Coffee huller and grader

Abstract

The utility model provides a coffee hulling and screening machine. The coffee hulling and screening machine comprises a screening box, a hulling machine fixedly installed on the screening box, an inlet hopper and a discharge hopper provided on the hulling machine, the discharge hopper being correspondingly provided with the screening box and used for discharging coffee beans processed by the hulling machine into the screening box, a limiting groove provided in the screening box, a screening frame slidably installed in the screening box and slidably embedded in the limiting groove, the screening frame being correspondingly provided with the discharge hopper, one side of the screening frame being provided with an opening, and a reciprocating mechanism provided on the screening frame and used for driving the screening frame to vibrate and screen impurities. The coffee hulling and screening machine provided by the utility model has the advantages of being capable of improving the coffee hulling efficiency, helping to separate the coffee bean shells and impurities, and improving the production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of coffee production technology, and in particular to a coffee hulling and sorting machine. Background Technology

[0002] Coffee beans refer to the fresh fruit of the plant used to make coffee. After the coffee fruit is picked from the coffee tree, it first needs to go through many processes such as peeling, degumming, drying, storage, shelling, and polishing. After roasting, it becomes the coffee beans that we can buy in the market.

[0003] However, even after hulling, some coffee bean shells or impurities remain mixed with the beans and are difficult to separate. Traditionally, coffee bean sorting operations typically require two or more pieces of equipment. This not only prolongs processing time and reduces efficiency but also increases the workload for operators, consuming significant human and material resources.

[0004] Therefore, it is necessary to provide a new coffee hulling and sorting machine to solve the above-mentioned technical problems. Utility Model Content

[0005] To address the technical problem of impurities mixed in with hulled coffee beans, which are difficult to separate and affect the efficiency of coffee production and processing, this utility model provides a coffee hulling and screening machine.

[0006] The coffee hulling and sorting machine provided by this utility model includes: a sorting box; a hulling machine, which is fixedly installed on the sorting box, and is provided with a feed hopper and a discharge hopper, the discharge hopper being correspondingly arranged with the sorting box for discharging coffee beans processed by the hulling machine into the sorting box; a limiting groove, which is formed inside the sorting box; a screening frame, which is slidably installed in the sorting box and slidably embedded in the limiting groove, the screening frame being correspondingly arranged with the discharge hopper, one side of the screening frame being an opening, and a reciprocating mechanism being provided on the screening frame for driving the screening frame to vibrate and screen impurities; and a guide hopper, which is fixedly installed at the bottom of the sorting box, and the other end of the guide hopper being provided with a collecting mechanism for collecting coffee shells and impurities.

[0007] Preferably, the reciprocating mechanism includes a push rod, a docking plate, a reciprocating motor, a cam, a limiting rod, and a return spring. The push rod is fixedly installed on the screening frame and extends slidably outside the screening box. The docking plate is fixedly installed on the push rod. The reciprocating motor is fixedly installed on the screening box. The cam is fixedly installed on the output shaft of the reciprocating motor and slides in contact with the docking plate. The limiting rod is fixedly installed on the screening box and slides through the docking plate. The return spring is sleeved on the limiting rod, and one end of the return spring is fixedly installed on the screening box.

[0008] Preferably, the collection mechanism includes an impurity box, a fan, a connecting pipe, and a suction pipe. The impurity box is fixedly installed at the other end of the guide hopper, the fan is fixedly installed on the impurity box, the connecting pipe is fixedly installed at the air inlet of the fan, and the suction pipe is fixedly installed at the other end of the connecting pipe. The suction pipe is fixedly installed on the impurity box and is used to suck up the impurities screened out at the bottom of the screening box.

[0009] Preferably, a guide plate is fixedly installed inside the screening box, and the guide plate is correspondingly arranged with the opening end of the guide hopper, so as to guide the wind force generated by the fan to suck impurities into the guide hopper.

[0010] Preferably, the bottom inner wall of the screening box is inclined, and the lowest point of the screening box is located on one side of the guide hopper.

