Pretreatment production line and method of camellia oleifera fruits

Abstract

The invention belongs to the technical field of camellia oleifera fruit processing, and discloses a camellia oleifera fruit pretreatment production line which comprises a screening cylinder and further comprises a first-stage rolling module, a second-stage rolling module, a third-stage rolling module, a fourth-stage rolling module and a fifth-stage rolling module. The pulse impact module is arranged below the primary rolling module and is used for receiving the camellia oleifera fruits and carrying out secondary separation on the camellia oleifera fruits; the separation chamber is arranged below the pulse impact module and is used for separating a shell and seed mixture; wherein the primary rolling module comprises a rolling chamber and a rolling cylinder arranged in the rolling chamber, and the distances between the periphery of the rolling chamber and the inner wall of the rolling cylinder are different. According to the invention, camellia oleifera fruit seeds and shells are separated or loosened through rolling and rolling. The camellia oleifera fruit seeds and shells with greatly reduced viscosity enter the pulse air pressure module, are thoroughly separated through vibration and impact, and are finally separated through screening of the separation chamber. Compared with a common expansion type huller, the expansion type huller has the advantages of being high in processing speed and processing quality.

Description

Technical Field

[0001] The invention belongs to the technical field of camellia oleifera processing, and in particular relates to a pre-treatment production line and method for camellia oleifera. Background Art

[0002] In the past, after the oil tea fruit was picked, it was necessary to rely on pure manual processing, and a large number of sites had to be rented for work, which was very costly. At present, after the oil tea fruit is picked manually, it is first dried, cleaned, screened, dried, shelled, separated and other processes are carried out. The shelling is carried out by an expansion shelling machine, which is also one of the commonly used equipment for shelling crops or nuts. For example, the application number is CN202010781378.5 invention patent. When the expansion shelling machine is working, it is necessary to insert the expansion needle into the oil tea, and then expand to open the oil tea fruit, causing the nuts in it to fall off. The main disadvantages of this method are that the cracks on the cracks of the oil tea after it is dried are biological cracks produced by its natural growth. Drying causes the cracks to be highlighted and cracked, and it cannot guarantee that the direction of the cracks of each oil tea fruit is completely regular, and the growth pattern of the oil tea fruit itself is also difficult to guarantee the regularity, so the position where the expansion needle enters cannot be guaranteed to be the crack area of ​​the oil tea fruit. Therefore, there are many tea fruits that have not been shelled.

[0003] After the bulging and shelling, the tea fruit also needs to be vibrated and screened. During the vibrating and screening process, the tea seeds attached to the inner wall of the shell will fall off and be filtered and separated. If the bulging needle fails in the previous process, the vibration screen will not be able to peel off the tea seeds stored inside the shell. Therefore, the present application proposes a pre-treatment production line and method for tea fruit to overcome the above-mentioned defects. Summary of the invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a tea fruit pre-treatment production line and method.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pre-treatment production line and method for tea fruit, comprising a screening cylinder, and further comprising:

[0006] A first-level rolling module receives the tea fruit conveyed from the screening cylinder;

[0007] A pulse impact module is arranged below the primary kneading module and is used to receive the oil tea fruit and perform secondary separation on it;

[0008] A separation chamber is provided below the pulse impact module and is used to separate the mixture of husk and seed;

[0009] The first-level kneading module comprises a kneading chamber and a kneading cylinder arranged in the kneading chamber, the outer periphery of the kneading chamber and the inner wall of the kneading cylinder are at different distances, the maximum distance does not exceed the diameter of the oil tea fruit entering the kneading chamber, and the distance can be adjusted with the pressure applied to the inner wall of the kneading chamber;

[0010] The screening cylinder screens the tea fruits into multiple levels according to their sizes, and the rolling chamber is provided with a plurality of tea fruits corresponding to the sizes of each level, and the maximum distance between the rolling chamber and the rolling cylinder at each level changes linearly step by step.

[0011] Preferably, the screening cylinder further comprises a drop box arranged at the bottom, the drop box is located below each level of screening cylinder of the screening cylinder, and each drop box is provided with a lifting mechanism for conveying the screened tea fruit to each level of the kneading chamber respectively.

