Automatic feeding and weighing device for white tea

Abstract

The utility model provides a kind of white tea automatic feed weighing device, including installation platform, fixed with weighing scale on installation platform, fixed with storage tank on installation platform, fixed with blanking passage on the lower side of storage tank, rotatingly connected with senior valve in blanking passage, rotatingly connected with junior valve in blanking passage below senior valve, and senior valve and junior valve are driven by rotating motor. Since the utility model is in blanking passage along the direction of gravity and is provided with two-stage rotary valve, during the weighing process, two-stage rotary valve keeps opening, tea enters weighing scale with approximately constant mass flow rate;When the sensor detection value reaches the "target weight-fall compensation", senior valve is immediately closed, only allow a small amount of tea that has crossed senior valve to continue falling, which significantly improves the weighing accuracy.

Description

Technical Field

[0001] This utility model relates to the technical field of weighing white tea, specifically to an automatic feeding and weighing device for white tea. Background Technology

[0002] White tea is mainly produced in Fujian, a region nestled between mountains and the sea, shrouded in mist and clouds, with an average annual temperature of 18℃ and slightly acidic red soil, nurturing superior varieties such as Da Bai and Shui Xian. Since the Song Dynasty tribute tea "Long Tuan Sheng Xue," it has been renowned for its "covered in white down, apricot-yellow liquor, and a honey-like aroma." Tea farmers adhere to the ancient method of "no frying, no rolling," undergoing only two processes: withering and drying, to maximize the preservation of tea polyphenols, amino acids, and active enzymes, resulting in teas with cooling, heat-clearing, and antioxidant effects.

[0003] According to Chinese Patent No. CN217100551 U, a weighing device for white tea leaves is disclosed, which solves the problems of existing weighing devices being unable to integrate with production lines to achieve integrated operation of feeding, weighing, and filling, as well as the low efficiency of manual operation. The device includes a weighing control component, a weighing hopper, a feeding conveyor belt, and a feeding anti-blocking component. The weighing control component is connected to one side of the weighing hopper, and the feeding conveyor belt is located at the top of the weighing hopper. The weighing control component consists of a hanging scale, a lifting plate, a connecting arm, and a controller. A feeding pipe is provided at the bottom of the weighing hopper. The feeding anti-blocking component consists of an L-shaped support arm, a drive motor, an electric telescopic rod, and a feeding guide rod. This device can achieve integrated operation of feeding, weighing, and filling with existing production lines, eliminating the need for manual intervention, reducing labor costs, and improving processing efficiency.

[0004] However, existing white tea weighing devices generally use gravity feeding and valve switching during the feeding process. The tea leaves fall directly through the valve by their own weight. The valve can only realize the on and off function and cannot linearly adjust the instantaneous flow rate, resulting in random fluctuations in the amount of material falling and causing inaccurate weighing. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the problem that existing white tea weighing devices generally use gravity feeding + valve opening and closing in the feeding process. The tea leaves fall directly through the valve by their own weight. The valve can only realize the on and off function and cannot linearly adjust the instantaneous flow rate, resulting in random fluctuations in the amount of material falling and causing inaccurate weighing.

[0006] The technical solution adopted to solve the above technical problems is:

[0007] An automatic feeding and weighing device for white tea includes an installation platform, a weighing scale fixed on the installation platform, a storage box fixed on the installation platform, a material discharge channel fixed on the lower side of the storage box, an upper valve rotatably connected in the material discharge channel, and a lower valve rotatably connected below the upper valve in the material discharge channel. The upper valve and the lower valve are driven by a rotating motor. The weight of the tea between the upper valve and the lower valve is less than the maximum error value of the tea weighing. The upper valve and the lower valve form a "dual-valve two-stage metering" system—the upper valve first quickly discharges the tea to the allowable error value, and then the lower valve slowly replenishes the tea.

[0008] As a preferred embodiment of this utility model, a support plate is fixed to the lower side of the installation platform, and a storage box is slidably connected to the front of the installation platform.

[0009] As a preferred embodiment of this utility model, the weighing scale is equipped with a control panel, a support rod, and a hopper.

