Tea electrostatic impurity removal processing device with multi-stage dispersion mechanism and processing method

Abstract

The invention discloses a tea electrostatic impurity removal processing device with a multi-stage dispersion mechanism and a processing method.The tea electrostatic impurity removal processing device comprises a pair of impurity removal cylinders which are fixedly installed up and down, the middle butt joint positions of the impurity removal cylinders communicate with each other, electrostatic adsorption rollers are rotationally installed in the impurity removal cylinders, and heterocyclic ring removal channels are reserved between the electrostatic adsorption rollers and the impurity removal cylinders; according to the tea leaf impurity removal device, a pair of impurity removal barrels distributed up and down is arranged, a heterocyclic ring removal channel is formed between an electrostatic adsorption roller and the impurity removal barrels, tea leaves move along an S-shaped path from top to bottom in the heterocyclic ring removal channel, material guide isolation nets are additionally arranged in the heterocyclic ring removal channel in the up-down direction, and the tea leaves make contact with the material guide isolation nets in the falling process in a colliding mode, so that the tea leaves are continuously dispersed and changed in direction; and impurities in the tea leaves are adsorbed to the electrostatic adsorption roller through the material guide separation net and fall down by means of gravity, external power contact pushing is not needed, the tea leaves cannot be damaged, and the problem that the tea leaves are difficult to disperse due to the fact that a horizontal conveying belt is traditionally used for conveying the tea leaves is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of electrostatic impurity removal of tea leaves, and more specifically, to a tea leaf electrostatic impurity removal processing device and a processing method with a multi-stage dispersion mechanism. Background Art

[0002] In the industrial production process, air separators, screening machines and other equipment are used to remove impurities such as straw, woven bag fibers, and pebbles mixed in the tea. The roughly processed tea leaves are then transported to the electrostatic impurity removal process, which is used to remove impurities in the tea leaves, such as hair, dust and other small objects.

[0003] After searching, the patent number is CN112403682A, which discloses "Electrostatic dust removal and dedusting device for white tea", which uses a dust suction device to remove tea dust from the raw materials entering the feeding device. After the tea dust is sucked away by the dust suction device, the raw materials enter the impurity removal device again, and other impurities in the raw materials are adsorbed by the principle of electrostatic adsorption to separate and collect the tea dust, effectively avoiding the situation where a large amount of tea dust accumulates in the equipment and damages the equipment;

[0004] However, the tea leaves fall onto the feed plate through the feed hopper, and the rotation of the fan generates suction, which sucks the tea dust in the tea leaves into the wind tube. The tea leaves after the tea dust is removed are pushed off the feed plate by the pushing rod. This process not only requires intermittent feeding into the feed hopper, but cannot achieve continuous feeding, and the tea leaves fall directly onto the feed plate through the feed hopper for dust removal. The tea leaves are not dispersed, and the tea leaves accumulated on the feed plate cannot have a good dust removal effect. At the same time, after dust removal, the tea leaves need to be pushed down by the pushing rod for subsequent electrostatic treatment. During the pushing process, the tea leaves are easily damaged. In addition, during the electrostatic impurity removal process, the tea leaves are transported by a horizontal conveyor belt, and the tea leaves remain relatively static on the horizontal conveyor belt. The tea leaves always keep the same side facing the electrostatic roller, making it difficult to maximize the removal of dust impurities mixed in the tea leaves, and there are certain processing defects.

[0005] To this end, we propose a tea electrostatic impurity removal processing device and method with a multi-level dispersion mechanism to address existing practical problems. Summary of the invention

[0006] The purpose of the present invention is to solve the problem that tea impurity removal equipment in the prior art does not perform multi-stage dispersion of tea leaves, resulting in limited impurity removal effect. Compared with the prior art, a tea electrostatic impurity removal processing device and a processing method with a multi-stage dispersion mechanism are provided.

