Fresh tea leaf grading equipment

Abstract

The utility model discloses fresh tea grading equipment and belongs to the technical field of screening equipment. The tea leaf screening device solves the problems that at present, the steps of screening impurities in fresh tea leaves and screening grades are complex, and the output efficiency is low. A machine shell is fixed to the ground through a supporting frame, a feeding opening is formed in the machine shell, a slag discharging plate and a conveying mechanism are arranged in a grading cavity, the machine shell, a back plate and a slag discharging hopper are connected in a matched mode to form the grading cavity, the conveying mechanism is arranged below the slag discharging plate, and an air supply mechanism is arranged on the back plate. The output end of the air supply mechanism penetrates through the back plate to be arranged in the grading cavity, a motor is installed on the supporting frame, an output shaft of the motor penetrates through the machine shell to be connected with the material conveying mechanism, the machine shell is arranged in an inclined state, and the inclination angle ranges from 20 degrees to 25 degrees. According to the fresh tea leaf grading equipment, impurity screening and quality grading can be carried out on fresh tea leaves at the same time, and the output efficiency and the output quality of tea leaf screening are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of screening equipment, in particular to fresh tea grading equipment. Background Art

[0002] Fresh tea leaves refer to fresh leaves from tea trees that have just been picked. At this time, the tea leaves retain their original moisture and active ingredients. These fresh leaves are usually used to make various types of tea, such as green tea, white tea, oolong tea and black tea.

[0003] When fresh tea is processed, it is graded according to characteristics such as leaf size, completeness, age and origin. Grading in the tea industry is conducive to regulating product quality, standardizing production and trading. It also helps consumers understand product quality and can reflect the actual value of different teas.

[0004] The same batch of fresh tea leaves needs to be sorted by size, and impurities in the fresh tea leaves need to be removed, especially for hand-picked tea leaves, which contain impurities such as broken leaves and broken stems that need to be removed. At present, the classification of fresh tea leaves and the screening of impurities generally adopt the method of manual screening, which has good effect but low output efficiency. The method of mechanical screening is cumbersome and needs to screen the impurities first, and then screen the grade of fresh tea leaves. It is relatively difficult to screen the impurities and grade the tea leaves at the same time.

[0005] Therefore, the present application proposes a fresh tea grading device that can simultaneously perform impurity screening and grade screening to solve the above problems. Utility Model Content

[0006] The purpose of the research and development of the utility model is to solve the problem that the current screening of impurities in fresh tea leaves and the screening steps of grades are relatively complicated and the output efficiency is low. A brief overview of the utility model is given below to provide a basic understanding of certain aspects of the utility model. It should be understood that this overview is not an exhaustive overview of the utility model. It is not intended to determine the key or important parts of the utility model, nor is it intended to limit the scope of the utility model.

[0007] The technical solution of this utility model:

[0008] A fresh tea grading device comprises a casing, a support frame, a back plate, a slag discharge bucket, an air supply mechanism, a feeding mechanism and a slag discharge plate. The casing is fixed to the ground through the support frame, a feeding port is processed on the casing, a grading cavity is provided with a slag discharge plate and a feeding mechanism, the casing, the back plate and the slag discharge bucket are cooperatively connected to form a grading cavity, the feeding mechanism is arranged below the slag discharge plate, an air supply mechanism is arranged on the back plate, an output end of the air supply mechanism passes through the back plate and is arranged in the grading cavity, a motor is installed on the support frame, an output shaft of the motor passes through the casing and is connected to the feeding mechanism, the casing is arranged in an inclined state, and the inclination angle range is between 20° and 25°.

[0009] Furthermore, a lifting frame is provided on the support frame, and the motor is installed on the lifting frame. The feeding mechanism includes a driving rotating shaft, a driven rotating shaft and a transmission belt. The driving rotating shaft and the driven rotating shaft are respectively rotatably installed in the casing. The driving rotating shaft and the driven rotating shaft are connected through the transmission belt. The transmission belt is arranged parallel to the slag discharge plate. The transmission belt is a mesh transmission belt. The execution end of the motor passes through the casing to establish a connection with the driving rotating shaft.

[0010] Furthermore, the air supply mechanism includes an air pump, an air supply pipe and an air supply branch pipe. The air pump is installed on the back plate. The air outlet of the air pump is connected to the air supply pipe. The air supply pipe is connected to multiple air supply branch pipes. An air supply port is provided on the back plate, and the other end of the air supply branch pipe is connected to the air supply port.

[0011] Furthermore, an inclined plate is installed on the inner side of the back plate, and the inclined plate is arranged above the conveyor belt.

[0012] Furthermore, a first material guide plate and a second material guide plate are installed on the casing, the first material guide plate is arranged above the second material guide plate, the first material guide plate is arranged at the end of the slag discharge plate, and the second material guide plate is arranged below the driven rotating shaft.

