Rape seed winnowing equipment

Abstract

The invention relates to the technical field of agricultural sorting equipment, in particular to rape seed winnowing equipment which comprises a screening box, a cloth screening device, a winnowing device and a waste collecting device, the cloth screening device comprises a centrifugal screening assembly, and the centrifugal screening assembly comprises a centrifugal screening plate and a driving part; the centrifugal screen plate comprises a material bearing part and a screening part, and a plurality of screen holes are formed in the screening part; the winnowing device comprises a fan, an air deflector and a plurality of connecting rods; a through-flow ring groove is formed between the air guide plate and the inner side wall of the screening box, a main ventilation channel and a plurality of branch ventilation channels are formed in the air guide plate, one end of each branch ventilation channel communicates with the main ventilation channel, and the other end of each branch ventilation channel communicates with the through-flow ring groove. The fan is mounted on the air deflector, and an air outlet of the fan is communicated with the main ventilating duct; centrifugal force is conveniently applied to the to-be-screened rape seeds through the centrifugal screening assembly, so that the rape seeds are uniformly distributed on the screening part, meanwhile, the to-be-screened rape seeds are conveniently winnowed along the air guide plate, and the screening quality of the rape seeds is improved.

Description

Technical Field

[0001] The present application relates to the technical field of agricultural sorting equipment, and in particular to a rapeseed seed wind sorting equipment. Background Art

[0002] In order to remove impurities in rapeseed and improve its quality for subsequent processing and storage, rapeseed needs to be sorted. Currently, rapeseed sorting includes color sorting, wind sorting, water sorting, gravity sorting and vibration sorting. Wind sorting is a method of removing impurities by using the wind power of wind sorting equipment and the difference in suspension speed between materials and impurities.

[0003] A wind selection device for rapeseed seeds in the prior art comprises a screening box, a guide plate, a connecting frame, a cleaning device, a blower, a vibration motor and a discharge pipe, wherein a feed port is provided on the upper end surface of the screening box, a guide plate is installed at the top end of the feed port, a middle part of the lower end surface of the guide plate is rotatably connected to one end of the feed port, a first hydraulic column is installed at one end of the guide plate, a bottom end of the first hydraulic column is fixedly connected to the upper end surface of the screening box, a connecting ear is constructed at the top end of the first hydraulic column, and a connecting pin adapted to the connecting ear is constructed at the lower end surface of the guide plate; a connecting frame is installed inside the screening box, the connecting frame is a rectangular frame structure, a screening net is installed at the bottom end of the connecting frame, a cleaning device is installed below the screening net, the cleaning device comprises two connecting columns, a plurality of cross columns are equidistantly constructed at opposite sides of the two connecting columns, a material passage trough is formed between the plurality of cross columns, and needle columns adapted to the number of screening meshes are constructed on the upper end surfaces of the plurality of cross columns.

[0004] In the process of sorting rapeseed seeds in the above-mentioned related rapeseed seed air sorting equipment, the rapeseed seeds fall into the inner cavity of the screening box along the feed port under the action of their own gravity, and the rapeseed seeds are fed unevenly, resulting in uneven distribution of rapeseed seeds during air sorting, affecting the screening quality of rapeseed seeds. Summary of the invention

[0005] In order to improve the screening quality of rapeseed seeds, the present application provides a rapeseed seed air sorting device.

[0006] The present application provides a rapeseed seed wind selection device, which adopts the following technical solution: A rapeseed wind selection device comprises a screening box, a cloth screen device, a wind selection device and a waste collection device, wherein the cloth screen device, the wind selection device and the waste collection device are all installed on the screening box; The cloth screen device comprises a centrifugal screening assembly for rapeseed cloth screen, and the centrifugal screening assembly comprises a centrifugal screen plate and a driving member for driving the centrifugal screen plate to rotate; The centrifugal sieve plate rotates coaxially with the screening box, and the centrifugal sieve plate includes a material receiving portion and a screening portion which are integrally arranged, the screening portion is arranged in an annular shape, and a plurality of sieve holes are opened on the screening portion, and the screening portion is arranged close to the side wall of the screening box; The wind selection device includes a fan, a wind guide plate and a plurality of connecting rods; The air guide plate is arranged concentrically with the screening box, and a flow ring groove is arranged between the air guide plate and the inner side wall of the screening box, and the flow ring groove is located directly below the screening part; A plurality of the connecting rods are evenly distributed along the circumferential direction of the air guide plate, and the air guide plate and the screening box are fixedly connected through the connecting rods; The air guide plate is provided with a main air duct and a plurality of branch air ducts, the main air duct is coaxially arranged with the air guide plate, and the main air duct is arranged along the axial direction of the air guide plate; the plurality of branch air ducts are evenly distributed along the circumferential direction of the air guide plate, and each of the branch air ducts is arranged along the radial direction of the air guide plate, one end of the branch air duct is connected with the main air duct, and the other end is connected with the through-flow annular groove, and the branch air duct is arranged toward the through-flow annular groove; The fan is installed on the air guide plate, and the air outlet of the fan is connected to the main ventilation duct; The waste collection device is used for collecting light debris in rapeseed seeds.

