Production equipment and production process of asparagus tea

Abstract

The invention relates to the technical field of tea processing equipment, in particular to asparagus tea production equipment and a manufacturing process thereof.The asparagus tea production equipment comprises a support body, the support body is rotatably connected with a supporting plate at one end, the asparagus tea production equipment further comprises two supporting seats, first lantern rings are fixed to the top ends of the supporting seats, and the supporting seats are oppositely arranged on the supporting plate; under the action of the heat energy recovery mechanism and the dehumidification mechanism, hot air flow in the rotary cylinder preheats asparagus raw materials in the feeding hopper after dehumidification, high-purity alumina fibers can greatly reduce heat loss in the rotary cylinder, heat energy generated by the equipment is efficiently utilized, and compared with traditional equipment, more energy is saved; the hot air flow heats the asparagus raw materials from outside to inside, and the microwaves can heat the asparagus raw materials from inside to outside, so that the fixation efficiency is greatly improved, and the uniform heating effect enables the finished asparagus tea to be good in color and high in freshness.

Description

Technical Field

[0001] The invention relates to the technical field of tea processing equipment, in particular to production equipment for asparagus tea and a manufacturing process thereof. Background Art

[0002] Asparagus tea is made from tender asparagus stems. After being cut, the length is 3 to 3.5 cm. It is generally conical or cylindrical, and its diameter is greater than the thickness of leaf-shaped tea leaves such as green tea and Pu'er tea. In order to ensure the final quality, it takes a longer time to kill the green leaves. When killing the green leaves of the cut asparagus stems, there are usually two types of equipment used in the prior art:

[0003] 1. Drum type fixing machine:

[0004] The drum tea-withering machine is usually equipped with a stove or electric stove inside. These heating devices transfer heat to the tea leaves inside through the drum, so that it can quickly reach the temperature required for withering. This method is simple to operate and has a fast processing speed, but it is difficult for the drum to heat evenly, which leads to the low quality of asparagus tea due to uneven heating temperature.

[0005] 2. Steam hot air blower:

[0006] Steam hot air blowers often use high-temperature and high-pressure steam to wither the asparagus tea. They have strong penetrating power and a more uniform heating effect than drum-type withering machines. However, due to the high moisture content in the steam and the fact that the asparagus tea is also heated from the outside to the inside, the asparagus tea after withering has poor color and poor freshness.

[0007] The above two devices are usually used to kill leaf tea leaves, but the killing effect on asparagus tea is poor. There is an urgent need for a device suitable for killing asparagus tea. At the same time, the volume of the equipment for killing asparagus tea is limited. For some larger asparagus tea production companies, how to ensure the killing quality while improving production efficiency is also an urgent problem to be solved. To this end, we propose a production equipment and manufacturing process for asparagus tea. Summary of the invention

[0008] In order to solve the above technical problems, the present invention provides a production device for asparagus tea and a production process thereof, comprising a support body, one end of which is rotatably connected to a support plate, and further comprising:

[0009] There are two support seats, each of which has a first ring fixed on the top and is arranged opposite to the support plate;

[0010] A rotary drum, wherein both ends of the rotary drum are rotatably connected to the first sleeve ring, and the inner wall is provided with a spiral lifting plate, wherein the lifting plates are provided in a plurality and are arranged in a uniform annular array;

[0011] A driving mechanism, which is mounted on the support plate and connected to the rotary drum, and drives the rotary drum to rotate;

[0012] Dielectric ceramics, wherein the dielectric ceramics are sleeved on the rotary drum;

[0013] An outer cylinder, wherein the outer cylinder is sleeved on the rotating cylinder, and both ends of the outer cylinder are fixed to the two sides of the rotating cylinder, and high-purity alumina fibers are filled between the outer cylinder and the dielectric ceramic;

[0014] A microwave generator, wherein the microwave generator is provided in a plurality and arranged in a circular array on the outer wall of the outer cylinder;

[0015] An upper hopper, the upper hopper is fixedly connected to the first sleeve ring at the upper end of the rotary drum;

[0016] A heat recovery mechanism, which is installed on the rotary drum and connected to the upper hopper, and which extracts air in the rotary drum into the upper hopper to preheat the asparagus raw materials in the upper hopper;

[0017] The dehumidification mechanism is connected to the heat recovery mechanism to dehumidify the hot air in the heat recovery mechanism.

