Raw material screening device for tea processing

Abstract

The utility model relates to the field of tea screening, and discloses a raw material screening device for tea processing, which comprises a screening box, the screening box is provided with a first-stage screen and a second-stage screen which are used for screening tea in a grading manner, and the first-stage screen is located above the second-stage screen; the first-stage screen and the second-stage screen are provided with two straight row brushes, two thorn brushes and a moving assembly, the straight row brushes and the thorn brushes are used for cleaning meshes, the moving assembly drives the straight row brushes and the thorn brushes to move, and the straight row brushes are located above the thorn brushes. The straight row brushes and the thorn brushes which are used for cleaning the meshes are arranged on the first-stage screen and the second-stage screen correspondingly, the moving assembly is started to enable the two sets of straight row brushes and thorn brushes to move together, meanwhile, the meshes of the first-stage screen and the second-stage screen are cleaned, the straight row brushes are located above the thorn brushes, and when the straight row brushes and the thorn brushes move, the straight row brushes and the thorn brushes move, and therefore the meshes of the first-stage screen and the second-stage screen are cleaned. The straight row brush is used for cleaning the surface of the screen, the thorn brush is used for cleaning holes of the screen, the risk of screen blockage can be reduced to the maximum extent through cooperation of the straight row brush and the thorn brush, and continuity and high efficiency of the screening process are kept.

Description

Technical Field

[0001] This application relates to the field of tea screening, and in particular to a raw material screening device for tea processing. Background Art

[0002] Tea screening is a crucial link in tea processing, which has multiple significances in aspects such as improving tea quality, ensuring product uniformity, increasing economic value, and meeting market demands. Tea screening is mainly to classify tea according to physical characteristics such as shape, size, and weight, so as to make the subsequent processing process more accurate and efficient. When screening tea, the linear tea screening machine has been widely used in the tea processing industry due to its unique design and high efficiency;

[0003] When the existing linear tea screening machine screens tea, the screen holes of the sieve mesh will be blocked due to the influence of tea leaves and the dryness and wetness of tea. The blockage of the screen holes of the sieve mesh will reduce the screening efficiency, affect the accuracy of tea grading, and increase the maintenance cost. To solve the above problems, a raw material screening device for tea processing is proposed herein.

[0004] The above information disclosed in this background art is only used to increase the understanding of the background art of this application. Therefore, it may include prior art that is not known to those of ordinary skill in the art. Utility Model Content

[0005] To solve the problem of tea screening, this application provides a raw material screening device for tea processing.

[0006] The raw material screening device for tea processing provided by this application adopts the following technical solutions:

[0007] A raw material screening device for tea processing includes a screening box. An upper-stage sieve mesh and a lower-stage sieve mesh for grading and screening tea are provided on the screening box. The upper-stage sieve mesh is located above the lower-stage sieve mesh. Straight brushes and barbed brushes for cleaning the mesh holes are provided on the upper-stage sieve mesh and the lower-stage sieve mesh. The straight brushes are located above the barbed brushes, and there are two straight brushes and two barbed brushes respectively;

[0008] A moving component that can drive the two straight brushes and barbed brushes to move simultaneously is provided between the upper-stage sieve mesh and the lower-stage sieve mesh.

[0009] Preferably, a fastening bolt I for fixing the feed inlet is provided on the screening box. A baffle is provided at the bottom of the feed inlet. The baffle is inclined. A spring I is provided between the bottom of the baffle and the inner wall of the screening box.

[0010] Preferably, the moving component includes a connecting block, a guide rod, a lead screw, and a motor. The connecting block is located between the primary screen and the secondary screen. The guide rod and the motor are fixed on the screen box. The end of the rotor of the motor is fixed to the lead screw. The lead screw rotates on the screen box. The connecting block is threadedly connected to the lead screw and is in clearance fit with the guide rod.

[0011] Preferably, four second springs are provided at the bottom of the screen box. Adjustable support legs are provided at the bottoms of two of the second springs, and support legs are provided at the bottoms of the other two second springs.

[0012] Preferably, the adjustable support leg includes a threaded cylinder, a threaded post, and a connecting plate. The top of the connecting plate is fixedly connected to the bottom end of the second spring. The bottom of the connecting plate is fixed with a threaded cylinder and a threaded post. The threaded cylinder is provided with internal threads, and the outside of the threaded post is provided with external threads. The threaded cylinder and the threaded post are threadedly connected.

