An electrostatic impurity removal device for processing floral-scented white tea
Patent Information
- Application Number
- CN202522119156.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-30
- Publication Date
- 2026-09-01
- Estimated Expiration
- 2035-09-30
AI Technical Summary
然而，直接套用现有设备于白茶加工存在一些问题：一是白茶茶叶本身干燥质轻，强大的静电场可能将茶叶连同杂质一起吸附，造成二次污染或损坏茶叶；二是现有设备结构复杂，不易与白茶生产线匹配
[0013] This invention utilizes the principle of differential force exerted by an electrostatic field on light and heavy materials to efficiently remove light and minute impurities from white tea that are difficult to remove by wind separation or manual sorting. It has no adverse effects on the quality, aroma, or composition of the tea itself, preserving the superior quality of floral white tea. At the same time, the smoothing mechanism ensures that the tea leaves enter the electrostatic field with a uniform thickness, improving the uniformity and consistency of the impurity removal effect and avoiding the problem of incomplete local impurity removal. The scraping mechanism automates the cleaning of the electrode plates, allowing the equipment to run continuously for long periods without frequent shutdowns for manual cleaning.
Smart Images
Figure CN224700360U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tea processing machinery technology, specifically to an electrostatic impurity removal device for processing floral white tea. Background Technology
[0002] White tea, especially high-grade floral white tea, is prone to accumulating light impurities such as animal hair, human hair, and textile dust during processing, including withering and drying. These impurities significantly affect the purity and market quality of the tea, necessitating dust removal treatment.
[0003] Electrostatic purification is a highly efficient method widely used in industries such as grain and tobacco. However, directly applying existing equipment to white tea processing presents several problems: First, white tea leaves are dry and lightweight, and a strong electrostatic field may attract impurities along with the leaves, causing secondary contamination or damaging the tea. Second, existing equipment has a complex structure and is not easily compatible with white tea production lines. Therefore, there is an urgent need for a specialized piece of equipment designed specifically for the characteristics of white tea, with a simple structure and non-destructive purification capabilities. Utility Model Content
[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an electrostatic impurity removal device for processing floral white tea, so as to solve the problems mentioned in the background technology.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an electrostatic impurity removal device for processing floral white tea, including a conveyor, a high-voltage electrostatic generator and four side plates. A baffle is fixed between the front and rear side plates. A scraping mechanism is provided on the surface of one side baffle, and a smoothing mechanism is provided on the surface of the front side plate. A negative electrode plate is provided above the conveyor belt of the conveyor. Two guide plates are fixed on the surface of the side plates. A sliding groove is opened on the surface of the negative electrode plate to cooperate with the guide plates. The guide plates are slidably connected to the surface of the sliding groove. Four connecting blocks are fixed on the top of the negative electrode plate. Multiple equidistantly distributed pin holes are opened on the surface of the side plates. A pin rod slides through the surface of the connecting block and is located inside the pin hole.
[0006] Preferably, the scraping mechanism includes a collection box and an electric cylinder. The collection box is located below the negative electrode plate. A scraper is fixed to the top of the inner wall of the collection box. The top of the scraper is slidably connected to the bottom surface of the negative electrode plate. The electric cylinder is fixedly connected to the surface of the side plate.
[0007] Preferably, one end of the electric cylinder passes through the side plate and is fixed with a connecting shell. A T-shaped plate is slidably connected to the surface of the connecting shell. One end of the T-shaped plate is fixedly connected to the surface of the collection box. Two guide rods slide through the surface of the side plate. One end of each guide rod is fixedly connected to the surface of the connecting shell.
[0008] Preferably, the smoothing mechanism includes an extended square profile plate, which is fixedly connected to the surface of the side plate. A smoothing brush plate for uniformly distributing the height of the white tea is provided below the extended square profile plate, and a height adjustment structure is provided on the surface of the extended square profile plate.
[0009] Preferably, the height adjustment structure of the extended square profile plate includes a screw rod with a handle, the screw rod being threaded through the extended square profile plate, a connecting plate being rotatably connected to the bottom of the screw rod, two guide rods being fixed to the top of the connecting plate, the guide rods being slidably passed through the extended square profile plate, and the connecting plate being detachably connected to the smoothing brush plate.
[0010] Preferably, both the connecting plate and the smoothing brush plate have multiple threaded holes on their tops, and the connecting plate and the smoothing brush plate are detachably connected by bolts through the threaded holes.
[0011] Preferably, the pin has two locking pins that slide through its surface.
