Coffee bean baking and stirring device

Abstract

The utility model provides a coffee bean baking and stirring device, which belongs to the technical field of coffee bean production, and comprises a device bin, a stirring component and a heating component are arranged in the device bin, the stirring component comprises a stirring mesh cylinder, a plurality of groups of arc digging plates are arranged on the inner wall of the stirring mesh cylinder at equal intervals, and the arc digging plates are arranged on the stirring mesh cylinder. One end of the stirring net cylinder is fixedly connected with the output end of a driving motor through a rotating shaft, the heating assembly comprises a heating partition net and a heating pipe, the other end of the stirring net cylinder is movably connected with the heating pipe on the inner wall of the device bin through a connecting shaft seat, heating pieces are arranged on the outer surface of the heating pipe at equal intervals, and the heating pieces are arranged on the outer surface of the heating pipe at equal intervals. An air duct is formed in the interval part, multiple sets of air outlets are formed in the bottom wall of the air duct, and the interval between the bottom side walls of the air duct is larger than that between the top side walls of the air duct; a heating wire is arranged in the heating pipe; the coffee bean baking device can solve the problem that coffee beans are heated unevenly due to the fact that the heat transfer efficiency of coffee bean baking is low.

Description

Technical Field

[0001] The utility model belongs to the technical field of coffee bean production, and in particular relates to a coffee bean roasting and stirring device. Background Art

[0002] As a popular beverage, coffee's quality and taste are increasingly attracting consumers' attention. Roasting coffee beans is a key step in determining coffee quality. During the coffee production process, different varieties of coffee beans need to be roasted to release their unique aroma and flavor.

[0003] Hot air plays a crucial role in the coffee bean roasting process. It transfers heat to the beans, evaporating their internal moisture while triggering a complex series of chemical reactions that create coffee's unique flavor and aroma. However, some coffee bean roasting equipment currently on the market typically uses simple heating methods, such as electric or gas heating, followed by a fan that blows the hot air into the roasting chamber. However, due to the limited penetration of hot air, it often only heats the surface of the beans, while internal heat transfer is relatively slow. This results in uneven heating of the beans during roasting, with some beans potentially being over-roasted while others remain under-roasted. This uneven heating not only affects the taste and flavor of the coffee but also reduces its quality and value. Utility Model Content

[0004] In view of this, the utility model provides a coffee bean roasting and stirring device, which can solve the problem of uneven heating of coffee beans caused by low heat transfer efficiency during coffee bean roasting.

[0005] The utility model is achieved in this way:

[0006] The utility model provides a coffee bean roasting and stirring device, comprising a device bin, a stirring assembly and a heating assembly are arranged inside the device bin, wherein the stirring assembly comprises a stirring net drum, a plurality of groups of arc-shaped digging plates are arranged at equal intervals on the inner wall of the stirring net drum, one end of the stirring net drum is fixedly connected to the output end of the driving motor through a rotating shaft, the heating assembly comprises a heating partition and a heating pipe, the other end of the stirring net drum is movably connected to the heating pipe on the inner wall of the device bin through a coupling seat, the heating plates are arranged on the outer surface of the heating pipe at equal intervals, wherein an air duct is opened in the spaced portion, a plurality of groups of air outlet holes are opened on the bottom wall of the air duct, the spacing between the bottom side walls of the air duct is greater than the spacing between the top side walls, so as to accelerate airflow output; a heating wire is arranged inside the heating pipe, the heating pipe is connected to the fan outside the device bin, an opening is opened on the stirring net drum, and a movable cover plate is hinged at the opening by a hinge.

[0007] The coffee bean roasting and stirring device provided by the utility model has the following technical effects: by arranging a stirring net drum as a place for accommodating and stirring coffee beans, the net drum structure is convenient for heat transfer and hot air circulation, and the coffee beans can be heated more evenly; by arranging an arc-shaped digging plate, when the device bin rotates, the arc-shaped digging plate can continuously stir and bring out the coffee beans from the bottom of the pile, and pour the coffee beans back onto the upper surface of the bottom as the rotation sequentially transfers them upward, so as to ensure that each coffee bean can fully contact the heat, avoiding local overheating or uneven roasting; the driving motor provides power, and the rotating shaft drives the stirring net drum to rotate, so as to realize automatic stirring of the coffee beans; by arranging a heating partition net to isolate the coffee beans from the heating plate, the coffee beans are prevented from directly contacting the heating plate and being overheated; on the other hand, by arranging an air duct to accelerate the hot air flow rate and cooperate with the dense fine mesh holes to allow the hot air to pass through, the penetration of the hot air is increased, and the heat is more evenly distributed to the coffee beans, achieving a better roasting effect.