[0011] Preferably, a feeding hopper is fixedly installed at the bottom of the screening box, and a collection box is fixedly installed at the other end of the feeding hopper. The collection box is used to collect the screened coffee beans.

[0012] Preferably, the collecting box is configured as a funnel shape that is wider at the top and narrower at the bottom. An auger is rotatably installed at the lower end of the collecting box. A drive motor is fixedly installed on the collecting box. The output shaft of the drive motor is fixedly connected to the auger. A discharge port is opened on the collecting box. A discharge hopper is fixedly installed on the collecting box. The discharge hopper is correspondingly arranged with the discharge port.

[0013] Compared with related technologies, the coffee hulling and sorting machine provided by this utility model has the following beneficial effects:

[0014] This utility model provides a coffee dehulling and sorting machine:

[0015] 1. By fixing the hulling machine to the screening box, the hulling and screening functions are integrated. After the coffee beans are hulled, they go directly into the screening box, eliminating the transfer link, shortening the processing flow, improving overall efficiency, and reducing the consumption of manpower and material resources.

[0016] 2. The limiting groove inside the screening box provides limiting guidance for the screening frame, ensuring its stable sliding; the reciprocating mechanism converts the motor rotation into the reciprocating vibration of the screening frame, which can separate impurities more efficiently and thoroughly than the traditional method, improving the purity and quality of coffee beans.

[0017] 3. In the collection mechanism, the inclined bottom wall of the screening box works in conjunction with the guide plate. Under the suction of the fan, impurities quickly slide towards and enter the guide hopper, and are finally collected in the impurity box, reducing residue, maintaining a clean environment, and improving the level of automation. The feeding hopper and funnel-shaped collection box allow coffee beans to be collected naturally and smoothly, reducing spillage and waste; the auger, driven by the motor, evenly and stably pushes the coffee beans to the discharge port, and can also break up clumps. Together with the discharge hopper, it ensures accurate and clean discharge, guaranteeing continuous and stable production. Attached Figure Description

[0018] Figure 1 A front sectional view of a preferred embodiment of the coffee hulling and sorting machine provided by this utility model;

[0019] Figure 2 A front sectional view of a preferred embodiment of the coffee hulling and sorting machine provided by this utility model;

[0020] Figure 3 for Figure 2 An enlarged structural diagram of part A shown in the figure;

[0021] Figure 4 for Figure 2 The diagram shows an enlarged view of part B.

[0022] The following are the labels in the diagram: 1. Screening box; 2. Dehulling machine; 3. Feed hopper; 4. Discharge hopper; 5. Limiting groove; 6. Screening frame; 7. Guide hopper; 8. Impurity box; 9. Fan; 10. Connecting pipe; 11. Suction pipe; 12. Guide plate; 13. Push rod; 14. Connecting plate; 15. Reciprocating motor; 16. Cam; 17. Limiting rod; 18. Return spring; 19. Discharge hopper; 20. Collection box; 21. Screw; 22. Drive motor; 23. Discharge port; 24. Outlet hopper. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please refer to the following: Figures 1-4 ,in, Figure 1 A front sectional view of a preferred embodiment of the coffee hulling and sorting machine provided by this utility model; Figure 2 A front sectional view of a preferred embodiment of the coffee hulling and sorting machine provided by this utility model; Figure 3 for Figure 2An enlarged structural diagram of part A shown in the figure; Figure 4 for Figure 2 The diagram shows an enlarged view of part B.

