Screening device for black tea leaf processing
By designing a screening device for processing black tea leaves and using a swinging screen plate and a blower to achieve multi-stage screening, the problems of low efficiency and complex operation of black tea leaf screening equipment were solved, and an efficient and simple screening process was achieved.
Patent Information
- Application Number
- CN202422630767.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-10-30
AI Technical Summary
Existing black tea leaf screening equipment is inefficient and complex to operate, manual screening consumes human resources, and the equipment on the market is difficult to operate and has poor screening effect.
A screening device for processing black tea leaves was designed, which includes a screening drum, a swinging sieve plate and a blower. The swinging sieve plate is driven by a swing motor and the blower is used to provide air flow to achieve multi-stage screening with high screening efficiency and simple operation.
The efficiency of black tea leaf screening is improved, the operation process is simplified, efficient black tea leaf screening is achieved, the screening effect is ensured, and the waste of human resources is reduced.
Smart Images
Figure CN223367538U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tea production, in particular to a screening device for processing black tea leaves. Background Art
[0002] Black tea harvesting standards are relatively low, depending on the tea plant's growth, climatic conditions, and the type of tea being prepared. Generally, the second or third leaves and buds on the tea plant are considered optimal for harvesting. After harvesting, tea leaves must be processed as quickly as possible to maintain freshness and preserve nutrients.
[0003] The screening of black tea leaves is a key step in the black tea processing process. It determines the quality and grade of the tea. The screened black tea leaves can ensure the quality of the black tea leaves after screening, and obtain high-quality black tea products by removing unqualified leaves and impurities.
[0004] At present, most of the screening of black tea leaves is still done manually, which is inefficient and requires high screening experience. It also requires the cooperation of multiple people, which greatly wastes human resources. In order to solve this problem, there are many vibration screening devices on the market. However, these devices are difficult to operate, the process is relatively cumbersome, and the screening effect is not good. Therefore, a screening device for processing black tea leaves is proposed. Utility Model Content
[0005] In view of the shortcomings of the existing technology, the utility model provides a screening device for processing black tea leaves, which has the advantages of high efficiency and simple operation, and solves the problems of low operating efficiency and complex operation of black tea leaf processing and screening equipment.
[0006] In order to achieve the above-mentioned purpose of high efficiency and simple operation, the utility model provides the following technical solution: a screening device for processing black tea leaves, comprising a support frame, a screening drum fixedly mounted on the top of the support frame, a funnel drum arranged on the top of the screening drum, and a protective cover arranged on the top of the funnel drum, a primary screening assembly being arranged at the bottom of the protective cover, and a fine screening assembly being arranged on the outer side of the screening drum;
[0007] The fine screening assembly includes several first blast pipes arranged on the outside of the funnel cylinder, a first air supply pipe arranged on the outside of the first blast pipe, several second blast pipes arranged on the outside of the screening cylinder, a second air supply pipe arranged on the outside of the second blast pipe, a swinging screen plate rotatably connected to the inner wall of the screening cylinder, a swinging motor fixedly installed on the outside of the screening cylinder, a blower fixedly installed on the bottom side of the support frame, an air supply pipe arranged on the top of the blower, and a fine screen plate arranged on the inner wall of the screening cylinder.
[0008] Furthermore, the primary screening assembly includes a driving motor fixedly mounted on the top of the protective cover, a transmission rod fixedly mounted on the bottom of the output shaft of the driving motor, and a primary screening mesh plate fixedly mounted on the outside of the transmission rod.
[0009] Furthermore, the top of the screening cylinder is embedded in the bottom end of the funnel cylinder and is fixed to the funnel cylinder by screw threads. A sealing rubber gasket used in conjunction with the funnel cylinder is provided on the top of the screening cylinder.
[0010] Furthermore, a feed pipe is provided on the side of the protective cover, a sealing cover plate is fixed on the top of the feed pipe by a snap, a plurality of air outlets for air circulation are opened on the top of the protective cover, and the bottom of the protective cover is embedded in the top opening of the funnel tube and is fixed to the funnel tube by threads.
[0011] Furthermore, one end of the first blast pipe is embedded in the interior of the funnel tube and an interception cover fixed by a snap is provided at the opening; one end of the second blast pipe is embedded in the interior of the screening tube and an interception net fixed by a snap is provided at the opening.
[0012] Furthermore, the output shaft of the swing motor transversely passes through the side wall of the screening drum and is fixedly installed on the side of the swing screen plate, and the side of the air duct is respectively connected to the first air supply pipe and the second air supply pipe.
[0013] Furthermore, the inner side wall of the screening cylinder is provided with a plurality of fixed blocks, the bottom outer side of the subdividing screen is provided with a plurality of limit slots used in conjunction with the fixed blocks, and the bottom outer side of the screening cylinder is provided with a storage box fixed with a buckle.