[0007] The object of the present invention can be achieved by the following technical scheme: a tea electrostatic impurity removal processing device with a multi-stage dispersion mechanism comprises a pair of impurity removal cylinders fixedly installed up and down and connected to each other at the middle joint, a feed port is provided at the top of the impurity removal cylinder located at the top, a discharge port is provided at the bottom of the impurity removal cylinder located at the bottom, a feed hopper connected to the feed port is fixedly installed at the top of the impurity removal cylinder located at the top, an electrostatic adsorption roller is rotatably installed inside the pair of impurity removal cylinders, an impurity removal loop is reserved between the electrostatic adsorption roller and the impurity removal cylinder, and the upper and lower impurity removal loops are connected to each other through a guide plate installed at the connecting opening of the pair of impurity removal cylinders;

[0008] The inner walls of the upper and lower debris removing cylinders are fixedly installed with material guide isolation nets, whose top ends are respectively connected to the vibration plate and the bottom ends of the material guide plate and are distributed on the left and right. The inner end walls of the upper and lower pairs of debris removing cylinders are embedded with negative pressure adsorption boxes that are arranged opposite to the lower end portions of the material guide isolation nets. The upper end wall of the debris removing cylinders is fixedly installed with a felt sleeve that is located above the negative pressure adsorption box and is movably fitted with the inner wall of the electrostatic adsorption roller.

[0009] Furthermore, a vibration box is fixedly installed on the top of the impurity removal cylinder, and a vibration plate extending to the feed port is installed on the vibration box. The vibration plate extends obliquely downward to one side of the top of the impurity removal channel, and is used to disperse the tea leaves guided downward from the feed hopper into the impurity removal channel of the impurity removal cylinder and fall along one side of the top of the impurity removal channel.

[0010] Furthermore, the downward inclination direction of the guide plate is opposite to the downward inclination direction of the vibration plate. Both the vibration plate and the guide plate guide the movement of the tea leaves, so that the tea leaves can move along an S-shaped path from top to bottom in the impurity removal loop, thereby extending the tea leaves' impurity removal route from top to bottom.

[0011] Furthermore, the material guiding isolation net is in the form of an arc-shaped ring structure coaxially arranged with the electrostatic adsorption roller, the material guiding isolation net has a thickness of 1-2 mm, and a plurality of hollow mesh holes are provided on the material guiding isolation net.

[0012] Furthermore, an adsorption space is reserved between the material guide isolation net and the outer wall of the electrostatic adsorption roller, and the width of the adsorption space is reserved for 2-3mm. The material guide isolation net is arranged on the periphery of the electrostatic adsorption roller, and the distance between the two is small. The tea leaves directly collide and contact with the material guide isolation net during the falling process, which not only promotes the efficient dispersion of the tea leaves, but also makes the fine impurities in the tea leaves be adsorbed onto the electrostatic adsorption roller through the hollow mesh holes on the material guide isolation net after collision, but also effectively prevents the falling tea leaves from directly contacting the adsorption surface of the electrostatic adsorption roller, thereby preventing the dust and impurities adsorbed on the electrostatic adsorption roller from being detached during the collision of the tea leaves with the adsorption surface of the electrostatic adsorption roller.

[0013] Furthermore, a scraper is fixed on the inner wall of the impurity removal cylinder and is located between the negative pressure adsorption box and the felt sleeve and is movably fitted with the outer wall of the electrostatic adsorption roller.

[0014] Furthermore, an internal suction component is installed on the inner side of the electrostatic adsorption roller, and one end is fixedly installed on the end wall of the impurity removal cylinder. A plurality of adsorption holes arranged in an array are opened on the end wall of the electrostatic adsorption roller. The adsorption holes are disc-shaped with a narrow inside and a wide outside, and a developed pore structure is provided, which helps to increase the electrostatic adsorption area and improve the adsorption efficiency.

[0015] Furthermore, the internal suction component includes an internal adsorption box fixedly installed on the end of the impurity removal cylinder and extending to the inner side of the electrostatic adsorption roller, the inner side of the internal adsorption box is provided with an arc-shaped suction cavity, and a plurality of groups of annularly distributed adsorption nozzles are embedded and installed on the inner wall of the arc-shaped suction cavity, the outer ends of the plurality of groups of adsorption nozzles are connected with shunt pipes, and the ends of the plurality of shunt pipes are commonly connected to a negative pressure main pipe extending to the outside of the impurity removal cylinder. In conjunction with the built-in internal adsorption box, the adsorbed dust can be sucked in through the adsorption holes under the action of negative pressure wind force, thereby ensuring that the adsorbed dust can be smoothly extracted through the internal adsorption box, avoiding accumulation on the electrostatic adsorption roller to a certain extent, and further improving the impurity removal effect.

