CN112604957A

CN112604957A - Prickly ash sieve separator

Info

Publication number: CN112604957A
Application number: CN202011577569.6A
Authority: CN
Inventors: 郭关柱; 罗亚南; 毛韦迪; 毛韦捷; 杨小兵
Original assignee: Yunnan Chaozhan Agricultural Science And Technology Development Co ltd; Yunnan Agricultural University
Current assignee: Yunnan Chaozhan Agricultural Science And Technology Development Co ltd; Yunnan Agricultural University
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-04-06

Abstract

The invention relates to a pepper screening machine, which belongs to the technical field of pepper processing equipment and comprises a screening bin, a winnowing bin, a feeding hopper, a material stirring device, a winnowing device and a vibrating screening device, wherein the winnowing bin is installed at the top of the screening bin, the feeding hopper is installed at the top of the winnowing bin, the material stirring device is installed at the lower part of the feeding hopper, the winnowing device positioned in the winnowing bin is installed at a discharge hole of the feeding hopper, and the discharge hole of the winnowing device is connected with the vibrating screening device. The smashed pepper is subjected to winnowing of pepper leaves and branch powder through the winnowing device, and then pepper branches, residual leaves, small stems and the like in the pepper are screened step by step through the vibration screening device, so that the pepper shells and pepper seeds can be screened out cleanly; meanwhile, the pepper screening device adopts a winnowing and vibrating screening device to screen the peppers, so that the labor cost is effectively reduced, and the screening efficiency is greatly improved.

Description

Prickly ash sieve separator

Technical Field

The invention belongs to the technical field of pepper processing equipment, and particularly relates to a pepper screening machine.

Background

The method is characterized in that the field of pepper planting is mostly hilly mountains, particularly, pepper growing in plateau areas has good color and taste, the planting area is wide, pepper branches, leaves, small stems, black seeds and pepper shells need to be screened after being picked and dried in the sun, wherein the branches, the leaves and the small stems are thrown away, and the black seeds and the pepper shells are placed separately and are respectively used for different purposes.

There are three main types of existing screening: the first method is manual screening, the screening efficiency is low, and the effect is not ideal; the second method is a mechanical color selection method, which has good screening effect, but has the biggest problems of large equipment volume, high price, complex operation and high maintenance cost, and is only suitable for performing fine screening again after coarse screening of the pepper; the third method adopts mechanical vibration for screening, and the method has the advantages of low machine cost and simple and convenient operation, can meet the requirement of mass production, and accords with the development trend of pepper screening technology and equipment.

As for the existing vibrating pepper screening machine, two defects mainly exist: on one hand, the screening effect is not ideal, pepper branches, leaves, small stems and the like cannot be screened completely, pepper seeds and pepper shells cannot be separated cleanly enough, and part of pepper seeds can be mixed into the pepper shells; on the other hand, the screening efficiency is low, and the requirement on the screening efficiency cannot be met.

Disclosure of Invention

In order to overcome the problems in the background art, the invention provides a pepper screening machine integrating functions of smashing and winnowing, and aims to solve the problems that pepper branches, leaves, small stems and the like cannot be screened cleanly and screening efficiency is low in the existing equipment.

In order to realize the purpose, the invention is realized by the following technical scheme:

the utility model provides a prickly ash sieve separator includes integrated pepper sieve separator who smashes and selection by winnowing function include screening storehouse 1, selection by winnowing storehouse 2, feeder hopper 4, dial material device, wind selector, vibration screening device, screening storehouse 1's top install selection by winnowing storehouse 2, feeder hopper 4 is installed at the top of selection by winnowing storehouse 2, the lower part of feeder hopper 4 is installed and is dialled the material device, the wind selector that is located selection by winnowing storehouse 2 is installed to the discharge gate of feeder hopper 4, wind selector's discharge gate and vibration screening device are connected.

Further, the material stirring device comprises a material stirring motor 3, a material stirring roller 9 and material stirring blades 10, wherein the material stirring roller 9 is installed on the inner walls of the two ends of the feeding hopper 4 through a bearing, the material stirring blades 10 are evenly arranged on the feeding hopper 4, and the material stirring roller 9 is connected with the material stirring motor 3.

