Electrostatic slag removal equipment and slag removal method for scented tea processing

Abstract

The invention relates to the technical field of electrostatic separation and slag removal, and discloses an electrostatic slag removal device and slag removal method for flower tea processing. Under the rotation of the screening drum of the invention and the continuous turning action of each turning unit, the flower tea raw material is continuously rolled and turned inside the screening drum, and the impurities and debris in the flower tea raw material can be driven by the electric field under the action of the electric field, pass through the separation filter plate of the screening drum, enter the slag opening, fall into the slag discharge mechanism, and then be discharged, so that the impurities and debris in the flower tea raw material can be effectively separated and removed by the action of the electric field; then, when the slag discharge mechanism no longer discharges the impurities and debris in the flower tea raw material, the screening drum stops rotating, and the flower tea raw material is synchronously driven by each turning unit of the turning assembly, moves to one side of the discharge mechanism inside the screening drum, and finally discharged through the discharge mechanism, so that the flower tea after impurities are removed can be obtained, and the purity and appearance quality of the flower tea can be ensured.

Description

Technical Field

[0001] The invention relates to the technical field of electrostatic separation and slag removal, in particular to electrostatic slag removal equipment and a slag removal method for scented tea processing. Background Art

[0002] Electrostatic slag removal usually refers to a technology that uses the principle of static electricity to remove dust or slag during industrial production. Electrostatic slag removal uses a high-voltage electrostatic field to ionize the gas, so that the dust particles are charged and adsorbed onto the electrode to achieve the purpose of dust removal or slag removal. Specifically, when the dust-laden gas passes through a high-voltage electrostatic field, the dust particles combine with negative ions to carry negative charges, and then tend to discharge and deposit on the anode surface under the action of the electric field. The application of electrostatic slag removal technology in scented tea production is mainly reflected in improving the quality of scented tea and purifying scented tea products;

[0003] Scented tea is made from tea leaves (mainly green tea, a few black tea and oolong tea) as the tea base, and fresh flowers that are suitable for eating and can emit fragrance as the flower material, through a special scenting process. Commonly used flowers include jasmine, white jasmine, pearl jasmine, osmanthus, etc. Among them, jasmine tea is the most common.

[0004] The production of scented tea mainly includes the following steps: picking and processing flowers: select half-opened or budding flowers, and remove pedicels, stems, dust, insects and other impurities; preparing tea leaves: select high-quality tea leaves as tea leaves, and carry out appropriate processing, such as drying and screening; scenting: mix flowers and tea leaves in a certain proportion, and allow the tea leaves to fully absorb the fragrance of flowers through stacking and turning; drying: dry the scented tea leaves to remove excess water while retaining the fragrance of flowers; weaving and re-scenting: repeat the above scenting and drying processes to achieve the ideal aroma effect; screening and packaging: screen the scented scented tea to remove impurities and package it into finished products.

[0005] In the production process of scented tea, some tiny impurities such as hair, fiber, fluff, ash powder, etc. may be mixed into tea leaves and flower materials during mixing and scenting. These impurities not only affect the appearance quality of scented tea, but also may affect its taste and aroma. Therefore, removing these impurities is one of the key steps to ensure the quality of scented tea. Electrostatic slag removal technology uses a high-voltage electrostatic field to ionize the gas, so that the dust particles are charged and adsorbed onto the electrode. In the production of scented tea, an electrostatic field is generated by electrostatic slag removal equipment, so that the impurities in the tea leaves and flower materials are charged, and then adsorbed onto the dust collecting plate under the action of the electric field, thereby achieving the purpose of slag removal.

[0006] Electrostatic residue removal technology is mainly used in the screening process of scented tea and the screening process after scenting. It can effectively remove tiny impurities in tea leaves and flower materials, and improve the purity and appearance quality of scented tea. At the same time, due to the effect of the electrostatic field, the aroma and taste of tea leaves and flower materials can also be better preserved.

[0007] The currently common electrostatic slag removal equipment, because the components of scented tea are relatively light, when the raw materials for slag removal are turned over, the lightweight scented tea components are easily adsorbed by static electricity along with the broken slag that needs to be screened out, resulting in the loss of some scented tea components, resulting in a decrease in yield and an increase in production costs. Summary of the invention

[0008] In view of the deficiencies in the prior art, the present invention provides an electrostatic slag removal device and a slag removal method for scented tea processing.

