Automatic discharging mechanism of tea drying sieve

Abstract

The utility model discloses an automatic blanking mechanism of a tea drying sieve, which comprises a blanking platform arranged below a discharge port of a drying machine and a fixed frame positioned above the discharge port of the drying machine, two rotating screw rods which synchronously move are arranged between the fixed frame and the blanking platform, each rotating screw rod is provided with a screw rod nut, and the screw rod nut is connected with the fixed frame. A movable plate is fixedly arranged on the lead screw nut, an overturning supporting plate capable of being overturned downwards is arranged on the movable plate, the drying screen is placed on the overturning supporting plate, and after the overturning supporting plate is overturned downwards by a certain angle, the overturning supporting plate is separated from the drying screen, so that the drying screen falls onto the discharging platform. According to the utility model, the screw rod drives the overturning supporting plate to move up and down, so that the baking sieve moves up and down, and meanwhile, when the overturning supporting plate descends to the upper part of the blanking platform, the overturning supporting plate can be automatically overturned to be opened and separated from the baking sieve, so that the baking sieve falls on the blanking platform, and automatic blanking is realized, the labor intensity is reduced, and the operation safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tea processing, in particular to an automatic blanking mechanism for a tea drying sieve. Background Art

[0002] After the vertical tea dryer finishes drying the tea, the drying sieve needs to be taken out in time. At present, the drying sieve is manually carried for both taking and placing. Generally, the structure of the vertical dryer uses top-layer discharging, with a high height. The operator needs to hold the drying sieve above the head to take it out, which is inconvenient to operate and prone to tipping. In the case of a higher height, steps need to be padded below, and the operator needs to climb up and down for taking and placing, which is even more inconvenient to operate and increases the risk of operation. Therefore, a blanking structure is needed to enable the drying sieve to smoothly descend to the workbench for the convenience of the operator to take and place. Content of the Utility Model

[0003] The purpose of the utility model is to provide an automatic blanking mechanism for a tea drying sieve to solve the problem of inconvenient manual material taking operation.

[0004] The technical solution adopted by the utility model to solve its technical problems is: an automatic blanking mechanism for a tea drying sieve, including a blanking platform arranged below the discharging port of the dryer and a fixed frame located above the discharging port of the dryer. Two synchronously moving rotating lead screws are arranged between the fixed frame and the blanking platform. A lead screw nut is arranged on each rotating lead screw. A moving plate is fixedly arranged on the lead screw nut. A flip tray that can be turned downward is arranged on the moving plate. The drying sieve is placed on the flip tray. When the flip tray turns downward by a certain angle, the flip tray is separated from the drying sieve, causing the drying sieve to fall onto the blanking platform.

[0005] Specifically, a connecting hinge is arranged between the flip tray and the moving plate. Two guide rods are arranged between the blanking platform and the fixed frame. A slider that can move up and down along the guide rods is arranged on the guide rods. One end of the slider is hinged to the upper edge of the flip tray. The movement of the slider along the guide rods drives the flip tray to turn.

[0006] Further, the slider includes a connecting plate hinged to the flip tray, a pair of limit roller mounting arms fixedly installed on the connecting plate. A front limit roller and a rear limit roller are rotatably installed on the limit roller mounting arms. The gap between the front limit roller and the rear limit roller is larger than the diameter of the guide rod. The guide rod presses against the front limit roller or the rear limit roller.

[0007] To improve the reliability of the flip tray in supporting the drying sieve, a set of tension springs is further arranged between the upper edge of the flip tray and the moving plate.

[0008] To improve the consistency of the left - right flipping pallet during operation, a horizontal rotating shaft is rotatably installed on the fixed frame, and two driving bevel gears are installed on the horizontal rotating shaft. A driven bevel gear that cooperates with the driving bevel gear is provided at the top of the rotating lead screw.

[0009] Advantages of the present utility model: The present utility model drives the flipping pallet to move up and down through the lead screw, realizing the up - and - down movement of the baking sieve. At the same time, when the flipping pallet descends to above the blanking platform, the flipping pallet can automatically flip open and disengage from the baking sieve, so that the baking sieve falls on the blanking platform, realizing automatic blanking, reducing labor intensity and improving operation safety. The flipping pallet adopts the form of a guide rod cooperating with a hinge to automatically open after descending to a certain height, with a clever structural design, good stability and low cost.

[0010] The following will combine the drawings and embodiments to describe the present utility model in more detail. Brief Description of the Drawings

[0011] Figure 1 is a three - dimensional structure schematic diagram of the present utility model Figure 1 。

[0012] Figure 2 is a three - dimensional structure schematic diagram of the present utility model Figure 2 。

[0013] Figure 3 is the front view of the present utility model.

[0014] Figure 4 is Figure 3 the sectional view taken along A - A in Detailed Description of the Specific Embodiment

[0015] Embodiment, as Figures 1 to 4 shown, a kind of automatic blanking mechanism for a tea baking sieve is used to catch the baking sieve coming out of a vertical tea dryer and convey it downward to a platform where people can easily reach, realizing the automatic blanking of the baking sieve. This mechanism includes a blanking platform 1 arranged below the discharge port of the dryer 100 and a fixed frame 2 located above the discharge port of the dryer. Two synchronously moving rotating lead screws 3 are arranged between the fixed frame 2 and the blanking platform 1. A lead screw nut 4 is arranged on each rotating lead screw 3. The rotation of the rotating lead screw 3 drives the lead screw nut 4 to move up and down. A moving plate 5 is fixedly arranged on the lead screw nut 4. The length of the moving plate 5 is adapted to the length of the baking sieve. To ensure the stable operation of the moving plate 5, the lead screw nut 4 is located in the middle of the moving plate 5, and a guide post 13 is arranged at each end of the moving plate 5. The two ends of the guide post 13 are respectively fixed on the blanking platform 1 and the fixed frame 2.