Further, the wind selector include selection by winnowing feed pipe 13, air-supply line 14, fan 15, selection by winnowing discharging pipe 16, prickly ash leaf and branch pole garrulous end collecting box 17, selection by winnowing feed pipe 13 and the bottom exit linkage of feeder hopper 4, install the air-supply line 14 rather than the inner chamber intercommunication on the lateral wall of one side of selection by winnowing feed pipe 13, the air intake of air-supply line 14 is connected with the air outlet of fan 15, install the selection by winnowing discharging pipe 16 that air-supply line 14 corresponds on the lateral wall of the opposite side of selection by winnowing feed pipe 13, the discharge gate and prickly ash leaf and branch pole garrulous end collecting box 17 of selection by winnowing discharging pipe 16 are connected, the pivot of fan 15 is passed through belt pulley.

Further, the outer wall of the screening bin 1 is provided with a tensioning mechanism 34 for tensioning a belt of the belt wheel transmission mechanism I11.

Further, the tensioning mechanism 34 includes an installation seat 35, a tension cylinder 36, an adjusting seat 37, an adjusting rod 38, a spring 39, an adjusting piston 40, and a tensioning wheel 41, the installation seat 35 is fixedly installed on the outer wall of the screening bin 1, the tension cylinder 36 is fixed on the installation seat 35, a thread is provided on the inner wall of one end of the tension cylinder 36, an external thread matched with the thread on the inner wall of the tension cylinder 36 is provided on the adjusting seat 37, the adjusting rod 38 is fixedly installed on the adjusting seat 37, the adjusting piston 40 is installed in the tension cylinder 36, the spring 39 is installed between the piston end of the adjusting piston 40 and the adjusting seat 37, and the tensioning wheel 41 is installed through a rotating shaft after the piston rod of the adjusting piston 40 extends out of the tension.

Further, the vibrating screening device comprises a first screen 18, a first screen cabin 19, a second screen 20, a second screen cabin 21, a third screen 22, a third screen cabin 23, a fourth screen 24, a fourth screen cabin 25, a swing arm I26, a swing arm II 27, a swing arm III 28, a swing arm IV 29, a pepper seed collecting box 30, a connecting rod I31, a connecting rod II 32 and an eccentric wheel 33, wherein the eccentric wheel 33 is arranged on a power output shaft of the driving device 7, the connecting rod I31 and the connecting rod II 32 are hinged on the eccentric wheel 33, the inclined lower end of the second screen 20 is hinged on the connecting rod I31, the upper end of the swing arm I26 is hinged on the wall of the screening cabin 1, the lower end of the swing arm I26 is hinged on the connecting rod at the right side of the first screen 18 and the second screen 20, the inclined lower end of the first screen 18 is hinged on the swing arm II 27, the swing arm II 27 is fixedly arranged on the inner wall of the screening cabin 1, the first screen cabin 19 is, the inclined upper end of the second screen mesh 20 is fixed with the left side of the first screen mesh 18 and is hinged to the swing arm II 27, the inclined lower end of the second screen mesh 20 is fixed with the right side of the first screen mesh 18 through a connecting rod and is hinged to the swing arm I26, the discharge hole of the first screen mesh cabin 19 is positioned above the inclined upper end of the second screen mesh 20, and the second screen mesh cabin 21 is installed at the bottom of the second screen mesh 20; two ends of a fourth screen 24 are respectively hinged to a swing arm III 28 and a swing arm IV 29 which are fixed on the inner walls of two sides of the screening bin 1, a fourth screen cabin 25 is installed at the bottom of the fourth screen 24, a third screen 22 is fixed on the fourth screen 24 through a support, the third screen 22 is located above the fourth screen 24, the inclined upper end of the third screen 22 is hinged to a connecting rod II 32, and a third screen cabin 23 is installed at the bottom of the third screen 22; a through hole is formed in the inclined upper end of the third screen 22, the discharge hole of the second screen 20 is positioned above the through hole in the third screen 22, and the inclined upper end of the fourth screen 24 is positioned below the through hole in the third screen 22; a discharge port is formed at the inclined lower end of the second screen cabin 21, the discharge port of the second screen cabin 21 is positioned above the feed end of the third screen 22, and a pepper seed collecting box 30 is arranged at the discharge end of the third screen 22.

