A tea fruit shell breaking and screening device

Abstract

The present invention discloses a shell-breaking and screening device for oil tea fruit, comprising a shell-breaking component, a separation component and a screening component, wherein the shell-breaking component comprises a box body, the shell-breaking component further comprises a feeding roller rotatably connected to the upper part of the inner cavity of the box body, a plurality of strip grooves are evenly arranged on the side of the feeding roller, a cam divider is connected to one end of the feeding roller, the shell-breaking component further comprises a pressing plate slidably fitted inside the top of the box body and located directly above the feeding roller, a shaft rod is slidably fitted inside the lower part of the pressing plate, two shell-breaking knives are rotatably connected to the outer part of the shaft rod, and the two shell-breaking knives are symmetrically distributed below the two sides of the pressing plate, and the cross section of the shell-breaking knife is triangular. The shell-breaking component makes the broken fruit shells large in size and more complete, and has less debris, thereby improving the efficiency of tea seed screening, and the screen mesh that can be changed by the screening component improves the efficiency of screen mesh replacement.

Description

Technical Field

[0001] The invention relates to the technical field of oil-tea fruit processing, in particular to an oil-tea fruit shell breaking and screening device. Background Art

[0002] Camellia oleifera is a woody oil plant unique to my country. Camellia oleifera fruit consists of fruit shell (peel) and tea seeds. Tea seeds consist of tea seed shell and tea kernel. Fruit shell does not contain oil but contains lignin, pentosan, tannin and saponin, which are not conducive to oil processing and must be shelled and used for other purposes.

[0003] At present, the existing technology for shelling and sorting tea fruit is to screen the tea seeds through a sieve after breaking the husk. However, on the one hand, due to the large amount of broken debris, the husk with a similar size to the tea seed is not easy to be separated from the tea seed, which leads to low screening efficiency. On the other hand, the tea seeds of different sizes of tea fruits are also different in size, which requires manual replacement of the sieve with matching specifications, which is time-consuming and labor-intensive. Summary of the invention

[0004] In order to solve the problems in the prior art that there are many shell fragments, tea seed screening is difficult, and manual replacement of the screen is time-consuming and labor-intensive, the present invention provides a tea fruit shell breaking and screening device to solve the above problems.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A tea fruit shell breaking and screening device, comprising a shell breaking component, a separation component and a screening component, wherein the shell breaking component comprises a box body, a top side of the box body is rotatably connected with a hopper, the hopper is connected to the inner cavity of the box body through an inclined channel, a bearing is installed below one side of the hopper, an eccentric wheel 1 is abutted against the bottom of the outer ring of the bearing, and the central axis of the eccentric wheel 1 is correspondingly rotatably connected to the upper side of the box body;

[0007] The shell breaking assembly also includes a material-moving roller rotatably connected to the upper part of the inner cavity of the box body, a plurality of strip grooves are evenly arranged on the side of the material-moving roller, blades are installed in the middle of the strip grooves, one end of the material-moving roller is connected to a cam divider, and the input end of the cam divider is connected to motor 1.

[0008] As a preferred scheme of the present invention, the shell breaking assembly also includes a pressure plate that is slidably fitted inside the top of the box body and located directly above the material-moving roller, and a shaft rod is slidably fitted inside the lower part of the pressure plate, and the outer part of the shaft rod is rotatably connected to two shell breaking knives, and the two shell breaking knives are symmetrically distributed below the two sides of the pressure plate, the cross-section of the shell breaking knife is triangular, and the shell breaking knives are all serrated at the bottom of the triangle. When the shaft rod slides to the lowest point inside the pressure plate, the serrated structures of the two shell breaking knives naturally interfere with each other, and a top plate is provided above the pressure plate, and the top plate and the top of the pressure plate are connected by multiple springs, and a connecting rod 1 is rotatably connected to the middle of the top of the top plate, and an eccentric wheel 2 is rotatably connected to the top of the connecting rod 1, and a motor 2 is connected to the central axis of the eccentric wheel 2.

[0009] As a preferred solution of the present invention, the separation assembly includes a plurality of roller rods distributed in a V-shape below the inner cavity of the box body, and a plurality of elastic rubber rods are densely distributed around the side of the roller rods. One end of the plurality of roller rods is located outside the box body and is connected to the central axis of the eccentric wheel one through a synchronous belt, and one end of one of the roller rods is connected to motor three.

