Coffee bean gravity grading device

Abstract

The utility model discloses a gravity grading device for coffee beans. The gravity grading device comprises an air duct and a material smoothening plate, the coffee bean gravitational grading device has the advantages that the air outlet ring, the air suction cover, the air blower and the air extracting pump are adopted, when coffee beans are subjected to gravitational grading, the air extracting pump and the air blower are started at the same time, the air extracting pump extracts air in the air pipe and the air suction cover, and the bottom face of the air suction cover is in a negative pressure state; the air blower generates fast air flow, the fast air flow enters the air flow channel in the air outlet ring through the air conveying pipe and flows out in an accelerated mode through the air outlet, a fast air barrel is formed, according to the Bernoulli theorem, external air is supplemented from the bottom face of the air barrel to enter the air barrel and vertically and upwards flows fast, and therefore coffee beans with small gravity are vertically and upwards blown into the air suction cover. According to the gravity grading device, gravity grading is conducted through wind power, the grading efficiency is high, the structure is simple, the manufacturing cost is low, the coffee beans are not affected, and the gravity grading device is suitable for being used and popularized in a large range.

Description

Technical Field

[0001] This utility model relates to the field of coffee bean production and grading technology, specifically to a coffee bean gravity grading device. Background Technology

[0002] After being sieved, coffee beans need to undergo gravity grading to further select the higher-quality beans for sale. Traditional methods use gravity and air grading. The compressed air method is manual and requires high skill; it uses a jet to separate heavy and light coffee beans. The gravity method uses a weight separator, where coffee beans are placed in elevated plates and air is passed through them, causing the heavier beans to fall. This is also a more technically demanding method, and the production process is not continuous and less efficient, so further improvements are possible.

[0003] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a gravity grading device for coffee beans, which has the advantages of simple structure and high grading efficiency, thereby solving the problems mentioned in the background technology.

[0006] (II) Technical Solution

[0007] To achieve the advantages of simple structure and high grading efficiency mentioned above, the specific technical solution adopted by this utility model is as follows:

[0008] A gravity grading device for coffee beans includes a blower and a feed plate. The blower is fixedly mounted on the lower part of one end of the feed plate, and an air outlet ring is fixedly installed inside the blower. An airflow channel is opened inside the air outlet ring, and an air outlet is opened through the top surface of the airflow channel and the top surface of the air outlet ring. An air suction hood is fixedly mounted on the top of the blower, and an air duct is connected through the top surface of the air suction hood. An air suction pipe is connected through the other end of the air duct. A blower is fixedly mounted on the other side of the blower, and the air outlet of the blower is connected through the airflow channel via an air supply pipe. An air pump is fixedly mounted on the other side of the blower, and the air suction end of the air pump is connected through the other end of the air suction pipe. A feed cylinder is connected through the bottom surface of the other end of the air duct.

[0009] Furthermore, side plates are fixedly installed on both sides of the top surface of the feed plate, and a gantry is fixedly mounted on the top surface of the side plates. A handle screw is threaded through the top surface of the gantry, and a baffle is rotatably connected to the bottom surface of the handle screw through a rotating connector. The two sides of the baffle slide against the side plates.

[0010] Furthermore, the top surface of the air outlet ring is an inwardly inclined slope, and the top surface of the air outlet ring is polished.

[0011] Furthermore, the width of the air outlet is no more than 2mm, and the air outlet has an annular structure.

[0012] Furthermore, the bottom surface of the material cylinder is threaded with a bottom cover, and the bottom surface of the material cylinder has a funnel-shaped structure.

[0013] Furthermore, a perforated plate is fixedly installed at one end of the top surface of the material cylinder inside the air duct, and the diameter of the perforated plate is smaller than the minimum particle size of coffee beans.

[0014] Furthermore, the top surface of the feed plate is polished.