Further, the sieve pores of the first sieve 18 are formed by arranging three sieve pores, namely a strip-shaped hole 42, a fine hole 12 of the pepper sieve and a large hole 5 of the pepper sieve, from the inclined upper end to the inclined lower end in sequence; the aperture of the sieve of the second sieve 20 is larger than the particle size of pepper seeds to be screened and smaller than the particle size of pepper shells; the mesh aperture of the third screen 22 is consistent with that of the fine holes 12 of the pepper screen; the mesh opening of the fourth screen 24 is the same as the mesh opening of the second screen 20.

The invention has the beneficial effects that:

the method comprises the steps of winnowing crushed Chinese prickly ash leaves through a winnowing device, and then screening Chinese prickly ash branches, leaves, small stems and the like existing in the Chinese prickly ash step by step through a vibration screening device, so that Chinese prickly ash shells and Chinese prickly ash seeds can be cleanly screened out; meanwhile, the pepper screening device adopts a winnowing and vibrating screening device to screen the peppers, so that the labor cost is effectively reduced, and the screening efficiency is greatly improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the power transmission portion of the present invention;

figure 3 is a top view of the vibratory screening device of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention and the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in figures 1-3, a prickly ash sieve separator include integrated break with selection by winnowing function prickly ash sieve separator include screening storehouse 1, selection by winnowing storehouse 2, feeder hopper 4, group material device, wind selector, vibration screening plant, screening storehouse 1 the top install selection by winnowing storehouse 2, feed hopper 4 is installed at the top of selection by winnowing storehouse 2, the lower part of feeder hopper 4 is installed and is dialled the material device, the discharge gate of feeder hopper 4 is installed and is located the wind selector in selection by winnowing storehouse 2, wind selector's discharge gate and vibration screening plant are connected. Picking, drying and smashing, placing into a feed hopper 4, stirring the peppers through a stirring device, slowly and orderly entering into a winnowing device, winnowing the lighter materials such as pepper leaves in the peppers out of the peppers, then screening the peppers with light impurities such as the pepper leaves into a vibrating screening device, screening pepper branches, fine impurities, small stems and the like existing in the peppers through the vibrating screening device, then screening the pepper shells and the pepper seeds respectively, and further obtaining the pepper shells and the pepper seeds without impurities.

The bottom of the screening bin 1 is provided with a moving wheel 6 for supporting the screening machine to move on the ground.

In the invention, the material poking device comprises a material poking motor 3, a material poking roller 9 and material poking blades 10, wherein the material poking roller 9 is installed on the inner walls of two ends of a feed hopper 4 through bearings, the material poking blades 10 are uniformly arranged on the feed hopper 4, the material poking roller 9 is connected with the material poking motor 3, the material poking motor 3 drives the material poking roller 9 to slowly rotate, the material poking blades 10 installed on the material poking roller 9 are driven by the material poking roller 9 to poke peppers, so that the peppers slowly and orderly enter the winnowing device, and the winnowing device is convenient for winnowing lighter pepper leaves and other substances in the peppers from the peppers as much as possible.

In the invention, the winnowing device comprises a winnowing feeding pipe 13, an air inlet pipe 14, a fan 15, a winnowing discharging pipe 16, a pepper leaf and branch and stem scrap collecting box 17, the winnowing feeding pipe 13 is connected with an outlet at the bottom of the feeding hopper 4, the air inlet pipe 14 communicated with the inner cavity of the winnowing feeding pipe 13 is arranged on the side wall of one side of the winnowing feeding pipe 13, an air inlet of the air inlet pipe 14 is connected with an air outlet of the fan 15, the winnowing discharging pipe 16 corresponding to the air inlet pipe 14 is arranged on the side wall of the other side of the winnowing feeding pipe 13, a discharging port of the winnowing discharging pipe 16 is connected with the pepper leaf and stem scrap collecting box 17, and a rotating shaft of the fan 15 is connected. The prickly ash enters into selection by winnowing feed pipe 13 from the discharge gate of feeder hopper 4, prickly ash is in the in-process of whereabouts in selection by winnowing feed pipe 13, the pivot and the band pulley drive mechanism I11 of fan 15 are connected, band pulley drive mechanism I11 is at the transmission in-process, drive fan 15 work, fan 15 will carry out the horizontal blow to selection by winnowing feed pipe 13, make lighter material such as prickly ash leaf in selection by winnowing feed pipe 13 blow off from selection by winnowing discharging pipe 16, lighter material such as prickly ash leaf that falls out from selection by winnowing discharging pipe 16 then concentrates through prickly ash leaf and branch pole garrulous end collecting box 17 and collects.

