Cleaning and airing device for stevia rebaudiana leaves

By introducing a cleaning device consisting of a rotating shaft, rotating disk, inclined plate, and silicone strip into the stevia leaf cleaning device, as well as a filter screen and reciprocating motion in the drainage device, the problems of leaf crushing and secondary pollution during the cleaning process are solved, achieving efficient cleaning and improved cleanliness.

CN223970513UActive Publication Date: 2026-03-06ANHUI WEITIAN BIOTECHNOLOGY DEV CO LTD
View PDF 1 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-19
Publication Date
2026-03-06

AI Technical Summary

Technical Problem

Existing stevia leaf washing devices tend to crush the leaves during the rubbing and washing process, resulting in poor quality after drying.

Method used

A cleaning device comprising a rotating shaft, a rotating disk, an inclined plate, and a silicone strip is designed. It cleans by vortex flow and scrapes away debris using the silicone strip. Combined with a drainage device, the debris is discharged through a filter and reciprocating motion, avoiding crushing and secondary pollution.

Benefits of technology

It effectively prevents stevia leaves from being crushed during the washing process, ensuring washing effectiveness and quality, reducing impurities in the water, and improving cleaning cleanliness.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223970513U_ABST
    Figure CN223970513U_ABST
Patent Text Reader

Abstract

The utility model relates to the technical field of stevia rebaudiana leaf cleaning, and provides a stevia rebaudiana leaf cleaning and airing device which comprises an equipment shell, a cleaning groove is formed in the equipment shell, and a cleaning device for preventing stevia rebaudiana leaves from being rubbed to be broken is installed on the equipment shell. According to the stevia rebaudiana cleaning device, the rotating shaft rotates to drive the rotating disc to rotate, the rotating disc rotates to drive the inclined plate to rotate, water in the cleaning tank can form vortexes under rotation of the inclined plate, stevia rebaudiana leaves in the cleaning tank move, and when the surfaces of the stevia rebaudiana leaves make contact with silica gel strips on the cleaning plate, the stevia rebaudiana leaves are cleaned. And the silica gel strip can scrape sundries on the stevia rebaudiana leaves, so that the situation that the stevia rebaudiana leaves are rubbed to be broken when rubbed and cleaned is avoided.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of stevia leaf cleaning technology, specifically a device for cleaning and drying stevia leaves. Background Technology

[0002] Stevia is a perennial herbaceous plant belonging to the Asteraceae family and the Stevia genus. Its stem is erect, slightly woody at the base, tender at the top, and densely covered with short hairs. The corolla is light purplish-red or white at the base and white at the top. The achenes are linear, slightly flattened, brown, and have pappus.

[0003] Patent document CN216988904U discloses a device for washing and drying stevia leaves. The protected claim states that "the mounting sleeve is set at the top of the openings on both sides of the washing basket, which allows the washing basket to be located on one side of the support leg, facilitating the stirring and washing of the stevia leaves inside the washing basket. It also facilitates the placement of the washing tank through the support leg to soak the stevia leaves inside the washing basket. After washing, the leaves can be directly placed in the washing basket for drying, and the installation and disassembly are convenient." However, during the rubbing and washing of the stevia leaves, they may be crushed, resulting in poor quality of the dried stevia leaves. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a device for cleaning and drying stevia leaves, which solves the problem of crushing stevia leaves during the rubbing and cleaning process.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A device for washing and drying stevia leaves includes a housing, a washing tank on the housing, and a cleaning device installed on the housing to prevent the stevia leaves from being crushed.

[0007] The cleaning device includes four sets of rotating shafts rotatably mounted on the equipment housing. Each set of rotating shafts is fixedly mounted with a rotating disk. Four sets of inclined plates are evenly mounted on the rotating disks. Each set of inclined plates is fixedly mounted with a cleaning plate. Multiple sets of silicone strips are evenly mounted on the cleaning plate.

[0008] Preferably, a drive device is installed inside the equipment housing. The drive device includes a motor fixedly mounted on the equipment housing. A first rotating rod rotatably connected to the equipment housing is fixedly mounted on the output end of the motor. Two sets of worm gears are fixedly mounted on the first rotating rod. Two sets of symmetrical second rotating rods are rotatably mounted inside the equipment housing. A worm wheel meshing with the worm gear is fixedly mounted on each set of second rotating rods. Meshing helical teeth are fixedly mounted on the second rotating rods and the rotating shaft.

[0009] Preferably, a drainage device is installed on the equipment housing. The drainage device includes a limiting plate that is slidably installed inside the equipment housing. Two sets of symmetrical fixed rods that are slidably connected to the limiting plate are fixedly installed on the equipment housing. A reciprocating screw that is threadedly connected to the limiting plate is fixedly installed on the second rotating rod.

