An efficient stevioside purification device and extraction process

Abstract

The present invention relates to the technical field of stevioside, and in particular to an efficient stevioside purification device and extraction process. Aiming at the problem that the liquid contained in dried stevia leaves cannot be controlled and dried during material taking, an efficient stevioside purification device is provided, which includes a bottom plate. A purification barrel that can move left and right is provided at the upper end of the bottom plate. A filter barrel is provided at the upper end of the purification barrel. A stirring device is provided on the right side of the upper end of the bottom plate. When the purification barrel moves to the right, a structure can be formed in which the filter barrel moves downward and the stirring device moves downward into the inner wall of the filter cylinder; A drying control device is provided on the left side of the upper end of the bottom plate. The drying control device includes a pressure filter plate that cooperates with the filter barrel. When the purification barrel moves to the left, a structure can be formed in which the pressure filter plate moves downward into the inner wall of the filter cylinder; During material taking, the liquid of dried stevia leaves can be controlled and dried, preventing the liquid from spilling and leaking, and improving work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of stevioside, and in particular to an efficient stevioside purification device and extraction process. Background Art

[0002] Stevioside is an extract of stevia leaves, which contains no sugar and calories and is known as the "third sugar source in the world". The main producing country is China. Stevioside is white to slightly yellow in color, has a suitable taste, no peculiar smell, and a natural low calorific value. It is very close to the taste of sucrose. It is the third natural sweetener with development value and health promotion after cane sugar and beet sugar, and is also a new sugar source with broad development prospects.

[0003] The extraction of stevioside is carried out by soaking dry stevia leaves in water, filtering to separate the liquid from the leaves and stems, and further purifying with water or food-grade alcohol, etc. At present, there are still certain defects in the use of stevioside purification equipment. For example, in the prior art, the publication number is: CN217613045U, and the name is: An efficient stevioside purification device. Although it solves the problem of facilitating the removal of dry stevia leaves, when the dry stevia leaves are taken out, they usually contain a large amount of liquid inside and still need to be subjected to a static drying treatment; for this reason, an efficient stevioside purification device is designed to solve the problems mentioned above. Summary of the Invention

[0004] The present invention aims at the problem that the liquid contained in dry stevia leaves cannot be dried during material taking, and provides an efficient stevioside purification device, which can dry the liquid of dry stevia leaves during material taking, prevent the liquid from spilling and leaking, improve work efficiency, and effectively solve the problems mentioned in the above background art.

[0005] The technical solution adopted by the present invention to solve the above problems is as follows:

[0006] An efficient stevioside purification device includes a bottom plate. A purification barrel that can move left and right is provided at the upper end of the bottom plate. A filter barrel is provided at the upper end of the purification barrel. A stirring device is provided on the right side of the upper end of the bottom plate. When the purification barrel moves to the right, a structure can be formed in which the filter barrel moves downward and the stirring device moves downward into the inner wall of the filter barrel; a drying device is provided on the left side of the upper end of the bottom plate. The drying device includes a pressure filter plate that cooperates with the filter barrel. When the purification barrel moves to the left, a structure can be formed in which the pressure filter plate moves downward into the inner wall of the filter barrel.

[0007] A first motor is fixedly connected to the left side of the upper surface of the bottom plate. The output end of the first motor is fixedly connected to a long threaded rod. A threaded seat that is slidably connected to the bottom plate is threadedly connected to the outer surface of the long threaded rod. A cross-shaped support plate is fixedly connected to the upper surface of the threaded seat. The purification barrel is fixedly connected to the upper end of the cross-shaped support plate.

[0008] On the front and rear ends of the outer surface of the purification barrel, side plates are fixedly connected respectively. On the inner walls of the side plates, first sliders are slidably connected respectively. On the inner walls of the first sliders, long pins are fixedly connected respectively. The filter barrel is fixedly connected to the outer surfaces of the two long pins.

[0009] On the front and rear sides of the middle part of the upper surface of the bottom plate, guide frames are fixedly connected respectively. On the guide frames, guide grooves matching with the long pins are respectively opened.

[0010] On the right end surface of the cross-shaped support plate, a first push plate is fixedly connected. On the right side of the upper surface of the bottom plate, a first U-shaped seat is slidably connected. On the upper end of the first U-shaped seat, a first extension frame is provided. On the inner wall of the upper end of the first extension frame, a first vertical frame is slidably connected. The stirring device is installed on the first vertical frame. On the inner wall of the lower end of the first vertical frame, a first sliding pin is fixedly connected. On the front and rear ends of the right side of the upper surface of the bottom plate, first track frames are fixedly connected respectively. On the first track frames, first inclined grooves matching with the first sliding pin are respectively opened; on the front and rear sides of the right end surface of the first U-shaped seat, first springs are fixedly connected respectively. The other ends of the first springs are fixedly connected to first stop seats fixedly connected to the bottom plate.

[0011] On the upper end surface of the first vertical frame, a fixed seat is fixedly connected. On the inner wall of the front end of the fixed seat, a cover plate is fixedly connected. On the upper end surface of the fixed seat, an extension plate is fixedly connected. The stirring device includes a rotatable transmission shaft. On both sides of the lower end of the cover plate, stirring rods are respectively provided. When the transmission shaft rotates, a structure can be formed in which the two stirring rods move circumferentially, reciprocate forward and reverse, and move inward or outward.