[0012] Preferably, the inner wall of the kneading chamber includes a plurality of groups of conflicting components equidistantly arranged thereon, and the conflicting components include a conflicting plate hinged on the inner wall of the kneading chamber and a rotating plate connected to the conflicting plate;

[0013] The contact plate and the rotating plate are both arc-shaped plates, the rotating plate extends through the kneading chamber to an output end externally hinged with a buffer oil cylinder movably installed outside the kneading chamber, and the arc center of the rotating plate is the hinge point of the contact plate;

[0014] The distance between the abutment plate and the outer periphery of the kneading cylinder gradually decreases along the conveying direction of the oil-tea fruit.

[0015] Preferably, a leakage hole is opened in the middle of the kneading chamber, and the caliber of the leakage hole increases gradually from top to bottom;

[0016] The first-stage kneading module also includes a conveying mechanism 1 arranged directly below the leak hole.

[0017] Preferably, a plurality of convex ridges are evenly distributed on the outside of the kneading cylinder, and the convex ridges are in sliding contact with the inner wall of the kneading chamber.

[0018] Preferably, the primary kneading module and the pulse impact module are connected through a connecting chamber, and the pulse impact module comprises a bottom plate, which is arranged in an inner cavity obliquely arranged in the pulse impact module and divides the pulse impact module into two upper and lower chambers;

[0019] A high-pressure gas tank is disposed in the lower chamber of the pulse impact module;

[0020] A two-stage arc-shaped cavity is arranged on the bottom plate, an air passage is opened at the bottom of the arc-shaped cavity, and the high-pressure gas tank is connected with the air passage through a solenoid valve, an air pipe and a high-pressure chamber;

[0021] The pulse impact module also includes an impact plate obliquely arranged above the bottom plate and an air pump fixedly installed on the outside of the pulse impact module for supplying air to the high-pressure gas tank.

[0022] Preferably, the air passage is directed perpendicularly to the bottom surface of the impact plate.

[0023] Preferably, the separation chamber is connected to the outlet of the pulse impact module, and the inner cavity of the separation chamber is divided into two inner cavities for separating the oil tea shell and the seed by a partition;

[0024] A fan is arranged on the outer wall of the separation chamber to convey horizontal airflow to the inner cavity of the separation chamber. A conveying mechanism 2 is arranged in the inner cavity of the separation chamber close to the fan to convey tea seeds. The conveying direction of the conveying mechanism 2 is consistent with that of the conveying mechanism 1.

[0025] Preferably, an air collecting hood is provided inside the separation chamber, which covers the air outlet of the fan, and an air outlet in the same direction as the fan is opened on the separation chamber.

[0026] A pre-treatment method for tea fruit is as follows:

[0027] After the oil tea fruit is picked and cleaned and dried, it is dried again at a temperature of -°C for -h, and the oil tea fruit that has been dried and cracked is sent to a screening cylinder for size separation and screening;

[0028] After separation and screening, the oil tea fruits fall into the drop box and are classified by size. The oil tea fruits in each drop box enter the rolling chambers of each level through the lifting mechanism. The smaller the diameter of the oil tea fruit entering the rolling chamber, the smaller the distance between the rolling chamber and the outer circumference of the rolling cylinder, and vice versa.

[0029] The tea fruit after rolling and squeezing naturally falls into the pulse impact module and enters the arc-shaped cavity. The airway is intermittently turned on by the high-frequency electromagnetic valve to eject air upwards to lift the rolled tea fruit and impact it onto the impact plate, thereby separating the seeds and shells inside.

[0030] The mixture of seeds and shells enters the separation chamber and is separated by wind from the fan into two inner chambers for separation. The seeds are transported away by the conveying mechanism 2.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The present invention sends the tea fruit to the first-level kneading module after preliminary screening. The first-level kneading module is transported along the circumferential direction of the kneading chamber due to the differential displacement between the kneading chamber and the kneading cylinder. The small spacing between the kneading chamber and the kneading cylinder will exert pressure on the tea fruit, thereby shrinking the volume and rolling and kneading to separate the tea fruit seeds from the shells, or loosen them. The tea fruit seeds and shells with greatly reduced viscosity enter the pulse air pressure module, are completely separated by shock and impact, and are finally separated by screening in the separation chamber. Compared with general expansion shelling machines, it has higher processing speed and processing quality.