[0009] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0010] An electrostatic slag removal device for scented tea processing comprises a drum bracket, a fixed drum is mounted inside the drum bracket, a feeding mechanism is arranged on one side of the fixed drum, a discharging mechanism is arranged on the other side of the fixed drum, a slag opening is arranged at the bottom end of the fixed drum, a slag discharging mechanism is arranged at the bottom end of the slag opening, an electric field generator is also arranged inside the drum bracket, the electric field generator comprises a first electrode plate and a second electrode plate, the first electrode plate is arranged at the top end of the fixed drum, the second electrode plate is arranged at the bottom end of the slag discharging mechanism, and the electrode polarities of the first electrode plate and the second electrode plate are opposite; a screening drum is rotatably arranged inside the fixed drum, a plurality of sieve plate grooves are opened on the side wall of the screening drum, and a device is installed inside each of the sieve plate grooves A separation filter plate is arranged, and a turning assembly is arranged inside the screening drum, and the turning assembly includes at least two turning units along the axial direction of the screening drum; the driving direction and driving speed of each turning unit of the turning assembly can be adjusted, so as to drive the scented tea raw materials to be turned and dispersed inside the screening drum, and an electric field can be generated between the first electrode plate and the second electrode plate, and the direction of the electric field is pointed from the top of the fixed drum to the slag discharge mechanism, and under the drive of the electric field, impurities and debris in the scented tea raw materials are separated from the scented tea raw materials from the separation filter plate; after the impurities and debris are completely separated from the scented tea raw materials, the direction of driving the scented tea raw materials by each turning unit of the turning assembly is pointed from the feeding mechanism to the direction of the discharge mechanism.

[0011] Preferably, the material turning assembly also includes a central mounting shaft, and each of the material turning units is sleeved on the outside of the central mounting shaft; each of the material turning units includes an outer driving ring and a central connecting ring, and a plurality of stirring blades are circumferentially arranged between the outer driving ring and the central connecting ring; the stirring blades are tightly attached to the inner wall of the screening drum, and there is an angle between the stirring blades and the axis of the screening drum.

[0012] Preferably, the screening drum comprises a plurality of sub-drums, the outer driving sleeve of the material turning unit is rotatably connected to two adjacent sub-drums, and the rotation of each sub-drum and the rotation of each material turning unit do not interfere with each other; a drum driving tooth groove is arranged on the outer side of the sub-drum, a drum driving motor is arranged just below the screening drum and on the outer side of the fixed drum, a driving roller is fixedly arranged on the output shaft of the drum driving motor, a plurality of rolling driving gears are sleeved on the outer side of the driving roller, each of the rolling driving gears penetrates into the interior of the fixed drum, and each of the rolling driving gears is respectively meshed with the gear between the drum driving tooth groove of one of the sub-drums.

[0013] Preferably, a ring driving tooth groove is arranged on the outside of the outer driving ring, and a ring driving motor is arranged directly above each of the turning units and on the outside of the fixed roller, and the output shafts of the ring driving motors are respectively provided with ring driving gears, and the ring driving gears are respectively meshed with gears between the ring driving tooth grooves.

[0014] Preferably, during the electrostatic slag removal process of the scented tea raw materials, the turning units located at both ends are driven by the corresponding ring drive motors to drive the scented tea raw materials to be transported to the middle of the screening drum; after the electrostatic slag removal of the scented tea raw materials is completed, each of the turning units is driven by the corresponding ring drive motors to drive the scented tea raw materials to be transported to one side of the discharge mechanism.

[0015] Preferably, the feeding mechanism includes a feeding conveyor belt and a primary screening mechanism, the tail end of the feeding conveyor belt is arranged above the primary screening mechanism, and the primary screening mechanism includes a plurality of circulating primary screen plates, and the flower tea raw materials input from the feeding conveyor belt can fall onto the upper surface of each of the primary screen plates, and after being screened by the primary screen plates, the screened flower tea raw materials can move with each of the primary screen plates to the inside of the screening drum, and fall into the inside of the screening drum from the upper surface of the primary screen plates.

[0016] Preferably, the discharging mechanism comprises a discharging conveyor belt, which is arranged at the lower part of one end of the screening drum close to the discharging conveyor belt, and the scented tea raw materials are output from the inside of the screening drum to the upper surface of the discharging conveyor belt under the synchronous driving of each of the turning units of the turning assembly, and are output after being transported by the discharging conveyor belt.

[0017] Preferably, the slag discharge mechanism includes a circulatingly rotating slag discharge belt, the tail end of the slag discharge belt extends out of the slag opening, and the tail end of the slag discharge belt is provided with a slag discharge scraper, which can scrape off impurities and debris in the scented tea raw materials that fall onto the surface of the slag discharge belt through the action of the electric field.

