Quantitative multi-stage tea screening device
By designing a quantitative multi-stage tea screening device, using cross-set dispersing rods and filter plates to disperse tea and remove impurities, combined with the design of gears and cleaning rods, uneven screening and impurities in existing tea screening devices are solved Difficult to remove problems, achieving efficient, accurate tea screening and long equipment life.
Patent Information
- Application Number
- CN202411455308.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-18
- Publication Date
- 2025-01-21
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
During use, existing tea sieving devices are prone to uneven screening due to differences in the shape, size, density and moisture content of the tea, causing blockage, reduced efficiency, and difficult to effectively remove impurities, affecting the quality and production efficiency of tea.
A quantitative multi-stage tea screening device is designed, which uses cross-set dispersing rods and filter plates to disperse tea and remove impurities. Combined with the design of gears and cleaning rods, it achieves uniform screening of tea and cleaning of the screening cylinder.
It improves the efficiency and accuracy of tea screening, reduces tea loss and impurity residues, extends the service life of screening equipment, and ensures the quality and food safety of tea products.
Smart Images
Figure CN119327726A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of tea processing, in particular to a quantitative multi-stage tea screening device. Background Art
[0002] Tea is a common beverage, usually made from the tender leaves and buds of the tea tree. Tea contains caffeine, tea polyphenols, amino acids, vitamins and other ingredients. It has the effects of refreshing the brain, helping digestion, lowering blood lipids and losing weight, and anti-oxidation. Different types of tea and processing methods will affect the taste, aroma and nutritional content of the tea.
[0003] Before the tea leaves are withered, rolled, dried, etc., in order to ensure the quality, market value and consumer experience of the finished tea products, the tea leaves need to be graded and screened during processing. Through grading and screening, the tea leaves can be classified according to their size and other characteristics, and impurities and tea leaves that do not meet the standards can be removed, thereby improving the quality of the overall finished tea products. In addition, since different grades of tea require different processing parameters, grading and screening them will also help the subsequent processing steps to ensure that the quality standards of the processed tea products are consistent.
[0004] However, the existing tea screening device may have the following problems during use:
[0005] Due to the large differences in the shape, size, density, water content, surface roughness and other characteristics of tea leaves, during the screening process, smaller tea leaves of different sizes can directly pass through the sieve holes of different apertures, while larger tea leaves will be stuck in the sieve holes of small apertures, causing blockage in the sieve, affecting the screening efficiency, and also making the tea leaves, regardless of size, only pass through the sieve holes of larger apertures that are not blocked. At the same time, the different water content of tea leaves will affect its fluidity and ability to pass through the sieve holes. Tea leaves with high water content will stick together, even adhere to the sieve, and even block the sieve holes, resulting in reduced screening efficiency and uneven screening of the tea leaves, affecting the screening accuracy. Uneven screening will cause high-quality tea leaves to be mixed with inferior tea leaves, resulting in a waste of resources, and will also affect subsequent processing procedures, resulting in uneven quality of tea products of different grades, affecting the consumer experience. In addition, more time and manpower are required for secondary screening or manual adjustment of tea leaves with uneven screening, reducing production efficiency.
[0006] In addition, the picked tea leaves will be wrapped with impurities, such as tea branches, tea stems, soil, sand and gravel. These impurities will be screened along with the tea leaves, which will reduce the overall quality of the finished tea products, affect the taste, aroma and appearance, and interfere with the screening effect of the tea leaves. In addition, hard impurities such as tea branches and sand and gravel will accelerate the wear of the screen, shortening its life and increasing the cost of maintenance and replacement.
[0007] Therefore, the present invention proposes a quantitative multi-stage tea screening device to make up for and improve the deficiencies of the prior art. Summary of the invention
[0008] 1. Technical issues to be resolved
[0009] In view of the deficiencies in the prior art, the present invention provides a quantitative multi-stage tea screening device, which solves the problems raised in the above-mentioned background technology.
[0010] (II) Technical solution
[0011] To achieve the above objectives, the present invention is implemented through the following technical solutions: a quantitative multi-stage tea screening device, comprising a fixed frame, the upper surface of the fixed frame is fixedly connected to a feed hopper, one side of the feed hopper is provided with a screening cylinder for screening tea leaves, the feed hopper and the screening cylinder are connected, the outer surface of the screening cylinder is evenly penetrated with screening holes, the upper surface of the fixed frame is evenly fixedly connected to a discharge hopper, the discharge hopper is located directly below the screening cylinder, the inner wall of the feed hopper is fixedly connected to an auxiliary rod 1, the side of the auxiliary rod 1 close to the vertical center line of the feed hopper is evenly fixedly connected to a dispersion rod 1, the upper surface of the dispersion rod 1 is evenly fixedly connected to an auxiliary rod 2, the inner wall of the feed hopper and away from the auxiliary rod 1 are evenly fixedly connected to the auxiliary rod 2, One side of the auxiliary rod one is slidably connected to an auxiliary rod three, and the side of the auxiliary rod three close to the vertical center line of the feed hopper is evenly fixedly connected to the dispersion rod two, and the side of the auxiliary rod three away from the dispersion rod two is fixedly connected to a connecting column one, and a straight slot is penetrated through the side of the feed hopper close to the auxiliary rod three, and the connecting column one extends to the outside of the feed hopper through the straight slot, and the outer surface of the feed hopper is rotatably connected to a rotating shaft one, and a slide groove is provided on the outer surface of the rotating shaft one, and the end of the connecting column one extending to the outside of the feed hopper is slidably connected to the inside of the slide groove, and the bottom end of the rotating shaft one is fixedly connected to a gear one, and the upper surface of the fixed frame is rotatably connected to a driving shaft, and the outer surface of the driving shaft is fixedly connected to a toothed disc, and the toothed disc meshes with gear one.