[0010] As a preferred technical solution of this utility model, a sliding cylinder is fixed on the lower side of the hopper, the sliding cylinder is connected to the support rod, and a discharge pipe is fixed on the left side of the hopper. The width of the discharge pipe is smaller than that of the hopper, forming a "narrowing" guide.

[0011] As a preferred technical solution of this utility model, a sliding hole is opened on the back of the material feeding channel, and a moving plate is slidably connected in the sliding hole. The sliding hole allows the moving plate to move back and forth as a whole, thereby changing the relative axial position of the upper valve and the lower valve and realizing the adjustment of the allowable error.

[0012] As a preferred embodiment of this utility model, the movable plate is convex in shape, an upper valve is rotatably connected to the movable plate, a rotating motor is fixed to the back of the movable plate, and limit holes are opened on both the movable plate and the material discharge channel. The limit holes of the movable plate and the material discharge channel are connected by limit rods.

[0013] The beneficial effects of this utility model are as follows:

[0014] Because this invention sets two stages of rotary valves in series along the direction of gravity in the material feeding channel, the tea volume between the two stages of rotary valves is the allowable error amount. During the weighing process, the two stages of rotary valves remain open, and the tea enters the weighing scale at an approximately constant mass flow rate. When the sensor detects the value of “target weight - drop compensation amount”, the upper valve immediately closes, allowing only a small amount of tea that has passed the upper valve to continue falling, which significantly improves the weighing accuracy. Attached Figure Description

[0015] Figure 1 This is the first axial view of the present invention;

[0016] Figure 2 This is the second axial view of the present invention;

[0017] Figure 3 This is the third axial view of the present invention;

[0018] Figure 4 for Figure 3 A magnified view of part A.

[0019] In the diagram: 1. Installation platform; 2. Weighing scale; 3. Storage bin; 4. Material discharge channel; 5. Upper valve; 6. Lower valve; 7. Support plate; 8. Storage box; 9. Control panel; 10. Support rod; 11. Discharge hopper; 12. Sliding cylinder; 13. Discharge pipe; 14. Sliding hole; 15. Moving plate; 16. Limit hole; 17. Limit rod. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the above description of this utility model, it should be noted that the terms "one side," "the other side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] Furthermore, terms such as "identical" do not imply that components must be absolutely identical; minor differences are permissible. The term "perpendicular" simply means that the positional relationship between components is more perpendicular than "parallel," not that the structure must be perfectly perpendicular; a slight tilt is acceptable.

[0025] Example 1

[0026] exist Figure 1-4 This utility model provides a technical solution: an automatic feeding and weighing device for white tea, including an installation platform 1, a weighing scale 2 fixed on the installation platform 1, a storage box 3 fixed on the installation platform 1, a discharge channel 4 fixed on the lower side of the storage box 3, an upper valve 5 rotatably connected inside the discharge channel 4, and a lower valve 6 rotatably connected below the upper valve 5. The upper valve 5 and the lower valve 6 are driven by a rotating motor. When the weight of the tea between the upper valve 5 and the lower valve 6 is less than the maximum error value for weighing tea, the rotating motor first opens the upper valve 5 and the lower valve 6, allowing the white tea in the storage box 3 to fall into the discharge channel 4 onto the weighing scale 2. When the weight reaches the error value range, the upper valve 5 is closed, and the lower valve 6 is slowly closed, slowly releasing the tea with the allowable error between the upper valve 5 and the lower valve 6 onto the weighing scale 2, thereby improving the weighing accuracy.

[0027] In one aspect of this embodiment, a support plate 7 is fixed to the lower side of the mounting platform 1, and a storage box 8 is slidably connected to the front of the mounting platform 1.

[0028] In one aspect of this embodiment, a control panel 9 is fixed on the weighing scale 2, and a support rod 10 is fixed on the weighing scale 2. A hopper 11 is provided on the support rod 10, and a sliding cylinder 12 is fixed on the lower side of the hopper 11. The sliding cylinder 12 is connected to the support rod 10. A discharge pipe 13 is fixed on the left side of the hopper 11. The width of the discharge pipe 13 is smaller than that of the hopper 11. The sliding cylinder 12 moves up and down along the support rod 10, which is convenient for users to disassemble quickly. The control panel 9 displays the weight in real time and feeds it back to the rotating motor to realize closed-loop control. After the weighing is qualified, the hopper 11 is removed, and the tea leaves are evenly discharged through the narrowed discharge pipe 13 to prevent them from scattering.