[0014] Furthermore, the output shaft of the driving motor vertically passes through the protective cover and is rotatably connected to the top wall of the protective cover. The side of the primary screen mesh plate is rotatably connected to the inner wall of the funnel tube, and the mesh surface at the top center of the primary screen mesh plate is an inclined surface.
[0015] Furthermore, filter screens with inconsistent hole diameters are provided inside the primary screen plate, the swing screen plate and the subdividing screen plate.
[0016] Compared with the prior art, the present invention provides a screening device for processing black tea leaves, which has the following beneficial effects:
[0017] 1. The screening device for processing black tea leaves is configured to place black tea leaves into the interior of the funnel cylinder by unscrewing the sealing cover plate, and then start the driving motor. The rotation of the output shaft of the driving motor drives the rotation of the transmission rod, thereby driving the rotation of the primary screening mesh plate. The rotation of the primary screening mesh plate drives the black tea leaves stored on the top to move, and at the same time, start the blower, which drives air into the first air supply pipe, blowing the black tea leaves that fall on the top of the primary screening mesh plate. Under the simultaneous action of rotation and blowing, the black tea leaves of appropriate size pass through the primary screening mesh plate and fall into the interior of the screening cylinder.
[0018] 2. The screening device for processing black tea leaves starts a swing motor, and the rotation of the swing motor drives the swing sieve plate to swing at a certain angle. The swinging of the swing sieve plate makes the black tea leaves falling on the top slide back and forth. At the same time, the blower draws air into the second air supply pipe, and the circulating air passes through the second blower pipe into the interior of the screening cylinder, blowing the black tea leaves falling on the top of the swing sieve plate, so that the black tea leaves of appropriate size pass through the swing sieve plate and fall to the top of the subdividing sieve plate, and the fine residue passes through the subdividing sieve plate and falls into the storage box, thereby solving the problems of low operating efficiency and complex operation of the black tea leaf processing and screening equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a three-dimensional diagram of the structure of the utility model;
[0020] Figure 2 This is a cross-sectional view of the structure of the utility model;
[0021] Figure 3 For this utility model Figure 2 A magnified view of the structure at center A.
[0022] In the figure: 1. Support frame; 2. Screening cylinder; 21. Sealing pad; 22. Storage box; 3. Funnel cylinder; 4. Protective cover; 401. Feed pipe; 402. Sealing cover; 403. Air outlet; 5. Primary screening assembly; 501. Drive motor; 502. Transmission rod; 503. Primary screening mesh plate; 6. Fine screening assembly; 601. First blast pipe; 602. First air supply pipe; 603. Second blast pipe; 604. Second air supply pipe; 605. Swinging sieve plate; 606. Swinging motor; 607. Blower; 608. Air delivery pipe; 609. Fine sieve plate; 610. Interception cover; 611. Interception net. DETAILED DESCRIPTION
[0023] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.
[0024] See also Figures 1 to 3 In this embodiment, a screening device for processing black tea leaves includes a support frame 1, a screening drum 2 fixedly mounted on the top of the support frame 1, a funnel drum 3 disposed on the top of the screening drum 2, and a protective cover 4 disposed on the top of the funnel drum 3. A primary screening assembly 5 is disposed at the bottom of the protective cover 4, and a fine screening assembly 6 is disposed on the outer side of the screening drum 2.
[0025] The fine screening assembly 6 includes several first blast pipes 601 arranged on the outside of the funnel tube 3, a first air supply pipe 602 arranged on the outside of the first blast pipe 601, several second blast pipes 603 arranged on the outside of the screening drum 2, a second air supply pipe 604 arranged on the outside of the second blast pipe 603, a swinging screen plate 605 rotatably connected to the inner wall of the screening drum 2, a swinging motor 606 fixedly installed on the outside of the screening drum 2, a blower 607 fixedly installed on the bottom side of the support frame 1, an air supply pipe 608 arranged on the top of the blower 607, and a fine screening plate 609 arranged on the inner wall of the screening drum 2.
[0026] In this embodiment, the top of the screening cylinder 2 is embedded in the bottom end of the funnel cylinder 3 and fixed to the funnel cylinder 3 by screw threads. A sealing rubber gasket 21 is provided on the top of the screening cylinder 2 for use with the funnel cylinder 3.
[0027] The screening cylinder 2 and the funnel cylinder 3 are fixed with threaded connections to facilitate the subsequent disassembly and cleaning of the device. The sealing gasket 21 separates the screening cylinder 2 and the funnel cylinder 3 to prevent wear between the two due to vibration of the device and seal the interface position.