[0013] Furthermore, a scraper and a brush are installed at the bottom of the slag discharge plate, and the scraper and the brush are arranged in sequence above the conveyor belt. The distance between the scraper and the conveyor belt ranges from 20mm to 25mm, and the distance between the brush and the conveyor belt ranges from 15mm to 20mm.

[0014] The utility model has the following beneficial effects:

[0015] The utility model discloses a fresh tea grading device which blows out broken leaves and broken stems in the input fresh tea leaves by means of air blowing, and then grades the fresh tea leaves by screening through a feeding mechanism, thereby achieving two tasks of impurity screening and grade screening of the fresh tea leaves in one operation, thereby improving the output efficiency of the fresh tea leaves and simplifying the screening steps of the fresh tea leaves.

[0016] The utility model discloses a fresh tea grading device, which is provided with a scraper and a brush at the bottom of the slag discharge plate, so as to flatten and clean the tea leaves on the conveyor belt of the conveying mechanism, thereby further improving the sieving effect and quality of the fresh tea leaves. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of a fresh tea grading device;

[0018] Figure 2 It is a side view of a fresh tea grading device;

[0019] Figure 3 It is a half-section view of a fresh tea grading device;

[0020] Figure 4 It is a schematic diagram of the structure of the back panel;

[0021] Figure 5 It is a schematic diagram of the slag discharge plate.

[0022] In the figure: 1-housing, 2-feeding port, 3-support frame, 4-back plate, 5-slag bucket, 6-motor, 7-air supply mechanism, 8-feeding mechanism, 9-slag discharge plate, 11-first guide plate, 12-second guide plate, 31-lifting frame, 41-air supply port, 42-inclined plate, 71-air pump, 72-air supply pipe, 73-air supply branch pipe, 81-driving shaft, 82-driven shaft, 83-transmission belt, 91-scraper, 92-brush. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is described below by specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0024] The connection mentioned in the present utility model is divided into fixed connection and detachable connection. The fixed connection (i.e., non-detachable connection) includes but is not limited to conventional fixed connection methods such as folding connection, rivet connection, bonding connection and welding connection. The detachable connection includes but is not limited to conventional detachable methods such as threaded connection, snap connection, pin connection and hinge connection. When the specific connection method is not clearly defined, it is assumed that at least one connection method can always be found in the existing connection methods to achieve the function. Those skilled in the art can choose according to their needs. For example: welding connection is selected for fixed connection, and hinge connection is selected for detachable connection.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Embodiment 1, combination Figure 1-Figure 5 The present embodiment is described. A fresh tea grading device of the present embodiment comprises a casing 1, a support frame 3, a back plate 4, a slag discharge bucket 5, an air supply mechanism 7, a feeding mechanism 8 and a slag discharge plate 9. The casing 1 is fixed to the ground through the support frame 3. A feeding port 2 is processed on the casing 1. A slag discharge plate 9 and a feeding mechanism 8 are arranged in the grading cavity. The casing 1, the back plate 4 and the slag discharge bucket 5 are connected with each other to form a grading cavity. The feeding mechanism 8 is arranged below the slag discharge plate 9. An air supply mechanism 7 is arranged on the back plate 4. The output end of the air supply mechanism 7 passes through the back plate 4 and is arranged in the grading cavity. A motor 6 is installed on the support frame 3. The output shaft of the motor 6 passes through the casing 1 to establish a connection with the feeding mechanism 8. The casing 1 is arranged in an inclined state, and the inclination angle range is between 20° and 25°.

[0027] The casing 1 is fixed to the ground by a support frame 3. The casing 1 is arranged at an inclined angle to facilitate the transportation of tea leaves in the grading chamber. Fresh tea leaves are put into the grading chamber from the feeding port 2 on the casing 1. Fresh tea leaves are full of water and are heavier than impurities. Before putting in fresh tea leaves, the air pump 71 installed on the back plate 4 is turned on. The air pump 71 blows air into the grading chamber through the air delivery pipe 72 and the air supply branch pipe 73. During the falling process of the fresh tea leaves, the broken leaves, broken branches and other impurities are blown onto the slag discharge plate 9 through the air delivery port 41 on the back plate 4. The rest of the tea leaves are blown onto the slag discharge plate 9. The leaves fall on the conveyor belt 83 of the conveying mechanism 8, and the motor 6 installed on the lifting frame 31 of the support frame 3 is turned on. The active rotating shaft 81 is driven to rotate by the motor 6. When the active rotating shaft 81 rotates, the driven main shaft 82 is driven to rotate through the conveyor belt 83 to convey the fresh tea leaves outward. The conveyor belt 83 is a mesh conveyor belt. In the process of outputting tea leaves, tea leaves with smaller leaves and less integrity fall into the slag discharge bucket 5 through the mesh of the conveyor belt 83, and are finally discharged from the slag discharge bucket 5. The remaining intact and higher-grade tea leaves are discharged from the conveyor belt 83.

