Tea winnowing and grading device

Abstract

The utility model relates to the field of tea winnowing and grading, and discloses a tea winnowing and grading device which comprises a box body, a motor is installed on the box body, a hopper is arranged at the position of a feeding channel and stretches across the box body, a movable plate is hinged to the bottom end of the hopper, a first elastic piece is arranged between the movable plate and the hopper, and a second rotating shaft is rotationally arranged on the box body. The tea leaf screening device has the advantages that the hopper stretches across the box body, tea leaves can be transversely laid on the filter screen through the hopper, the tea leaves are prevented from being accumulated only on the filter screen, meanwhile, the first rotating shaft drives the second rotating shaft to rotate when rotating, the second rotating shaft drives the ejector rod to rotate, and therefore the tea leaves are not prone to falling off. The movable head on the ejector rod is in intermittent contact with the movable plate and drives the movable plate to rotate by a fixed angle with the third rotating shaft as the circle center, the movable plate is reset through the second elastic piece, and the tea leaves are prevented from being blocked below the hopper through continuous swinging and resetting, so that the tea leaves fall uniformly.

Description

Technical Field

[0001] The utility model relates to the technical field of tea wind selection and grading, in particular to a tea wind selection and grading device. Background Art

[0002] The tea grading and air separation device is a mechanical equipment used in tea processing. It separates tea leaves according to weight, size and density through wind force, thereby achieving tea grading. This equipment usually includes components such as an air separation box, a feeding mechanism, a fan, a filter, a discharge port and a screening mechanism. The fan generates airflow to make the tea leaves flow in the air separation box and be discharged through the filter. The tea leaves flow to different discharge ports according to their weight and density to achieve grading.

[0003] The Chinese utility model patent with authorization announcement number CN210753754U discloses a tea grading air separator, including an air separator body, a feed channel fixedly connected to the top of the air separator body, a first hinged seat connected to the inner wall of the body, a first filter screen hinged to the first hinged seat, a first discharge port is opened on the air separator body, a first spring is connected to the bottom of the first discharge port, the top of the first spring is fixedly connected to the bottom of the first filter screen, the air separator body is fixedly connected to a second hinged seat, and the second hinged seat is located at the bottom of the first hinged seat. However, when the prior art is implemented, tea leaves are poured into the feed channel and dropped onto the first filter screen. The tea leaves will be blocked at the feed channel and cannot be spread flat on the filter screen, resulting in uneven material discharge and reducing the filtering efficiency of the tea leaves. Utility Model Content

[0004] The utility model aims to provide a tea wind selection and grading device, which has the effect of evenly spreading the tea leaves.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions: a tea air selection and grading device, comprising a box body, a feed channel opened at the top of the box body, and a filter screen arranged below the feed channel, the box body is rotatably provided with a first rotating shaft, the box body is installed with a motor, the rotating shaft is provided with a shaking device, a hopper is provided at the feed channel, the hopper spans the box body, a movable plate is hinged at the bottom end of the hopper, a first elastic member is provided between the movable plate and the hopper, a second rotating shaft is rotatably provided with a push rod, the second rotating shaft drives the push rod to rotate, the movement trajectory of the push rod intersects with the movable plate, and the second rotating shaft is linked with the first rotating shaft.

[0006] By adopting the above technical solution, the hopper straddles the box body, the second rotating shaft is linked with the first rotating shaft, and during the rotation process, the end of the ejector rod contacts the movable plate and presses the movable plate by a certain angle. When the movable plate disengages from the ejector rod and under the action of the first elastic member, the movable plate resets. The repeated back-and-forth swinging will prevent the tea leaves at the hopper from being blocked, and can achieve the purpose of evenly spreading the tea leaves.

[0007] A further setting of the present utility model is that: the bottom end of the hopper is rotatably connected with a third rotating shaft, the movable plate is connected to the third rotating shaft, and the first elastic member is arranged between the third rotating shaft and the hopper.

[0008] A further setting of the present utility model is that: the first elastic member is set as a torsion spring.

[0009] By adopting the above technical solution, by setting the third rotating shaft, the movable plate rotates around the third rotating shaft. When the ejector rod drives the movable plate, the movable plate rotates by a certain angle. When the ejector rod disengages from the movable plate, the torsion spring needs to reset and drive the movable plate to return to its original position, and the purpose of automatically resetting the movable plate can be achieved.

[0010] A further setting of the present utility model is that: the second rotating shaft is vertically provided with a connection hole, the connection hole is threadedly connected with a locking screw, the locking screw penetrates through the connection hole, the ejector rod passes through the connection hole and penetrates through the second rotating shaft, and the ejector rod is provided with a plurality of positioning holes corresponding to the locking screw.

[0011] By adopting the above technical solution, by setting the locking screw, the connection hole and the positioning hole, according to the humidity and particle size of the tea leaves, the movable plate needs to have different swinging angles corresponding thereto. Therefore, the position of the ejector rod in the connection hole is adjusted and positioned by the locking screw.

