Jasmine tea dynamic vacuum low-temperature microwave drying equipment and process

Abstract

This invention discloses a dynamic vacuum low-temperature microwave drying equipment and process for jasmine tea, relating to the field of jasmine tea processing technology. The invention includes a main body of a vacuum microwave drying equipment. Inside the main body of the equipment is a rotating assembly, which includes a turntable rotatably mounted on the inner wall of the main body. The turntable is driven by a motor. Several support columns are uniformly fixed around the outer circumference of the turntable. A hanging basket is rotatably mounted on the outside of the support columns. Through the setting of a thin-spreading device, the five-centimeter gap between the limiting plate and the sliding plate restricts the thickness of the jasmine tea raw material spread on the fixed mesh plate and the U-shaped mesh plate, thereby ensuring that the thin-spread thickness of the jasmine tea raw material entering the main body of the vacuum microwave drying equipment is less than or equal to five centimeters. A thin-spread thickness of less than or equal to five centimeters is a safe threshold for microwave penetration depth.

Description

Technical Field

[0001] This invention relates to the field of flower tea processing technology, specifically to a dynamic vacuum low-temperature microwave drying equipment and process for jasmine tea. Background Technology

[0002] The vacuum microwave drying equipment for scented tea is a highly efficient tea processing device that combines vacuum and microwave technology to quickly remove moisture from tea leaves at low temperatures. This drying method effectively preserves the color, aroma, and nutrients of scented tea, avoiding heat damage caused by traditional drying methods. The equipment is easy to operate, consumes little energy, and is suitable for the production of various herbal teas, improving production efficiency and product quality, thus meeting the needs of modern tea processing enterprises.

[0003] Chinese patent CN211503556U discloses a vacuum microwave drying device for rose petals, comprising a main body, control buttons, a connecting frame, a microwave generator, a waste heat recovery mechanism, an exhaust pipe, an exhaust fan, a servo motor, and a drying mechanism. The waste heat recovery mechanism is sleeved on the surface of the exhaust pipe, and a heating pipe is connected to the top of the waste heat recovery mechanism. The drying mechanism is connected to the front of the main body, and a first drive shaft is connected to the front of the drying mechanism. This patent, by incorporating a second drive shaft and a first drive shaft, enables more uniform heating of the rose petals. Furthermore, the device, with its heat-absorbing fins and heating pipe, facilitates heat recovery, thereby enhancing the drying effect of the rose petals within the device.

[0004] However, current drying equipment has the following problems: during the process of feeding the raw materials of jasmine tea into the drying equipment, it is not easy to ensure that the raw materials of jasmine tea are spread thinly on the tray. If the raw materials of jasmine tea are piled up too thickly, some areas will absorb too much heat and cause the moisture to evaporate quickly, while other areas will not be dried completely due to insufficient heat. This uneven drying will affect the color, aroma and taste of jasmine tea and affect the quality of the final product. Therefore, we have proposed a dynamic vacuum low temperature microwave drying equipment and process for jasmine tea. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a dynamic vacuum low-temperature microwave drying device and process for jasmine tea, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a dynamic vacuum low-temperature microwave drying device for jasmine tea, comprising a main body of the vacuum microwave drying device, wherein a rotary assembly is provided inside the main body of the vacuum microwave drying device, the rotary assembly including a turntable rotatably installed on the inner wall of the main body of the vacuum microwave drying device, and the turntable being driven by a motor, wherein a plurality of support columns are uniformly fixed on the outer circumference of the turntable, and a hanging basket frame is rotatably installed on the outside of the support columns, wherein a material tray assembly is provided inside the hanging basket frame, the material tray assembly including a sliding plate slidably installed inside the hanging basket frame, and a thin spreading device is provided on the side of the hanging basket frame away from the turntable, the thin spreading device including a U-shaped frame fixed on the outer wall of the support columns, a rotating rod rotatably installed on the inner wall of the U-shaped frame, two friction wheels respectively fixed on both sides of the rotating rod, friction strips fixed on both sides of the top of the sliding plate, a plurality of actuating rods fixed on one side of the outer wall of the rotating rod, a limiting plate rotatably installed on the inner wall of the hanging basket frame away from the turntable, and an inclined rod fixed on one side of the outer wall of the limiting plate, wherein a torsion spring is provided between the limiting plate and the inner wall of the hanging basket frame.

