阅读说明：本技术 一种冷萃咖啡的制备设备、制备方法 (Preparation equipment and preparation method of cold-extraction coffee ) 是由 徐龙洋 张金秀 于 2021-05-27 设计创作，主要内容包括：本发明属于冷萃咖啡制备技术领域,具体的说是一种冷萃咖啡的制备设备、制备方法,该制备设备包括壳体、电机、温控器、取料门、烘焙单元和控制器；所述控制器控制烘焙单元；所述壳体顶部为弧形设置,且壳体顶部位于中间位置开设有放料口；所述壳体弧形表面的一侧固连有温控器,且壳体上相邻弧形表面的一侧固连有电机；所述壳体内靠近顶部位置设置有滚筒,且滚筒的弧形外表面与壳体顶部的弧形内壁相对应,通过滚筒与通孔之间的配合,电机带动滚筒转动,滚筒带动咖啡豆在滚筒弧形内壁上翻滚,热空气通过通孔进入滚筒内部对咖啡豆进行干燥,使得咖啡豆在翻滚运动时,热空气吹向咖啡豆,增加咖啡豆干燥的均匀性。(The invention belongs to the technical field of cold extraction coffee preparation, and particularly relates to a cold extraction coffee preparation device and a preparation method, wherein the preparation device comprises a shell, a motor, a temperature controller, a material taking door, a baking unit and a controller; the controller controls the roasting unit; the top of the shell is arc-shaped, and a discharge hole is formed in the middle of the top of the shell; one side of the arc surface of the shell is fixedly connected with a temperature controller, and one side of the adjacent arc surface of the shell is fixedly connected with a motor; be provided with the cylinder near top position in the casing, and the arc surface of cylinder is corresponding with the arc inner wall at casing top, and through the cooperation between cylinder and the through-hole, the motor drives the cylinder and rotates, and the cylinder drives coffee beans and rolls on cylinder arc inner wall, and hot-air gets into the inside coffee beans drying to the cylinder through the through-hole for coffee beans when rolling the motion, hot-air blows to coffee beans, increases the dry homogeneity of coffee beans.)

1. A cold extract coffee preparation apparatus, characterized in that: comprises a shell (1), a motor (11), a temperature controller (12), a material taking door (13), a baking unit (14) and a controller; the controller controls a baking unit (14); the top of the shell (1) is arc-shaped, and a discharge hole (15) is formed in the middle of the top of the shell (1); one side of the arc surface of the shell (1) is fixedly connected with a temperature controller (12), and one side of the adjacent arc surface of the shell (1) is fixedly connected with a motor (11); a roller (2) is arranged in the shell (1) and close to the top, the arc-shaped outer surface of the roller (2) corresponds to the arc-shaped inner wall of the top of the shell (1), one end of the roller (2) close to the motor (11) is fixedly connected with an output shaft in the motor (11), and one end of the roller (2) far away from the motor (11) is rotatably connected with the inner wall of the shell (1); the indoor type inner wall of the roller (2) is uniformly and circumferentially fixedly connected with a convex block (21), rectangular through holes (22) are formed in the positions, close to the convex blocks (21), of the roller (2), the through holes (22) are located on one side, far away from the controller, of the convex blocks (21), and a filter screen (23) is fixedly connected in the through holes (22); a discharge door (16) is hinged to the middle position of the arc surface on the roller (2); the bottom has linked firmly and cures unit (14) in casing (1), and one side of casing (1) relative motor (11) articulates there is material taking door (13), and material taking door (13) are located cylinder (2) and cure between unit (14).

2. A device for preparing cold-extracted coffee according to claim 1, characterized in that: the cross section of each bump (21) is a right triangle, and one side of each bump (21) close to the through hole (22) is an inclined plane.

3. A device for preparing cold-extracted coffee according to claim 2, characterized in that: the aperture of the through hole (22) close to the inner part of the roller (2) is larger than the aperture of the through hole (22) far away from the inner part of the roller (2).

4. A device for preparing cold-extracted coffee according to claim 3, characterized in that: the guide blocks (17) are fixedly connected between the adjacent through holes (22) on the roller (2), and the cross sections of the guide blocks (17) consist of circular arcs a, circular arcs b and circular arcs c; the arc a is attached to the outer surface of the roller (2), two ends of the arc a are close to the adjacent through holes (22), the radius of the arc c is smaller than that of the arc a, the radius of the arc a is smaller than that of the arc b, and one end, away from the arc a, of the arc b is attached to the arc inner wall of the shell (1).

5. A device for preparing cold-extracted coffee according to claim 4, characterized in that: the arc-shaped inner wall in the shell (1) is symmetrically and fixedly connected with a guide plate (18), one end of the guide plate (18) close to the roller (2) is positioned on the arc-shaped inner wall of the shell (1), and one end of the guide plate (18) far away from the roller (2) is positioned close to the baking unit (14); the cross section of the guide plate (18) consists of an arc d and an arc e, the radius of the arc d is the same as that of the arc inner wall of the shell (1), and the radius of the arc e is larger than that of the arc d.