[0012] Preferably, the auxiliary rod 2 is arranged in an "X" shape which is not connected in the middle, and the outer surfaces of the dispersion rod 1, the auxiliary rod 2 and the dispersion rod 2 are all fitted with rubber pads.
[0013] Preferably, the dispersion rod one and the dispersion rod two are symmetrically cross-arranged, and the height of the dispersion rod two close to the auxiliary rod three is higher than the height of the dispersion rod two away from the auxiliary rod three.
[0014] Preferably, the slide groove consists of two arc grooves and two vertical grooves, and the two ends of the arc groove are connected through the vertical grooves respectively.
[0015] Preferably, the inner wall of the feed hopper is fixedly connected with a fixed block, and the fixed block is symmetrically arranged with reference to the vertical center line of the feed hopper, and the lower surface of the fixed block is fixedly connected with a spring 1, and the end of the spring 1 away from the fixed block is fixedly connected with a filter plate, and the filter plate is inclined, and the height of the filter plate away from the side of the screening drum is higher than the height of the filter plate close to the screening drum. The filter plate extends to the inside of the screening drum through the connection between the feed hopper and the screening drum, and the upper surface of the filter plate is fixedly connected with a pressing rod, and the top end of the pressing rod passes through the fixed block and extends to above the fixed block, and the pressing rod and the auxiliary rod are located on the same vertical section.
[0016] Preferably, the screening cylinder is internally rotatably connected to a second rotating shaft, both ends of the second rotating shaft extend to the outside of the screening cylinder, an eccentric block is fixedly connected to the outer surface of the second rotating shaft, one end of the second rotating shaft close to the driving shaft is slidably connected to the driving shaft, an auxiliary block is fixedly connected to the upper surface of the fixed frame, a slider is slidably connected to the interior of the auxiliary block, the slider is fixedly connected to the second rotating shaft, a second spring is fixedly connected to the interior of the auxiliary block, the second spring is fixedly connected to the slider, and the second spring is symmetrically distributed with respect to the horizontal center line of the slider, and the auxiliary block, the slider and the second spring are symmetrically distributed with respect to the vertical center line of the second rotating shaft.
[0017] Preferably, the outer surface of the second rotating shaft located inside the screening cylinder is slidably connected to an auxiliary ring, the outer surface of the auxiliary ring is rotatably connected to a connecting rod one, the end of the connecting rod one away from the auxiliary ring is rotatably connected to a cleaning rod, the cleaning rod can fit against the inner wall of the screening cylinder, the auxiliary ring is fixedly connected to a connecting rod two on the side close to the feed hopper, the connecting rod one, the cleaning rod and the connecting rod two are distributed in a circular array with the center point of the second rotating shaft as a reference, a threaded groove is provided on the outer surface of the second rotating shaft located inside the feed hopper, a nut is threadedly connected to the threaded groove on the outer surface of the second rotating shaft, and the end of the second connecting rod away from the auxiliary ring is rotatably connected to the nut.
[0018] Preferably, the outer surface of the rotating shaft 2 which is away from the driving shaft and extends to the outside of the screening cylinder is fixedly connected with gear 2, the side of the screening cylinder close to gear 2 is rotatably connected with gear 3, the gear 3 is meshed with gear 2, and the side of the screening cylinder close to gear 2 is fixedly connected with meshing teeth, and the meshing teeth are meshed with gear 3.
[0019] (III) Beneficial effects
[0020] The quantitative multi-stage tea screening device provided by the present invention has the following beneficial effects:
[0021] 1. By evenly arranging the dispersion rods 2 on one side of the auxiliary rod 3 near the vertical center line of the feed hopper, when in use, the rotating shaft 1 drives the slide to rotate, and when the slide rotates, the connecting column 1 slidably connected to the inside of the slide drives the dispersion rod 2 fixedly connected to the auxiliary rod 3 to move up and down. Since the dispersion rod 2 and the dispersion rod 1 are symmetrically cross-arranged, and the height of the dispersion rod 2 on the side near the auxiliary rod 3 is higher than the height of the dispersion rod 2 on the side away from the auxiliary rod 3, when the dispersion rod 2 moves downward, the tea leaves that fall from the feed hopper and stick together above the dispersion rod 1 are dispersed. After the tea leaves are dispersed, individual tea leaves can contact the screen more freely, reducing the possibility of tea leaves sticking to block the screening holes, thereby improving the screening efficiency, avoiding local uneven screening caused by tea leaves sticking to each other, and making the grading more accurate. Compared with the existing method of dispersing by mechanical stirring, this dispersion method uses the cross-distributed dispersion rods 2 and 1 to disperse the tea leaves, which can reduce During dispersion, mechanical damage to the tea leaves and the resulting tea loss are reduced, and tea residues in the final product are reduced. The tea leaves to be screened are dispersed in advance, and the tea leaves dispersed by the dispersion rods one and two enter the interior of the screening cylinder through the filter plate below, and the filter plate surface is evenly penetrated with filter holes, so that impurities such as tea branches, tea stalks, soil, sand and gravel wrapped in the tea leaves can fall to the bottom of the filter plate through the filter holes opened on the surface of the filter plate, and these impurities are prevented from entering the screening cylinder together with the tea leaves, which affects the taste, aroma and appearance of the finished tea leaves. After removing the impurities wrapped in the tea leaves, it is convenient for subsequent processing of the tea leaves, such as rolling, drying, packaging, etc., to simplify the production process. At the same time, the blockage of the screening holes and the wear of the screening cylinder by hard impurities such as tea branches and sand and gravel is reduced, the service life of the screening equipment is extended, and the cost of maintenance and replacement of the screening cylinder is reduced. In addition, it also helps to ensure that the tea products produced meet food safety standards and protect the health of consumers.
