Automatic blanking mechanism for tea screening machine

Abstract

The utility model discloses an automatic blanking mechanism for a tea screening machine, and relates to the technical field of tea processing equipment. Comprising a mounting frame, a hopper is arranged on the inner side of the mounting frame and close to the left upper corner, a blanking frame is arranged below the hopper, a guide rail is fixedly welded to the bottom of the mounting frame and close to the left edge, a control frame is fixedly welded to the outer side of the hopper, and movable wheels are mounted at the bottom of the control frame and located on the inner side of the guide rail; a driving mechanism for driving the hopper and the control frame to shake is arranged at the position, close to the right side edge, of the top of the mounting frame, the driving mechanism comprises a motor, a rotating disc and a connecting plate, the blanking frame is movably connected with the mounting frame, and a hydraulic cylinder for adjusting the blanking frame is arranged on the right side of the blanking frame. Through the arrangement of the control frame and the driving mechanism, the tea falling uniformity is improved, the tea is effectively prevented from being blocked at the bottom of the hopper, the tea is prevented from being pressed and broken, and therefore the tea loss is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of tea processing equipment, in particular to an automatic material dropping mechanism for a tea screening machine. Background Art

[0002] During the tea processing, a tea screening machine is needed to screen the tea to separate the powder and broken tea in the tea. In order to facilitate the screening of the tea by the tea screening machine, a dropping mechanism is usually used to transport the tea to the screen of the screening machine.

[0003] In the prior art, patent announcement number CN216137673U has an automatic material dropping mechanism for a tea screening machine, including a storage hopper, a discharge port is provided at the bottom of the storage hopper, a mounting box is fixedly installed on one side of the top of the storage hopper, the inner wall of the mounting box is rotatably connected to a screw rod, a movable seat is also slidably connected to the inside of the mounting box, and the movable seat is threadedly connected to the screw rod, a servo motor is fixedly installed on one side of the mounting box, the output end of the servo motor passes through the side wall of the mounting box and is fixedly connected to the screw rod, the bottom of the movable seat is rotatably connected to a stirring shaft, and the bottom of the stirring shaft extends into the discharge port and a number of stirring blades are fixedly installed on the surrounding side. This scheme rotates the output end of the servo motor, drives the stirring blades to reciprocate at the discharge port after transmission, and rotates at the same time to scatter the tea leaves in the discharge port, which can effectively prevent the discharge port from being blocked by tea leaves.

[0004] The above scheme still has some shortcomings. For example, in order to avoid tea clogging, the tea leaves are broken up by stirring leaves. However, during the tea breaking process, the stirring leaves will squeeze a large amount of tea leaves, causing the tea leaves to be crushed, thereby producing more tea powder and broken tea, resulting in increased tea loss and increased production costs. In view of this, the utility model proposes an automatic dropping mechanism for a tea screening machine. Utility Model Content

[0005] The purpose of the utility model is to provide an automatic material dropping mechanism for a tea screening machine to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic blanking mechanism for a tea screening machine, comprising a mounting frame, a hopper is provided on the inner side of the mounting frame and near the upper left corner, a blanking frame is provided below the hopper, a guide rail is welded and fixed to the bottom of the mounting frame and near the left edge, a control frame is welded and fixed to the outside of the hopper, a movable wheel is installed at the bottom of the control frame and on the inner side of the guide rail, a driving mechanism for driving the hopper and the control frame to shake is provided at the top of the mounting frame and near the right edge, the driving mechanism comprises a motor, a turntable and a connecting plate, the blanking frame is movably connected to the mounting frame, and a hydraulic cylinder for adjusting the blanking frame is provided on the right side of the blanking frame.

[0007] Preferably, a fixing hole is provided at the top of the mounting frame and near the left edge, an arc-shaped groove is provided on the inner side of the guide rail, and a connecting shaft is provided on the control frame and on the inner side of the fixing hole, the connecting shaft is movably connected to the fixing hole, and the movable wheel is rollingly connected to the arc-shaped groove.