6. A device for preparing cold-extracted coffee according to claim 5, characterized in that: one end of the flow guide block (17) close to the inner wall of the shell (1) is fixedly connected with a sealing block (19), and the sealing block (19) is attached to the arc-shaped inner wall of the top of the shell (1).

7. A method for preparing cold-extracted coffee is characterized in that: the process is applied to a device for preparing cold-extracted coffee according to any of claims 1 to 6, and the method comprises the following steps:

s1: putting coffee beans into a coring machine, working at a speed of 125 kg of husking per hour, husking the coffee beans, screening the coffee beans after husking, and screening to remove the coffee beans which do not meet the quality; washing the screened coffee beans with clean water to remove dirt on the surfaces of the coffee beans, and baking the cleaned coffee beans in a baking machine;

s2: starting the roasting machine, driving the roller (2) to rotate by the motor (11), controlling the roasting unit (14) to climb at 7-14 ℃ per minute by the controller until the temperature reaches the temperature value range set by the temperature controller (12), setting the temperature value range of the temperature controller (12) according to the variety of coffee beans, controlling the temperature in the shell (1) to be in the set constant temperature range by the temperature controller (12), and heating and drying the coffee beans at the speed of roasting 200 kilograms per hour; grinding and crushing the roasted coffee beans at a speed of 10 kg per hour by using a roller disc grinder;

s3: pulping the ground coffee powder, wherein the mixing ratio of cold water to the coffee powder is 8: 1; cold extraction treatment is carried out on the coffee solution after the mixing is finished in a low-temperature environment, and the cold extraction treatment time is at least more than 12 hours; and filtering the coffee bean powder in the coffee solution by using filter cloth after cold extraction treatment, and filtering the finished coffee solution to obtain the finished cold-extracted coffee.

Technical Field

The invention belongs to the technical field of cold-extraction coffee preparation, and particularly relates to cold-extraction coffee preparation equipment and a cold-extraction coffee preparation method.

Background

Cold extracted coffee generally refers to a coffee drink made by grinding coffee beans into a powder at room temperature or lower. Of course, cold ice coffee is not necessarily cold extract coffee, and the two concepts are different. Because cold extracted coffee typically extracts the substance for a longer time than traditional hot water extraction. This unique temperature and longer exposure time results in unique organoleptic and quality characteristics in the finished beverage characterized by: has less bitter taste, smoother and more delicate mouthfeel. Cold extraction typically uses water at ambient or colder temperatures to extend the time to extract the optimal flavor and solids from the beans. Contact time, temperature, degree of baking, grind size, pressure, or infusion method, among other factors, can affect the final extracted ingredients and flavor.

The technical scheme includes that a patent is also provided in the prior art, and relates to a preparation device and a preparation method of cold extraction coffee, for example, a Chinese patent with application number of CN2019216194931 discloses a coffee bean dryer, which comprises a frame, and a driving roller and a driven roller rotatably erected on the frame, wherein the frame is also provided with an oven with a drying cavity thereon, the oven is provided with a heating cavity, the heating cavity and the drying cavity are separated by a lower partition plate uniformly provided with a plurality of lower through holes, an upper partition plate positioned below an electric heating net is fixedly installed in the heating cavity, the upper partition plate is uniformly provided with a plurality of upper through holes, the bottom surface of the upper partition plate is uniformly and rotatably provided with a plurality of air-equalizing rotating shafts, and air-equalizing rotating shafts arranged in the lower through holes are provided with air-equalizing fan blades for exhausting air in the heating cavity; however, the technical scheme has the defects that under the action of the induced draft fan and the rotating uniform air fan blades, external air enters the heating cavity and then respectively flows through the upper through hole and the lower through hole and then is blown into the drying cavity, wherein the air entering the heating cavity is heated by the electric heating net, so that the hot air can be uniformly blown to coffee beans on the conveying belt through the lower through hole, the conveying belt is pushed by the cam to vibrate, the coffee beans on the conveying belt are turned over, and the drying effect of the coffee beans is realized; when the rotating speed of the cam is low, the time for pushing the conveying belt by the cam is generated for buffering, so that the jumping effect of coffee beans is reduced, and the coffee beans are heated and dried unevenly; when the cam rotational speed is fast, the cam continuously pushes the conveyer belt to vibrate, and coffee beans on the conveyer belt continuously keep jumping, so that the drying time of the heated surface of the coffee beans is reduced, the drying efficiency of the coffee beans is reduced, and the processing efficiency of the dryer is reduced.

In view of the above, the present invention provides a device and a method for preparing cold-extracted coffee, which solve the above problems.