[0015] Furthermore, a guide rod is welded to one side surface of the baffle, and the guide rod has an L-shaped structure, and the guide rod passes through the gantry and is slidably connected to the gantry.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides a coffee bean gravity grading device, which has the following beneficial effects:

[0018] (1) This utility model employs an air outlet ring, an air intake hood, a blower, and an air pump. When performing gravity grading of coffee beans, coffee beans can be fed from one end of the feeder plate onto the top surface of the feeder plate. The coffee beans slide down the feeder plate into the air duct. At this time, the air pump and the blower start simultaneously. The air pump extracts the air from the air duct and the air intake hood, making the bottom surface of the air intake hood negatively pressurized. At the same time, the blower generates a rapid airflow that enters the airflow channel inside the air outlet ring through the air delivery pipe, and then flows out through the air outlet at an accelerated speed, forming a rapid air duct. According to Bernoulli's theorem, outside air enters the duct from the bottom and flows vertically upwards at high speed, blowing the lighter coffee beans vertically upwards into the suction hood. The airflow and the lighter coffee beans enter the suction hood and then through the air duct into the feed cylinder, while the heavier coffee beans pass through the air outlet ring and fall down the duct, completing the gravity grading process. This device uses wind power for gravity grading, which is fast, efficient, simple in structure, and inexpensive to manufacture. It also does not affect the coffee beans and is suitable for widespread use.

[0019] (2) This utility model adopts a baffle and a handle screw for adjusting the baffle. The operator can rotate the handle screw to adjust the vertical distance between the bottom surface of the baffle and the top surface of the feed plate. The operator can rotate the handle screw until the vertical height between the bottom surface of the baffle and the bottom surface of the feed plate is greater than the maximum particle size of the coffee bean and less than twice the particle size of the coffee bean. This makes it easier for the coffee beans to roll in a single layer, which is convenient for the wind to penetrate later, thus facilitating the air separation and gravity grading and improving the efficiency of gravity grading. Attached Figure Description

[0020] 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.

[0021] Figure 1 This is a schematic diagram of the structure of a gravity grading device for coffee beans proposed in this utility model;

[0022] Figure 2 This is a front view of a gravity grading device for coffee beans proposed in this utility model;

[0023] Figure 3 This is an enlarged view of node A of a gravity grading device for coffee beans proposed in this utility model;

[0024] Figure 4 This is a schematic diagram of the air outlet ring proposed in this utility model.

[0025] In the picture:

[0026] 1. Air duct; 2. Suction hood; 3. Air pipe; 4. Perforated plate; 5. Suction pipe; 6. Material cylinder; 7. Air pump; 8. Air outlet ring; 9. Air delivery pipe; 10. Blower; 11. Material guide plate; 12. Side plate; 13. Gantry; 14. Handle screw; 15. Guide rod; 16. Baffle; 17. Airflow channel; 18. Air outlet. Detailed Implementation

[0027] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0028] According to an embodiment of the present invention, a gravity grading device for coffee beans is provided.

[0029] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figure 1-4As shown, a gravity grading device for coffee beans according to an embodiment of the present invention includes a blower 1 and a feeder plate 11. The blower 1 is fixedly mounted on the lower part of one end of the feeder plate 11, and an air outlet ring 8 is fixedly installed inside the blower 1. An airflow channel 17 is formed inside the air outlet ring 8. The airflow channel 17 has an annular structure, and an air outlet 18 is formed on the top surface of the airflow channel 17 through the top surface of the air outlet ring 8. The bottom surface of the blower 1 is raised to facilitate airflow replenishment. An air intake hood 2 is fixedly mounted on the top of the blower 1. Furthermore, a duct 3 is connected to the top of the suction hood 2, and a suction pipe 5 is connected to the other end of the duct 3. A blower 10 is fixedly installed on the other side of the air duct 1, and the outlet of the blower 10 is connected to the airflow channel 17 through the air supply pipe 9. A suction pump 7 is fixedly installed on the other side of the blower 10, and the suction end of the suction pump 7 is connected to the other end of the suction pipe 5. A feed cylinder 6 is connected to the bottom of the other end of the air duct 3. When performing gravity grading of coffee beans, the coffee beans can be fed from the feed plate 11. One end is fed onto the top surface of the feeder plate 11, and the coffee beans slide down the feeder plate 11 into the air duct 1. At this time, the suction pump 7 and the blower 10 start simultaneously. The suction pump 7 extracts the air from the air duct 3 and the suction hood 2, making the bottom surface of the suction hood 2 a negative pressure state. At the same time, the blower 10 generates a rapid airflow that enters the airflow channel 17 inside the air outlet ring 8 through the air supply pipe 9, and then flows out accelerated through the air outlet 18, forming the rapid air duct 1. According to Bernoulli's theorem, outside air is replenished from the bottom surface of the air duct 1. The airflow enters the air duct 1 and flows vertically upwards rapidly, blowing the lighter coffee beans vertically upwards into the suction hood 2. The airflow and the lighter coffee beans enter the suction hood 2 and then pass through the air duct 3 into the feed cylinder 6. The heavier coffee beans pass through the air outlet ring 8 and the air duct 1 and fall down, completing the gravity grading. This device uses wind power for gravity grading, which is fast, efficient, simple in structure, and inexpensive to manufacture. It does not affect the coffee beans and is suitable for widespread use.