[0007] According to the above technical solution, a collection frame is slidably installed on one side of the top of the slide plate, a number of fixed mesh plates are fixed on the other side of the top of the slide plate, and a number of U-shaped mesh plates are slidably installed on the other side of the top of the slide plate, with the U-shaped mesh plates located between two adjacent fixed mesh plates, and a spring is provided between the bottom of the U-shaped mesh plate and the slide plate.

[0008] According to the above technical solution, the outer wall of the friction wheel and the top of the friction strip are both rough surfaces, and the outer wall of the friction wheel and the top of the friction strip are in contact.

[0009] According to the above technical solution, there is a five-centimeter gap between the bottom of the limiting plate and the top of the slide plate, and the end of the inclined rod away from the limiting plate is located on the movement trajectory of the toggle rod.

[0010] According to the above technical solution, a number of actuating blades are uniformly fixed around the outer wall of the rotating rod.

[0011] According to the above technical solution, an S-groove device is provided at the U-shaped frame. The S-groove device includes an annular inclined groove cylinder fixed on the outer wall of the rotating rod away from the actuating rod, and a square rod fixed on the inner wall of the U-shaped frame. A spiral frame is slidably installed on the outside of the square rod. Several elastic telescopic columns are evenly and equidistantly fixed on the bottom of the spiral frame away from the square rod. A sliding sleeve rod is fixed on the bottom of the spiral frame near the square rod. The sliding sleeve rod is sleeved on the outside of the annular inclined groove cylinder, and the sliding sleeve rod and the annular inclined groove cylinder are in clearance fit. An annular inclined groove is opened on the outer wall of the annular inclined groove cylinder. A slider for slidingly installed inside the annular inclined groove of the annular inclined groove cylinder is fixed inside the sliding sleeve rod.

[0012] According to the above technical solution, an undulating device is provided on the side of the hanging basket frame near the turntable. The undulating device includes a forked circular block plate fixed to the top of the inner wall of the main body of the vacuum microwave drying equipment, a U-shaped connecting rod that runs vertically through and slides on the outer wall of the hanging basket frame, an L-shaped forked block plate fixed to the bottom of the U-shaped connecting rod, a spring provided between the L-shaped forked block plate and the bottom of the hanging basket frame, the top of the vertical block of the L-shaped forked block plate contacting the bottom of the U-shaped mesh plate, and an abutting circular plate fixed to the upper outer wall of the U-shaped connecting rod.

[0013] According to the above technical solution, a circular block is fixed at the bottom outer wall of the fork-tooth circular block plate, and the lower semicircular surface of the contacting circular plate is located on the movement trajectory of the upper semicircular surface of the circular block of the fork-tooth circular block plate.

[0014] According to the above technical solution, several striking rods are evenly and equidistantly fixed on both sides of the bottom of the U-shaped mesh plate, and several L-shaped plates are evenly and equidistantly fixed on the bottom of the fixed mesh plate, with the bottom of the striking rods contacting the top of the horizontal support plate of the L-shaped plate.

[0015] A drying process for a dynamic vacuum low-temperature microwave drying device for jasmine tea includes the following steps: S1. Open the door of the main body of the vacuum microwave drying equipment. The staff will take the material tray assembly off the hanging basket and spread the flower tea raw materials to be dried on the fixed mesh plate and U-shaped mesh plate. S2. Next, the staff reinserts the tray assembly containing the flower tea raw materials into the hanging basket frame and closes the door of the main body of the vacuum microwave drying equipment. S3. Start the motor corresponding to the turntable. The turntable drives the support column to rotate the basket frame. The basket frame drives the tray assembly containing the flower tea raw materials to rotate in the main body of the vacuum microwave drying equipment. S4. Start the door of the vacuum microwave drying equipment to dry the flower tea raw materials.

