阅读说明：本技术 一种葡萄干的高效加工的工艺 (Efficient processing technology of raisins ) 是由 翟龙 于 2021-06-24 设计创作，主要内容包括：本发明公开了一种葡萄干的高效加工的工艺,涉及葡萄加工技术领域,针对现有的葡萄干制作过程中风干效率低下的问题,现提出如下方案,其包括风干箱,所述风干箱内固定连接有用于风干葡萄的风干装置,所述风干箱内固定连接有步进电机,所述烘干板下侧固定连接有集尘组件,所述风干箱内设有若干葡萄翻动组件,所述风干箱内设有葡萄收集组件。本加工工艺可以快速对葡萄进行风干作业,有效提升了风干效果和风干速率,还设置有葡萄干自动收集装置,提升工作的效率。(The invention discloses a high-efficiency processing technology of raisins, relates to the technical field of grape processing, and aims at solving the problem of low air drying efficiency in the existing raisin manufacturing process. This processing technology can air-dry the operation to the grape fast, has effectively promoted air-dry effect and air-dry speed, still is provided with raisin automatic collection device, promotes the efficiency of work.)

1. A process for efficiently processing raisins comprises the following processing steps:

and S1, selecting corresponding grapes, wherein the grapes are required to be thin in skin and seedless. Grape flesh is plump and soft, sugar content is high, appearance is attractive, and fruits are fully ripe.

S2, cutting the grapes obtained in the S1 to remove too small, damaged and rotten fruit grains, cutting the fruit clusters into a plurality of small clusters when the fruit clusters are too large, and then taking the stems.

And S3, placing the grapes obtained in the step S2 in cleaning equipment, and cleaning the grapes through the cleaning equipment to remove impurities and dirt outside the grapes and improve the cleanliness of the grapes.

S4, taking the cleaned grapes out of the cleaning equipment, placing the cleaned grapes in a centrifuge for centrifugal dehydration to remove water on the surfaces of the grapes, then placing the grapes in an air drying box (1), and carrying out quick air drying treatment on the grapes through the air drying box (1).

And S5, taking the air-dried raisins out of the air drying box (1), naturally cooling the air-dried raisins to room temperature, and then packaging and storing the air-dried raisins.

2. The efficient processing technology of the raisins as claimed in claim 1, characterized in that an air drying device for air drying the grapes is fixedly connected in the air drying box (1), a stepping motor (2) is fixedly connected in the air drying box (1), a rotating shaft (3) is connected to the output end of the stepping motor (2) in a transmission manner, the upper end of the rotating shaft (3) is rotatably connected to the inner wall of the air drying box (1) through a bearing, a plurality of drying plates (4) are fixedly connected to the rotating shaft (3), a containing groove is formed in the upper side of each drying plate (4), uniformly distributed ventilation openings (5) are formed in the circumferential direction of each drying plate (4), uniformly distributed through holes (23) are formed in the lower side of each drying plate (4), a dust collecting component is fixedly connected to the lower side of each drying plate (4), and a plurality of grape turning components are arranged in the air drying box (1), a grape collecting component is arranged in the air drying box (1).

3. The efficient raisin processing process according to claim 2, wherein the air drying device comprises a transverse plate (6) fixedly connected in an air drying box (1), a threaded rod (7) is rotatably connected in the air drying box (1) through a bearing, symmetrically distributed threads are arranged on the threaded rod (7) and are opposite in thread direction, uniformly distributed air inlets (8) are arranged on one side, close to the threaded rod (7), of the air drying box (1), a limiting rod (9) is fixedly connected to the upper side of the transverse plate (6), symmetrically distributed thread sleeves (10) are slidably sleeved on the limiting rod (9), the thread sleeves (10) are in thread fit with the threaded rod (7) to work, a fan (11) is fixedly connected to one side, close to the drying plate (4), of the thread sleeves (10), an electric heating wire (12) is fixedly connected to the upper side of the transverse plate (6), the electric heating wire (12) is located between the fan (11) and the drying plate (4), a threaded rod (7) located below the transverse plate (6) and the output end of the stepping motor (2) are fixedly connected with a driving wheel (13), a belt (14) is arranged outside the driving wheel (13), and the driving wheels (13) are in transmission connection through the belt (14).