[0007] By adopting the above technical scheme, during the air selection process of the rapeseed seeds to be screened, first, the driving member is adjusted, and the driving member drives the centrifugal screen plate to rotate. Then, the fan is adjusted, and the airflow generated by the fan enters the main ventilation duct along the air outlet of the fan. The airflow then moves along the main ventilation duct to the branch ventilation duct and enters the flow ring groove along the branch ventilation duct. Then, the rapeseed seeds to be screened are injected into the inner cavity of the screening box through the feed inlet of the screening box. The rapeseed seeds to be screened fall on the material receiving part. The centrifugal screen plate drives the rapeseed seeds to be screened to move. The rapeseed seeds to be screened move to one side of the screening part under the action of centrifugal force, so that the rapeseed seeds to be screened The rapeseed seeds tend to be evenly distributed on the screening part and fall into the flow ring groove along the screen holes of the screening part. The airflow blown out from the branch air duct acts on the rapeseed to be screened, and the light debris of the rapeseed to be screened is separated. Then, the light debris in the rapeseed is collected by the waste collecting device. The designed rapeseed seed air separation equipment is convenient for applying centrifugal force to the rapeseed to be screened through the centrifugal screening component, so that the rapeseed to be screened is evenly distributed on the screening part. At the same time, the air separation device is convenient for air separation of the rapeseed to be screened along the circumferential direction of the air guide plate, thereby improving the screening quality of the rapeseed.

[0008] Optionally, the driving member includes a driving gear ring, a driving gear and a rotating motor; The active gear ring is coaxially fixed to the centrifugal screen plate, and a clearance groove for accommodating the active gear ring is provided on the screening box; The rotating motor is installed on the screening box, the output shaft of the rotating motor is coaxially connected with the driving gear, and the teeth of the driving gear extend into the clearance groove, and the driving gear is meshed with the driving gear ring.

[0009] By adopting the above technical solution, the rotating motor is adjusted, and the output shaft of the rotating motor drives the active gear to rotate. Since the active gear is engaged with the active gear ring, the active gear drives the active gear ring to rotate, and the active gear ring drives the centrifugal screen plate to move synchronously; the designed driving member is convenient for applying force to the centrifugal screen plate to realize the rotation of the centrifugal screen plate, so that the rapeseed seeds to be screened are distributed under the action of centrifugal force, thereby realizing the screening of the rapeseed seeds.

[0010] Optionally, the cloth screen device further comprises a vibrating screen assembly for vibrating and screening rapeseed seeds, wherein the vibrating screen assembly comprises a vibrating screen plate, a supporting retaining ring, a lifting member and a plurality of telescopic rods; The support retaining ring is located in the inner cavity of the screening box, and the support retaining ring is coaxially fixed with the inner side wall of the screening box, and the support retaining ring is located above the centrifugal screen plate; The vibrating screen plate is located directly above the supporting retaining ring, and the vibrating screen plate is slidably connected to the screening box; The plurality of telescopic rods are evenly distributed along the circumferential direction of the support retaining ring, and one end of the telescopic rod is fixedly connected to the support retaining ring, and the other end is fixedly connected to the vibrating screen plate; The lifting member is installed on the screening box and is used to drive the vibrating screen plate to move upward.

[0011] By adopting the above technical solution, the lifting member is adjusted, and the lifting member applies force to the vibrating screen plate to make the vibrating screen plate move upward. At the same time, the vibrating screen plate applies force to the telescopic rod to make the telescopic rod in a stretched state. When the lifting member stops acting on the vibrating screen plate, the telescopic rod drives the vibrating screen plate to reset, thereby realizing the up and down vibration of the vibrating screen plate, thereby realizing the preliminary screening of the rapeseed seeds to be screened; the designed vibrating screen assembly cooperates with the telescopic rod to realize the up and down vibration of the vibrating screen plate, thereby realizing the preliminary screening of the rapeseed seeds to be screened.

[0012] Optionally, the lifting member includes a driving motor and a cam; The driving motor is mounted on the screening box; The output shaft of the driving motor extends into the extension section of the screening box and is fixedly connected to the cam, and the cam is located in the inner cavity of the screening box, the cam is located between the vibrating screen plate and the supporting retaining ring, and the side wall of the cam abuts against the bottom wall of the vibrating screen plate.

[0013] By adopting the above technical solution, the driving motor is adjusted, and the output shaft of the driving motor drives the cam to rotate. The cam applies force to the vibrating screen plate, so that the vibrating screen plate moves upward. At the same time, the vibrating screen plate applies force to the telescopic rod, so that the telescopic rod is in a stretched state. When the flange part of the cam is separated from the vibrating screen plate, the telescopic rod drives the vibrating screen plate to reset, thereby realizing the up and down vibration of the vibrating screen plate, and then realizing the preliminary screening of the rapeseed seeds to be screened; the designed lifting member is convenient for applying force to the vibrating screen plate, so that the vibrating screen plate moves upward, and cooperates with the telescopic rod to realize the up and down vibration of the vibrating screen plate.