Disclosure of Invention

The invention provides a preparation device and a preparation method of cold-extracted coffee, aiming at making up for the defects of the prior art and solving the problems that the drying time is increased and the drying efficiency of a dryer is influenced due to the fact that coffee beans are heated and dried unevenly and the coffee beans are dried insufficiently.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a preparation device of cold-extraction coffee, which comprises a shell, a motor, a temperature controller, a material taking door, a baking unit and a controller, wherein the shell is provided with a plurality of grooves; the controller controls the roasting unit; the top of the shell is arc-shaped, and a discharge hole is formed in the middle of the top of the shell; one side of the arc surface of the shell is fixedly connected with a temperature controller, and one side of the adjacent arc surface of the shell is fixedly connected with a motor; a roller is arranged in the shell and close to the top, the arc-shaped outer surface of the roller corresponds to the arc-shaped inner wall of the top of the shell, one end of the roller close to the motor is fixedly connected with an output shaft in the motor, and one end of the roller far away from the motor is rotatably connected with the inner wall of the shell; lugs are fixedly connected to the inner wall of the house type of the roller in a uniform and circumferential mode, rectangular through holes are formed in the positions, close to the lugs, of the roller, the through holes are located on one side, away from the controller, of the lugs, and filter screens are fixedly connected in the through holes; a discharge door is hinged to the middle position of the arc surface on the roller; the bottom has linked firmly the unit that cures in the casing, and the relative motor of casing one side articulates there is the material door of getting, and gets the material door and lie in the cylinder and cure between the unit.

When the coffee bean roasting machine is used, coffee beans are placed into the stoner, the stoner works at a speed of 125 kilograms of husks per hour, the coffee beans are husked, the coffee beans after the husking are sieved and cleaned, and the cleaned coffee beans are placed into the roasting machine for roasting; opening a discharging door of a roller in the roasting machine, pouring cleaned coffee beans into the roller, starting the roasting machine, and controlling a roasting unit to work by a controller, wherein the roasting unit is a conventional roasting mechanism in the field, the controller controls the roasting unit to heat at 7-14 ℃ per minute until the temperature reaches the upper limit of a temperature value set by a temperature controller, and the temperature in a temperature controller control shell is in a set constant temperature range; the motor is started, the baking unit heats the roller, the roller heats and bakes the coffee beans, through the matching between the roller and the through holes, the motor drives the roller to rotate, the roller drives the coffee beans to roll on the arc-shaped inner wall of the roller, hot air enters the roller through the through holes to dry the coffee beans, so that when the coffee beans roll, the hot air blows the coffee beans, the drying uniformity of the coffee beans is increased, when the coffee beans are prevented from being heated and dried, a part of surfaces of the coffee beans are dried for a long time, the coffee beans are heated unevenly, and the baking effect of the coffee beans is influenced; the lug is arranged, the lug is driven to move by the movement of the roller, after the coffee beans are contacted with the lug, the lug forms resistance to the coffee beans, the coffee beans are prevented from rolling, the coffee beans move along with the lug, when the lug moves to a high position, the direction of the resistance of the lug to the coffee beans is changed, the coffee beans fall to the bottom of the roller under the influence of gravity, at the moment, hot air blows into the roller through the through hole, the coffee beans are contacted with hot air flowing upwards in the falling process, the contact area of the coffee beans and the hot air is increased, the drying uniformity of the coffee beans is increased, the coffee beans are prevented from contacting the inner surface of the roller for a long time, the part of the coffee beans contacting the inner surface of the roller is excessively heated, and the roasting effect of the coffee beans is influenced.

Preferably, the cross section of each bump is a right triangle, and one side of each bump close to the through hole is an inclined plane.

When the coffee bean drying device is used, the cross section of the lug is a right triangle, the roller rotates to drive the lug to move, when the lug moves to the bottom of the roller, the surface of one side of the right-angle side in the lug is in a vertical state, coffee beans contact the surface of one side of the right-angle side of the lug, the lug forms resistance to the coffee beans in movement, the coffee beans are prevented from continuously rolling, when the lug moves to the position that the surface of one side of the right-angle side inclines towards the bottom of the roller, the coffee beans roll along the surface of one side of the right-angle side in the lug and fall to the bottom of the roller, the contact area between the lug and the coffee beans is increased, the number of the coffee beans scooped up by the lug is increased, the number of the coffee beans falling to the bottom of the roller and contacting with hot air is increased, and the drying speed of the coffee beans is increased; after the coffee beans were crossed in the hot-air contact, the hot-air flowed to the cylinder top from cylinder inside, and the hot-air receives the guide effect on inclined plane in the lug, flow direction through-hole to discharge hot-air, increase the inside hot air velocity of cylinder, and then increase the drying rate of coffee beans, avoid contacting the hot-air that contains moisture behind the coffee beans and stop inside the cylinder for a long time, influence the effect of baking of coffee beans.

Preferably, the diameter of the through hole close to the inner part of the roller is larger than that of the through hole far away from the inner part of the roller.

When the coffee bean drying machine is used, when hot air flows through the through holes, the aperture of the through holes close to the inner part of the roller is larger than the aperture of the through holes far away from the inner part of the roller, the hot air flows to the space of the end of the through holes far away from the inner part of the roller from the end of the through holes close to the inner part of the roller, the quality of the hot air cannot be accumulated in the through holes, so that the hot air flows through the through holes at an accelerated speed, the flow speed of the hot air passing through the through holes is increased, the flow speed of the hot air in the roller is increased, and the drying speed of coffee beans is increased; when hot air flows to the inside of the roller, the hot air approaches the inner wall of the through hole, the aperture of the through hole close to the inside of the roller is larger than the aperture of the through hole far away from the inside of the roller, the hot air flows to the inside of the roller along the inclined inner wall of the through hole, the range of the hot air flowing out of the through hole is enlarged, the contact range of the hot air flowing out of the through hole and coffee beans is enlarged, and therefore the drying speed of the coffee beans is further increased.