[0010] As a preferred solution of the present invention, the screening assembly includes a bracket arranged below the box body, an upper frame and a lower frame are respectively provided at the upper and lower parts of the bracket, the upper frame and the lower frame are parallel to each other, a through groove one is opened at both length sides of the upper frame, a through groove two is opened at both length sides of the lower frame, support rods are installed at the four corners of the upper frame, the lower parts of the support rods are respectively connected to the four corners of the lower frame, the top ends of the support rods are respectively connected to the four corners of the bracket through movable rods, a connecting rod two is rotatably connected to the middle part of one end of the lower frame, one end of the connecting rod two is rotatably connected to an eccentric wheel three, and the central axis of the eccentric wheel three is connected to a motor four.

[0011] As a preferred solution of the present invention, the screening assembly further comprises a screen, which is a closed annular structure that sequentially penetrates through slot 1 and through slot 2, and is evenly divided into n mesh parts with different mesh diameters around the periphery, and n is an even number;

[0012] Among them, the mesh part 1 and the mesh part n / 2+1 are in symmetrical positions around the screen, and when the mesh part 1 is in the middle of the upper frame, the mesh part n / 2+1 is just in the middle of the lower frame. At this time, the mesh diameter of the mesh part 1 should be larger than the diameter of the screened tea seeds, and the mesh diameter of the mesh part n / 2+1 should be smaller than the diameter of the screened tea seeds, and the settings of the remaining mesh parts are similar.

[0013] As a preferred solution of the present invention, multiple guide rollers are provided on the outer sides of both sides of the upper frame to rotate outward in sequence, and the two ends of the guide rollers are connected to the upper outer side of the support rod through supporting arms, and one end of one of the guide rollers is connected to a motor five, and multiple tensioning rollers with successively decreasing heights are provided on the outer sides of the lower frame to rotate outward in sequence, and the two ends of the tensioning rollers are connected to the lower outer side of the support rod through swing arms, wherein the inner ends of the swing arms are respectively connected to the lower outer side of the support rod in a corresponding rotation, and the tops of the swing arms are connected to springs two, and the tops of the springs two are connected to the middle of the support rod to press the swing arms downward;

[0014] Among them, after the screen passes through the through groove one, it passes through and around the top of the innermost guide roller, the bottom of the innermost tensioning roller, the top of the guide roller adjacent to the innermost guide roller, and so on, until it passes around the bottom of the outermost tensioning roller and enters the through groove two.

[0015] As a preferred solution of the present invention, an upper discharge chute is installed at one end of the upper frame away from the shell breaking assembly;

[0016] A lower discharge chute is installed at one end of the lower frame away from the shell breaking assembly;

[0017] Upper side plates are installed on both sides of the top of the upper frame.

[0018] As a preferred solution of the present invention, lower side panels are installed on both sides of the top of the lower frame;

[0019] An upper rear plate is installed on the top of one end of the upper frame located below the shell breaking assembly;

[0020] A lower rear plate is installed on the top of one end of the lower frame located below the shell breaking assembly.

[0021] The present invention drives the pressing plate to make up and down reciprocating motion. When the pressing plate moves downward rapidly, the serrated part of the shell breaking knife is first inserted into the top of the fruit shell. Then, when the pressing plate continues to move downward, the pressing plate has a certain thickness, so that the shell breaking knife is squeezed to separate to both sides, and the stability of separation is maintained under the action of the shaft rod, and then the fruit shell is broken with the cooperation of the bottom blade. At this time, the fruit shell is subjected to a single external force direction and a single action point, so that the fruit shell is broken more completely, avoiding the situation in the existing shell breaking technology that there are too many fruit shell fragments that are difficult to screen.

[0022] The present invention drives the roller rod to rotate so that the elastic rubber rod whips the broken tea fruit, thereby knocking out the tea seeds that have not been separated in the fruit shell, thereby achieving complete separation of the fruit shell and the tea seeds. By properly controlling the rotation speed of the motor three, the force of whipping the fruit shell is controlled to avoid excessive crushing of the fruit shell to produce more debris, thereby further improving the screening efficiency.