[0010] Preferably, the limiting plate has four sets of No. 1 drainage grooves, and the outer shell of the equipment has four sets of No. 2 drainage grooves corresponding to the positions of the No. 1 drainage grooves.

[0011] Preferably, the device housing has a slot, a plate is slidably mounted on the slot, and four sets of filters are mounted on the plate.

[0012] Preferably, two sets of symmetrical support frames are fixedly installed on the outer casing of the device.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model, through the setting of the cleaning device, drives the rotating disk to rotate via the rotating shaft, and the rotating disk drives the inclined plate to rotate. The rotation of the inclined plate causes the water in the cleaning tank to form a vortex, causing the stevia leaves in the cleaning tank to move. When the surface of the stevia leaves comes into contact with the silicone strip on the cleaning plate, the silicone strip can scrape off the debris on the stevia leaves, avoiding the situation of crushing the stevia leaves when rubbing and cleaning them.

[0015] 2. This utility model, through the setting of a drainage device, uses the rotation of the second rotating rod to drive the reciprocating screw to rotate within the limiting plate, causing the limiting plate to reciprocate within the equipment casing. When the first and second drainage channels on the limiting plate overlap, the water in the cleaning tank will flow out through the second drainage channel, the first drainage channel, and the filter screen. The outflowing water can be recycled through an external storage box, resulting in a lower impurity content in the water of the cleaning tank, allowing the stevia leaves to be cleaned more thoroughly and preventing secondary adhesion of impurities to the stevia leaves due to excessive impurities in the water. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall structure inside the outer shell of the device of this utility model;

[0019] Figure 3This is a schematic diagram of the overall structure inside the outer shell of the device of this utility model;

[0020] Figure 4 This is a schematic diagram of the overall structure of the rotating disk of this utility model.

[0021] In the diagram: 1. Equipment casing; 11. Cleaning tank; 2. Cleaning device; 21. Rotating shaft; 22. Rotating disc; 23. Inclined plate; 24. Cleaning plate; 25. Silicone strip; 3. Drive device; 31. Motor; 32. Rotating rod No. 1; 33. Worm gear; 34. Rotating rod No. 2; 35. Worm wheel; 36. Helical gear; 4. Drainage device; 41. Limiting plate; 42. Fixing rod; 43. Reciprocating screw; 44. Drainage tank No. 1; 45. Drainage tank No. 2; 46. Slot; 47. Insert plate; 48. Filter screen; 5. Support frame. Detailed Implementation

[0022] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0023] Example 1

[0024] Reference Figures 1-4 This embodiment proposes a device for cleaning and drying stevia leaves. By setting up the cleaning device 2, the problem of crushing stevia leaves during rubbing and cleaning is solved. The device includes a device shell 1, on which two symmetrical support frames 5 are fixedly installed. A cleaning tank 11 is opened on the device shell 1. A cleaning device 2 is installed on the device shell 1 to prevent stevia leaves from being crushed. The cleaning device 2 can remove debris from the stevia leaves.

[0025] The cleaning device 2 includes four sets of rotating shafts 21 rotatably mounted on the equipment housing 1. Each set of rotating shafts 21 is fixedly mounted with a rotating disk 22. Four sets of inclined plates 23 are evenly mounted on the rotating disks 22. Each set of inclined plates 23 is fixedly mounted with a cleaning plate 24. Multiple sets of silicone strips 25 are evenly mounted on the cleaning plate 24. An external water source flows into the cleaning tank 11 through a water pipe. The rotation of the rotating shafts 21 drives the rotating disks 22 to rotate, and the rotation of the rotating disks 22 drives the inclined plates 23 to rotate. The rotation of the inclined plates 23 causes the water in the cleaning tank 11 to form a vortex, causing the stevia leaves in the cleaning tank 11 to move. When the surface of the stevia leaves comes into contact with the silicone strips 25 on the cleaning plate 24, the silicone strips 25 can scrape off the debris on the stevia leaves, avoiding the situation of crushing the stevia leaves when rubbing and cleaning them.

[0026] A drive unit 3 is installed inside the equipment housing 1. The drive unit 3 includes a motor 31 fixedly installed on the equipment housing 1. A first rotating rod 32 rotatably connected to the equipment housing 1 is fixedly installed at the output end of the motor 31. Two sets of worm gears 33 are fixedly installed on the first rotating rod 32. Two sets of second rotating rods 34 are symmetrically installed inside the equipment housing 1. Each set of second rotating rods 34 is fixedly installed with a worm wheel 35 that meshes with the worm gear 33. Helical teeth 36 that mesh with each other are fixedly installed on the second rotating rods 34 and the rotating shaft 21. When the motor 31 is started, the first rotating rod 32 at the output end drives the worm gear 33 to rotate. The worm gear 33 drives the second rotating rod 34 connected to the worm wheel 35 to rotate. Under the action of the helical teeth 36, the second rotating rod 34 rotates and drives the rotating shaft 21 to rotate.