[0022] 2. By meshing gear 2 with the meshing teeth through gear 3, when in use, shaft 2 drives gear 3 to rotate in the opposite direction to gear 2 through gear 2. When gear 3 rotates, it drives the screening cylinder to rotate in the opposite direction to gear 2 through the meshing teeth. Therefore, the cleaning rod connected to shaft 2 through connecting rod 1 rotates in the opposite direction to the screening cylinder inside the screening cylinder. When the cleaning rod rotates, the tea leaves being screened inside the screening cylinder are stirred to avoid adhesion of the tea leaves to be screened inside the screening cylinder, so that each tea leaf can contact the screening cylinder more freely, reducing the possibility of tea clumps blocking the screening holes, thereby improving the screening efficiency, and helping to ensure that the tea leaves are evenly distributed during the screening process, avoiding local uneven screening due to tea adhesion, making the grading more accurate, and at the same time avoiding clogging of the screening holes due to tea leaves sticking together, affecting the screening process, and maintaining the continuity and smoothness of the screening process.
[0023] 3. By arranging the eccentric block on the outer surface of the second rotating shaft, when in use, the driving shaft drives the second rotating shaft to rotate. When the second rotating shaft rotates, the eccentric block generates centrifugal force to make the second rotating shaft vibrate. Since the upper and lower ends of the slider connected to the second rotating shaft are fixedly connected with the second spring, and the slider is slidably connected to the inside of the auxiliary block, the second rotating shaft jumps up and down under the action of centrifugal force. When the second rotating shaft jumps up and down, it drives the screening drum connected thereto to jump up and down, thereby making the tea leaves to be screened inside the screening drum jump up and down inside the screening drum, avoiding the tea leaves to be screened inside the screening drum from clogging the screening holes. The tea leaves jumping up and down inside the screening drum can make it flow and disperse better in the screening drum, avoiding tea clumping, and allowing the tea leaves to more effectively contact the screening holes on the surface of the screening drum, reducing the possibility of tea leaves clogging the screening holes, thereby improving the screening efficiency, and also avoiding the local screening unevenness caused by the accumulation of tea leaves inside the screening drum, making the grading more accurate, ensuring the consistency of the quality of each grade of tea leaves, thereby improving the quality of the final product.
[0024] 4. By connecting the connecting rod 2 connected to the auxiliary ring with the nut, after the tea leaves inside the screening cylinder are screened, the user rotates the nut counterclockwise to move the nut away from the screening cylinder. When the nut moves, the connecting rod 1 drives the connecting rod 2 to move toward the feed hopper. When the auxiliary ring moves, the connecting rod 1 connected to the auxiliary ring pushes the cleaning rod to fit the inner wall of the screening cylinder. After that, as the rotating shaft 2 and the screening cylinder rotate in opposite directions, the cleaning block connected to the cleaning rod can clean the inner wall of the screening cylinder. Compared with the existing method of directly wiping and cleaning the inside of the screening cylinder, the rotating cleaning block can It can more thoroughly clean the debris, tea juice, etc. adhered to the inner wall of the screening cylinder to ensure that there are no residual stains. At the same time, the cleaning block has the same cleaning force on each area when cleaning the screening cylinder, which can avoid incomplete cleaning or excessive wear of certain areas inside the screening cylinder due to uneven wiping force. At the same time, it can avoid some tea debris, tea juice, etc. remaining in the screening cylinder during screening and mixing with new tea during the next screening, causing cross contamination, ensuring the quality and sanitary safety of each batch of screened tea, and avoiding corrosion to the inner wall of the screening cylinder caused by the accumulation of dirt and residues inside the screening cylinder. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is a schematic diagram of the main structure of the present invention;
[0026] Figure 2 It is a schematic diagram of the cutaway structure of the main body of the present invention;
[0027] Figure 3 This is a schematic diagram of the three-dimensional structure of the feed hopper of the present invention in a cutaway top view;
[0028] Figure 4 For the present invention Figure 3 A is a schematic diagram of the enlarged structure of the middle part;
[0029] Figure 5 It is a schematic diagram of the cutaway structure of the feed hopper of the present invention;
[0030] Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure of B;
[0031] Figure 7 For the present invention Figure 5 Schematic diagram of the enlarged structure of C;
[0032] Figure 8 For the present invention Figure 5 Schematic diagram of the enlarged structure of D in the middle;
[0033] Fig. 9 It is a schematic diagram of the cutaway structure of the screening cylinder of the present invention.