Preferably, the guide blocks are fixedly connected between adjacent through holes on the roller, and the cross section of each guide block consists of an arc a, an arc b and an arc c; the arc a is attached to the outer surface of the roller, two ends of the arc a are close to the adjacent through holes, the radius of the arc c is smaller than that of the arc a, the radius of the arc a is smaller than that of the arc b, and one end, far away from the arc a, of the arc b is attached to the arc inner wall of the shell.

When the coffee bean drying device is used, hot air flows into the roller from the bottom of the shell, and due to the arrangement of the flow guide block, the hot air rises until contacting the surface of the arc c in the flow guide block, and the hot air is blown to the through hole under the guiding action of the surface of the arc c in the flow guide block, so that the flow of the hot air flowing into the roller is increased, the speed of the coffee beans contacting the hot air is increased, the drying efficiency of the coffee beans is increased, and the problem that the drying effect of the coffee beans is reduced due to insufficient hot air flow in the process that the coffee beans fall over is avoided; because the one end laminating casing arc inner wall that circular arc a was kept away from to circular arc b among the water conservancy diversion piece, the cylinder rotates and drives the motion of water conservancy diversion piece, the one end laminating casing arc inner wall that circular arc a was kept away from to circular arc b among the water conservancy diversion piece moves, it directly flows to casing arc inner wall top along the casing inner wall to reduce hot-air, hot-air flows along the casing inner wall and is obstructed, make hot-air flow towards the through-hole direction, increase the flow of hot-air flow direction through-hole, thereby increase the speed that coffee beans contacted hot-air, and then increase coffee beans's drying efficiency.

Preferably, the arc-shaped inner wall of the shell is symmetrically and fixedly connected with a guide plate, one end of the guide plate, which is close to the roller, is positioned at the arc-shaped inner wall of the shell, and one end of the guide plate, which is far away from the roller, is positioned at the position close to the baking unit; the cross section of the guide plate consists of an arc d and an arc e, the radius of the arc d is the same as that of the arc inner wall of the shell, and the radius of the arc e is larger than that of the arc d.

When the coffee bean drying device is used, the guide plates are symmetrically arranged, hot air is blown to the roller from the bottom of the shell, the two guide plates are bent oppositely, so that the distance between the two guide plates and the part, close to the roller, of the two guide plates is reduced, when the hot air is blown to the roller under the guiding action of the surface of the arc e in the guide plates, the distance between the two guide plates and the baking unit is larger than the distance between the two guide plates and the part, close to the roller, of the two guide plates, the hot air is influenced by the change of the flowing space, so that the hot air flows to the roller in an accelerated manner, the flow of the hot air flowing to the through holes is increased, the contact speed of coffee beans with the hot air is increased, and the drying efficiency of the coffee beans is increased; through the cooperation between water conservancy diversion piece and the guide plate, when the cylinder rotates, the surface of circular arc b in the partly hot-air contact water conservancy diversion piece, the hot-air receives the guide effect to the surface of circular arc b in the piece, flow to the through-hole direction, the hot-air contact water conservancy diversion piece in the circular arc c's that flows towards the through-hole direction surface, thereby make the hot-air flow to lead to the inslot, the hot-air that the realization make full use of roast unit produced carries out the drying to the coffee beans, increase the hot air flow who contacts the coffee beans, thereby increase the aridity of coffee beans.

Preferably, the one end that the water conservancy diversion piece is close to shells inner wall all links firmly sealed piece, and the arc inner wall laminating at sealed piece and casing top.

When the flexible graphite packing is used, the roller rotates to drive the flow guide block to rotate, the flow guide block drives the sealing block to move along the arc-shaped inner wall of the shell, the sealing block is made of a flexible graphite packing, the flexible graphite packing is formed by processing and weaving flexible graphite composite coiled materials, and the flexible graphite packing has the characteristics of high temperature resistance, self-lubrication and low friction coefficient; by arranging the sealing block, when one end of the arc b in the flow guide block, which is far away from the arc a, is attached to the arc-shaped inner wall of the shell to move, the sealing performance of the flow guide block on hot air is improved, so that the hot air flow contacting coffee beans is increased, and the dryness of the coffee beans is improved; owing to be provided with sealed piece for the water conservancy diversion piece is through sealed piece indirect contact guide plate and casing arc inner wall, protection guide plate and casing arc inner wall, and then increases the leakproofness of water conservancy diversion piece to the hot-air, prevents that the water conservancy diversion piece from moving for a long time, and water conservancy diversion piece scrapes shells inner wall and guide plate for a long time, leads to the sealed effect of water conservancy diversion piece to the hot-air to reduce.