[0025] The coffee hulling and sorting machine includes: a sorting box 1; a hulling machine 2, which is fixedly installed on the sorting box 1, and is equipped with a feed hopper 3 and a discharge hopper 4, the discharge hopper 4 being correspondingly arranged with the sorting box 1 for discharging coffee beans processed by the hulling machine 2 into the sorting box 1; a limiting groove 5, which is formed inside the sorting box 1; a screening frame 6, which is slidably installed in the sorting box 1 and slidably embedded in the limiting groove 5, the screening frame 6 being correspondingly arranged with the discharge hopper 4, one side of the screening frame 6 being an opening, and a reciprocating mechanism being provided on the screening frame 6 for vibrating and screening impurities; and a guide hopper 7, which is fixedly installed at the bottom of the sorting box 1, and the other end of the guide hopper 7 being equipped with a collecting mechanism for collecting coffee husks and impurities. The sorting box 1 serves as the basic frame of the entire sorting equipment, providing installation and support space for other components and ensuring the stable operation of the sorting process. The hulling machine 2 and the screening box 1 integrate hulling and screening functions into one unit, avoiding the need for multiple devices in traditional operations. This significantly shortens coffee bean processing time, improves processing efficiency, reduces operator workload, and saves manpower and resources. The limiting groove 5 provides limiting and guiding for the screening frame 6, ensuring stable sliding within the screening box 1 and improving screening accuracy and stability. The reciprocating mechanism drives the screening frame 6 to vibrate, efficiently screening out the outer shells and impurities from the coffee beans, improving the purity and quality of the beans. The guide hopper 7 smoothly guides the screened coffee shells and impurities to the collection mechanism for unified processing, maintaining a clean screening environment and increasing the automation level of the entire screening process.

[0026] The reciprocating mechanism includes a push rod 13, a docking plate 14, a reciprocating motor 15, a cam 16, a limiting rod 17, and a return spring 18. The push rod 13 is fixedly mounted on the screening frame 6 and extends slidably to the outside of the screening box 1. The docking plate 14 is fixedly mounted on the push rod 13. The reciprocating motor 15 is fixedly mounted on the screening box 1. The cam 16 is fixedly mounted on the output shaft of the reciprocating motor 15 and slides in contact with the docking plate 14. The limiting rod 17 is fixedly mounted on the screening box 1 and slides through the docking plate 14. The return spring 18 is sleeved on the limiting rod 17, and one end of the return spring 18 is fixedly mounted on the screening box 1. The push rod 13, as a force transmission component, can accurately transmit external power to the screening frame 6, causing the screening frame 6 to move accordingly, ensuring the stability and effectiveness of power transmission. The increased contact area between the docking plate 14 and the cam 16 makes the pushing action of the cam 16 on the push rod 13 more stable and uniform, avoiding damage to the push rod 13 or uneven movement caused by excessive local force, thus improving the reliability and durability of the entire reciprocating mechanism. The reciprocating motor 15 is the power source for the entire reciprocating mechanism, providing continuous and stable power for the rotation of the cam 16. Its stable output characteristics ensure that the screening frame 6 can reciprocate at a predetermined frequency and amplitude, thereby achieving efficient screening of impurities in coffee beans. The cam 16, through its special contour shape, converts the rotational motion of the reciprocating motor 15 into the reciprocating linear motion of the docking plate 14, which in turn drives the push rod 13 and the screening frame 6 to reciprocate. The limiting rod 17 restricts the direction of movement of the docking plate 14, ensuring that the docking plate 14 can only reciprocate linearly along the direction of the limiting rod 17, preventing the docking plate 14 from shifting or wobbling during movement, thus ensuring the accuracy and stability of the screening frame 6's movement. After the cam 16 pushes the docking plate 14 to move, the return spring 18 can use its own elastic force to quickly return the docking plate 14 to its initial position, preparing for the next push of the cam 16, thus realizing the continuous reciprocating motion of the screening frame 6. At the same time, the return spring 18 can also play a buffering role, reducing the impact and vibration during the movement and extending the service life of the equipment.

[0027] The collection mechanism includes an impurity box 8, a fan 9, a connecting pipe 10, and a suction pipe 11. The impurity box 8 is fixedly installed at the other end of the guide hopper 7. The fan 9 is fixedly installed on the impurity box 8. The connecting pipe 10 is fixedly installed at the air inlet of the fan 9. The suction pipe 11 is fixedly installed at the other end of the connecting pipe 10 and is also fixedly installed on the impurity box 8. The suction pipe 11 is used to suck up impurities screened from the bottom of the screening box 1. The impurity box 8 provides a dedicated storage space for the collected coffee shells and impurities. Impurities separated from the screening box 1 can fall directly into the impurity box 8 along the guide hopper 7, achieving orderly collection of impurities, preventing them from scattering everywhere, maintaining the cleanliness of the entire processing environment, and facilitating subsequent unified processing of impurities. The fan 9 generates strong suction, providing power for impurity extraction. Through the operation of the fan 9, a negative pressure environment is formed within the system, causing adsorption force at the suction pipe 11, thereby smoothly sucking up the impurities from the bottom of the screening box 1, ensuring the efficiency and continuity of impurity collection. The connecting pipe 10 acts as a bridge connecting the fan 9 and the suction pipe 11. It can stably transmit the suction force generated by the fan 9 and transport impurities to the impurity box 8.

