A pepper screening device

Abstract

The present invention provides a sieving device for sieving stalks of ...

Description

Technical Field

[0001] The present application relates to pepper screening technology, and in particular to a pepper screening device. Background Art

[0002] Sichuan peppercorn is a plant of the genus Zanthoxylum in the Rutaceae family. It is often used as a condiment and medicinal ingredient. Compared with the common red peppercorn, it has a unique fragrance and numbing taste and is widely used in Sichuan cuisine.

[0003] When using peppercorns as raw materials to produce and process peppercorn oil, the peppercorn raw materials need to be screened first to remove fine particle impurities in the peppercorn raw materials to avoid affecting the extraction quality of the peppercorn oil in the subsequent extraction process; and the common peppercorn raw materials are multiple bundles of peppercorn plants connected by branches, and multiple peppercorn grains scattered from the peppercorn plants. If these peppercorn raw materials are directly subjected to vibration screening, they need to be screened in groups, and the screening efficiency is poor; and because the peppercorn plants have branches, the branches can provide a buffering effect during vibration screening, and the fine particle impurities adhering to the upper peppercorn plants are not easy to fall off, affecting the screening effect; at the same time, vibration screening can easily destroy the structure of the peppercorn grains, so that some of the effective ingredients in the peppercorn grains are screened out together with the impurities, which reduces the raw material utilization rate for preparing peppercorn oil. Summary of the Invention

[0004] In order to solve the above-mentioned defects of the related existing technologies, the present application provides a pepper screening device, which can improve the screening efficiency and screening effect, and avoid destroying the structure of the pepper grains during screening, and has strong practicality.

[0005] In order to achieve the above object, the present invention adopts the following technologies:

[0006] A pepper screening device, comprising:

[0007] The first-stage screening bin has mounting openings coaxially passed through its two end faces, and mounting plates are coaxially rotated in the mounting openings. A plurality of movable openings are passed through the mounting plates, and the movable openings are distributed in a circular array around the central axis of the mounting plates. The movable openings on the two mounting plates correspond to each other one by one, and a sliding rod is movably passed through each two corresponding movable openings. The rear end of the upward side wall of the first-stage screening bin is passed through with a material inlet, and the front end of the downward side wall is passed through with a first material outlet. The front end of the upward side wall of the first-stage screening bin is connected to a dust suction pipe connected to the first-stage screening bin;

[0008] The transition bin has an upper end connected to the downward side wall of the first-stage screening bin and communicated with the first-stage screening bin. The rear end of the transition bin is connected to an air intake pipe, and the air intake direction of the air intake pipe is set towards the dust collection pipe.

[0009] The upper end of the secondary screening bin is connected to the upper end of the transition bin and communicated with the transition bin. A fine screen plate is provided in the secondary screening bin for screening out impurities smaller than the size of the peppercorns. The fine screen plate is arranged directly below the connection between the secondary screening bin and the transition bin. The front end of the fine screen plate is tilted lower than the rear end. A second discharge port is passed through the front end surface of the secondary screening bin, and the front end of the fine screen plate is connected to the lower end of the second discharge port.

[0010] The lower surface of the secondary screening bin is set horizontally, the primary screening bin is tilted with the front end lower than the rear end, the two side surfaces of the secondary screening bin are symmetrical about an intermediate reference plane, and the central axis of the primary screening bin is located on the intermediate reference plane.

[0011] The beneficial effects of the present invention are:

[0012] 1. The peppercorns can be screened continuously by using a fine sieve plate and an array of slide bars. There is no need to screen them in groups, which improves the screening efficiency.

[0013] 2. The peppercorn raw materials are turned over by rotating the mounting plate. During the turning process, impurities are effectively separated from the peppercorns, thereby improving the screening effect.

[0014] 3. No vibration will be generated during screening. Screening is only done by flipping and rolling, which avoids the structure of the peppercorns from being destroyed and improves the raw material utilization rate of subsequent peppercorn oil extraction. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the pepper screening device of an embodiment of the present application.

[0016] Figure 2 This is a schematic diagram of the internal structure of the first-level screening bin in the embodiment of the present application. Figure 1 .

[0017] Figure 3 This is a schematic diagram of the internal structure of the first-level screening bin in the embodiment of the present application. Figure 2 .