[0034] The numbers in the figure represent:
[0035] 1. Fixed frame; 2. Feed hopper; 3. Screening cylinder; 4. Screening hole; 5. Discharge hopper; 6. Auxiliary rod 1; 7. Dispersion rod 1; 8. Auxiliary rod 2; 9. Auxiliary rod 3; 10. Dispersion rod 2; 11. Connecting column 1; 12. Rotating shaft 1; 13. Slide; 14. Gear 1; 15. Driving shaft; 16. Toothed disc; 17. Fixed block; 18. Spring 1; 19. Filter plate; 20. Pressing rod; 21. Rotating shaft 2; 22. Auxiliary block; 23. Sliding block; 24. Spring 2; 25. Auxiliary ring; 26. Connecting rod 1; 27. Cleaning rod; 28. Connecting rod 2; 29. Threaded groove; 30. Nut; 31. Gear 2; 32. Gear 3; 33. Meshing teeth. 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] refer to Figures 1 to 9A quantitative multi-stage tea screening device according to a preferred embodiment of the present invention will be described in detail below. A quantitative multi-stage tea screening device includes a fixed frame 1, a feed hopper 2 is fixedly connected to the upper surface of the fixed frame 1, a screening cylinder 3 for screening tea leaves is arranged on one side of the feed hopper 2, and a spiral blade is fixedly connected to the inner wall of the screening cylinder 3. When the driving shaft 15 drives the screening cylinder 3 to rotate through the rotating shaft 21, the spiral blade fixedly connected to the screening cylinder 3 is driven to rotate at the same time. When the spiral blade rotates, the tea leaves inside the screening cylinder 3 are pushed from the end of the screening cylinder 3 close to the feed hopper 2 to the end of the screening cylinder 3 away from the feed hopper 2, so that the tea leaves move evenly inside the screening cylinder 3;
[0038] The feed hopper 2 is connected to the screening cylinder 3, and the outer surface of the screening cylinder 3 is evenly penetrated with screening holes 4. The screening holes 4 are smaller in area near the feed hopper 2, and larger in area away from the feed hopper 2. A discharge hopper 5 is evenly fixedly connected to the upper surface of the fixed frame 1. The discharge hopper 5 is located directly below the screening cylinder 3. There are three discharge hoppers 5, which correspond to the positions of screening holes 4 of different sizes on the outer surface of the upper screening cylinder 3 respectively. The tea leaves are screened through the screening cylinders 3 of different areas, and then the screened tea leaves of different sizes are collected through different discharge hoppers 5.
[0039] The inner wall of the feed hopper 2 is fixedly connected with an auxiliary rod 6, and the side of the auxiliary rod 6 close to the vertical center line of the feed hopper 2 is evenly fixedly connected with a dispersion rod 7, and the upper surface of the dispersion rod 7 is evenly fixedly connected with an auxiliary rod 2 8. The inner wall of the feed hopper 2 and the side away from the auxiliary rod 6 are slidably connected with an auxiliary rod 3 9, and the side of the auxiliary rod 3 9 close to the vertical center line of the feed hopper 2 is evenly fixedly connected with a dispersion rod 2 10, and the side of the auxiliary rod 3 9 away from the dispersion rod 2 10 is fixedly connected with a connecting column 11. The side of the feed hopper 2 close to the auxiliary rod 3 9 is penetrated by a There is a straight slot, a connecting column 11 extends to the outside of the feed hopper 2 through the straight slot, the outer surface of the feed hopper 2 is rotatably connected with a rotating shaft 12, the outer surface of the rotating shaft 12 is provided with a slide groove 13, the end of the connecting column 11 extending to the outside of the feed hopper 2 is slidably connected to the inside of the slide groove 13, the bottom end of the rotating shaft 12 is fixedly connected with a gear 14, the upper surface of the fixed frame 1 is rotatably connected with a driving shaft 15, the driving shaft 15 is fixedly connected to the output shaft end of the motor, the outer surface of the driving shaft 15 is fixedly connected with a toothed disc 16, and the toothed disc 16 meshes with the gear 14.
[0040] The auxiliary rod 2 8 is set in an "X" shape that is not connected in the middle, and the outer surfaces of the dispersion rod 1 7, the auxiliary rod 2 8, and the dispersion rod 2 10 are all fitted with rubber pads to reduce mechanical damage to the tea leaves during dispersion.
[0041] The dispersion rod 1 7 and the dispersion rod 2 10 are symmetrically cross-arranged, and the height of the dispersion rod 2 10 close to the auxiliary rod 3 9 is higher than the height of the dispersion rod 2 10 away from the auxiliary rod 3 9, so that the tea leaves falling above the dispersion rod 2 10 slide to the top of the dispersion rod 1 7.
[0042] The slide groove 13 is composed of two arc grooves and two vertical grooves, and the two ends of the arc groove are connected through the vertical grooves.