[0018] Preferably, the driving mechanism comprises a servo motor installed at the bottom of the support plate, a first sprocket is sleeved on the driving shaft of the servo motor, a second sprocket is sleeved on the end of the rotary drum close to the upper hopper, and the first sprocket and the second sprocket are connected by a chain.

[0019] Preferably, the heat energy recovery mechanism includes a V-shaped tube installed on the discharge end of the rotary drum, one end of the V-shaped tube is fixed to the upper half of the discharge port of the rotary drum, and the other end is connected to a closed cylinder, a first conduit is installed through the closed cylinder, one end of the first conduit is connected to the upper hopper, and the other end is located inside the closed cylinder, a fixing rod is installed in the first conduit, a second motor is installed on the fixing rod, a first turbine is installed on the output shaft of the second motor, and the blades of the first turbine are close to the inner wall of the first conduit.

[0020] Preferably, the dehumidification mechanism includes a second ring fixed to the output shaft of the second motor through a support frame, the second ring is rotatably connected to the first conduit, a second turbine is sleeved on the second ring, the second turbine is fixedly connected to the second ring, a second conduit is rotatably connected to the second ring, the second conduit has the same diameter as the first conduit, an end of the second conduit located away from the first conduit is connected to one end of the V-shaped tube, a water-cooling pipe is installed through the closed cylinder, the water-cooling pipe can be divided into three sections, the middle section has a large diameter and is located inside the second conduit, and the upper and lower sections have small diameters, all of which penetrate the second conduit and the closed cylinder in turn and are connected to the water circulation system, and a drain pipe is arranged between the part of the second conduit below which is penetrated by the water-cooling pipe and the water-cooling pipe, and an exhaust pipe is connected to the bottom of the closed cylinder.

[0021] Preferably, the water-cooling pipe portion between the sealed tube and the second conduit is sleeved with a temperature insulating sleeve, and a heat conductive sheet is installed through the first conduit. There are several heat conductive sheets, one of which is located inside the first conduit and the other is located in the space between the first conduit and the sealed tube.

[0022] Preferably, an angle adjustment mechanism is installed on the bracket body, and the angle adjustment mechanism adjusts the angle between the rotating drum and the ground, thereby changing the time required for the asparagus raw materials to pass through the rotating drum. The angle adjustment mechanism includes a slide rail relatively arranged at the bottom of the support plate, and a hydraulic rod is installed on the bracket body. A cross bar is fixed to the top of the hydraulic rod, and both ends of the cross bar are respectively located in the slide rail.

[0023] Preferably, a discharge cylinder is installed at the lower half of the discharge port of the rotary drum, and the discharge cylinder is curved and long.

[0024] A production process of asparagus tea: using the production equipment of asparagus tea, comprising the following steps:

[0025] S1: cutting the harvested asparagus stems to 3-3.5 cm, and then spreading the cut asparagus stems flat in a well-ventilated room for drying. This operation helps to evenly distribute the moisture in the asparagus raw materials, paving the way for the subsequent withering work;

[0026] S2: According to the required heating time of the asparagus raw materials, the angle between the connecting part of the support plate and the ground is adjusted by the hydraulic rod, so as to control the time required for the asparagus raw materials to pass through the rotary drum;

[0027] S3: placing the dried asparagus raw materials in the upper hopper and turning on the microwave generator, the microwave generator uniformly heats the rotary drum through dielectric ceramics, the temperature is controlled at 85-95° C., the asparagus raw materials inside the rotary drum are heated, and the high-purity alumina fiber prevents the temperature inside the rotary drum from losing too quickly;