4. The efficient raisin processing process according to claim 2, wherein the grape turning assembly comprises a plurality of rotating rods (15) which are rotatably connected in the air drying box (1), the rotating rods (15) are fixedly connected with turning rods (16) which are uniformly distributed, the turning rods (16) are positioned in the containing grooves, the rotating shaft (3) is rotatably connected with a plurality of sleeves (17), one end, close to the rotating shaft (3), of each rotating rod (15) is rotatably connected to the corresponding sleeve (17) through a bearing, the rotating shaft (3) is fixedly connected with a plurality of driving gears (18), one end, close to the corresponding sleeve (17), of each rotating rod (15) is fixedly connected with a driven gear (19), and the driving gears (18) are meshed with the driven gears (19).

5. The efficient raisin processing process according to claim 2, wherein the dust collection assembly comprises a dust collection plate (20) fixedly connected with the lower side of the drying plate (4), the upper side of the dust collection plate (20) is open and matched with a through hole (23), the dust collection plate (20) is arranged in an inclined manner, a dust falling port (21) is formed in the lower side of the dust collection plate (20), a dust collection box (22) is fixedly connected with the lower side of the dust collection plate (20), and the dust collection box (22) is matched with the dust falling port (21).

6. The efficient processing technology of the raisins as claimed in claim 3, characterized in that the grape collection assembly comprises a mounting plate (24) fixedly connected above a transverse plate (6), a plurality of limiting grooves (25) are formed in the mounting plate (24), a connecting sleeve (26) is longitudinally and slidably connected in the limiting grooves (25), a vertical rod (27) is fixedly connected in the limiting grooves (25), the connecting sleeve (26) is slidably connected in the vertical rod (27), a first hydraulic cylinder (28) is fixedly connected to the upper side of the transverse plate (6), the connecting sleeve (26) located at the lowermost part is fixedly connected to the piston end of the first hydraulic cylinder (28), a supporting plate (29) is fixedly connected to one side of the connecting sleeve (26) close to the drying plate (4), the supporting plates (29) are connected through a connecting rod (30), and a collection box (31) is hinged to the lower side of the supporting plate (29) through a hinge, the collecting box (31) is matched with the drying plate (4), the inside of the supporting plate (29) located at the lowest position is hinged with a second hydraulic cylinder (32) through a hinge, the piston end of the second hydraulic cylinder (32) is hinged to the upper side of the collecting box (31) through a hinge, one side, close to the mounting plate (24), of the collecting box (31) is provided with a transmission rod (33), the supporting plate (29) is provided with a rectangular groove (34), the transmission rod (33) is rotatably connected to one side of the collecting box (31), and the transmission rod (33) is in sliding fit with the rectangular groove (34).

Technical Field

The invention relates to the technical field of grape processing, in particular to a process for efficiently processing raisins.

Background

Raisins are the fruits of grapes that are sun-dried or sun-dried in the shade. The grape is also named as Caolong bead and Syzygium jambos. Mainly produced in Xinjiang, Gansu, Shanxi, Hebei, Shandong, etc. Collected in late summer and early autumn, and used fresh or dried for later use. The dried grape flesh is soft, fresh and sweet, and is rich in nutrition.

The preparation of raisin is divided into natural drying and artifical drying usually, and the manual work is dried and is arranged the grape in the baking house and carry out high temperature drying, and current drying device can not turn the grape, and the grape is because being heated the inequality, leads to air-dry inefficiency, and the air-dry effect is general, for this reason we provide the process of the high-efficient processing of raisin to solve above-mentioned problem.

Disclosure of Invention

The invention provides a high-efficiency processing technology of raisins, which solves the problem of low air drying efficiency in the existing raisin making process.

In order to achieve the purpose, the invention adopts the following technical scheme:

and S1, selecting corresponding grapes, wherein the grapes are required to be thin in skin and seedless. Grape flesh is plump and soft, sugar content is high, appearance is attractive, and fruits are fully ripe.