[0043] A fixed block 17 is fixedly connected to the inner wall of the feed hopper 2, and the fixed block 17 is symmetrically arranged with reference to the vertical center line of the feed hopper 2. A spring 18 is fixedly connected to the lower surface of the fixed block 17, and a filter plate 19 is fixedly connected to the end of the spring 18 away from the fixed block 17. The filter plate 19 is inclined, and the height of the filter plate 19 away from the side of the screening cylinder 3 is higher than the height of the filter plate 19 close to the side of the screening cylinder 3. The filter plate 19 extends to the inside of the screening cylinder 3 through the connection between the feed hopper 2 and the screening cylinder 3, and filter holes are evenly penetrated on the surface of the filter plate 19. A pressing rod 20 is fixedly connected to the upper surface of the filter plate 19, and the top end of the pressing rod 20 penetrates the fixed block 17 and extends to above the fixed block 17, and the pressing rod 20 and the auxiliary rod 3 9 are located on the same vertical section.
[0044] The interior of the screening drum 3 is rotatably connected to a rotating shaft 21, both ends of the rotating shaft 21 extend to the outside of the screening drum 3, an eccentric block is fixedly connected to the outer surface of the rotating shaft 21, one end of the rotating shaft 21 close to the driving shaft 15 is slidably connected to the driving shaft 15, an auxiliary block 22 is fixedly connected to the upper surface of the fixed frame 1, a slider 23 is slidably connected to the interior of the auxiliary block 22, the slider 23 is fixedly connected to the rotating shaft 21, a spring 24 is fixedly connected to the interior of the auxiliary block 22, the spring 24 is fixedly connected to the slider 23, and the spring 24 is symmetrically distributed with respect to the horizontal center line of the slider 23, and the auxiliary block 22, the slider 23, and the spring 24 are symmetrically distributed with respect to the vertical center line of the rotating shaft 21.
[0045] An auxiliary ring 25 is slidably connected to the outer surface of the rotating shaft 21 located inside the screening drum 3, and a connecting rod 1 26 is rotatably connected to the outer surface of the auxiliary ring 25. A cleaning rod 27 is rotatably connected to the end of the connecting rod 1 26 away from the auxiliary ring 25. A cleaning block is detachably connected to the side of the cleaning rod 27 close to the inner wall of the screening drum 3, and the cleaning rod 27 can fit the inner wall of the screening drum 3. A connecting rod 28 is fixedly connected to the side of the auxiliary ring 25 close to the feed hopper 2. The connecting rod 1 26, the cleaning rod 27, and the connecting rod 28 are all distributed in a circular array with the center point of the rotating shaft 21 as a reference. A threaded groove 29 is provided on the outer surface of the rotating shaft 21 located inside the feed hopper 2. A nut 30 is threadedly connected to the threaded groove 29 on the outer surface of the rotating shaft 21, and the end of the connecting rod 28 away from the auxiliary ring 25 is rotatably connected to the nut 30.
[0046] The outer surface of the rotating shaft 21 which is away from the driving shaft 15 and extends to the outside of the screening drum 3 is fixedly connected with a gear 2 31, and the side of the screening drum 3 close to the gear 2 31 is rotatably connected with a gear 3 32, and the gear 3 32 is meshed with the gear 2 31. The side of the screening drum 3 close to the gear 2 31 is fixedly connected with a meshing tooth 33, and the meshing tooth 33 is meshed with the gear 3 32.
[0047] The following is the entire working process and working principle of the above embodiment:
[0048] Before use, the user turns on the switch of the motor, and the output shaft end of the motor drives the driving shaft 15 fixedly connected thereto to rotate synchronously.
[0049] When in use, first, the tea leaves to be screened are transported to the inside of the feed hopper 2 through the opening at the top of the feed hopper 2. After entering the inside of the feed hopper 2, the tea leaves to be screened fall onto the top of the dispersion rod 7. Among them, the non-adherent tea leaves can directly fall into the upper surface of the filter plate 19 below through the gap between the dispersion rod 1 7 and the dispersion rod 2 10 due to their smaller volume than the adhered tea leaves, while the adhered tea leaves will be intercepted by the dispersion rod 1 7.
