Tea leaf weighing and distributing mechanism

Abstract

The utility model relates to tea packaging equipment technical field, concretely is a kind of tea weighing and distributing mechanism, including rack, be equipped with several parallelly arranged conveyer belt on the rack, conveyer belt is obliquely arranged, there are several baffles on the belt body of conveyer belt equidistantly spaced, form accommodating groove between adjacent baffle, track partition is equipped between adjacent conveyer belt;Rack is located at the bottom of conveyer belt and is equipped with bunker, bunker bottom is equipped with the anti-leakage groove corresponding to each conveyer belt bottom end outer contour;Rack is located at the top of conveyer belt rear side and is equipped with weighing module;The rack is located above conveyer belt and is also equipped with cover plate, cover plate is equipped with several mounting holes, positive pressure air pipe and negative pressure air pipe are connected in mounting hole, and the operating end of positive pressure air pipe and negative pressure air pipe is towards conveyer belt area, and constitute tea dust removal mechanism.The utility model is favorable to solve the problem of existing technology, tea is easy to leak when feeding, does not have tea dust removal mechanism to affect finished product quality.

Description

Technical Field

[0001] This utility model belongs to the technical field of tea packaging equipment, and in particular relates to a tea weighing and dispensing mechanism. Background Technology

[0002] For ease of brewing and storage, and for aesthetic appeal, most domestic tea packaging uses small bags weighing 5-10 grams. This is especially true for world-renowned teas, such as Tieguanyin from Anxi, Quanzhou, Fujian, which are sold in large quantities in small packages. However, because tea leaves are irregularly shaped, loose, and brittle solids, manual weighing is difficult to be accurate. The small size of the 5-10 gram tea bags, coupled with their foldable design, makes packing small quantities of tea cumbersome. Manual packaging is both tedious and time-consuming, with each person only able to pack a maximum of 0.75 kg of tea per hour.

[0003] Chinese patent CN108327940A discloses an automatic feeding type vertical packaging machine for quantitative outer bags of tea, including a frame. The frame is vertically divided into a first cavity, a second cavity, and a third cavity by a first partition plate and a second partition plate. The first cavity is provided with a feeding and weighing mechanism on the first partition plate. The second cavity is provided with a material passage channel connecting the first cavity and the third cavity on the second partition plate. The first partition plate is connected to the material passage channel via a material hopper on the side near the material passage channel. The second cavity is provided with a packaging bag bin. The side of the second partition plate facing the second cavity is provided with a first suction mechanism below the packaging bag bin. The end of the material passage channel near the second partition plate is provided with a bag supporting mechanism in the second cavity. The other side of the bag supporting mechanism is provided with a second suction mechanism. A sealing mechanism is provided below the bag supporting mechanism. An automatic feeding mechanism is provided on one side of the frame to transport the outer tea leaves to the end of the feeding and weighing mechanism away from the first partition plate.

[0004] However, in this technical solution, the bottom of the conveyor belt of the automatic feeding mechanism is directly and intermittently set below the feeding hopper. This structure easily leads to the tea leaves not being accurately dropped into the receiving trough of the conveyor belt and scattering at the bottom of the frame. Moreover, when this tea leaf lifting method is working, the relative friction between the movement of the conveyor belt and the tea leaves at the bottom of the feeding hopper will inevitably produce a certain amount of tea dust. This tea dust will directly participate in the weighing and distribution after climbing up with the conveyor belt, which will affect the quality of the finished tea product. Utility Model Content

[0005] This invention provides a tea weighing and dispensing mechanism that can effectively solve the above-mentioned problems.

[0006] This utility model is implemented as follows:

[0007] A tea weighing and dispensing mechanism includes a frame with several parallel conveyor belts arranged at an angle. Each conveyor belt has several baffles evenly spaced along its body, forming a receiving groove between adjacent baffles. A track partition is provided between adjacent conveyor belts. A hopper is located at the bottom of the frame near the conveyor belts, with a leak-proof groove at the bottom corresponding to the outer contour of each conveyor belt's bottom. The conveyor belts, when in motion, can lift and convey tea leaves in batches within the hopper. A weighing module is located at the top rear of the frame near the conveyor belts, capable of weighing the tea leaves fed into the conveyor belts. A cover plate is also located above the conveyor belts, with several mounting holes. Positive and negative pressure air pipes are connected to these holes and are respectively connected to external air compression equipment. The working ends of the positive and negative pressure air pipes face the conveyor belt area, forming a tea dust removal mechanism.