[0016] This invention provides a dynamic vacuum low-temperature microwave drying device and process for jasmine tea. It has the following beneficial effects: (1) The present invention, through the setting of the thin spreading device, ensures that the five-centimeter gap between the limiting plate and the sliding plate limits the thickness of the flower tea raw material spread on the fixed mesh plate and the U-shaped mesh plate, thereby ensuring that the thin spreading thickness of the flower tea raw material entering the main body of the vacuum microwave drying equipment is less than or equal to five centimeters. The thickness of the flower tea raw material thin spreading thickness is less than or equal to five centimeters, which is the safe threshold for microwave penetration depth. At this thickness, microwaves can penetrate the flower tea raw material evenly, and the moisture in the inner and outer layers evaporates simultaneously, which completely solves the problem of insufficient heat in some areas of the flower tea raw material and ensures that the color, aroma and taste of the flower tea are uniform. At the same time, the sliding plate, friction strip, friction wheel, rotating rod and toggle are also included. The levers and diagonal rods work together to cause the limiting plate to swing intermittently. This prevents the limiting plate from rigidly blocking the flower tea raw materials, instead allowing it to "lift and fall" and move. When the limiting plate encounters an excessively thick layer of flower tea raw materials, it can actively lift to allow the excessively thick layer to pass through, thus avoiding the problem of flower tea raw materials clogging at the limiting plate. At the same time, the friction wheel and rotating rod work together to drive the agitator blades to move and lift the flower tea raw materials on the fixed mesh plate and U-shaped mesh plate, which can effectively break up the initially clumps of flower tea raw materials. The flower tea raw materials become loose, which increases the contact area between the flower tea raw materials and the heat medium and improves the drying efficiency.

[0017] (2) The present invention, through the setting of the S-groove device, enables the friction wheel, rotating rod, annular inclined groove cylinder, sliding sleeve rod, return frame, and square rod to work together to drive the elastic telescopic column to separate the flower tea raw materials on the fixed mesh plate and U-shaped mesh plate into S-shaped grooves. The S-shaped grooves are equivalent to opening "ventilation and heat dissipation holes" in the flower tea raw materials, which greatly increases the exposed area of ​​the flower tea raw materials. Microwaves can penetrate directly to the bottom of the flower tea raw materials along the S-shaped grooves, avoiding the problem of uneven drying of the flower tea raw materials due to insufficient heat. At the same time, the elastic telescopic column applies flexible shearing and combing force to the flower tea raw materials in reciprocating movement, which can break up potential flower tea raw material clumps in advance, ensuring that each petal can be heated independently during drying, rather than being heated as a block.

[0018] (3) The present invention, through the setting of the undulating device, enables the turntable, support column, hanging basket frame, U-shaped connecting rod, L-shaped fork-tooth block plate, contacting circular plate, and fork-tooth circular plate to work together to drive the L-shaped fork-tooth block plate to move intermittently upward. During each upward movement of the L-shaped fork-tooth block plate, the L-shaped fork-tooth block plate will push the U-shaped mesh plate upward, thereby causing the U-shaped mesh plate to drive the flower tea raw material on it to be intermittently misaligned with the flower tea raw material on the fixed mesh plate, thereby causing the upper and lower layers of flower tea raw material to undergo relative displacement and shearing, forcibly breaking the original The stacked structure maintains the high porosity of the flower tea raw material layer, preserving physical channels for microwave penetration and water vapor escape. At the same time, the U-shaped mesh plate, the striking rod, and the L-shaped plate work together to cause the fixed mesh plate and the U-shaped mesh plate to vibrate. The instantaneous impact force generated by the vibration of the fixed mesh plate and the U-shaped mesh plate can break the physical adhesion between the flower tea raw material and the fixed mesh plate and the U-shaped mesh plate, causing the adhesion layer of the fixed mesh plate and the U-shaped mesh plate to loosen and fall off, thus making it easier for the staff to remove the dried flower tea raw material from the fixed mesh plate and the U-shaped mesh plate. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the entire invention; Figure 2 This is a schematic diagram of a cross-section of the present invention; Figure 3 This is a schematic diagram of a partial structure of the present invention. Figure 1 ; Figure 4 This is a schematic diagram of a partial structure of the present invention. Figure 2 ; Figure 5 This is a schematic diagram of the thin-spreading device of the present invention. Figure 1 ; Figure 6 This is a schematic diagram of the thin-spreading device of the present invention. Figure 2 ; Figure 7 This is a schematic diagram of the S-groove device of the present invention; Figure 8 This is a schematic diagram of the undulation device of the present invention. Figure 1 ; Figure 9 This is a schematic diagram of the undulation device of the present invention. Figure 2 ; Figure 10 This is a schematic diagram of the undulation device of the present invention. Figure 3 ; Figure 11 This is a schematic diagram of the motion trajectory of the contacting circular plate in this invention.