[0008] On the basis of the above technical solution, the coffee bean roasting and stirring device of the present invention can also be improved as follows:

[0009] Wherein, both sides of the arc-shaped digging plate are fixedly connected to the side walls of the mixing net drum, and reinforcing ribs are provided at the connection between the two sides of the arc-shaped digging plate to enhance the stability of the connection.

[0010] The beneficial effects of adopting the above-mentioned improvement scheme are: by designing the reinforcing ribs, the stability of the connection between the arc-shaped digging plate and the side wall of the mixing net cylinder is enhanced, thereby improving the durability of the device.

[0011] Furthermore, the arc-shaped digging plate is densely covered with circular mesh holes, and the heating isolation net is densely covered with fine mesh holes.

[0012] The beneficial effect of adopting the above-mentioned improvement scheme is: by providing circular mesh holes on the arc-shaped digging plate, it is also to facilitate heat transfer and heat the coffee beans.

[0013] Furthermore, a fixing plate is provided at one end of the outer side wall of the heating tube, and the fixing plate is used to cooperate with bolts to fix the heating tube on the inner wall of the device bin.

[0014] The beneficial effects of adopting the above-mentioned improved solution are as follows: by providing a fixing plate, the heating pipe is firmly mounted on the inner wall of the device bin, ensuring that the heating pipe will not loosen during operation, and the coupling seat can enable the mixing net drum to rotate around the heating pipe with the power provided by the drive motor.

[0015] Furthermore, a through hole is provided on the side wall of the device chamber, and the size of the through hole is adapted to the outer diameter of the heating tube.

[0016] Furthermore, the fan is fixedly connected to the side wall of the device bin by bolts, and the output end of the fan is fixedly installed with the end of the heating tube through a pipe sleeve.

[0017] Furthermore, the top of the device bin is movably connected to a bin cover via a hinge, and a handle is fixedly connected to the bin cover.

[0018] Furthermore, a material receiving trough is provided at the bottom end of the interior of the device bin, and the side wall of the material receiving trough is a slope structure that gradually narrows from wide.

[0019] Furthermore, the bottom end of the receiving trough is connected to the bottom of the device bin and is provided with a discharge port.

[0020] Furthermore, the driving motor is fixedly mounted on the outer side wall of the device bin by means of bolts, and the output end of the driving motor passes through the side wall of the device bin and is fixedly connected to the rotating shaft.

[0021] Compared with the prior art, the beneficial effects of the coffee bean roasting and stirring device provided by the present invention are as follows: by setting a stirring net drum as a place for accommodating and stirring coffee beans, the net drum structure facilitates heat transfer and hot air circulation, and can make the coffee beans more evenly heated; by setting an arc-shaped digging plate, when the device bin rotates, the arc-shaped digging plate can continuously stir and bring out the coffee beans from the bottom of the pile, and in the process of transferring the coffee beans upward in sequence as the rotation, the coffee beans are poured back onto the upper surface of the bottom; ensuring that each coffee bean can fully contact the heat to avoid local overheating or uneven roasting; the driving motor provides power, and the rotating shaft drives the stirring net drum to rotate, thereby realizing automatic stirring of the coffee beans; by setting a heating partition net to isolate the coffee beans from the heating plate, the coffee beans are prevented from directly contacting the heating plate and being overheated; on the other hand, by setting an air duct to accelerate the hot air flow rate and cooperating with the dense fine mesh to allow the hot air to pass through, the penetration of the hot air is increased, and the heat is more evenly dissipated to the coffee beans, achieving a better roasting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0023] Figure 1 This is a structural diagram of a coffee bean roasting and stirring device;

[0024] Figure 2 A schematic side cross-sectional view of a stirring net cylinder of a coffee bean roasting and stirring device;

[0025] Figure 3 This is a schematic diagram of the air duct structure of a coffee bean roasting and stirring device;