[0050] Next, when the driving shaft 15 rotates, it drives the toothed disc 16 fixedly connected to the surface to rotate. When the toothed disc 16 rotates, it drives the gear 14 meshing therewith to rotate. When the gear 14 rotates, it drives the rotating shaft 12 fixedly connected to the gear 14 to rotate. When the rotating shaft 12 rotates, it drives the chute 13 provided on the surface of the rotating shaft 12 to rotate. When the chute 13 rotates, the push connecting column 11 slides inside the straight groove provided on the surface of the feed hopper 2. Since the chute 13 is composed of two arc grooves and two vertical grooves, and the two ends of the arc groove are connected through a vertical groove, respectively, The chute 13 pushes the connecting column 11 to slide up and down inside the straight groove opened on the surface of the feed hopper 2. When the connecting column 11 slides, it drives the dispersion rod 2 10 fixedly connected thereto to slide up and down inside the feed hopper 2 through the auxiliary rod 3 9. Since the dispersion rod 2 10 and the dispersion rod 1 7 are cross-arranged, the height of the dispersion rod 2 10 close to the auxiliary rod 3 9 is higher than the height of the dispersion rod 2 10 away from the auxiliary rod 3 9. Therefore, when the connecting column 11 drives the dispersion rod 2 10 to slide upward to the top of the dispersion rod 7 through the auxiliary rod 3 9, the particles to be screened and sticky above the dispersion rod 2 10 are The tea leaves that are stuck together slide to the top of the dispersion rod 17. Since the upper surface of the dispersion rod 17 is provided with an "X"-shaped auxiliary rod 28 that is not connected in the middle, the tea leaves that slide to the top of the dispersion rod 17 and stick together will not directly fall to the upper surface of the filter plate 19 below. When the connecting column 11 drives the dispersion rod 2 10 to slide downward again through the auxiliary rod 3 9, the lower end of the dispersion rod 2 10 first contacts the tea leaves stuck to the top of the dispersion rod 17, and the higher end contacts the tea leaves stuck to the top of the dispersion rod 17 later, so that the tea leaves stuck together on both sides of the dispersion rod 7 are subjected to force for a longer time. Different, and then it can be dispersed. After the screened tea leaves are dispersed, individual tea leaves can contact the screen more freely, reducing the possibility of tea leaves sticking and blocking the screening holes 4, thereby improving the screening efficiency, avoiding local screening unevenness caused by tea leaves sticking, and making the classification more accurate. Compared with the existing method of using mechanical stirring to disperse it, this dispersion method uses cross-distributed dispersion rods 2 10 and dispersion rods 1 7 to disperse it, which can reduce the mechanical damage to the tea leaves during dispersion, the loss of tea leaves caused, and reduce the tea residues in the final product;
[0051] Furthermore, after the dispersion rods 17 and 10 have dispersed the tea leaves to be screened in advance, the tea leaves to be screened fall onto the upper surface of the filter plate 19 below. When the connecting column 11 drives the auxiliary rod 3 9 to move downward to the pressing rod 20, the auxiliary rod 3 9 presses the filter plate 19 downward through the pressing rod 20, and the spring 18 connected to the filter plate 19 is stretched. At the same time, the spring 18 stores a certain elastic potential energy. When the connecting column 11 drives the auxiliary rod 3 9 to move upward, there is no external force pressing the filter plate 19 through the pressing rod 20. At this time, the elastic potential energy stored in the spring 18 is released, and then the spring 18 can drive the filter plate 19 to vibrate to a certain extent. Since the filter plate 19 is inclined, the height of the filter plate 19 away from the side of the screening drum 3 is higher than the height of the side of the filter plate 19 close to the screening drum 3. The filter plate 19 extends to the inside of the screening drum 3 through the connecting part between the feed hopper 2 and the screening drum 3. When the filter plate 19 is driven by the filter 8 to vibrate, the tea leaves dispersed by the dispersion rods 1 7 and the dispersion rods 2 10 can be transported to the inside of the screening cylinder 3 for screening. At the same time, since the filter plate 19 is evenly penetrated with filter holes, impurities such as tea branches, tea stems, soil and sand and gravel wrapped in the tea leaves can fall to the bottom of the filter plate 19 through the filter holes opened on the surface of the filter plate 19, so as to prevent these impurities from entering the screening cylinder 3 together with the tea leaves, so as to affect the taste, aroma and appearance of the finished tea leaves. After removing the impurities wrapped in the tea leaves, it is convenient to carry out subsequent processing of the tea leaves, such as rolling, drying, packaging, etc., to simplify the production process. At the same time, the blockage of the screening holes 4 and the wear of the screening cylinder 3 by hard impurities such as tea branches and sand and gravel is reduced, the service life of the screening equipment is extended, and the cost of maintaining and replacing the screening cylinder 3 is reduced. In addition, it also helps to ensure that the produced tea products meet food safety standards and protect the health of consumers.
[0052] Secondly, the smaller tea leaves among the tea leaves to be screened that are transported to the inside of the screening drum 3 through the filter plate 19 pass through the closest point to the feed hopper 2, and are screened through the screening holes 4 opened on the surface of the screening drum 3, and are collected through the outlet of the discharge hopper 5 directly below this point; the larger tea leaves pass through the farthest point from the feed hopper 2, and are screened through the screening holes 4 opened on the surface of the screening drum 3, and are collected through the outlet of the discharge hopper 5 directly below this point. The screened tea leaves are collected and transported to the next process via the automatic conveying system.