[0020] In the diagram: 1. Main body of the vacuum microwave drying equipment; 2. Rotary assembly; 21. Turntable; 22. Support column; 23. Hanging basket frame; 3. Material tray assembly; 31. Sliding plate; 32. Collection frame; 33. Fixed mesh plate; 34. U-shaped mesh plate; 4. Thin spreading device; 41. U-shaped frame; 42. Rotating rod; 43. Friction wheel; 44. Friction strip; 45. Limiting plate; 46. Actuating blade; 47. Inclined rod; 48. Actuating rod; 5. S-groove device; 51. Annular inclined groove cylinder; 52. Sliding sleeve rod; 53. Rectangular frame; 54. Square rod; 55. Elastic telescopic column; 6. Elevation device; 61. L-shaped fork tooth block plate; 62. U-shaped connecting rod; 63. Contact round plate; 64. Fork tooth round block plate; 65. Striking rod; 66. L-shaped plate. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] Please see Figure 1 - Figure 11 One embodiment of the present invention is: a dynamic vacuum low-temperature microwave drying device for jasmine tea, comprising a vacuum microwave drying device body 1, a rotary assembly 2 disposed inside the vacuum microwave drying device body 1, the rotary assembly 2 including a turntable 21 rotatably installed on the inner wall of the vacuum microwave drying device body 1, and the turntable 21 being driven by a motor, a plurality of support columns 22 being uniformly fixed on the outer circumference of the turntable 21, a hanging basket frame 23 being rotatably installed on the outside of the support columns 22, a material tray assembly 3 disposed inside the hanging basket frame 23, the material tray assembly 3 including a sliding plate 31 slidably installed laterally inside the hanging basket frame 23, a collection frame 32 being slidably installed laterally on one side of the top of the sliding plate 31, a plurality of fixed mesh plates 33 being fixed on the other side of the top of the sliding plate 31, and a plurality of U-shaped mesh plates 34 being slidably installed vertically on the other side of the top of the sliding plate 31, with the U-shaped mesh plates 34 located between two adjacent fixed mesh plates 33, and a spring being provided between the bottom of the U-shaped mesh plates 34 and the sliding plate 31.

[0023] A thinning device 4 is provided on the side of the suspended basket frame 23 away from the turntable 21. The thinning device 4 includes a U-shaped frame 41 fixed to the outer wall of the support column 22, a rotating rod 42 rotatably installed on the inner wall of the U-shaped frame 41, two friction wheels 43 respectively fixed on both sides of the rotating rod 42, friction strips 44 fixed on both sides of the top of the slide plate 31, several actuating rods 48 fixed on one side of the outer wall of the rotating rod 42, a limiting plate 45 rotatably installed on the inner wall of the suspended basket frame 23 away from the turntable 21, and an inclined rod 47 fixed on one side of the outer wall of the limiting plate 45. A torsion spring is provided between the limiting plate 45 and the inner wall of the suspended basket frame 23. The outer walls of the friction wheels 43 and the tops of the friction strips 44 are both... The friction wheel 43 is designed to be rough, with its outer wall in contact with the top of the friction strip 44. A five-centimeter gap is left between the bottom of the limiting plate 45 and the top of the slide plate 31. The end of the inclined rod 47 away from the limiting plate 45 is located on the movement trajectory of the actuating rod 48. Through the above structure, the limiting plate 45 swings intermittently, so that the limiting plate 45 does not block the flower tea raw material, but rather moves in a "lift-fall" motion. This allows the limiting plate 45 to actively lift and make way when it encounters an excessively thick layer of flower tea raw material, allowing the locally excessively thick layer of flower tea raw material to pass through, thus avoiding the problem of flower tea raw material blocking the limiting plate 45.

[0024] Several agitator blades 46 are evenly fixed around the outer wall of the rotating rod 42. Through the above structure, the agitator blades 46 can agitate and lift the flower tea raw materials on the fixed mesh plate 33 and the U-shaped mesh plate 34, thereby effectively breaking up the initially clumped flower tea raw materials and making them loose.