[0030] In one embodiment, side plates 12 are fixedly installed on both sides of the top surface of the feed plate 11, and a frame 13 is fixedly mounted on the top surface of the side plates 12. A handle screw 14 is threadedly connected to the top surface of the frame 13. A baffle 16 is rotatably connected to the bottom surface of the handle screw 14 through a rotating connector. The two sides of the baffle 16 slide against the side plates 12. A guide rod 15 is welded to one side surface of the baffle 16. The guide rod 15 has an L-shaped structure and passes through the frame 13 and is slidably connected to the frame 13 to guide the movement of the baffle 16 and prevent the baffle 16 from rotating. The operator can rotate the handle screw 14 to adjust the vertical distance between the bottom surface of the baffle 16 and the top surface of the feed plate 11. The operator can rotate the handle screw 14 until the vertical height between the bottom surface of the baffle 16 and the bottom surface of the feed plate 11 is greater than the maximum particle size of the coffee beans but less than twice the particle size of the coffee beans. This makes it easier for the coffee beans to roll in a single layer, which is convenient for subsequent wind penetration, thereby facilitating air separation and gravity grading and improving the efficiency of gravity grading.

[0031] In one embodiment, the top surface of the air outlet ring 8 is an inwardly inclined slope, and the top surface of the air outlet ring 8 is polished to facilitate the coffee beans sliding out of the air outlet ring 8.

[0032] In one embodiment, the width of the air outlet 18 is no more than 2 mm, and the air outlet 18 has an annular structure with a small cross-section, which facilitates the accelerated flow of air and avoids clogging of coffee beans.

[0033] In one embodiment, a bottom cover is threaded onto the bottom surface of the barrel 6, and the bottom surface of the barrel 6 has a funnel-shaped structure that can be opened to clean coffee beans.

[0034] In one embodiment, a perforated plate 4 is fixedly installed at one end of the top surface of the barrel 6 inside the air duct 3, and the diameter of the perforated plate 4 is smaller than the minimum particle size of coffee beans to prevent coffee beans from entering the air pump 7.

[0035] In one embodiment, the top surface of the feed plate 11 is polished to reduce friction and facilitate the slippage of coffee beans.

[0036] Working principle:

[0037] When performing gravity grading of coffee beans, coffee beans can be fed from one end of the feeder plate 11 onto its top surface. The coffee beans slide down the feeder plate 11 into the air duct 1. At this time, the suction pump 7 and the blower 10 start simultaneously. The suction pump 7 extracts air from the air duct 3 and the suction hood 2, creating a negative pressure at the bottom of the suction hood 2. Simultaneously, the blower 10 generates a rapid airflow that enters the airflow channel 17 inside the air outlet ring 8 through the air supply pipe 9, and then accelerates out through the air outlet 18, forming a rapid air duct 1. According to Bernoulli's theorem, outside air is replenished into the air duct 1 from its bottom surface, flowing vertically upwards rapidly, thus blowing the coffee beans with lower gravity vertically upwards into the suction hood 2. The airflow and the coffee beans with lower gravity enter the suction hood. 2. The coffee beans enter the material cylinder 6 through the air duct 3. The coffee beans with greater gravity fall through the air outlet ring 8 and the air duct 1, completing the gravity classification. This device uses wind power for gravity classification, which has a fast classification speed, high classification efficiency, simple structure, low manufacturing cost, and does not affect the coffee beans, making it suitable for widespread use. At the same time, the operator can rotate the handle screw 14 to adjust the vertical distance between the bottom surface of the baffle 16 and the top surface of the material guide plate 11. The operator can rotate the handle screw 14 until the vertical height between the bottom surface of the baffle 16 and the bottom surface of the material guide plate 11 is greater than the maximum particle size of the coffee beans but less than twice the particle size of the coffee beans. This makes it easier for the coffee beans to fall in a single layer, which is conducive to the subsequent wind penetration, thereby facilitating the air separation gravity classification and improving the efficiency of gravity classification.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 gravity classification apparatus, characterized in that, The utility model provides a coffee bean roasting machine, including wind cylinder (1) and follow material board (11), follow material board (11) one end below fixedly erects with wind cylinder (1), and wind cylinder (1) inside fixed mounting has the air ring (8), and the air ring (8) inside is set up with air flow channel (17), air flow channel (17) top surface penetrates the air ring (8) top surface and is set up with air outlet (18), wind cylinder (1) top fixedly erects with suction hood (2), and suction hood (2) top surface penetrates the connection of wind pipe (3), and wind pipe (3) other end penetrates the connection of suction pipe (5), wind cylinder (1) other side fixed mounting has the air blower (10), and air blower (10) air outlet end is connected through the air pipe (9) with air flow channel (17), air blower (10) other side fixed mounting has the air pump (7), and air pump (7) suction end and other end penetration connection of suction pipe (5), wind pipe (3) other end bottom surface penetrates the connection of material cylinder (6).

2. A coffee bean gravity grading device according to claim 1, characterised in that, The utility model discloses a coffee bean roasting machine, including wind cylinder (1) and follow material board (11), follow material board (11) one end below fixedly erects with wind cylinder (1), and wind cylinder (1) inside fixed mounting has the air ring (8), and the air ring (8) inside is set up with air flow channel (17), air flow channel (17) top surface penetrates the air ring (8) top surface and is set up with air outlet (18), wind cylinder (1) top fixedly erects with suction hood (2), and suction hood (2) top surface penetrates the connection of wind pipe (3), and wind pipe (3) other end penetrates the connection of suction pipe (5), wind cylinder (1) other side fixed mounting has the air blower (10), and air blower (10) air outlet end is connected through the air pipe (9) with air flow channel (17), air blower (10) other side fixed mounting has the air pump (7), and air pump (7) suction end and other end penetration connection of suction pipe (5), wind pipe (3) other end bottom surface penetrates the connection of material cylinder (6).

3. A coffee bean gravity grading device according to claim 1, wherein, The utility model discloses a coffee bean roasting machine, including wind cylinder (1) and follow material board (11), follow material board (11) one end below fixedly erects with wind cylinder (1), and wind cylinder (1) inside fixed mounting has the air ring (8), and the air ring (8) inside is set up with air flow channel (17), air flow channel (17) top surface penetrates the air ring (8) top surface and is set up with air outlet (18), wind cylinder (1) top fixedly erects with suction hood (2), and suction hood (2) top surface penetrates the connection of wind pipe (3), and wind pipe (3) other end penetrates the connection of suction pipe (5), wind cylinder (1) other side fixed mounting has the air blower (10), and air blower (10) air outlet end is connected through the air pipe (9) with air flow channel (17), air blower (10) other side fixed mounting has the air pump (7), and air pump (7) suction end and other end penetration connection of suction pipe (5), wind pipe (3) other end bottom surface penetrates the connection of material cylinder (6).

4. A coffee bean gravity grading device according to claim 1, wherein, The utility model discloses a coffee bean roasting machine, including wind cylinder (1) and follow material board (11), follow material board (11) one end below fixedly erects with wind cylinder (1), and wind cylinder (1) inside fixed mounting has the air ring (8), and the air ring (8) inside is set up with air flow channel (17), air flow channel (17) top surface penetrates the air ring (8) top surface and is set up with air outlet (18), wind cylinder (1) top fixedly erects with suction hood (2), and suction hood (2) top surface penetrates the connection of wind pipe (3), and wind pipe (3) other end penetrates the connection of suction pipe (5), wind cylinder (1) other side fixed mounting has the air blower (10), and air blower (10) air outlet end is connected through the air pipe (9) with air flow channel (17), air blower (10) other side fixed mounting has the air pump (7), and air pump (7) suction end and other end penetration connection of suction pipe (5), wind pipe (3) other end bottom surface penetrates the connection of material cylinder (6).