In the invention, the vibrating screening device comprises a first screen 18, a first screen cabin 19, a second screen 20, a second screen cabin 21, a third screen 22, a third screen cabin 23, a fourth screen 24, a fourth screen cabin 25, a swing arm I26, a swing arm II 27, a swing arm III 28, a swing arm IV 29, a pepper seed collecting box 30, a connecting rod I31, a connecting rod II 32 and an eccentric wheel 33, wherein the eccentric wheel 33 is arranged on a power output shaft of a driving device 7, the eccentric wheel 33 is hinged with the connecting rod I31 and the connecting rod II 32, the inclined lower end of the second screen 20 is hinged on the connecting rod I31, the upper end of the swing arm I26 is hinged on the wall of a screening cabin 1, the lower end of the swing arm I26 is hinged on the connecting rod at the right side of the first screen 18 and the second screen 20, the inclined lower end of the first screen 18 is hinged on the swing arm II 27, the swing arm II 27 is fixedly arranged on the inner wall of the screening cabin 1, the first screen cabin, the inclined upper end of the second screen mesh 20 is fixed with the left side of the first screen mesh 18 and is hinged to the swing arm II 27, the inclined lower end of the second screen mesh 20 is fixed with the right side of the first screen mesh 18 through a connecting rod and is hinged to the swing arm I26, the discharge hole of the first screen mesh cabin 19 is positioned above the inclined upper end of the second screen mesh 20, and the second screen mesh cabin 21 is installed at the bottom of the second screen mesh 20; two ends of a fourth screen 24 are respectively hinged to a swing arm III 28 and a swing arm IV 29 which are fixed on the inner walls of two sides of the screening bin 1, a fourth screen cabin 25 is installed at the bottom of the fourth screen 24, a third screen 22 is fixed on the fourth screen 24 through a support, the third screen 22 is located above the fourth screen 24, the inclined upper end of the third screen 22 is hinged to a connecting rod II 32, and a third screen cabin 23 is installed at the bottom of the third screen 22; a through hole is formed in the inclined upper end of the third screen 22, the discharge hole of the second screen 20 is positioned above the through hole in the third screen 22, and the inclined upper end of the fourth screen 24 is positioned below the through hole in the third screen 22; a discharge port is formed at the inclined lower end of the second screen cabin 21, the discharge port of the second screen cabin 21 is positioned above the feed end of the third screen 22, and a pepper seed collecting box 30 is arranged at the discharge end of the third screen 22. The driving device 7 drives the eccentric wheel 33 to rotate, the rotating eccentric wheel 33 drives the connecting rod I31 and the connecting rod II 32 which are installed on the eccentric wheel to move, and the connecting rod I31 drives the first screen 18, the first screen cabin 19, the second screen 20 and the second screen cabin 21 to vibrate under the action of the swing arm I26 and the swing arm II 27 in the moving process. In the movement process, the connecting rod II 32 drives the three screens 22, the third screen cabin 23, the fourth screen 24 and the fourth screen cabin 25 to vibrate under the action of the swing arm III 28 and the swing arm IV 29. The prickly ash without the lighter substances such as prickly ash leaves falls onto the first screen 18 through the discharge hole of the air separation feeding pipe 13. The sieve pores of the first sieve 18 are formed by arranging three sieve pores, namely a strip-shaped pore 42, a fine pore 12 of the pepper sieve and a large pore 5 of the pepper sieve, from the inclined upper end to the inclined lower end in sequence; the aperture of the sieve of the second sieve 20 is larger than the particle size of pepper seeds to be screened and smaller than the particle size of pepper shells; the mesh aperture of the third screen 22 is consistent with that of the fine holes 12 of the pepper screen; the mesh opening of the fourth screen 24 is the same as the mesh opening of the second screen 20. In the vibration process of the first screen 18, the strip-shaped holes 42 are used for sieving small pepper stalks and branches and falling into the first screen cabin 19, the fine pepper screen holes 12 are used for sieving broken pepper powder and falling into the first screen cabin 19, and the pepper shells and pepper seeds fall into the second screen 20 through the large pepper screen holes 5 for screening. The second screen 20 be used for screening prickly ash black seed, the mesh aperture of second screen 20 is greater than the prickly ash seed particle diameter that needs the screening prickly ash and is less than prickly ash shell particle diameter, second screen 20 is at the vibration in-process, separates prickly ash shell and prickly ash seed, and the prickly ash seed after the separation falls into second screen cloth cabin 21, and the prickly ash shell then falls into fourth screen cloth 24. The third screen 22 is used for screening fine impurities mixed in the pepper seeds, and the aperture of the screen hole is smaller than the particle size of the black seeds; the pepper seeds in the second screen cabin 21 fall onto the third screen 22 from the discharge port thereof in the vibration process, the third screen 22 dries fine sundries mixed in the pepper seeds to fall into the third screen cabin 23 for centralized collection, and the pepper seeds are sent into the pepper seed collection box 30 for collection in the vibration process of the third screen 22. The aperture of prickly ash seed collecting box 30 is greater than the particle diameter of prickly ash shell, and after the prickly ash on the second screen cloth 20 fell into the fourth screen cloth 24, the tiny debris that mix with in the prickly ash shell of vibrated fourth screen cloth 24 sieved out and made it fall into fourth screen cloth cabin 25 and concentrate the collection, and simultaneously, the few prickly ash seeds that mix with in the prickly ash shell also can be sieved once more, and the prickly ash shell after the screening is clean is then concentrated the collection through the discharge gate discharge of the fourth screen cloth 24 of vibration. The vibration screening device screens pepper branches, leaves, small stems and the like in peppers step by step, ensures that pepper shells and pepper seeds can be screened out cleanly, and meets the screening requirement.