[0025] An S-groove device 5 is provided at the U-shaped frame 41. The S-groove device 5 includes an annular inclined groove cylinder 51 fixed to the outer wall of the rotating rod 42 away from the actuating rod 48, and a square rod 54 fixed to the inner wall of the U-shaped frame 41. A spiral frame 53 is laterally slidably installed on the outside of the square rod 54. Several elastic telescopic columns 55 are evenly and equidistantly fixed on the bottom side of the spiral frame 53 away from the square rod 54. A sliding sleeve rod 52 is fixed on the bottom side of the spiral frame 53 near the square rod 54. The sliding sleeve rod 52 is sleeved on the outside of the annular inclined groove cylinder 51, and the sliding sleeve rod 52 is connected to the annular inclined groove cylinder 51. The grooved cylinder 51 is fitted with a clearance, and the outer wall of the annular inclined groove cylinder 51 is provided with an annular inclined groove. The sliding sleeve rod 52 is fixed with a slider for sliding inside the annular inclined groove of the annular inclined groove cylinder 51. Through the above structure, the elastic telescopic column 55 separates the flower tea raw materials on the fixed mesh plate 33 and the U-shaped mesh plate 34 into S-shaped grooves. The S-shaped grooves are equivalent to opening "ventilation and heat dissipation holes" in the flower tea raw materials, which greatly increases the exposed area of ​​the flower tea raw materials. Microwaves can penetrate directly to the bottom of the flower tea raw materials along the S-shaped grooves.

[0026] In use, open the door of the main body 1 of the vacuum microwave drying equipment. The operator removes the tray assembly 3 from the hanging basket frame 23 and spreads the tea leaves to be dried on the fixed mesh plate 33 and the U-shaped mesh plate 34. Then, the operator reinserts the tray assembly 3 containing the tea leaves into the hanging basket frame 23 and closes the door of the main body 1. Starting the door of the main body 1 allows for the drying of the tea leaves. Simultaneously, the motor corresponding to the turntable 21 is started. The turntable 21 drives the support column 22, causing the hanging basket frame 23 to rotate. Since the hanging basket frame 23 is rotatably connected to the support column 22, the hanging basket frame 23 rotates. Under the influence of gravity, the hanging basket 23 is in a downward position, which drives the tray assembly 3 containing the jasmine tea raw materials to rotate within the main body 1 of the vacuum microwave drying equipment. Under vacuum conditions, the vaporization temperature of water in the jasmine tea raw materials is low, achieving low-temperature drying. This preserves the original color, aroma, flavor, and nutritional components of the processed materials, achieving a good aroma-fixing effect. At the same time, it avoids the loss of beneficial components such as vitamins, amino acids, and tea polyphenols in the tea. Microwaves penetrate into the interior of the material, and the rotating assembly 2 drives the jasmine tea raw materials to rotate, making the jasmine tea raw materials heat more evenly and dry more quickly, greatly improving the work efficiency and product quality of jasmine tea drying.

[0027] During the process of the staff re-inserting the tray assembly 3 containing the flower tea raw materials into the hanging basket frame 23, the five-centimeter gap between the limiting plate 45 and the sliding plate 31 limits the thickness of the flower tea raw materials spread on the fixed mesh plate 33 and the U-shaped mesh plate 34, thereby ensuring that the thickness of the flower tea raw materials spread into the main body 1 of the vacuum microwave drying equipment is less than or equal to five centimeters. The thickness of the flower tea raw materials spread less than or equal to five centimeters is the safe threshold for microwave penetration depth. At this thickness, microwaves can penetrate the flower tea raw materials evenly, and the moisture in the inner and outer layers evaporates simultaneously, which completely solves the problem of insufficient heat in some areas of the flower tea raw materials and ensures that the color, aroma and taste of the flower tea are uniform.

[0028] The sliding plate 31 drives the friction strip 44 to move. Under the friction between the friction strip 44 and the friction wheel 43, the friction strip 44 drives the friction wheel 43 to rotate. The friction wheel 43 drives the rotating rod 42 and the actuating rod 48 to rotate. When the actuating rod 48 rotates to the position of the inclined rod 47, the actuating rod 48 pushes the inclined rod 47 to make the limiting plate 45 swing. When the actuating rod 48 passes the inclined rod 47, the limiting plate 45 swings back under the action of the corresponding torsion spring. This process repeats, so that the limiting plate 45 swings intermittently. This means that the limiting plate 45 does not block the flower tea raw material, but rather moves in a "lift-fall" motion. This allows the limiting plate 45 to actively lift and make way when it encounters an excessively thick layer of flower tea raw material, allowing the locally excessively thick layer of flower tea raw material to pass through, thus avoiding the problem of flower tea raw material blocking the limiting plate 45.

[0029] During the rotation of the friction wheel 43 and the rotating rod 42, the agitator 46 will also rotate. The agitator 46 will agitate and lift the flower tea raw materials on the fixed mesh plate 33 and the U-shaped mesh plate 34, thereby effectively breaking up the initially clumped flower tea raw materials. The flower tea raw materials become loose, which increases the contact area between the flower tea raw materials and the heat medium and improves the drying efficiency.

