A coffee bean stoner

By combining a double-layer sieve plate and a blowing assembly, the problems of low sieving efficiency and inconvenient cleaning of existing coffee bean destoners are solved, realizing an automated and efficient destone removal process.

CN224389341UActive Publication Date: 2026-06-23WANNING XINGLONG SHANLIREN AGRICULTURE CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WANNING XINGLONG SHANLIREN AGRICULTURE CO LTD
Filing Date
2025-07-18
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Existing coffee bean destoners suffer from low screening efficiency and the need for manual intervention to remove stones.

Method used

It adopts a double-layer screening plate and blowing assembly, combined with a vibration motor and buffer assembly. The screening plate intercepts large stones, and the wind power separates coffee beans and stones. The stones are automatically cleaned up, and further separation is carried out through the discharge bin and stone removal box.

Benefits of technology

It improves screening and cleaning efficiency, reduces manual intervention, and realizes an automated destone removal process.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model provides a coffee bean destoner, including a screening box and a destoner. The screening box has a vibration assembly at its bottom, comprising a base plate one and a base plate two. Multiple vibration motors are mounted on the bottom of base plate one. The vibration assembly also includes multiple buffer components installed between base plate one and base plate two. An integrated discharge hopper is located at the bottom of the screening box, penetrating both base plate one and base plate two. This utility model offers the following advantages: the screening box first screens the coffee beans after they are placed inside, and the buffer components and vibration motors work together to separate larger stones mixed in with the coffee beans. Smaller coffee beans fall through the sieve holes of the screening plate. The double-layered screening plate further intercepts larger stones, facilitating subsequent destone removal. The screened coffee beans are discharged into the destoner through the discharge hopper, and then destoned using a blowing assembly, thereby further improving the machine's efficiency.
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Description

Technical Field

[0001] This utility model relates to a destoner for coffee beans, belonging to the field of coffee beans. Background Technology

[0002] Coffee, one of the world's three major beverages, has a particularly strong bitter taste that stimulates the central nervous system, heart, and respiratory system. Moderate consumption can also relieve muscle fatigue and promote the secretion of digestive juices. Because it promotes kidney function and has a diuretic effect, helping the body excrete excess sodium ions, it is widely loved by consumers.

[0003] However, coffee bean destonening plays a crucial role in the coffee production process. For example, a coffee bean destoner described in patent number CN202421361294.6 uses a sieve plate and a vibrating motor. Coffee beans are fed into the inlet, and an external power source powers the motor, causing the inlet to vibrate. An elastic mechanism follows the vibration, sieving out larger stones mixed in with the coffee beans. The coffee beans then pass through a rubber channel into a primary air classifier, thus removing these larger stones and facilitating subsequent destonening. The primary and secondary air classifiers complete the subsequent destonening process.

[0004] However, this patent only has a single vibration screening operation, which can intercept and screen large stones. Therefore, it has the problem of low screening efficiency. In addition, the intercepted stones remain on the screening plate, and manual cleaning is required afterward, which increases the labor force. Therefore, this utility model proposes a double-layer screening destoner for coffee beans. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a destoner for coffee beans.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0007] A coffee bean destoner includes a sieving box and a destoner. The bottom of the sieving box is equipped with a vibration assembly, which includes a base plate 1 and a base plate 2. Multiple vibration motors are installed at the bottom of the base plate 1. The vibration assembly also includes multiple buffer components installed between the base plate 1 and the base plate 2. The bottom of the sieving box is equipped with an integrated discharge hopper that passes through the base plate 1 and the base plate 2, and the bottom of the discharge hopper extends into the top of the destoner. A double-layer sieving plate is installed inside the sieving box. A cleaning assembly for cleaning the sieving plate is provided on the sieving box. The interior of the destoner is divided into a stone separation space and a coffee bean separation space. A blower assembly is embedded on the side of the destoner facing the stone separation space.