In the invention, a tensioning mechanism 34 for tensioning a belt of a belt wheel transmission mechanism I11 is arranged on the outer wall of the screening bin 1. The tensioning mechanism 34 comprises an installation seat 35, a tension cylinder 36, an adjusting seat 37, an adjusting rod 38, a spring 39, an adjusting piston 40 and a tensioning wheel 41, the installation seat 35 is fixedly installed on the outer wall of the screening bin 1, the tension cylinder 36 is fixed on the installation seat 35, a thread is arranged on the inner wall of one end of the tension cylinder 36, an external thread matched with the thread on the inner wall of the tension cylinder 36 is arranged on the adjusting seat 37, the adjusting rod 38 is fixedly installed on the adjusting seat 37, the adjusting piston 40 is installed in the tension cylinder 36, the spring 39 is installed between the piston end of the adjusting piston 40 and the adjusting seat 37, and the tensioning wheel 41 is installed through a rotating shaft after the piston rod of the adjusting piston 40 extends out of the tension. In the transmission process of the belt wheel transmission mechanism I11, when the belt of the belt wheel transmission mechanism I looses, the spring 39 can push the adjusting piston 40 to move forwards, so that the adjusting piston 40 pushes the tension pulley 41 to move towards one side of the belt, the wrap angle of the belt on the tension pulley 41 is increased, and the belt is tensioned. The tensioning mechanism 34 is able to automatically effect tensioning of the belt due to the action of the spring 39.

In the invention, the rotating speed of the motor 47 is controlled by the motor controller 8, namely the rotating speed of the eccentric wheel 33 can be changed, so that the vibration frequency of the vibration screening device is changed, and more ideal screening effect and screening efficiency are obtained. Or under the condition of not changing the rotating speed of the motor 47, the eccentric wheel 33 and the belt wheel of the belt wheel transmission mechanism I11 with different eccentric amounts e are replaced, the tension of the belt wheel transmission mechanism I11 is adjusted by the tensioning mechanism 34, and the rotating speed of the eccentric wheel 33 can be changed to change the vibration frequency of the vibration screening device, so that the ideal screening effect and screening efficiency are obtained.