[0033] The invention reserves a through gap at the connection end of the contact plate and the rotating plate close to the outer periphery of the kneading cylinder, which is much smaller than the particle size of the oil-tea fruit. When the oil-tea fruit is pushed to the connection point by the rotation differential, it needs to have a large pressure on the contact plate to rotate it so as to open the opening, and the volume is compressed by the clamping force. Therefore, under the clamping of the contact plate and the outer periphery of the kneading cylinder on both sides, the oil-tea fruit is kneaded and compressed, so that the oil-tea fruit seeds therein fall off or relax, and the kneading and shelling effect is achieved.

[0034] The oil tea fruit in the pulse air pressure module of the present invention flows through the connection chamber and first enters the first-stage arc cavity. The solenoid valve is intermittently turned on, thereby generating a pulse high-pressure airflow therein, which is ejected from the airway and sprays the oil tea fruit in the arc cavity onto the impact plate for impact. The adhesion between the oil tea fruit shell and the seed has been loosened after kneading, and separation occurs after impact, forming a mixture of shell and seed that is discharged into the separation chamber together. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the structure of the present invention;

[0036] Figure 2 It is a schematic diagram of the internal configuration of the primary kneading module and the pulse impact module of the present invention;

[0037] Figure 3 It is a schematic diagram of the rear structure of the present invention;

[0038] Figure 4 For the present invention Figure 2 A magnified schematic diagram of part A;

[0039] Figure 5 For the present invention Figure 2 An enlarged schematic diagram of part B.

[0040] In the figure: 100, screening cylinder; 101, blanking box; 102, lifting mechanism; 200, primary kneading module; 201, kneading chamber; 2011, leakage hole; 202, kneading cylinder; 2021, convex ridge; 203, conveying mechanism one; 204, connecting chamber; 205, resistance component; 2051, resistance plate; 2052, rotating plate; 2053, buffer cylinder; 300, pulse impact module; 301, bottom plate; 3011, arc cavity; 3012, airway; 302, high-pressure gas tank; 303, solenoid valve; 304, air pipe; 305, high-pressure chamber; 306, impact plate; 307, air pump; 400, separation chamber; 401, fan; 402, air collecting hood; 403, conveying mechanism two; 404, shell collecting box; 405, air port. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] like Figures 1 to 5 As shown, the present invention provides a tea fruit pre-treatment production line and method, including a screening cylinder 100, and also including:

[0043] The first-stage rolling module 200 receives the tea fruit conveyed from the screening cylinder 100;

[0044] The pulse air pressure module 300 is disposed below the primary kneading module 200 and is used to receive the oil-tea camellia fruit for secondary separation;

[0045] The separation chamber 400 is disposed below the pulse air pressure module 300 and is used to separate the mixture of husk and seeds;

[0046] The first-stage rolling module 200 includes a rolling chamber 201 and a rolling cylinder 202 disposed in the rolling chamber 201. The distance between the outer periphery of the rolling chamber 201 and the inner wall of the rolling cylinder 202 is different. The maximum distance does not exceed the diameter of the oil tea fruit entering therein. The distance can be adjusted according to the pressure applied to the inner wall of the rolling chamber 201.

[0047] The screening cylinder 100 screens the camellia fruits into multiple grades according to their sizes. The rolling chamber 201 is provided with a plurality of camellia fruits corresponding to the sizes of each grade. The maximum distance between the rolling chamber 201 and the rolling cylinder 202 of each grade changes linearly step by step.

[0048] After the oil tea fruit is initially screened, it is sent to the primary rolling module 200. The primary rolling module 200 is transported along the circumferential direction of the rolling chamber 201 due to the differential rotation between the rolling chamber 201 and the rolling cylinder 202. The small distance between the rolling chamber 201 and the rolling cylinder 202 will compress the oil tea fruit, thereby shrinking the volume and rolling and rolling to separate the oil tea fruit seeds from the shells, or loosen them. The oil tea fruit seeds and shells with greatly reduced viscosity enter the pulse air pressure module 300, and are completely separated through shock and impact, and finally separated through screening in the separation chamber 400.

[0049] like Figure 2 As shown, the screening cylinder 100 also includes a drop box 101 arranged at the bottom, and the drop box 101 is located below each level of screening cylinder of the screening cylinder 100. Each drop box 101 is provided with a lifting mechanism 102 for conveying the screened tea fruit to each level of kneading chamber 201 respectively.