[0053] Again, when the driving shaft 15 rotates, it drives the second rotating shaft 21 connected thereto to rotate. When the second rotating shaft 21 rotates, the eccentric block fixedly connected to the second rotating shaft 21 generates centrifugal force, causing the second rotating shaft 21 to vibrate. Since the upper and lower ends of the slider 23 connected to the second rotating shaft 21 are fixedly connected to the second spring 24, and the slider 23 is slidably connected to the inside of the auxiliary block 22, the second rotating shaft 21 jumps up and down under the action of the centrifugal force. When the second rotating shaft 21 jumps up and down, it drives the sieving drum 3 connected thereto to jump up and down, thereby causing the tea leaves to be sieved inside the sieving drum 3 to vibrate. The sieving cylinder 3 bounces up and down inside to prevent the tea leaves to be sieved inside the sieving cylinder 3 from clogging the sieving holes 4. The tea leaves bounce up and down inside the sieving cylinder 3 so that they can flow and disperse better inside the sieving cylinder 3, avoiding tea clumping, so that the tea leaves can more effectively contact the sieving holes 4 on the surface of the sieving cylinder 3, reducing the possibility of tea leaves clogging the sieving holes 4, thereby improving the screening efficiency, and also avoiding the local uneven screening caused by the accumulation of tea leaves inside the sieving cylinder 3, making the grading more accurate, ensuring the consistency of the quality of each grade of tea leaves, thereby improving the quality of the final product;
[0054] Further, when the rotating shaft 21 rotates, it drives the gear 2 31 fixedly connected to the rotating shaft 21 to rotate synchronously. Since the gear 2 31 is meshed with the gear 3 32, and the gear 3 32 is meshed with the meshing teeth 33 fixedly connected to the screening drum 3, when the gear 2 31 rotates, the screening drum 3 and the rotating shaft 2 21 fixedly connected to the meshing teeth 33 are driven to rotate in opposite directions through the gear 3 32. At the same time, when the rotating shaft 21 rotates, it drives the connecting rod 1 26 connected to the rotating shaft 21 through the auxiliary ring 25 to rotate. When the connecting rod 1 26 rotates, it drives the cleaning rod 27 connected to the connecting rod 1 26 to rotate synchronously with the rotating shaft 21. The cleaning rod 27 and the screening cylinder 3 rotate in opposite directions, so that the cleaning rod 27 can stir the tea leaves being screened inside the screening cylinder 3, avoid the tea leaves to be screened inside the screening cylinder 3 from sticking together, and enable each tea leaf to contact the screening cylinder 3 more freely, thereby reducing the possibility of tea clumps blocking the screening holes 4, thereby improving the screening efficiency, and helping to ensure that the tea leaves are evenly distributed during the screening process, avoiding local uneven screening due to tea leaves sticking together, making the classification more accurate, and at the same time avoiding the clogging of the screening holes 4 due to tea leaves sticking together, affecting the screening process, and maintaining the continuity and smoothness of the screening process.
[0055] Finally, after the tea leaves inside the screening cylinder 3 are screened, the user rotates the nut 30 counterclockwise. When the nut 30 rotates counterclockwise, it moves in the direction away from the screening cylinder 3. When the nut 30 moves, it drives the auxiliary ring 25 fixedly connected to the connecting rod 28 to move in the direction close to the feed hopper 2 through the connecting rod 28. Since the auxiliary ring 25 is rotatably connected to the cleaning rod 27 through the connecting rod 1 26, when the auxiliary ring 25 moves, the connecting rod 1 26 connected to the auxiliary ring 25 pushes the cleaning rod 27 to fit the inner wall of the screening cylinder 3. Afterwards, as the rotating shaft 21 drives the cleaning rod 27 and the screening cylinder 3 to rotate in the opposite direction through the connecting rod 1 26, the cleaning block connected to the cleaning rod 27 can clean the inner wall of the screening cylinder 3. Compared with the existing method of directly wiping and cleaning the inside of the screening cylinder 3, the rotating cleaning block can more thoroughly clean the debris, tea juice, etc. adhered to the inner wall of the screening cylinder 3 to ensure that there are no residual stains. At the same time, the cleaning block has the same cleaning force on each area when cleaning the screening cylinder 3, which can avoid incomplete cleaning or excessive wear of certain areas inside the screening cylinder 3 due to uneven wiping force. At the same time, it can avoid some tea debris, tea juice, etc. remaining in the screening cylinder 3 during screening and mixing with new tea during the next screening, causing cross contamination, thereby ensuring the quality and sanitary safety of each batch of screened tea leaves, and also avoiding corrosion of the inner wall of the screening cylinder 3 caused by the accumulation of dirt and residues inside the screening cylinder 3.
[0056] 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. A quantitative multi-stage tea screening device, comprising a fixed frame (1), a feed hopper (2) is fixedly connected to the upper surface of the fixed frame (1), a screening cylinder (3) for screening tea leaves is arranged on one side of the feed hopper (2), the feed hopper (2) and the screening cylinder (3) are connected, the outer surface of the screening cylinder (3) is evenly penetrated with screening holes (4), the upper surface of the fixed frame (1) is evenly fixedly connected to a discharge hopper (5), the discharge hopper (5) is located directly below the screening cylinder (3), and is characterized in that: The inner wall of the feed hopper (2) is fixedly connected with an auxiliary rod 1 (6), and the side of the auxiliary rod 1 (6) close to the vertical center line of the feed hopper (2) is evenly fixedly connected with a dispersion rod 1 (7), and the upper surface of the dispersion rod 1 (7) is evenly fixedly connected with an auxiliary rod 2 (8). The inner wall of the feed hopper (2) and the side away from the auxiliary rod 1 (6) is slidably connected with an auxiliary rod 3 (9), and the side of the auxiliary rod 3 (9) close to the vertical center line of the feed hopper (2) is evenly fixedly connected with a dispersion rod 2 (10), and the side of the auxiliary rod 3 (9) away from the dispersion rod 2 (10) is fixedly connected with a connecting column 1 (11), and the side of the feed hopper (2) close to the auxiliary rod 3 ( A straight slot is formed on one side of the fixing frame (9), the connecting column (11) extends to the outside of the feed hopper (2) through the straight slot, the outer surface of the feed hopper (2) is rotatably connected to a rotating shaft (12), the outer surface of the rotating shaft (12) is provided with a slide groove (13), the end of the connecting column (11) extending to the outside of the feed hopper (2) is slidably connected to the inside of the slide groove (13), the bottom end of the rotating shaft (12) is fixedly connected to a gear (14), the upper surface of the fixing frame (1) is rotatably connected to a driving shaft (15), the outer surface of the driving shaft (15) is fixedly connected to a toothed disc (16), and the toothed disc (16) is meshed with the gear (14).
