Screening equipment for green tea picking

Abstract

The utility model discloses screening equipment for green tea picking, and relates to the technical field of green tea processing. The device comprises a water tank, a first screening frame and a second screening frame which are detachably connected are arranged in the water tank in a sliding mode, the diameter of screening holes of the first screening frame is larger than that of screening holes of the second screening frame, and the first screening frame is provided with two U-shaped positioning rods which abut against and are in lap joint with the water tank; a driving rack is arranged on the positioning rod, two driving rods are rotationally arranged on the water tank, and a missing gear meshed with the driving rack is arranged on each driving rod. The mode of screening through a vibrating screen or a roller in the prior art is abandoned, in the process of screening the picked green tea into shoot tips and shoot leaves, the risk that the green tea is damaged due to collision can be reduced, the quality of the green tea is guaranteed, the screening effect is improved, meanwhile, the picked green tea can be cleaned, and the green tea quality is improved. And green tea, dust, silt and other impurities are indirectly screened, and therefore the practicability is higher.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of green tea processing, and particularly relates to a screening device for picking green tea. BACKGROUND

[0002] Green tea is a shrub or small arbor plant of the Camellia genus of the Theaceae family, has a natural shape and fresh green color, is made of new leaves or buds of tea trees through processes such as fixation, shaping and drying, and retains natural substances of fresh leaves. After picking, green tea needs to be cleaned and classified into ordinary green tea and high-quality green tea (i.e. bud tips) through a screening device.

[0003] Most of the existing screening devices screen through a vibrating screen or a roller. During the movement, green tea is prone to damage due to collision, which not only affects the quality of green tea but also affects the screening effect. Therefore, the screening device for picking green tea is provided. CONTENT OF THE UTILITY MODEL

[0004] The application aims to solve the technical problem that most of the existing screening devices screen through a vibrating screen or a roller, green tea is prone to damage due to collision during the movement, which not only affects the quality of green tea but also affects the screening effect. The application provides a screening device for picking green tea.

[0005] In order to achieve the above-mentioned purpose, the application specifically adopts the following technical scheme:

[0006] The screening device for picking green tea comprises a water tank, a first screening frame and a second screening frame which are detachably connected and are slidably arranged in the water tank, the screen hole diameter of the first screening frame is larger than that of the second screening frame, two positioning rods which are both configured in a U shape and are lapped with the water tank are arranged on the first screening frame, a driving rack is arranged on the positioning rod, two driving rods are rotatably arranged on the water tank, a missing gear which is engaged with the driving rack is arranged on the driving rod, and a driving member for driving the two driving rods to synchronously and reversely rotate is arranged on the water tank.

[0007] Further, two slide rods are slidably arranged on the water tank, a buffer spring is arranged between the slide rod and the water tank, and the positioning rod is lapped with the slide rod.

[0008] Further, the driving member comprises two rotating rods which are rotatably arranged on the water tank, the two rotating rods are drivingly connected through a gear pair, and the rotating rod and the driving rod are drivingly connected through a belt pulley assembly.

[0009] Further, an annular groove is configured on the first screening frame, an annular convex strip which is insertedly matched with the annular groove is arranged on the second screening frame, and the annular convex strip and the first screening frame are connected through a plurality of bolts.

[0010] Further, a filter box is communicated with the water tank, a filter frame is slidably arranged in the filter box, and a conveying member is arranged on the water tank and used to convey water in the water tank into the filter box.

[0011] Further, the conveying member comprises a fixed cylinder arranged on the water tank, a piston rod is slidably arranged in the fixed cylinder, a water inlet pipe and a water outlet pipe are communicated with the fixed cylinder, a one-way valve is arranged on each of the water inlet pipe and the water outlet pipe and the two one-way valves are opposite in the direction of conduction, a free end of the water inlet pipe is communicated with the water tank, and a free end of the water outlet pipe is communicated with the filter box.