[0028] A guide plate 12 is fixedly installed inside the screening box 1. The guide plate 12 is correspondingly positioned to the opening end of the guide hopper 7, and is used to guide the airflow generated by the blower 9 to draw impurities into the guide hopper 7. The guide plate 12 can concentrate and guide the airflow generated by the blower 9 to the opening area of ​​the guide hopper 7, allowing the airflow to act more specifically on the impurities, enabling the impurities to move smoothly towards the guide hopper 7 under the action of the airflow, greatly improving the efficiency of impurities being drawn into the guide hopper 7 and reducing the residue of impurities in the screening box 1. The presence of the guide plate 12 can change the direction of airflow, making the airflow more uniform and concentrated towards the guide hopper 7. It can adjust the distribution of airflow, avoid airflow turbulence and ineffective diffusion, and ensure that each airflow can play its maximum role, thereby improving the impurity suction effect of the entire collection mechanism.

[0029] The bottom inner wall of the screening box 1 is inclined, and the lowest point of the screening box 1 is located on one side of the guide hopper 7. By making the bottom inner wall of the screening box 1 inclined, coffee shells and impurities that fall during the screening process can slide naturally downwards along the inclined surface under their own gravity, improving the efficiency and thoroughness of impurity collection and reducing impurity residue in the corners and other locations at the bottom of the screening box 1. Since the lowest point of the screening box 1 is located on one side of the guide hopper 7, impurities collected at the bottom of the screening box 1 will naturally flow towards the location of the guide hopper 7, providing convenient conditions for the subsequent suction of impurities by the blower 9. Impurities can enter the guide hopper 7 more smoothly and be collected into the impurity box 8, improving the working efficiency of the entire screening and collection system.

[0030] A hopper 19 is fixedly installed at the bottom of the screening box 1, and a collection box 20 is fixedly installed at the other end of the hopper 19. The collection box 20 is used to collect the screened coffee beans. The hopper 19 fixedly installed at the bottom of the screening box 1 allows the screened coffee beans to slide naturally and smoothly down the inclined surface of the hopper 19 using gravity. The collection box 20 is fixedly connected to the other end of the hopper 19, providing a collection channel and storage space for the screened coffee beans, preventing them from scattering during the fall and reducing waste and loss. At the same time, the collection box 20 can centrally collect the coffee beans, facilitating subsequent packaging, transportation, and further processing.

[0031] The collecting box 20 is designed in a funnel shape, wider at the top and narrower at the bottom. An auger 21 is rotatably mounted on the lower end of the collecting box 20. A drive motor 22 is fixedly mounted on the collecting box 20, and the output shaft of the drive motor 22 is fixedly connected to the auger 21. A discharge port 23 is opened on the collecting box 20, and a discharge hopper 24 is fixedly mounted on the collecting box 20, corresponding to the discharge port 23. The funnel-shaped design, wider at the top and narrower at the bottom, gives the collecting box 20 a large upper opening, allowing it to more easily and quickly collect coffee beans falling from the discharge hopper 19, reducing the risk of spillage and improving collection efficiency. The auger 21 is a spiral conveying device; its rotation pushes the coffee beans at the bottom of the collecting box 20 evenly and stably to the discharge port 23, ensuring the continuity and stability of the production process. During rotation, the spiral blades of the auger 21 stir and compress the coffee beans, effectively breaking up clumps and keeping them loose for easy discharge, improving the quality and efficiency of the output. The drive motor 22 provides a stable and reliable power source for the rotation of the auger 21. The design of using the drive motor 22 to drive the auger 21 enables automated control of the entire discharge process. The discharge port 23 provides a specific channel for the coffee beans to be discharged, while the discharge hopper 24 further guides and collects the discharged coffee beans, preventing them from splashing everywhere during the discharge process and improving the accuracy and cleanliness of the discharge.