A method for preparing cold-extracted coffee is suitable for the cold-extracted coffee preparation equipment and comprises the following steps:

s1: putting coffee beans into a coring machine, working at a speed of 125 kg of husking per hour, husking the coffee beans, screening the coffee beans after husking, and screening to remove the coffee beans which do not meet the quality; washing the screened coffee beans with clean water to remove dirt on the surfaces of the coffee beans, and baking the cleaned coffee beans in a baking machine;

s2: starting the roasting machine, driving the roller to rotate by the motor, controlling the roasting unit to climb at 7-14 ℃ per minute by the controller until the temperature reaches a temperature value range set by the temperature controller, setting a temperature value range of the temperature controller according to the coffee bean variety, controlling the temperature in the shell to be within a set constant temperature range by the temperature controller, and heating and drying the coffee beans at a speed of roasting 200 kilograms per hour; grinding and crushing the roasted coffee beans at a speed of 10 kg per hour by using a roller disc grinder;

s3: pulping the ground coffee powder, wherein the mixing ratio of cold water to the coffee powder is 8: 1; cold extraction treatment is carried out on the coffee solution after the mixing is finished in a low-temperature environment, and the cold extraction treatment time is at least more than 12 hours; and filtering the coffee bean powder in the coffee solution by using filter cloth after cold extraction treatment, and filtering the finished coffee solution to obtain the finished cold-extracted coffee.

The invention has the following beneficial effects:

1. according to the preparation equipment and the preparation method of the cold extraction coffee, the lug is arranged, the roller moves to drive the lug to move, after coffee beans contact with the lug, the lug forms resistance on the coffee beans to prevent the coffee beans from rolling, the coffee beans move along with the lug, when the lug moves to a high position, the direction of the resistance of the lug on the coffee beans is changed, the coffee beans fall to the bottom of the roller under the influence of gravity, at the moment, hot air blows towards the inside of the roller through the through hole, the coffee beans contact with the hot air flowing upwards in the falling process, the contact area of the coffee beans and the hot air is increased, and therefore the drying uniformity of the coffee beans is increased.

2. According to the preparation equipment and the preparation method of the cold extraction coffee, one end of the arc b in the flow guide block, which is far away from the arc a, is attached to the arc-shaped inner wall of the shell, the roller rotates to drive the flow guide block to move, and one end of the arc b in the flow guide block, which is far away from the arc a, is attached to the arc-shaped inner wall of the shell to move, so that hot air is prevented from flowing along the inner wall of the shell, the hot air flows towards the direction of the through hole, the flow of the hot air flowing to the through hole is increased, the contact speed of coffee beans with the hot air is increased, and the drying efficiency of the coffee beans is increased.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a flow chart of a preparation method of the present invention;

FIG. 2 is a perspective view of the present invention;

FIG. 3 is a schematic structural view of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3;

FIG. 5 is a partial enlarged view of B in FIG. 4;

in the figure: the device comprises a shell 1, a motor 11, a temperature controller 12, a material taking door 13, a baking unit 14, a discharging port 15, a discharging door 16, a flow guide block 17, a flow guide plate 18, a sealing block 19, a roller 2, a convex block 21, a through hole 22 and a filter screen 23.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 5, the apparatus for preparing cold-extracted coffee according to the present invention comprises a housing 1, a motor 11, a temperature controller 12, a material-taking door 13, a roasting unit 14 and a controller; the controller controls the roasting unit 14; the top of the shell 1 is arc-shaped, and a discharge hole 15 is formed in the middle of the top of the shell 1; one side of the arc surface of the shell 1 is fixedly connected with a temperature controller 12, and one side of the adjacent arc surface of the shell 1 is fixedly connected with a motor 11; a roller 2 is arranged in the shell 1 and close to the top, the arc-shaped outer surface of the roller 2 corresponds to the arc-shaped inner wall of the top of the shell 1, one end of the roller 2 close to the motor 11 is fixedly connected with an output shaft in the motor 11, and one end of the roller 2 far away from the motor 11 is rotatably connected with the inner wall of the shell 1; the indoor type inner wall of the roller 2 is uniformly and circumferentially fixedly connected with a convex block 21, rectangular through holes 22 are formed in the positions, close to the convex blocks 21, of the roller 2, the through holes 22 are located on one side, away from the controller, of the convex blocks 21, and a filter screen 23 is fixedly connected in each through hole 22; a discharge door 16 is hinged to the middle position of the arc surface on the roller 2; the bottom has linked firmly and cures unit 14 in the casing 1, and the relative motor 11 one side of casing 1 articulates there is the material door 13 of getting, and gets material door 13 and be located cylinder 2 and cure between the unit 14.