[0023] The present invention increases the applicability of the screening of tea seeds of different sizes by adding a closed annular screen, and increases the support structure of the screen. The structure also has an automatic adjustment function of the screen, thereby avoiding the existing manual replacement of the screen, which is time-consuming and labor-intensive, or the situation where the screening machine is fixed and has poor applicability to tea seeds of different sizes. The screen can be tightened, occupies little space, and is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0025] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0026] Figure 3 for Figure 1 Another perspective diagram of the structure;

[0027] Figure 4 It is a schematic diagram of the structure of the shell breaking assembly of the present invention;

[0028] Figure 5 It is a schematic diagram of the internal structure of the box of the present invention;

[0029] Figure 6 It is a schematic diagram of the structure of a part of the shell breaking assembly of the present invention;

[0030] Figure 7 It is a schematic diagram of the structure of the material-picking roller of the present invention;

[0031] Figure 8 for Figure 6 Schematic diagram of some structures in ;

[0032] Fig. 9 It is a schematic diagram of the structure of the pressing plate, the shaft rod and the shell breaking knife of the present invention;

[0033] Fig.10 It is a schematic diagram of the separation component structure of the present invention;

[0034] Fig.11 It is a schematic diagram of the structure of a partial screening component of the present invention;

[0035] Fig.12 for Fig.11 The enlarged schematic diagram of point B in the middle;

[0036] Fig.13 It is a schematic diagram of the assembly of the guide roller and the tensioning roller of the present invention;

[0037] Fig.14 It is a simplified schematic diagram of the division around the screen in an embodiment of the present invention.

[0038] Among them, 1. Shell breaking assembly; 101. Box; 102. Hopper; 103. Bearing; 104. Eccentric wheel 1; 105. Material feeding roller; 106. Blade; 107. Cam divider; 108. Press plate; 109. Shaft; 110. Shell breaking knife; 111. Top plate; 112. Spring 1; 113. Connecting rod 1; 114. Eccentric wheel 2; 2. Separation assembly; 201. Roller rod; 202. Elastic rubber rod; 3. Screening assembly; 301, bracket; 302, upper frame; 303, lower frame; 304, support rod; 305, through slot one; 306, through slot two; 307, screen; 308, guide roller; 309, tensioning roller; 310, connecting rod two; 311, eccentric wheel three; 312, upper discharge chute; 313, lower discharge chute; 314, upper side plate; 315, lower side plate; 316, upper rear plate; 317, lower rear plate. DETAILED DESCRIPTION

[0039] 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.

[0040] like Figure 1-Figure 14 As shown, the embodiment of the present invention provides a tea fruit shell breaking and screening device, including a shell breaking component 1, a separation component 2 and a screening component 3. In this embodiment, reference Figure 1 and Figure 3-Figure 5 The shell breaking assembly 1 includes a box body 101, a top side of the box body 101 is rotatably connected with a hopper 102, the hopper 102 is connected to the inner cavity of the box body 101 through an inclined channel, a bearing 103 is installed at the bottom of one side of the hopper 102, the bottom of the outer ring of the bearing 103 is in contact with an eccentric wheel 104, the central axis of the eccentric wheel 104 is rotatably connected to the top of the side of the box body 101, and the hopper 102 is driven by the eccentric wheel 104 to vibrate up and down continuously, so that the oil tea fruit can be smoothly delivered into the box body 101 through the inclined channel to avoid material blockage.

[0041] In this embodiment, reference Figure 6-7 The shell breaking assembly 1 also includes a feeding roller 105 rotatably connected to the upper part of the inner cavity of the box body 101, and a plurality of strip grooves are evenly arranged on the side of the feeding roller 105, and a blade 106 is installed in the middle of the strip grooves. One end of the feeding roller 105 is connected to a cam divider 107, and the input end of the cam divider 107 is connected to a motor 1.