[0012] At the center of the lower end surface of the cover plate, an incomplete spur gear is fixedly connected. At the outer periphery of the incomplete spur gear, an incomplete internal gear ring fixedly connected to the cover plate is provided. At the lower end surface of the incomplete internal gear, a driving plate rotatably connected to the transmission shaft is slidably connected. On both sides of the upper end of the driving plate, planetary spur gears matching with the incomplete spur gear and the incomplete internal gear ring are rotatably connected respectively. The stirring rods are respectively installed at the lower ends of the corresponding planetary spur gears.

[0013] On the extension plate, a second motor is fixedly connected. At the output end of the second motor, a driving shaft is fixedly connected. At the lower end of the outer surface of the driving shaft, a short cam is slidably connected. On the upper end surface of the cover plate, a limit pin matching with the short cam is fixedly connected. The transmission shaft is fixedly connected to the lower end surface of the short cam; on both sides of the lower end surface of the driving plate, U-shaped support seats are fixedly connected respectively. On the inner walls of the U-shaped support seats, second sliders are slidably connected respectively. At the lower ends of the planetary spur gears, coupling shafts are coaxially fixedly connected respectively. At the output ends of the coupling shafts, stirring shafts rotatably connected to the second sliders are fixedly connected respectively. The stirring rods are respectively fixedly connected to the outer surfaces of the corresponding stirring shafts. On the upper ends of the outer surfaces of the stirring shafts, ring sleeves are rotatably connected respectively. On both sides of the lower end of the transmission shaft, connecting rods are hinged respectively. The other ends of the connecting rods are hinged to the corresponding ring sleeves respectively.

[0014] An extraction method of a high-efficiency stevioside purification device includes the following steps;

[0015] S1. By loading stevia leaves into the filter barrel, filling the purification barrel with an ethanol solution, and driving the purification barrel to move right to a specified position, the filter barrel can be moved downward to contact the ethanol solution, and the stirring device will also move downward into the inner wall of the filter barrel. When the stirring device works, it can evenly stir the stevia leaves inside the filter barrel to fully contact with the ethanol solution;

[0016] S2. When it is necessary to take out the stevia leaves in the filter barrel, by driving the purification barrel to move left, the filter barrel can be moved left to cooperate with the draining device, that is, the corresponding pressing filter plate moves downward into the filter barrel, and the stevia leaves inside the filter barrel can be squeezed and drained.

[0017] The present invention has the following advantages compared with the prior art:

[0018] During use, the purification barrel is filled with a solution, the filter barrel is provided with a plurality of filter holes, the inner wall of the filter barrel is filled with stevia leaves. After the filter barrel moves downward into the purification barrel, the stevia leaves can contact the solution, and the sugar in the stevia leaves can precipitate into the solution; after filling the solution into the purification barrel and loading the stevia leaves into the filter barrel, by driving the purification barrel to move right, the filter barrel can be moved downward into the inner wall of the purification barrel so that the stevia leaves contact the solution. When the purification barrel continues to move right, the stirring device can be moved downward into the filter barrel. When the stirring device works, it can mix and stir the stevia leaves and liquid inside the filter barrel to accelerate the precipitation of sugar; when it is necessary to take out the stevia leaves in the filter barrel, by driving the purification barrel to move left, after moving left to a specified position, the corresponding filter barrel will move upward to the top position, that is, the filter barrel moves upward to the upper end position of the purification barrel to separate the stevia leaves from the solution. When the purification barrel continues to move left, it will cooperate with the corresponding draining device, that is, the pressing filter plate will move downward into the inner wall of the filter barrel, squeeze the stevia leaves in the filter barrel, drain the liquid in the stevia leaves, and then drive the purification barrel to move right to the initial position, and the dried stevia leaves can be taken out. When taking materials, the liquid of the dried stevia can be drained to prevent the liquid from spilling and leaking, improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is the first axonometric view of an efficient stevioside purification device of the present invention.

[0020] Figure 2 It is the second axonometric view of an efficient stevioside purification device of the present invention.

[0021] Figure 3 It is the installation schematic diagram of the cross support plate of an efficient stevioside purification device of the present invention.

[0022] Figure 4 It is the installation schematic diagram of the first U-shaped seat of an efficient stevioside purification device of the present invention.

[0023] Figure 5 Schematic diagram of the installation of the first vertical frame of an efficient stevioside purification device of the present invention.

[0024] Figure 6 Schematic diagram of the installation of the short cam of an efficient stevioside purification device of the present invention.

[0025] Figure 7 Schematic diagram of the installation of the drive plate of an efficient stevioside purification device of the present invention.

[0026] Figure 8 Schematic diagram of the installation of the second slider of an efficient stevioside purification device of the present invention.

[0027] Figure 9 Schematic diagram of the installation of the filter press plate of an efficient stevioside purification device of the present invention.

[0028] Figure 10 Schematic diagram of the installation of the second vertical frame of an efficient stevioside purification device of the present invention.