[0032] It is worth noting that the circuits, electronic components, and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0033] The working principle of the coffee hulling and sorting machine provided by this utility model is as follows:

[0034] In operation, the coffee beans to be processed are fed into the hulling machine 2 through the feed hopper 3. After the hulling machine 2 is started, it hulls the coffee beans according to the preset program and parameters. The coffee beans processed by the hulling machine 2, along with the removed outer shells and other impurities, are discharged through the discharge hopper 4 and fall accurately into the corresponding screening frame 6 in the screening box 1, completing the initial hulling and conveying of the coffee beans.

[0035] The reciprocating motor 15 starts operating, and its output shaft drives the cam 16 to rotate. Since the cam 16 is in sliding contact with the docking plate 14, its unique profile continuously pushes the docking plate 14 to perform reciprocating linear motion as it rotates. The docking plate 14 is fixedly mounted on the push rod 13, which is connected to the screening frame 6. Therefore, the movement of the docking plate 14 is transmitted to the screening frame 6 through the push rod 13, causing the screening frame 6 to reciprocate within the limiting groove 5.

[0036] The reciprocating vibration of the sieve frame 6 causes relative movement between the coffee beans and impurities falling into it. Due to the differences in particle size and shape between the coffee beans and impurities, smaller impurities fall through the sieve holes on the sieve frame 6 during vibration, while larger qualified coffee beans remain inside the sieve frame 6, thus achieving the initial separation of coffee beans and impurities.

[0037] During the screening process, the bottom inner wall of the screening box 1 is inclined, with the lowest point located on one side of the guide hopper 7. A guide plate 12 is also installed inside the screening box 1. After the blower 9 starts, a negative pressure environment is created in the system consisting of the impurity box 8, connecting pipe 10, and suction pipe 11, generating strong suction. Impurities and some coffee shells screened from the screening frame 6 slide along the inclined inner wall of the bottom of the screening box 1 towards the guide hopper 7 under the combined action of their own gravity and the suction of the blower 9. The guide plate 12 concentrates and guides the airflow generated by the blower 9 to the opening area of ​​the guide hopper 7, making the airflow more targeted towards the impurities and further improving the efficiency of impurities being sucked into the guide hopper 7. The impurities enter the impurity box 8 through the guide hopper 7, achieving centralized collection of impurities for subsequent unified processing.

[0038] After being screened, the qualified coffee beans remaining in the screening frame 6 will gradually move to one side as the screening frame 6 vibrates, and eventually fall into the feed hopper 19 at the bottom of the screening box 1 through the opening of the screening frame 6. The feed hopper 19 uses gravity to allow the coffee beans to slide naturally and smoothly down the slope and into the collection box 20.

[0039] The collecting box 20 is designed in a funnel shape, wider at the top and narrower at the bottom, to more easily and quickly collect coffee beans falling from the hopper 19. When discharge is needed, the drive motor 22 starts, and its output shaft drives the auger 21 to rotate. The auger 21, acting as a screw conveyor, pushes the coffee beans at the bottom of the collecting box 20 evenly and stably to the discharge port 23. The discharge port 23 provides a specific channel for the coffee beans to be discharged, while the discharge hopper 24 further guides and gathers the discharged coffee beans, ensuring that the coffee beans are accurately and orderly discharged from the collecting box 20, facilitating subsequent packaging, transportation, and further processing.

[0040] Compared with related technologies, the coffee hulling and sorting machine provided by this utility model has the following beneficial effects:

[0041] This utility model provides a coffee hulling and sorting machine. By fixing the hulling machine to the sorting box, the hulling and sorting functions are integrated. After the coffee beans are hulled, they directly enter the sorting box, eliminating the transfer link, shortening the processing flow, improving overall efficiency, and reducing the consumption of manpower and material resources.