[0027] Example 2

[0028] Based on Example 1, the technical solution proposed in Example 1 is used to solve the problem of crushing stevia leaves during rubbing and washing. Since the debris cleaned from the stevia leaves may re-adhere to the stevia leaves without changing the water, it will cause secondary pollution.

[0029] Reference Figures 1-4 The equipment housing 1 is equipped with a drainage device 4, which includes a limiting plate 41 slidably installed inside the equipment housing 1. Two sets of symmetrical fixing rods 42 are fixedly installed on the equipment housing 1, slidably connected to the limiting plate 41, making the movement of the limiting plate 41 more stable. A reciprocating screw 43, threadedly connected to the limiting plate 41, is fixedly installed on the second rotating rod 34. Four sets of first-level drainage channels 44 are provided on the limiting plate 41. Four sets of second-level drainage channels 45, corresponding to the positions of the first-level drainage channels 44, are provided on the equipment housing 1. A slot 46 is provided on the equipment housing 1, and an insert plate 47 is slidably installed on the slot 46. Four sets of filter screens 48 are installed on the insert plate 47, which can filter the wastewater in the cleaning tank 11. For filtration, insert plate 47 is inserted into the equipment housing 1 through slot 46 to facilitate replacement of filter screen 48. Rotation of the second rotating rod 34 drives the reciprocating screw 43 to rotate within the limiting plate 41, causing the limiting plate 41 to reciprocate within the equipment housing 1. When the first drainage trough 44 and the second drainage trough 45 on the limiting plate 41 overlap, the water in the cleaning tank 11 will flow out through the second drainage trough 45, the first drainage trough 44, and the filter screen 48. The outflowing water can be recycled through an external storage box, resulting in a lower impurity content in the water of the cleaning tank 11. This allows the stevia leaves to be cleaned more thoroughly, preventing secondary adhesion of impurities to the stevia leaves due to excessive impurities in the water.

[0030] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for cleaning and drying of stevia leaves, comprising a device housing (1), characterized in that, The cleaning groove (11) is arranged on the equipment shell (1), and the cleaning device (2) for preventing the sweetleaf leaves from being crushed is installed on the equipment shell (1). The cleaning device (2) comprises four groups of rotating shafts (21) rotatably arranged on the equipment shell (1), each group of rotating shafts (21) is fixedly provided with a rotating disc (22), the rotating disc (22) is uniformly provided with four groups of inclined plates (23), each group of inclined plates (23) is fixedly provided with a cleaning plate (24), and the cleaning plate (24) is uniformly provided with a plurality of groups of silica gel strips (25).

2. The device for cleaning and drying leaves of Stevia rebaudiana according to claim 1, characterized in that, The driving device (3) is installed in the equipment shell (1), the driving device (3) comprises a motor (31) fixedly arranged on the equipment shell (1), the output end of the motor (31) is fixedly provided with a first rotating rod (32) rotatably connected with the equipment shell (1), the first rotating rod (32) is fixedly provided with two groups of worms (33), the equipment shell (1) is rotatably provided with two groups of second rotating rods (34) symmetrically, each group of second rotating rods (34) is fixedly provided with a worm wheel (35) engaged with the worm (33), and the second rotating rod (34) and the rotating shaft (21) are fixedly provided with inclined teeth (36) engaged with each other.

3. The device for cleaning and drying leaves of Stevia rebaudiana according to claim 2, characterized in that, The drainage device (4) is installed on the equipment shell (1), the drainage device (4) comprises a limiting plate (41) slidably arranged in the equipment shell (1), the equipment shell (1) is fixedly provided with two groups of fixed rods (42) symmetrically and slidably connected with the limiting plate (41), and the second rotating rod (34) is fixedly provided with a reciprocating screw rod (43) threadedly connected with the limiting plate (41).

4. The device for cleaning and drying leaves of Stevia rebaudiana according to claim 3, characterized in that, The limiting plate (41) is provided with four groups of first drainage grooves (44), and the equipment shell (1) is provided with four groups of second drainage grooves (45) corresponding to the positions of the first drainage grooves (44).

5. A device for cleaning and drying leaves of Stevia rebaudiana according to claim 4, characterized in that, The equipment shell (1) is provided with a slot (46), the slot (46) is slidably provided with a plug plate (47), and the plug plate (47) is provided with four groups of filter screens (48).

6. The device for cleaning and drying leaves of Stevia rebaudiana according to claim 1, characterized in that, The equipment shell (1) is fixedly provided with two groups of supporting frames (5) symmetrically.

Citation Information

Patent Citations

  • Cleaning and airing device for stevia rebaudiana leaves

    CN216988904U