When the coffee bean roasting machine is used, coffee beans are placed into the stoner, the stoner works at a speed of 125 kilograms of husks per hour, the coffee beans are husked, the coffee beans after the husking are sieved and cleaned, and the cleaned coffee beans are placed into the roasting machine for roasting; opening a discharging door 16 of a roller 2 in the roasting machine, pouring cleaned coffee beans into the roller 2, starting the roasting machine, and controlling a roasting unit 14 to work by a controller, wherein the roasting unit 14 in the invention is a conventional roasting mechanism in the field, the controller controls the roasting unit 14 to heat at 7-14 ℃ per minute until the temperature reaches the upper limit of the temperature value set by a temperature controller 12, and the temperature controller 12 controls the temperature in a shell 1 to be in the set constant temperature range; the motor 11 is started, the roasting unit 14 heats the roller 2, the roller 2 heats and roasts coffee beans, through the matching between the roller 2 and the through hole 22, the motor 11 drives the roller 2 to rotate, the roller 2 drives the coffee beans to roll on the arc-shaped inner wall of the roller 2, hot air enters the inside of the roller 2 through the through hole 22 to dry the coffee beans, when the coffee beans roll, the hot air blows the coffee beans, the drying uniformity of the coffee beans is increased, when the coffee beans are prevented from being heated and dried, one part of the surface of the coffee beans is dried for a long time, the coffee beans are heated unevenly, and the roasting effect of the coffee beans is influenced; due to the fact that the lug boss 21 is arranged, the lug boss 21 is driven by the movement of the roller 2 to move, after coffee beans contact with the lug boss 21, the lug boss 21 forms resistance to the coffee beans, the coffee beans are prevented from rolling, the coffee beans move along with the lug boss 21, when the lug boss 21 moves to a high position, the direction of the resistance of the lug boss 21 to the coffee beans changes, the coffee beans fall to the bottom of the roller 2 under the influence of gravity, at the moment, hot air blows towards the inside of the roller 2 through the through hole 22, the coffee beans contact with the hot air flowing upwards in the falling process, the contact area of the coffee beans and the hot air is increased, the drying uniformity of the coffee beans is increased, the coffee beans are prevented from contacting the inner surface of the roller 2 for a long time, the part of the coffee beans contacting the inner surface of the roller 2 is heated excessively, and the roasting effect of the coffee beans is influenced.

In an embodiment of the present invention, the cross section of the bump 21 is a right triangle, and one side of the bump 21 close to the through hole 22 is an inclined surface.

When the coffee bean harvester is used, the cross section of the lug 21 is arranged to be a right triangle, the rotary drum 2 rotates to drive the lug 21 to move, when the lug 21 moves to be positioned at the bottom of the rotary drum 2, one side surface of a right-angle side in the lug 21 is in a vertical state, coffee beans contact one side surface of the right-angle side of the lug 21, the lug 21 forms resistance to the coffee beans in motion, the coffee beans are prevented from continuously rolling, when the lug 21 moves to incline towards the bottom of the rotary drum 2, the coffee beans roll along one side surface of the right-angle side in the lug 21 and fall to the bottom of the rotary drum 2, the contact area between the lug 21 and the coffee beans is increased, the number of the coffee beans scooped up by the lug 21 is increased, the number of the coffee beans falling to the bottom of the rotary drum 2 and contacted with hot air is increased, and the drying speed of the coffee beans is increased; after the coffee beans were crossed in the hot-air contact, the hot-air flowed to the cylinder 2 top from cylinder 2 inside, and the hot-air receives the guide effect on inclined plane in the lug 21, flow direction through-hole 22 to discharge hot-air, increase the inside hot air flow rate of cylinder 2, and then increase the drying rate of coffee beans, avoid contacting the hot-air that contains moisture behind the coffee beans and stay inside cylinder 2 for a long time, influence the effect of baking of coffee beans.

As an embodiment of the present invention, the diameter of the through hole 22 close to the inside of the drum 2 is larger than the diameter of the through hole 22 far from the inside of the drum 2.

When the coffee bean drying machine is used, when hot air flows through the through holes 22, because the aperture of the through holes 22 close to the inner part of the roller 2 is larger than the aperture of the through holes 22 far away from the inner part of the roller 2, the space of the hot air flowing from one end of the through holes 22 close to the inner part of the roller 2 to one end of the through holes 22 far away from the inner part of the roller 2 is reduced, and the quality of the hot air cannot be accumulated in the through holes 22, so that the hot air flows through the through holes 22 at an accelerated speed, the flow speed of the hot air passing through the through holes 22 is increased, the flow speed of the hot air in the roller 2 is increased, and the drying speed of coffee beans is increased; when hot air flows into the roller 2, the inner wall of the hot air path through hole 22 is larger than the inner diameter of the through hole 22 far away from the roller 2 by setting the diameter of the through hole 22 close to the inner part of the roller 2, the hot air flows into the roller 2 along the inclined inner wall of the through hole 22, the range of the hot air flowing out of the through hole 22 is enlarged, the contact range of the hot air flowing out of the through hole 22 and coffee beans is enlarged, and the drying speed of the coffee beans is further increased.

As an embodiment of the invention, the guide blocks 17 are fixedly connected between the adjacent through holes 22 on the drum 2, and the cross section of each guide block 17 is composed of an arc a, an arc b and an arc c; the arc a is attached to the outer surface of the roller 2, two ends of the arc a are close to the adjacent through holes 22, the radius of the arc c is smaller than that of the arc a, the radius of the arc a is smaller than that of the arc b, and one end, far away from the arc a, of the arc b is attached to the arc inner wall of the shell 1.