[0029] Reference numerals in the figure: 1 - bottom plate, 2 - support leg, 3 - first motor, 4 - long threaded rod, 5 - threaded seat, 6 - cross support plate, 7 - purification barrel, 8 - filter barrel, 9 - long pin, 10 - first slider, 11 - side plate, 12 - guide frame, 13 - lower horizontal groove, 14 - long inclined groove, 15 - upper horizontal groove, 16 - first push plate, 17 - second push plate, 18 - first U-shaped seat, 19 - first extension frame, 20 - first vertical frame, 21 - first sliding pin, 22 - first track frame, 23 - first inclined groove, 24 - first spring, 25 - first stop seat, 26 - fixed seat, 27 - extension plate, 28 - second motor, 29 - drive shaft, 30 - short cam, 31 - limit pin, 32 - drive shaft, 33 - cover plate, 34 - drive plate, 35 - incomplete internal gear ring, 36 - incomplete spur gear, 37 - planetary spur gear, 38 - U-shaped support seat, 39 - coupling, 40 - second slider, 41 - stirring shaft, 42 - stirring rod, 43 - connecting rod, 44 - second U-shaped seat, 45 - second spring, 46 - second stop seat, 47 - second extension frame, 48 - second sliding pin, 49 - second vertical frame, 50 - pressing arm, 51 - filter press plate, 52 - second track frame, 53 - second inclined groove, 54 - circular ring sleeve Detailed implementation manners

[0030] The following are specific embodiments of the present invention, and the technical solutions of the present invention will be further described in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments.

[0031] As Figure 1-10As shown in the figure, the present invention provides an efficient stevioside purification device, including a bottom plate 1. A purification barrel 7 that can move left and right is provided at the upper end of the bottom plate 1. A filter barrel 8 is provided at the upper end of the purification barrel 7. A stirring device is provided on the right side of the upper end of the bottom plate 1. When the purification barrel 7 moves to the right, a structure can be formed in which the filter barrel 8 moves downward and the stirring device moves downward into the inner wall of the filter cylinder; A drying control device is provided on the left side of the upper end of the bottom plate 1. The drying control device includes a pressure filter plate 51 that cooperates with the filter barrel 8. When the purification barrel 7 moves to the left, a structure can be formed in which the pressure filter plate 51 moves downward into the inner wall of the filter cylinder.

[0032] As Figure 1-5 shown, a plurality of support legs 2 are fixedly connected to the lower surface of the bottom plate 1. The support legs 2 and the bottom plate 1 are used to support the entire device; The purification barrel 7 contains a solution inside. A plurality of filter holes are provided on the filter barrel 8. The inner wall of the filter barrel 8 is equipped with stevia leaves. After the filter barrel 8 moves downward into the purification barrel 7, the stevia leaves can come into contact with the solution, and the sugar in the stevia leaves can precipitate into the solution; An electric valve is provided on the inner wall of the lower end of the purification barrel 7. When the electric valve is opened, the solution in the purification barrel 7 can be released. The electric valve is a prior art and will not be elaborated here; After filling the purification barrel 7 with the solution and loading the stevia leaves into the filter barrel 8, by driving the purification barrel 7 to move to the right, the filter barrel 8 can be moved downward into the inner wall of the purification barrel 7 so that the stevia leaves come into contact with the solution. When the purification barrel 7 continues to move to the right, the stirring device can be moved downward into the filter barrel 8. When the stirring device works, it can mix and stir the stevia leaves and the liquid inside the filter barrel 8, accelerating the precipitation of sugar; When it is necessary to take out the stevia leaves in the filter barrel 8, by driving the purification barrel 7 to move to the left, after moving to the specified position to the left, the corresponding filter barrel 8 will move upward to the top position, that is, the filter barrel 8 moves upward to the upper end position of the purification barrel 7 to separate the stevia leaves from the solution. When the purification barrel 7 continues to move to the left, it will cooperate with the corresponding drying control device, that is, the pressure filter plate 51 will move downward into the inner wall of the filter barrel 8 to squeeze the stevia leaves in the filter barrel 8, perform a drying control treatment on the liquid in the stevia leaves, and then drive the purification barrel 7 to move to the right to the initial position, and the dried stevia leaves can be taken out. During material taking, the liquid of the dried stevia can be dried to prevent the liquid from spilling and leaking, improving work efficiency.

[0033] A first motor 3 is fixedly connected to the left side of the upper surface of the bottom plate 1. The output end of the first motor 3 is fixedly connected to a long threaded rod 4. A threaded seat 5 that is slidably connected to the bottom plate 1 is threadedly connected to the outer surface of the long threaded rod 4. The upper surface of the threaded seat 5 is fixedly connected to a cross-shaped support plate 6, and the purification barrel 7 is fixedly connected to the upper end of the cross-shaped support plate 6.