[0030] During the rotation of the friction wheel 43 and the rotating rod 42, the annular inclined groove cylinder 51 will also rotate. Under the constraint of the annular inclined groove of the annular inclined groove cylinder 51, the slider of the sliding sleeve rod 52 will drive the sliding sleeve rod 52 to move the return frame 53 back and forth along the outside of the square rod 54. The return frame 53 will drive the elastic telescopic column 55 to move back and forth, so that the elastic telescopic column 55 will separate the flower tea raw materials on the fixed mesh plate 33 and the U-shaped mesh plate 34 into S-shaped grooves. The S-shaped grooves are equivalent to opening "ventilation and heat dissipation holes" in the flower tea raw materials, which greatly increases the exposed area of ​​the flower tea raw materials. Microwaves can penetrate directly to the bottom of the flower tea raw materials along the S-shaped grooves, avoiding the problem of uneven drying of the flower tea raw materials due to insufficient heat. At the same time, the elastic telescopic column 55 applies a flexible shearing and combing force to the flower tea raw materials during the back and forth movement, which can break up the potential clumps of flower tea raw materials in advance, ensuring that each petal can be heated independently during drying, rather than being heated as a block.

[0031] Please see Figures 1-11 Based on the above embodiments, in another embodiment of the present invention, an undulating device 6 is provided on the side of the hanging basket frame 23 near the turntable 21. The undulating device 6 includes a forked tooth circular block plate 64 fixed to the top of the inner wall of the vacuum microwave drying equipment body 1, and a U-shaped connecting rod 62 that is vertically penetrating and slidably installed on the outer wall of the hanging basket frame 23. An L-shaped forked tooth block plate 61 is fixed to the bottom of the U-shaped connecting rod 62. A spring is provided between the L-shaped forked tooth block plate 61 and the bottom of the hanging basket frame 23. The top of the vertical block of the L-shaped forked tooth block plate 61 contacts the bottom of the U-shaped mesh plate 34. A contacting circular plate 63 is fixed on the upper outer wall of plate 2, and a circular block is fixed on the bottom outer wall of the fork-tooth circular block plate 64. The lower half-circle of the contacting circular plate 63 is located on the movement trajectory of the upper half-circle of the circular block of the fork-tooth circular block plate 64. A groove for the L-shaped fork-tooth block plate 61 to move is opened on the side of the slide plate 31 near the turntable 21. Through the above structure, the U-shaped mesh plate 34 drives the flower tea raw material on it to be intermittently staggered from the flower tea raw material on the fixed mesh plate 33, thereby causing the upper and lower layers of flower tea raw material to undergo relative displacement and shearing, forcibly breaking the original stacking structure.

[0032] Several striking rods 65 are evenly and equidistantly fixed on both sides of the bottom of the U-shaped mesh plate 34, and several T-shaped plates 66 are evenly and equidistantly fixed on the bottom of the fixed mesh plate 33. The bottom of the striking rods 65 contacts the top of the horizontal support plate of the T-shaped plate 66. Through the above structure, the instantaneous impact force generated by the vibration of the fixed mesh plate 33 and the U-shaped mesh plate 34 can destroy the physical adsorption force between the flower tea raw material and the fixed mesh plate 33 and the U-shaped mesh plate 34, causing the adhesive layer of the fixed mesh plate 33 and the U-shaped mesh plate 34 to loosen and fall off.

[0033] In use, as the turntable 21 drives the support column 22 to rotate the basket frame 23, the basket frame 23 will drive the U-shaped connecting rod 62 and the L-shaped fork block plate 61 to rotate as well. When the U-shaped connecting rod 62 drives the contact plate 63 to rotate to the position of the circular block of the fork block plate 64, the upper half-circle of the circular block of the fork block plate 64 will push the lower half-circle of the contact plate 63 to drive the U-shaped connecting rod 62 to move upward. The U-shaped connecting rod 62 will drive the L-shaped fork block plate 61 to move upward as well, and the spring corresponding to the L-shaped fork block plate 61 will be compressed. When the upper half-circle of the circular block of the fork block plate 64 no longer pushes the lower half-circle of the contact plate 63, the L-shaped fork block plate 61... Under the corresponding spring force, the L-shaped fork plate 61 drives the U-shaped connecting rod 62 and the contacting circular plate 63 to reset and move. This process repeats, causing the L-shaped fork plate 61 to move upward intermittently. During each upward movement of the L-shaped fork plate 61, the L-shaped fork plate 61 pushes the U-shaped mesh plate 34 upward, causing the U-shaped mesh plate 34 to intermittently separate the flower tea raw materials on it from the flower tea raw materials on the fixed mesh plate 33. This results in relative displacement and shearing of the upper and lower layers of flower tea raw materials, forcibly breaking the original stacking structure, maintaining the high porosity of the flower tea raw material layer, and preserving physical channels for microwave penetration and water vapor escape.