[0028] In this embodiment, a feed pipe 401 is provided on the side of the protective cover 4, a sealing cover plate 402 is fixed to the top of the feed pipe 401 by a snap, a plurality of air outlets 403 for air circulation are opened on the top of the protective cover 4, and the bottom of the protective cover 4 is embedded in the top opening of the funnel tube 3 and is fixed to the funnel tube 3 by threads.
[0029] The sealing cover plate 402 seals the opening of the feed pipe 401 to prevent the blades from flying out from the inside of the protective cover 4. The threaded connection between the protective cover 4 and the funnel tube 3 is provided to facilitate disassembly and cleaning at a later time.
[0030] It should be noted that a protective cover is provided inside the air outlet 403 to prevent the blades from separating.
[0031] In this embodiment, one end of the first blast pipe 601 is embedded in the interior of the funnel tube 3 and a snap-fixed interception cover 610 is provided at the opening; one end of the second blast pipe 603 is embedded in the interior of the screening tube 2 and a snap-fixed interception net 611 is provided at the opening.
[0032] An interception cover 610 and an interception net 611 are respectively provided inside the first blast pipe 601 and the second blast pipe 603 to intercept the pipe openings and prevent blades from flying out.
[0033] The output shaft of the swing motor 606 passes through the side wall of the screening drum 2 horizontally and is fixedly installed on the side and the side of the swing screen plate 605. The side of the air supply duct 608 is connected to the first air supply duct 602 and the second air supply duct 604 respectively.
[0034] The swing motor 606 and the swing sieve plate 605 are fixedly installed so that after the swing motor 606 is started, it drives the swing sieve plate 605 to rotate at a certain angle, so that the blades on the top of the swing sieve plate 605 move back and forth, allowing blades of appropriate size to pass through the swing sieve plate 605 and fall into the next layer.
[0035] It should be noted that the swing motor 606 only performs reciprocating motion at a certain angle, so that the swing sieve plate 605 flips back and forth, and the black tea leaves slide back and forth on the top of the swing sieve plate 605.
[0036] In this embodiment, the inner side wall of the screening cylinder 2 is provided with several fixed blocks, the bottom outer side of the subdividing screen plate 609 is provided with several limiting slots used in conjunction with the fixed blocks, and the bottom outer side of the screening cylinder 2 is provided with a storage box 22 fixed with a snap.
[0037] A fixed block is provided on the inner side wall of the screening cylinder 2 to fix the subdividing sieve plate 609, so as to facilitate the replacement of the subdividing sieve plate 609 at any time in the later stage, thereby screening the black tea leaves at different picking positions.
[0038] In this embodiment, the primary screening assembly 5 includes a driving motor 501 fixedly mounted on the top of the protective cover 4 , a transmission rod 502 fixedly mounted on the bottom of the output shaft of the driving motor 501 , and a primary screening mesh plate 503 fixedly mounted on the outside of the transmission rod 502 .
[0039] The output shaft of the driving motor 501 vertically passes through the protective cover 4 and is rotatably connected to the top wall of the protective cover 4. The side of the primary screening mesh plate 503 is rotatably connected to the inner wall of the funnel tube 3. The mesh surface at the top center of the primary screening mesh plate 503 is an inclined surface.
[0040] A driving motor 501 is provided to drive the transmission rod 502 to rotate, thereby driving the primary screen mesh plate 503 to rotate. When the primary screen mesh plate 503 rotates, since the top surface is an inclined surface, the movement of blades at different positions is inconsistent. Inconsistent movement will result in relative movement, so that the appropriate blades pass through the primary screen mesh plate 503 and enter the next layer.
[0041] It should be noted that the rotation speed of the driving motor 501 is relatively slow and will not affect the blades from passing through the primary screening plate 503 .
[0042] The primary sieve plate 503, the swing sieve plate 605 and the subdividing sieve plate 609 are internally provided with filter screens with holes of different diameters.
[0043] The working principle of the above embodiment is:
[0044] The black tea leaves are placed into the funnel 3 by unscrewing the sealing cover 402, and the driving motor 501 is started. The rotation of the output shaft of the driving motor 501 drives the rotation of the transmission rod 502, thereby driving the rotation of the primary screening mesh plate 503. The rotation of the primary screening mesh plate 503 drives the black tea leaves stored on the top to move, and at the same time the blower 607 is started. The blower 607 will drive air into the first air supply pipe 602, blowing the black tea leaves that fall on the top of the primary screening mesh plate 503. The black tea leaves of appropriate size pass through the primary screening mesh plate 503 and fall into the interior of the screening cylinder 2 under the simultaneous action of rotation and blowing.