[0018] Figure 4 It is a schematic diagram of the internal structure of the transition bin and the secondary screening bin of an embodiment of the present application.

[0019] Figure 5 It is a three-dimensional schematic diagram of the pepper screening device of an embodiment of the present application from another perspective.

[0020] Markings in the figure: 1-first-level screening bin, 11-installation port, 12-installation plate, 13-moving port, 14-sliding rod, 15-feeding port, 16-first discharge port, 17-dust suction pipe, 18-connecting rod, 19-fixed plate, 110-bearing seat, 111-rotating motor, 112-rotating rod, 113-arc plate, 114-limiting head, 115-linear cylinder, 116-installation block, 117-connecting frame, 118-first inner arc bar, 119-first outer arc bar, 120-second inner Arc bar, 121-second outer arc bar, 122-first mounting bracket, 123-third inner arc bar, 124-third outer arc bar, 125-second mounting bracket, 126-feeding channel, 127-discharging channel, 2-transition bin, 21-air inlet pipe, 22-discharging rail, 3-secondary screening bin, 31-fine screen plate, 32-second discharge port, 33-conveyor belt, 34-material receiving frame, 35-feeding port, 4-air delivery mechanism, 41-first air pipe, 5-dust suction mechanism, 51-second air pipe. DETAILED DESCRIPTION

[0021] To make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the embodiments described in the present invention are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] like Figure 1 As shown, this embodiment provides a pepper screening device, including a primary screening bin 1, a transition bin 2, a secondary screening bin 3, etc.

[0023] Specifically, such as Figure 2As shown, when screening the peppercorns, it is necessary to first screen out the peppercorn plants from the raw peppercorns, so a first-level screening bin 1 with a cylindrical bin body is provided, and a mounting opening 11 is coaxially passed through the two end faces thereof, and a mounting plate 12 is coaxially rotated in the mounting opening 11. More specifically, the rotational cooperation method can be to provide a convex ring on the edge of the mounting plate 12, and to provide an annular rail on the inner side of the mounting opening 11, so that the convex ring slides and cooperates with the annular rail; the mounting plates 12 are all penetrated by a plurality of movable openings 13, and in this example, each mounting plate 12 is penetrated by sixteen movable openings 13; the movable openings 13 are all arranged around the central axis of the mounting plate 12 The circumferential array is distributed, and the moving openings 13 on the two mounting plates 12 correspond to each other one by one, and each two corresponding moving openings 13 are penetrated with a slide bar 14, and the slide bars 14 are all arranged to move along their own central axis. The rear end of the upward side wall of the first-level screening bin 1 is penetrated with an inlet 15 and the front end of the downward side wall is penetrated with a first discharge port 16; with such a design, when loading, there is no need to stop the machine, and only the slide bar 14 at the top of the current state needs to be moved so that there is a certain distance between the rear end of the slide bar 14 at the top and the mounting plate 12 at the rear end of the first-level screening bin 1, and the pepper raw materials can be continuously fed in. The raw materials of Sichuan peppercorns are put into the feed port 15, and enter the columnar space formed by the array of slide bars 14 through the gap between the rear end of the upper slide bar 14 and the mounting plate 12 at the rear end of the first-stage screening bin 1, so as to screen out fine particles of impurities and Sichuan peppercorns and retain Sichuan peppercorns. When discharging, it is only necessary to move the slide bar 14 which is currently located at the bottom so that there is a certain distance between the front end of the slide bar 14 at the bottom and the mounting plate 12 at the front end of the first-stage screening bin 1, so that the Sichuan peppercorns after screening can fall out from the gap between the front end of the slide bar 14 at the bottom and the mounting plate 12 at the front end of the first-stage screening bin 1, and can be discharged from the feed port 15. The first discharge port 16 falls out of the device, and the feed port 15 and the first discharge port 16 are arranged on the wall of the first-level screening bin 1 to avoid the positions of the feed port 15 and the first discharge port 16 affecting the rotation drive of the mounting plate 12 and causing the driving structure of the device to be too complicated; and by arranging a movable slide rod 14, it can be ensured that the loading position and the unloading position of the device are always fixed during the rotation process; the front end of the upward side wall of the first-level screening bin 1 is connected to a dust suction pipe 17 connected to the first-level screening bin 1, and the dust suction pipe 17 is used to absorb dust in the space inside the first-level screening bin 1.