[0034] It should be noted that when the L-shaped fork plate 61 pushes the U-shaped mesh plate 34 upward, the spring corresponding to the U-shaped mesh plate 34 will be stretched. When the L-shaped fork plate 61 is reset by the corresponding spring, the L-shaped fork plate 61 will no longer push the U-shaped mesh plate 34, and the U-shaped mesh plate 34 will be reset under the action of the corresponding spring force.

[0035] During the later stages of drying, the sugars and pectin inside the flower tea precipitate out, making the flower tea petals easily stick to the fixed mesh plate 33 and the U-shaped mesh plate 34. Therefore, each time the U-shaped mesh plate 34 moves upward, it causes the striking rod 65 to move away from the horizontal support plate of the T-shaped plate 66. When the U-shaped mesh plate 34 is reset by the corresponding spring, it causes the striking rod 65 to impact the horizontal support plate of the T-shaped plate 66, causing the T-shaped plate 66 to vibrate and thus causing the fixed mesh plate 33 to vibrate. Furthermore, under the interaction force between the L-shaped plate 66 and the striking rod 65, the striking rod 65 will also cause the U-shaped mesh plate 34 to vibrate. The instantaneous impact force generated by the vibration of the fixed mesh plate 33 and the U-shaped mesh plate 34 can destroy the physical adsorption force between the flower tea raw material and the fixed mesh plate 33 and the U-shaped mesh plate 34, causing the adhesive layer of the fixed mesh plate 33 and the U-shaped mesh plate 34 to loosen and fall off, thus making it easier for subsequent workers to remove the dried flower tea raw material from the fixed mesh plate 33 and the U-shaped mesh plate 34.

[0036] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A dynamic vacuum low-temperature microwave drying device for jasmine tea, comprising a main body of a vacuum microwave drying device (1), characterized in that: The vacuum microwave drying equipment body (1) is equipped with a rotary assembly (2) inside. The rotary assembly (2) includes a turntable (21) rotatably installed on the inner wall of the vacuum microwave drying equipment body (1). The turntable (21) is driven by a motor. Several support columns (22) are evenly fixed on the outer circumference of the turntable (21). A hanging basket frame (23) is rotatably installed on the outside of the support columns (22). A material tray assembly (3) is provided inside the hanging basket frame (23). The material tray assembly (3) includes a sliding plate (31) slidably installed inside the hanging basket frame (23). A side of the hanging basket frame (23) away from the turntable (21) is provided with a... Thin spreading device (4), the thin spreading device (4) includes a U-shaped frame (41) fixed on the outer wall of the support column (22), a rotating rod (42) rotatably installed on the inner wall of the U-shaped frame (41), two friction wheels (43) respectively fixed on both sides of the rotating rod (42), friction strips (44) fixed on both sides of the top of the slide plate (31), several actuating rods (48) fixed on one side of the outer wall of the rotating rod (42), a limiting plate (45) rotatably installed on the inner wall of the hanging basket frame (23) away from the turntable (21), and an inclined rod (47) fixed on one side of the outer wall of the limiting plate (45). A torsion spring is provided between the limiting plate (45) and the inner wall of the hanging basket frame (23).

2. The dynamic vacuum low-temperature microwave drying equipment for jasmine tea according to claim 1, characterized in that: A collection frame (32) is horizontally slidably installed on one side of the top of the slide plate (31). Several fixed mesh plates (33) are fixed on the other side of the top of the slide plate (31). Several U-shaped mesh plates (34) are vertically slidably installed on the other side of the top of the slide plate (31). The U-shaped mesh plates (34) are located between two adjacent fixed mesh plates (33). A spring is provided between the bottom of the U-shaped mesh plate (34) and the slide plate (31).