[0045] In addition, by starting the swing motor 606, the rotation of the swing motor 606 drives the swing sieve plate 605 to swing at a certain angle. The swinging of the swing sieve plate 605 causes the fallen black tea leaves on the top to slide back and forth. At the same time, the blower 607 allows air to enter the second air supply pipe 604, and the circulating air passes through the second blower pipe 603 into the interior of the screening cylinder 2, blowing the black tea leaves that fall on the top of the swing sieve plate 605, so that the black tea leaves of appropriate size pass through the swing sieve plate 605 and fall to the top of the subdividing sieve plate 609, and the fine residue passes through the subdividing sieve plate 609 and falls to the storage box 22, thereby solving the problems of low operating efficiency and complex operation of the black tea leaf processing and screening equipment.
[0046] The electrical components mentioned in this article are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device that controls a computer, etc., and the existing public power connection technology is not described in detail in this article.
[0047] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.
[0048] Although the 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 these embodiments without departing from the principles and spirit of the present invention.
Claims
1. A screening device for processing black tea leaves, comprising a support frame (1), a screening drum (2) fixedly mounted on the top of the support frame (1), a funnel drum (3) disposed on the top of the screening drum (2), and a protective cover (4) disposed on the top of the funnel drum (3), characterized in that: A primary screening component (5) is provided at the bottom of the protective cover (4), and a fine screening component (6) is provided on the outside of the screening cylinder (2); The fine screening assembly (6) comprises a plurality of first blast pipes (601) arranged outside the funnel cylinder (3), a first air supply pipe (602) arranged outside the first blast pipe (601), a plurality of second blast pipes (603) arranged outside the screening cylinder (2), a second air supply pipe (604) arranged outside the second blast pipe (603), a swinging sieve plate (605) rotatably connected to the inner side wall of the screening cylinder (2), a swinging motor (606) fixedly mounted on the outer side of the screening cylinder (2), a blower (607) fixedly mounted on the bottom side of the support frame (1), an air delivery duct (608) arranged on the top of the blower (607), and a fine sieve plate (609) arranged on the inner side wall of the screening cylinder (2).
2. The black tea leaf processing screening device according to claim 1, characterized in that: The primary screening assembly (5) comprises a driving motor (501) fixedly mounted on the top of the protective cover (4), a transmission rod (502) fixedly mounted on the bottom of the output shaft of the driving motor (501), and a primary screening mesh plate (503) fixedly mounted on the outside of the transmission rod (502).
3. The black tea leaf screening device according to claim 1, characterized in that: The top of the screening cylinder (2) is embedded in the bottom end of the funnel cylinder (3) and is fixed to the funnel cylinder (3) through threads. A sealing rubber pad (21) used in conjunction with the funnel cylinder (3) is provided on the top of the screening cylinder (2).
4. The black tea leaf screening device according to claim 1, characterized in that: A feeding pipe (401) is provided on the side of the protective cover (4), a sealing cover plate (402) is fixed to the top of the feeding pipe (401) by snapping, a plurality of air outlets (403) for air circulation are opened on the top of the protective cover (4), and the bottom of the protective cover (4) is embedded in the top opening of the funnel tube (3) and is fixed to the funnel tube (3) by screw threads.
5. The black tea leaf processing screening device according to claim 1, characterized in that: One end of the first blast pipe (601) is embedded in the interior of the funnel cylinder (3) and a snap-fastened interception cover (610) is provided at the opening; one end of the second blast pipe (603) is embedded in the interior of the screening cylinder (2) and a snap-fastened interception net (611) is provided at the opening.
6. The black tea leaf screening device according to claim 1, characterized in that: The output shaft of the swing motor (606) transversely penetrates the side wall of the screening drum (2) and is fixedly mounted on the side of the swing screen plate (605). The side of the air supply duct (608) is respectively connected to the first air supply duct (602) and the second air supply duct (604).
7. The black tea leaf screening device according to claim 1, characterized in that: The inner side wall of the screening cylinder (2) is provided with a plurality of fixed blocks, the outer side of the bottom of the subdividing screen plate (609) is provided with a plurality of position limiting slots used in conjunction with the fixed blocks, and the outer side of the bottom of the screening cylinder (2) is provided with a storage box (22) fixed by a buckle.
8. The black tea leaf processing screening device according to claim 2, characterized in that: The output shaft of the driving motor (501) vertically penetrates the protective cover (4) and is rotatably connected to the top wall of the protective cover (4); the side surface of the primary screen mesh plate (503) is rotatably connected to the inner wall of the funnel tube (3); and the mesh surface at the top center position of the primary screen mesh plate (503) is an inclined surface.
9. The black tea leaf processing screening device according to claim 2, characterized in that: The primary sieve plate (503), the swing sieve plate (605) and the subdividing sieve plate (609) are internally provided with filter screens with holes of different diameters.