[0018] Preferably, the slag discharge belt can completely cover the slag opening, and a certain distance exists between the bottom end of the slag opening on one side close to the tail end of the slag discharge belt and the slag discharge belt.

[0019] A method for removing slag for scented tea processing, using the above-mentioned electrostatic slag removal equipment for scented tea processing, comprises the following steps:

[0020] S1. Start the electric field generator in advance to generate an electric field between the first electrode plate and the second electrode plate, and the direction of the electric field is from the top of the fixed roller to the slag discharge mechanism;

[0021] S2, placing the scented tea raw materials that need to be de-slaged inside the feeding mechanism, and the feeding mechanism transports a certain amount of scented tea raw materials into the screening drum;

[0022] S3, under the rotation of the screening drum and the continuous turning action of each turning unit of the turning assembly, the scented tea raw materials are continuously rolled and turned inside the screening drum;

[0023] S4, impurities and debris in the scented tea raw materials are driven by the electric field inside the electric field, pass through the separation filter plate of the screening drum, enter the slag opening, and fall into the slag discharge mechanism before being discharged;

[0024] S5. After the slag discharge mechanism no longer discharges impurities and debris in the scented tea raw materials, the screening drum stops rotating, and the scented tea raw materials are synchronously driven by the various turning units of the turning assembly to move to one side of the discharge mechanism inside the screening drum, and are finally discharged through the discharge mechanism.

[0025] Compared with the prior art, the present invention provides an electrostatic slag removal device and slag removal method for scented tea processing, which has the following beneficial effects:

[0026] 1. The electrostatic slag removal equipment for flower tea processing has a first electrode plate and a second electrode plate with opposite electrode polarities, so that an electric field is generated between the first electrode plate and the second electrode plate, with the direction being from the top of the fixed drum to the slag discharge mechanism. Then, the flower tea raw materials that need to be electrostatically slag removed are transported by the feeding mechanism into the screening drum inside the fixed drum. The flower tea raw materials are inside the screening drum, and under the rotation of the screening drum and the continuous turning of each turning unit of the turning assembly, the flower tea raw materials are continuously rolled and turned inside the screening drum. Impurities and debris in the flower tea raw materials can be driven by the electric field under the action of the electric field, pass through the partition filter plate of the screening drum, enter the slag opening, fall into the slag discharge mechanism, and then be output, so that they can be discharged through the electric field. The field can effectively separate and remove impurities and debris in the scented tea raw materials, and since the side wall of the screening drum is provided with a plurality of sieve plate grooves, each sieve plate groove is provided with a partition filter plate. Through the function of the partition filter plate, it can effectively prevent lightweight scented tea components from being easily adsorbed by electrostatics along with the debris to be screened out, thereby avoiding the loss of some scented tea components and improving the yield of scented tea; then after the slag discharge mechanism no longer discharges impurities and debris in the scented tea raw materials, the screening drum stops rotating, and the scented tea raw materials are synchronously driven by each turning unit of the turning assembly, move to the side of the discharge mechanism inside the screening drum, and are finally discharged through the discharge mechanism, thereby obtaining the scented tea after impurities are removed, ensuring the purity and appearance quality of the scented tea.

[0027] 2. This kind of electrostatic slag removal equipment for flower tea processing, when feeding through the feeding mechanism, each turning unit, driven by the corresponding ring drive motor, drives the flower tea raw materials to be transported to one side of the discharge mechanism, and evenly spreads the flower tea raw materials inside the screening drum; in the process of electrostatic slag removal of the flower tea raw materials, the turning units located at both ends, driven by the corresponding ring drive motor, drive the flower tea raw materials to be transported to the middle of the screening drum, and at the same time, under the rotation of the screening drum, the flower tea raw materials can be continuously rolled and turned inside the screening drum, so as to effectively separate impurities and debris in the flower tea raw materials; after the electrostatic slag removal of the flower tea raw materials is completed, each turning unit, driven by the corresponding ring drive motor, drives the flower tea raw materials to be transported to one side of the discharge mechanism, so that the separated flower tea raw materials can be discharged from the discharge mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is one of the three-dimensional structural schematic diagrams of an electrostatic slag removal device for scented tea processing according to the present invention;

[0029] Figure 2 This is the second schematic diagram of the three-dimensional structure of an electrostatic slag removal device for scented tea processing according to the present invention;

[0030] Figure 3 It is a three-dimensional structural schematic diagram of a feeding mechanism of an electrostatic slag removal device for scented tea processing according to the present invention;