[0034] As Figure 1-3As shown, the function of the first motor 3 is to provide a rotational force for the long threaded rod 4. The motor is a prior art and will not be elaborated here. One side of the outer surface of the long threaded rod 4 is rotatably connected to a bearing block, and the bottom end of the bearing block is fixedly connected to the upper surface of the bottom plate 1, restricting the long threaded rod 4 to only rotate on the upper end of the bottom plate 1. The threaded seat 5 is slidably connected to the upper surface of the bottom plate 1 in the left-right direction; the installation and shape of the cross-shaped support plate 6, the threaded seat 5, and the purification barrel 7 are as Figure 3 shown. When the threaded seat 5 moves, it can drive the cross-shaped support plate 6, the purification barrel 7, etc. to move left or right; when the first motor 3 is started, it can drive the corresponding long threaded rod 4 to rotate. Through the threaded connection with the threaded seat 5, the corresponding threaded seat 5, cross-shaped support plate 6, purification barrel 7, etc. will move left or right synchronously. And after moving to the designated position, when the first motor 3 is not started, that is, when the corresponding long threaded rod 4 does not rotate, the position of the purification barrel 7 is in a fixed state, that is, it has a self-locking function under the threaded connection between the long threaded rod 4 and the threaded seat 5.

[0035] Both front and rear ends of the outer surface of the purification barrel 7 are fixedly connected with side plates 11 respectively. The inner walls of the side plates 11 are respectively slidably connected with first sliders 10, and the inner walls of the first sliders 10 are respectively fixedly connected with long pins 9. The filter barrel 8 is fixedly connected to the outer surfaces of the two long pins 9.

[0036] As Figure 1-3 shown, the first slider 10 is slidably connected to the inner wall of the side plate 11 in the up-down direction. The side plate 11 plays a role in supporting and restricting the first slider 10, the long pin 9, and the filter barrel 8, enabling the long pin 9, the first slider 10, and the filter barrel 8 to only move up and down. And when the purification barrel 7 and the side plate 11 move left and right, they will drive the corresponding first slider 10, long pin 9, and filter barrel 8 to move left and right.

[0037] Both front and rear sides of the middle part of the upper surface of the bottom plate 1 are fixedly connected with guide frames 12 respectively, and guide grooves matching the long pins 9 are respectively formed on the guide frames 12.

[0038] As Figure 1-3 shown, through the engagement of the guide frames 12, the guide grooves and the long pins 9 provided, when the purification barrel 7 and the filter barrel 8 move to the designated position, the height of the long pin 9 and the filter barrel 8 can be controlled; the guide groove includes a lower horizontal groove 13, a long inclined groove 14, and an upper horizontal groove 15, as Figure 2As shown, when the long pin 9 moves to the right and engages with the long inclined slot 14, the long pin 9 will move downward while moving to the right. When the long pin 9 moves to the right until it enters the inner wall of the lower horizontal slot 13, at this time, the long pin 9 will no longer move downward when moving to the right, that is, the corresponding long pin 9 will move horizontally to the right. When the long pin 9 moves to the left on the inner wall of the upper horizontal slot 15, the long pin 9 will move horizontally to the right under the engagement of the upper horizontal slot 15; when the purification barrel 7 moves to the right from the starting position, that is, the middle position, under the engagement of the long pin 9 and the guide slot, the corresponding long pin 9 and the filter barrel 8 will move downward while moving to the right, that is, the filter barrel 8 will enter the inner wall of the purification barrel 7. When the purification barrel 7 and the long pin 9 move to the right until the long pin 9 enters the inner wall of the lower horizontal slot 13, that is, the corresponding filter barrel 8 will move downward until it completely enters the inner wall of the purification barrel 7. At this time, when the purification barrel 7, the long pin 9, etc. continue to move to the right, they will no longer drive the filter barrel 8 to move downward, that is, the corresponding stirring device will enter the inner wall of the filter barrel 8 to stir the stevia leaves inside the filter barrel 8; when the purification barrel 7 moves to the left, under the engagement of the long pin 9 and the guide slot, the filter barrel 8 can be moved upward to the topmost position, that is, to the upper end position of the purification barrel 7, and under the engagement of the long pin 9 and the upper horizontal slot 15, the filter barrel 8 will always maintain a specified height. When the purification barrel 7 continues to move to the left and is used in cooperation with the drying device, the corresponding filter plate 51 will enter the inner wall of the filter barrel 8 to squeeze and dry the stevia leaves inside the filter barrel 8.

[0039] A first push plate 16 is fixedly connected to the right end surface of the cross-shaped support plate 6. A first U-shaped seat 18 is slidably connected to the upper right surface of the bottom plate 1. A first extension frame 19 is provided at the upper end of the first U-shaped seat 18. A first vertical frame 20 is slidably connected to the inner wall of the upper end of the first extension frame 19. The stirring device is installed on the first vertical frame 20. A first sliding pin 21 is fixedly connected to the inner wall of the lower end of the first vertical frame 20. First track frames 22 are respectively fixedly connected to the front and rear ends of the upper right surface of the bottom plate 1. First inclined slots 23 that cooperate with the first sliding pin 21 are respectively formed on the first track frames 22; First springs 24 are respectively fixedly connected to the front and rear sides of the right end surface of the first U-shaped seat 18. The other ends of the first springs 24 are respectively fixedly connected to first retaining seats 25 fixedly connected to the bottom plate 1.