[0012] Further, one of the rotating rods is linked with the piston rod through a linkage, and the piston rod is driven to reciprocatingly slide by the linkage during rotation of the rotating rod.

[0013] Further, the linkage comprises a fixed rod arranged on the rotating rod, a connecting rod is hingedly connected to a free end of the fixed rod, and a free end of the connecting rod is hingedly connected with the piston rod.

[0014] The application has the following advantages:

[0015] The application discards the screening method by vibration screen or roller in the prior art, and can reduce the risk of damage of green tea due to collision, protect the quality of green tea, improve the screening effect, and clean the picked green tea, thereby indirectly screening the green tea and impurities such as dust and silt, and thus the application is more practical. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural perspective view of the application;

[0017] Figure 2 is a perspective sectional view of the application;

[0018] Figure 3 is a partial structural perspective view of the application;

[0019] Figure 4 is an enlarged view of A in the application Figure 3

[0020] Figure 5 is an enlarged view of B in the application Figure 3

[0021] Figure 6 is a partial structural exploded perspective view of the application;

[0022] Figure 7 is another partial structural perspective view of the application;

[0023] Figure 8 is an enlarged view of C in the application Figure 7 ​​a perspective sectional view.

[0024] Fig. 1 is a water tank; Fig. 2 is a first screening frame; Fig. 3 is a second screening frame; Fig. 4 is a positioning rod; Fig. 5 is a driving rack; Fig. 6 is a driving rod; Fig. 7 is a missing tooth gear; Fig. 8 is a sliding rod; Fig. 9 is a buffer spring; Fig. 10 is a rotating rod; Fig. 11 is a gear pair; Fig. 12 is a pulley assembly; Fig. 13 is an annular groove; Fig. 14 is an annular ridge; Fig. 15 is a filter tank; Fig. 16 is a filter frame; Fig. 17 is a fixed cylinder; Fig. 18 is a piston rod; Fig. 19 is a water inlet pipe; Fig. 20 is a water outlet pipe; Fig. 21 is a check valve; Fig. 22 is a fixed rod; and Fig. 23 is a connecting rod. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application.

[0026] As Figures 1-6 shown, one embodiment of the present application provides a screening device for green tea picking, which comprises a water tank 1, the water tank 1 is in a vertical direction and the top is open, a first screening frame 2 and a second screening frame 3 are detachably connected and slidably arranged in the water tank 1, the first screening frame 2 and the second screening frame 3 are distributed above and below and both slide along the vertical direction, the screen hole diameter of the first screening frame 2 is larger than that of the second screening frame 3, two positioning rods 4 are arranged on the first screening frame 2 and are both configured in a U shape and abut and overlap the water tank 1, the positioning rods 4 are in a vertical direction and fixedly arranged on the first screening frame 2, the two positioning rods 4 are symmetrically distributed, a driving rack 5 is arranged on the positioning rod 4, the driving rack 5 is in a vertical direction and fixedly arranged on the positioning rod 4, the two driving racks 5 are symmetrically distributed, two driving rods 6 are rotatably arranged on the water tank 1, the two driving rods 6 are both in a horizontal direction and respectively located at opposite sides of the water tank 1, a missing tooth gear 7 is arranged on the driving rod 6 and engages with the driving rack 5, the missing tooth gear 7 is in a vertical direction and fixedly arranged on the driving rod 6, and a driving member for driving the two driving rods 6 to synchronously and reversely rotate is arranged on the water tank 1.