[0031] Figure 4 It is a three-dimensional structural schematic diagram of a slag discharge mechanism of an electrostatic slag removal device for scented tea processing according to the present invention;

[0032] Figure 5 It is a cross-sectional schematic diagram of a fixed drum, a screening drum and a material turning assembly of an electrostatic slag removal device for scented tea processing according to the present invention;

[0033] Figure 6 It is a three-dimensional structural schematic diagram of a screening drum and a material turning assembly of an electrostatic slag removal device for scented tea processing according to the present invention;

[0034] Figure 7 The present invention is a schematic diagram of the three-dimensional structure of a material turning component of an electrostatic slag removal device for scented tea processing.

[0035] In the figure: 1. drum bracket; 2. fixed drum; 21. slag opening; 3. feeding mechanism; 31. feeding conveyor belt; 32. primary screening mechanism; 321. primary screen plate; 4. discharging mechanism; 41. discharging conveyor belt; 5. slag discharging mechanism; 51. slag discharging belt; 52. slag discharging scraper; 6. electric field generator; 61. first electrode plate; 62. second electrode plate; 7. screening drum; 71. sieve plate groove; 72. separating filter plate; 73. sub-drum; 731. drum drive tooth groove; 74. drum drive motor; 75. driving roller; 76. rolling drive gear; 8. turning assembly; 81. turning unit; 811. outer drive collar; 812. center connecting collar; 813. stirring blade; 814. collar drive tooth groove; 82. center mounting shaft; 83. collar drive motor; 831. collar drive gear. DETAILED DESCRIPTION

[0036] The following will be combined with 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 of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] As introduced in the background technology, in order to solve the deficiencies existing in the prior art and the above technical problems, the present application proposes an electrostatic slag removal device and slag removal method for scented tea processing.

[0038] Embodiment 1

[0039] Please refer to Figure 1 - Figure 7, an electrostatic slag removal device for scented tea processing, comprising a drum support 1, a fixed drum 2 is mounted inside the drum support 1, a feeding mechanism 3 is arranged on one side of the fixed drum 2, a discharging mechanism 4 is arranged on the other side of the fixed drum 2, a slag opening 21 is arranged at the bottom end of the fixed drum 2, a slag discharging mechanism 5 is arranged at the bottom end of the slag opening 21, an electric field generator 6 is also arranged inside the drum support 1, the electric field generator 6 comprises a first electrode plate 61 and a second electrode plate 62, the first electrode plate 61 is arranged at the top of the fixed drum 2, the second electrode plate 62 is arranged at the bottom end of the slag discharging mechanism 5, and the electrode polarities of the first electrode plate 61 and the second electrode plate 62 are opposite; a screening drum 7 is rotatably arranged inside the fixed drum 2, and a plurality of sieve plate grooves 71 are opened on the side wall of the screening drum 7, and each sieve plate groove 71 A separation filter plate 72 is installed inside, and a turning assembly 8 is arranged inside the screening drum 7. The turning assembly 8 includes at least two turning units 81 along the axial direction of the screening drum 7; the driving direction and driving speed of each turning unit 81 of the turning assembly 8 can be adjusted to drive the scented tea raw materials to be turned and dispersed inside the screening drum 7, and an electric field can be generated between the first electrode plate 61 and the second electrode plate 62, and the direction of the electric field is pointed from the top of the fixed drum 2 to the slag discharge mechanism 5. Under the drive of the electric field, impurities and debris in the scented tea raw materials are separated from the scented tea raw materials from the separation filter plate 72; after the impurities and debris are completely separated from the scented tea raw materials, the direction of driving the scented tea raw materials by each turning unit 81 of the turning assembly 8 is pointed from the feeding mechanism 3 to the direction of the discharge mechanism 4.