[0026] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0027] 10. Installation chamber; 11. Mixing net drum; 12. Driving motor; 13. Coupling seat; 14. Heating screen; 15. Heating tube; 16. Heating plate; 17. Air duct; 18. Fan; 19. Curved digging plate; 20. Fixed plate. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0029] like Figure 1-3 As shown, an embodiment of a coffee bean roasting and stirring device provided by the present invention is shown. In this embodiment, the device comprises a device chamber 10, wherein a stirring assembly and a heating assembly are arranged inside the device chamber 10, wherein the stirring assembly comprises a stirring net drum 11, wherein a plurality of groups of arc-shaped digging plates 19 are arranged at equal intervals on the inner wall of the stirring net drum 11, wherein one end of the stirring net drum 11 is fixedly connected to the output end of the driving motor 12 via a rotating shaft, and the heating assembly comprises a heating screen 14 and a heating pipe 15, wherein the other end of the stirring net drum 11 is connected via a connecting shaft. The seat 13 is movably connected to the heating tube 15 on the inner wall of the device chamber 10. Heating plates 16 are arranged at equal intervals on the outer surface of the heating tube 15. Among them, the spaced portions are provided with air ducts 17. The bottom wall of the air duct 17 is provided with multiple groups of air outlet holes. The spacing between the bottom side walls of the air duct 17 is greater than the spacing between the top side walls, which is used to accelerate the airflow output. A heating wire is provided inside the heating tube 15, and the heating tube 15 is connected to the fan 18 outside the device chamber 10. The mixing net cylinder 11 is provided with an opening, and a movable cover is hinged to the opening via a hinge.

[0030] During use, the heating wire inside the heating tube 15 is energized to generate heat, and the outside air is sucked in by the fan 18. At the same time, the heating plate 16 is turned on to cooperate with the temperature inside the device chamber 10. When the air passes through the heating tube 15, it is heated to form hot air and is discharged through the air outlet. Since the spacing between the bottom side walls of the air duct 17 is greater than the spacing between the top side walls, according to the principles of fluid mechanics, the hot air will accelerate through the air duct 17 and penetrate the fine mesh on the heating partition 14 to heat the coffee beans inside the stirring net drum 11. At the same time of heating, the motor 12 is driven to drive the stirring net drum 11 to rotate, and the multiple groups of arc-shaped digging plates on the inner wall of the stirring net drum rotate with the net drum. During the rotation process, the arc-shaped digging plates continuously turn the coffee beans, so that the coffee beans can fully contact with the hot air, ensuring uniform heating.

[0031] In the above technical solution, both sides of the arc-shaped digging plate 19 are fixedly connected to the side walls of the mixing net drum 11, and reinforcing ribs are provided at the connection between the two sides of the arc-shaped digging plate 19 to enhance the stability of the connection.

[0032] Furthermore, in the above technical solution, the arc-shaped digging plate 19 is densely covered with circular meshes, and the heating partition 14 is densely covered with fine meshes.

[0033] The size of the circular mesh should be smaller than the size of the coffee beans, and can be specifically set to 0.5 to 1.5 mm.

[0034] Furthermore, in the above technical solution, a fixing plate 20 is provided at one end of the outer wall of the heating tube 15 , and the fixing plate 20 is used to cooperate with bolts to fix the heating tube 15 on the inner wall of the device chamber 10 .

[0035] Furthermore, in the above technical solution, a through hole is opened on the side wall of the device chamber 10 , and the size of the through hole is adapted to the outer diameter of the heating tube 15 .

[0036] Furthermore, in the above technical solution, the fan 18 is fixedly connected to the side wall of the device chamber 10 by bolts, and the output end of the fan 18 is fixedly installed with the end of the heating tube 15 through a pipe sleeve.

[0037] Furthermore, in the above technical solution, the top of the device bin 10 is movably connected to a bin cover via a hinge, and a handle is fixedly connected to the bin cover.

[0038] Furthermore, in the above technical solution, a material receiving trough is provided at the bottom end of the device bin 10, and the side wall of the material receiving trough is a slope structure that gradually narrows from wide to narrow.

[0039] Furthermore, in the above technical solution, a discharge port is provided at the bottom of the bottom end of the receiving trough and the communicating device bin 10 .

[0040] Furthermore, in the above technical solution, the drive motor 12 is fixedly mounted on the outer wall of the device compartment 10 by means of bolts, and the output end of the drive motor 12 passes through the side wall of the device compartment 10 and is fixedly connected to the rotating shaft.