[0013] Preferably, a discharge port is provided on the screen box.

[0014] Preferably, second fastening bolts are provided on the screen box.

[0015] In summary, compared with the related art, the present utility model has the following beneficial effects:

[0016] By providing straight brushes and barbed brushes for cleaning the mesh holes on both the primary screen and the secondary screen, starting the moving component causes the two groups of straight brushes and barbed brushes to move together, simultaneously cleaning the mesh holes of the primary screen and the secondary screen. The straight brush is located above the barbed brush. Compared with the related art, when the straight brush and the barbed brush move, the straight brush is responsible for cleaning the surface of the screen, and the barbed brush is responsible for cleaning the pores of the screen. The cooperation of the two can minimize the risk of screen blockage and maintain the continuity and efficiency of the screening process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a front sectional structural view of an embodiment of the application;

[0018] Figure 2 is an overall structural view of an embodiment of the application;

[0019] Figure 3 is a structural view of the screen of an embodiment of the application;

[0020] Figure 4 is a structural view of the adjustable support leg of an embodiment of the application.

[0021] Description of reference numerals: 1. Sieve box; 2. Primary sieve mesh; 3. Secondary sieve mesh; 4. Straight brush; 5. Spiked brush; 6. Connecting block; 7. Guide rod; 8. Lead screw; 9. Motor; 10. Feed inlet; 11. Baffle; 12. First spring; 13. Adjustable support leg; 131. Threaded cylinder; 132. Threaded post; 133. Connecting plate; 14. Second spring; 15. Support leg; 16. Discharge outlet; 17. First fastening bolt; 18. Second fastening bolt. Detailed implementation mode

[0022] The following further elaborates on this application Figures 1-4 in conjunction with the attached drawings.

[0023] The embodiment of this application discloses a raw material screening device for tea processing. Refer to Figures 1-4 , a raw material screening device for tea processing, including a sieve box 1, on which there are a primary sieve mesh 2 and a secondary sieve mesh 3 for grading and screening tea. The primary sieve mesh 2 is located above the secondary sieve mesh 3. There are a straight brush 4 and a spiked brush 5 for cleaning the mesh holes on the primary sieve mesh 2 and the secondary sieve mesh 3. The straight brush 4 is located above the spiked brush 5, and both the straight brush 4 and the spiked brush 5 have two.

[0024] There is a moving component between the primary sieve mesh 2 and the secondary sieve mesh 3 that can drive the two straight brushes 4 and the spiked brushes 5 to move simultaneously.

[0025] It should be noted that there is also a vibration motor (not shown in the figure) on the sieve box 1 for vibrating the sieve box 1. The model of the vibration motor can refer to the YZO-10-6 vibration motor.

[0026] It should be further noted that the two straight brushes 4 are respectively located above the primary sieve mesh 2 and the secondary sieve mesh 3. Their soft and dense bristles can fully cover the surface of the sieve mesh, effectively sweeping away tea powder, debris, and light impurities, keeping the surfaces of the primary sieve mesh 2 and the secondary sieve mesh 3 clean, ensuring that tea particles can smoothly pass through the sieve holes without being blocked by surface impurities. The two spiked brushes 5 are respectively located below the primary sieve mesh 2 and the secondary sieve mesh 3, and can penetrate into the pores of the sieve mesh, effectively removing tea fragments, fibers, or other residues that are difficult to remove stuck in the holes, preventing these substances from accumulating and blocking the sieve holes, and maintaining the screening efficiency. The bristles of the spiked brush 5 can be made of rubber material to reduce damage to the sieve mesh and tea.

[0027] It should be noted again that the spiked brush 5 rotates on the straight brush 4. The primary sieve mesh 2 and the secondary sieve mesh 3 are located between the straight brush 4 and the spiked brush 5 and are in clearance fit with the straight brush 4 and the spiked brush 5. The aperture of the primary sieve mesh 2 is larger than that of the secondary sieve mesh 3.

[0028] By adopting the above technical solution, when it is necessary to clean the surfaces of multiple screening meshes, the moving component is activated to move the two straight brushes 4 and the thorn brush 5 together. The straight brush 4 is used to clean the surface of the screen, and the thorn brush 5 is used to clean the pores of the screen. The cooperation of the two can minimize the risk of screen blockage and maintain the continuity and efficiency of the screening process.