When the coffee bean drying device is used, hot air flows into the roller 2 from the bottom of the shell 1, the hot air rises until contacting the surface of the arc c in the flow guide block 17 due to the arrangement of the flow guide block 17, the hot air is blown to the through hole 22 under the guiding action of the surface of the arc c in the flow guide block 17, so that the flow rate of the hot air flowing into the roller 2 is increased, the contact speed of coffee beans with the hot air is increased, the drying efficiency of coffee beans is further increased, and the problem that the drying effect of the coffee beans is reduced due to insufficient hot air flow in the process that the coffee beans fall over is avoided; because the one end laminating casing 1 arc inner wall that circular arc b kept away from circular arc a in the water conservancy diversion piece 17, cylinder 2 rotates and drives water conservancy diversion piece 17 motion, circular arc b keeps away from the one end laminating casing 1 arc inner wall of circular arc a in the water conservancy diversion piece 17 moves, it flows to casing 1 arc inner wall top along casing 1 inner wall directness to reduce hot-air, hot-air flows along casing 1 inner wall and is obstructed, make hot-air flow towards through-hole 22 direction, increase the flow of hot-air flow direction through-hole 22, thereby increase the speed of coffee beans contact hot-air, and then increase the drying efficiency of coffee beans.

As an embodiment of the present invention, the air deflectors 18 are symmetrically and fixedly connected to the arc-shaped inner wall of the housing 1, and one end of the air deflector 18 close to the drum 2 is located at the position of the arc-shaped inner wall of the housing 1, and one end of the air deflector 18 far from the drum 2 is located at the position close to the baking unit 14; the cross section of the guide plate 18 consists of an arc d and an arc e, the radius of the arc d is the same as that of the arc inner wall of the shell 1, and the radius of the arc e is larger than that of the arc d.

When the coffee bean drying device is used, the guide plates 18 are symmetrically arranged, hot air is blown to the roller 2 from the bottom of the shell 1, the two guide plates 18 are bent oppositely, so that the distance between the parts, close to the roller 2, of the two guide plates 18 is reduced, when the hot air is blown to the roller 2 under the guiding action of the surface of the arc e in the guide plates 18, the distance formed by the two guide plates 18 close to the baking unit 14 is larger than the distance formed by the two guide plates 18 close to the roller 2, the hot air is influenced by the change of the flow space, the hot air is accelerated to flow to the roller 2, the flow of the hot air flowing to the through holes 22 is increased, the contact speed of coffee beans with the hot air is increased, and the drying efficiency of the coffee beans is increased; through the cooperation between the guide block 17 and the guide plate 18, when the drum 2 rotates, a part of hot air contacts the surface of the circular arc b in the guide block 17, the hot air is guided by the surface of the circular arc b in the block to flow towards the through hole 22, and the hot air flowing towards the through hole 22 contacts the surface of the circular arc c in the guide block 17, so that the hot air flows into the through groove, the hot air generated by the roasting unit 14 is fully utilized to dry coffee beans, the hot air flow contacting the coffee beans is increased, and the dryness of the coffee beans is increased.

As an implementation mode of the invention, one end of the flow guide block 17 close to the inner wall of the shell 1 is fixedly connected with a sealing block 19, and the sealing block 19 is attached to the arc-shaped inner wall of the top of the shell 1.

When the flexible graphite packing is used, the rotary drum 2 rotates to drive the flow guide block 17 to rotate, the flow guide block 17 drives the sealing block 19 to be attached to the arc-shaped inner wall of the shell 1 to move, the sealing block 19 is made of flexible graphite packing, the flexible graphite packing is formed by processing and weaving flexible graphite composite coiled materials, and the flexible graphite packing has the characteristics of high temperature resistance, self lubrication and low friction coefficient; by arranging the sealing block 19, when one end of the arc b of the flow guide block 17, which is far away from the arc a, is attached to the arc-shaped inner wall of the shell 1 to move, the sealing performance of the flow guide block 17 on hot air is improved, so that the hot air flow contacting coffee beans is increased, and the dryness of the coffee beans is improved; owing to be provided with sealed piece 19 for the water conservancy diversion piece 17 is through sealed piece 19 indirect contact guide plate 18 and 1 arc inner wall of casing, protects guide plate 18 and 1 arc inner wall of casing, and then increases the leakproofness of water conservancy diversion piece 17 to the hot-air, prevents that water conservancy diversion piece 17 from moving for a long time, and water conservancy diversion piece 17 scrapes 1 inner wall of casing and guide plate 18 for a long time, leads to the sealed effect of water conservancy diversion piece 17 to the hot-air to reduce.