[0029] In one aspect of this embodiment, a sliding hole 14 is provided on the back of the material feeding channel 4. A movable plate 15 is slidably connected within the sliding hole 14. The movable plate 15 is U-shaped. An upper-level valve 5 is rotatably connected to the movable plate 15. A rotating motor is fixed to the back of the movable plate 15. Limiting holes 16 are provided on both the movable plate 15 and the material feeding channel 4. The limiting holes 16 of the movable plate 15 and the material feeding channel 4 are connected by a limiting rod 17. Pulling the movable plate 15 can change the distance between the upper-level valve 5 and the lower-level valve 6, thereby adjusting the allowable error of the tea leaves. The U-shaped movable plate 15 is prevented from falling off when pulled. The limiting rod 17 can be locked in position by inserting into the corresponding limiting hole 16, thereby achieving rapid adjustment and reliable fixation of the valve cavity volume.

[0030] The working principle of this utility model is as follows: The support plate 7 raises the entire machine, and the white tea in the storage box 3 falls through the feeding channel 4. The rotating motor first opens the upper valve 5 and the lower valve 6, allowing the tea to fall into the feeding hopper 11 on the weighing scale 2. When the weight enters the error value range, the upper valve 5 closes quickly, and the lower valve 6 closes slowly, releasing the tea within the allowable error range between the two valves, achieving secondary feeding and improving weighing accuracy. The control panel 9 displays the weight in real time and controls the rotating motor in a closed loop. After weighing, the feeding hopper 11 is removed, and the tea is evenly discharged into the storage box 8 through the narrowed discharge pipe 13 to prevent scattering. The pull-out U-shaped movable plate 15 can adjust the distance between the upper valve 5 and the lower valve 6, changing the allowable error range. The limit rod 17 is inserted into the corresponding limit hole 16 to lock the position, realizing rapid adjustment and reliable fixation of the valve cavity volume, completing the entire automatic feeding and weighing process of "quantitative initial release - error compensation - closed-loop weighing - rapid discharge - adjustable volume".

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An automatic feeding and weighing device for white tea, comprising an installation platform (1), characterized in that: A weighing scale (2) is fixed on the installation platform (1), a storage box (3) is fixed on the installation platform (1), a material drop channel (4) is fixed on the lower side of the storage box (3), an upper valve (5) is rotatably connected in the material drop channel (4), and a lower valve (6) is rotatably connected on the lower side of the upper valve (5) in the material drop channel (4). The upper valve (5) and the lower valve (6) are driven by a rotating motor.

2. The automatic feeding and weighing device for white tea according to claim 1, characterized in that: The mounting platform (1) is fixed with a support plate (7) on its lower side, and a storage box (8) is slidably connected to the front of the mounting platform (1).

3. The automatic feeding and weighing device for white tea according to claim 1, characterized in that: The weighing scale (2) is fixed with a control panel (9), and a support rod (10) is fixed on the weighing scale (2). The support rod (10) is provided with a hopper (11).

4. The automatic feeding and weighing device for white tea according to claim 3, characterized in that: A sliding cylinder (12) is fixed on the lower side of the hopper (11). The sliding cylinder (12) is connected to the support rod (10). A discharge pipe (13) is fixed on the left side of the hopper (11). The width of the discharge pipe (13) is smaller than that of the hopper (11).

5. The automatic feeding and weighing device for white tea according to claim 1, characterized in that: The material feeding channel (4) has a sliding hole (14) on its back, and a movable plate (15) is slidably connected inside the sliding hole (14).

6. The automatic feeding and weighing device for white tea according to claim 5, characterized in that: The movable plate (15) is convex in shape. An upper valve (5) is rotatably connected to the movable plate (15). A rotating motor is fixed on the back of the movable plate (15). Limiting holes (16) are opened on both the movable plate (15) and the material discharge channel (4). The limiting holes (16) of the movable plate (15) and the material discharge channel (4) are connected by limiting rods (17).

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