[0029] Referring to Figure 1 , a first fastening bolt 17 for fixing the feed inlet 10 is provided on the screen box 1. A baffle 11 is provided at the bottom of the feed inlet 10. The baffle 11 is inclined. A first spring 12 is provided between the bottom of the baffle 11 and the inner wall of the screen box 1; it should be noted that the inclined direction of the baffle 11 is inclined downward from the side where the baffle 11 rotates with the feed inlet 10, and one end of the first spring 12 is connected to the lower side of the baffle 11;

[0030] It should be further noted that the first spring 12 is located below the baffle 11, and the baffle 11 is inclined, so the situation where tea leaves are stuck on the first spring 12 will not occur. At the same time, the selection standard of the first spring 12 can refer to that the elastic coefficient can maintain a slight swing of the baffle 11 when the tea leaves fall;

[0031] By adopting the above technical solution, the first fastening bolt 17 thread-fixes the feed inlet 10 on the screen box 1 through the support plate. The inclined baffle 11 can play a buffering role when the tea leaves to be screened enter the screen box 1. At the same time, under the elastic action of the first spring 12, the baffle 11 will have a slight up and down swing when the tea leaves fall, which can accelerate the feeding and avoid blockage.

[0032] Referring to Figure 1 , the moving component includes a connecting block 6, a guide rod 7, a lead screw 8, and a motor 9. The connecting block 6 is located between the primary screen 2 and the secondary screen 3. The guide rod 7 and the motor 9 are fixed on the screen box 1. The rotor end of the motor 9 is fixed to the lead screw 8. The lead screw 8 rotates on the screen box 1. The connecting block 6 is threadedly connected to the lead screw 8, and the connecting block 6 is in clearance fit with the guide rod 7;

[0033] It should be noted that two chutes are provided on the screen box 1. A lead screw 8 is rotatably provided in one chute, and a guide rod 7 is fixedly provided in the other chute;

[0034] By adopting the above technical solution, the motor 9 is activated to rotate the lead screw 8. Under the guiding action of the guide rod 7, the connecting block 6 drives the two straight brushes 4 and the thorn brush 5 to move together, thereby cleaning the mesh holes of the surfaces of the primary screen 2 and the secondary screen 3.

[0035] Referring to Figure 2 , four second springs 14 are provided at the bottom of the screen box 1. Adjustable support legs 13 are provided at the bottoms of two of the second springs 14, and support legs 15 are provided at the bottoms of the other two second springs 14;

[0036] By adopting the above technical solution, when the vibrating motor drives the vibrating screen box 1, the second spring 14 plays a role in enhancing the vibration amplitude of the screen box 1, thereby improving the screening efficiency of the first-stage screen mesh 2 and the second-stage screen mesh 3. The height of the support leg 15 is fixed, and the inclination angle of the screen box 1 can be adjusted according to the screening requirements by adjusting the height of the adjustable support leg 13.

[0037] Refer to Figure 4 , the adjustable support leg 13 includes a threaded barrel 131, a threaded column 132, and a connecting plate 133. The top of the connecting plate 133 is fixedly connected to the bottom end of the second spring 14. The bottom of the connecting plate 133 is fixed with a threaded barrel 131 and a threaded column 132. The threaded barrel 131 is provided with internal threads, and the outer surface of the threaded column 132 is provided with external threads. The threaded barrel 131 and the threaded column 132 are threadedly connected;

[0038] By adopting the above technical solution, when the height of the support leg 13 needs to be adjusted, the threaded column 132 can be screwed out of the threaded barrel 131 to the required length. The connecting plate 133 is used to connect the second spring 14 and the threaded barrel 131 to make the support structure more stable.

[0039] Refer to Figure 1 , the screen box 1 is provided with a discharge port 16; by adopting the above technical solution, there are three discharge ports 16, which are respectively used for discharging the screening products of the first-stage screen mesh 2, the second-stage screen mesh 3, and the bottom of the screen box 1. The first-stage screen mesh 2 screens out the tea leaves with larger leaves, the second-stage screen mesh 3 screens out the tea leaves with smaller leaves, and the bottom of the screen box 1 screens out the tea powder, debris, and light impurities of the tea leaves.