2. A quantitative multi-stage tea screening device according to claim 1, characterized in that: The auxiliary rod 2 (8) is arranged in an "X" shape without being connected in the middle, and the outer surfaces of the dispersion rod 1 (7), the auxiliary rod 2 (8) and the dispersion rod 2 (10) are all fitted with rubber pads.
3. A quantitative multi-stage tea screening device according to claim 1, characterized in that: The dispersion rod 1 (7) and the dispersion rod 2 (10) are symmetrically arranged in a cross-shaped manner, and the height of the dispersion rod 2 (10) close to the auxiliary rod 3 (9) is higher than the height of the dispersion rod 2 (10) away from the auxiliary rod 3 (9).
4. A quantitative multi-stage tea screening device according to claim 1, characterized in that: The sliding groove (13) is composed of two arc grooves and two vertical grooves, and the two ends of the arc groove are connected through the vertical grooves.
5. A quantitative multi-stage tea screening device according to claim 1, characterized in that: The inner wall of the feed hopper (2) is fixedly connected with a fixed block (17), and the fixed block (17) is symmetrically arranged with reference to the vertical center line of the feed hopper (2), and the lower surface of the fixed block (17) is fixedly connected with a spring one (18), and the end of the spring one (18) away from the fixed block (17) is fixedly connected with a filter plate (19), and the filter plate (19) is inclinedly arranged, and the height of the filter plate (19) away from the screening drum (3) is higher than the height of the filter plate (19) close to the screening drum (3), and the filter plate (19) extends to the inside of the screening drum (3) through the connection between the feed hopper (2) and the screening drum (3), and the upper surface of the filter plate (19) is fixedly connected with a pressing rod (20), and the top end of the pressing rod (20) passes through the fixed block (17) and extends to the top of the fixed block (17), and the pressing rod (20) and the auxiliary rod three (9) are located on the same vertical section.
6. A quantitative multi-stage tea screening device according to claim 1, characterized in that: The interior of the screening drum (3) is rotatably connected to a second rotating shaft (21), both ends of the second rotating shaft (21) extend to the outside of the screening drum (3), an eccentric block is fixedly connected to the outer surface of the second rotating shaft (21), one end of the second rotating shaft (21) close to the driving shaft (15) is slidably connected to the driving shaft (15), an auxiliary block (22) is fixedly connected to the upper surface of the fixed frame (1), a slider (23) is slidably connected to the interior of the auxiliary block (22), the slider (23) is fixedly connected to the second rotating shaft (21), a second spring (24) is fixedly connected to the interior of the auxiliary block (22), the second spring (24) is fixedly connected to the slider (23), and the second spring (24) is symmetrically distributed with reference to the horizontal center line of the slider (23), and the auxiliary block (22), the slider (23) and the second spring (24) are symmetrically distributed with reference to the vertical center line of the second rotating shaft (21).
7. A quantitative multi-stage tea screening device according to claim 6, characterized in that: The outer surface of the second rotating shaft (21) located inside the screening drum (3) is slidably connected to an auxiliary ring (25), the outer surface of the auxiliary ring (25) is rotatably connected to a connecting rod (26), the end of the connecting rod (26) away from the auxiliary ring (25) is rotatably connected to a cleaning rod (27), the cleaning rod (27) can fit the inner wall of the screening drum (3), the auxiliary ring (25) is fixedly connected to a connecting rod (28) on the side close to the feed hopper (2), the connecting rod (26), the cleaning rod (27) and the connecting rod (28) are all distributed in a circular array with the center point of the second rotating shaft (21) as a reference, the outer surface of the second rotating shaft (21) located inside the feed hopper (2) is provided with a thread groove (29), the outer surface of the second rotating shaft (21) is threadedly connected to a nut (30), and the end of the second connecting rod (28) away from the auxiliary ring (25) is rotatably connected to the nut (30).
8. A quantitative multi-stage tea screening device according to claim 6, characterized in that: The outer surface of the second rotating shaft (21) which is away from the driving shaft (15) and extends to the outside of the screening drum (3) is fixedly connected to the second gear (31); the side of the screening drum (3) close to the second gear (31) is rotatably connected to the third gear (32); the third gear (32) is meshed with the second gear (31); the side of the screening drum (3) close to the second gear (31) is fixedly connected to the meshing teeth (33); the meshing teeth (33) are meshed with the third gear (32).
Citation Information
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CN120268652A