[0008] Based on the above technical solution, the top of the track partition is inverted "V" shape.

[0009] Based on the above technical solution, the bottom of the hopper is provided with a buffer platform, and the angle between the buffer platform and the top of the anti-leakage trough is an acute angle. During the process of the baffle flipping and moving upward at the bottom of the conveyor belt, the outer end of the baffle is fitted with the inner wall of the anti-leakage trough.

[0010] Based on the above technical solution, one end of the cover plate is hinged to the frame, and the other end is provided with a snap-fit ​​connection structure to the frame support.

[0011] Based on the above technical solution, the cover plate is provided with two rows of mounting holes spaced apart vertically. The mounting holes located at the top are connected to the negative pressure air pipe, and the mounting holes located at the bottom are connected to the positive pressure air pipe.

[0012] Based on the above technical solution, the weighing module includes a receiving cylinder, a support, a weight sensor, a base, an opening and closing drive, a swing arm, and an opening and closing baffle. The base is fixedly connected to the frame, the weight sensor is mounted on the base, and the receiving cylinder with openings at the top and bottom is suspended from the weight sensor by the support. The opening and closing drive, the opening and closing baffle, and the swing arm are connected to the support. The output end of the opening and closing drive is connected to the opening and closing baffle through the swing arm, and the opening and closing baffle is movably mounted at the lower opening of the receiving cylinder.

[0013] Based on the above technical solution, a guide wire frame for constraining the installation of air pipes is provided on one side of the frame.

[0014] Based on the above technical solution, a hopper with a wider top and narrower bottom is provided below the weighing module. The hopper is used to receive the tea leaves output by the weighing module.

[0015] Based on the above technical solution, the hopper is equipped with a buffer belt and a deceleration curtain.

[0016] The beneficial effects of this utility model are:

[0017] This invention, by incorporating a leak-proof groove at the bottom of the hopper, corresponding to the bottom structure of the conveyor belt, effectively prevents tea leaves from scattering due to gaps between the tea leaves and the bottom of the conveyor belt at the feeding end. This ensures the tea leaves fall accurately into the receiving trough, improving the accuracy of dispensing and reducing tea waste. Furthermore, by installing a cover plate above the conveyor belt, with positive and negative pressure air pipes on the cover plate, this invention allows the positive pressure air pipe to blow air towards the tea leaves in the receiving trough. This causes any small amount of tea dust mixed in with the tea dust to be blown up and suspended, then sucked away by the negative pressure air pipe, forming a tea dust removal mechanism. This effectively removes tea dust from the conveyor belt during tea transportation, preventing tea dust from participating in weighing and sorting, ensuring the quality of the finished tea product, and improving the product's market competitiveness. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure for weighing and separating tea leaves in one embodiment;

[0021] Figure 2 yes Figure 1 Side view;

[0022] Figure 3 This is a simplified structural diagram of the anti-leakage groove in one embodiment;

[0023] Figure 4 This is a structural diagram of the conveyor belt and track partitions;

[0024] Figure 5 This is a simplified diagram illustrating the working state of the positive pressure air pipe and the negative pressure air pipe during tea dust removal in one embodiment;

[0025] Figure 6 This is a structural diagram of the weighing module;

[0026] Figure 7 This is a simplified structural diagram of the hopper;

[0027] Figure 8 yes Figure 7 A schematic diagram of the middle buffer zone.