[0042] The limiting groove inside the screening box provides limiting guidance for the screening frame, ensuring its stable sliding; the reciprocating mechanism converts the motor rotation into the reciprocating vibration of the screening frame, which can separate impurities more efficiently and thoroughly than the traditional method, improving the purity and quality of coffee beans.

[0043] In the collection mechanism, the inclined bottom wall of the screening box works in conjunction with the guide plate. Under the suction of the fan, impurities quickly slide towards and enter the guide hopper, and are finally collected in the impurity box, reducing residue, maintaining a clean environment, and improving the level of automation. The feeding hopper and funnel-shaped collection box allow coffee beans to be collected naturally and smoothly, reducing spillage and waste; the auger, driven by a motor, evenly and stably pushes coffee beans to the discharge port, and can also break up clumps. Together with the discharge hopper, it ensures accurate and clean discharge, guaranteeing continuous and stable production.

[0044] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, those skilled in the art who understand the principle of the above utility model can clearly understand the specific details of its power mechanism, power supply system and control system.

[0045] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A coffee hulling and sorting machine, characterized in that, include: Screening box; A hulling machine is fixedly installed on the screening box. The hulling machine is equipped with a feed hopper and a discharge hopper. The discharge hopper is correspondingly arranged with the screening box and is used to discharge the coffee beans processed by the hulling machine into the screening box. A limiting groove is formed inside the screening box; A screening frame is slidably installed inside the screening box and slidably embedded in the limiting groove. The screening frame is correspondingly arranged with the discharge hopper. One side of the screening frame is set as an opening. A reciprocating mechanism is provided on the screening frame to drive the screening frame to vibrate and screen impurities. A guide hopper is fixedly installed at the bottom of the screening box, and a collection mechanism is provided at the other end of the guide hopper for collecting coffee shells and impurities.

2. The coffee hulling and sorting machine according to claim 1, characterized in that, The reciprocating mechanism includes a push rod, a docking plate, a reciprocating motor, a cam, a limit rod, and a return spring. The push rod is fixedly installed on the screening frame and extends slidably to the outside of the screening box. The docking plate is fixedly installed on the push rod. The reciprocating motor is fixedly installed on the screening box. The cam is fixedly installed on the output shaft of the reciprocating motor and slides in contact with the docking plate. The limit rod is fixedly installed on the screening box and slides through the docking plate. The return spring is sleeved on the limit rod, and one end of the return spring is fixedly installed on the screening box.

3. The coffee hulling and sorting machine according to claim 1, characterized in that, The collection mechanism includes an impurity box, a fan, a connecting pipe, and a suction pipe. The impurity box is fixedly installed at the other end of the guide hopper, the fan is fixedly installed on the impurity box, the connecting pipe is fixedly installed at the air inlet of the fan, and the suction pipe is fixedly installed at the other end of the connecting pipe. The suction pipe is fixedly installed on the impurity box and is used to suck up the impurities screened out at the bottom of the screening box.

4. The coffee hulling and sorting machine according to claim 1, characterized in that, A guide plate is fixedly installed inside the screening box. The guide plate is correspondingly set with the opening end of the guide hopper, and is used to guide the wind force generated by the fan to suck impurities into the guide hopper.

5. The coffee hulling and sorting machine according to claim 1, characterized in that, The bottom inner wall of the screening box is inclined, and the lowest point of the screening box is located on one side of the guide hopper.

6. The coffee hulling and sorting machine according to claim 1, characterized in that, A feeding hopper is fixedly installed at the bottom of the screening box, and a collection box is fixedly installed at the other end of the feeding hopper. The collection box is used to collect the screened coffee beans.

7. The coffee hulling and sorting machine according to claim 6, characterized in that, The collection box is configured as a funnel shape that is wider at the top and narrower at the bottom. An auger is rotatably installed at the lower end of the collection box. A drive motor is fixedly installed on the collection box. The output shaft of the drive motor is fixedly connected to the auger. The discharge port is opened on the collection box. A discharge hopper is fixedly installed on the collection box. The discharge hopper is arranged corresponding to the discharge port.

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