[0027] In the initial state, the first screening frame 2 and the second screening frame 3 are located in the water tank 1, the two positioning rods 4 are in contact with the water tank 1, the driving rack 5 is not engaged with the missing gear 7, and in use, water is added to the water tank 1 until the first screening frame 2 is submerged, and the picked green tea is poured into the first screening frame 2. The two driving rods 6 are driven by the driving member to rotate synchronously and reversely, the missing gear 7 is driven to rotate by the driving rod 6, the missing gear 7 is first engaged with the driving rack 5, and the driving rack 5, the positioning rod 4, the first screening frame 2 and the second screening frame 3 are driven to move upward, and then the teeth of the missing gear 7 are away from the driving rack 5. The driving rack 5, the positioning rod 4, the first screening frame 2 and the second screening frame 3 move downward due to gravity, and the process is repeated to realize the synchronous reciprocating sliding of the first screening frame 2 and the second screening frame 3, so that the green tea and water are in a flowing state. In this process, the bud tips pass through the screen holes on the first screening frame 2 and enter the second screening frame 3, and the leaves are retained in the first screening frame 2 to realize the screening of the green tea, which can reduce the risk of damage of the green tea due to collision. The dust and sand and other impurities attached to the green tea pass through the screen holes on the second screening frame 3 and are located at the bottom of the water tank 1. After the screening is completed, the teeth of the missing gear 7 are away from the driving rack 5, the two positioning rods 4 are lifted upward until the first screening frame 2 and the second screening frame 3 are away from the water tank 1, and then the first screening frame 2 and the second screening frame 3 are separated, and the leaves and bud tips in them are poured out.

[0028] In summary, the present application discards the screening method by vibration screen or drum in the prior art, which can reduce the risk of damage of the green tea due to collision during the screening of the picked green tea into bud tips and leaves, protect the quality of the green tea, improve the screening effect, and indirectly realize the screening of the green tea and dust and sand and other impurities by cleaning the picked green tea, so it is more practical.

[0029] As shown in Figure 4 In some embodiments, two slide rods 8 are slidably arranged on the water tank 1, the slide rods 8 slide in the horizontal direction along the vertical direction, the buffer springs 9 are arranged between the slide rods 8 and the water tank 1, the buffer springs 9 are in the vertical direction and are fixedly connected at both ends with the slide rods 8 and the water tank 1, and the positioning rods 4 are in contact with the slide rods 8.

[0030] As described above, in the initial state, the slide rods 8 are located at the limit position, the buffer springs 9 are compressed, and the positioning rods 4 are in contact with the slide rods 8. When the positioning rods 4 move upward, the buffer springs 9 return to the natural state, the slide rods 8 slide upward to the initial position, and when the positioning rods 4 move downward, the slide rods 8 are forced to slide downward and the buffer springs 9 are compressed. Through the elastic potential energy of the buffer springs 9, the buffering of the positioning rods 4 is realized, and the use stability is improved.

[0031] As shown in Figure 5As shown, in some embodiments, the driving component includes two rotating rods 10 that are rotatably mounted on the water tank 1. Both rotating rods 10 are horizontal and are connected by a gear pair 11. The gear pair 11 includes two meshing gears that are vertical and are respectively fixed on the two rotating rods 10. The rotating rods 10 and the driving rod 6 are connected by a pulley assembly 12. The pulley assembly 12 includes two pulleys and a connecting belt. The two pulleys are respectively fixed on the rotating rods 10 and the driving rod 6, and the connecting belt is wound around the two pulleys.

[0032] Referring to the above, in use, one of the rotating rods 10 is driven to rotate, which drives the other rotating rod 10 to rotate synchronously in the opposite direction through the gear pair 11. Then, the two drive rods 6 are driven to rotate through the two pulley assemblies 12 respectively, so as to drive the two drive rods 6 to rotate synchronously in the opposite direction. In actual use, a motor should be installed on the water tank 1 and the output shaft of the motor should be connected to one of the rotating rods 10. The rotating rod 10 is driven to rotate by the operation of the motor, which makes it more convenient to use.