[0016] The present invention also provides a tea electrostatic impurity removal processing method with a multi-stage dispersion mechanism, comprising the following steps:

[0017] Step 1: First, start the vibration plate, a pair of upper and lower electrostatic adsorption rollers, and a negative pressure adsorption box, and put the roughly processed tea leaves into the feed hopper. The tea leaves are evenly dispersed under the vibration of the vibration plate and fall from one side of the top of the impurity removal ring channel. They move along an S-shaped path from top to bottom in the impurity removal ring channel and are finally discharged through the discharge port.

[0018] Step 2: During the falling process, the tea leaves collide with the material guide isolation net, and are constantly dispersed and changed in position, so that the tiny impurities in the tea leaves are adsorbed onto the electrostatic adsorption roller through the hollow mesh holes on the material guide isolation net after collision. The negative pressure suction of the negative pressure adsorption box is used to remove the dust and tiny impurities on the electrostatic adsorption roller during the rotation process, and the electrostatic adsorption roller rotates to the felt cover and rubs against it, and is re-charged with static electricity.

[0019] Step three: In order to improve the electrostatic impurity removal effect, a number of adsorption holes are opened on the end face of the electrostatic adsorption roller, and in conjunction with the internal suction component, the adsorbed dust can be sucked in through the adsorption holes under the action of negative pressure wind force, ensuring that the adsorbed dust can be smoothly extracted through the internal adsorption box, avoiding accumulation on the electrostatic adsorption roller to a certain extent, and further improving the impurity removal effect.

[0020] Compared with the prior art, the advantages of the present invention are:

[0021] (1) The present invention is to set up a pair of impurity removal cylinders distributed up and down, and an electrostatic adsorption roller is rotatably installed in the impurity removal cylinder. An impurity removal loop is formed between the electrostatic adsorption roller and the impurity removal cylinder. The tea leaves move along an S-shaped path from top to bottom in the impurity removal loop. Material guide isolation nets are added in the upper and lower directions of the impurity removal loop. The tea leaves collide with the material guide isolation nets during the falling process, which not only promotes the tea leaves to be continuously dispersed and change their orientation, but also makes the impurities in the tea leaves be adsorbed by the material guide isolation nets to the electrostatic adsorption rollers and fall by gravity without the need for external power contact and promotion, and will not cause damage to the tea leaves. It also avoids the problem of the traditional use of horizontal conveyor belts to transport tea leaves and making it difficult to disperse the tea leaves, thereby solving the problem of the tea leaves always keeping the same side facing the electrostatic adsorption roller and making it difficult to remove impurities in the tea leaves as much as possible.

[0022] (2) A material guide isolation net is added to the impurity removal loop and is located outside the electrostatic adsorption roller. Compared with flat contact, tea leaves falling on the material guide isolation net with a number of hollow mesh holes are easier to flip and disperse, and can also effectively prevent the falling tea leaves from directly contacting the adsorption surface of the electrostatic adsorption roller, thereby preventing the dust and impurities adsorbed on the electrostatic adsorption roller from being detached during the collision of the tea leaves with the adsorption surface of the electrostatic adsorption roller.

[0023] (3) The present invention opens a plurality of adsorption holes on the end face of the electrostatic adsorption roller and sets a developed pore structure, which helps to increase the electrostatic adsorption area and improve the adsorption efficiency. In conjunction with the internal suction component, under the action of negative pressure wind force, the adsorbed dust can be sucked in through the adsorption holes, ensuring that the adsorbed dust can be smoothly extracted through the internal adsorption box, avoiding accumulation on the electrostatic adsorption roller to a certain extent, and further improving the impurity removal effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the external structure of the present invention;

[0025] Figure 2 A schematic diagram of the external structure of the present invention from another perspective;

[0026] Figure 3 is an end cross-sectional view of the present invention;

[0027] Figure 4 It is an internal cross-sectional view of a pair of positioning tubes of the present invention;