[0014] Optionally, the telescopic rod includes a fixed section, a sliding section and a compression spring; The fixed section is coaxially arranged with the sliding section, and the fixed section is fixedly connected to the supporting retaining ring, and one end of the sliding section away from the fixed section is fixedly connected to the vibrating screen plate; The compression spring is installed in the inner cavity of the fixed section, and one end of the compression spring is connected to the fixed section, and the other end is connected to the sliding section.

[0015] By adopting the above technical solution, the designed telescopic rod is convenient for applying a downward force to the vibrating screen plate, and at the same time, realizes elastic support of the vibrating screen plate.

[0016] Optionally, the waste collection device includes a feed ring, a collection ring, a plurality of guide pipes, and a negative pressure pump installed on each of the guide pipes; The feed ring is coaxially fixed on the screening box, and the side of the feed ring close to the screening box is connected to the inner cavity of the screening box; The collecting ring is sleeved on the screening box, and the collecting ring is located directly below the feeding ring, and the collecting ring is fixedly connected to the screening box; The plurality of guide pipes are evenly distributed along the circumferential direction of the screening box, one end of the guide pipe is connected to the feed ring, and the other end is connected to the collection ring, and the inner cavities of the feed ring, the guide pipe and the collection ring are in communication.

[0017] By adopting the above technical solution and adjusting the negative pressure pump, the light debris in the rapeseed seeds during the air selection process enters the feed ring along the inner cavity of the screening box, then enters the guide pipe along the feed ring, and enters the collecting pipe along the guide pipe, thereby realizing the centralized collection of the light debris in the rapeseed seeds to be screened; the designed waste collection device facilitates the application of force to the inner cavity of the feed ring through the negative pressure pump, thereby realizing the centralized collection of the light debris in the rapeseed seeds to be screened.

[0018] Optionally, the axis of the aggregate ring is arranged to intersect with the axis of the screening box, and a discharge port is opened at a lower end of the aggregate ring, and a cloth bag for blocking the discharge port is installed on the aggregate ring.

[0019] By adopting the above technical solution, the designed discharge port is convenient for concentrated discharge of light debris in the collecting ring, and the exhaust of the vacuum pump is achieved through the cooperation of the bag and the discharge port.

[0020] Optionally, the centrifugal screening assembly further includes a rotating ring, a scraper and a transmission member; The rotating ring is coaxially arranged with the screening box, and the rotating ring is rotatably connected with the screening box; The scraper is rotatably connected to the rotating ring, and the scraper is provided with bristles that fit the inner wall of the screening box on one side close to the inner wall of the screening box; The transmission member is used for the synchronous rotation of the rotating ring and the centrifugal screen plate.

[0021] By adopting the above technical scheme, the rotating motor is adjusted, and the output shaft of the rotating motor drives the active gear to rotate. Since the active gear is meshed with the active gear ring, the active gear drives the active gear ring to rotate, and the active gear ring drives the centrifugal screen plate to move synchronously. At the same time, the output shaft of the rotating motor drives the transmission member to move, and the transmission member drives the rotating ring to rotate synchronously, and the rotating ring drives the scraper to rotate, and the scraper drives the bristles to clean the inner wall of the screening box; the designed rotating ring, scraper and transmission member are convenient for cleaning the inner wall of the screening box, ensuring the cleanliness of the inside of the screening box and improving the screening quality of rapeseed seeds.

[0022] Optionally, the transmission member includes a transmission rod, a transmission gear and a transmission gear ring; The transmission rod is coaxially arranged with the output shaft of the rotating motor; The transmission rod is coaxially fixed with the transmission gear, and the transmission gear is located at an end of the transmission rod away from the rotating motor; The transmission gear ring is sleeved on the outer circumference of the rotating ring, and the transmission gear ring is fixedly connected to the rotating ring, and the transmission gear ring is meshed with the transmission gear.