[0050] The above mechanism is used to transport the tea fruit to the shelling station. Each blanking box 101 is provided with a lifting mechanism 102 so that it can be transported to different kneading chambers 201.

[0051] like Figure 2 and Figure 4 As shown, the inner wall of the kneading chamber 201 includes a plurality of groups of conflicting components 205 equidistantly arranged thereon, and the conflicting components 205 include a conflicting plate 2051 hinged on the inner wall of the kneading chamber 201 and a rotating plate 2052 connected to the conflicting plate 2051;

[0052] The contact plate 2051 and the rotating plate 2052 are both arc-shaped plates. The rotating plate 2052 extends through the kneading chamber 201 to the output end of the buffer cylinder 2053 which is externally hinged and movably installed outside the kneading chamber 201. The arc center of the rotating plate 2052 is the hinge point of the contact plate 2051.

[0053] The distance between the abutment plate 2051 and the outer periphery of the kneading cylinder 202 gradually decreases along the conveying direction of the oil-tea fruit.

[0054] The connection end of the contact plate 2051 and the rotating plate 2052 is close to the outer circumference of the kneading cylinder 202, and the reserved through gap is much smaller than the particle size of the oil-tea fruit. When the oil-tea fruit is pushed to the connection point by the rotation differential, it needs to have a large pressure on the contact plate 2051 to rotate it so as to open the opening, and the volume is compressed by the clamping force. Therefore, under the clamping of the contact plate 2051 and the outer circumference of the kneading cylinder 202, the oil-tea fruit is kneaded and compressed, and the oil-tea fruit seeds therein fall off or relax, achieving the kneading and shelling effect.

[0055] The viscous blocking force in the buffer cylinder 2053 is relatively large, and the embodiment of the present application does not directly use an elastic connecting rod as a substitute. Since the deformation amplitude and force relationship of the elastic connecting rod are relatively linear, it often cannot provide a large clamping force, but instead becomes an elastic opening and closing door. However, the buffer cylinder 2053 has a hydraulic blocking effect and can provide a large pressure. And it can also be opened, which does not affect the passage of the oil tea fruit in the end, but improves the rolling performance.

[0056] like Figure 2 and Figure 4 As shown, a leakage hole 2011 is opened in the middle of the kneading chamber 201, and the caliber of the leakage hole 2011 increases gradually from top to bottom;

[0057] The first-stage kneading module 200 further includes a conveying mechanism 203 disposed directly below the leak hole 2011 .

[0058] The caliber of the leak hole 2011 is gradually increased from top to bottom mainly to prevent material jamming, so that the oil-tea camellia seeds that fall off after being kneaded can quickly fall down after passing through the top hole of the leak hole 2011, and prevent them from being retained in the hole and causing obstruction. In addition, the top calibers of the leak holes 2011 in different levels of kneading chambers 201 are different in size, and the size changes linearly. It is used to deal with the different larger or smaller oil-tea camellia seeds in the kneading chamber 201 of this level, so that they can fit through. The oil-tea camellia seeds that pass through the leak hole 201 fall onto the conveying mechanism 1 203 located below, and are transported into the collection area through the conveying mechanism 1 203.

[0059] like Figure 2 and Figure 4 As shown, a plurality of ridges 2021 are evenly distributed on the outside of the kneading cylinder 202 , and the ridges 2021 are in sliding contact with the inner wall of the kneading chamber 201 .

[0060] The ridge 2021 is used to push the tea fruit in the circumferential direction and push it to the outlet. At the same time, it rotates to the contact plate 2051 to force the contact plate 2051 to be pressed down, opening a larger channel opening to allow the tea fruit after rolling to pass quickly, and prevent accumulation and blockage. The ridge 2021 finally pushes the tea fruit along the rolling chamber 201 to the upper end of the connection chamber 204, and the tea fruit is finally pushed into the connection chamber 204 and then falls into the pulse air pressure module 300.