[0028] S4: When the microwave generator is turned on, the second motor is turned on synchronously, driving the first turbine and the second turbine to rotate synchronously, and extracting the hot air from the discharge port of the rotary drum. During the withering process, the high temperature causes a large amount of water in the asparagus raw material to be lost, resulting in a high humidity in the air in the rotary drum. The extracted high-temperature and high-humidity gas enters two different spaces respectively: one part enters the interior of the second conduit, and is cooled by the water-cooling tube. The gas passing through the surface of the water-cooling tube is cooled and liquefied, thereby reducing the humidity of the air after passing through the second conduit, and then the asparagus raw material in the upper hopper is preheated through the first conduit; the other part enters the space between the second conduit and the closed drum, maintaining high temperature and high humidity, and heats the gas in the first conduit through heat transfer through the first conduit, thereby increasing the temperature of the gas in the first conduit and enhancing the preheating effect of the asparagus raw material in the upper hopper;

[0029] S5: After the single fixation, the semi-finished asparagus tea is discharged through the discharging barrel, and the semi-finished asparagus tea in the discharging barrel is collected and subjected to secondary fixation after air cooling. The secondary fixation raises the temperature to 220-240° C., and the other steps are the same as above;

[0030] S6: rolling, spreading and drying the semi-finished asparagus tea after the second killing, and the moisture content of the final product is 8% to 10%.

[0031] The present invention has at least the following beneficial effects:

[0032] 1. Under the action of the heat recovery mechanism and the dehumidification mechanism, the hot air flow in the rotary drum preheats the asparagus raw materials in the upper hopper after dehumidification, and the high-purity alumina fiber can greatly reduce the heat loss in the rotary drum. The heat energy generated by this equipment is efficiently utilized, which is more energy-saving than traditional equipment;

[0033] 2. Dielectric ceramics can homogenize microwaves, making the heating effect more uniform. At the same time, the heat recovery mechanism serves as the power source and the microwave generator serves as the heating source. Finally, a hot air flow will be generated in the rotary drum. The hot air flow heats the asparagus raw materials from the outside to the inside, and the microwave energy heats the asparagus raw materials from the inside to the outside. The withering efficiency is greatly improved, and the uniform heating effect makes the produced asparagus tea have a good color and high freshness.

[0034] 3. The curved discharging barrel can disperse the clumped asparagus tea semi-finished products during the discharging process, thus preventing the asparagus tea semi-finished products in the center from being suffocated by heat for a long time. At the same time, the long length prevents the high-temperature asparagus tea semi-finished products just discharged from the rotary drum from directly contacting the low-temperature asparagus tea semi-finished products that have been discharged for a period of time in a short period of time, which has a positive effect on the color and quality of the finished asparagus tea. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0036] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0037] Figure 3 For the present invention Figure 2 Schematic diagram of the structure at A in the middle;

[0038] Figure 4 For the present invention Figure 2 Schematic diagram of the structure at B in the middle;

[0039] Figure 5 It is a schematic diagram of the cross-sectional structure of the heat energy recovery mechanism of the present invention;

[0040] Figure 6 For the present invention Figure 5 Schematic diagram of the structure at C in the middle;

[0041] Figure 7 This is a schematic diagram of the angle adjustment mechanism structure of the present invention;

[0042] Figure 8 For the present invention Figure 7 Schematic diagram of the structure at D in the middle;

[0043] Fig. 9 Schematic diagram of the airflow direction inside the device of the present invention.

[0044] In the figure: 1, support body; 2, support plate; 3, support seat; 31, first ring; 4, rotary drum; 41, copying plate; 42, discharge drum; 5, driving mechanism; 51, servo motor; 52, first sprocket; 53, second sprocket; 54, chain; 6, dielectric ceramic; 7, outer cylinder; 71, high-purity alumina fiber; 8, microwave generator; 9, upper hopper; 10, heat recovery mechanism; 101, V-shaped tube; 102, closed cylinder ; 103, first conduit; 104, fixing rod; 105, second motor; 106, first turbine; 11, dehumidification mechanism; 111, support frame; 112, second ring; 113, second turbine; 114, second conduit; 115, water cooling pipe; 116, exhaust pipe; 117, drain pipe; 12, thermal insulation sleeve; 13, angle adjustment mechanism; 131, slide rail; 132, hydraulic rod; 133, cross bar; 14, heat conducting plate. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] Embodiment 1:

[0047] See also Figure 1-9 The present invention provides a technical solution: an asparagus tea production device, comprising a support body 1, a support plate 2 is installed on the top of the support body 1, and one end of the support plate 2 is rotatably connected to the support body 1, and also includes:

[0048] There are two support seats 3, each of which has a first ring 31 fixed on the top and is relatively arranged on the support plate 2;

[0049] The rotary drum 4 has two ends which are rotatably connected to the first sleeve ring 31, and the inner wall is provided with a spiral lifting plate 41, and there are a plurality of the lifting plates 41, which are arranged in a uniform annular array;

[0050] A driving mechanism 5, which is mounted on the support plate 2 and connected to the rotary drum 4, and drives the rotary drum 4 to rotate;

[0051] The dielectric ceramic 6 is sleeved on the rotary drum 4;

[0052] The outer cylinder 7 is sleeved on the rotating cylinder 4, and the two ends of the outer cylinder 7 are fixed to the two sides of the rotating cylinder 4, and the space between the outer cylinder 7 and the dielectric ceramic 6 is filled with high-purity alumina fibers 71;

[0053] A microwave generator 8, wherein the microwave generator 8 is provided in a plurality and arranged in a circular array on the outer wall of the outer cylinder 7;

[0054] The upper hopper 9 is fixedly connected to the first sleeve ring 31 at the upper end of the rotary drum 4;

[0055] A heat recovery mechanism 10 is installed on the rotary drum 4 and connected to the upper hopper 9. The heat recovery mechanism 10 extracts air in the rotary drum 4 into the upper hopper 9 to preheat the asparagus raw materials in the upper hopper 9.

[0056] The dehumidification mechanism 11 is connected to the heat recovery mechanism 10 to dehumidify the hot air in the heat recovery mechanism 10 .

[0057] The driving mechanism 5 includes a servo motor 51 installed at the bottom of the support plate 2, a first sprocket 52 is sleeved on the driving shaft of the servo motor 51, a second sprocket 53 is sleeved on the end of the rotary drum 4 close to the upper hopper 9, and the first sprocket 52 and the second sprocket 53 are connected by a chain 54.

[0058] The heat energy recovery mechanism 10 includes a V-shaped tube 101 installed on the discharge end of the rotary drum 4, one end of the V-shaped tube 101 is fixed to the upper half of the discharge port of the rotary drum 4, and the other end is connected to a closed cylinder 102, a first conduit 103 is installed through the closed cylinder 102, one end of the first conduit 103 is connected to the upper hopper 9, and the other end is located inside the closed cylinder 102, a fixing rod 104 is installed in the first conduit 103, a second motor 105 is installed on the fixing rod 104, and a first turbine 106 is installed on the output shaft of the second motor 105.

[0059] The dehumidification mechanism 11 includes a second ring 112 fixed to the output shaft of the second motor 105 through a support frame 111, the second ring 112 is rotatably connected to the first conduit 103, a second turbine 113 is sleeved on the second ring 112, the second turbine 113 and the second ring 112 are fixedly connected, a second conduit 114 is rotatably connected to the second ring 112, the second conduit 114 has the same diameter as the first conduit 103, and the second conduit 114 is located away from the first conduit 103. One end of the V-shaped tube 101 is connected with one end of the V-shaped tube 101, and a water-cooling tube 115 is installed through the closed tube 102. The water-cooling tube 115 can be divided into three sections: upper, middle and lower. The middle section has a large diameter and is located inside the second conduit 114. The upper and lower sections have small diameters and penetrate the second conduit 114 and the closed tube 102 in sequence and are connected to the water circulation system. A drainage pipe 117 is arranged between the part of the bottom of the second conduit 114 penetrated by the water-cooling tube 115 and the water-cooling tube 115, and an exhaust pipe 116 is connected to the bottom of the closed tube 102.

[0060] The water-cooling tube 115 is located between the sealed tube 102 and the second conduit 114 and is partially sleeved with an insulating sleeve 12. A heat conducting sheet 14 is installed through the first conduit 103. There are several heat conducting sheets 14, one of which is located inside the first conduit 103 and the other is located in the space between the first conduit 103 and the sealed tube 102.