[0008] Furthermore, a pushing block is welded and fixed on the right side of the control frame, the motor is installed on the top of the mounting frame, the turntable is coaxially driven with the output shaft of the motor, an eccentric shaft is provided on the turntable near the edge, and the two ends of the connecting plate are rotatably connected to the connecting block and the eccentric shaft respectively.

[0009] Preferably, a rubber sleeve connected to the blanking rack is bonded and fixed to the bottom of the hopper, and the rubber sleeve is bonded and fixed to the inner wall of the blanking rack.

[0010] Preferably, a triangular movable hole is provided on the left side plate of the mounting frame and near the center, and movable shafts are provided on the front and rear sides of the blanking frame and inside the movable hole, and the movable shafts are movably connected to the movable hole.

[0011] Furthermore, a vibration motor is installed at the bottom of the blanking rack and near the center.

[0012] Preferably, a fixing rod is welded and fixed on the inner side of the mounting frame and close to the right edge, a connecting block is welded and fixed on the right side of the blanking frame, the cylinder body of the hydraulic cylinder is rotatably connected to the fixing rod, and a movable block rotatably connected to the connecting block is welded and fixed on the piston rod of the hydraulic cylinder.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The invention discloses an automatic dropping mechanism for a tea screening machine. The mechanism comprises a control frame and a driving mechanism. When the tea is supplied, the motor is operated so that the control frame rotates around a connecting shaft and a movable wheel rolls on an arc-shaped groove, thereby driving a hopper to swing back and forth, so that the tea can be dropped into the dropping frame through a rubber sleeve for transportation, thereby improving the uniformity of the tea when it falls, effectively preventing the tea from being blocked at the bottom of the hopper, and avoiding the tea from being crushed under pressure, thereby reducing the loss of the tea.

[0015] At the same time, through the blanking rack, vibration motor and hydraulic cylinder, the hydraulic cylinder can adjust and control the angle of the blanking rack, thereby facilitating the regulation of the feeding process of the tea leaves and the falling position of the tea leaves. The vibration motor drives the blanking rack to vibrate and discharge the tea leaves, which can improve the transportation effect of the tea leaves and effectively prevent the tea leaves from being blocked during the discharge process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the mounting frame structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the control frame structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the driving mechanism structure of the utility model;

[0020] Figure 5 This is a schematic diagram of the blanking rack structure of the utility model.

[0021] In the figure: 1. mounting frame; 11. fixing hole; 12. guide rail; 121. arc groove; 13. movable hole; 14. fixing rod; 2. hopper; 21. rubber sleeve; 3. blanking rack; 31. movable shaft; 32. vibration motor; 33. connecting block; 4. control frame; 41. connecting shaft; 42. movable wheel; 43. pushing block; 5. motor; 51. turntable; 52. eccentric shaft; 53. connecting plate; 6. hydraulic cylinder; 61. movable block. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the process of tea processing, a tea screening machine is needed to screen the tea, so as to separate the powder and broken tea in the tea, and improve the quality and consistency of the tea. The automatic dropping mechanism for the tea screening machine provided by the utility model is specially used for feeding the tea screening machine. Before the tea is conveyed to the tea screening machine, the dropping mechanism needs to be installed above the tea screening machine through the mounting frame 1, so as to ensure that the tea can evenly fall into the screen of the tea screening machine.

[0024] like Figure 1 - Figure 5As shown, the utility model provides a technical solution: an automatic blanking mechanism for a tea screening machine, comprising a mounting frame 1, a hopper 2 is provided on the inner side of the mounting frame 1 and near the upper left corner, a blanking frame 3 is provided below the hopper 2, a guide rail 12 is welded and fixed to the bottom of the mounting frame 1 and near the left edge, a control frame 4 is welded and fixed to the outside of the hopper 2, a movable wheel 42 is installed at the bottom of the control frame 4 and on the inner side of the guide rail 12, a driving mechanism for driving the hopper 2 and the control frame 4 to shake is provided at the top of the mounting frame 1 and near the right edge, the driving mechanism comprises a motor 5, a turntable 51 and a connecting plate 53, the blanking frame 3 is movably connected to the mounting frame 1, and a hydraulic cylinder 6 for adjusting the blanking frame 3 is provided on the right side of the blanking frame 3.