[0028] Figure 5 It is a structural schematic diagram of the junction of the electrostatic adsorption roller, the material guide isolation net and the felt sleeve of the present invention;

[0029] Figure 6 It is a structural schematic diagram of the material guide isolation net of the present invention;

[0030] Figure 7 It is a cross-sectional schematic diagram of the present invention when working;

[0031] Figure 8 is a cross-sectional view of the entire end portion of the device in Example 2;

[0032] Fig. 9 It is a schematic structural diagram of the junction between the electrostatic adsorption roller with adsorption holes and the internal suction component in Example 2;

[0033] Fig.10 A schematic structural diagram of the junction of the electrostatic adsorption roller with adsorption holes and the internal suction component in Example 2 from another perspective;

[0034] Fig.11 is a schematic structural diagram of the internal suction assembly in Example 2;

[0035] Fig.12 This is a schematic diagram of the external structure in Example 2.

[0036] Description of the numbers in the figure:

[0037] 1. De-impurity cylinder; 101. Feed inlet; 102. Discharge outlet; 2. Feed hopper; 3. Vibrating plate; 4. Electrostatic adsorption roller; 401. Adsorption hole; 5. Material guide isolation net; 6. Negative pressure adsorption box; 7. Scraper; 8. Felt sleeve; 9. Material guide plate; 10. Internal adsorption box; 11. Adsorption nozzle; 12. Diverter pipe; 13. Negative pressure main pipe. DETAILED DESCRIPTION

[0038] The following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all the embodiments. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0039] Example 1: The present invention discloses a tea electrostatic impurity removal processing device with a multi-stage dispersion mechanism, please refer to Figure 1-Figure 4 , including a pair of impurity removal cylinders 1 fixedly installed up and down and connected to each other at the middle joint, a feed port 101 is provided at the top of the impurity removal cylinder 1 located at the top, a discharge port 102 is provided at the bottom of the impurity removal cylinder 1 located at the bottom, a feed hopper 2 connected to the feed port 101 is fixedly installed at the top of the impurity removal cylinder 1 located at the top, an electrostatic adsorption roller 4 is rotatably installed inside the pair of impurity removal cylinders 1, an impurity removal loop is reserved between the electrostatic adsorption roller 4 and the impurity removal cylinder 1, and the upper and lower impurity removal loops are connected to each other through a guide plate 9 installed at the connecting opening of the pair of impurity removal cylinders 1;

[0040] The guide plate 9 is arranged in a downwardly inclined direction opposite to the downwardly inclined direction of the vibration plate 3. Both the vibration plate 3 and the guide plate 9 guide the movement of the tea leaves, so that the tea leaves can move along an S-shaped path from top to bottom in the impurity removal loop, extend the impurity removal route of the tea leaves from top to bottom, and utilize the rotating electrostatic adsorption roller 4 to electrostatically adsorb fine impurities in the falling tea leaves.

[0041] See also Figure 3-Figure 6 The inner walls of the upper and lower impurity removal cylinders 1 are fixedly installed with material guide isolation nets 5, the tops of which are respectively connected to the bottoms of the vibration plate 3 and the material guide plate 9 and are distributed on the left and right. The material guide isolation nets 5 are in an arc-shaped ring structure coaxially arranged with the electrostatic adsorption roller 4. The thickness of the material guide isolation nets 5 is 1-2mm, and a plurality of hollow mesh holes are opened on the material guide isolation nets 5;

[0042] An adsorption space is reserved between the material guide isolation net 5 and the outer wall of the electrostatic adsorption roller 4. The width of the adsorption space is reserved for 2-3 mm. The thickness of the material guide isolation net 5 and the width of the adsorption space can be set according to actual needs. By adding the material guide isolation net 5 between the electrostatic adsorption roller 4 and the impurity removal ring, the material guide isolation net 5 is arranged on the periphery of the electrostatic adsorption roller 4, and the distance between the two is small.

