Flat tea levelling and feeding device

Abstract

The utility model discloses a kind of flat tea leveling feeding device, including rack, the rack is provided with the sieve frame conveying chain of driving sieve frame to move forward, on the path of sieve frame conveying chain, setting back and forth moving pressure roller, still be provided with the supporting plate that can move up and down for supporting sieve frame screen, supporting plate is supported below sieve frame screen, pressure roller movement and supporting plate cooperation complete to the flattening of tea in sieve frame. Through the utility model can be while conveying tea to dry to realize tea leveling, and feeding efficiency is high, can be widely used in tea processing technical field.

Description

Technical Field

[0001] This utility model relates to the field of tea processing technology, specifically to a flat tea leveling and feeding device. Background Technology

[0002] After being pressed into shape, the flat tea leaves need to be neatly arranged on a drying sieve before being sent into an oven for drying. To ensure the flatness of the tea leaves, they need to be pressed and flattened again before entering the dryer to improve their flatness and prevent curling. To improve the convenience of continuous processing, a flattening and conveying device needs to be designed to automatically feed the tea leaves while simultaneously flattening them. Summary of the Invention

[0003] The purpose of this invention is to provide a flat tea leveling and feeding device, which can automatically feed tea leaves into the dryer and level the tea leaves at the same time.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a flat tea leveling and feeding device, including a frame, a screen frame conveyor chain that drives the screen frame to move forward, a pressure roller that moves back and forth on the path of the screen frame conveyor chain, and a support plate that can move up and down to support the screen screen. After the support plate is supported under the screen screen, the movement of the pressure roller and the support plate cooperate to complete the leveling of the tea leaves in the screen frame.

[0005] Specifically, the axis of the pressure roller is the same as or perpendicular to the conveying direction of the screen frame conveyor chain; the pressure roller is rotatably mounted on the swing arm, and the frame is provided with a swing arm lifting device that drives the swing arm to lift so that the pressure roller is higher than the screen frame on the screen frame conveyor chain; the frame is also provided with a sliding block that moves back and forth, and the swing arm is hinged to the sliding block.

[0006] To ensure the accuracy of the reciprocating movement of the pressure roller, a drive screw is provided on the frame. The slider is threadedly engaged with the drive screw, and the rotation of the drive screw drives the slider to move back and forth.

[0007] Preferably, the swing arm lifting device includes two support blocks mounted on the frame and rollers mounted on the support blocks.

[0008] Preferably, a lifting cylinder is provided below the pallet on the frame, and a lifting bracket is connected to the lifting cylinder, which is supported below the pallet.

[0009] To achieve automatic feeding and arrangement of tea leaves on the sieve frame, a feeding conveyor belt is also provided above the frame, and a set of push plates is also provided to push the tea leaves off the feeding conveyor belt. The push plates are fixedly installed on the push plate crossbeam, and a rack is provided on the push plate crossbeam. A rack drive motor is provided on the frame, and a gear that meshes with the rack is provided on the output shaft of the rack drive motor.

[0010] To ensure the neatness of the arrangement, the feeding conveyor belt is set perpendicular to or parallel to the screen frame conveyor chain; each feeding conveyor belt is provided with a left discharge guide plate and a right discharge guide plate below it. The left discharge guide plate and the right discharge guide plate are arranged in a trumpet shape, and the width of the bottom discharge port of the left discharge guide plate and the right discharge guide plate is adapted to the width of the tea leaves.

[0011] To facilitate independent control of the feeding speed and leveling speed, the screen frame conveyor chain includes a front screen frame conveyor chain and a rear screen frame conveyor chain, with the feeding conveyor belt located above the front screen frame conveyor chain and the pressure roller located above the rear screen frame conveyor chain.

[0012] The beneficial effects of this invention are as follows: This invention improves the flatness of the dried tea leaves by using a pressure roller to re-level the tea leaves before drying. The pressure roller works in conjunction with a support plate for leveling. After pressing, the pressure roller is lifted by a swing arm lifting device, while the support plate falls under the action of a lifting cylinder, thus separating it from the sieve frame and facilitating the forward transport of the sieve frame. The feeding conveyor belt enables automatic arrangement of the tea leaves on the sieve frame. After arrangement, the tea leaves are transported by the sieve frame conveyor chain to the area below the pressure roller for leveling. After leveling, the sieve frame is then sent into the dryer for drying by the sieve frame conveyor chain, thus achieving automated processing.

[0013] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0014] Figure 1 This is a perspective view of the structure of Embodiment 1 of this utility model.

[0015] Figure 2 This is a front view of the structure of Embodiment 1 of this utility model.