[0061] An angle adjustment mechanism 13 is installed on the bracket body 1. The angle adjustment mechanism 13 adjusts the angle between the rotary drum 4 and the ground, thereby changing the time required for the asparagus raw materials to pass through the rotary drum 4. The angle adjustment mechanism 13 includes a slide rail 131 relatively arranged at the bottom of the support plate 2. A hydraulic rod 132 is installed on the bracket body 1. A cross bar 133 is fixed to the top of the hydraulic rod 132. The two ends of the cross bar 133 are respectively located in the two slide rails 131.

[0062] A discharge cylinder 42 is installed at the lower half of the discharge port of the rotary cylinder 4, and the discharge cylinder 42 is curved.

[0063] Since the temperature of the semi-finished asparagus tea just discharged from the rotary drum 4 is high, while the temperature of the semi-finished asparagus tea that has been discharged for a while is low, if they are directly in contact in a short time, it will have a negative impact on the color of the finished asparagus tea. The curved discharge drum 42 prolongs the discharge time, and when the semi-finished asparagus tea is in the curved part of the discharge drum 42, it is easier to disperse the clumped asparagus tea semi-finished products, so as to avoid the heat of the semi-finished asparagus tea in the center cannot be dissipated, affecting the quality.

[0064] A process for making asparagus tea: using the above-mentioned asparagus tea production equipment, comprising the following steps:

[0065] S1: cutting the harvested asparagus stems to 3-3.5 cm, and then spreading the cut asparagus stems flat in a well-ventilated room for drying. This operation helps to evenly distribute the moisture in the asparagus raw materials, paving the way for the subsequent withering work;

[0066] S2: According to the required heating time of the asparagus raw materials, the angle between the connecting part of the support plate 2 and the ground is adjusted by the hydraulic rod 132, so as to control the time required for the asparagus raw materials to pass through the rotary drum 4;

[0067] S3: placing the dried asparagus raw materials in the upper hopper 9 and turning on the microwave generator 8. The microwave generator 8 evenly heats the rotary drum 4 through the dielectric ceramic 6. The temperature is controlled at 85-95° C. to heat the asparagus raw materials inside the rotary drum 4. The high-purity alumina fiber 71 prevents the temperature inside the rotary drum 4 from losing too quickly.

[0068] S4: When the microwave generator 8 is turned on, the second motor 105 is turned on synchronously, driving the first turbine 106 and the second turbine 113 to rotate synchronously, and extracting the hot air from the discharge port of the rotary drum 4. During the withering process, the high temperature causes a large amount of water in the asparagus raw material to be lost, resulting in a high humidity in the air in the rotary drum 4. The extracted high-temperature and high-humidity gas enters two different spaces respectively: one part enters the interior of the second conduit 114, and is cooled by the water-cooling tube 115. The gas passing through the surface of the water-cooling tube 115 is cooled and liquefied, thereby reducing the humidity of the air after passing through the second conduit 114, and then the asparagus raw material in the upper hopper 9 is preheated through the first conduit 103; the other part enters the space between the second conduit 114 and the sealed cylinder 102, maintaining high temperature and high humidity, and heats the gas in the first conduit 103 through heat transfer from the first conduit 103, thereby increasing the temperature of the gas in the first conduit 103 and strengthening the preheating effect of the asparagus raw material in the upper hopper 9;

[0069] S5: the semi-finished asparagus tea after the single fixation is discharged through the discharge barrel 42, and the semi-finished asparagus tea in the discharge barrel 42 is collected and subjected to secondary fixation after air cooling, and the secondary fixation raises the temperature to 220-240° C., and the other steps are the same as above;

[0070] S6: rolling, spreading and drying the semi-finished asparagus tea after the second killing, and the moisture content of the final product is 8% to 10%.