[0043] See also Figure 7 The tea leaves directly collide with the material guiding isolation net 5 during the falling process. The material guiding isolation net 5 is set to be an annular thin sheet with a plurality of hollow mesh holes. The material guiding isolation net 5 has a small thickness and will not cause the tea leaves to be stuck in the hollow mesh holes during the falling process. Under the premise of not affecting the downward discharge of the tea leaves, it not only promotes the efficient dispersion of the tea leaves, but also makes the fine impurities in the tea leaves be adsorbed onto the electrostatic adsorption roller 4 through the hollow mesh holes on the material guiding isolation net 5 after collision, but also effectively prevents the falling tea leaves from directly contacting the adsorption surface of the electrostatic adsorption roller 4, thereby preventing some dust impurities originally adsorbed on the electrostatic adsorption roller 4 from detaching during the collision of the tea leaves with the adsorption surface of the electrostatic adsorption roller 4.

[0044] See also Figure 4 and Figure 7 The inner end walls of the upper and lower pairs of impurity removal cylinders 1 are both embedded with negative pressure adsorption boxes 6 arranged opposite to the lower end of the material guide isolation net 5, and the negative pressure adsorption boxes 6 are connected to the impurity removal loop. The upper end wall of the impurity removal cylinder 1 is fixed with a felt sleeve 8 located above the negative pressure adsorption box 6 and movably fitted with the inner wall of the electrostatic adsorption roller 4. The inner wall of the impurity removal cylinder 1 is also fixed with a scraper 7 located between the negative pressure adsorption box 6 and the felt sleeve 8 and movably fitted with the outer wall of the electrostatic adsorption roller 4;

[0045] The electrostatic adsorption roller 4 rotates in a circle in the same direction as the falling direction of the tea leaves. When the electrostatic adsorption roller 4 with adsorbed impurities rotates to the negative pressure adsorption box 6, the negative pressure wind force of the negative pressure adsorption box 6 is used to suck the impurities attached to the electrostatic adsorption roller 4 outwards. The electrostatic adsorption roller 4 is in friction contact with the scraper 7 during rotation. The scraper 7 is used to scrape the impurities that have not been completely removed for a second time and suck them outwards by the negative pressure adsorption box 6. The dust removal effect is improved by a combination of negative pressure suction and scraper 7. Traditionally, only scraping method is used to remove impurities adsorbed on the electrostatic adsorption roller. Since the fine impurities are light in weight, the scraped impurities such as fine dust or hair are easy to float in the air and are difficult to fall into the collection box quickly, thus avoiding the disadvantages of traditional single dust removal.

[0046] The electrostatic adsorption roller 4 rotates to the felt sleeve 8 and rubs against it, so that the electrostatic adsorption roller 4 is charged with static electricity again, and this cycle is repeated, so that the electrostatic adsorption roller 4 can absorb dust and impurities from the falling tea leaves in the circumferential direction and charge them with static electricity again.

[0047] Embodiment 2: Based on Embodiment 1, this embodiment improves the end surface structure of the electrostatic adsorption roller 4, and configures an inner suction component corresponding to the position of the guide isolation net 5 on the inner side of the electrostatic adsorption roller 4 to promote the removal of impurities from tea leaves, specifically:

[0048] See also Figure 8-Figure 12 The inner side of the electrostatic adsorption roller 4 is also provided with an inner suction component whose end is fixedly mounted to the end wall of the impurity removal cylinder 1, and the end wall of the electrostatic adsorption roller 4 is provided with a plurality of adsorption holes 401 arranged in an array, and the adsorption holes 401 are in a disc-shaped structure that is narrow inside and wide outside. The electrostatic adsorption roller 4 is designed to be a hollow structure with a plurality of adsorption holes 401, and a developed pore structure is provided, which helps to increase the electrostatic adsorption area and improve the adsorption efficiency;

[0049] After the electrostatic adsorption roller 4 is provided with an inwardly concave adsorption hole 401, the thickness of the felt sleeve 8 needs to be increased, and the interior is set to be flexible and buffer-resistant, and arc-shaped chamfered corner structures are set at both ends of the felt sleeve 8, which is conducive to the electrostatic adsorption roller 4 and the felt sleeve 8 being able to contact the concave adsorption hole 401 well when the electrostatic adsorption roller 4 and the felt sleeve 8 are in friction contact, so that the entire outer end surface of the electrostatic adsorption roller 4 is charged;