[0024] Specifically, such as Figure 4As shown, the upper end of the transition bin 2 is connected to the downward side wall of the first-level screening bin 1 and is connected to the first-level screening bin 1. The rear end of the transition bin 2 is connected to an air intake pipe 21. The air intake direction of the air intake pipe 21 is set toward the dust suction pipe 17, and the air intake pipe 21 is used to spray air in the direction of the dust suction pipe 17; with this design, the peppercorns flipped in the first-level screening bin 1 will lift smaller impurity particles and dust into the space inside the bin, and the airflow ejected by the air intake pipe 21 will blow these smaller impurity particles and dust to the dust suction pipe 17 to be sucked away. These smaller impurity particles and dust will only move within the first-level screening bin 1 and the transition bin 2, and will not fly out of the device to affect the production environment.

[0025] Specifically, such as Figure 4 As shown, the upper end of the secondary screening bin 3 is connected to the upper end of the transition bin 2 and connected to the transition bin 2, and a fine screen plate 31 is provided in the secondary screening bin 3. The plate surface of the fine screen plate 31 is in the shape of a screen mesh, which is used to screen out impurities smaller than the size of peppercorns; the fine screen plate 31 is arranged directly below the connection point between the secondary screening bin 3 and the transition bin 2, and the fine screen plate 31 is tilted with the front end lower than the rear end. The front end surface of the secondary screening bin 3 is passed through by a second discharge port 32, and the front end of the fine screen plate 31 is connected to the lower end of the second discharge port 32; with such a design, the peppercorns and impurities falling from the primary screening bin 1 will fall on the fine screen plate 31 and roll on the fine screen plate 31, among which impurities smaller than the peppercorns will pass through the screen of the fine screen plate 31, and the peppercorns will roll on the fine screen plate 31 to the second discharge port 32 and fall out.

[0026] More specifically, Figure 2 and Figure 4 As shown, the lower surface of the secondary screening bin 3 is set horizontally, the primary screening bin 1 is tilted with the front end lower than the rear end, the two side surfaces of the secondary screening bin 3 are symmetrical about an intermediate reference plane, and the central axis of the primary screening bin 1 is located on the intermediate reference plane; with such a design, the Sichuan pepper raw material moves toward the first discharge port 16 while flipping in the primary screening bin 1.

[0027] During operation, the peppercorn raw materials are continuously put into the feed port 15, and the peppercorn raw materials enter the cylindrical space formed by the slide bar 14 array through the gap between the rear end of the slide bar 14 located above and the mounting plate 12 located at the rear end of the first-level screening bin 1, and are flipped in the cylindrical space. The smaller impurity particles and dust raised by the flipping are blown to the dust suction pipe 17 by the air flow ejected from the air inlet pipe 21 and sucked out by the dust suction pipe 17. The peppercorn grains and impurities that cannot be blown up will pass through the gap of the slide bar 14 and fall onto the fine screen plate 31 for secondary screening. Finally, the peppercorn plants fall out of the first discharge port 16, and the peppercorn grains fall out of the second discharge port 32. More specifically, impurities larger than the peppercorn grains have been screened out when the peppercorns are picked. This device screens out impurities smaller than the peppercorn grains and attached to the peppercorn grains and peppercorn plants.

[0028] Preferably, Figure 2As shown, two connecting rods 18 are connected to both ends of the first-level screening bin 1, and the two connecting rods 18 located at the same end of the first-level screening bin 1 are connected to the same fixed plate 19. Bearing seats 110 are provided on the two fixed plates 19, and one of the fixed plates 19 is provided with a rotating motor 111. A rotating rod 112 is coaxially passed through the two mounting plates 12, and both ends of the rotating rod 112 are respectively installed on the two bearing seats 110. One end of the rotating rod 112 is coaxially connected to the driving end of the rotating motor 111. The rotating motor 111 is used to drive the rotating rod 112 to rotate, thereby driving the two mounting plates 12 to rotate synchronously.