S2, cutting the grapes obtained in the S1 to remove too small, damaged and rotten fruit grains, cutting the fruit clusters into a plurality of small clusters when the fruit clusters are too large, and then taking the stems.

And S3, placing the grapes obtained in the step S2 in cleaning equipment, and cleaning the grapes through the cleaning equipment to remove impurities and dirt outside the grapes and improve the cleanliness of the grapes.

S4, taking the cleaned grapes out of the cleaning equipment, placing the cleaned grapes in a centrifuge for centrifugal dehydration to remove water on the surfaces of the grapes, then placing the grapes in an air drying box, and carrying out quick air drying treatment on the grapes through the air drying box.

And S5, taking out the air-dried raisins from the air-drying box, naturally cooling to room temperature, and then packaging and storing.

Preferably, fixedly connected with is used for air-drying the air-dry device of grape in the air-dry incasement, fixedly connected with step motor in the air-dry incasement, step motor output end transmission is connected with the pivot, the pivot upper end is rotated through the bearing and is connected in air-dry incasement wall, a plurality of drying plates of pivot fixedly connected with, drying plate upside has been seted up and has been held the groove, the even vent that distributes is seted up to drying plate circumference, the even through-hole that distributes is seted up to drying plate downside, drying plate downside fixedly connected with collection dirt subassembly, the air-dry incasement is equipped with a plurality of grapes and turns the subassembly, the air-dry incasement is equipped with grape collection subassembly.

Preferably, the air-dry device includes the diaphragm of fixed connection in the air-dry incasement, the air-dry incasement rotates through the bearing and is connected with the threaded rod, set up the screw thread of symmetric distribution on the threaded rod, and screw thread opposite direction, the air-dry case is close to one side of threaded rod and sets up the even air intake of distribution, diaphragm upside fixedly connected with gag lever post, sliding sleeve has the thread bush of symmetric distribution on the gag lever post, thread bush and threaded rod screw-thread fit work, the thread bush is close to one side fixedly connected with fan of drying plate, diaphragm upside fixedly connected with heating wire, the heating wire is located between fan and the drying plate, is located threaded rod and step motor output fixedly connected with drive wheel of diaphragm below, the drive wheel outside all is equipped with the belt, connect through belt transmission between the drive wheel.

Preferably, the grape turns the subassembly and includes a plurality of bull sticks of air-dry box internal rotation connection, fixedly connected with distributes the even pole that turns on the bull stick, the pole that turns is located and holds the inslot, it is connected with a plurality of sleeves to rotate in the pivot, the one end that the bull stick is close to the pivot is passed through the bearing and is rotated and connect in the sleeve, a plurality of driving gears of pivot fixedly connected with, the bull stick is close to telescopic one end fixedly connected with driven gear, the driving gear meshes with driven gear mutually.

Preferably, the dust collecting assembly comprises a dust collecting plate fixedly connected with the lower side of the drying plate, the upper side of the dust collecting plate is open and matched with the through hole, the dust collecting plate is inclined, a dust falling port is formed in the lower side of the dust collecting plate, a dust collecting box is fixedly connected with the lower side of the dust collecting plate, and the dust collecting box is matched with the dust falling port.

Preferably, the grape collecting component comprises a mounting plate fixedly connected above the transverse plate, a plurality of limiting grooves are formed in the mounting plate, connecting sleeves are longitudinally and slidably connected in the limiting grooves, vertical rods are fixedly connected in the limiting grooves and slidably connected to the vertical rods, a first hydraulic cylinder is fixedly connected to the upper side of the transverse plate, the connecting sleeve positioned at the lowest part is fixedly connected to the piston end of the first hydraulic cylinder, a supporting plate is fixedly connected to one side of each connecting sleeve, which is close to the drying plate, the supporting plates are connected through connecting rods, a collecting box is hinged to the lower side of each supporting plate through a hinge, the collecting box is matched with the drying plate, a second hydraulic cylinder is hinged to the inside of the supporting plate positioned at the lowest part through a hinge, the piston end of the second hydraulic cylinder is hinged to the upper side of the collecting box through a hinge, a transmission rod is arranged at one side of the collecting box, which is close to the mounting plate, the supporting plate is provided with a rectangular groove, the transmission rod is rotatably connected to one side of the collecting box, and the transmission rod is in sliding fit with the rectangular groove.