[0033] like Figure 6 As shown, in some embodiments, the first screening frame 2 is provided with an annular groove 13, which is horizontal and located at the bottom of the first screening frame 2. The second screening frame 3 is provided with an annular protrusion 14 that is inserted into the annular groove 13. The annular protrusion 14 is horizontal and fixed at the top of the second screening frame 3. The annular protrusion 14 and the first screening frame 2 are connected by multiple bolts. The annular protrusion 14 is provided with multiple through holes, and the annular groove 13 is provided with multiple threaded holes. The free end of the bolt passes through the through hole and is threadedly engaged with the threaded hole.

[0034] Referring to the above, in the initial state, the bottom of the first screening frame 2 and the top of the second screening frame 3 abut against each other, and the annular protrusion 14 is correspondingly inserted into the annular groove 13. The annular protrusion 14 and the first screening frame 2 are connected by multiple bolts. After screening, the multiple bolts are loosened so that the bottom of the first screening frame 2 is away from the top of the second screening frame 3, and the annular protrusion 14 is disengaged from the annular groove 13, thus separating the first screening frame 2 and the second screening frame 3. Conversely, during installation, the bottom of the first screening frame 2 and the top of the second screening frame 3 abut against each other, and the annular protrusion 14 is correspondingly inserted into the annular groove 13. The annular protrusion 14 and the first screening frame 2 are connected by multiple bolts.

[0035] like Figures 5-8 As shown, in some embodiments, a filter box 15 is connected to the water tank 1. The filter box 15 is fixed on the water tank 1 and has an open top. A filter frame 16 is slidably disposed inside the filter box 15. The filter frame 16 slides in the vertical direction. A conveying component is provided on the water tank 1, which is used to convey the water in the water tank 1 to the filter box 15.

[0036] With reference to the foregoing, in use, water in the water tank 1 is delivered into the filter tank 15 by the delivery member, in the process, impurities such as dust and silt in the water are filtered by the filter frame 16, and the water in the filter tank 15 enters the water tank 1 to achieve a circulating flow of water, improve the flowability of the water, facilitate screening, and at the same time, impurities such as dust and silt in the water can be discharged. The filter frame 16 can be slid upward to be away from the filter tank 15 to facilitate pouring out of the impurities such as dust and silt, and at the same time, the filter frame 16 can be easily cleaned.

[0037] As shown in Figures 5-8 some embodiments, the delivery member includes a fixed cylinder 17 arranged on the water tank 1, the fixed cylinder 17 is vertically arranged and fixed on the water tank 1, a piston rod 18 is slidably arranged in the fixed cylinder 17, the piston rod 18 slides in the vertical direction, the fixed cylinder 17 is communicated with a water inlet pipe 19 and a water outlet pipe 20, the water inlet pipe 19 and the water outlet pipe 20 are both provided with a one-way valve 21 and the directions of conduction of the two are opposite, the free end of the water inlet pipe 19 is communicated with the water tank 1, the free end of the water outlet pipe 20 is communicated with the filter tank 15, the free end of the water inlet pipe 19 is communicated with the bottom of the water tank 1, and the communication position of the water outlet pipe 20 with the filter tank 15 is higher than the filter frame 16, so that the water in the water tank 1 can only enter the fixed cylinder 17 through the water inlet pipe 19, and the water in the fixed cylinder 17 can only be discharged through the water outlet pipe 20;

[0038] With reference to the foregoing, in the initial state, the piston rod 18 is located at the initial position, and there is no water in the fixed cylinder 17, in use, the piston rod 18 is driven to slide linearly back and forth, the piston rod 18 is first slid upward to the limit position, in the process, a negative pressure state is formed in the fixed cylinder 17, the water in the water tank 1 enters the fixed cylinder 17 through the water inlet pipe 19, then the piston rod 18 is slid downward to the initial position, in the process, the water in the fixed cylinder 17 enters the water outlet pipe 20 through the extrusion action, the water in the water outlet pipe 20 enters the filter tank 15, and the process is repeated to deliver the water in the water tank 1 into the filter tank 15.