[0025] When feeding, the angle of the blanking rack 3 can be adjusted and controlled by the hydraulic cylinder 6. When the blanking rack 3 is in a horizontal state or tilted to the right, the tea leaves will accumulate in the blanking rack 3 and the feeding will be automatically stopped. When the blanking rack 3 is tilted to the left, the blanking rack 3 is at different angles, which can make the tea leaves fall to different positions, ensuring that the tea leaves are evenly spread on the screen and improving the screening efficiency of the tea leaves. In addition, when the motor 5 is running, the control frame 4 can be driven to rotate back and forth on the mounting frame 1 through the driving mechanism, and the movable wheel 42 rolls back and forth in the guide rail 12, thereby driving the hopper 2 to swing back and forth, making it convenient for the tea leaves to fall into the blanking rack 3 through the rubber sleeve 21 for transportation, thereby improving the uniformity of the tea leaves when falling, effectively preventing the tea leaves from being blocked at the bottom of the hopper 2, and avoiding the tea leaves from being crushed under pressure.

[0026] like Figure 2 - Figure 4 As shown, a fixing hole 11 is provided at the top of the mounting frame 1 and near the left edge, an arc-shaped groove 121 is provided on the inner side of the guide rail 12, and a connecting shaft 41 is provided on the control frame 4 and located on the inner side of the fixing hole 11. The connecting shaft 41 is movably connected to the fixing hole 11, and the movable wheel 42 is rollingly connected to the arc-shaped groove 121.

[0027] A push block 43 is welded and fixed on the right side of the control frame 4, the motor 5 is installed on the top of the mounting frame 1, the turntable 51 is coaxially driven with the output shaft of the motor 5, an eccentric shaft 52 is arranged on the turntable 51 near the edge, and the two ends of the connecting plate 53 are rotatably connected to the connecting block 33 and the eccentric shaft 52 respectively.

[0028] The motor 5 drives the turntable 51 to rotate, and the control frame 4 can be driven to move through the eccentric shaft 52 and the connecting plate 53, so that the control frame 4 rotates around the connecting shaft 41, and the movable wheel 42 rolls on the arc groove 121, so that the control frame 4 drives the hopper 2 to swing back and forth, so that the tea leaves inside the hopper 2 fall evenly into the unloading rack 3 for unloading, and the tea leaves are effectively prevented from being blocked at the bottom of the hopper 2.

[0029] A rubber sleeve 21 connected to the blanking rack 3 is bonded and fixed to the bottom of the hopper 2. The rubber sleeve 21 is bonded and fixed to the inner wall of the blanking rack 3. The rubber sleeve 21 and the blanking rack 3 cooperate to enclose the outside of the tea leaves to prevent the tea leaves from falling from the right end of the blanking rack 3. At the same time, it is convenient for the blanking rack 3 to move.

[0030] like Figure 1 and Figure 5 As shown, a triangular movable hole 13 is provided on the left side plate of the mounting frame 1 and near the center, movable shafts 31 are provided on the front and rear sides of the blanking frame 3 and on the inner side of the movable hole 13, and the movable shaft 31 is movably connected with the movable hole 13 to facilitate the movement of the blanking frame 3, and a vibration motor 32 is installed at the bottom of the blanking frame 3 and near the center, and the vibration motor 32 adopts a PT-MVE AC micro vibration motor.

[0031] When the tea leaves fall onto the screen of the tea screening machine through the drop rack 3, the vibration motor 32 can drive the drop rack 3 to vibrate, thereby ensuring that the drop rack 3 evenly transports the tea leaves and improving the evenness of the tea leaves when they fall.

[0032] A fixed rod 14 is welded and fixed on the inner side of the mounting frame 1 and near the right edge, a connecting block 33 is welded and fixed on the right side of the blanking rack 3, the cylinder body of the hydraulic cylinder 6 is rotatably connected to the fixed rod 14, and a movable block 61 rotatably connected to the connecting block 33 is welded and fixed on the piston rod of the hydraulic cylinder 6. When the hydraulic cylinder 6 is running, the cylinder body of the hydraulic cylinder 6 rotates on the fixed rod 14, and the movable block 61 on the piston rod rotates on the connecting block 33, so that the angle of the blanking rack 3 can be adjusted, which is convenient for controlling the feeding of tea leaves.