[0029] Preferably, Figure 3 As shown, both ends of the slide bar 14 are integrally formed with a section of arc-shaped plate 113 coaxial with the first-level screening bin 1, and the ends of the arc-shaped plate 113 are integrally formed with a limit head 114 whose size matches the slide bar 14 and is coaxial with the slide bar 14. The fixed plate 19 is provided with two linear cylinders 115 whose driving direction is parallel to the central axis of the first-level screening bin 1, and the driving ends of the linear cylinders 115 are both arranged toward the mounting plate 12 and are connected to a mounting block 116. The mounting block 116 is connected to two connecting frames 117. The two connecting frames 117 connected to the same mounting block 116 are respectively connected to the first inner The radius of the arc strip 118 and the first outer arc strip 119, the first inner arc strip 118 is smaller than the radius of the first outer arc strip 119, the distance between the first inner arc strip 118 and the first outer arc strip 119 is smaller than the diameter of the slide bar 14 and greater than the thickness of the arc plate 113, the two groups of first inner arc strips 118 and the first outer arc strip 119 located outside the rear end of the first-level screening bin 1 are both located below the rotating rod 112 and are symmetrically arranged about the middle reference plane, the two groups of first inner arc strips 118 and the first outer arc strip 119 located outside the front end of the first-level screening bin 1 are both located above the rotating rod 112 and are symmetrically arranged about the middle reference plane.

[0030] This design allows the mounting plate 12 to drive the slide rod 14 to rotate, and the arc plate 113 can enter between the first inner arc strip 118 and the first outer arc strip 119, and then drive the corresponding slide rod 14 to move through the linear cylinder 115, thereby driving the movement of the slide rod 14.

[0031] Preferably, Figure 3As shown, a second inner arc strip 120 and a second outer arc strip 121 corresponding thereto are coaxially provided on both ends of the first screening bin 1, the cross-sectional dimensions of the second inner arc strip 120 are matched with the first inner arc strip 118, the cross-sectional dimensions of the second outer arc strip 121 are matched with the first outer arc strip 119, and the end of the fixing plate 19 facing the mounting plate 12 is connected to the first mounting bracket 122, and the second inner arc strip 120 and the second outer arc strip 121 corresponding thereto are respectively mounted on the first mounting bracket 122. When the linear cylinder 115 is in a retracted state, the two ends of the second inner arc strip 120 are respectively connected to the two first inner arc strips 118, and the second outer arc strip 121 is respectively connected to the first mounting bracket 122. The two ends of the strip 121 are respectively connected to the two first outer arc strips 119; further preferably, the first mounting frame 122 includes a mounting seat, two first L-shaped rods, and two first mounting heads. The end of the fixing plate 19 facing the mounting plate 12 is connected to the mounting seat, and the upper and lower surfaces of the mounting seat are connected to the first L-shaped rods. The vertical sections of the first L-shaped rods are perpendicular to the central axis of the first screening bin 1 and connected to the mounting seat. The horizontal sections of the first L-shaped rods are arranged toward the mounting plate 12 and parallel to the first screening bin 1. The inner arc surface of the second inner arc strip 120 and the outer arc surface of the second outer arc strip 121 are connected to the first mounting head, and the horizontal sections of the first L-shaped rods are respectively connected to the first mounting heads.

[0032] Two third inner arc strips 123 and corresponding third outer arc strips 124 are coaxially provided on both ends of the first-stage screening bin 1. The cross-sectional dimensions of the third inner arc strips 123 match the first inner arc strips 118, and the cross-sectional dimensions of the third outer arc strips 124 match the first outer arc strips 119. Two second mounting brackets 125 are connected to both ends of the first-stage screening bin 1. The third inner arc strips 123 and their corresponding third outer arc strips 124 are respectively mounted on the second mounting brackets 125. When the linear cylinder 115 is in the extended state, one end of the third inner arc strip 123 is respectively connected to the first inner arc strip 118, and one end of the third outer arc strip 124 is respectively connected to the first outer arc strip 119, and the other end of the third inner arc strip 123 is connected to the first inner arc strip 118. 1 is connected to the projection of the first inner arc strip 118 at the other end of the first screening bin 1 in the axial direction of the first screening bin 1, and the other end of the third outer arc strip 124 is connected to the projection of the first outer arc strip 119 located at the other end of the first screening bin 1 in the axial direction of the first screening bin 1; further preferably, the third mounting frame includes a bracket, two second L-shaped rods, and two second mounting seats, the brackets are all provided on the end surface of the first screening bin 1, the two second L-shaped rods are both connected to the brackets, the radial sections of the second L-shaped rods are both perpendicular to the radial arrangement of the first screening bin 1, the axial sections of the two L-shaped rods are both arranged along the axial direction of the first screening bin 1, the inner arc surface of the third inner arc strip 123 and the outer arc surface of the third outer arc strip 124 are both installed with second mounting heads, and the axial sections of the second L-shaped rods are respectively connected to the second mounting heads.