[0008] Furthermore, the buffer assembly includes a buffer spring, and mounting plates are fixedly provided at both the top and bottom ends of the buffer spring. The mounting plates are fixed to the base plate one and the base plate two with screws.

[0009] Furthermore, each screening plate is fixedly provided with a mounting plate at one end. The screening plate is inserted into the screening box and the mounting plate is attached to the outer wall of the screening box and fixed with screws.

[0010] Furthermore, a support groove is provided at the bottom edge of the screening plate away from the mounting plate, and a support plate is fixedly provided on the inner wall of the screening box, with the support plate inserted into the support groove.

[0011] Furthermore, the cleaning assembly includes a fixed frame fixed to the outer wall of the screening box, an electric push rod fixed on the fixed frame, a push plate connected to the output end of the electric push rod, two scrapers in contact with the top of the screening plate inside the screening box, and a sealing plate fixed on each scraper by a thin rod, a discharge window opened on the screening box, the sealing plate located inside the discharge window, and a discharge frame corresponding to the discharge window fixed on the outer wall of the screening box.

[0012] Furthermore, the blowing assembly includes an air inlet frame mounted on the destone box, with multiple fans with blades installed inside the air inlet frame in conjunction with a bracket, and a limiting frame inside the destone box with a limiting mesh, dividing the destone box into a stone separation space and a coffee bean separation space in conjunction with the limiting frame.

[0013] Furthermore, the limiting frame is fixed to the bottom outer wall of the discharge hopper with screws, and a protective frame is fixed to the outside of the air inlet frame with screws. The protective frame has a protective net. The stone destoning box is fixed with inclined stone and coffee bean racks. The stone destoning box has a box door.

[0014] The beneficial effects of this utility model are:

[0015] The coffee beans are first sieved in the sieve box, and the buffer component and its vibration motor separate the larger stones mixed in with the coffee beans. The smaller coffee beans fall through the sieve holes of the sieve plate, and the double-layer sieve plate can better intercept the large stones, which is convenient for the subsequent stone removal process.

[0016] By setting up the cleaning component, large stones intercepted on the screening plate are cleaned up and uniformly removed from the screening box without the need for manual cleaning, greatly improving cleaning efficiency.

[0017] The sieved coffee beans are fed into the stone box through the discharge hopper, and then the blower assembly performs the subsequent stone removal process, thereby further improving the working efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a front view of a coffee bean destoner according to the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of the screening box of a coffee bean destoner according to the present invention.

[0021] Figure 3 This is a schematic diagram of the interior of the destone box of a coffee bean destoner according to the present invention;

[0022] Figure 4 This is a schematic diagram of the limiting frame of a coffee bean destoner according to the present invention.

[0023] In the diagram: 1. Screening box; 2. Destoning box; 3. Bottom plate one; 4. Bottom plate two; 5. Discharge bin; 6. Screening plate; 7. Vibrating motor; 8. Stone separation space; 9. Coffee bean separation space; 10. Buffer spring; 11. Mounting round plate; 12. Mounting plate; 13. Support plate; 14. Fixing frame; 15. Electric push rod; 16. Sealing plate; 17. Push plate; 18. Scraper; 19. Fixing rod; 20. Discharge window; 21. Discharge frame; 22. Air inlet frame; 23. Fan; 24. Limiting frame; 26. Protective frame; 27. Stone discharge plate; 28. Coffee bean discharge plate; 29. ​​Box door. Detailed Implementation

[0024] 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.

[0025] Please see Figure 1-4This utility model provides a destoner for coffee beans, including a screening box 1 and a destoner 2. The screening box 1 is equipped with a vibration component at the bottom, which includes a base plate 3 and a base plate 4. Multiple vibration motors 7 are installed at the bottom of the base plate 3. The vibration component also includes multiple buffer components installed between the base plate 3 and the base plate 4. The screening box 1 is equipped with an integrated discharge chamber 5 at the bottom, which passes through the base plate 3 and the base plate 4, and the bottom of the discharge chamber 5 extends into the top of the destoner 2. A double-layer screening plate 6 is installed inside the screening box 1. A cleaning component for cleaning the screening plate 6 is provided on the screening box 1. The destoner 2 is divided into a stone separation space 8 and a coffee bean separation space 9. A blowing component is embedded on the side of the destoner 2 facing the stone separation space 8.