[0042] In this embodiment, continue to refer to Figure 6 , and refer to Figure 8-9The shell breaking assembly 1 also includes a pressing plate 108 that is slidably fitted inside the top of the box body 101 and is located just above the material-pulling roller 105. A shaft rod 109 is slidably fitted inside the lower part of the pressing plate 108. The outer part of the shaft rod 109 is rotatably connected to two shell breaking knives 110, and the two shell breaking knives 110 are symmetrically distributed below the two sides of the pressing plate 108. The cross-section of the shell breaking knife 110 is triangular, and the shell breaking knife 110 is located at the bottom of the triangle and is set to be serrated. When the shaft rod 109 slides to the lowest point inside the pressing plate 108, the serrated structures of the two shell breaking knives 110 naturally conflict with each other. A top plate 111 is provided above the pressing plate 108, and the top plate 111 is connected to the top of the pressing plate 108 by a plurality of springs 112. A connecting rod 113 is rotatably connected to the top of the top plate 111, and an eccentric wheel 114 is rotatably connected to the top of the connecting rod 113. The central axis of the eccentric wheel 114 is connected to a motor 2.

[0043] First, the intermittent rotation of the feeding roller 105 can meet the stability requirement of feeding. When it stays at the hopper 102, the oil-tea fruit will enter the strip groove and arrange itself. When it stays under the pressing plate 108, the time requirement for the up and down movement of the pressing plate 108 can be met. At this time, the motor 2 drives the eccentric wheel 2 114 to rotate, and then under the action of the connecting rod 113, the pressing plate 108 is driven to do up and down reciprocating motion. When the pressing plate 108 moves downward quickly, the serrated part of the shelling knife 110 is first inserted into the top of the fruit shell, and then when the pressing plate 108 continues to move downward, due to the certain thickness of the pressing plate 108, the shelling knife 110 is squeezed. 10 is separated to both sides and maintains the stability of separation under the action of the shaft 109, and then the fruit shell is broken with the cooperation of the bottom blade 106, avoiding the situation in the existing shell breaking technology that there are too many fruit shell fragments and it is difficult to screen. Then the pressing plate 108 moves upward, and due to the effect of gravity, the shell breaking knives 110 on both sides will move downward relative to the pressing plate 108 under the guidance of the shaft 109 until their bottoms are again abutted against each other to achieve reset. By controlling the rotation cycle of the cam divider 107, the number of reciprocating movements of the pressing plate 108 can be increased or decreased when the material-picking roller 105 is stationary, thereby controlling the number of times the fruit shell is broken.

[0044] In addition, by controlling the mass of the shell-breaking knife 110, the depth of its insertion into the fruit shell when it falls is increased, thereby ensuring that the fruit shell can be smoothly separated later. When the fruit shell is lifted up together with the saw teeth of the shell-breaking knife 110, the shell-breaking knife 110 can be separated from the fruit shell and fall into the strip-shaped groove through the narrow cavity matched with the shell-breaking knife 110 inside the box 101.

[0045] In this embodiment, again refer to Figure 1-7 , and refer to Fig.10The separation component 2 includes a plurality of roller rods 201 distributed in a V-shaped position below the inner cavity of the box body 101, and a plurality of elastic rubber rods 202 are densely distributed around the side of the roller rod 201. One end of the plurality of roller rods 201 is located outside the box body 101 and is connected to the central axis of the eccentric wheel 104 through a synchronous belt, and one end of one of the roller rods 201 is connected to a motor 3.

[0046] After the shell is broken, the material-discharging roller 105 continues to rotate, and the oil-tea fruit with the shell broken inside is thrown down. When the motor three drives the roller rod 201 to rotate, the falling oil-tea fruit is whipped by the elastic rubber rod 202, so that the tea seeds that have not been separated in the shell are knocked out, and the shell and tea seeds are completely separated. By properly controlling the speed of the motor three, the force of whipping the shell can be controlled to avoid excessive shell breakage to produce more debris, which is beneficial to improving the efficiency of subsequent screening.