[0012] Compared with the prior art, the beneficial effects achieved by this utility model are:
[0013] This invention utilizes the principle of differential force exerted by an electrostatic field on light and heavy materials to efficiently remove light and minute impurities from white tea that are difficult to remove by wind separation or manual sorting. It has no adverse effects on the quality, aroma, or composition of the tea itself, preserving the superior quality of floral white tea. At the same time, the smoothing mechanism ensures that the tea leaves enter the electrostatic field with a uniform thickness, improving the uniformity and consistency of the impurity removal effect and avoiding the problem of incomplete local impurity removal. The scraping mechanism automates the cleaning of the electrode plates, allowing the equipment to run continuously for long periods without frequent shutdowns for manual cleaning. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0015] Figure 2 This is a three-dimensional structural schematic diagram of the present invention from another perspective;
[0016] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the diagram;
[0017] Figure 4 This is a schematic diagram of the scraping mechanism in this utility model;
[0018] Figure 5 This is a schematic diagram of the smoothing mechanism in this utility model.
[0019] The components include: 1. Conveyor; 2. Side plate; 3. Baffle; 4. Scraping mechanism; 401. Collection box; 402. Scraper; 403. Electric cylinder; 404. Connecting shell; 405. T-shaped plate; 406. Guide rod; 5. Smoothing mechanism; 501. Extended square profile plate; 502. Smoothing brush plate; 503. Handled lead screw; 504. Connecting plate; 505. Guide rod; 506. Threaded hole; 6. High voltage electrostatic generator; 7. Negative electrode plate; 8. Guide plate; 9. Connecting block; 10. Pin hole; 11. Pin rod; 12. Double locking pin. Detailed Implementation
[0020] The specific embodiments of this utility model will now be described in further detail with reference to the accompanying drawings.
[0021] Please see Figure 1-5 An electrostatic impurity removal device for processing floral white tea includes a conveyor 1, a high-voltage electrostatic generator 6, and four side plates 2. A baffle 3 is fixed between the front and rear side plates 2. A scraping mechanism 4 is provided on the surface of one side baffle 3, and a smoothing mechanism 5 is provided on the surface of the front side plate 2. A negative electrode plate 7 is provided above the conveyor belt of the conveyor 1. The negative electrode plate 7 is connected to the negative output terminal of the high-voltage electrostatic generator 6. The drive roller and transmission roller of the conveyor 1 are both made of metal and grounded. Two guide plates 8 are fixed on the surface of the side plates 2. A sliding groove is opened on the surface of the negative electrode plate 7 to cooperate with the guide plate 8. The guide plate 8 is slidably connected to the surface of the sliding groove. Four connecting blocks 9 are fixed on the top of the negative electrode plate 7. Multiple equidistantly distributed pin holes 10 are opened on the surface of the side plates 2. Pin rods 11 slide through the surface of the connecting blocks 9 and are located inside the pin holes 10.
[0022] Through the above technical solution, after the high-voltage electrostatic generator 6 is working, a high voltage is applied to the negative electrode plate 7 connected to its negative electrode, making it negatively charged. The grounded metal active roller and transmission roller make the surface of the conveyor belt of the conveyor 1 equivalent to the grounded positive electrode, thereby forming a strong electrostatic field between the negative electrode plate 7 and the conveyor belt. When the conveyor belt with white tea leaves passes through this electric field, the light dry impurities mixed in the tea leaves will be induced polarized and attracted by the strong electric field, thus being adsorbed onto the lower surface of the negative electrode plate 7. The side plate 2 and the baffle 3 form a semi-enclosed working cavity, which can effectively prevent external airflow from interfering with the electrostatic field and ensure operational safety. Through the sliding cooperation of the guide plate 8 and the chute, the negative electrode plate 7 can be initially guided to rise and fall. By inserting the pin 11 into the pin holes 10 at different heights, the height of the negative electrode plate 7 can be precisely fixed, thereby adjusting the electrostatic field strength to meet the impurity removal requirements of different batches of tea. By using the grounding of the conveyor belt roller as the positive electrode, the trouble of installing an additional positive electrode is eliminated, the structure is simplified, the manufacturing cost is reduced, and the uniformity of the electric field distribution is ensured.
[0023] The scraping mechanism 4 includes a collection box 401 and an electric cylinder 403. The collection box 401 is located below the negative electrode plate 7. A scraper 402 is fixed to the top of the inner wall of the collection box 401. The top of the scraper 402 is slidably connected to the bottom surface of the negative electrode plate 7. The electric cylinder 403 is fixedly connected to the surface of the side plate 2.
[0024] Through the above technical solution, after the equipment has been running for a period of time, impurities will accumulate on the lower surface of the negative electrode plate 7, affecting its electrostatic adsorption efficiency. At this time, the high-voltage electrostatic generator 6 can be turned off and the electric cylinder 403 can be started. The push rod of the electric cylinder 403 extends or retracts, driving the entire collection box 401 connected to it to move horizontally along the lower surface of the negative electrode plate 7. The scraper 402 fixed on the collection box 401 moves accordingly, and its top edge is close to the lower surface of the negative electrode plate 7, scraping off the impurities attached to it like a scraper. Due to gravity and the scraping action, the scraped impurities fall directly into the collection box 401 located directly below and are temporarily stored, thus completing the cleaning operation of the negative electrode plate 7, restoring its clean surface and ensuring continuous impurity removal capability.