[0023] By adopting the above technical scheme, the rotating motor is adjusted, and the output shaft of the rotating motor drives the active gear to rotate. Since the active gear is meshed with the active gear ring, the active gear drives the active gear ring to rotate, and the active gear ring drives the centrifugal screen plate to move synchronously. At the same time, the output shaft of the rotating motor drives the transmission rod to rotate synchronously, and the transmission rod drives the transmission gear to rotate. Since the transmission gear is meshed with the transmission gear ring, the transmission gear ring drives the rotating ring to rotate synchronously, and the rotating ring drives the scraper to rotate, and the scraper drives the bristles to clean the inner wall of the screening box. The designed transmission member facilitates the synchronous rotation of the rotating ring and the vibrating screen plate, thereby driving the scraper to rotate, thereby cleaning the inner wall of the screening box and improving the screening quality of rapeseed seeds.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. The designed rapeseed seed air selection equipment realizes the up and down vibration of the vibrating screen plate through the screen device and the telescopic rod, thereby realizing the preliminary screening of the rapeseed seeds to be screened; and it is convenient to apply centrifugal force to the rapeseed seeds to be screened, so that the rapeseed seeds to be screened are evenly distributed in the screening part, and then the rapeseed seeds are screened for the second time through the screening part; at the same time, the wind selection device facilitates the wind selection of the rapeseed seeds to be screened along the circumferential direction of the air guide plate, realizing the re-screening of the rapeseed seeds to be screened, and improving the screening quality of the rapeseed seeds; 2. The designed rapeseed seed air sorting equipment is convenient for applying centrifugal force to the rapeseed to be screened through the centrifugal screening component, so that the rapeseed to be screened is evenly distributed in the screening part, and then the rapeseed is screened by the screening part. At the same time, it is convenient to clean the inner wall of the screening box, ensure the cleanliness of the inside of the screening box, and improve the screening quality of the rapeseed. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of the rapeseed seed air selection device of Example 1 of the present application; Figure 2 is a cross-sectional view of a rapeseed seed air selection device according to Example 1 of the present application; Figure 3 yes Figure 2 A magnified schematic diagram of part A; Figure 4 yes Figure 2 An enlarged schematic diagram of part B.

[0026] Description of reference numerals: 1. screening box; 2. cloth screen device; 21. vibrating screen assembly; 211. vibrating screen plate; 212. lifting member; 2121. driving motor; 2122. cam; 213. telescopic rod; 2131. fixed section; 2132. compression spring; 2133. sliding section; 214. supporting retaining ring; 22. centrifugal screening assembly; 221. centrifugal screen plate; 2211. material receiving part; 2212. screening part; 2213. sieve hole; 222. driving member; 2221. rotating motor; 2222. driving gear Wheel; 2223, give way groove; 2224, active gear ring; 223, transmission member; 2231, transmission rod; 2232, transmission gear; 2233, transmission gear ring; 224, rotating ring; 225, scraper; 226, bristles; 3, flow ring groove; 4, waste collection device; 41, feed ring; 42, guide pipe; 43, negative pressure pump; 44, collection ring; 45, discharge port; 46, cloth bag; 5, air selection device; 51, fan; 52, air guide plate; 53, main ventilation duct; 54, branch ventilation duct; 55, connecting rod. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-4 This application is described in further detail.

[0028] The embodiment of the present application discloses a rapeseed seed air selection device.

[0029] Reference Figure 1 and Figure 2 , a rape seed wind selection device, comprising a screening box 1, a cloth screen device 2, a wind selection device 5 and a waste collection device 4, the cloth screen device 2, the wind selection device 5 and the waste collection device 4 are all installed on the screening box 1; the cloth screen device 2 comprises a vibration screening component 21 for vibrating screening of rape seeds and a centrifugal screening component 22 for cloth screening of rape seeds, the wind selection device 5 is used for wind screening of rape seeds, and the waste collection device 4 is used for collecting light debris in rape seeds; during the screening process of the rape seeds to be screened, the rape seeds to be screened are vibrated and screened under the action of the vibration screening component 21 to achieve preliminary screening of the rape seeds to be screened; then, the rape seeds after the preliminary screening are screened by the centrifugal screening component 22 to achieve secondary screening of the rape seeds after the preliminary screening; then, the rape seeds after the secondary cloth screening are air-selected by the wind selection device 5, and the light debris in the rape seeds after the air selection is collected by the waste collection device 4, and the rape seeds after the air selection fall into the bottom of the screening box 1.