[0050] The internal suction assembly includes an internal adsorption box 10 fixedly installed at the end of the impurity removal cylinder 1 and extending to the inner side of the electrostatic adsorption roller 4. An arc-shaped suction cavity is opened inside the internal adsorption box 10. A plurality of groups of annularly distributed adsorption nozzles 11 are embedded and installed on the inner wall of the arc-shaped suction cavity. The outer ends of the plurality of adsorption nozzles 11 are connected to shunt pipes 12. The ends of the plurality of shunt pipes 12 are commonly connected to a negative pressure main pipe 13 extending to the outside of the impurity removal cylinder 1. With the internally installed internal adsorption box 10, under the action of negative pressure wind:

[0051] On the one hand, dust impurities mixed in the tea leaves are more easily adsorbed onto the electrostatic adsorption roller 4, and on the other hand, the adsorbed dust impurities can be directly sucked in through the adsorption holes 401, ensuring that the adsorbed dust can be smoothly extracted through the inner adsorption box 10, avoiding excessive impurities from accumulating on the electrostatic adsorption roller 4 to a certain extent, and further improving the impurity removal effect.

[0052] In combination with Example 1 and Example 2, the present invention further proposes a tea electrostatic impurity removal processing method with a multi-stage dispersion mechanism, comprising the following steps:

[0053] Step 1: First, start the vibration plate 3, the upper and lower pairs of electrostatic adsorption rollers 4, and the negative pressure adsorption box 6, and put the roughly processed tea leaves into the feed hopper 2. The tea leaves are evenly dispersed under the vibration of the vibration plate 3 and fall from one side of the top of the impurity removal loop. They move along an S-shaped path from top to bottom in the impurity removal loop and are finally discharged through the discharge port 102.

[0054] Step 2: The tea leaves collide with the guide isolation net 5 during the falling process, and are constantly dispersed and changed in orientation, so that the tiny impurities in the tea leaves are adsorbed onto the electrostatic adsorption roller 4 through the hollow mesh holes on the guide isolation net 5 after collision. The dust and tiny impurities on the electrostatic adsorption roller 4 during the rotation are removed by the negative pressure suction of the negative pressure adsorption box 6, and the electrostatic adsorption roller 4 rotates to the felt sleeve 8 and rubs against it, and is re-charged with static electricity.

[0055] Step three: In order to improve the electrostatic impurity removal effect, a number of adsorption holes 401 are opened on the end face of the electrostatic adsorption roller 4, and in conjunction with the internal suction component, under the action of negative pressure wind force, the adsorbed dust can be sucked in through the adsorption holes 401, ensuring that the adsorbed dust can be smoothly extracted through the internal adsorption box 10, avoiding accumulation on the electrostatic adsorption roller 4 to a certain extent, and further improving the impurity removal effect.

[0056] The above are only preferred specific implementation modes of the present invention; however, the protection scope of the present invention is not limited thereto; any technician familiar with the technical field within the technical scope disclosed by the present invention; any equivalent replacement or change based on the technical solution and improved concept of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A tea electrostatic impurity removal processing device with a multi-stage dispersion mechanism, comprising a pair of impurity removal cylinders (1) fixedly installed in the upper and lower parts and connected to each other at the middle joint, wherein the top of the impurity removal cylinder (1) is provided with a feed inlet (101), and the bottom of the impurity removal cylinder (1) is provided with a discharge outlet (102), characterized in that: A feed hopper (2) connected to the feed port (101) is fixedly installed at the top of the impurity removal cylinder (1) located above, and an electrostatic adsorption roller (4) is rotatably installed inside the pair of impurity removal cylinders (1). An impurity removal loop is reserved between the electrostatic adsorption roller (4) and the impurity removal cylinder (1), and the upper and lower impurity removal loops are connected to each other through a guide plate (9) installed at the connecting port of the pair of impurity removal cylinders (1); The inner walls of the upper and lower impurity removing cylinders (1) are fixedly mounted with material guide isolation nets (5) whose top ends are respectively connected to the vibration plate (3) and the bottom ends of the material guide plate (9) and are distributed on the left and right. The inner end walls of the upper and lower pairs of impurity removing cylinders (1) are embedded with negative pressure adsorption boxes (6) arranged opposite to the lower end portions of the material guide isolation nets (5). The upper end wall of the impurity removing cylinder (1) is fixedly mounted with a felt sleeve (8) located above the negative pressure adsorption box (6) and movably fitted with the inner wall of the electrostatic adsorption roller (4).