The working process of the invention is as follows:

picking, drying and smashing are placed into a feed hopper 4, a material stirring motor 3 drives a material stirring roller 9 to rotate slowly, the material stirring roller 9 drives material stirring blades 10 installed on the material stirring roller to stir peppers, the peppers slowly and orderly enter a winnowing feeding pipe 13, a fan 15 transversely blows the winnowing feeding pipe 13, and lighter substances such as pepper leaves in the winnowing feeding pipe 13 are blown out from a winnowing discharging pipe 16 and collected through a pepper leaf and branch and stem scrap collecting box 17. The residual pepper enters the first screen 18, the strip-shaped holes 42 are used for screening the small stalks and the branches of the pepper and falling into the first screen cabin 19 in the vibration process of the first screen 18, the fine holes 43 of the pepper screen are used for screening the broken powder of the pepper and falling into the first screen cabin 19, and the pepper shells and the pepper seeds fall into the second screen 20 through the large holes 5 of the pepper screen for screening. The second screen 20 separates the pepper shells and the pepper seeds during the vibration process, the separated pepper seeds fall into the second screen chamber 21, and the pepper shells fall into the fourth screen 24. The pepper seeds in the second screen cabin 21 fall onto the third screen 22 from the discharge port thereof in the vibration process, the third screen 22 dries fine sundries mixed in the pepper seeds to fall into the third screen cabin 23 for centralized collection, and the pepper seeds are sent into the pepper seed collection box 30 for collection in the vibration process of the third screen 22. After the peppers on the second screen 20 fall onto the fourth screen 24, the vibrating fourth screen 24 screens out fine impurities mixed in the pepper shells and enables the fine impurities to fall into the fourth screen cabin 25 for centralized collection, and the cleaned pepper shells are discharged through a discharge port of the vibrating fourth screen 24 for centralized collection.

The method comprises the steps of winnowing crushed Chinese prickly ash leaves through a winnowing device, and then screening Chinese prickly ash branches, residual leaves, small stems and the like existing in the Chinese prickly ash step by step through a vibration screening device, so that Chinese prickly ash shells and Chinese prickly ash seeds can be cleanly screened out; meanwhile, the pepper screening device adopts a winnowing and vibrating screening device to screen the peppers, so that the labor cost is effectively reduced, and the screening efficiency is greatly improved.

Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a prickly ash sieve separator which characterized in that: the prickly ash sieve separator include integrated break with the prickly ash sieve separator of selection by winnowing function including screening storehouse (1), selection by winnowing storehouse (2), feeder hopper (4), dial material device, wind selector, vibration screening device, the top in screening storehouse (1) install selection by winnowing storehouse (2), feeder hopper (4) are installed at the top in selection by winnowing storehouse (2), the lower part of feeder hopper (4) is installed and is dialled the material device, the wind selector that is located selection by winnowing storehouse (2) is installed to the discharge gate of feeder hopper (4), wind selector's discharge gate and vibration screening device are connected.

2. The pepper screening machine according to claim 1, wherein: the material stirring device comprises a material stirring motor (3), a material stirring roller (9) and material stirring blades (10), wherein the material stirring roller (9) is installed on the inner walls of the two ends of the feeding hopper (4) through a bearing, the material stirring blades (10) are uniformly arranged on the feeding hopper (4), and the material stirring roller (9) is connected with the material stirring motor (3).

3. The pepper screening machine according to claim 1 or 2, characterized in that: the wind selector include selection by winnowing feed pipe (13), air-supply line (14), fan (15), selection by winnowing discharging pipe (16), prickly ash leaf and branch pole garrulous end collecting box (17), the bottom exit linkage of selection by winnowing feed pipe (13) and feeder hopper (4), install air-supply line (14) rather than the inner chamber intercommunication on the lateral wall of one side of selection by winnowing feed pipe (13), the air intake and the air outlet of fan (15) of air-supply line (14) are connected, install selection by winnowing discharging pipe (16) that air-supply line (14) correspond on the opposite side lateral wall of selection by winnowing feed pipe (13), the discharge gate and prickly ash leaf and branch pole garrulous end collecting box (17) of selection by winnowing discharging pipe (16) are connected, the power take off hub connection of belt pulley drive mechanism I (11) and drive arrangement (7).