In the invention:

through the cooperation use of air-drying box, step motor, the pivot, the board of drying, the vent, the diaphragm, the threaded rod, the air intake, the gag lever post, the thread bush, the fan, the heating wire, the drive wheel, the belt, the bull stick, the turnover pole, the sleeve, the driving gear, driven gear, the collection dirt board, the dust fall mouth, the dust collection box, the mounting panel, the spacing groove, the adapter sleeve, the montant, a pneumatic cylinder, the backup pad, the connecting rod, the collecting box, No. two pneumatic cylinders, the transfer line, the rectangular channel, the through-hole, the beneficial effect of production has:

1. the grape turning assembly is provided with the grape turning assembly and the air drying device, the air drying device can drive the fan to move longitudinally, so that grapes are heated uniformly, the influence of overhigh local temperature on the air drying effect is prevented, the grape turning assembly can drive the turning rod to turn the grapes, and the air drying effect and speed of the grapes are further improved.

2. The grape collection assembly is further arranged, the collection box can be driven to move longitudinally and deflect, the air-dried raisins are automatically collected by matching with the movement of the drying plate, manual collection is avoided, and the working efficiency is reduced.

Drawings

FIG. 1 is a schematic structural diagram of a drying box in the process of high-efficiency processing of raisins according to the present invention;

FIG. 2 is a schematic structural diagram of a drying plate in the efficient raisin processing process according to the present invention;

FIG. 3 is a schematic structural diagram of a collecting box in the process of high-efficiency processing of raisins according to the present invention;

fig. 4 is a partially enlarged view of a portion a in fig. 1.

Reference numbers in the figures: 1. an air drying box; 2. a stepping motor; 3. a rotating shaft; 4. drying the plate; 5. a vent; 6. a transverse plate; 7. a threaded rod; 8. an air inlet; 9. a limiting rod; 10. a threaded sleeve; 11. a fan; 12. an electric heating wire; 13. a driving wheel; 14. a belt; 15. a rotating rod; 16. turning over a rod; 17. a sleeve; 18. a driving gear; 19. a driven gear; 20. a dust collecting plate; 21. a dust falling port; 22. a dust collection box; 23. a through hole; 24. mounting a plate; 25. a limiting groove; 26. connecting sleeves; 27. a vertical rod; 28. a first hydraulic cylinder; 29. a support plate; 30. a connecting rod; 31. a collection box; 32. a second hydraulic cylinder; 33. a transmission rod; 34. a rectangular groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-4, a process for efficiently processing raisins comprises the following processing steps:

and S1, selecting corresponding grapes, wherein the grapes are required to be thin in skin and seedless. Grape flesh is plump and soft, sugar content is high, appearance is attractive, and fruits are fully ripe.

S2, cutting the grapes obtained in the S1 to remove too small, damaged and rotten fruit grains, cutting the fruit clusters into a plurality of small clusters when the fruit clusters are too large, and then taking the stems.

And S3, placing the grapes obtained in the step S2 in cleaning equipment, and cleaning the grapes through the cleaning equipment to remove impurities and dirt outside the grapes and improve the cleanliness of the grapes.

S4, taking the cleaned grapes out of the cleaning equipment, placing the cleaned grapes in a centrifuge for centrifugal dehydration to remove water on the surfaces of the grapes, then placing the grapes in an air drying box 1, and carrying out rapid air drying treatment on the grapes through the air drying box 1.

And S5, taking out the air-dried raisins from the air drying box 1, naturally cooling to room temperature, and then packaging and storing.