[0016] A flip tray 6 that can be flipped downward is provided on the moving plate 5. When the flip tray 6 supports below the drying sieve, it can drive the drying sieve 200 to move downward together. When it descends to a specified height, the flip tray 6 flips downward by a certain angle, and the flip tray 6 separates from the drying sieve 200, causing the drying sieve 200 to fall onto the blanking platform 1 to complete automatic blanking.

[0017] The specific flipping structure of the flip tray 6 is as follows:

[0018] A connecting hinge 7 is provided between the middle position of the flip tray 6 and the moving plate 5, and it can rotate around the connecting hinge 7. To achieve automatic flipping during falling, two guide rods 8 are provided between the blanking platform 1 and the fixed frame 2, corresponding to the flip trays 6 on the two rotating lead screws 3 respectively. The guide rod 8 includes an upper straight section 81, a transition section 82, and a lower straight section 83. The distance between the upper straight sections 81 of the two guide rods 8 is greater than the distance between the lower straight sections 83.

[0019] A slider 9 that can move up and down along the guide rod 8 is provided on the guide rod 8. One end of the slider 9 is hinged to the upper edge of the flip tray 6. The slider 9 includes a connecting plate 91 hinged to the flip tray 6, a pair of limit roller mounting arms 92 fixedly installed on the connecting plate 91. A front limit roller 93 and a rear limit roller 94 are rotatably installed on the limit roller mounting arms 92. The gap between the front limit roller 93 and the rear limit roller 94 is greater than the diameter of the guide rod 8, and the guide rod 8 is pressed against the front limit roller 93 or the rear limit roller 94. When the slider 9 is at the position of the upper straight section 81 of the guide rod 8, the front limit roller 93 presses on the guide rod 8. At this time, the flip tray 6 supports below the drying sieve 200 at a certain angle. To improve the supporting force of the flip tray 6 and prevent tilting under force, a set of tension springs 10 are also provided between the upper edge of the flip tray 6 and the moving plate 5. When moving downward to the transition section 82, the flip tray 6 gradually flips downward. When moving downward to the lower straight section 83, the flip tray 6 flips to the maximum position, and the flip tray separates from the drying sieve 200, and the drying sieve automatically falls onto the blanking platform 1. At this time, the guide rod is pressed against the rear limit roller 94.

[0020] To improve the synchronization of the two flip trays 6, a transverse rotating shaft 11 is rotatably installed on the fixed frame 2. One end of the transverse rotating shaft 11 is provided with a rotating motor 14. Two driving bevel gears 12 are installed on the transverse rotating shaft 11. The top of the rotating lead screw 3 is provided with a driven bevel gear 31 that cooperates with the driving bevel gear 12. The rotating motor 14 drives the transverse rotating shaft 11 to rotate, and the driving bevel gear 12 cooperates with the driven bevel gear 31 to drive the lower rotating lead screw 3 to rotate.

[0021] The above has made an exemplary description of the present utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the present utility model is not limited by the above methods. As long as various non-substantive improvements are made by adopting the method concept and technical solution of the present utility model; or without improvement, the above concept and technical solution of the present utility model are directly applied to other occasions, they are all within the protection scope of the present utility model.

Claims

1. An automatic unloading mechanism for tea leaves drying and screening, characterized in that: The invention comprises a material drop platform (1) arranged below the material discharge port of the dryer and a fixed frame (2) located above the material discharge port of the dryer. Two synchronously moving rotating screws (3) are arranged between the fixed frame (2) and the material drop platform (1). A screw nut (4) is arranged on each rotating screw (3). A movable plate (5) is fixedly arranged on the screw nut (4). A flip support plate (6) that can be flipped downward is arranged on the movable plate (5). The flip support plate (6) is supported below the drying screen. When the flip support plate (6) flips downward at a certain angle, the flip support plate (6) is separated from the drying screen, so that the drying screen falls onto the material drop platform (1).

2. The automatic tea drying and screening feeding mechanism according to claim 1, characterized in that: A connecting hinge (7) is provided between the flipping support plate (6) and the movable plate (5), two guide rods (8) are provided between the blanking platform (1) and the fixed frame (2), a slider (9) is provided on the guide rod (8) and can move up and down along the guide rod (8), one end of the slider (9) is hinged to the upper edge of the flipping support plate (6), and the slider (9) moves along the guide rod (8) to drive the flipping support plate (6) to flip.

3. The automatic tea drying and screening feeding mechanism according to claim 2, characterized in that: The slider (9) comprises a connecting plate (91) hinged to the flip support plate (6), a pair of limit roller mounting arms (92) fixedly mounted on the connecting plate (91), a front limit roller (93) and a rear limit roller (94) rotatably mounted on the limit roller mounting arms (92), a gap between the front limit roller (93) and the rear limit roller (94) being larger than the diameter of the guide rod (8), and the guide rod (8) is pressed against the front limit roller (93) or the rear limit roller (94).

4. The automatic tea drying and screening feeding mechanism according to claim 2, characterized in that: A group of tension springs (10) is also arranged between the upper edge of the flip support plate (6) and the movable plate (5).

5. The automatic tea drying and screening feeding mechanism according to claim 1, characterized in that: A transverse rotating shaft (11) is rotatably mounted on the fixed frame (2), two active bevel gears (12) are mounted on the transverse rotating shaft (11), and a driven bevel gear (31) matching with the active bevel gear (12) is arranged on the top of the rotating screw rod (3).

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