[0047] In this embodiment, again refer to Figure 1-2 , and refer to Figure 11-13 The screening component 3 includes a bracket 301 arranged below the box body 101, an upper frame 302 and a lower frame 303 are respectively arranged at the upper and lower parts of the bracket 301, the upper frame 302 and the lower frame 303 are parallel to each other, a through slot 1 305 is provided at both length sides of the upper frame 302, a through slot 2 306 is provided at both length sides of the lower frame 303, support rods 304 are installed at the four corners of the upper frame 302, the lower parts of the support rods 304 are respectively connected to the four corners of the lower frame 303, the tops of the support rods 304 are respectively connected to the four corners of the bracket 301 through movable rods, a connecting rod 2 310 is rotatably connected to the middle part of one end of the lower frame 303, an eccentric wheel 3 311 is rotatably connected to one end of the connecting rod 2 310, and a motor 4 is connected to the central axis of the eccentric wheel 311.

[0048] The motor 4 can drive the upper frame 302 and the lower frame 303 to vibrate through the connecting rod 2 310 and the eccentric wheel 311, so as to screen the fallen mixture.

[0049] In this embodiment, again refer to Figure 11-13 , and refer to Fig.14 The screening component 3 also includes a screen 307, which is a closed annular structure that sequentially penetrates the through groove 1 305 and the through groove 2 306, and is evenly divided into n mesh parts with different mesh diameters around the periphery, and n is an even number.

[0050] Among them, specific reference Fig.14The first mesh part and the n / 2+1 mesh part are in symmetrical positions around the screen 307, and when the first mesh part is in the middle of the upper frame 302, the n / 2+1 mesh part is just in the middle of the lower frame 303. At this time, the mesh diameter of the first mesh part should be larger than the diameter of the screened tea seeds, and the mesh diameter of the n / 2+1 mesh part should be smaller than the diameter of the screened tea seeds, and the settings of the remaining mesh parts are similar.

[0051] In short, the larger the tea fruit, the larger the tea seeds inside. Conversely, the smaller the tea seeds, the smaller the tea seeds. Obviously, in this case, meshes of different specifications are required for screening. Specifically in this embodiment, the mesh size inside the upper frame 302 needs to be coordinated with the mesh size inside the lower frame 303.

[0052] refer to Figure 11-12 In order to improve the practicality of the screen 307, that is, to increase its circumferential length, at this time, in order to make the screen 307 tight and occupy a small space, a support structure of the screen 307 should be added. At the same time, the structure also has an automatic adjustment function of the screen 307 to avoid the existing manual replacement of the screen, which is time-consuming and labor-intensive, or the screening machine mechanism is fixed, and the applicability to tea seeds of different sizes is not strong. Specifically, the outer sides of the upper frame 302 are rotated outward in sequence to be provided with a plurality of guide rollers 308, and their two ends are connected to the upper outer side of the support rod 304 through a support arm. One end of one of the guide rollers 308 is connected to a motor five, and the outer sides of the lower frame 303 are rotated outward in sequence to be provided with a plurality of tensioning rollers 309 whose heights decrease in sequence, and their two ends are connected to the lower outer side of the support rod 304 through a swing arm, wherein the inner ends of the swing arms are respectively connected to the lower outer side of the support rod 304, and the tops of the swing arms are connected to springs 2, and the tops of the springs 2 are connected to the middle of the support rod 304 to press the swing arms downward.

[0053] Among them, after the screen 307 passes through the through groove 1 305, it passes through and around the top of the innermost guide roller 308, the bottom of the innermost tensioning roller 309, the top of the guide roller 308 adjacent to the innermost guide roller 308, and so on, until it enters the through groove 2 306 after bypassing the bottom of the outermost tensioning roller 309.

[0054] An upper discharging chute 312 is installed at one end of the upper frame 302 away from the shell breaking assembly 1, and a lower discharging chute 313 is installed at one end of the lower frame 303 away from the shell breaking assembly 1. Upper side plates 314 are installed on both sides of the top of the upper frame 302, and lower side plates 315 are installed on both sides of the top of the lower frame 303. An upper rear plate 316 is installed on the top of one end of the upper frame 302 located below the shell breaking assembly 1, and a lower rear plate 317 is installed on the top of one end of the lower frame 303 located below the shell breaking assembly 1.

[0055] The method for using the oil-tea fruit shell breaking and screening device of the present invention comprises the following steps:

[0056] Step 1: pre-sort the tea fruits according to their diameters, adjust the screen 307 according to the diameters of the tea seeds of the tea fruits that are about to be shelled, and drive the guide roller 308 through the motor 5, and with the cooperation of the tensioning roller 309, drive the screen 307 to rotate until the mesh parts inside the upper frame 302 and the lower frame 303 meet the screening requirements.