[0025] One end of the electric cylinder 403 passes through the side plate 2 and is fixed to the connecting shell 404. A T-shaped plate 405 is slidably connected to the surface of the connecting shell 404. One end of the T-shaped plate 405 is fixedly connected to the surface of the collection box 401. Two guide rods 406 slide through the surface of the side plate 2. One end of the guide rods 406 is fixedly connected to the surface of the connecting shell 404.
[0026] Through the above technical solution, the electric cylinder 403 serves as the power source, and its push rod transmits linear thrust through the connecting shell 404. One end of the T-shaped plate 405 is fixed to the collection box 401, and the other end is slidably embedded in the connecting shell 404. This design allows for the effective transmission of thrust and enables the collection box 401 to be removed from the connecting shell 404, facilitating the cleaning of the collection box 401. The two guide rods 406 bear and balance the lateral force or torque generated during the scraping process, ensuring that the entire collection box 401 and scraper 402 move smoothly in a straight line.
[0027] The smoothing mechanism 5 includes an extended square profile plate 501, which is fixedly connected to the surface of the side plate 2. A smoothing brush plate 502 for uniformly distributing the height of the white tea is provided below the extended square profile plate 501. The surface of the extended square profile plate 501 is provided with a height adjustment structure.
[0028] With the above technical solution, when white tea leaves are conveyed from the front-end process to the conveyor belt of this equipment, their thickness may be uneven. As the tea leaves move forward with the conveyor belt and pass under the smoothing brush plate 502, the bristles of the brush will contact the surface of the tea leaves. For parts that are too thick, the bristles will apply a slight resistance and combing effect to flatten them or move the excess tea leaves. Finally, the tea leaves will present a thin layer with a roughly uniform thickness across the entire width of the conveyor belt before entering the electrostatic field area.
[0029] The height adjustment structure of the extended square profile plate 501 includes a screw rod 503 with a handle, which is threaded through the extended square profile plate 501. A connecting plate 504 is rotatably connected to the bottom of the screw rod 503. Two guide rods 505 are fixed to the top of the connecting plate 504. The guide rods 505 slide through the extended square profile plate 501. The connecting plate 504 is detachably connected to the smoothing brush plate 502.
[0030] With the above technical solution, the operator can adjust the height of the smoothing brush plate 502 by rotating the handle on the screw 503. The guide rod 505 slides through the extended square profile plate 501, constraining the connecting plate 504 to only make vertical linear movements, preventing it from rotating with the screw, and ensuring smooth and accurate lifting.
[0031] Both the connecting plate 504 and the smoothing brush plate 502 have multiple threaded holes 506 on their tops. The connecting plate 504 and the smoothing brush plate 502 are detachably connected by bolts through the threaded holes 506.
[0032] With the above technical solution, when it is necessary to install the smoothing brush plate 502, align it and place it under the connecting plate 504 so that the threaded holes 506 on both sides are aligned. Then, screw the bolts in from above the connecting plate 504 and finally screw them into the threaded holes 506 on the smoothing brush plate 502. The two parts are connected together by the tightening force of the bolts. When it is necessary to replace, clean or repair the smoothing brush plate 502, simply loosen and remove all the bolts to remove the brush plate. The operation is simple and quick.
[0033] The pin 11 has a double locking pin 12 that slides through its surface.
[0034] Through the above technical solution, after the height of the negative electrode plate 7 is initially fixed by inserting the connecting block 9 and the pin 11 into the pin hole 10, the double locking pin 12 is then inserted into the reserved through hole on the pin 11 to prevent the pin 11 from accidentally slipping out of the pin hole 10 due to vibration, accidental collision or other unexpected factors during equipment operation. It provides a second insurance for height locking and greatly enhances the reliability of the fixation.