[0071] The working principle of the present invention is as follows: due to the different origins and growth environments of asparagus tea, asparagus tea will be divided into different levels and different lengths of greening will be performed. The staff will change the angle between the rotary drum 4 and the ground according to the length of time the asparagus raw materials need to be heated. The operation is as follows: the hydraulic rod 132 is turned on. As the hydraulic rod 132 is extended, the cross bar 133 at the top of the hydraulic rod 132 moves in the slide rail 131, and the support plate 2 and the support plate 2 connecting component are rotated with the connection between the bracket body 1 and the support plate 2 as the center of the circle. At this time, the angle between the rotary drum 4 and the ground changes. Under the action of gravity, the larger the angle between the rotary drum 4 and the ground, the faster the asparagus raw materials slide down and the shorter the greening time.

[0072] After the angle between the rotary drum 4 and the ground is adjusted, the microwave generator 8 is turned on while adding the asparagus raw material to the upper hopper 9. The microwave generator 8 heats the asparagus raw material from the inside out through the high-purity alumina fiber 71, the dielectric ceramic 6, and the rotary drum 4. The high-purity alumina fiber 71 does not react with microwaves and has excellent heat preservation performance. The dielectric ceramic 6 can homogenize the microwaves to make the temperature of each part of the rotary drum 4 consistent, which is of great help to the color formation of the finished asparagus tea. The servo motor 51 and the second motor 105 are turned on. The servo motor 51 drives the rotary drum 4 to rotate through the first sprocket 52, the second sprocket 53, and the chain 54. The rotary drum 4 rotates through the spiral shovel 41 on its inner wall to heat the asparagus raw material. The ingredients are stir-fried, and a large amount of water in the asparagus raw materials is lost, and the air humidity in the rotary drum 4 increases. At the same time, the second motor 105 drives the first turbine 106 and the second turbine 113 to rotate, and the high-temperature and high-humidity air in the rotary drum 4 is sucked by negative pressure through the V-shaped tube 101. A part of the high-temperature and high-humidity gas in the V-shaped tube 101 enters the second conduit 114, and then contacts the middle part of the water-cooling tube 115. The high-temperature and high-humidity gas is cooled and liquefied, and the humidity of the gas is reduced. The water droplets condensed on the surface of the water-cooling tube 115 are discharged from the drain pipe 117 along the water-cooling tube 115, and the temperature of the gas in the second conduit 114 is reduced while the humidity is reduced, and then enters the first conduit 103 through the second conduit 114;

[0073] Another part of the high-temperature and high-humidity gas passes through the V-shaped tube 101 and enters the space between the second conduit 114 and the sealed cylinder 102. The water-cooling tube 115 in the space is wrapped by the insulation sleeve 12, and the gas temperature will not be affected by the water-cooling tube 115. Under the guidance of the second turbine 113, the gas is discharged from the exhaust pipe 116 close to the upper hopper 9. During this period, the temperature of the space between the water-cooling tube 115 and the air outlet of the V-shaped tube 101 is the same and does not change. The gas temperature in the second conduit 114 and the first conduit 103 after passing through the water-cooling tube 115 is relatively low. This part of the high-temperature and high-humidity gas passing through the V-shaped tube 101 will use the heat conducting sheet 14 and the first conduit 103 to heat the gas in the first conduit 103 and the second conduit 114 between the water-cooling tube 115 and the upper hopper 9, thereby increasing the temperature of the gas entering the upper hopper 9 from the first conduit 103 after dehumidification, increasing the preheating effect, and the V-shaped tube 101 can effectively prevent the semi-finished asparagus tea from directly entering the sealed cylinder 102.

[0074] Finally, the semi-finished asparagus tea product after single-time killing is discharged through the discharging barrel 42.

[0075] The second motor 105 drives the first turbine 106 and the second turbine 113 to rotate, which will generate flow of gas in the rotary drum 4 through the first duct 103, the second duct 114, the closed cylinder 102 and the V-shaped tube 101. On the one hand, it is convenient to extract moisture. On the other hand, the temperature of the gas increases due to the action of microwave energy while the gas flows. The hot air flow kills the asparagus raw materials from the outside to the inside, and the microwave energy kills the asparagus raw materials from the inside to the outside. At the same time, the asparagus raw materials are preheated when passing through the upper hopper 9, which greatly shortens the time required for killing the asparagus raw materials. The production efficiency is high, the heat energy is efficiently utilized, and the uniform heating effect makes the finished asparagus tea have good color and high freshness.