[0028] The slag discharge plate 9 is arranged parallel to the feeding mechanism 8 and is also inclined at a certain angle relative to the horizontal plane. A scraper 91 and a brush 92 are also provided at the bottom of the slag discharge plate 9. The distance between the scraper 91 and the conveyor belt 83 is 20 mm, and the distance between the brush 92 and the conveyor belt 83 is 15 mm. During the transmission of the conveyor belt 83, in order to avoid the accumulation of tea leaves on the conveyor belt 83, the tea leaves on the conveyor belt 83 are first flattened by the scraper 91 to improve the screening effect of the mesh conveyor belt, and then the dust or broken branches and leaves attached to the complete tea leaves on the conveyor belt 83 are brushed off by the brush 92 behind the scraper 91 to improve the quality of the fresh tea leaves produced.

[0029] The inner wall of the back plate 4 is also provided with an inclined plate 42, which has a certain buffering effect. Since the conveyor belt 83 cannot be completely fitted with the back plate 4, during the falling process of the tea leaves, some of the tea leaves will directly fall into the slag discharge hopper 5 through the gap between the conveyor belt 83 and the back plate 4. After the inclined plate 42 is installed, the tea leaves will fall on the inclined plate 42 and then fall on the conveyor belt 83. The housing 1 is also provided with a first guide plate 11 and a second guide plate 12. The first guide plate 11 is used to collect impurities discharged by the slag discharge plate 9, and the second guide plate 12 is used to collect fresh tea leaves discharged from the conveyor belt 83 after screening.

[0030] This embodiment is only an illustrative description of the present application and does not limit its protection scope. Those skilled in the art may also make partial changes thereto, and as long as they do not exceed the spirit of the present application, they are all within the protection scope of the present application.

Claims

1. A fresh tea grading device, characterized in that: The invention comprises a casing (1), a support frame (3), a back plate (4), a slag discharge bucket (5), an air supply mechanism (7), a feeding mechanism (8) and a slag discharge plate (9); the casing (1) is fixed to the ground through the support frame (3); a feeding port (2) is processed on the casing (1); a slag discharge plate (9) and a feeding mechanism (8) are arranged in a grading cavity; the casing (1), the back plate (4) and the slag discharge bucket (5) are connected to form a grading cavity; the feeding mechanism (8) is arranged below the slag discharge plate (9); an air supply mechanism (7) is arranged on the back plate (4); an output end of the air supply mechanism (7) passes through the back plate (4) and is arranged in the grading cavity; a motor (6) is installed on the support frame (3); an output shaft of the motor (6) passes through the casing (1) and is connected to the feeding mechanism (8); the casing (1) is arranged in an inclined state; and the inclination angle ranges between 20° and 25°.

2. A fresh tea grading device according to claim 1, characterized in that: The support frame (3) is provided with a lifting frame (31), the motor (6) is mounted on the lifting frame (31), the feeding mechanism (8) comprises a driving rotating shaft (81), a driven rotating shaft (82) and a transmission belt (83), the driving rotating shaft (81) and the driven rotating shaft (82) are respectively rotatably mounted in the casing (1), the driving rotating shaft (81) and the driven rotating shaft (82) are connected via the transmission belt (83), the transmission belt (83) is arranged in parallel with the slag discharge plate (9), the transmission belt (83) is a mesh transmission belt, and the execution end of the motor (6) passes through the casing (1) to establish a connection with the driving rotating shaft (81).

3. A fresh tea grading device according to claim 2, characterized in that: The air supply mechanism (7) comprises an air pump (71), an air supply pipe (72) and an air supply branch pipe (73); the air pump (71) is mounted on the back plate (4); the air outlet of the air pump (71) is connected to the air supply pipe (72); the air supply pipe (72) is connected to a plurality of air supply branch pipes (73); an air supply port (41) is provided on the back plate (4); and the other end of the air supply branch pipe (73) is connected to the air supply port (41).

4. A fresh tea grading device according to claim 3, characterized in that: An inclined plate (42) is installed on the inner side of the back plate (4), and the inclined plate (42) is arranged above the conveyor belt (83).

5. A fresh tea grading device according to claim 2, characterized in that: A first material guide plate (11) and a second material guide plate (12) are mounted on the casing (1); the first material guide plate (11) is arranged above the second material guide plate (12); the first material guide plate (11) is arranged at the end of the slag discharge plate (9); and the second material guide plate (12) is arranged below the driven rotating shaft (82).

6. A fresh tea grading device according to claim 2, characterized in that: A scraper (91) and a brush (92) are installed at the bottom of the slag discharge plate (9); the scraper (91) and the brush (92) are arranged in sequence above the conveyor belt (83); the distance between the scraper (91) and the conveyor belt (83) is in the range of 20 mm to 25 mm, and the distance between the brush (92) and the conveyor belt (83) is in the range of 15 mm to 20 mm.

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