[0040] The electrostatic slag removal equipment for scented tea processing of the present embodiment is suitable for the screening process of scented tea and the screening process after scenting. When in use, the electric field generator 6 is first started. Since the first electrode plate 61 is arranged at the top of the fixed drum 2 and the second electrode plate 62 is arranged at the bottom of the slag discharge mechanism 5, the electrode polarities of the first electrode plate 61 and the second electrode plate 62 are opposite, so that an electric field is generated between the first electrode plate 61 and the second electrode plate 62, with the direction pointing from the top of the fixed drum 2 to the slag discharge mechanism 5. Then, the scented tea raw materials that need to be electrostatically slag-removed are conveyed by the feeding mechanism 3 into the screening drum 7 inside the fixed drum 2. The scented tea raw materials are inside the screening drum 7. Under the rotation of the screening drum 7 and the continuous turning action of the turning units 81 of the turning assembly 8, the scented tea raw materials are continuously rolled and turned inside the screening drum 7. Impurities and debris in the scented tea raw materials can be driven by the electric field under the action of the electric field. The partition filter plate 72 passes through the screening drum 7, enters the slag opening 21, falls into the slag discharge mechanism 5, and is then discharged. Thus, the impurities and debris in the scented tea raw material can be effectively separated and removed through the action of the electric field. Since the side wall of the screening drum 7 is provided with a plurality of screening plate slots 71, each screening plate slot 71 is provided with a partition filter plate 72. Through the action of the partition filter plate 72, it is possible to effectively prevent the lightweight scented tea components from being easily adsorbed by electrostatics along with the debris to be screened out, thereby avoiding the loss of some scented tea components and improving the yield of the scented tea. Then, after the slag discharge mechanism 5 no longer discharges the impurities and debris in the scented tea raw material, the screening drum 7 stops rotating, and the scented tea raw material is synchronously driven by each turning unit 81 of the turning assembly 8, moves to the side of the discharge mechanism 4 inside the screening drum 7, and is finally discharged through the discharge mechanism 4, thereby obtaining the scented tea after impurities are removed, ensuring the purity and appearance quality of the scented tea.

[0041] For further information, please refer to Figure 1 - Figure 2 , Figure 5 - Figure 7 The material turning assembly 8 also includes a central installation shaft 82, and each material turning unit 81 is sleeved on the outside of the central installation shaft 82; each material turning unit 81 includes an outer driving ring 811 and a central connecting ring 812, and a plurality of stirring blades 813 are arranged on the circumference between the outer driving ring 811 and the central connecting ring 812; the stirring blades 813 are tightly attached to the inner wall of the screening drum 7, and there is an angle between the stirring blades 813 and the axis of the screening drum 7.

[0042] The screening drum 7 includes a plurality of sub-drums 73. The outer driving sleeve 811 of the material turning unit 81 is rotatably connected to two adjacent sub-drums 73, and the rotation of each sub-drum 73 does not interfere with the rotation of each material turning unit 81. A drum driving tooth groove 731 is arranged on the outer side of the sub-drum 73. A drum driving motor 74 is arranged just below the screening drum 7 and on the outer side of the fixed drum 2. A driving roller 75 is fixedly arranged on the output shaft of the drum driving motor 74. A plurality of rolling driving gears 76 are sleeved on the outer side of the driving roller 75. Each rolling driving gear 76 penetrates into the interior of the fixed drum 2, and each rolling driving gear 76 is respectively meshed with the gear between the drum driving tooth groove 731 of a sub-drum 73.

[0043] A ring driving tooth groove 814 is arranged on the outside of the outer driving ring 811, and a ring driving motor 83 is arranged directly above each material turning unit 81 and on the outside of the fixed drum 2. The output shafts of the ring driving motors 83 are respectively provided with ring driving gears 831, and the ring driving gears 831 are respectively meshed with the ring driving tooth grooves 814.

[0044] During the electrostatic slag removal process of the scented tea raw materials, the turning units 81 at both ends are driven by the corresponding ring drive motors 83 to drive the scented tea raw materials to be transported to the middle of the screening drum 7; after the electrostatic slag removal of the scented tea raw materials is completed, each turning unit 81 is driven by the corresponding ring drive motors 83 to drive the scented tea raw materials to be transported to one side of the discharge mechanism 4.

[0045] When in use, the drum drive motor 74 outputs power, which can synchronously drive each rolling drive gear 76 to rotate synchronously through the driving roller 75. Since each rolling drive gear 76 is respectively engaged with the drum drive tooth groove 731 of a sub-drum 73, the power output by the drum drive motor 74 can simultaneously drive each sub-drum 73 to rotate synchronously; through the action of each collar drive motor 83, the collar drive gear 831 is respectively engaged with the gear between the collar drive tooth groove 814, so that each collar drive motor 83 can respectively drive the corresponding material turning unit 81 to rotate, and then the outer drive collar 811 and the central connecting collar 812 can drive each stirring blade 813 to rotate on the screening drum 7;

[0046] Therefore, when feeding through the feeding mechanism 3, each turning unit 81, driven by the corresponding ring drive motor 83, drives the flower tea raw material to be transported to the side of the discharge mechanism 4, and evenly spreads the flower tea raw material inside the screening drum 7; in the process of electrostatic slag removal of the flower tea raw material, the turning units 81 located at both ends, driven by the corresponding ring drive motor 83, drive the flower tea raw material to be transported to the middle of the screening drum 7, and at the same time, under the rotation of the screening drum 7, the flower tea raw material can be continuously rolled and turned inside the screening drum 7, so as to effectively separate impurities and debris in the flower tea raw material; after the electrostatic slag removal of the flower tea raw material is completed, each turning unit 81, driven by the corresponding ring drive motor 83, drives the flower tea raw material to be transported to the side of the discharge mechanism 4, so that the separated flower tea raw material can be discharged from the discharge mechanism 4.