An air drying device for air-drying grapes is fixedly connected in an air drying box 1, a stepping motor 2 is fixedly connected in the air drying box 1, the output end of the stepping motor 2 is in transmission connection with a rotating shaft 3, the upper end of the rotating shaft 3 is rotatably connected to the inner wall of the air drying box 1 through a bearing, the rotating shaft 3 is fixedly connected with a plurality of drying plates 4, the upper sides of the drying plates 4 are provided with containing grooves, the drying plates 4 are circumferentially provided with uniformly distributed ventilation openings 5, the lower sides of the drying plates 4 are provided with uniformly distributed through holes 23, the lower sides of the drying plates 4 are fixedly connected with dust collecting components, a plurality of grape turning components are arranged in the air drying box 1, grape collecting components are arranged in the air drying box 1, grapes are uniformly arranged on the drying plates 4, the air drying device and the stepping motor 2 are started, the rotating shaft 3 is driven by the rotating of the stepping motor 2, the rotating shaft 3 drives the drying plates 4 to rotate, the grapes are uniformly heated by hot air fed by the air drying device, the air drying effect is improved.

The air drying device comprises a transverse plate 6 fixedly connected in an air drying box 1, a threaded rod 7 is rotatably connected in the air drying box 1 through a bearing, symmetrically distributed threads are arranged on the threaded rod 7, the thread directions are opposite, an air inlet 8 which is uniformly distributed is arranged on one side of the air drying box 1 close to the threaded rod 7, a limiting rod 9 is fixedly connected on the upper side of the transverse plate 6, a threaded sleeve 10 which is symmetrically distributed is slidably sleeved on the limiting rod 9, the threaded sleeve 10 is in thread fit with the threaded rod 7 to work, a fan 11 is fixedly connected on one side of the threaded sleeve 10 close to a drying plate 4, an electric heating wire 12 is fixedly connected on the upper side of the transverse plate 6, the threaded rod 7 and the output end of a stepping motor 2 which are positioned below the transverse plate 6, belts 14 are arranged outside the driving wheels 13, the driving wheels 13 are in transmission connection through the belts 14 to electrify the electric heating wire 12, open fan 11, fan 11 is in passing through air intake 8 suction air-dry box 1 with the air, send to stoving board 4 after the heating of heating wire 12 again, air-dry fast grape, step motor 2 rotates and drives drive wheel 13 simultaneously and rotates, drive wheel 13 rotates and drives belt 14 motion, belt 14 motion drives drive wheel 13 and rotates, drive wheel 13 rotates and drives threaded rod 7 and rotates, threaded rod 7 rotates and drives the 10 longitudinal motion of thread bush, the motion of thread bush 10 drives fan 11 motion, make hot-blast transport even, prevent that the local temperature is unbalanced and lead to grape air-dry effect poor.

Grape turns subassembly and includes a plurality of bull sticks 15 of 1 internal rotation connection of air-drying box, fixedly connected with distributes even turnover pole 16 on the bull stick 15, turnover pole 16 is located and holds the inslot, it is connected with a plurality of sleeves 17 to rotate in the pivot 3, the one end that bull stick 15 is close to pivot 3 is passed through the bearing and is rotated and connect in sleeve 17, a plurality of driving gear 18 of 3 fixedly connected with of pivot, bull stick 15 is close to sleeve 17's one end fixedly connected with driven gear 19, driving gear 18 meshes with driven gear 19 mutually, step motor 2 rotates and drives pivot 3 and rotate, pivot 3 rotates and drives driving gear 18 and rotate, driving gear 18 rotates and drives driven gear 19 and rotate, driven gear 19 rotates and drives bull stick 15 and rotate, bull stick 15 rotates and drives turnover pole 16 and turns the raisins, make the grape be heated evenly, further promote the air-drying effect.

Dust collection assembly includes 4 downside fixed connection's of drying plate dust collecting plate 20, and dust collecting plate 20 upside is uncovered setting, with through-hole 23 cooperation, sets up for the slope in the dust collecting plate 20, and dust falling port 21 has been seted up to dust collecting plate 20 downside, and dust collecting plate 20 downside fixedly connected with dust collection box 22, dust collection box 22 and dust falling port 21 cooperation, the grape turns the in-process, is stained with the impurity that attaches on the grape and passes through-hole 23 and get into dust collecting plate 20, falls into in dust collection box 22 at last.