[0028] Figure label:

[0029] 100. Frame; 110. Wire guide frame; 120. Water receiving tank; 200. Conveyor belt; 210. Baffle; 220. Receiving tank; 300. Track partition; 400. Hopper; 410. Buffer platform; 420. Leak-proof tank; 500. Weighing module; 510. Receiving cylinder; 520. Support; 530. Weight sensor; 540. Base; 550. Opening and closing drive component; 560. Swing arm; 570. Opening and closing baffle; 600. Drop hopper; 610. Buffer belt; 611. Shaping sheet; 612. Membrane material; 620. Deceleration line curtain; 700. Cover plate; 710. Mounting hole; 720. Positive pressure air pipe; 730. Negative pressure air pipe. Detailed Implementation

[0030] 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, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0031] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] Reference Figures 1 to 8 As shown, this embodiment discloses a tea weighing and dispensing mechanism, including a frame 100. The frame 100 serves as the supporting framework for the entire mechanism, providing an installation base for other components. The frame 100 is constructed from aluminum alloy profiles welded into an internal skeleton, and externally encapsulated by aluminum plates. Viewed from the side, the frame 100 has an overall right-angled triangular structure with the hypotenuse pointing upwards.

[0033] The frame 100 has six parallel conveyor belts 200 on its inclined side. The conveyor belts 200 are inclined and each conveyor belt 200 is pivotally connected to the frame 100 via a shaft and bearings. Each conveyor belt 200 is independently connected to a stepper motor, which can drive the conveyor belt 200 to rotate in a stepping manner. During operation, the conveyor belt 200 located on the upper side moves from its bottom end to its top end, forming a lifting feeding section.

[0034] The conveyor belt 200 has several baffles 210 evenly spaced on its belt body. Adjacent baffles 210 form receiving grooves 220, which are used to hold and transport tea leaves. By rationally setting the spacing and height of the baffles 210, it can be ensured that each receiving groove 220 can stably carry a certain amount of tea leaves, achieving batch transport of tea leaves. In this embodiment, all conveyor belts 200 have the same specifications. In other embodiments, combinations of conveyor belts 200 with different widths or designs with different baffle heights can be used, thereby allowing different conveyor belts 200 to transport different amounts of tea leaves. This enables more flexible combinations to improve counterweight accuracy and efficiency.

[0035] Combination Figure 4 As shown, a track partition 300 is provided between adjacent conveyor belts 200, and the top of the track partition 300 is inverted "V" shape. This design not only separates adjacent conveyor belts 200 to prevent tea leaves from overflowing between them during transportation, but also guides and organizes the tea leaves during transportation, allowing them to enter the receiving trough 220 more orderly, thus improving the stability and accuracy of transportation.

[0036] A hopper 400 is located at the bottom of the conveyor belt 200 on the frame 100. The hopper 400 is used to store tea leaves to be weighed and sorted. The bottom of the hopper 400 is equipped with anti-leakage grooves 420 corresponding to the outer contour of the bottom end of each conveyor belt 200. When the conveyor belt 200 moves, it can lift and transport the tea leaves in the hopper 400 in batches. Combined with... Figure 3 As shown, a buffer platform 410 is provided at the bottom of the hopper 400. The function of the buffer platform 410 is to form a storage buffer area at the bottom of the hopper 400, preventing all the tea leaves from accumulating at the bottom of the hopper 400 and tilting towards the conveyor belt 200. This is beneficial for stable material control and discharge. It should be noted that the anti-leakage trough 420 has closed side walls on both sides as partitions, so that the bottom of each conveyor belt 200 is effectively and tightly wrapped by the anti-leakage trough 420. The design of the anti-leakage trough 420 can effectively prevent the tea leaves from leaking out of the gaps around the conveyor belt 200 during the upward flipping process at the bottom of the conveyor belt 200, ensuring that the tea leaves can accurately enter the receiving trough 220 and improve the accuracy of material discharge. The angle between the top of the buffer platform 410 and the anti-leakage trough 420 is an acute angle. During the upward flipping process at the bottom of the conveyor belt 200, the outer end of the baffle 210 is set to fit against the inner wall of the anti-leakage trough 420. This structure can further reduce the spillage of tea leaves during the transportation process, allowing the tea leaves to enter the receiving tank 220 more smoothly and improving the transportation efficiency.