[0061] like Figure 2 and Figure 5 As shown, the primary kneading module 200 and the pulse air pressure module 300 are connected through the connecting chamber 204, and the pulse air pressure module 300 includes a bottom plate 301, which is arranged in an inner cavity of the pulse air pressure module 300 and is inclined to divide the pulse air pressure module 300 into two upper and lower chambers;

[0062] A high pressure gas tank 302, which is disposed in the lower chamber of the pulse gas pressure module 300;

[0063] A two-stage arc-shaped cavity 3011 is provided on the bottom plate 301, and an air passage 3012 is provided at the bottom of the arc-shaped cavity 3011. The high-pressure gas tank 302 is connected to the air passage 3012 through the solenoid valve 303, the air pipe 304 and the high-pressure chamber 305;

[0064] The pulse air pressure module 300 further includes an impact plate 306 obliquely disposed above the bottom plate 301 and an air pump 307 fixedly mounted on the outside of the pulse air pressure module 300 for supplying air to the high-pressure gas tank 302 .

[0065] The oil tea fruit flowing into the pulse air pressure module 300 through the connection chamber 204 will first enter the first-stage arc cavity 3011, and the arc cavity 3011 is connected to the high-pressure chamber 305 located below through the air channel 3012, and the high-pressure chamber 305 is connected to the high-pressure gas tank 302. The solenoid valve 303 is intermittently turned on, thereby generating a pulse high-pressure airflow therein, which is ejected from it through the air channel 3012, and the oil tea fruit in the arc cavity 3011 is sprayed onto the impact plate 306 for impact. The adhesion between the oil tea fruit shell and the seed has been loosened after kneading, and after the impact, they are separated, forming a mixture of shell and seed that is discharged into the separation chamber 400.

[0066] like Figure 5 As shown, the air passage 3012 is directed perpendicular to the bottom surface of the impact plate 306.

[0067] Making the air duct 3012 perpendicular to the bottom surface of the impact plate 306 is a preferred embodiment of the air duct 3012. The air duct 3012 deviates from the vertical direction, and the high-pressure airflow ejected therefrom will not lift the oil-tea fruit vertically, but will fly out in a parabolic trajectory toward the outlet side and impact the impact plate 306. After the impact, the oil-tea fruit will bounce toward the outlet direction without any reverse rebound to cause interference.

[0068] After the impact, the oil tea fruit ejected from the first arc cavity 3011 will fall into the second arc cavity 3011 due to the impact angle constraint, or fall onto the slide above the second arc cavity 3011 and then slide down into the second arc cavity 3011, thus impacting again. The oil tea fruit seeds originally in the first arc cavity 3011, due to their small size and large mass, will be ejected relatively farther due to their small force area and relatively large impact kinetic energy. Most of them will directly pass through the second arc cavity 3011 and be directly excluded, avoiding a second impact and reducing the space occupied by the second arc cavity 3011.

[0069] like Figure 2As shown, the separation chamber 400 is connected to the outlet of the pulse air pressure module 300, and the inner cavity of the separation chamber 400 is divided into two inner cavities for separating the oil tea shell and the seed by a partition;

[0070] A fan 401 is arranged on the outer wall of the separation chamber 400 to convey horizontal airflow to the inner cavity of the separation chamber 400. A conveying mechanism 2 403 is arranged in the inner cavity of the separation chamber 400 near the fan 401 for conveying tea seeds. The conveying direction of the conveying mechanism 2 403 is consistent with that of the conveying mechanism 1 203.

[0071] The mixture of tea husks and seeds separated by impact and vibration in the pulse air pressure module 300 falls along the connecting port, passes through the air outlet path, and the horizontal airflow blows away the light tea husks. Its trajectory is parabolic and falls to the shell collecting box 404 for unified collection, while the heavy tea seeds fall relatively vertically to the conveying mechanism 2 403 below and are conveyed out and collected together with the tea seeds conveyed from the conveying mechanism 1 203.

[0072] like Figure 2 As shown, an air collecting hood 402 is provided inside the separation chamber 400 , which covers the air outlet of the fan 401 , and an air inlet 405 which is horizontal and in the same direction as the fan 401 is opened on the separation chamber 400 .

[0073] The air collecting hood 402 is used to reduce the air outlet area of ​​the fan 401 and increase the pressure, so that the oil tea shells can be blown away by the greater wind pressure on the falling path, while the heavier oil tea seeds are not easily changed in their falling trajectory. The air port 405 is arranged to be aligned with the air outlet of the fan 401, so that the two sides of the separation chamber 400 are connected, and the air flow can be discharged in a straight line along the air port 405, avoiding the internal high pressure causing the air outlet pressure to decrease. In addition, the air port 405 can also prevent the oil tea shells from being blown out, playing a certain isolation role.