[0026] See Figure 1 The buffer assembly includes a buffer spring 10. The top and bottom ends of the buffer spring 10 are fixed with mounting round plates 11. The mounting round plates 11 are fixed to the bottom plate 3 and the bottom plate 4 with screws. The number of buffer springs 10 is set according to the actual situation to realize the vibrating screen box 1 and complete the subsequent screening work.

[0027] See Figure 1-2 Each screening plate 6 has a mounting plate 12 fixed at one end. The screening plate 6 is inserted into the screening box 1, and the mounting plate 12 is attached to the outer wall of the screening box 1 and fixed with screws. The bottom side of the screening plate 6 away from the mounting plate 12 has a support groove. A support plate 13 is fixed to the inner wall of the screening box 1. The support plate 13 is inserted into the support groove, and the screening plate 6 is inserted into the screening box 1. Then the mounting plate 12 is attached to the outer wall of the screening box 1 and fixed with screws. The screening plate 6 can be disassembled and installed, and subsequent replacement is convenient. After the screening plate 6 is inserted into the screening box 1, the other end of the screening plate 6 is supported by the support plate 13.

[0028] See Figure 1-2 The cleaning assembly includes a fixed frame 14 fixed to the outer wall of the screening box 1, an electric push rod 15 fixed on the fixed frame 14, and a push plate 17 connected to the output end of the electric push rod 15. A scraper 18 is provided inside the screening box 1, which contacts the top of the screening plate 6. A fixed rod 19 is fixed between the scraper 18 and the push plate 17. There are two scrapers 18, and a sealing plate 16 is fixed on each scraper 18 by a thin rod. A discharge window 20 is provided on the screening box 1. The sealing plate 16 is located inside the discharge window 20. A discharge frame 21 corresponding to the discharge window 20 is also fixed on the outer wall of the screening box 1. The electric push rod 15 pushes the push plate 17 and the scraper 18 to scrape the stones on the screening plate 6. The sealing plate 16 no longer blocks the discharge window 20. Therefore, the stones are discharged through the discharge window 20 and the discharge frame 21, and can be discharged into an external receiving box.

[0029] See Figure 1 and Figure 3 and Figure 4 The blowing assembly includes an air inlet frame 22 mounted on the destoning box 2. Multiple fans 23 with blades are installed inside the air inlet frame 22 with a bracket. A limiting frame 24 with a limiting mesh is installed inside the destoning box 2. The destoning box 2 is divided into a stone separation space 8 and a coffee bean separation space 9 by the limiting frame 24. The limiting frame 24 is fixed to the bottom outer wall of the discharge hopper 5 with screws. A protective frame 26 with a protective mesh is fixed to the outside of the air inlet frame 22 with screws. An inclined stone rack 27 and a coffee bean rack 28 are fixed inside the destoning box 2. The destoning box 2 has a door 29, through which the stones and coffee beans enter. Simultaneously, the fan blades are activated, blowing air through them. As the coffee beans fall, the airflow propels them towards the limiting frame 24, causing them to fall onto the coffee bean tray and slide downwards along its inclined direction, thus discharging the beans. The pebbles in the coffee beans, being heavier, are not blown away by the airflow and fall almost vertically, eventually landing on the pebble tray and sliding downwards along its inclined direction, thus being discharged. During this process, a detachable limiting frame and limiting net are installed to control the falling coffee beans, preventing them from flying too far due to excessive airflow and facilitating their collection.