[0040] As Figure 4-5 shown, when the cross-shaped support plate 6 moves to the right until the first push plate 16 contacts the first U-shaped seat 18, it can push the first U-shaped seat 18 to move synchronously to the right; the first U-shaped seat 18 is slidably connected to the upper surface of the bottom plate 1 in the left-right direction, the first vertical frame 20 is slidably connected to the inner wall of the first extension frame 19 in the up-down direction, and the installation and shape of the first vertical frame 20, the first extension frame 19, the first U-shaped seat 18, the first track frames 22, the first springs 24, and the first retaining seats 25 are as Figure 5As shown, the first retaining seat 25 can support and fix the first spring 24. The first spring 24 always has a leftward thrust on the first U-shaped seat 18, making the first U-shaped seat 18 in the leftmost state under normal conditions, that is, the corresponding stirring device is in the highest and leftmost state under normal conditions; when the first sliding pin 21 moves to the right, through the engagement of the first inclined groove 23 and the first sliding pin 21, it will drive the corresponding first vertical frame 20 and the first sliding pin 21 to move downward while moving to the right. When the first vertical frame 20 moves to the right and downward, the stirring device will enter the inner wall of the filter barrel 8; when the cross-shaped support plate 6 and the first push plate 16 move to the right and contact the first U-shaped seat 18, at this time the filter barrel 8 will completely enter the inner wall of the purification barrel 7, that is, the filter barrel 8 moves to the lowest position and is directly below the stirring device. When the cross-shaped support plate 6 and the first push plate 16 continue to move to the right, they will push the corresponding first U-shaped seat 18 to move to the right synchronously and compress the first spring 24. The first U-shaped seat 18, the first vertical frame 20, and the stirring device will move to the right synchronously with the first push plate 16 and the filter barrel 8. When the first U-shaped seat 18 continues to move to the right, through the engagement of the first sliding pin 21 and the first inclined groove 23, the stirring device will move downward into the filter barrel 8; when the first push plate 16 moves to the left and resets, at this time the first U-shaped seat 18 will move to the left and reset under the elastic force of the first spring 24 and move to the left and reset synchronously with the first push plate 16, that is, the corresponding stirring device will move to the left and upward to reset and will not have any movement interaction with the filter barrel 8.

[0041] A fixing seat 26 is fixedly connected to the upper end surface of the first vertical frame 20. A cover plate 33 is fixedly connected to the inner wall of the front end of the fixing seat 26. An extension plate 27 is fixedly connected to the upper end surface of the fixing seat 26. The stirring device includes a rotatable transmission shaft 32. Stirring rods 42 are respectively arranged on both sides of the lower end of the cover plate 33. When the transmission shaft 32 rotates, a structure can be formed in which the two stirring rods 42 move circularly, reciprocate forward and backward, and move inward or outward.

[0042] As Figure 4-7 shown, the fixing seat 26 is used to support the cover plate 33. When the stirring device works, that is, after the cover plate 33 descends to the designated position, that is, after the stirring rods 42 descend to the inner wall of the filter barrel 8, at this time the cover plate 33 will seal the upper ports of the filter barrel 8 and the purification barrel 7 to prevent liquid and materials from splashing when the stirring rods 42 work; through the arranged rotatable transmission shaft 32 and the stirring rods 42, when the transmission shaft 32 rotates, it can drive the corresponding stirring rods 42 to rotate circularly, reciprocate forward and backward, and move inward or outward. When the stirring rods 42 work, they can uniformly stir the stevia leaves inside the filter barrel 8 over a large area, thereby accelerating the precipitation of sugar.

[0043] At the center of the lower surface of the cover plate 33, an incomplete spur gear 36 is fixedly connected. An incomplete internal gear ring 35 fixedly connected to the cover plate 33 is provided on the outer periphery of the incomplete spur gear 36. A driving plate 34 rotatably connected to the lower surface of the incomplete internal gear and slidably connected to the transmission shaft 32 is provided at the lower surface of the incomplete internal gear. Planetary spur gears 37 engaged with the incomplete spur gear 36 and the incomplete internal gear ring 35 are respectively rotatably connected to both sides of the upper end of the driving plate 34. The stirring rods 42 are respectively installed at the lower ends of the corresponding planetary spur gears 37.

[0044] As Figure 7 shown, the transmission shaft 32 and the driving plate 34 are in spline connection. The transmission shaft 32 can move up and down on the inner wall of the driving plate 34, and when the transmission shaft 32 rotates, it can also make the driving plate 34 rotate; the driving plate 34 can rotate on the inner wall of the lower end of the incomplete internal gear ring 35. The installation and shape of the incomplete internal gear ring 35, the incomplete spur gear 36 and the planetary spur gear 37 are as Figure 7 shown. When the driving plate 34 rotates following the transmission shaft 32, it can drive the corresponding planetary spur gear 37 to rotate circumferentially. When the planetary spur gear 37 rotates circumferentially, through the engagement with the incomplete spur gear 36 and the incomplete internal gear ring 35, it can rotate circumferentially and reciprocate forward and backward, that is, drive the corresponding stirring rod 42 to rotate circumferentially and reciprocate forward and backward.