[0074] The pre-treatment method of the oil tea fruit cooperates with the above-mentioned oil tea fruit pre-treatment production line to realize the cooperation work. After the oil tea fruit is picked and cleaned and dried, it is dried again at a drying temperature of 50-60°C and continued to dry for 1-2 hours. Through a period of continuous baking, the moisture on the oil tea fruit shell is discharged, so that biological cracks appear on the surface of the oil tea fruit, and the adhesion between the seeds and the shell inside is reduced, which makes it easier to carry out the subsequent shelling process. The dried and cracked oil tea fruit is then sent to the screening cylinder 100 for size separation and screening; the screening cylinder 100 is a grid-type screening cylinder, and the spacing of the grid increases step by step along the screening direction, so that the oil tea fruit on the grid can pass through the grid according to its own different sizes and fall into the various levels of drop boxes located below, so as to achieve screening of different sizes.

[0075] After separation and screening, the tea fruits fall into the blanking box 101 and are classified by size. The tea fruits in each blanking box 101 enter the rolling chambers 201 at each level through the lifting mechanism 102. The rolling chambers 201 at each level correspond to the tea fruits in a blanking box, and the best rolling and separation effect can be achieved within the diameter range of the tea fruits. Generally, the distance between the inner wall of the rolling chamber 201 and the outer periphery of the rolling cylinder 202 is about 90% of the diameter of the tea fruits at most, which can ensure that the transportation of the tea fruits is not blocked and the transportation is smooth. The smaller the diameter of the tea fruits entering the rolling chamber 201, the smaller the distance between the rolling chamber 201 and the outer periphery of the rolling cylinder 202, and vice versa.

[0076] The rolled and squeezed tea fruit naturally falls into the pulse air pressure module 300 and enters the arc-shaped cavity 3011. The high-frequency intermittent conduction electromagnetic valve 303 causes the air passage 3012 to eject air upwards to lift the rolled tea fruit and impact it onto the impact plate 306, thereby separating the seeds and shells inside the fruit.

[0077] The mixture of seeds and shells enters the separation chamber 400 and is separated by wind power through the fan 401 and enters two inner cavities for separation. The seeds are transported away by the second transport mechanism 403.

[0078] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0079] Although embodiments of the present invention have been shown and described, it will be appreciated 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 that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tea fruit pre-treatment production line, comprising a screening cylinder (100), characterized in that: Also includes, A primary rolling module (200) receives the tea fruit conveyed from the screening cylinder (100); A pulse impact module (300) is arranged below the primary kneading module (200) and is used to receive the tea fruit and perform secondary separation on it; A separation chamber (400) is disposed below the pulse impact module (300) and is used to separate the husk and seed mixture; The first-stage kneading module (200) comprises a kneading chamber (201) and a kneading cylinder (202) arranged in the kneading chamber (201); the distance between the outer periphery of the kneading chamber (201) and the inner wall of the kneading cylinder (202) is different, and the maximum distance does not exceed the particle size of the tea fruit entering the kneading chamber, and the distance can be passively adjusted according to the pressure applied to the inner wall of the kneading chamber (201); The screening cylinder (100) screens the tea fruits into multiple grades according to their sizes, and the rolling chamber (201) is provided with a plurality of tea fruits corresponding to the sizes of each grade, and the maximum distance between the rolling chamber (201) and the rolling cylinder (202) of each grade changes linearly step by step.

2. The pre-treatment production line of camellia oleifera according to claim 1, characterized in that: The screening cylinder (100) further comprises a material drop box (101) arranged at the bottom, wherein the material drop box (101) is located below each level of the screening cylinder of the screening cylinder (100), and each of the material drop boxes (101) is provided with a lifting mechanism (102) for conveying the screened tea fruit to each level of the kneading chamber (201).

3. The pre-treatment production line of camellia oleifera according to claim 1, characterized in that: The inner wall of the kneading chamber (201) includes a plurality of groups of conflicting components (205) equidistantly arranged thereon, and the conflicting components (205) include a conflicting plate (2051) hingedly connected to the inner wall of the kneading chamber (201) and a rotating plate (2052) connected to the conflicting plate (2051); The contact plate (2051) and the rotating plate (2052) are both arc-shaped plates. The rotating plate (2052) passes through the kneading chamber (201) and extends to an output end externally hinged with a buffer oil cylinder (2053) movably mounted outside the kneading chamber (201). The arc center of the rotating plate (2052) is the hinge point of the contact plate (2051). The distance between the abutment plate (2051) and the outer periphery of the kneading cylinder (202) gradually decreases along the conveying direction of the oil-tea fruit.