A method for preparing cold-extracted coffee is suitable for the cold-extracted coffee preparation equipment and comprises the following steps:

s1: putting coffee beans into a coring machine, working at a speed of 125 kg of husking per hour, husking the coffee beans, screening the coffee beans after husking, and screening to remove the coffee beans which do not meet the quality; washing the screened coffee beans with clean water to remove dirt on the surfaces of the coffee beans, and baking the cleaned coffee beans in a baking machine;

s2: starting the roasting machine, driving the roller 2 to rotate by the motor 11, controlling the roasting unit 14 to climb at 7-14 ℃ per minute by the controller until the temperature reaches the temperature value range set by the temperature controller 12, setting the temperature value range of the temperature controller 12 according to the variety of coffee beans, controlling the temperature in the shell 1 to be in the set constant temperature range by the temperature controller 12, and heating and drying the coffee beans at the rate of roasting 200 kilograms per hour; grinding and crushing the roasted coffee beans at a speed of 10 kg per hour by using a roller disc grinder;

s3: pulping the ground coffee powder, wherein the mixing ratio of cold water to the coffee powder is 8: 1; cold extraction treatment is carried out on the coffee solution after the mixing is finished in a low-temperature environment, and the cold extraction treatment time is at least more than 12 hours; and filtering the coffee bean powder in the coffee solution by using filter cloth after cold extraction treatment, and filtering the finished coffee solution to obtain the finished cold-extracted coffee.

The specific working process is as follows:

putting coffee beans into a coring machine, working at a speed of 125 kg of shelling per hour, shelling the coffee beans, screening and cleaning the shelled coffee beans, and putting the cleaned coffee beans into a roasting machine for roasting; opening a discharging door 16 of a roller 2 in the roasting machine, pouring cleaned coffee beans into the roller 2, starting the roasting machine, and controlling a roasting unit 14 to work by a controller, wherein the roasting unit 14 in the invention is a conventional roasting mechanism in the field, the controller controls the roasting unit 14 to heat at 7-14 ℃ per minute until the temperature reaches the upper limit of the temperature value set by a temperature controller 12, and the temperature controller 12 controls the temperature in a shell 1 to be in the set constant temperature range; the motor 11 is started, the roasting unit 14 heats the roller 2, the roller 2 heats and roasts the coffee beans, the motor 11 drives the roller 2 to rotate, the roller 2 drives the coffee beans to roll on the arc-shaped inner wall of the roller 2, hot air enters the roller 2 through the through hole 22 to dry the coffee beans, and the hot air blows the coffee beans when the coffee beans roll; the rotary drum 2 rotates to drive the lug 21 to move, when the lug 21 moves to be positioned at the bottom of the rotary drum 2, one side surface of a right-angle side in the lug 21 is in a vertical state, coffee beans contact one side surface of the right-angle side of the lug 21, the lug 21 forms resistance to the coffee beans in motion to prevent the coffee beans from continuously rolling, and when the lug 21 moves to incline towards the bottom of the rotary drum 2, the coffee beans roll along one side surface of the right-angle side in the lug 21 and fall to the bottom of the rotary drum 2; when the hot air contacts the coffee beans, the hot air flows from the inside of the drum 2 to the top of the drum 2, and the hot air is guided by the inclined surface of the protrusion 21 to flow to the through hole 22, thereby discharging the hot air; the space of the hot air flowing from one end of the through hole 22 close to the interior of the drum 2 to one end of the through hole 22 far away from the interior of the drum 2 becomes smaller, and the quality of the hot air cannot be accumulated in the through hole 22, so that the hot air flows through the through hole 22 in an accelerated manner; when the hot air flows into the drum 2, the hot air passes through the inner wall of the through hole 22, and the hot air flows into the drum 2 along the inclined inner wall of the through hole 22, so that the range of the hot air flowing out of the through hole 22 is enlarged, and the contact range of the hot air flowing out of the through hole 22 and coffee beans is enlarged; hot air flows into the roller 2 from the bottom of the shell 1, rises until contacting the surface of the arc c in the flow guide block 17, and is blown to the through hole 22 under the guiding action of the surface of the arc c in the flow guide block 17; the roller 2 rotates to drive the flow guide block 17 to move, one end, far away from the arc a, of the arc b in the flow guide block 17 is attached to the arc-shaped inner wall of the shell 1 to move, hot air is reduced to directly flow to the top of the arc-shaped inner wall of the shell 1 along the inner wall of the shell 1, the hot air is blocked from flowing along the inner wall of the shell 1, and the hot air flows towards the direction of the through hole 22; hot air is blown to the roller 2 from the bottom of the shell 1, the two guide plates 18 are bent oppositely, so that the distance between the parts, close to the roller 2, of the two guide plates 18 is reduced, when the hot air is blown to the roller 2 under the guiding action of the surface of the arc e in the guide plates 18, the distance formed by the two guide plates 18 close to the baking unit 14 is larger than the distance formed by the two guide plates 18 close to the roller 2, and the hot air is influenced by the change of the flowing space, so that the hot air flows to the roller 2 in an accelerated manner; the roller 2 rotates to drive the flow guide block 17 to rotate, the flow guide block 17 drives the sealing block 19 to be attached to the arc-shaped inner wall of the shell 1 to move, and the sealing performance of the flow guide block 17 to hot air is improved, so that the hot air flow contacting with coffee beans is increased, and the dryness of the coffee beans is improved.

The front, the back, the left, the right, the upper and the lower are all based on the figure 2 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.