[0033] Working principle: First, tea leaves are loaded into the hopper 2, and the tea leaves fall onto the blanking rack 3 through the rubber sleeve 21 at the bottom of the hopper 2, and gradually accumulate on the inner side of the rubber sleeve 21. When feeding, the hydraulic cylinder 6 is operated to adjust the angle of the blanking rack 3, so that the blanking end of the blanking rack 3 is tilted to the left, which is convenient for blanking;

[0034] Furthermore, the motor 5 is operated to drive the turntable 51 to rotate, and the eccentric shaft 52 and the connecting plate 53 cooperate with each other to drive the control frame 4 to rotate around the connecting shaft 41, and the movable wheel 42 rolls on the arc groove 121, so that the control frame 4 drives the hopper 2 to swing back and forth, so that the tea leaves fall evenly into the blanking rack 3 for unloading. At the same time, the vibration motor 32 is operated to drive the blanking rack 3 to vibrate, so that the blanking rack 3 vibrates to unload the tea leaves, thereby improving the conveying effect of the tea leaves, effectively preventing the tea leaves from being blocked during the unloading process, and preventing the tea leaves from being squeezed and broken.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is limited by the attached embodiments and their equivalents.

Claims

1. An automatic material dropping mechanism for a tea screening machine, comprising a mounting frame, a hopper is provided on the inner side of the mounting frame and near the upper left corner, and a material dropping frame is provided below the hopper, characterized in that: A guide rail is welded and fixed at the bottom of the mounting frame and near the left edge, a control frame is welded and fixed to the outside of the hopper, a movable wheel is installed at the bottom of the control frame and on the inner side of the guide rail, a driving mechanism for driving the hopper and the control frame to shake is provided at the top of the mounting frame and near the right edge, the driving mechanism includes a motor, a turntable and a connecting plate, the blanking rack is movably connected to the mounting rack, and a hydraulic cylinder for adjusting the blanking rack is provided on the right side of the blanking rack.

2. The automatic material dropping mechanism for a tea screening machine according to claim 1, characterized in that: A fixing hole is provided at the top of the mounting frame and near the left edge, an arc-shaped groove is provided on the inner side of the guide rail, and a connecting shaft is provided on the control frame and on the inner side of the fixing hole. The connecting shaft is movably connected to the fixing hole, and the movable wheel is rollingly connected to the arc-shaped groove.

3. The automatic material dropping mechanism for a tea screening machine according to claim 2, characterized in that: A pushing block is welded and fixed on the right side of the control frame, the motor is installed on the top of the mounting frame, the turntable is coaxially driven with the output shaft of the motor, an eccentric shaft is arranged on the turntable near the edge, and the two ends of the connecting plate are rotatably connected to the connecting block and the eccentric shaft respectively.

4. The automatic material dropping mechanism for a tea screening machine according to claim 1, characterized in that: A rubber sleeve connected to the blanking rack is bonded and fixed to the bottom of the hopper, and the rubber sleeve is bonded and fixed to the inner wall of the blanking rack.

5. The automatic material dropping mechanism for a tea screening machine according to claim 1, characterized in that: A triangular movable hole is provided on the left side plate of the mounting frame near the center, and movable shafts are provided on the front and rear sides of the blanking frame and inside the movable hole, and the movable shafts are movably connected to the movable hole.

6. The automatic material dropping mechanism for a tea screening machine according to claim 5, characterized in that: A vibration motor is installed at the bottom of the blanking rack and near the center.

7. The automatic material dropping mechanism for a tea screening machine according to claim 1, characterized in that: A fixing rod is welded and fixed on the inner side of the mounting frame and near the right edge, a connecting block is welded and fixed on the right side of the blanking frame, the cylinder body of the hydraulic cylinder is rotatably connected to the fixing rod, and a movable block rotatably connected to the connecting block is welded and fixed on the piston rod of the hydraulic cylinder.

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