[0035] Working Principle: First, based on the characteristics of the floral white tea to be processed, the negative electrode plate 7 is slid along the guide plate 8, and a suitable height pin hole 10 is selected. The pin rod 11 is inserted and locked with the double locking pin 12 to set the optimal distance between the negative electrode plate 7 and the conveyor belt. At the same time, an appropriate output voltage can be set by the high-voltage electrostatic generator 6 to establish an electrostatic field of suitable strength. The height of the smoothing brush plate 502 is adjusted to the predetermined value by rotating the screw 503 with the handle of the smoothing mechanism 5. After the preparation is completed, the conveyor 1 and the high-voltage electrostatic generator 6 are started. The white tea leaves containing impurities are evenly spread on the feed end of the conveyor belt of the conveyor 1 manually or through the previous equipment. The tea leaves pass under the smoothing mechanism 5 with the conveyor belt. The smoothing brush plate 502 combs and spreads the uneven tea layer into a uniform thin layer. Then, the uniform tea layer enters the electrostatic field area formed by the negative electrode plate 7 and the grounded conveyor belt. Lightweight, dry impurities such as hair, threads, and dust are rapidly polarized and strongly adsorbed onto the lower surface of the negative electrode plate 7, which carries a negative high voltage. Tea leaves, due to their moisture content and greater mass, are not subjected to sufficient electric field force to overcome their gravity and inertia, and thus continue to move forward with the conveyor belt. They are eventually output as clean tea leaves, thus separating the impurities from the tea leaves. As the equipment continues to operate, the amount of impurities adsorbed on the lower surface of the negative electrode plate 7 gradually increases, requiring periodic activation of the scraping mechanism 4: controlling the electric cylinder 403 to move the collection box 401 and the scraper 402 fixed thereon along the lower surface of the negative electrode plate 7. The scraper 402 scrapes the adsorbed impurities into the collection box 401 for temporary storage. After cleaning, the electric cylinder 403 resets, and the equipment continues to operate. This equipment, through the principle of electrostatic adsorption combined with pre-treatment smoothing and post-treatment scraping, achieves efficient and continuous impurity removal for floral-scented white tea. It has a simple and practical structure and significant effects.
[0036] Although specific 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 specific embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An electrostatic impurity removal device for processing floral-scented white tea, characterized in that: The device includes a conveyor (1), a high-voltage electrostatic generator (6), and four side plates (2). A baffle (3) is fixed between the front and rear side plates (2). A scraping mechanism (4) is provided on the surface of one side baffle (3). A smoothing mechanism (5) is provided on the surface of the front side plate (2). A negative electrode plate (7) is provided above the conveyor belt of the conveyor (1). Two guide plates (8) are fixed on the surface of the side plate (2). A groove is provided on the surface of the negative electrode plate (7) to cooperate with the guide plate (8). The guide plate (8) is slidably connected to the surface of the groove. Four connecting blocks (9) are fixed on the top of the negative electrode plate (7). Multiple pin holes (10) are provided on the surface of the side plate (2). A pin rod (11) slides through the surface of the connecting block (9). The pin rod (11) is located inside the pin hole (10).
2. The electrostatic purification device for processing floral-scented white tea according to claim 1, characterized in that: The scraping mechanism (4) includes a collection box (401) and an electric cylinder (403). The collection box (401) is located below the negative electrode plate (7). A scraper (402) is fixed to the top of the inner wall of the collection box (401). The top of the scraper (402) is slidably connected to the bottom surface of the negative electrode plate (7). The electric cylinder (403) is fixedly connected to the surface of the side plate (2).
3. The electrostatic purification device for processing floral-scented white tea according to claim 2, characterized in that: One end of the electric cylinder (403) passes through the side plate (2) and is fixed with a connecting shell (404). A T-shaped plate (405) is slidably connected to the surface of the connecting shell (404). One end of the T-shaped plate (405) is fixedly connected to the surface of the collection box (401). Two guide rods (406) slide through the surface of the side plate (2). One end of the guide rods (406) is fixedly connected to the surface of the connecting shell (404).
4. The electrostatic purification device for processing floral-scented white tea according to claim 1, characterized in that: The smoothing mechanism (5) includes an extended square profile plate (501), which is fixedly connected to the surface of the side plate (2). A smoothing brush plate (502) for uniformly distributing the height of white tea is provided below the extended square profile plate (501), and a height adjustment structure is provided on the surface of the extended square profile plate (501).
5. The electrostatic purification device for processing floral-scented white tea according to claim 4, characterized in that: The height adjustment structure of the extended square profile plate (501) includes a screw rod (503) with a handle, the screw rod (503) being threaded through the extended square profile plate (501), a connecting plate (504) being rotatably connected to the bottom of the screw rod (503), two guide rods (505) being fixed to the top of the connecting plate (504), the guide rods (505) being slidably passed through the extended square profile plate (501), and the connecting plate (504) being detachably connected to the smoothing brush plate (502).
6. The electrostatic purification device for processing floral-scented white tea according to claim 5, characterized in that: The top of both the connecting plate (504) and the smoothing brush plate (502) are provided with multiple threaded holes (506), and the connecting plate (504) and the smoothing brush plate (502) are detachably connected by bolts through the threaded holes (506).
7. The electrostatic purification device for processing floral-scented white tea according to claim 1, characterized in that: The pin (11) has a double locking pin (12) that slides through its surface.