[0037] A weighing module 500 is located on the top rear side of the frame 100, which can weigh the tea leaves fed into the conveyor belt 200. Figure 6As shown, the weighing module 500 includes a receiving cylinder 510, a support 520, a weight sensor 530, a base 540, an opening / closing drive 550, a swing arm 560, and an opening / closing baffle 570. The base 540 is connected and fixed to the frame 100, providing stable support for the entire weighing module 500. The weight sensor 530 is mounted on the base 540 and is used to accurately measure the weight of the tea leaves. The receiving cylinder 510, with its upper and lower openings, is suspended from the weight sensor 530 via the support 520 and is used to receive the tea leaves conveyed from the conveyor belt 200. The opening / closing drive 550, the opening / closing baffle 570, and the swing arm 560 are connected to the support 520. The opening / closing drive 550 is specifically a micro motor, and its output end is connected to the opening / closing baffle 570 via the swing arm 560. The opening / closing baffle 570 is hinged to the lower opening of the receiving cylinder 510. The opening and closing of the baffle 570 is controlled by the opening and closing drive component 550, which enables quantitative feeding of tea leaves and ensures that the weight of tea leaves in each package meets the requirements. The weighing module 500 is existing technology, and its specific structure and working principle will not be described in detail here. Those skilled in the art can select and implement it from existing technologies according to actual operating conditions.

[0038] like Figure 1 As shown, the frame 100, located above the conveyor belt 200, is also equipped with a cover plate 700. The cover plate 700 has two rows of vertically spaced mounting holes 710. The upper mounting hole 710 connects to a negative pressure air pipe 730, and the lower mounting hole 710 connects to a positive pressure air pipe 720. The positive pressure air pipe 720 and the negative pressure air pipe 730 are respectively connected to external air compression equipment. The working ends of the positive pressure air pipe 720 and the negative pressure air pipe 730 face the area of ​​the conveyor belt 200, forming a tea dust removal mechanism. Figure 5 As shown, during the tea conveying process, the positive pressure air pipe 720 can blow out high-pressure air of appropriate intensity to blow up the tea dust on the conveyor belt 200, while the negative pressure air pipe 730 generates negative pressure to suck away the blown-up tea dust, thereby effectively removing the tea dust from the conveyor belt 200, preventing the tea dust from participating in weighing and sorting, and ensuring the quality of the finished tea product. Combined with... Figure 4 As shown, during the tea dust removal process, even if a small amount of tea leaves are blown to the left and right sides, they will be effectively intercepted by the track partition 300 and slide back into the receiving slot 220 on their own.

[0039] One end of the cover plate 700 is hinged to the frame 100, and the other end is connected to the bracket of the frame 100 by a snap-fit ​​structure. This design facilitates the opening and closing of the cover plate 700 and makes it easy to maintain and clean the tea dust removal mechanism. The cover plate 700 has two rows of vertically spaced mounting holes 710. The upper mounting hole 710 connects to the negative pressure air pipe 730, and the lower mounting hole 710 connects to the positive pressure air pipe 720. This layout can more effectively blow and suck up the tea dust, improving the tea dust removal effect.

[0040] A wire guide frame 110 is provided on one side of the frame 100 for constraining the air pipes. The wire guide frame 110 can organize and fix the positive pressure air pipe 720 and the negative pressure air pipe 730 to prevent the air pipes from getting tangled and shaking during operation, and ensure the stable operation of the tea dust removal mechanism.

[0041] Below the weighing module 500 is a hopper 600 that is wider at the top and narrower at the bottom. The hopper 600 is used to receive the tea leaves output by the weighing module 500 and accurately guide the tea leaves to the subsequent packaging process, thereby improving the efficiency and accuracy of packaging.

[0042] Furthermore, in combination Figure 7 and Figure 8 As shown, the hopper 600 is equipped with a buffer zone 610 and a deceleration curtain 620 arranged opposite to each other. The buffer zone 610 includes a shaped sheet 611 made of aluminum sheet, the back of which is bonded to the inner wall of the hopper 600. A PU film 612 is connected below the shaped sheet 611. The shaped sheet 611 is bent into a wavy shape, causing the film 612 to form a wavy structure. Its function is to form an elastic buffer zone within the hopper 600, allowing the falling tea leaves to maintain a relatively intact structure and improving the quality of the finished product. Similarly, the deceleration curtain 620 is a wire harness structure made of plastic material, its top bonded to the inner wall of the hopper 600 on the opposite side of the buffer zone 610. The deceleration curtain 620 is inclined and located in the path of the falling tea leaves, which can decelerate the falling tea leaves, thus working with the buffer zone 610 to protect the integrity of the tea leaves.