[0045] A second motor 28 is fixedly connected to the extension plate 27. A drive shaft 29 is fixedly connected to the output end of the second motor 28. A short cam 30 is slidably connected to the lower outer surface of the drive shaft 29. A limit pin 31 engaged with the short cam 30 is fixedly connected to the upper surface of the cover plate 33. The transmission shaft 32 is fixedly connected to the lower surface of the short cam 30; U-shaped support seats 38 are respectively fixedly connected to both sides of the lower surface of the driving plate 34. Second sliders 40 are respectively slidably connected to the inner walls of the U-shaped support seats 38. Couplings 39 are respectively coaxially fixedly connected to the lower ends of the planetary spur gears 37. Stirring shafts 41 rotatably connected to the second sliders 40 are fixedly connected to the output ends of the couplings 39. The stirring rods 42 are respectively fixedly connected to the outer surfaces of the corresponding stirring shafts 41. Ring sleeves 54 are respectively rotatably connected to the upper ends of the outer surfaces of the stirring shafts 41. Connecting rods 43 are respectively hinged to both sides of the lower end of the transmission shaft 32. The other ends of the connecting rods 43 are respectively hinged to the corresponding ring sleeves 54.

[0046] As Figure 6-8As shown, the second slider 40 is slidably connected to the inner wall of the U-shaped support base 38 in the front-back direction. A rotating shaft is fixedly connected to the inner wall at the center of the planetary spur gear 37, and the rotating shaft is rotatably connected to the inner wall of the driving plate 34, restricting the planetary spur gear 37 to only rotate. Through the provided coupling 39, the planetary spur gear 37 can be connected to the stirring shaft 41, that is, when the planetary spur gear 37 rotates, it can drive the stirring shaft 41 to rotate, and the stirring shaft 41 can also move back and forth, that is, move inward or outward. The coupling 39 is a prior art and will not be elaborated here. The function of the second motor 28 is to provide rotational power for the drive shaft 29 and the transmission shaft 32. The installation and shape of the drive shaft 29, the transmission shaft 32, the short cam 30, and the limit pin 31 are as Figure 6 shown. A support base is fixedly connected to the upper surface of the cover plate 33, and the limit pin 31 is fixedly connected to the inner wall of the support base, which is equivalent to the limit pin 31 being fixedly connected to the cover plate 33. The short cam 30 and the drive shaft 29 are in a spline connection. The short cam 30 is slidably connected to the inner wall of the drive shaft 29 in the up-down direction, and when the drive shaft 29 rotates, it will drive the short cam 30 to rotate. The transmission shaft 32 passes through the cover plate 33 and can move up and down and rotate within the inner wall of the cover plate 33. When the drive shaft 29 rotates, it can drive the short cam 30 to rotate. When the short cam 30 rotates and meshes with the limit pin 31, it will drive the short cam 30 and the transmission shaft 32 to rotate and move up and down reciprocally. When the transmission shaft 32 moves up and down reciprocally, it will drive the inner end of the corresponding connecting rod 43 to move up and down reciprocally, and the outer end of the connecting rod 43 will drive the corresponding ring sleeve 54 and the stirring shaft 41 to move inward or outward. Through the hinge connection between the ring sleeve 54 and the connecting rod 43, the corresponding stirring shaft 41 can be driven to move inward or outward without affecting the rotation of the stirring shaft 41. When the second motor 28 is started, it can drive the corresponding transmission shaft 32 to rotate and move up and down. When the transmission shaft 32 rotates, it can drive the corresponding driving plate 34 to rotate circumferentially. When the driving plate 34 rotates, it will drive the corresponding stirring rod 42 to rotate circumferentially and reciprocally rotate forward and backward. When the transmission shaft 32 moves up and down reciprocally, it will also drive the corresponding stirring shaft 41 and the stirring rod 42 to move inward or outward synchronously.

[0047] On the upper left side of the upper surface of the bottom plate 1, a second U-shaped seat 44 is slidably connected. A second push plate 17 that cooperates with the second U-shaped seat 44 is fixedly connected to the left end surface of the cross-shaped support plate 6. A second extension frame 47 is provided at the upper end of the second U-shaped seat 44. A second vertical frame 49 is slidably connected to the inner wall of the upper end of the second extension frame 47. A pressing arm 50 is fixedly connected to the upper end surface of the second vertical frame 49. A filter pressing plate 51 is fixedly connected to the lower end surface of the pressing arm 50. A second sliding pin 48 is fixedly connected to the inner wall of the lower end of the second vertical frame 49. Second track frames 52 are respectively fixedly connected to the front and rear ends on the upper left side of the upper surface of the bottom plate 1. Second inclined slots 53 that cooperate with the second sliding pin 48 are respectively formed in the second track frames 52. Second springs 45 are respectively fixedly connected to the front and rear sides of the left end surface of the second U-shaped seat 44. The other ends of the second springs 45 are respectively fixedly connected to second retaining seats 46 fixedly connected to the bottom plate 1.