4. The pre-treatment production line of camellia oleifera according to claim 3, characterized in that: A leakage hole (2011) is provided in the middle of the kneading chamber (201), and the caliber of the leakage hole (2011) increases gradually from top to bottom; The first-stage kneading module (200) further comprises a conveying mechanism 1 (203) arranged directly below the leak hole (2011).

5. The pre-treatment production line of camellia oleifera according to claim 4, characterized in that: A plurality of ridges (2021) are evenly distributed on the outside of the kneading cylinder (202), and the ridges (2021) are in sliding contact with the inner wall of the kneading chamber (201).

6. A tea fruit pretreatment production line according to any one of claims 2 to 5, characterized in that: The primary kneading module (200) and the pulse impact module (300) are connected via a connecting chamber (204), and the pulse impact module (300) comprises a bottom plate (301), wherein the bottom plate (301) is arranged in an inner cavity obliquely arranged in the pulse impact module (300) and divides the pulse impact module (300) into two upper and lower chambers; A high-pressure gas tank (302) is disposed in the lower chamber of the pulse impact module (300); The bottom plate (301) is provided with a two-stage arc-shaped cavity (3011), the bottom of the arc-shaped cavity (3011) is provided with an air passage (3012), and the high-pressure gas tank (302) is connected to the air passage (3012) via a solenoid valve (303), an air pipe (304) and a high-pressure chamber (305); The pulse impact module (300) further comprises an impact plate (306) obliquely arranged above the bottom plate (301) and an air pump (307) fixedly installed on the outside of the pulse impact module (300) for supplying air to the high-pressure gas tank (302).

7. The pre-treatment production line of camellia oleifera according to claim 6, characterized in that: The air channel (3012) is directed perpendicularly to the bottom surface of the impact plate (306).

8. The pre-treatment production line of camellia oleifera according to claim 7, characterized in that: The separation chamber (400) is in communication with the outlet of the pulse impact module (300), and the inner cavity of the separation chamber (400) is divided into two inner cavities for separating the oil tea shell and the seed by a partition; A fan (401) is arranged on the outer wall of the separation chamber (400) to convey horizontal airflow to the inner cavity of the separation chamber (400), and a conveying mechanism 2 (403) is arranged in the inner cavity of the separation chamber (400) close to the fan (401) for conveying tea seeds, and the conveying direction of the conveying mechanism 2 (403) is consistent with that of the conveying mechanism 1 (203).

9. The pre-treatment production line of camellia oleifera according to claim 8, characterized in that: An air collecting hood (402) is arranged inside the separation chamber (400) and covers the air outlet of the fan (401). An air inlet (405) is opened on the separation chamber (400) and is in the same direction as the fan (401).

10. A method for pre-processing camellia oleifera, using the camellia oleifera pre-processing production line as claimed in claim 9, characterized in that: After the harvested tea fruit is cleaned and dried, it is dried again at a temperature of 50-60° C. for 1-2 hours, and the tea fruit that has cracked after drying is sent to a screening cylinder (100) for size separation and screening; After separation and screening, the tea fruits fall into a material drop box (101) and are classified by size. The tea fruits in each material drop box (101) enter into various levels of rolling chambers (201) through a lifting mechanism (102). The smaller the diameter of the tea fruit entering the rolling chamber (201), the smaller the distance between the rolling chamber (201) and the outer circumference of the rolling cylinder (202), and vice versa. The tea fruit after being rolled and squeezed naturally falls into the pulse impact module (300) and enters the arc-shaped cavity (3011). The air passage (3012) ejects air upwards through the high-frequency intermittent conduction electromagnetic valve (303), lifting the rolled tea fruit and impacting it onto the impact plate (306), thereby separating the seeds and shells inside the tea fruit; The mixture of seeds and shells enters the separation chamber (400), is separated by wind power through the fan (401), and enters two inner cavities for separation. The seeds are transported away through the second transport mechanism (403).

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