[0040] Refer to Figure 2 , the screen box 1 is provided with a second fastening bolt 18; it should be noted that the second fastening bolt 18 is threadedly arranged on the screen box 1; by adopting the above technical solution, the second fastening bolt 18 is used to fix the first-stage screen mesh 2 and the second-stage screen mesh 3 on the screen box 1 to maintain the screening stability of the first-stage screen mesh 2 and the second-stage screen mesh 3.

[0041] The implementation principle of the raw material screening device for tea processing in the embodiment of the present application is as follows: during use, start the vibrating motor to vibrate the screen box 1, put the tea leaves to be screened into the feed port 10, and the tea leaves evenly fall onto the first-stage screen mesh 2 through the buffering of the baffle 11. The first-stage screen mesh 2 screens out the tea leaves with larger leaves, the second-stage screen mesh 3 screens out the tea leaves with smaller leaves, and the bottom of the screen box 1 screens out the tea powder, debris, and light impurities of the tea leaves. When the mesh holes on the surfaces of the first-stage screen mesh 2 and the second-stage screen mesh 3 are blocked, start the motor 9 to rotate the lead screw 8, and under the guiding action of the guide rod 7, the connecting block 6 drives the two straight row brushes 4 and the thorn brush 5 to move together, thereby cleaning the mesh holes on the surfaces of the first-stage screen mesh 2 and the second-stage screen mesh 3 to maintain the continuity and high efficiency of the screening process.

[0042] The following points should be noted: First, in the description of this application, it should be noted that unless otherwise specified and defined, the terms "installed", "connected", and "linked" should be understood in a broad sense. It can be a mechanical connection or an electrical connection, or it can be the communication inside two components. It can be directly connected. The terms "upper", "lower", "left", "right", etc. are only used to represent relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0043] Second, in the drawings of the disclosed embodiments of the present utility model, only the structures related to the disclosed embodiments are involved. For other structures, reference can be made to the usual designs. Without conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0044] Finally, the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

[0045] The above are all the preferred embodiments of this application and do not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A raw material screening device for tea processing, comprising a screening box (1), characterized in that: The screen box (1) is provided with a primary screen (2) and a secondary screen (3) for grading and screening tea leaves, the primary screen (2) being located above the secondary screen (3), and the primary screen (2) and the secondary screen (3) are provided with a straight brush (4) and a thorn brush (5) for cleaning meshes, the straight brush (4) being located above the thorn brush (5), and there are two straight brushes (4) and two thorn brushes (5); A moving component capable of driving the two straight brushes (4) and the thorn brush (5) to move simultaneously is provided between the primary screen (2) and the secondary screen (3).

2. A raw material screening device for tea processing according to claim 1, characterized in that: The screen box (1) is provided with a fixing bolt (17) for fixing the feed port (10), and a baffle (11) is provided at the bottom of the feed port (10). The baffle (11) is arranged at an angle, and a spring (12) is provided between the bottom of the baffle (11) and the inner wall of the screen box (1).

3. A raw material screening device for tea processing according to claim 1, characterized in that: The moving assembly comprises a connecting block (6), a guide rod (7), a screw rod (8), and a motor (9); the connecting block (6) is located between the primary screen (2) and the secondary screen (3); the guide rod (7) and the motor (9) are fixed on the screen box (1); the rotor end of the motor (9) is fixed to the screw rod (8); the screw rod (8) rotates on the screen box (1); the connecting block (6) is threadedly connected to the screw rod (8); and the connecting block (6) and the guide rod (7) are clearance-matched.

4. A raw material screening device for tea processing according to claim 1, characterized in that: The bottom of the screen box (1) is provided with four springs (14), wherein the bottoms of two of the springs (14) are provided with adjustable supporting legs (13), and the bottoms of the other two of the springs (14) are provided with supporting legs (15).

5. A raw material screening device for tea processing according to claim 4, characterized in that: The adjustable supporting leg (13) comprises a threaded barrel (131), a threaded column (132), and a connecting plate (133); the top of the connecting plate (133) is fixedly connected to the bottom end of the second spring (14); the bottom of the connecting plate (133) is fixed with the threaded barrel (131) and the threaded column (132); the threaded barrel (131) is provided with an internal thread, the threaded column (132) is provided with an external thread, and the threaded barrel (131) and the threaded column (132) are threadedly connected.

6. A raw material screening device for tea processing according to claim 1, characterized in that: The screen box (1) is provided with a discharge port (16).

7. A raw material screening device for tea processing according to claim 1, characterized in that: The screen box (1) is provided with two fastening bolts (18).

Images