[0057] Step 2, start motors 1 to 4, and guide the tea fruit into the hopper 102. Due to the drive of motor 3, the hopper 102 vibrates continuously, and the tea fruit is sent into the strip groove on the feeding roller 105 through the inclined channel. Motor 1 drives the feeding roller 105 to rotate intermittently through the cam divider 107, thereby transferring the tea fruit in the strip groove to the bottom of the pressing plate 108.

[0058] Step three, motor two drives eccentric wheel two 114 to rotate, and then drives pressing plate 108 to do up and down reciprocating motion under the action of connecting rod one 113. When pressing plate 108 moves downward quickly, the serrated part of shelling knife 110 is first inserted into the top of the fruit shell, and then when pressing plate 108 continues to move downward, since pressing plate 108 has a certain thickness, the shelling knife 110 is squeezed to both sides and separated, and the stability of separation is maintained under the action of shaft rod 109, and then the fruit shell is broken with the cooperation of bottom blade 106, avoiding the situation that too much fruit shell debris is difficult to screen in the existing shelling technology, and then pressing plate 108 moves upward, and due to the action of gravity, the shelling knives 110 on both sides will move downward relative to pressing plate 108 under the guidance of shaft rod 109 until their bottoms collide with each other again to achieve reset.

[0059] Step 4: When the material-discharging roller 105 continues to rotate, the tea fruit with broken shells inside can be thrown down. When the motor 3 drives the roller rod 201 to rotate, the falling tea fruit is whipped by the elastic rubber rod 202, so that the tea seeds that have not been separated in the shell are knocked out, thereby achieving complete separation of the shell and the tea seeds. By properly controlling the speed of the motor 3, the force of whipping the shell can be controlled to avoid excessive breakage of the shell to produce more debris.

[0060] Step five, the motor four drives the upper frame 302 and the lower frame 303 to vibrate through the connecting rod two 310 and the eccentric wheel three 311, so as to screen the fallen mixture. At this time, the part of the screen 307 in the upper frame 302 will screen out the large-sized fruit shells, and the small-sized fruit shells and tea seeds will fall onto the part of the screen 307 in the lower frame 303, so as to be screened, so as to achieve the separation of small-sized fruit shells and tea seeds. Since the fruit shells broken in the shell breaking component 1 are large in size and relatively complete, with less debris, the efficiency of tea seed screening is improved.

[0061] Step 6: Repeat steps 1 to 5. After changing the position of the screen 307, the shells of tea fruits of other sizes can be broken and screened.