[0016] Figure 3 This is a perspective view of the lifting cylinder and lifting bracket in this utility model.

[0017] Figure 4 This is a perspective view of the structure of Embodiment 2 of this utility model.

[0018] Figure 5 This is a top view of the rack drive motor and rack assembly in Embodiment 2 of this utility model.

[0019] Figure 6 This is the assembly front view of the left and right drop guide plates in Embodiment 2 of this utility model. Detailed Implementation

[0020] Example 1, such as Figures 1 to 3 As shown, a flat tea leveling and feeding device includes a frame 1. A screen frame conveyor chain 2, which drives a screen frame forward, is mounted on the frame 1. A movable slider 7 is positioned along the path of the screen frame conveyor chain 2. A swing arm 5 is hinged to the slider 7, and a rotatable pressure roller 3 is mounted on the swing arm 5. The frame 1 also includes a vertically movable support plate 4 for supporting the screen frame. When leveling the tea leaves on the screen, the support plate 4 rises to support the screen, and then the slider 7 drives the pressure roller 3 to move back and forth, thus leveling the tea leaves on the screen. When leveling the tea leaves is not required, to allow the pressure roller 3 to make way for the screen frame and facilitate smooth forward conveying of the screen frame, the frame 1 is equipped with a swing arm lifting device 6 that raises the swing arm 5, making the pressure roller 3 higher than the screen frame on the screen frame conveyor chain 2. During operation, the swing arm 5 is first lifted by the swing arm lifting device 6, so that the pressure roller 3 is away from the screen frame conveyor chain 2 and a gap is left between it and the screen frame conveyor chain 2 for the screen frame to pass through. After the screen frame is conveyed to the set position by the screen frame conveyor chain 2, the drive plate 4 moves upward and supports it under the screen frame screen. Then, the swing arm is lowered and pressed on the screen frame screen by the swing arm lifting device 6. Then, the slider 7 drives the pressure roller 3 to move back and forth. The pressure roller 3 and the support plate 4 work together to press and flatten the tea leaves spread on the screen frame screen. After the flattening is completed, the swing arm 5 is lifted by the swing arm lifting device 6 to move the pressure roller 3 away from the screen frame, leaving a gap for the screen frame to pass through. The screen frame is then conveyed to the drying process by the screen frame conveyor chain 2.

[0021] To enable the pressure roller 3 to move back and forth, a drive screw 8 is provided on the frame 1. One end of the drive screw 8 is connected to a screw motor 81. The slider 7 is threadedly engaged with the drive screw 8. The screw motor 81 drives the drive screw 8 to rotate, thereby driving the slider 7 to move back and forth, which in turn drives the swing arm 5 and the pressure roller 3 mounted on the swing arm 5 to move back and forth.

[0022] To achieve the lifting of the pressure roller 3, the swing arm lifting device 6 includes two support blocks 61 mounted on the frame 1, such as... Figure 2 As shown, when the slider 7 drives the swing arm 5 and the pressure roller 3 to move to the right, they are supported on the lower end surface of the swing arm 5 by the support block 61. Under the action of the support block 61, the swing arm 5 will rotate clockwise around the hinge point between the swing arm 5 and the slider 7, thereby driving the pressure roller 3 mounted on the swing arm 5 to move upward. The opposite occurs when the slider 7 drives the swing arm 5 and the pressure roller 3 to move to the left. To reduce friction loss, the support block 61 is equipped with rollers 62.

[0023] To enable the pallet 4 to move up and down, a lifting cylinder 9 is provided on the frame 1 below the pallet 4. A lifting bracket 10 is connected to the lifting cylinder 9 and supports the pallet 4 below it. The pallet 4 moves up and down by extending and retracting the lifting cylinder 9.

[0024] Preferably, the axis of the pressure roller 3 is the same as or perpendicular to the conveying direction of the screen frame conveyor chain 2.

[0025] Example 2: Figures 4 to 6 As shown, for convenient feeding, the screen frame conveyor chain 2 includes a front screen frame conveyor chain 21 and a rear screen frame conveyor chain 22. The pressure roller 3 is located above the rear screen frame conveyor chain 22. A set of feeding conveyor belts 11 is arranged on the frame 1 above the front screen frame conveyor chain 21. A set of push plates 12 are also arranged one-to-one with the feeding conveyor belts 11 to push the tea leaves off the feeding conveyor belts 11. The push plates 12 are fixedly installed on the push plate crossbeam 13. A rack 14 is arranged on the push plate crossbeam 13. A rack drive motor 15 is arranged on the frame 1. A gear 16 that cooperates with the rack 14 is arranged on the output shaft of the rack drive motor 15. In use, an empty screen frame is conveyed to the area below the feeding conveyor belt 11 via the front screen frame conveyor chain 21. Then, the rack and pinion drive motor 15 drives the rack 14 to move, which in turn drives the push plate beam 13 and the push plate 12 to move, scraping the tea leaves on the feeding conveyor belt 11 into the screen frame 100 on the front screen frame conveyor chain 21. Finally, the screen frame is conveyed to the area below the pressure roller 3 for leveling via the front screen frame conveyor chain 21 and the rear screen frame conveyor chain 22, thereby achieving automatic feeding and improving efficiency.