2. The tea electrostatic impurity removal processing device with a multi-stage dispersion mechanism according to claim 1 is characterized in that: A vibration box is fixedly mounted on the top of the impurity removal cylinder (1) located above, and a vibration plate (3) extending to the feed inlet (101) is mounted on the vibration box. The vibration plate (3) extends obliquely downward to one side of the top of the impurity removal loop.

3. The tea electrostatic impurity removal processing device with a multi-stage dispersion mechanism according to claim 2 is characterized in that: The downward tilting direction of the material guide plate (9) is arranged opposite to the downward tilting direction of the vibration plate (3).

4. The tea electrostatic impurity removal processing device with a multi-stage dispersion mechanism according to claim 1 is characterized in that: The material guide isolation net (5) is in the form of an arc-shaped ring structure coaxially arranged with the electrostatic adsorption roller (4), and an adsorption space is reserved between the material guide isolation net (5) and the outer wall of the electrostatic adsorption roller (4).

5. The tea electrostatic impurity removal processing device with a multi-stage dispersion mechanism according to claim 1 is characterized in that: A scraper (7) is also fixed on the inner wall of the impurity removal cylinder (1) and is located between the negative pressure adsorption box (6) and the felt sleeve (8) and is movably fitted with the outer wall of the electrostatic adsorption roller (4).

6. The tea electrostatic impurity removal processing device with a multi-stage dispersion mechanism according to claim 1 is characterized in that: An inner suction component is also installed on the inner side of the electrostatic adsorption roller (4), with one end fixedly mounted to the end wall of the impurity removal cylinder (1), and a plurality of adsorption holes (401) arranged in an array are opened on the end wall of the electrostatic adsorption roller (4), and the adsorption holes (401) are in a disc-shaped structure that is narrow inside and wide outside.

7. The tea electrostatic impurity removal processing device with a multi-stage dispersion mechanism according to claim 6 is characterized in that: The internal suction assembly comprises an internal adsorption box (10) fixedly mounted on the end of the impurity removal cylinder (1) and extending to the inside of the electrostatic adsorption roller (4); a plurality of groups of annularly distributed adsorption nozzles (11) are embedded and mounted on the inner wall of the internal adsorption box (10); the outer ends of the plurality of groups of adsorption nozzles (11) are connected to shunt pipes (12); the ends of the plurality of shunt pipes (12) are commonly connected to a negative pressure main pipe (13) extending to the outside of the impurity removal cylinder (1).

8. A tea electrostatic impurity removal processing method with a multi-stage dispersion mechanism, using a tea electrostatic impurity removal processing device with a multi-stage dispersion mechanism as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: The roughly processed tea leaves are loaded into the feed hopper (2), and the tea leaves are evenly dispersed under the vibration of the vibration plate (3) and fall from one side of the top of the impurity removal ring channel, move along an S-shaped path from top to bottom in the impurity removal ring channel, and finally discharged through the discharge port (102); Step 2: The tea leaves collide with the guide isolation net (5) during the falling process, and are continuously dispersed and changed in orientation, so that fine impurities in the tea leaves are adsorbed by the guide isolation net (5) onto the electrostatic adsorption roller (4), and the impurities on the electrostatic adsorption roller (4) during the rotating process are removed by the negative pressure adsorption box (6), and the electrostatic adsorption roller (4) rotates to the felt cover (8) and rubs against it, and is charged with static electricity again; Step 3: In order to improve the electrostatic impurity removal effect, a plurality of adsorption holes (401) are opened on the end surface of the electrostatic adsorption roller (4), and an internal suction component is used. Under the action of negative pressure wind force, the adsorbed dust is sucked in through the adsorption holes (401), ensuring that the adsorbed dust can be smoothly extracted through the internal adsorption box (10), thereby avoiding excessive accumulation of impurities on the electrostatic adsorption roller (4).

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