4. The pepper screening machine according to claim 3, wherein: the outer wall of the screening bin (1) is provided with a tensioning mechanism (34) for tensioning a belt of the belt wheel transmission mechanism I (11).

5. The pepper screening machine according to claim 4, wherein: the tensioning mechanism (34) comprises an installation seat (35), a tension cylinder (36), an adjusting seat (37), an adjusting rod (38), a spring (39), an adjusting piston (40) and a tensioning wheel (41), wherein the installation seat (35) is fixedly installed on the outer wall of the screening bin (1), the tension cylinder (36) is fixed on the installation seat (35), a thread is arranged on the inner wall of one end of the tension cylinder (36), an external thread matched with the thread on the inner wall of the tension cylinder (36) is arranged on the adjusting seat (37), the adjusting rod (38) is fixedly installed on the adjusting seat (37), the adjusting piston (40) is installed in the tension cylinder (36), the spring (39) is installed between the piston end of the adjusting piston (40) and the adjusting seat (37), and the tensioning wheel (41) is installed through a rotating shaft after the piston rod of the adjusting piston (40) extends out of the tension cylinder (36).

6. The pepper screening machine according to any one of claims 1-5, wherein: the vibrating screening device comprises a first screen (18), a first screen cabin (19), a second screen (20), a second screen cabin (21), a third screen (22), a third screen cabin (23), a fourth screen (24), a fourth screen cabin (25), a swing arm I (26), a swing arm II (27), a swing arm III (28), a swing arm IV (29), a pepper seed collecting box (30), a connecting rod I (31), a connecting rod II (32) and an eccentric wheel (33), wherein the eccentric wheel (33) is arranged on a power output shaft of a driving device (7), the eccentric wheel (33) is hinged with the connecting rod I (31) and the connecting rod II (32), the inclined lower end of the second screen (20) is hinged on the connecting rod I (31), the upper end of the swing arm I (26) is hinged on the wall of the screening cabin (1), the lower end of the swing arm I (26) is hinged on a connecting rod on the right sides of the first screen (18) and the second screen (20), the lower end of the first screen (18) is hinged to the swing arm II (27), the swing arm II (27) is fixedly mounted on the inner wall of the screening bin (1), a first screen cabin (19) is mounted at the bottom of the first screen (18), the upper end of the second screen (20) is fixed to the left side of the first screen (18) and hinged to the swing arm II (27), the lower end of the second screen (20) is fixed to the right side of the first screen (18) through a connecting rod and hinged to the swing arm I (26), the discharge port of the first screen cabin (19) is located above the upper end of the second screen (20), and the second screen cabin (21) is mounted at the bottom of the second screen (20); two ends of a fourth screen (24) are respectively hinged to a swing arm III (28) and a swing arm IV (29) which are fixed to the inner walls of two sides of the screening bin (1), a fourth screen cabin (25) is installed at the bottom of the fourth screen (24), a third screen (22) is fixed on the fourth screen (24) through a support, the third screen (22) is located above the fourth screen (24), the inclined upper end of the third screen (22) is hinged to a connecting rod II (32), and a third screen cabin (23) is installed at the bottom of the third screen (22); a through hole is formed in the inclined upper end of the third screen (22), the discharge hole of the second screen (20) is positioned above the through hole in the third screen (22), and the inclined upper end of the fourth screen (24) is positioned below the through hole in the third screen (22); a discharge port is formed in the inclined lower end of the second screen cabin (21), the discharge port of the second screen cabin (21) is located above the feed end of the third screen (22), and a pepper seed collecting box (30) is arranged at the discharge end of the third screen (22).

7. The pepper screening machine according to claim 6, wherein: the sieve pores of the first sieve (18) are formed by arranging three sieve pores, namely a strip-shaped pore (42), a fine pore (12) of the pepper sieve and a large pore (5) of the pepper sieve from the inclined upper end to the inclined lower end in sequence; the aperture of the sieve pore of the second sieve (20) is larger than the particle size of the pepper seeds to be screened and smaller than the particle size of the pepper shells; the mesh aperture of the third screen (22) is consistent with that of the fine holes (12) of the pepper screen; the mesh opening of the fourth screen (24) is consistent with the mesh opening of the second screen (20).