[0048] As Figure 9-10 shown, the second U-shaped seat 44 is slidably connected to the upper surface of the bottom plate 1 in the left-right direction. The second retaining seat 46 serves to support and fix the second spring 45. The second spring 45 always has a driving force to the right on the second U-shaped seat 44, so that the second U-shaped seat 44, the second vertical frame 49, and the filter pressing plate 51 have a driving force downward; the second vertical frame 49 is slidably connected to the inner wall of the second extension frame 47 in the up-down direction; the installation and shape of the second track frame 52, the second inclined slot 53, and the second sliding pin 48 are as Figure 9 shown. When the second U-shaped seat 44 moves left and right, it can drive the corresponding second extension frame 47, second sliding pin 48, second vertical frame 49, and filter pressing plate 51 to move left. When the second sliding pin 48 moves left, through the engagement with the second inclined slot 53, the second sliding pin 48 and the second vertical frame 49 will move downward. When the second vertical frame 49 moves downward, it can drive the corresponding filter pressing plate 51 to move downward; when the cross-shaped support plate 6, the second push plate 17, the purification barrel 7, the filter barrel 8, etc. move left, that is, when the second push plate 17 moves left to contact the second U-shaped seat 44, when the second push plate 17 continues to move left, it will drive the corresponding second U-shaped seat 44, second sliding pin 48, filter pressing plate 51, etc. to move left synchronously. When the second sliding pin 48 moves left, through the engagement with the second inclined slot 53, the filter pressing plate 51 will move left and downward at the same time. When the filter pressing plate 51 moves downward, it will squeeze and filter the stevia leaves inside the filter barrel 8, and the liquid in the filter barrel 8 will flow back into the purification barrel 7.

[0049] An extraction method of an efficient stevioside purification device includes the following steps;

[0050] S1. By loading stevia leaves into the filter barrel 8 and filling the purification barrel 7 with an ethanol solution, by driving the purification barrel 7 to move right to a specified position, the filter barrel 8 can be moved downward to contact the ethanol solution, and the stirring device will also move downward into the inner wall of the filter barrel 8. When the stirring device works, it can uniformly stir the stevia leaves inside the filter barrel 8 and make full contact with the ethanol solution;

[0051] S2. When it is necessary to take out the stevia leaves in the filter barrel 8, by driving the purification barrel 7 to move leftward, the filter barrel 8 is moved leftward to cooperate with the draining device, that is, the corresponding pressing filter plate 51 moves downward into the filter barrel 8, and the stevia leaves inside the filter barrel 8 can be squeezed and drained.

[0052] When the present invention is in use, the purification barrel 7 is filled with a solution, and the filter barrel 8 is provided with a plurality of filter holes. The inner wall of the filter barrel 8 is equipped with stevia leaves. After the filter barrel 8 moves downward into the purification barrel 7, the stevia leaves can come into contact with the solution, and the sugar in the stevia leaves can precipitate into the solution; after filling the purification barrel 7 with the solution and loading the stevia leaves into the filter barrel 8, by driving the purification barrel 7 to move rightward, the filter barrel 8 can be moved downward into the inner wall of the purification barrel 7 so that the stevia leaves come into contact with the solution. When the purification barrel 7 continues to move rightward, the stirring device can be moved downward into the filter barrel 8. When the stirring device works, the stevia leaves and the liquid inside the filter barrel 8 can be mixed and stirred to accelerate the precipitation of sugar; when it is necessary to take out the stevia leaves in the filter barrel 8, by driving the purification barrel 7 to move leftward, after moving leftward to a specified position, the corresponding filter barrel 8 will move upward to the top position, that is, the filter barrel 8 moves upward to the upper end position of the purification barrel 7 to separate the stevia leaves from the solution. When the purification barrel 7 continues to move leftward, it will cooperate with the corresponding draining device, that is, the pressing filter plate 51 will move downward into the inner wall of the filter barrel 8, squeeze the stevia leaves in the filter barrel 8, and drain the liquid in the stevia leaves. After draining, drive the purification barrel 7 to move rightward to the initial position, and then the dried stevia leaves can be taken out. When taking the material, the liquid of the dried stevia can be drained to prevent the liquid from spilling and leaking, and the working efficiency is improved.

[0053] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar methods to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. An efficient stevia purification device, comprising a bottom plate (1), characterized in that: The upper end of the bottom plate (1) is provided with a purification barrel (7) that can move left and right, the upper end of the purification barrel (7) is provided with a filter barrel (8), and the right side of the upper end of the bottom plate (1) is provided with a stirring device. When the purification barrel (7) moves to the right, a structure is formed in which the filter barrel (8) moves downward and the stirring device moves downward to enter the inner wall of the filter cartridge; a drying control device is provided on the left side of the upper end of the bottom plate (1), and the drying control device includes a filter press plate (51) that cooperates with the filter barrel (8). When the purification barrel (7) moves to the left, a structure is formed in which the filter press plate (51) moves downward to enter the inner wall of the filter cartridge; A first motor (3) is fixedly connected to the left side of the upper end surface of the bottom plate (1), a long threaded rod (4) is fixedly connected to the output end of the first motor (3), a threaded seat (5) slidably connected to the bottom plate (1) is threadedly connected to the outer surface of the long threaded rod (4), a cross support plate (6) is fixedly connected to the upper end surface of the threaded seat (5), and the purification barrel (7) is fixedly connected to the upper end of the cross support plate (6); The front and rear ends of the outer surface of the purification barrel (7) are respectively fixedly connected with side plates (11), the inner walls of the side plates (11) are respectively slidably connected with first sliders (10), the inner walls of the first sliders (10) are respectively fixedly connected with long pins (9), and the filter barrel (8) is fixedly connected to the outer surfaces of the two long pins (9); The front and rear sides of the middle of the upper end surface of the bottom plate (1) are respectively fixedly connected with guide frames (12), and the guide frames (12) are respectively provided with guide grooves matching with the long pins (9); the guide grooves include a lower transverse groove, a long oblique groove and an upper transverse groove; The right end surface of the cross support plate (6) is fixedly connected with a first push plate (16); the right side of the upper end surface of the bottom plate (1) is slidably connected with a first U-shaped seat (18); the upper end of the first U-shaped seat (18) is provided with a first extension frame (19); the upper end inner wall of the first extension frame (19) is slidably connected with a first vertical frame (20); The stirring device is mounted on a first vertical frame (20), a first sliding pin (21) is fixedly connected to the inner wall of the lower end of the first vertical frame (20), a first track frame (22) is fixedly connected to the front and rear ends of the right side of the upper end surface of the bottom plate (1), and the first track frame (22) is respectively provided with a first inclined groove (23) matched with the first sliding pin (21); a first spring (24) is fixedly connected to the front and rear ends of the right end surface of the first U-shaped seat (18), and the other end of the first spring (24) is respectively fixedly connected to a first stopper (25) fixed to the bottom plate (1); The left side of the upper end surface of the bottom plate is slidably connected to the second U-shaped seat, and the left end surface of the cross support plate is fixedly connected to the second push plate matching the second U-shaped seat, and the upper end of the second U-shaped seat is provided with a second extension frame, and the upper inner wall of the second extension frame is slidably connected to the second vertical frame, the upper end surface of the second vertical frame is fixedly connected to the pressure arm, and the filter press plate is fixedly connected to the lower end surface of the pressure arm, and the lower inner wall of the second vertical frame is fixedly connected to the second sliding pin, and the front and rear ends of the left side of the upper end surface of the bottom plate are respectively fixedly connected to the second track frame, and the second track frame is respectively provided with second inclined grooves matching the second sliding pin, and the front and rear sides of the left end surface of the second U-shaped seat are respectively fixedly connected to the second spring, and the other end of the second spring is respectively fixedly connected to the second stop seat fixed to the bottom plate.