[0047] For further information, please refer to Figure 1 - Figure 3 The feeding mechanism 3 includes a feeding conveyor belt 31 and a primary screening mechanism 32. The tail end of the feeding conveyor belt 31 is arranged above the primary screening mechanism 32. The primary screening mechanism 32 includes a plurality of circulating primary screening plates 321. The scented tea raw materials input from the feeding conveyor belt 31 can fall onto the upper surface of each primary screening plate 321, and after being screened by the primary screening plates 321, the screened scented tea raw materials can move to the inside of the screening drum 7 with each primary screening plate 321, and fall into the inside of the screening drum 7 from the upper surface of the primary screening plates 321.

[0048] Therefore, when in use, the flower tea raw materials input through the feed conveyor belt 31 can first fall onto the upper surface of each primary sieve plate 321, and be primarily screened on the primary sieve plates 321 of the primary screening mechanism 32 as the primary sieve plates 321 move. The screened flower tea raw materials can move to the inside of the screening drum 7 along with each primary sieve plate 321, and fall into the inside of the screening drum 7 from the upper surface of the primary sieve plates 321, thereby avoiding excessive dust and the like in the flower tea raw materials and effectively improving the efficiency of electrostatic slag removal.

[0049] For further information, please refer to Figure 1 - Figure 2 , Figure 4 The discharging mechanism 4 includes a discharging conveyor belt 41, which is arranged at the lower part of one end of the screening drum 7 close to the discharging conveyor belt 41. The scented tea raw materials are synchronously driven by each turning unit 81 of the turning assembly 8, and are output from the inside of the screening drum 7 to the upper surface of the discharging conveyor belt 41, and are output after being transported by the discharging conveyor belt 41.

[0050] Therefore, the scented tea raw materials outputted from the inside of the screening drum 7 by the synchronous driving of each turning unit 81 can be effectively transported and collected through the conveyor belt 41 .

[0051] For further information, please refer to Figure 1 - Figure 4 The slag discharge mechanism 5 includes a circulating slag discharge belt 51, a slag opening 21 extends from the tail end of the slag discharge belt 51, and a slag discharge scraper 52 is provided at the tail end of the slag discharge belt 51. The slag discharge scraper 52 can scrape off impurities and debris in the scented tea raw materials that fall onto the surface of the slag discharge belt 51 through the action of the electric field.

[0052] The slag discharge belt 51 can completely cover the slag opening 21 , and there is a certain distance between the bottom end of the slag opening 21 close to the tail end of the slag discharge belt 51 and the slag discharge belt 51 .

[0053] Therefore, when in use, since the slag discharge belt 51 can completely cover the slag opening 21, under the drive of the electric field, impurities and debris in the scented tea raw materials can fully enter the slag opening 21 and fall onto the surface of the slag discharge belt 51. Then, under the transportation of the slag discharge belt 51, the slag discharge scraper 52 arranged at the tail end of the slag discharge belt 51 can scrape off the impurities and debris in the scented tea raw materials that fall onto the surface of the slag discharge belt 51 through the action of the electric field from the surface of the slag discharge belt 51, thereby collecting and removing the dust.

[0054] Embodiment 2

[0055] A method for removing slag for scented tea processing, using the electrostatic slag removal device for scented tea processing as described in Example 1;

[0056] The slag removal method for scented tea processing in this embodiment can be applied to the screening process of scented tea and the screening process after scenting;

[0057] A method for removing slag for scented tea processing comprises the following steps:

[0058] S1, start the electric field generator 6 in advance, generate an electric field between the first electrode plate 61 and the second electrode plate 62, and the direction of the electric field is from the top of the fixed roller 2 to the slag discharge mechanism 5;

[0059] S2, placing the scented tea raw materials that need to be de-slaged inside the feeding mechanism 3, and the feeding mechanism 3 transports a certain amount of scented tea raw materials to the inside of the screening drum 7;