[0043] To facilitate cleaning during maintenance, a water tank 120 is also provided at the bottom of the frame 100 to collect water used for rinsing the conveyor belt 200.

[0044] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tea leaf weighing and distributing mechanism, characterized in that, The system includes a frame (100), on which several parallel conveyor belts (200) are provided. The conveyor belts (200) are inclined, and several baffles (210) are evenly distributed on the belt body of the conveyor belts (200). Adjacent baffles (210) form a receiving groove (220), and adjacent conveyor belts (200) are provided with a track partition (300). The frame (100) is located at the bottom of the conveyor belts (200) and has a hopper (400). The bottom of the hopper (400) is provided with a leak-proof groove (420) corresponding to the outer contour of the bottom end of each conveyor belt (200). After the conveyor belts (200) move, they can lift and transport the tea leaves in the hopper (400) in batches. A weighing module (500) is provided on the rear side of the top of the conveyor belt (200) of the frame (100). The weighing module (500) can weigh the tea leaves input into the conveyor belt (200). A cover plate (700) is also provided on the frame (100) above the conveyor belt (200). Several mounting holes (710) are provided on the cover plate (700). Positive pressure air pipe (720) and negative pressure air pipe (730) are connected in the mounting holes (710). Positive pressure air pipe (720) and negative pressure air pipe (730) are respectively connected to external air compression equipment. The working ends of positive pressure air pipe (720) and negative pressure air pipe (730) face the area of ​​the conveyor belt (200) to form a tea dust removal mechanism.

2. The tea weighing and distributing mechanism according to claim 1, characterized in that, The top of the track partition (300) is inverted "V" shape.

3. The tea weighing and distributing mechanism according to claim 1, characterized in that, The bottom of the hopper (400) is provided with a buffer platform (410), and the angle between the buffer platform (410) and the top of the leak-proof groove (420) is an acute angle. During the process of the baffle (210) flipping and moving upward at the bottom of the conveyor belt (200), the outer end of the baffle (210) is fitted with the inner wall of the leak-proof groove (420).

4. The tea weighing and distributing mechanism according to claim 1, characterized in that, The cover plate (700) is hinged to the frame (100) at one end in the lateral direction, and has a snap-fit ​​connection structure to the frame (100) support at the other end.

5. The tea weighing and distributing mechanism according to claim 1, characterized in that, The cover plate (700) is provided with two rows of mounting holes (710) spaced apart vertically. The upper mounting hole (710) is connected to the negative pressure air pipe (730), and the lower mounting hole (710) is connected to the positive pressure air pipe (720).

6. The tea weighing and distributing mechanism according to claim 1, characterized in that, The weighing module (500) includes a receiving cylinder (510), a support (520), a weight sensor (530), a base (540), an opening and closing drive (550), a swing arm (560), and an opening and closing baffle (570). The base (540) is connected and fixed to the frame (100). The weight sensor (530) is set on the base (540). The receiving cylinder (510), which has openings at the top and bottom, is suspended on the weight sensor (530) through the support (520). The opening and closing drive (550), the opening and closing baffle (570), and the swing arm (560) are connected to the support (520). The output end of the opening and closing drive (550) is connected to the opening and closing baffle (570) through the swing arm (560). The opening and closing baffle (570) is movably set at the lower opening of the receiving cylinder (510).

7. The tea weighing and distributing mechanism according to claim 1, characterized in that, The frame (100) is provided with a guide frame (110) on one side for constraining the installation of the air pipe.

8. The tea weighing and distributing mechanism according to claim 1, characterized in that, The weighing module (500) is provided with a hopper (600) that is wider at the top and narrower at the bottom. The hopper (600) is used to receive the tea leaves output by the weighing module (500).

9. The tea weighing and distributing mechanism according to claim 8, characterized in that, The hopper (600) is equipped with a buffer belt (610) and a deceleration curtain (620).

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