[0012] A further setting of the present utility model is that: the end of the ejector rod is slidably connected with a movable head, and a second elastic member is connected between the movable head and the ejector rod.

[0013] A further setting of the present utility model is that: the end of the ejector rod is provided with a sliding cavity, both sides of the sliding cavity are provided with sliding grooves, the movable head is provided with sliders corresponding to the sliding grooves, and the sliders are embedded in the sliding grooves.

[0014] A further setting of the present utility model is that: the second elastic member is connected between the movable head and the sliding cavity, and the second elastic member is set as a spring.

[0015] By adopting the above technical solution, by providing a movable head which slides in a sliding cavity and under the action of a second elastic member, when the movable head contacts the movable plate, the second elastic member is compressed, and the purpose of damping between the ejector rod and the movable plate can be achieved, thereby preventing the situation that the tea leaves are shattered due to excessive vibration received by the movable plate.

[0016] A further setting of the present utility model is that: the second rotating shaft penetrates through the box body, a driving wheel is coaxially arranged at the end of the first rotating shaft, a driven wheel is coaxially arranged at the end of the second rotating shaft, and the driving wheel is connected to the driven wheel.

[0017] By adopting the above technical solution, by providing a driving wheel and a driven wheel, the purpose of linkage between the second rotating shaft and the first rotating shaft can be achieved.

[0018] A further setting of the present utility model is that: both the driving wheel and the driven wheel are provided as belt wheels and are connected by a belt.

[0019] A further setting of the present utility model is that: a bearing is provided between the box body and the second rotating shaft.

[0020] The beneficial effects of the present utility model are as follows: the hopper straddles the box body, and the tea leaves can be horizontally paved on the filter screen through the hopper, avoiding the accumulation of tea leaves only on the filter screen. At the same time, when the first rotating shaft rotates, it drives the second rotating shaft to rotate, the second rotating shaft drives the ejector rod to rotate, the movable head on the ejector rod intermittently contacts the movable plate and drives the movable plate to rotate a fixed angle around the third rotating shaft, and the movable plate is reset by the second elastic member. The continuous swinging and resetting prevent the tea leaves from clogging below the hopper, so that the tea leaves fall evenly. Compared with the prior art, the present utility model can uniformly feed the materials and spread them on the filter screen, improving the filtering efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0023] Figure 2 It is a schematic cross-sectional structure diagram of the present utility model.

[0024] Figure 3 It is a schematic diagram of a partial structure at the connection between the movable plate and the hopper of the present utility model.

[0025] Figure 4It is a schematic cross-sectional structure diagram of the connection between the ejector rod and the second rotating shaft of the present utility model.

[0026] In the figure, 1 is the box body; 11 is the feeding channel; 12 is the filter screen; 13 is the first rotating shaft; 131 is the shaking device; 132 is the driving wheel; 14 is the motor; 2 is the hopper; 21 is the third rotating shaft; 22 is the first elastic member; 23 is the movable plate; 3 is the second rotating shaft; 31 is the connecting hole; 311 is the locking screw; 32 is the driven wheel; 33 is the bearing; 4 is the ejector rod; 41 is the positioning hole; 42 is the movable head; 421 is the slider; 43 is the second elastic member; 44 is the sliding cavity; 441 is the sliding groove. Specific embodiments

[0027] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0028] Embodiment, a tea air separation and grading device, as Figures 1-4 shown, includes a box body 1. A feeding channel 11 is opened at the top of the box body 1. A filter screen 12 is arranged below the feeding channel 11 inside the box body 1. The box body 1 is rotatably connected with a first rotating shaft 13. The first rotating shaft 13 is provided with a shaking device 131. The box body 1 is provided with a motor 14. The output end of the motor 14 is connected to the first rotating shaft 13. A hopper 2 is arranged at the feeding channel 11 of the box body 1. The hopper 2 straddles the box body 1. The lower part of the hopper 2 is rotatably connected with a third rotating shaft 21. The third rotating shaft 21 is connected with a movable plate 23. A first elastic member 22 is connected between the third rotating shaft 21 and the hopper 2. The first elastic member 22 is set as a torsion spring. The box body 1 is rotatably connected with a second rotating shaft 3. A bearing 33 is arranged between the second rotating shaft 3 and the box body 1. A connecting hole 31 is vertically opened on the second rotating shaft 3. A tightening screw is threadedly connected at the connecting hole 31. The tightening screw penetrates through the connecting hole 31.