[0041] Specifically, the principle of the present invention is that the heating wire inside the heating tube generates heat when it is energized, and the fan draws in outside air and blows it toward the heating tube. When the air passes through the heating tube, it is heated to form hot air.

[0042] The heating plates arranged at equal intervals on the outer surface of the heating tube further improve the heating efficiency. The hot air is output through the air duct opened in the spaced portion of the heating tube. Since the spacing between the bottom side walls of the air duct is greater than the spacing between the top side walls, according to the principles of fluid mechanics, this will accelerate the airflow output, allowing the hot air to enter the device compartment at a faster speed and a larger flow rate; after the drive motor is started, the rotating shaft connected to the output end drives the turning net to rotate. The multiple sets of arc-shaped digging plates on the inner wall of the turning net rotate with the net. During the rotation process, the arc-shaped digging plates continuously turn the coffee beans so that the coffee beans can fully contact with the hot air, ensuring uniform heating; the dense circular mesh holes on the arc-shaped digging plates and the dense fine mesh holes on the heating partition net allow hot air to pass through on the one hand, and on the other hand, play a certain protective role during the turning process, preventing the coffee beans from getting too close to the heating tube and being damaged.

Claims

1. A coffee bean roasting and stirring device, comprising a device chamber (10), wherein a stirring component and a heating component are arranged inside the device chamber (10), characterized in that: The stirring assembly comprises a stirring net drum (11), a plurality of groups of arc-shaped digging plates (19) are arranged on the inner wall of the stirring net drum (11) at equal intervals, one end of the stirring net drum (11) is fixedly connected to the output end of the driving motor (12) through a rotating shaft, the heating assembly comprises a heating screen (14) and a heating pipe (15), the other end of the stirring net drum (11) is movably connected to the heating pipe (15) on the inner wall of the device bin (10) through a coupling seat (13), and the heating plates (16) are arranged at equal intervals. The heating tube (15) is provided with an air duct (17) at a spacing portion, and a plurality of air outlet holes are provided on the bottom wall of the air duct (17). The spacing between the bottom side walls of the air duct (17) is greater than the spacing between the top side walls, so as to accelerate the output of the air flow. A heating wire is provided inside the heating tube (15), and the heating tube (15) is connected to a fan (18) outside the device bin (10). An opening is provided on the mixing net cylinder (11), and a movable cover is hinged to the opening via a hinge.

2. The coffee bean roasting and stirring device according to claim 1, characterized in that: Both sides of the arc-shaped digging plate (19) are fixedly connected to the side walls of the mixing net drum (11), and reinforcing ribs are provided at the connection points on both sides of the arc-shaped digging plate (19) to enhance the stability of the connection points.

3. The coffee bean roasting and stirring device according to claim 2, characterized in that: The arc-shaped digging plate (19) is densely covered with circular meshes, and the heating isolation net (14) is densely covered with fine meshes.

4. The coffee bean roasting and stirring device according to claim 3, characterized in that: A fixing plate (20) is provided at one end of the outer wall of the heating tube (15), and the fixing plate (20) is used to cooperate with bolts to fix the heating tube (15) on the inner wall of the device bin (10).

5. The coffee bean roasting and stirring device according to claim 4, characterized in that: A through hole is provided on the side wall of the device chamber (10), and the size of the through hole is adapted to the outer diameter of the heating tube (15).

6. The coffee bean roasting and stirring device according to claim 5, characterized in that: The fan (18) is fixedly connected to the side wall of the device bin (10) by means of bolts, and the output end of the fan (18) is fixedly mounted to the end of the heating tube (15) through a pipe sleeve.

7. The coffee bean roasting and stirring device according to claim 6, characterized in that: The top of the device bin (10) is movably connected to a bin cover via a hinge, and a handle is fixedly connected to the bin cover.

8. The coffee bean roasting and stirring device according to claim 7, characterized in that: A material receiving trough is provided at the bottom end of the interior of the device bin (10), and the side wall of the material receiving trough is a slope structure that gradually narrows from wide.

9. The coffee bean roasting and stirring device according to claim 8, characterized in that: The bottom end of the receiving trough is connected to the bottom of the device bin (10) and is provided with a discharge port.

10. The coffee bean roasting and stirring device according to claim 9, characterized in that: The drive motor (12) is fixedly mounted on the outer wall of the device bin (10) by means of bolts, and the output end of the drive motor (12) passes through the side wall of the device bin (10) and is fixedly connected to the rotating shaft.

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