[0033] Since the first-level screening bin 1 is tilted and the slide bar 14 can slide in the moving opening 13, if the slide bar 14 is not restricted, the slide bar 14 may rotate around its own central axis and slide along its own axial direction during the rotation of the mounting plate 12. The second inner arc bar 120, the second outer arc bar 121, the third inner arc bar 123, and the third outer arc bar 124 restrict the sliding and rotation of the slide bar 14, so that during the rotation of the mounting plate 12, the arc plate 113 at one or both ends of the slide bar 14 always moves between the first inner arc bar 118 and the first outer arc bar 119, between the second inner arc bar 120 and the second outer arc bar 121, and between the third inner arc bar 123 and the third outer arc bar 124, thereby restricting the sliding and rotation of the slide bar 14 itself.

[0034] Preferably, Figure 2 As shown, a feed channel 126 is extended from the inner side of the feed port 15 to the interior of the first-stage screening bin 1, and the lower part of the feed channel 126 is in the shape of an arc coaxial with the first-stage screening bin 1, and the radius of the lower part of the feed channel 126 matches the array radius of the moving port 13, and a discharge channel 127 is extended from the inner side of the second discharge port 32 to the interior of the first-stage screening bin 1, and the lower part of the discharge channel 127 is in the shape of an arc coaxial with the first-stage screening bin 1, and the radius of the lower part of the discharge channel 127 matches the array radius of the moving port 13.

[0035] With such a design, after the peppercorn raw materials pass through the gap between the rear end of the upper slide bar 14 and the mounting plate 12 at the rear end of the first-stage screening bin 1, they will fall into the cylindrical space formed by the slide bar array 14 under the restriction of the feed channel 126, and will not be scattered to the rest of the first-stage screening bin 1; after the peppercorns pass through the gap between the front end of the lower slide bar 14 and the mounting plate 12 at the front end of the first-stage screening bin 1, they will fall directly out from the first discharge port 16 under the restriction of the discharge channel 127, and will not be scattered to the rest of the first-stage screening bin 1.

[0036] Preferably, Figure 5 As shown, the device also includes an air supply mechanism 4 and a dust collection mechanism 5 arranged on one side of the secondary screening bin 3. The air inlet pipe 21 is connected to the first air supply pipe 41, and the first air supply pipe 41 is connected to the air supply mechanism 4. The air supply mechanism 4 is used to supply air into the first air supply pipe 41. The dust collection pipe 17 is connected to the second air supply pipe 51, and the second air supply pipe 51 is connected to the dust collection mechanism 5. The dust collection mechanism 5 is used to absorb air from the second air supply pipe 51. In this example, the dust collection mechanism 5 can adopt a conventional pump-type vacuum cleaner, and the air supply mechanism 4 can adopt a conventional pump-type jet. The pump-type dust collection mechanism and the pump-type jet mechanism are both existing technologies in this field, so they will not be described in detail here.

[0037] Preferably, Figure 4As shown, a discharge rail 22 is provided below the first discharge port 16. The discharge rail 22 is tilted so that the front end is lower than the rear end. The rear end of the discharge rail 22 is connected to the outer wall of the transition bin 2. A conveyor belt 33 is provided at the front end of the secondary screening bin 3. The conveying direction of the conveyor belt 33 is parallel to the length direction of the secondary screening bin 3. The rear end of the conveyor belt 33 is provided below the second discharge port 32, and the front end of the discharge rail 22 is located directly above the conveyor belt 33.

[0038] With such a design, the pepper plants falling out of the first discharge port 16 and the pepper grains falling out of the second discharge port 32 can be integrated onto the conveyor belt 33 so as to enter the extraction process together later.