[0026] To automatically and neatly arrange the tea leaves, each of the feeding conveyor belts 11 is equipped with a left drop guide plate 17 and a right drop guide plate 18. The left drop guide plate 17 and the right drop guide plate 18 are arranged in a trumpet shape, and the width of the discharge port at the bottom of the left drop guide plate 17 and the right drop guide plate 18 is adapted to the width of the tea leaves. The tea leaves are pushed off the feeding conveyor belt 11 by the push plate 12, and the tea leaves fall downwards. The left drop guide plate 17 and the right drop guide plate 18 straighten the tea leaves and spread them neatly on the screen frame.

[0027] Preferably, the feeding conveyor belt 11 is arranged perpendicular to or parallel to the screen frame conveyor chain 2.

[0028] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A flat tea leveling and feeding device, comprising a frame (1), characterized in that: The frame (1) is provided with a screen frame conveyor chain (2) that drives the screen frame to move forward. A pressure roller (3) that moves back and forth is provided on the path of the screen frame conveyor chain (2). A support plate (4) that can move up and down to support the screen frame screen is also provided. After the support plate (4) is supported under the screen frame screen, the pressure roller (3) moves in coordination with the support plate (4) to level the tea leaves in the screen frame.

2. The flat tea leveling and feeding device according to claim 1, characterized in that: The axis of the pressure roller (3) is the same as or perpendicular to the conveying direction of the screen frame conveying chain (2); the pressure roller (3) is rotatably mounted on the swing arm (5); the frame (1) is provided with a swing arm lifting device (6) that drives the swing arm (5) to lift the pressure roller (3) higher than the screen frame on the screen frame conveying chain (2); the frame (1) is also provided with a sliding block (7) that moves back and forth, and the swing arm (5) is hinged to the sliding block (7).

3. The flat tea leveling and feeding device according to claim 2, characterized in that: The frame (1) is provided with a drive screw (8), and the slider (7) is threadedly engaged with the drive screw (8). The drive screw (8) rotates to drive the slider (7) to move back and forth.

4. The flat tea leveling and feeding device according to claim 2, characterized in that: The swing arm lifting device (6) includes two support blocks (61) set on the frame (1) and rollers (62) installed on the support blocks (61).

5. The flat tea leveling and feeding device according to claim 1, characterized in that: The frame (1) is provided with a lifting cylinder (9) located below the pallet (4), and a lifting bracket (10) is connected to the lifting cylinder (9). The lifting bracket (10) is supported below the pallet (4).

6. The flat tea leveling and feeding device according to claim 1, characterized in that: A set of feeding conveyor belts (11) is also provided above the frame (1), and a set of push plates (12) are also provided one-to-one with the feeding conveyor belts (11) to push the tea leaves on the feeding conveyor belts (11) away from the feeding conveyor belts (11). The push plates (12) are fixedly installed on the push plate crossbeam (13). A rack (14) is provided on the push plate crossbeam (13). A rack drive motor (15) is provided on the frame (1), and a gear (16) that cooperates with the rack (14) is provided on the output shaft of the rack drive motor (15).

7. The flat tea leveling and feeding device according to claim 6, characterized in that: The feeding conveyor belt (11) is set perpendicular to or parallel to the screen frame conveyor chain (2); each feeding conveyor belt (11) is provided with a left discharge guide plate (17) and a right discharge guide plate (18) below it. The left discharge guide plate (17) and the right discharge guide plate (18) are arranged in a funnel shape, and the width of the bottom discharge port of the left discharge guide plate (17) and the right discharge guide plate (18) is adapted to the width of the tea leaves.

8. The flat tea leveling and feeding device according to claim 6 or 7, characterized in that: The screen frame conveyor chain (2) includes a front screen frame conveyor chain (21) and a rear screen frame conveyor chain (22). The feeding conveyor belt (11) is located above the front screen frame conveyor chain (21), and the pressure roller (3) is located above the rear screen frame conveyor chain (22).

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