[0030] Reference Figure 2 and Figure 3The vibrating screen assembly 21 is arranged near the feed inlet of the screening box 1, and the vibrating screen assembly 21 is located directly below the feed inlet of the screening box 1; the vibrating screen assembly 21 includes a vibrating screen plate 211, a supporting retaining ring 214, a lifting member 212 and a plurality of telescopic rods 213, the supporting retaining ring 214 is located in the inner cavity of the screening box 1, and the supporting retaining ring 214 is coaxially fixed to the inner side wall of the screening box 1. In this embodiment, the supporting retaining ring 214 is arranged in an annular shape, and because the supporting retaining ring 214 is arranged horizontally, in order to prevent the rapeseed seeds that are initially screened from being retained in the supporting retaining ring 2 14 surface, a plurality of through holes are opened on the support retaining ring 214 to reduce the number of rapeseed seeds that are initially screened and are retained in the support retaining ring 214, which is not shown in the figure; the vibrating screen plate 211 is located directly above the support retaining ring 214, and the vibrating screen plate 211 is slidably connected to the screening box 1, and the plane where the vibrating screen plate 211 is located is arranged parallel to the plane where the support retaining ring 214 is located; a plurality of telescopic rods 213 are evenly distributed along the circumferential direction of the support retaining ring 214, and one end of the telescopic rod 213 is fixedly connected to the support retaining ring 214, and the other end is fixedly connected to the vibrating screen plate 211 The telescopic rods 213 in the present application can be three, four or five, as long as the stable support of the vibrating screen plate 211 is achieved. In the present embodiment, the telescopic rods 213 are arranged in four, and the four telescopic rods 213 are evenly distributed along the circumferential direction of the support retaining ring 214, and the length direction of the telescopic rods 213 is parallel to the axial direction of the screening box 1; the telescopic rod 213 includes a fixed section 2131, a sliding section 2133 and a compression spring 2132, the fixed section 2131 and the sliding section 2133 are coaxially arranged, and the fixed section 2131 is arranged in a uniform manner. 131 is fixedly connected to the support retaining ring 214, and the fixed section 2131 is welded to the support retaining ring 214, the sliding section 2133 is fixedly connected to the vibration screen plate 211 at one end away from the fixed section 2131, and the sliding section 2133 is welded to the vibration screen plate 211; the compression spring 2132 is installed in the inner cavity of the fixed section 2131, and one end of the compression spring 2132 is connected to the fixed section 2131, and the other end is connected to the sliding section 2133. In this embodiment, the two ends of the compression spring 2132 are fixedly clamped with the fixed section 2131 and the sliding section 2133 respectively.

[0031] Reference Figure 2 and Figure 3 The lifting member 212 is installed on the screening box 1, and is used to drive the vibrating screen plate 211 to vibrate up and down; the lifting member 212 includes a driving motor 2121 and a cam 2122. The driving motor 2121 is installed on the screening box 1, and the output shaft of the driving motor 2121 extends into the extension section of the screening box 1 and is fixedly connected with the cam 2122. In this embodiment, the output shaft of the driving motor 2121 is key-connected with the cam 2122, and the cam 2122 is located in the inner cavity of the screening box 1, the cam 2122 is located between the vibrating screen plate 211 and the supporting retaining ring 214, and the side wall of the cam 2122 abuts against the bottom wall of the vibrating screen plate 211, so as to drive the vibrating screen plate 211 to vibrate up and down.

[0032] Reference Figure 2 and Figure 4 The centrifugal screening assembly 22 includes a centrifugal screen plate 221, a rotating ring 224, a scraper 225, a transmission member 223 and a driving member 222. The centrifugal screen plate 221 rotates coaxially with the screening box 1. The centrifugal screen plate 221 is located directly below the supporting retaining ring 214. The centrifugal screen plate 221 includes an integrally arranged material receiving portion 2211 and a screening portion 2212. In this embodiment, the material receiving portion 2211 is integrally connected with the screening portion 2212. The screening portion 2212 is arranged in an annular shape. A plurality of sieve holes 2213 are provided on the screening portion 2212 to facilitate the screening of rapeseed seeds for secondary screening. In addition, the screening portion 2212 is arranged close to the side wall of the screening box 1; the driving member 222 is used to drive the centrifugal screen plate 221 to rotate. The driving member 222 includes an active gear ring 2224, an active gear 2222 and a rotating motor 2221. The active gear ring 2224 and the centrifugal screen The plate 221 is coaxially arranged, and in this embodiment, the active gear ring 2224 is integrally connected with the centrifugal screen plate 221, and a clearance groove 2223 for accommodating the active gear ring 2224 is opened on the screening box 1; the rotating motor 2221 is installed on the screening box 1, and in this embodiment, the rotating motor 2221 is fixed to the screening box 1 through a support and bolts, and the output shaft of the rotating motor 2221 is coaxially connected with the active gear 2222. In this embodiment, the output shaft of the rotating motor 2221 is key-connected with the active gear 2222, and the axial direction of the active gear 2222 is parallel to the axial direction of the screening box 1, the teeth of the active gear 2222 extend into the clearance groove 2223, and the active gear 2222 is meshed with the active gear ring 2224, so as to realize the rotation of the centrifugal screen plate 221; the transmission member 223 is used for the rotating ring 224 to rotate synchronously with the centrifugal screen plate 221.