5. A coffee bean gravity grading device according to claim 1, wherein, The utility model discloses a coffee bean roasting machine, including wind cylinder (1) and follow material board (11), follow material board (11) one end below fixedly erects with wind cylinder (1), and wind cylinder (1) inside fixed mounting has the air ring (8), and the air ring (8) inside is set up with air flow channel (17), air flow channel (17) top surface penetrates the air ring (8) top surface and is set up with air outlet (18), wind cylinder (1) top fixedly erects with suction hood (2), and suction hood (2) top surface penetrates the connection of wind pipe (3), and wind pipe (3) other end penetrates the connection of suction pipe (5), wind cylinder (1) other side fixed mounting has the air blower (10), and air blower (10) air outlet end is connected through the air pipe (9) with air flow channel (17), air blower (10) other side fixed mounting has the air pump (7), and air pump (7) suction end and other end penetration connection of suction pipe (5), wind pipe (3) other end bottom surface penetrates the connection of material cylinder (6).

6. A coffee bean gravity grading device according to claim 1, wherein, The utility model discloses a coffee bean roasting machine, including wind cylinder (1) and follow material board (11), follow material board (11) one end below fixedly erects with wind cylinder (1), and wind cylinder (1) inside fixed mounting has the air ring (8), and the air ring (8) inside is set up with air flow channel (17), air flow channel (17) top surface penetrates the air ring (8) top surface and is set up with air outlet (18), wind cylinder (1) top fixedly erects with suction hood (2), and suction hood (2) top surface penetrates the connection of wind pipe (3), and wind pipe (3) other end penetrates the connection of suction pipe (5), wind cylinder (1) other side fixed mounting has the air blower (10), and air blower (10) air outlet end is connected through the air pipe (9) with air flow channel (17), air blower (10) other side fixed mounting has the air pump (7), and air pump (7) suction end and other end penetration connection of suction pipe (5), wind pipe (3) other end bottom surface penetrates the connection of material cylinder (6).

7. A coffee bean gravity grading device according to claim 1, wherein, The utility model discloses a coffee bean roasting machine, including wind cylinder (1) and follow material board (11), follow material board (11) one end below fixedly erects with wind cylinder (1), and wind cylinder (1) inside fixed mounting has the air ring (8), and the air ring (8) inside is set up with air flow channel (17), air flow channel (17) top surface penetrates the air ring (8) top surface and is set up with air outlet (18), wind cylinder (1) top fixedly erects with suction hood (2), and suction hood (2) top surface penetrates the connection of wind pipe (3), and wind pipe (3) other end penetrates the connection of suction pipe (5), wind cylinder (1) other side fixed mounting has the air blower (10), and air blower (10) air outlet end is connected through the air pipe (9) with air flow channel (17), air blower (10) other side fixed mounting has the air pump (7), and air pump (7) suction end and other end penetration connection of suction pipe (5), wind pipe (3) other end bottom surface penetrates the connection of material cylinder (6).

8. A coffee bean gravity grading device according to claim 2, wherein, The utility model discloses a coffee bean roasting machine, including wind cylinder (1) and follow material board (11), follow material board (11) one end below fixedly erects with wind cylinder (1), and wind cylinder (1) inside fixed mounting has the air ring (8), and the air ring (8) inside is set up with air flow channel (17), air flow channel (17) top surface penetrates the air ring (8) top surface and is set up with air outlet (18), wind cylinder (1) top fixedly erects with suction hood (2), and suction hood (2) top surface penetrates the connection of wind pipe (3), and wind pipe (3) other end penetrates the connection of suction pipe (5), wind cylinder (1) other side fixed mounting has the air blower (10), and air blower (10) air outlet end is connected through the air pipe (9) with air flow channel (17), air blower (10) other side fixed mounting has the air pump (7), and air pump (7) suction end and other end penetration connection of suction pipe (5), wind pipe (3) other end bottom surface penetrates the connection of material cylinder (6). The

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