The grape collection assembly comprises a mounting plate 24 fixedly connected with the upper side of a transverse plate 6, a plurality of limiting grooves 25 are formed in the mounting plate 24, connecting sleeves 26 are longitudinally and slidably connected in the limiting grooves 25, vertical rods 27 are fixedly connected in the limiting grooves 25, the connecting sleeves 26 are slidably connected to the vertical rods 27, hydraulic cylinders 28 are fixedly connected to the upper side of the transverse plate 6, the connecting sleeves 26 located at the lowest part are fixedly connected to the piston ends of the hydraulic cylinders 28, one side of each connecting sleeve 26, which is close to the drying plate 4, is fixedly connected with a supporting plate 29, the supporting plates 29 are connected through connecting rods 30, a collecting box 31 is hinged to the lower side of each supporting plate 29 through hinges, the collecting box 31 is matched with the drying plate 4, a second hydraulic cylinder 32 is hinged to the inner part of the supporting plate 29 located at the lowest part through hinges, and the piston ends of the second hydraulic cylinders 32 are hinged to the upper side of the collecting box 31 through hinges, one side of the collection box 31 close to the mounting plate 24 is provided with a transmission rod 33, the support plate 29 is provided with a rectangular groove 34, the transmission rod 33 is rotatably connected to one side of the collection box 31, the transmission rod 33 is in sliding fit with the rectangular groove 34, after the drying is finished, the first hydraulic cylinder 28 is started to drive the connecting sleeve 26 to move longitudinally, the connecting sleeve 26 drives the support plate 29 to move, the support plate 29 drives the collection box 31 to move longitudinally until being matched with the drying plate 4, the second hydraulic cylinder 32 is started to drive the collection box 31 to rotate, so that the collection box 31 and the drying plate 4 are at a certain angle, the stepping motor 2 is started to drive the drying plate 4 to rotate, the collection box 31 can collect the raisins, and the working efficiency is improved.

The working principle is as follows:

when the grape air drying machine is used, grapes to be processed are uniformly placed on a drying plate 4, an electric heating wire 12 is electrified, a stepping motor 2 and a fan 11 are started, the fan 11 sucks air into an air drying box 1 through an air inlet 8, the air is heated by the electric heating wire 12 and then is sent to the drying plate 4, the grapes are quickly dried, the stepping motor 2 rotates to drive a rotating shaft 3 to rotate, the rotating shaft 3 rotates to drive the drying plate 4 to rotate, so that the grapes are dried uniformly, the stepping motor 2 rotates to drive a driving wheel 13 to rotate simultaneously, the driving wheel 13 rotates to drive a belt 14 to move, the belt 14 moves to drive the driving wheel 13 to rotate, the driving wheel 13 rotates to drive a threaded rod 7 to rotate, the threaded rod 7 rotates to drive a threaded sleeve 10 to move longitudinally, the threaded sleeve 10 moves to drive the fan 11 to move, so that the hot air is uniformly conveyed, the problem that the grape air drying effect is poor due to unbalanced local temperature is solved, the rotating shaft 3 rotates to drive a driving gear 18 to rotate simultaneously, the driving gear 18 rotates to drive the driven gear 19 to rotate, the driven gear 19 rotates to drive the rotating rod 15 to rotate, the rotating rod 15 rotates to drive the turning rod 16 to turn the raisins, so that the grapes are uniformly heated, the air drying effect is further improved, and in the turning process, the impurities adhered on the grapes enter the dust collecting plate 20 through the through holes 23 and finally fall into the dust collecting box 22, after the drying is finished, when the grapes are cooled to the room temperature, the first hydraulic cylinder 28 is started to drive the connecting sleeve 26 to move longitudinally, the connecting sleeve 26 moves to drive the supporting plate 29 to move, the supporting plate 29 moves to drive the collecting box 31 to move longitudinally until the collecting box is matched with the drying plate 4, the second hydraulic cylinder 32 is started to drive the collecting box 31 to rotate, make collecting box 31 and stoving board 4 be certain angle, open step motor 2, drive stoving board 4 and rotate, collecting box 31 can be collected raisins, has promoted work efficiency.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.