[0060] S3, under the rotation of the screening drum 7 and the continuous turning action of each turning unit 81 of the turning assembly 8, the scented tea raw material is continuously rolled and turned inside the screening drum 7;

[0061] S4, impurities and debris in the scented tea raw material are driven by the electric field inside the electric field, pass through the partition filter plate 72 of the screening drum 7, enter the slag opening 21, and fall into the slag discharge mechanism 5 and then are discharged;

[0062] S5. After the slag discharge mechanism 5 stops discharging impurities and debris in the scented tea raw material, the screening drum 7 stops rotating, and the scented tea raw material is synchronously driven by each turning unit 81 of the turning assembly 8, moves to the side of the discharging mechanism 4 inside the screening drum 7, and is finally discharged through the discharging mechanism 4.

[0063] Specifically, this embodiment is applied in the screening process of jasmine tea after scenting, so as to remove some tiny impurities that may be mixed in the scenting process, such as flower stalks, flower leaves, fibers, fluff, ash powder and other impurities, thereby improving the purity and appearance quality of the scented tea, and reducing the loss of some scented tea components due to the fact that lightweight scented tea components are easily adsorbed by static electricity along with the debris that needs to be screened out. At the same time, due to the effect of the electrostatic field, the aroma and taste of the tea leaves and flower materials can be better preserved.

[0064] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electrostatic slag removal device for scented tea processing, comprising a drum support (1), a fixed drum (2) being mounted inside the drum support (1), a feeding mechanism (3) being arranged on one side of the fixed drum (2), and a discharging mechanism (4) being arranged on the other side of the fixed drum (2), characterized in that: A slag opening (21) is provided at the bottom end of the fixed roller (2), a slag discharge mechanism (5) is provided at the bottom end of the slag opening (21), an electric field generator (6) is also provided inside the roller support (1), the electric field generator (6) comprises a first electrode plate (61) and a second electrode plate (62), the first electrode plate (61) is provided at the top end of the fixed roller (2), the second electrode plate (62) is provided at the bottom end of the slag discharge mechanism (5), and the electrode polarities of the first electrode plate (61) and the second electrode plate (62) are opposite; A screening drum (7) is rotatably arranged inside the fixed drum (2), a plurality of screen plate slots (71) are provided on the side wall of the screening drum (7), a partition filter plate (72) is installed inside each of the screen plate slots (71), a material turning assembly (8) is arranged inside the screening drum (7), and the material turning assembly (8) includes at least two material turning units (81) along the axial direction of the screening drum (7); The driving direction and driving speed of each of the turning units (81) of the turning assembly (8) are adjustable, and the scented tea raw materials are driven to turn and disperse inside the screening drum (7). An electric field can be generated between the first electrode plate (61) and the second electrode plate (62), and the direction of the electric field is directed from the top of the fixed drum (2) to the slag discharge mechanism (5). Under the drive of the electric field, impurities and debris in the scented tea raw materials are separated from the scented tea raw materials at the separation filter plate (72); After the impurities and debris are completely separated from the scented tea raw materials, the direction in which the scented tea raw materials are driven by each of the tipping units (81) of the tipping assembly (8) is directed from the feeding mechanism (3) to the direction of the discharging mechanism (4).

2. The electrostatic slag removal equipment for scented tea processing according to claim 1, characterized in that: The material turning assembly (8) further comprises a central installation shaft (82), and each of the material turning units (81) is sleeved outside the central installation shaft (82); Each of the material turning units (81) comprises an outer driving collar (811) and a central connecting collar (812), and a plurality of stirring blades (813) are arranged on the circumference between the outer driving collar (811) and the central connecting collar (812); The stirring blade (813) is in close contact with the inner wall of the screening drum (7), and an angle is formed between the stirring blade (813) and the axis of the screening drum (7).

3. The electrostatic slag removal equipment for scented tea processing according to claim 2, characterized in that: The screening drum (7) comprises a plurality of sub-drums (73), the outer driving sleeve (811) of the material turning unit (81) is rotatably connected to two adjacent sub-drums (73), and the rotation of each sub-drum (73) does not interfere with the rotation of each material turning unit (81); A roller driving tooth groove (731) is arranged on the outer side of the sub-roller (73); a roller driving motor (74) is arranged directly below the screening roller (7) and on the outer side of the fixed roller (2); a driving roller (75) is fixedly arranged on the output shaft of the roller driving motor (74); a plurality of rolling driving gears (76) are sleeved on the outer side of the driving roller (75); each of the rolling driving gears (76) penetrates into the interior of the fixed roller (2); and each of the rolling driving gears (76) is respectively meshed with a gear between the roller driving tooth grooves (731) of one of the sub-rollers (73).