[0039] Preferably, Figure 4 As shown, a material receiving frame 34 is slidingly provided on the inner bottom surface of the secondary screening bin 3 , and the material receiving frame 34 is arranged below the fine screen plate 31 . A material taking port 35 is opened on the rear end surface of the secondary screening bin 3 , and the size of the material taking port 35 matches the material receiving frame 34 .

[0040] With such a design, impurities passing through the fine sieve plate 31 will fall into the receiving frame 34 . When there are many impurities in the receiving frame 34 , the receiving frame 34 can be drawn out from the material taking port 35 for cleaning.

[0041] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application.

Claims

1. A pepper screening device, characterized in that: include: The first-stage screening bin (1) has mounting openings (11) coaxially passed through its two end faces, a mounting plate (12) is coaxially rotated in the mounting opening (11), a plurality of movable openings (13) are passed through the mounting plates (12), the movable openings (13) are arranged in a circular array around the central axis of the mounting plate (12), the movable openings (13) on the two mounting plates (12) correspond to each other one by one, and a sliding rod (14) is movably passed through each two movable openings (13) corresponding to each other, the rear end of the upward side wall of the first-stage screening bin (1) is passed through with a material inlet (15) and the front end of the downward side wall is passed through with a first material outlet (16), and the front end of the upward side wall of the first-stage screening bin (1) is connected to a dust collection pipe (17) connected to the first-stage screening bin (1); The transition bin (2) has an upper end connected to the downward side wall of the first-stage screening bin (1) and communicated with the first-stage screening bin (1). The rear end of the transition bin (2) is connected to an air intake pipe (21), and the air intake direction of the air intake pipe (21) is set toward the dust collection pipe (17); The secondary screening bin (3) has an upper end connected to the upper end of the transition bin (2) and communicated with the transition bin (2). A fine screen plate (31) for screening out impurities smaller than the size of peppercorns is provided in the secondary screening bin (3). The fine screen plate (31) is provided directly below the connection point between the secondary screening bin (3) and the transition bin (2). The fine screen plate (31) is tilted so that the front end is lower than the rear end. A second discharge port (32) is passed through the front end surface of the secondary screening bin (3). The front end of the fine screen plate (31) is connected to the lower end of the second discharge port (32). The lower surface of the secondary screening bin (3) is arranged horizontally, the primary screening bin (1) is arranged tilted with the front end lower than the rear end, the two side surfaces of the secondary screening bin (3) are symmetrical about an intermediate reference plane, and the central axis of the primary screening bin (1) is located on the intermediate reference plane; Both ends of the first-stage screening bin (1) are connected to connecting rods (18), and the connecting rods (18) are connected to fixed plates (19). Bearing seats (110) are provided on the two fixed plates (19), and a rotating motor (111) is provided on one of the fixed plates (19). A rotating rod (112) is coaxially passed through the two mounting plates (12), and both ends of the rotating rod (112) are respectively installed on the two bearing seats (110), and one end of the rotating rod (112) is coaxially connected to the driving end of the rotating motor (111); Both ends of the slide bar (14) are integrally formed with an arc plate (113) coaxial with the first-stage screening bin (1), and the ends of the arc plate (113) are integrally formed with a limit head (114) whose size matches the slide bar (14) and is coaxial with the slide bar (14). The fixed plate (19) is provided with two linear cylinders (115) whose driving direction is parallel to the central axis of the first-stage screening bin (1), and the driving ends of the linear cylinders (115) are both arranged toward the mounting plate (12) and are connected to mounting blocks (116). The mounting blocks (116) are connected to two connecting frames (117), and the two connecting frames (117) connected to the same mounting block (116) are respectively connected to the first inner The arc strip (118) and the first outer arc strip (119), the radius of the first inner arc strip (118) is smaller than that of the first outer arc strip (119), the spacing between the first inner arc strip (118) and the first outer arc strip (119) is smaller than the diameter of the slide bar (14) and larger than the thickness of the arc plate (113), the two groups of first inner arc strips (118) and first outer arc strips (119) located outside the rear end of the first-stage screening bin (1) are both located below the rotating rod (112) and are symmetrically arranged with respect to the middle reference plane, and the two groups of first inner arc strips (118) and first outer arc strips (119) located outside the front end of the first-stage screening bin (1) are both located above the rotating rod (112) and are symmetrically arranged with respect to the middle reference plane.