[0030] In use, the coffee beans are first screened in the screening box 1, and the buffer component and its vibration motor 7 separate larger stones mixed in with the coffee beans. Smaller coffee beans fall through the screen holes of the screening plate 6. The double-layered screening plate 6 better intercepts large stones, facilitating subsequent stone removal. The cleaning component cleans the large stones intercepted on the screening plate 6 and removes them uniformly from the screening box 1 without manual cleaning, greatly improving cleaning efficiency. The screened coffee beans are discharged into the stone box 2 through the discharge bin 5, and then the blower component performs subsequent stone removal, further improving the working efficiency. The screen hole diameters on the double-layered screening plate 6 are not consistent, thus achieving a dual-stage stone screening effect.

[0031] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A coffee bean destoner, characterized in that, The screen includes a screening box (1) and a destone box (2). The bottom of the screening box (1) is equipped with a vibration assembly, which includes a bottom plate (3) and a bottom plate (4). Multiple vibration motors (7) are installed at the bottom of the bottom plate (3). The vibration assembly also includes multiple buffer components installed between the bottom plate (3) and the bottom plate (4). The bottom of the screening box (1) is equipped with an integrated discharge bin (5). The discharge bin (5) passes through the bottom plate (3) and the bottom plate (4), and the bottom of the discharge bin (5) penetrates into the top of the destone box (2). A double-layer screening plate (6) is installed inside the screening box (1). A cleaning assembly for cleaning the screening plate (6) is provided on the screening box (1). The interior of the destone box (2) is divided into a stone separation space (8) and a coffee bean separation space (9). The destone box (2) is equipped with a blower on the side facing the stone separation space (8).

2. A coffee bean destoner according to claim 1, characterized in that, The buffer assembly includes a buffer spring (10), and a mounting plate (11) is fixedly provided at both the top and bottom of the buffer spring (10). The mounting plate (11) is fixed to the base plate one (3) and the base plate two (4) with screws.

3. A coffee bean destoner according to claim 2, characterized in that, One end of each screening plate (6) is fixedly provided with an mounting plate (12). The screening plate (6) is inserted into the screening box (1), and the mounting plate (12) fits against the outer wall of the screening box (1) and is fixed with screws.

4. A coffee bean destoner according to claim 3, characterized in that, A support groove is provided on the bottom side of the screening plate (6) away from the mounting plate (12), and a support plate (13) is fixedly provided on the inner wall of the screening box (1), with the support plate (13) inserted into the support groove.

5. A coffee bean destoner according to claim 4, characterized in that, The cleaning assembly includes a fixed frame (14) fixed on the outer wall of the screening box (1), an electric push rod (15) fixed on the fixed frame (14), a push plate (17) connected to the output end of the electric push rod (15), a scraper (18) in contact with the top of the screening plate (6) is provided inside the screening box (1), and a fixed rod (19) is fixed between the scraper (18) and the push plate (17).

6. A coffee bean destoner according to claim 5, characterized in that, There are two scrapers (18), and each scraper (18) is fixed with a sealing plate (16) by a thin rod. The screening box (1) is provided with a discharge window (20), the sealing plate (16) is located inside the discharge window (20), and the outer wall of the screening box (1) is also fixed with a discharge frame (21) corresponding to the discharge window (20).

7. A coffee bean destoner according to claim 6, characterized in that, The blowing assembly includes an air intake frame (22) set on the destone box (2), and multiple fans (23) with blades are installed in the air intake frame (22) with a bracket. A limiting frame (24) is installed in the destone box (2), and a limiting net is provided on the limiting frame. The destone box (2) is divided into a stone separation space (8) and a coffee bean separation space (9) in conjunction with the limiting frame (24).

8. A coffee bean destoner according to claim 7, characterized in that, The limiting frame (24) is fixed to the bottom outer wall of the discharge bin (5) with screws. The outer side of the air inlet frame (22) is fixed with screws and a protective frame (26) is provided. The protective frame (26) has a protective net. The stone desink (2) is fixed with an inclined stone plate (27) and a coffee bean plate (28). The stone desink (2) has a door (29).