[0062] 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 shell breaking and screening device, comprising a shell breaking component (1), a separation component (2) and a screening component (3), characterized in that: The shell breaking assembly (1) comprises a box body (101), a hopper (102) is rotatably connected to one side of the top of the box body (101), the hopper (102) is connected to the inner cavity of the box body (101) via an inclined passage, a bearing (103) is installed below one side of the hopper (102), the bottom of the outer ring of the bearing (103) abuts against an eccentric wheel (104), and the central axis of the eccentric wheel (104) is rotatably connected to the upper side of the box body (101); The shell breaking assembly (1) further comprises a material-moving roller (105) rotatably connected to the upper part of the inner cavity of the box body (101), a plurality of strip-shaped grooves are evenly arranged on the side surface of the material-moving roller (105), a blade (106) is installed in the middle of each strip-shaped groove, one end of the material-moving roller (105) is connected to a cam divider (107), and an input end of the cam divider (107) is connected to a motor 1; The shell breaking assembly (1) further comprises a pressure plate (108) which is slidably fitted inside the top of the box body (101) and is located directly above the material-dispensing roller (105); a shaft (109) is slidably fitted inside and below the pressure plate (108); two shell breaking knives (110) are rotatably connected to the outside of the shaft (109); and the two shell breaking knives (110) are symmetrically distributed below the two sides of the pressure plate (108); the cross-section of the shell breaking knives (110) is triangular, and the shell breaking knives (110) are all serrated at the bottom of the triangle. When the shaft (1 09) When sliding to the lowest point inside the pressure plate (108), the serrated structures of the two shell-breaking knives (110) naturally collide with each other, a top plate (111) is provided above the pressure plate (108), the top plate (111) and the top of the pressure plate (108) are connected via a plurality of springs (112), the middle of the top of the top plate (111) is rotatably connected to a connecting rod (113), the top of the connecting rod (113) is rotatably connected to an eccentric wheel (114), and the central axis of the eccentric wheel (114) is connected to a motor (2); The separation assembly (2) comprises a plurality of roller rods (201) distributed in a V-shape below the inner cavity of the box body (101), a plurality of elastic rubber rods (202) being densely distributed around the side of the roller rod (201), one end of the plurality of roller rods (201) being located outside the box body (101) and connected to the central axis of the eccentric wheel one (104) via a synchronous belt, and one end of one of the roller rods (201) is connected to a motor three; The screening assembly (3) comprises a support (301) arranged below the box body (101), an upper frame (302) and a lower frame (303) are respectively arranged at the upper and lower parts of the support (301), the upper frame (302) and the lower frame (303) are parallel to each other, a through groove 1 (305) is provided at both length sides of the upper frame (302), a through groove 2 (306) is provided at both length sides of the lower frame (303), and the upper frame (302) is provided with a plurality of through grooves (305). Support rods (304) are installed at the four corners, the lower parts of the support rods (304) are respectively connected to the four corners of the lower frame (303), the top parts of the support rods (304) are respectively connected to the four corners of the bracket (301) through movable rods, the middle part of one end of the lower frame (303) is rotatably connected to a connecting rod 2 (310), one end of the connecting rod 2 (310) is rotatably connected to an eccentric wheel 3 (311), and the central axis of the eccentric wheel 3 (311) is connected to a motor 4; The screening assembly (3) further comprises a screen (307), wherein the screen (307) is a closed annular structure that sequentially penetrates the first through slot (305) and the second through slot (306), and is evenly divided into n mesh parts with different mesh diameters around the periphery, where n is an even number; The first mesh part and the n / 2+1 mesh part are located at symmetrical positions around the sieve (307), and when the first mesh part is located in the middle of the upper frame (302), the n / 2+1 mesh part is located in the middle of the lower frame (303). At this time, the mesh diameter of the first mesh part should be larger than the diameter of the screened tea seeds, and the mesh diameter of the n / 2+1 mesh part should be smaller than the diameter of the screened tea seeds, and the settings of the remaining mesh parts are similar. The outer sides of the upper frame (302) are provided with a plurality of guide rollers (308) that rotate outward in sequence, and the two ends of the guide rollers are connected to the upper outer side of the support rod (304) through supporting arms, and one end of one of the guide rollers (308) is connected to a motor five, and the outer sides of the lower frame (303) are provided with a plurality of tensioning rollers (309) that rotate outward in sequence, and the two ends of the tensioning rollers (309) are connected to the lower outer side of the support rod (304) through swing arms, wherein the inner ends of the swing arms are respectively connected to the lower outer side of the support rod (304) in a corresponding manner, and the top of the swing arm is connected to a spring two, and the top of the spring two is connected to the middle of the support rod (304) to press the swing arm downward; After passing through the through groove one (305), the screen (307) sequentially passes through the top of the innermost guide roller (308), the bottom of the innermost tensioning roller (309), the top of the guide roller (308) adjacent to the innermost guide roller (308), and so on, until it passes through the bottom of the outermost tensioning roller (309) and enters the through groove two (306).

2. The oil-tea fruit shell breaking and screening device according to claim 1, characterized in that: An upper discharge chute (312) is installed at one end of the upper frame (302) away from the shell breaking assembly (1); A lower discharge chute (313) is installed at one end of the lower frame (303) away from the shell breaking assembly (1); Upper side plates (314) are installed on both sides of the top of the upper frame (302).

3. The oil-tea fruit shell breaking and screening device according to claim 2, characterized in that: Lower side plates (315) are installed on both sides of the top of the lower frame (303); An upper rear plate (316) is installed on the top of one end of the upper frame (302) located below the shell breaking assembly (1); A lower rear plate (317) is mounted on the top of one end of the lower frame (303) located below the shell breaking assembly (1).

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