[0039] As shown in Figure 5 some embodiments, one of the rotating rods 10 is linked with the piston rod 18 through a linkage, and the piston rod 18 is driven to slide back and forth by the linkage during the rotation of the rotating rod 10;

[0040] With reference to the foregoing, in use, the rotating rod 10 is used as a driving force to drive the piston rod 18 to slide back and forth through the linkage, which not only improves the synchronization of use, but also makes the use more convenient.

[0041] As shown in Figure 5As shown, in some embodiments, the linkage comprises a fixed rod 22 arranged on the rotating rod 10, the fixed rod 22 is fixed on the rotating rod 10 and vertically distributed, the free end of the fixed rod 22 is hingedly connected with a connecting rod 23, the free end of the connecting rod 23 is hingedly connected with the piston rod 18;

[0042] Referring to the above, when the rotating rod 10 rotates, the fixed rod 22 rotates together, the connecting rod 23 moves through the fixed rod 22, the connecting rod 23 repeatedly pulls or rubs the piston rod 18, so as to force the piston rod 18 to reciprocatingly slide.

[0043] The above description of disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A screening device for green tea picking, characterized in that, The system includes a water tank (1), in which a first screening frame (2) and a second screening frame (3) are slidably connected. The diameter of the screen hole of the first screening frame (2) is larger than that of the screen hole of the second screening frame (3). The first screening frame (2) is provided with two positioning rods (4) that are both U-shaped and abut against the water tank (1). The positioning rods (4) are provided with a drive rack (5). The water tank (1) is rotatably provided with two drive rods (6). The drive rods (6) are provided with a missing gear (7) that meshes with the drive rack (5). The water tank (1) is provided with a drive component for driving the two drive rods (6) to rotate synchronously in opposite directions.

2. The screening equipment for green tea picking according to claim 1, characterized in that, Two sliding rods (8) are slidably arranged on the water tank (1). A buffer spring (9) is provided between the sliding rod (8) and the water tank (1). The positioning rod (4) abuts against the sliding rod (8).

3. The screening equipment for green tea picking according to claim 1, characterized in that, The driving component includes two rotating rods (10) that are rotatably mounted on the water tank (1). The two rotating rods (10) are connected by a gear pair (11), and the rotating rods (10) are connected to the driving rod (6) by a pulley assembly (12).

4. The screening equipment for green tea picking according to claim 1, characterized in that, The first screening frame (2) has an annular groove (13) and the second screening frame (3) has an annular protrusion (14) that is inserted into the annular groove (13). The annular protrusion (14) is connected to the first screening frame (2) by multiple bolts.

5. The screening equipment for green tea picking according to claim 3, characterized in that, The water tank (1) is connected to a filter box (15), and a filter frame (16) is slidably arranged inside the filter box (15). The water tank (1) is provided with a conveying component, which is used to convey the water in the water tank (1) to the filter box (15).

6. The screening equipment for green tea picking according to claim 5, characterized in that, The conveying component includes a fixed cylinder (17) mounted on the water tank (1). A piston rod (18) is slidably mounted inside the fixed cylinder (17). An inlet pipe (19) and an outlet pipe (20) are connected to the fixed cylinder (17). A one-way valve (21) is mounted on both the inlet pipe (19) and the outlet pipe (20), and their conduction directions are opposite. The free end of the inlet pipe (19) is connected to the water tank (1), and the free end of the outlet pipe (20) is connected to the filter box (15).

7. The screening equipment for green tea picking according to claim 6, characterized in that, One of the rotating rods (10) is linked to the piston rod (18) through a linkage. When the rotating rod (10) rotates, it drives the piston rod (18) to slide back and forth through the linkage.

8. The screening equipment for green tea picking according to claim 7, characterized in that, The linkage includes a fixed rod (22) mounted on the rotating rod (10), and a connecting rod (23) is hinged to the free end of the fixed rod (22), and the free end of the connecting rod (23) is hinged to the piston rod (18).

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