2. The pepper screening device according to claim 1, characterized in that A second inner arc strip (120) and a second outer arc strip (121) corresponding thereto are coaxially provided on both ends of the first screening bin (1), the cross-sectional dimensions of the second inner arc strip (120) are matched with the first inner arc strip (118), and the cross-sectional dimensions of the second outer arc strip (121) are matched with the first outer arc strip (119), and one end of the fixing plate (19) facing the mounting plate (12) is connected to the first mounting frame (122), and the second inner arc strip (120) and the second outer arc strip (121) corresponding thereto are respectively mounted on the first mounting frame (122), and when the linear cylinder (115) is in a retracted state, the two ends of the second inner arc strip (120) are respectively connected to the two first inner arc strips (118), and the two ends of the second outer arc strip (121) are respectively connected to the two first outer arc strips (119); Two third inner arc strips (123) and corresponding third outer arc strips (124) are coaxially provided on both ends of the first screening bin (1). The cross-sectional dimensions of the third inner arc strips (123) are matched with the first inner arc strips (118). The cross-sectional dimensions of the third outer arc strips (124) are matched with the first outer arc strips (119). Two second mounting brackets (125) are connected to both ends of the first screening bin (1). The third inner arc strips (123) and the corresponding third outer arc strips (124) are respectively mounted on the second mounting brackets (125). The linear cylinder (115) ) is in the extended state, one end of the third inner arc strip (123) is connected to the first inner arc strip (118), one end of the third outer arc strip (124) is connected to the first outer arc strip (119), and the other end of the third inner arc strip (123) is connected to the projection of the first inner arc strip (118) located at the other end of the first screening bin (1) in the axial direction of the first screening bin (1), and the other end of the third outer arc strip (124) is connected to the projection of the first outer arc strip (119) located at the other end of the first screening bin (1) in the axial direction of the first screening bin (1).

3. The pepper screening device according to claim 1, characterized in that A feed channel (126) is extended from the inner side of the feed port (15) toward the interior of the first screening bin (1), the lower portion of the feed channel (126) is in the shape of an arc coaxial with the first screening bin (1), and the radius of the lower portion of the feed channel (126) matches the array radius of the moving port (13), and a discharge channel (127) is extended from the inner side of the second discharge port (32) toward the interior of the first screening bin (1), the lower portion of the discharge channel (127) is in the shape of an arc coaxial with the first screening bin (1), and the radius of the lower portion of the discharge channel (127) matches the array radius of the moving port (13).

4. The pepper screening device according to claim 1, characterized in that The apparatus further comprises an air supply mechanism (4) and a dust collection mechanism (5) provided on one side of the secondary screening bin (3); the air inlet pipe (21) is connected to a first air supply pipe (41); the first air supply pipe (41) is connected to the air supply mechanism (4); the air supply mechanism (4) is used to supply air into the first air supply pipe (41); the dust collection pipe (17) is connected to a second air supply pipe (51); the second air supply pipe (51) is connected to the dust collection mechanism (5); and the dust collection mechanism (5) is used to absorb air from the second air supply pipe (51).

5. The pepper screening device according to claim 1, characterized in that: A discharge rail (22) is provided below the first discharge port (16), and the discharge rail (22) is tilted so that the front end is lower than the rear end. The rear end of the discharge rail (22) is connected to the outer wall of the transition bin (2), and the front end of the discharge rail (22) is provided lower than the rear end. A conveyor belt (33) is provided at the front end of the secondary screening bin (3), and the conveying direction of the conveyor belt (33) is parallel to the length direction of the secondary screening bin (3). The rear end of the conveyor belt (33) is provided below the second discharge port (32), and the front end of the discharge rail (22) is located directly above the conveyor belt (33).

6. The pepper screening device according to claim 1, characterized in that: A material receiving frame (34) is slidably provided on the inner bottom surface of the secondary screening bin (3), and the material receiving frame (34) is provided below the fine screen plate (31). A material taking opening (35) is provided on the rear end surface of the secondary screening bin (3), and the size of the material taking opening (35) matches the material receiving frame (34).

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