4. The electrostatic slag removal equipment for scented tea processing according to claim 3, characterized in that: A collar driving tooth groove (814) is arranged on the outside of the outer driving collar (811), and a collar driving motor (83) is arranged directly above each of the material turning units (81) and on the outside of the fixed roller (2). The output shafts of the collar driving motors (83) are respectively provided with collar driving gears (831), and the collar driving gears (831) are respectively gear-engaged with the collar driving tooth grooves (814).

5. The electrostatic slag removal equipment for scented tea processing according to claim 4, characterized in that: During the electrostatic dregs removal process of the scented tea raw material, the turning units (81) located at both ends are driven by the corresponding sleeve drive motors (83) to drive the scented tea raw material to be transported to the middle of the screening drum (7); After the electrostatic slag removal of the scented tea raw material is completed, each of the turning units (81) is driven by the corresponding sleeve drive motor (83) to drive the scented tea raw material to be transported to one side of the discharge mechanism (4).

6. The electrostatic slag removal equipment for scented tea processing according to claim 1, characterized in that: The feeding mechanism (3) comprises a feeding conveyor belt (31) and a primary screening mechanism (32), wherein the rear end of the feeding conveyor belt (31) is arranged above the primary screening mechanism (32), and the primary screening mechanism (32) comprises a plurality of primary screening plates (321) that move in a circular motion, wherein the scented tea raw materials input from the feeding conveyor belt (31) can fall onto the upper surface of each of the primary screening plates (321), and after being screened by the primary screening plates (321), the screened scented tea raw materials can move with each of the primary screening plates (321) to the inside of the screening drum (7), and fall from the upper surface of the primary screening plates (321) into the inside of the screening drum (7).

7. The electrostatic slag removal equipment for scented tea processing according to claim 1, characterized in that: The discharge mechanism (4) comprises a discharge conveyor belt (41), and the discharge conveyor belt (41) is arranged at the lower part of one end of the screening drum (7) close to the discharge conveyor belt (41). The scented tea raw materials are synchronously driven by the respective turning units (81) of the turning assembly (8) to be output from the inside of the screening drum (7) to the upper surface of the discharge conveyor belt (41), and are output after being transported by the discharge conveyor belt (41).

8. The electrostatic slag removal equipment for scented tea processing according to claim 1, characterized in that: The slag discharge mechanism (5) comprises a slag discharge belt (51) that rotates in a circular motion, the tail end of the slag discharge belt (51) extending out of the slag material opening (21), and a slag discharge scraper (52) is provided at the tail end of the slag discharge belt (51), and the slag discharge scraper (52) is capable of scraping off impurities and debris in the scented tea raw material that falls onto the surface of the slag discharge belt (51) through the action of an electric field from the surface of the slag discharge belt (51).

9. The electrostatic slag removal equipment for scented tea processing according to claim 8, characterized in that: The slag discharge belt (51) can completely cover the slag opening (21), and a certain distance exists between the bottom end of one side of the slag opening (21) close to the tail end of the slag discharge belt (51) and the slag discharge belt (51).

10. A method for removing slag for scented tea processing, using an electrostatic slag removal device for scented tea processing as claimed in any one of claims 1 to 9, characterized in that: The steps include: S1, pre-starting the electric field generator (6), generating an electric field between the first electrode plate (61) and the second electrode plate (62), with the direction of the electric field pointing from the top of the fixed roller (2) to the slag discharge mechanism (5); S2, placing the scented tea raw materials that need to be deslaged inside the feeding mechanism (3), and the feeding mechanism (3) transports a certain amount of scented tea raw materials into the screening drum (7); S3, under the rotation of the screening drum (7) and the continuous turning action of each turning unit (81) of the turning assembly (8), the scented tea raw material is continuously rolled and turned inside the screening drum (7); S4, impurities and debris in the scented tea raw material are driven by the electric field inside the electric field, pass through the separation filter plate (72) of the screening drum (7), enter the slag opening (21), and fall into the slag discharge mechanism (5) and are discharged; S5. After the slag discharge mechanism (5) stops discharging impurities and debris from the scented tea raw material, the screening drum (7) stops rotating, and the scented tea raw material is synchronously driven by the various turning units (81) of the turning assembly (8) to move inside the screening drum (7) toward the side of the discharging mechanism (4), and is finally discharged through the discharging mechanism (4).

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