2. The high-efficiency stevioside purification device according to claim 1, characterized in that: The upper end surface of the first vertical frame (20) is fixedly connected to a fixing seat (26), the inner wall of the front end of the fixing seat (26) is fixedly connected to a cover plate (33), and the upper end surface of the fixing seat (26) is fixedly connected to an extension plate (27). The stirring device comprises a rotatable transmission shaft (32), and stirring rods (42) are respectively arranged on both sides of the lower end of the cover plate (33). When the transmission shaft (32) rotates, the two stirring rods (42) can form a structure in which the two stirring rods (42) move in a circular motion, reciprocate forward and reverse, and move inward or outward.

3. The high-efficiency stevioside purification device according to claim 2, characterized in that: An incomplete spur gear (36) is fixedly connected at the center of the lower end surface of the cover plate (33); an incomplete internal gear ring (35) fixedly connected to the cover plate (33) is provided at the outer periphery of the incomplete spur gear (36); a driving plate (34) slidably connected to the transmission shaft (32) is rotatably connected to the lower end surface of the incomplete internal gear; planetary spur gears (37) matching the incomplete spur gear (36) and the incomplete internal gear ring (35) are rotatably connected to both sides of the upper end of the driving plate (34); and the stirring rods (42) are respectively mounted on the lower ends of the corresponding planetary spur gears (37).

4. The high-efficiency stevioside purification device according to claim 3, characterized in that: The extension plate (27) is fixedly connected to a second motor (28), an output end of the second motor (28) is fixedly connected to a driving shaft (29), a short cam (30) is slidably connected to the lower end of the outer surface of the driving shaft (29), a limit pin (31) matched with the short cam (30) is fixedly connected to the upper end surface of the cover plate (33), and the transmission shaft (32) is fixedly connected to the lower end surface of the short cam (30); U-shaped support seats (38) are respectively fixedly connected to both sides of the lower end surface of the driving plate (34), and the inner wall of the U-shaped support seat (38) is respectively slidably connected to the second The slider (40) and the lower end of the planetary spur gear (37) are coaxially fixedly connected with a coupling (39), the output end of the coupling (39) is fixedly connected with a stirring shaft (41) rotatably connected to the second slider (40), the stirring rod (42) is respectively fixedly connected to the outer surface of the corresponding stirring shaft (41), the upper end of the outer surface of the stirring shaft (41) is rotatably connected with a circular ring sleeve (54), the lower end of the transmission shaft (32) is respectively hinged with a connecting rod (43), and the other end of the connecting rod (43) is respectively hinged on the corresponding circular ring sleeve (54).

5. An extraction method using the efficient stevioside purification device according to any one of claims 1 to 4, characterized in that: The steps include: S1. Stevia leaves are placed in the filter barrel (8), and ethanol solution is poured into the purification barrel (7). The purification barrel (7) is driven to move rightward to a specified position, so that the filter barrel (8) moves downward to contact with the ethanol solution, and the stirring device moves downward to enter the inner wall of the filter barrel (8). When the stirring device is working, the stevia leaves in the filter barrel (8) can be evenly stirred to fully contact with the ethanol solution. S2. When the stevia leaves in the filter barrel (8) need to be taken out, the purification barrel (7) is driven to move to the left, so that the filter barrel (8) moves to the left to cooperate with the drying control device, that is, the corresponding filter press plate (51) moves downward to the inside of the filter barrel (8), so that the stevia leaves in the filter barrel (8) can be squeezed and dried.

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