[0033] Reference Figure 2 and Figure 4The transmission member 223 includes a transmission rod 2231, a transmission gear 2232 and a transmission gear ring 2233. The transmission rod 2231 is coaxially arranged with the output shaft of the rotating motor 2221. In this embodiment, the transmission rod 2231 is connected with the output shaft of the rotating motor 2221 through a coupling, so that the transmission rod 2231 and the output shaft of the rotating motor 2221 can rotate synchronously. In addition, the axial direction of the transmission rod 2231 is parallel to the axial direction of the screening box 1, and the transmission rod 2231 is rotatably connected to the screening box 1 through a connecting ear; the transmission rod 2231 is coaxially fixed with the transmission gear 2232. In this embodiment, the transmission rod 2231 is key-connected with the transmission gear 2232, and the transmission gear 2232 is located at the end of the transmission rod 2231 away from the rotating motor 2221; the transmission gear ring 2233 is sleeved on the rotating ring 224 The outer periphery, and the transmission gear ring 2233 is fixedly connected with the rotating ring 224, so that the transmission gear ring 2233 and the rotating ring 224 rotate synchronously, and the teeth of the driving gear 2222 extend into the inner cavity of the screening box 1, and the transmission gear ring 2233 meshes with the transmission gear 2232, so as to drive the rotating ring 224 and the centrifugal sieve plate 221 to rotate synchronously; the rotating ring 224 is coaxially arranged with the screening box 1, and the rotating ring 224 is rotatably connected with the screening box 1; the scraper 225 is fixedly connected with the rotating ring 224, and in the present embodiment, the scraper 225 is welded to the inner side wall of the rotating ring 224, the scraper 225 can be arranged in a vertical plate shape, and can also be arranged in an arc shape, as long as the cleaning of the inner side wall of the screening box 1 is achieved, the scraper 225 is close to the inner side wall of the screening box 1. The side of the inner side wall of the screening box 1 is provided with bristles 226 that fit the inner side wall of the screening box 1.

[0034] Reference Figure 2 and Figure 4The air selection device 5 includes a fan 51, an air guide plate 52 and a plurality of connecting rods 55. The air guide plate 52 is concentrically arranged with the screening box 1, and a flow ring groove 3 is arranged between the air guide plate 52 and the inner side wall of the screening box 1, and the flow ring groove 3 is located directly below the screening part 2212; in the present application, there can be three, four or five connecting rods 55, as long as the air guide plate 52 and the screening box 1 are fixedly connected. In the present embodiment, four connecting rods 55 are arranged, and the four connecting rods 55 are evenly distributed along the circumferential direction of the air guide plate 52, and the air guide plate 52 is fixedly connected with the screening box 1 through the connecting rods 55, and each connecting rod 55 is arranged along the radial direction of the screening box 1 to achieve stable support of the air guide plate 52; a main ventilation duct 53 and a plurality of branch ventilation ducts 54 are opened on the air guide plate 52, and the main ventilation duct 53 is coaxially arranged with the air guide plate 52, and the main ventilation duct 53 is coaxially arranged with the air guide plate 52. The air duct 53 is arranged along the axial direction of the air guide plate 52; in the present application, the number of branch air ducts 54 can be eight, twelve, or sixteen, as long as the airflow generated by the fan 51 is blown out along the circumferential direction of the air guide plate 52. In the present embodiment, the number of branch air ducts 54 is twelve, and the twelve branch air ducts 54 are evenly distributed along the circumferential direction of the air guide plate 52, and each branch air duct 54 is arranged along the radial direction of the air guide plate 52, one end of the branch air duct 54 is connected to the main air duct 53, and the other end is connected to the flow ring groove 3, and the branch air duct 54 is arranged toward the flow ring groove 3; the fan 51 is installed on the air guide plate 52. In the present embodiment, the fan 51 is installed below the air guide plate 52, and the air outlet of the fan 51 is connected to the main air duct 53, so as to realize the air selection operation of the rapeseed seeds after the secondary screening during the process of falling along the flow ring groove 3.

[0035] Reference Figure 1 and Figure 2The waste collecting device 4 includes a feed ring 41, a collection ring 44, a plurality of guide pipes 42 and a negative pressure pump 43 installed on each guide pipe 42. The feed ring 41 is coaxially fixed to the screening box 1. In this embodiment, the feed ring 41 is arranged close to the opening on one side of the screening box 1, and the feed ring 41 is connected to the inner cavity of the screening box 1; the collection ring 44 is sleeved on the screening box 1, and the collection ring 44 is located directly below the feed ring 41. The collection ring 44 is fixedly connected to the screening box 1. In this embodiment, the axis of the collection ring 44 is arranged to intersect with the axis of the screening box 1, and a discharge port 45 is opened at the lower end of the collection ring 44. The collection ring 44 A cloth bag 46 for blocking the discharge port 45 is installed on it, and the cloth bag 46 can be disassembled and replaced to facilitate the centralized collection of light debris in the cloth bag 46; in the present application, the guide pipes 42 can be set to be multiple, can be six, can be seven, can also be eight, as long as the light waste in the rapeseed seeds can be extracted and discharged. In the present embodiment, the guide pipes 42 are set to seven, and the seven guide pipes 42 are evenly distributed along the circumferential direction of the screening box 1. One end of the guide pipe 42 is connected to the feed ring 41, and the other end is connected to the gathering ring 44, and the inner cavity of the feed ring 41, the guide pipe 42 and the gathering ring 44 are connected.