3. The dynamic vacuum low-temperature microwave drying equipment for jasmine tea according to claim 1, characterized in that: The outer wall of the friction wheel (43) and the top of the friction strip (44) are both rough surfaces, and the outer wall of the friction wheel (43) and the top of the friction strip (44) are in contact.

4. The dynamic vacuum low-temperature microwave drying equipment for jasmine tea according to claim 1, characterized in that: There is a five-centimeter gap between the bottom of the limiting plate (45) and the top of the slide (31), and the end of the inclined rod (47) away from the limiting plate (45) is located on the movement trajectory of the toggle rod (48).

5. The dynamic vacuum low-temperature microwave drying equipment for jasmine tea according to claim 1, characterized in that: Several actuating blades (46) are evenly fixed around the outer wall of the rotating rod (42).

6. The dynamic vacuum low-temperature microwave drying equipment for jasmine tea according to claim 1, characterized in that: An S-groove device (5) is provided at the U-shaped frame (41). The S-groove device (5) includes an annular inclined groove cylinder (51) fixed on the outer wall of the rotating rod (42) away from the actuating rod (48) and a square rod (54) fixed on the inner wall of the U-shaped frame (41). A spiral frame (53) is slidably installed on the outside of the square rod (54). Several elastic telescopic columns (55) are evenly and equidistantly fixed on the bottom of the spiral frame (53) away from the square rod (54). A sliding sleeve rod (52) is fixed on the bottom of the spiral frame (53) near the square rod (54). The sliding sleeve rod (52) is sleeved on the outside of the annular inclined groove cylinder (51) and the sliding sleeve rod (52) is clearance-fitted with the annular inclined groove cylinder (51). An annular inclined groove is opened on the outer wall of the annular inclined groove cylinder (51). A slider for sliding installation in the annular inclined groove of the annular inclined groove cylinder (51) is fixed inside the sliding sleeve rod (52).

7. The dynamic vacuum low-temperature microwave drying equipment for jasmine tea according to claim 2, characterized in that: The suspended basket frame (23) is provided with an undulating device (6) on the side near the turntable (21). The undulating device (6) includes a forked round plate (64) fixed to the top of the inner wall of the vacuum microwave drying equipment body (1) and a U-shaped connecting rod (62) that runs vertically through and slides on the outer wall of the suspended basket frame (23). An L-shaped forked plate (61) is fixed to the bottom of the U-shaped connecting rod (62). A spring is provided between the L-shaped forked plate (61) and the bottom of the suspended basket frame (23). The top of the vertical block of the L-shaped forked plate (61) is in contact with the bottom of the U-shaped mesh plate (34). An abutting round plate (63) is fixed to the upper outer wall of the U-shaped connecting rod (62).

8. The dynamic vacuum low-temperature microwave drying equipment for jasmine tea according to claim 7, characterized in that: A circular block is fixed to the bottom outer wall of the fork-tooth circular block plate (64), and the lower semicircular surface of the abutting circular plate (63) is located on the movement trajectory of the upper semicircular surface of the circular block of the fork-tooth circular block plate (64).

9. The dynamic vacuum low-temperature microwave drying equipment for jasmine tea according to claim 7, characterized in that: Several striking rods (65) are evenly and equidistantly fixed on both sides of the bottom of the U-shaped mesh plate (34), and several T-shaped plates (66) are evenly and equidistantly fixed on the bottom of the fixed mesh plate (33). The bottom of the striking rods (65) is in contact with the top of the horizontal support plate of the T-shaped plate (66).

10. A drying process for a dynamic vacuum low-temperature microwave drying device for jasmine tea, comprising the dynamic vacuum low-temperature microwave drying device for jasmine tea as described in any one of claims 1-9, characterized in that, Includes the following steps: S1. Open the door of the main body (1) of the vacuum microwave drying equipment. The staff will take the tray assembly (3) off the hanging basket (23) and spread the flower tea raw materials to be dried on the fixed mesh plate (33) and the U-shaped mesh plate (34). S2. Next, the staff reinserts the tray assembly (3) containing the flower tea raw materials into the hanging basket frame (23) and closes the door of the main body (1) of the vacuum microwave drying equipment. S3. Start the motor corresponding to the turntable (21). The turntable (21) drives the support column (22) to rotate the basket frame (23). The basket frame (23) drives the tray assembly (3) containing flower tea raw materials to rotate in the main body (1) of the vacuum microwave drying equipment. S4. Start the door of the main body (1) of the vacuum microwave drying equipment to dry the flower tea raw materials.

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