301, avoiding deviation or tilting, thereby ensuring the adjustment accuracy and reliability of the lifting and fixing mechanism 3.

[0038] Working principle: First, the servo motor 202 is started, driving the transmission column 203 to rotate, which in turn causes the front gear 204 and the rear gear 205 to rotate synchronously. During the rotation of the front gear 204, through the meshing of the filter gear 206, the filter gear 206 and its fixedly connected filter gear 207 are driven to rotate, which in turn drives the high-speed gear 2081 to rotate. The left side of the high-speed gear 2081 passes through the low-speed gear 2082 and is connected to the connecting main shaft 701, causing the connecting rod 702, the baffle 704 and the spiral push plate 703 above it to move synchronously. As the connecting main shaft 701 rotates, a spiral thrust is applied to the coffee fruit in the filter cylinder 6, causing it to move slowly from left to right, and the spiral pattern achieves the pushing effect. Under the action of the filter cylinder 6, the coffee cherries are thoroughly separated from the impurities. The rear gear 205 meshes with the linkage gear 209, which drives the low-speed gear 2082 to rotate and the hollow cylinder 2083 to rotate together. The rotation of the hollow cylinder 2083 drives the linkage disc 803 to rotate at low speed. The annular plate 802 on its outer wall and the impurity pusher plate 801 rotate synchronously, pushing the impurities separated from the filter cylinder 6 from right to left and finally discharging them out of the device through the discharge pipe 804. Through the coordinated design of coaxial differential transmission, spiral stirring and screening and low-speed continuous impurity discharge, the efficient removal of coffee cherries and impurities is achieved. Compared with the traditional eccentric shaft structure, the transmission stability, impurity removal efficiency and equipment usability are significantly improved.

[0039] Furthermore, through the lifting and fixing mechanism 3, when the equipment needs to be moved, simply rotate the handle 302, which drives the bidirectional screw 301 to rotate, causing the outer moving plate 303 to move relative to the ground, thereby driving the rotating plate 304 to rotate, and then driving the support plate 305 to move upward until the caster wheel 12 contacts the ground, thus facilitating its movement. When it is moved to the desired position, simply rotate the handle 302 in the opposite direction, causing the outer moving plate 303 of the bidirectional screw 301 to move away from the ground, thereby driving the rotating plate 304 to rotate, and driving the support plate 305 to move downward, thus supporting the entire equipment. The height of the entire equipment can be adjusted according to the required height.

[0040] 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 berry impurity removal device, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a processing cylinder (4), the left side of the inner wall of the processing cylinder (4) is fixedly connected to a feeding block (5), the right side of the feeding block (5) is fixedly connected to a filter cylinder (6), the inner wall of the filter cylinder (6) is provided with a pushing and stirring component (7), the outer wall of the filter cylinder (6) is provided with an impurity cleaning component (8), the impurity cleaning component (8) is used to discharge the filtered impurities, the right side of the processing cylinder (4) is provided with a coaxial differential mechanism (2), and the inner wall of the base (1) is provided with a lifting and fixing mechanism (3). The coaxial differential mechanism (2) includes a gearbox (201). The left side of the gearbox (201) is fixedly connected to the right side of the processing cylinder (4). A servo motor (202) is fixedly connected to the right side of the gearbox (201). The output end of the servo motor (202) passes through the right side of the gearbox (201) and is fixedly connected to a transmission column (203). A front gear (204) is fixedly connected to the left side of the outer wall of the transmission column (203). 3) A rear gear (205) is fixedly connected to the right side of the outer wall. A linkage gear (209) is meshed with the outer wall of the rear gear (205). A filter gear (206) is meshed with the outer wall of the front gear (204). A filter gear (207) is fixedly connected to the right end of the filter gear (206). A differential assembly (208) is provided on the front side of the inner wall of the gearbox (201). A lubrication assembly (9) is provided on the top of the gearbox (201).

2. The coffee cherry impurity removal device according to claim 1, characterized in that: The lifting and fixing mechanism (3) includes a bidirectional screw (301). The left and right ends of the bidirectional screw (301) are rotatably connected to the middle of the inner wall of the base (1). The right end of the bidirectional screw (301) passes through the right side of the base (1) and is fixedly connected to a handle (302). The left and right sides of the outer wall of the bidirectional screw (301) are threadedly connected to a moving plate (303). The bottom front and rear sides of the moving plate (303) are rotatably connected to a rotating plate (304). The bottom ends of the two rotating plates (304) on the left and right sides are rotatably connected to a support plate (305). The top left and right sides of the support plate (305) are fixedly connected to a limit rod (306).

3. The coffee cherry impurity removal device according to claim 1, characterized in that: The pushing and stirring assembly (7) includes a connecting main shaft (701), the right end of which is rotatably connected to the right end of the inner wall of the processing cylinder (4), and a connecting rod (702) is fixedly connected to the outer wall of the connecting main shaft (701). The other end of each of the connecting rods (702) is fixedly connected to a plurality of baffles (704), and the outer wall of each of the baffles (704) is fixedly connected to a spiral push plate (703).

4. The coffee cherry impurity removal device according to claim 1, characterized in that: The impurity cleaning assembly (8) includes a linkage disc (803), the right side of which is rotatably connected to the right end of the inner wall of the processing cylinder (4), the outer wall of which is fixedly connected to a ring plate (802), the left side of which is fixedly connected to an impurity pusher plate (801), and the bottom left side of the feed block (5) is connected to a discharge pipe (804).

5. The coffee cherry impurity removal device according to claim 1, characterized in that: The lubrication assembly (9) includes a lubricating oil tank (901), the bottom end of which is fixedly connected to the top of the gearbox (201). A plug (902) is threadedly connected to the top of the lubricating oil tank (901). A connecting pipe (904) is connected to the bottom end of the lubricating oil tank (901). The bottom end of the connecting pipe (904) passes through the top of the gearbox (201) and is fixedly connected to an applicator sponge (903).

6. The coffee cherry impurity removal device according to claim 1, characterized in that: The differential assembly (208) includes a high-speed gear (2081), the outer wall of which is meshed with the outer side of the filter gear (207), the outer wall of the linkage gear (209) is meshed with a low-speed gear (2082), and a hollow cylinder (2083) is fixedly connected to the left end of the high-speed gear (2081).

7. The coffee berry impurity removal device according to claim 2, characterized in that: An observation window (10) is fixedly connected to the front side of the processing cylinder (4), and a discharge arc plate (11) is fixedly connected to the bottom right end of the processing cylinder (4). Universal wheels (12) are rotatably connected to the four corners of the bottom of the base (1), and multiple anti-slip grooves (13) are opened at the bottom of the support plate (305).

8. The coffee cherry impurity removal device according to claim 2, characterized in that: The base (1) has a limiting groove (14) on the front and back sides of the bottom of the inner wall, and the inner walls of the two limiting grooves (14) are slidably connected to the bottom of the corresponding moving plate (303).

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