[0036] The implementation principle of the rapeseed wind selection device of the embodiment of the present application is as follows: the rapeseed to be screened is injected into the inner cavity of the screening box 1, and then the driving motor 2121 is adjusted, and the output shaft of the driving motor 2121 drives the cam 2122 to rotate, and the cam 2122 applies force to the vibrating screen plate 211, so that the vibrating screen plate 211 moves upward, and at the same time, the vibrating screen plate 211 applies force to the telescopic rod 213, so that the telescopic rod 213 is in a stretched state, and when the flange part of the cam 2122 is separated from the vibrating screen plate 211, the telescopic rod 2122 is in a stretched state. 3 drives the vibration screen plate 211 to reset, realizes the up and down vibration of the vibration screen plate 211, and disperses the rapeseed to be screened through the vibration screen plate 211, and performs preliminary screening of the rapeseed to be screened; then, adjusts the rotary motor 2221, and the output shaft of the rotary motor 2221 drives the driving gear 2222 to rotate. Since the driving gear 2222 is meshed with the driving gear ring 2224, the driving gear 2222 drives the driving gear ring 2224 to rotate, and the driving gear ring 2224 drives the centrifugal screen plate 221 to move synchronously. After preliminary screening, The rapeseed seeds fall on the receiving part 2211, and the centrifugal screen plate 221 drives the rapeseed seeds after the preliminary screening to move. The rapeseed seeds after the preliminary screening move toward the side of the screening part 2212 under the action of centrifugal force, so that the rapeseed seeds after the preliminary screening are arranged on the screening part 2212 and fall into the flow ring groove 3 along the sieve holes of the screening part 2212, thereby realizing the secondary screening of the rapeseed seeds after the preliminary screening; during the process of the rapeseed seeds after the secondary screening falling along the flow ring groove 3, the fan 51 is adjusted, and the airflow generated by the fan 51 is moved along the wind The air outlet of the machine 51 enters the main ventilation duct 53, and the air flow then moves along the main ventilation duct 53 to the branch ventilation duct 54, and enters the flow ring groove 3 along the branch ventilation duct 54, and the rapeseed seeds falling along the flow ring groove 3 are air-selected; then the negative pressure pump 43 is adjusted, and the light debris in the rapeseed seeds during the air selection process enters the feed ring 41 along the inner cavity of the screening box 1, and then enters the guide pipe 42 along the feed ring 41, and enters the collecting pipe along the guide pipe 42, and then flows into the cloth bag 46 along the collecting pipe, so as to realize the centralized collection of light debris in the rapeseed seeds to be screened.

[0037] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A rapeseed seed air selection device, characterized in that: It comprises a screening box (1), a cloth screen device (2), a wind selection device (5) and a waste collection device (4), wherein the cloth screen device (2), the wind selection device (5) and the waste collection device (4) are all installed on the screening box (1); The cloth screen device (2) comprises a centrifugal screening assembly (22) for rapeseed cloth screening, and the centrifugal screening assembly (22) comprises a centrifugal screening plate (221) and a driving member (222) for driving the centrifugal screening plate (221) to rotate; The centrifugal sieve plate (221) rotates coaxially with the screening box (1); the centrifugal sieve plate (221) comprises a material receiving portion (2211) and a screening portion (2212) which are integrally arranged; the screening portion (2212) is arranged in an annular shape and has a plurality of sieve holes (2213); the screening portion (2212) is arranged close to a side wall of the screening box (1); The wind selection device (5) comprises a fan (51), an air guide plate (52) and a plurality of connecting rods (55); The air guide plate (52) is arranged concentrically with the screening box (1), and a flow annular groove (3) is arranged between the air guide plate (52) and the inner side wall of the screening box (1), and the flow annular groove (3) is located directly below the screening part (2212); A plurality of connecting rods (55) are evenly distributed along the circumferential direction of the air guide plate (52), and the air guide plate (52) and the screening box (1) are fixedly connected via the connecting rods (55); The air guide plate (52) is provided with a main air duct (53) and a plurality of branch air ducts (54); the main air duct (53) is coaxially arranged with the air guide plate (52), and the main air duct (53) is arranged along the axial direction of the air guide plate (52); the plurality of branch air ducts (54) are evenly distributed along the circumferential direction of the air guide plate (52), and each branch air duct (54) is arranged along the radial direction of the air guide plate (52); one end of the branch air duct (54) is connected to the main air duct (53), and the other end is connected to the through-flow annular groove (3), and the branch air duct (54) is arranged toward the through-flow annular groove (3); The fan (51) is installed on the air guide plate (52), and the air outlet of the fan (51) is connected to the main ventilation duct (53); The waste collection device (4) is used for collecting light debris in rapeseed seeds.

2. The rapeseed seed winnowing device according to claim 1, characterized in that: The driving member (222) comprises a driving gear ring (2224), a driving gear (2222) and a rotating motor (2221); The active gear ring (2224) is coaxially fixed to the centrifugal screen plate (221), and a clearance groove (2223) for accommodating the active gear ring (2224) is provided on the screening box (1); The rotating motor (2221) is mounted on the screening box (1), the output shaft of the rotating motor (2221) is coaxially connected to the driving gear (2222), the teeth of the driving gear (2222) extend into the clearance groove (2223), and the driving gear (2222) is meshed with the driving gear ring (2224).