[0029] Furthermore, as Figures 1-4As shown, a ejector rod 4 is connected through the connection hole 31. A plurality of positioning holes 41 are provided in the ejector rod 4, and the positioning holes 41 correspond to the tightening screws. A sliding cavity 44 is provided at the end of the ejector rod 4. A movable head 42 is slidably connected in the sliding cavity 44. Slide grooves 441 are provided on both sides of the sliding cavity 44. Sliders 421 are provided on both sides of the movable head 42. The sliders 421 are embedded in the slide grooves 441. A second elastic member 43 is connected between the movable head 42 and the sliding cavity 44. The second elastic member 43 is provided as a spring. The second rotating shaft 3 penetrates through the box body 1. A driving wheel 132 is coaxially provided at the end of the first rotating shaft 13. A driven wheel 32 is coaxially provided at the end of the second rotating shaft 3. Both the driving wheel 132 and the driven wheel 32 are provided as belt wheels and are connected by a belt.

[0030] Its working principle is as follows: When the motor 14 is started, the first rotating shaft 13 drives the shaking device 131 to shake the filter screen 12. The tea leaves are poured into the hopper 2. The second rotating shaft 3 rotates under the drive of the first rotating shaft 13. The second rotating shaft 3 drives the ejector rod 4 to rotate around the second rotating shaft 3 as the center. During the rotation process, the ejector rod 4 intermittently contacts the movable plate 23. The movable plate 23 rotates a certain angle around the third rotating shaft 21 under the drive of the ejector rod 4. When the ejector rod 4 is separated from the movable plate 23, the movable plate 23 returns to its original position under the action of the first elastic member 22. The continuous rotation and reset can prevent the tea leaves from being blocked at the lower end of the hopper 2. The tea leaves discharged from the hopper 2 can be evenly spread on the filter screen 12, improving the filtering efficiency. When it is necessary to satisfy the swinging of the movable plate 23 at different angles, the locking screw 311 can be screwed out from the connection hole 31, and different positioning holes 41 can be selected to be connected with the locking screw 311 for positioning.

Claims

1. A tea leaf wind selection and grading device, comprising a box (1), a feed channel (11) opened at the top of the box (1), and a filter (12) arranged below the feed channel (11), the box (1) being rotatably provided with a first rotating shaft (13), the box (1) being equipped with a motor (14), and the first rotating shaft (13) being provided with a shaking device (131), characterized in that: A hopper (2) is provided at the feeding channel (11), the hopper (2) spans the box body (1), a movable plate (23) is hinged at the bottom end of the hopper (2), a first elastic member (22) is provided between the movable plate (23) and the hopper (2), a second rotating shaft (3) is rotatably provided on the box body (1), a push rod (4) is vertically provided on the second rotating shaft (3), the second rotating shaft (3) drives the push rod (4) to rotate, the movement trajectory of the push rod (4) intersects with the movable plate (23), and the second rotating shaft (3) is linked with the first rotating shaft (13).

2. A tea wind selection and grading device according to claim 1, characterized in that: The bottom end of the hopper (2) is rotatably connected to a third rotating shaft (21), the movable plate (23) is connected to the third rotating shaft (21), and the first elastic member (22) is arranged between the third rotating shaft (21) and the hopper (2).

3. A tea wind selection and grading device according to claim 2, characterized in that: The first elastic member (22) is configured as a torsion spring.

4. The tea leaf wind selection and grading device according to claim 1, characterized in that: The second rotating shaft (3) is vertically provided with a connecting hole (31), the connecting hole (31) is threadedly connected with a locking screw (311), the locking screw (311) passes through the connecting hole (31), the push rod (4) passes through the connecting hole (31) and passes through the second rotating shaft (3), the push rod (4) is provided with a plurality of positioning holes (41), the positioning holes (41) correspond to the locking screw (311).

5. A tea wind selection and grading device according to claim 4, characterized in that: The end of the push rod (4) is slidably connected to a movable head (42), and a second elastic member (43) is connected between the movable head (42) and the push rod (4).

6. A tea wind selection and grading device according to claim 5, characterized in that: The end of the push rod (4) is provided with a sliding cavity (44), and sliding grooves (441) are provided on both sides of the sliding cavity (44). The movable head (42) is provided with a sliding block (421) corresponding to the sliding groove (441), and the sliding block (421) is embedded in the sliding groove (441).

7. A tea leaf wind selection and grading device according to claim 6, characterized in that: The second elastic member (43) is connected between the movable head (42) and the sliding cavity (44), and the second elastic member (43) is configured as a spring.

8. The tea leaf wind selection and grading device according to claim 1, characterized in that: The second rotating shaft (3) passes through the box body (1); a driving wheel (132) is coaxially arranged at the end of the first rotating shaft (13); a driven wheel (32) is coaxially arranged at the end of the second rotating shaft (3); and the driving wheel (132) is connected to the driven wheel (32).

9. The tea leaf wind selection and grading device according to claim 8, characterized in that: The driving wheel (132) and the driven wheel (32) are both configured as pulleys and are connected via a belt.

10. The tea leaf wind selection and grading device according to claim 1, characterized in that: A bearing (33) is provided between the housing (1) and the second rotating shaft (3).

Images