[0076] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0077] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A production device for asparagus tea, comprising a support body (1), a support plate (2) being mounted on the top of the support body (1), and one end of the support plate (2) being rotatably connected to the support body (1), characterized in that: Also includes: Support seats (3), the support seats (3) having two each having a first ring (31) fixed at the top end thereof, and being arranged opposite to each other on the support plate (2); A rotary drum (4), wherein both ends of the rotary drum (4) are rotatably connected to the first sleeve ring (31), and the inner wall is provided with a spiral lifting plate (41), wherein the lifting plates (41) are provided in a plurality and are arranged in a uniform annular array; A driving mechanism (5), wherein the driving mechanism (5) is mounted on the support plate (2) and connected to the rotary drum (4), and the driving mechanism (5) drives the rotary drum (4) to rotate; A dielectric ceramic (6), wherein the dielectric ceramic (6) is sleeved on the rotating drum (4); An outer cylinder (7), wherein the outer cylinder (7) is sleeved on the rotating cylinder (4), and both ends of the outer cylinder (7) are fixed to the two side parts of the rotating cylinder (4), and high-purity alumina fibers (71) are filled between the outer cylinder (7) and the dielectric ceramic (6); A microwave generator (8), wherein the microwave generator (8) is provided in a plurality and arranged in a circular array on the outer wall of the outer cylinder (7); A loading hopper (9), wherein the loading hopper (9) is fixedly connected to a first sleeve ring (31) at a loading end of the rotary drum (4); A heat recovery mechanism (10), the heat recovery mechanism (10) being installed on the rotary drum (4) and connected to the upper hopper (9), the heat recovery mechanism (10) drawing air from the rotary drum (4) into the upper hopper (9) to preheat the asparagus raw material in the upper hopper (9); A dehumidification mechanism (11), wherein the dehumidification mechanism (11) is connected to the heat recovery mechanism (10) and dehumidifies the hot air in the heat recovery mechanism (10).

2. The asparagus tea production equipment according to claim 1, characterized in that: The driving mechanism (5) comprises a servo motor (51) mounted at the bottom of the support plate (2); a first sprocket (52) is sleeved on the driving shaft of the servo motor (51); a second sprocket (53) is sleeved on one end of the rotary drum (4) close to the upper hopper (9); the first sprocket (52) and the second sprocket (53) are connected by a chain (54).

3. The production equipment of an asparagus tea according to claim 2, characterized in that: The heat energy recovery mechanism (10) comprises a V-shaped tube (101) installed on the discharge end of the rotary drum (4), one end of the V-shaped tube (101) is fixed to the upper half of the discharge port of the rotary drum (4), and the other end is connected to a sealed drum (102), a first conduit (103) is installed through the sealed drum (102), one end of the first conduit (103) is connected to the upper hopper (9), and the other end is located inside the sealed drum (102), a fixing rod (104) is installed in the first conduit (103), a second motor (105) is installed on the fixing rod (104), and a first turbine (106) is installed on the output shaft of the second motor (105).

4. The production equipment of asparagus tea according to claim 3, characterized in that: The dehumidification mechanism (11) comprises a second sleeve (112) fixed to the output shaft of the second motor (105) through a support frame (111); the second sleeve (112) is rotatably connected to the first conduit (103); a second turbine (113) is sleeved on the second sleeve (112); the second turbine (113) and the second sleeve (112) are fixedly connected; a second conduit (114) is rotatably connected to the second sleeve (112); the second conduit (114) and the first conduit (103) have the same diameter; and the second conduit (114) is located at an end away from the first conduit (103) and is connected to the V-shaped conduit. The sealed tube (102) is connected to one end of the second conduit (101), and a water cooling pipe (115) is installed through the sealed tube (102). The water cooling pipe (115) can be divided into three sections: upper, middle and lower. The middle section has a large diameter and is located inside the second conduit (114). The upper and lower sections have small diameters and penetrate the second conduit (114) and the sealed tube (102) in sequence and are connected to the water circulation system. A drainage pipe (117) is arranged between the part of the bottom of the second conduit (114) penetrated by the water cooling pipe (115) and the water cooling pipe (115). The water cooling pipe (115) is located inside the second conduit (114). The bottom of the sealed tube (102) is connected to an exhaust pipe (116).