3. The rapeseed seed winnowing device according to claim 1, characterized in that: The cloth screen device (2) also includes a vibrating screen assembly (21) for vibrating and screening rapeseed seeds, wherein the vibrating screen assembly (21) includes a vibrating screen plate (211), a supporting retaining ring (214), a lifting member (212), and a plurality of telescopic rods (213); The support retaining ring (214) is located in the inner cavity of the screening box (1), and the support retaining ring (214) is coaxially fixed to the inner side wall of the screening box (1), and the support retaining ring (214) is located above the centrifugal screen plate (221); The vibrating screen plate (211) is located directly above the supporting retaining ring (214), and the vibrating screen plate (211) is slidably connected to the screening box (1); The plurality of telescopic rods (213) are evenly distributed along the circumferential direction of the support retaining ring (214), and one end of the telescopic rod (213) is fixedly connected to the support retaining ring (214), and the other end is fixedly connected to the vibration screen plate (211); The lifting member (212) is installed on the screening box (1) and is used to drive the vibrating screen plate (211) to move upward.

4. The rapeseed seed winnowing device according to claim 3, characterized in that: The lifting member (212) comprises a driving motor (2121) and a cam (2122); The driving motor (2121) is mounted on the screening box (1); The output shaft of the driving motor (2121) extends into the extension section of the screening box (1) and is fixedly connected to the cam (2122), and the cam (2122) is located in the inner cavity of the screening box (1), and the cam (2122) is located between the vibrating screen plate (211) and the supporting retaining ring (214), and the side wall of the cam (2122) abuts against the bottom wall of the vibrating screen plate (211).

5. The rapeseed seed winnowing device according to claim 4, characterized in that: The telescopic rod (213) comprises a fixed section (2131), a sliding section (2133) and a compression spring (2132); The fixed section (2131) and the sliding section (2133) are coaxially arranged, and the fixed section (2131) is fixedly connected to the support retaining ring (214), and one end of the sliding section (2133) away from the fixed section (2131) is fixedly connected to the vibrating screen plate (211); The compression spring (2132) is installed in the inner cavity of the fixed section (2131), and one end of the compression spring (2132) is connected to the fixed section (2131), and the other end is connected to the sliding section (2133).

6. The rapeseed seed winnowing device according to claim 1, characterized in that: The waste collection device (4) comprises a feed ring (41), a collection ring (44), a plurality of guide pipes (42), and a negative pressure pump (43) installed on each of the guide pipes (42); The feed ring (41) is coaxially fixed on the screening box (1), and the side of the feed ring (41) close to the screening box (1) is in communication with the inner cavity of the screening box (1); The collecting ring (44) is sleeved on the screening box (1), and the collecting ring (44) is located directly below the feeding ring (41), and the collecting ring (44) is fixedly connected to the screening box (1); The plurality of guide pipes (42) are evenly distributed along the circumferential direction of the screening box (1); one end of the guide pipe (42) is connected to the feed ring (41), and the other end is connected to the collection ring (44); and the inner cavities of the feed ring (41), the guide pipe (42) and the collection ring (44) are in communication.

7. The rapeseed seed winnowing device according to claim 6, characterized in that: The axis of the collecting ring (44) is arranged to intersect with the axis of the screening box (1), and a discharge port (45) is provided at a lower end of the collecting ring (44). A cloth bag (46) for blocking the discharge port (45) is installed on the collecting ring (44).

8. The rapeseed seed winnowing device according to claim 2, characterized in that: The centrifugal screening assembly (22) further comprises a rotating ring (224), a scraper (225) and a transmission member (223); The rotating ring (224) is coaxially arranged with the screening box (1), and the rotating ring (224) is rotatably connected with the screening box (1); The scraper (225) is fixedly connected to the rotating ring (224), and a brush (226) that fits the inner wall of the screening box (1) is provided on the side of the scraper (225) close to the inner wall of the screening box (1); The transmission member (223) is used for synchronous rotation of the rotating ring (224) and the centrifugal sieve plate (221).

9. The rapeseed seed winnowing device according to claim 8, characterized in that: The transmission member (223) comprises a transmission rod (2231), a transmission gear (2232) and a transmission gear ring (2233); The transmission rod (2231) is coaxially arranged with the output shaft of the rotating motor (2221); The transmission rod (2231) is coaxially fixed with the transmission gear (2232), and the transmission gear (2232) is located at an end of the transmission rod (2231) away from the rotating motor (2221); The transmission gear ring (2233) is sleeved on the outer circumference of the rotating ring (224), and the transmission gear ring (2233) is fixedly connected to the rotating ring (224), and the transmission gear ring (2233) is meshed with the transmission gear (2232).

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