5. The production equipment of asparagus tea according to claim 4, characterized in that: The water-cooling tube (115) is partially sleeved with a temperature-insulating sleeve (12) between the sealed tube (102) and the second conduit (114); a heat-conducting sheet (14) is installed through the first conduit (103); there are a plurality of heat-conducting sheets (14), one of which is located inside the first conduit (103) and the other is located in the space between the first conduit (103) and the sealed tube (102).

6. The production equipment of asparagus tea according to claim 5, characterized in that: An angle adjustment mechanism (13) is installed on the support body (1), and the angle adjustment mechanism (13) adjusts the angle between the rotary drum (4) and the ground, thereby changing the time required for the asparagus raw materials to pass through the rotary drum (4). The angle adjustment mechanism (13) comprises a slide rail (131) relatively arranged at the bottom of the support plate (2). A hydraulic rod (132) is installed on the support body (1), and a cross bar (133) is fixed to the top of the hydraulic rod (132). The two ends of the cross bar (133) are respectively located in the two slide rails (131).

7. The asparagus tea production equipment according to claim 6, characterized in that: A discharge cylinder (42) is installed at the lower half of the discharge port of the rotary cylinder (4), and the discharge cylinder (42) is curved.

8. A process for producing asparagus tea: characterized in that: The production equipment of asparagus tea according to any one of claims 1 to 7 comprises the following steps: S1: cutting the harvested asparagus stems to 3-3.5 cm, and then spreading the cut asparagus stems flat in a well-ventilated room for drying. This operation helps to evenly distribute the moisture in the asparagus raw materials, paving the way for the subsequent withering work; S2: According to the required heating time of the asparagus raw material, the angle between the connection part of the support plate (2) and the ground is adjusted by the hydraulic rod (132), so as to control the time required for the asparagus raw material to pass through the rotary drum (4); S3: placing the dried asparagus raw materials in the upper hopper (9), and turning on the microwave generator (8); the microwave generator (8) uniformly heats the rotary drum (4) through the dielectric ceramic (6); the temperature is controlled at 85 to 95° C., and the asparagus raw materials inside the rotary drum (4) are heated; the high-purity alumina fiber (71) prevents the temperature inside the rotary drum (4) from losing too quickly; S4: When the microwave generator (8) is turned on, the second motor (105) is turned on synchronously, driving the first turbine (106) and the second turbine (113) to rotate synchronously, thereby extracting hot air from the outlet of the rotary drum (4). During the withering process, the high temperature causes a large amount of water in the asparagus raw material to be lost, resulting in a high humidity in the air in the rotary drum (4). The extracted high-temperature and high-humidity gas enters two different spaces respectively: one part enters the interior of the second conduit (114), is cooled by the water cooling tube (115), and passes through the water cooling tube (115). The gas on the surface (115) is cooled and liquefied, reducing the humidity of the air after passing through the second conduit (114), and then preheating the asparagus raw materials in the upper hopper (9) through the first conduit (103); the other part enters the space between the second conduit (114) and the sealed cylinder (102), maintaining high temperature and high humidity, and heats the gas in the first conduit (103) through heat conduction through the first conduit (103), thereby increasing the temperature of the gas in the first conduit (103) and enhancing the preheating effect of the asparagus raw materials in the upper hopper (9); S5: After the single fixation, the semi-finished asparagus tea is discharged through the discharge tube (42), and the semi-finished asparagus tea in the discharge tube (42) is collected and subjected to secondary fixation after air cooling. The secondary fixation raises the temperature to 220-240° C., and the other steps are the same as above; S6: rolling, spreading and drying the semi-finished asparagus tea after the second killing, and the moisture content of the final product is 8% to 10%.

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