CN113070214A

CN113070214A - Wheat bran sieving mechanism

Info

Publication number: CN113070214A
Application number: CN202011511366.7A
Authority: CN
Inventors: 欧阳丰
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-18
Filing date: 2020-12-18
Publication date: 2021-07-06

Abstract

The invention relates to a screening device, in particular to a wheat bran screening device. The invention aims to provide a wheat bran screening device which can remove slightly heavy impurities such as cobblestones, clay blocks and the like and can automatically distinguish flaky wheat bran from powdery wheat bran. The embodiment provides a wheat bran screening device, which comprises a base, a first vertical support, a side support, a second vertical support and the like; the base is a square frame, a round opening is formed in the middle of a square plate on the base, a first vertical support and a second vertical support are fixedly arranged on one side of the base, and a side support is fixedly arranged at one corner of the base. According to the wheat bran screening machine, light wheat bran can be separated from heavy small stones through the first screening mechanism, small dust and large particles can be classified through the second screening mechanism, and automatic wheat bran screening is achieved through the transmission mechanism.

Description

Wheat bran sieving mechanism

Technical Field

The invention relates to a screening device, in particular to a wheat bran screening device.

Background

After being processed by a flour-milling machine, the wheat is changed into flour and bran, the bran is the skin of the wheat, is usually flaky or powdery, has good palatability, contains light-diarrhea sulfate, is beneficial to gastrointestinal peristalsis and relaxing bowels and moistening intestines, is mostly used as feed, and is good feed for late pregnancy and lactating sows.

The wheat bran that takes out from wheat milling machine, the granule is not of uniform size, and contains various impurity, including cobblestone and soil clod etc. need sieve the impurity that wherein can not eat and remove, draws the wheat bran out, and prior art can't reach high-efficient unity to edulcoration and wheat bran screening, causes whole operation power consumption height, and edulcoration and wheat bran screening effect are not good.

Therefore, it is highly desired to develop a bran sifting apparatus capable of removing the slightly heavy impurities such as pebbles, clods and the like and automatically distinguishing the flaky bran from the powdery bran.

Disclosure of Invention

In order to overcome the defects that the impurity removal and wheat bran screening cannot be efficiently unified in the prior art, the overall operation energy consumption is high, and the impurity removal and wheat bran screening effects are not good, the invention has the technical problems that: a wheat bran screening device can remove slightly heavy impurities such as cobblestone and clay block, and can automatically distinguish flaky wheat bran from powdery wheat bran.

The technical implementation scheme of the invention is as follows: the utility model provides a wheat bran sieving mechanism, which comprises a base, first perpendicular support, the collateral branch frame, the support is erected to the second, first screening mechanism, second screening mechanism and drive mechanism, the base is square frame, there is circular mouth in the middle of the square board of higher authority, base one side is fixed to be equipped with first perpendicular support and the perpendicular support of second, the fixed collateral branch frame that is equipped with in base one corner, first screening mechanism part is fixed to be located on the base, first screening mechanism part is located on first perpendicular support and the perpendicular support of second, drive mechanism part is fixed to be located on the collateral branch frame, second screening mechanism is fixed to be located by the base, second screening mechanism part and drive mechanism and fixed connection, drive mechanism part and first screening mechanism fixed connection.

Optionally, the first screening mechanism includes an air duct, a connecting box, a first rotating shaft, a first rotating wheel, a first belt, a second rotating wheel, a second rotating shaft, a first bevel gear, a second bevel gear, a fan and a ninth rotating shaft, the air duct is fixedly disposed on the base, the connecting box is fixedly disposed on one side of the air duct, the connecting box is hollow, the connecting box is communicated with the air duct, the first rotating shaft rotatably penetrates through a side wall of the air duct, the first rotating wheel is fixedly disposed on the first rotating shaft, the second rotating shaft is rotatably disposed on the second vertical support, the second rotating wheel is fixedly disposed on the second rotating shaft, the first belt is wound on the first rotating wheel and the second rotating wheel, the first bevel gear is fixedly disposed on the second rotating shaft, the ninth rotating shaft rotatably penetrates through the first vertical support, the second bevel gear and the fan are fixedly disposed on the ninth rotating shaft, and the second bevel gear is engaged with the first bevel gear;

the first rotating shaft drives the first rotating wheel to rotate, the first rotating wheel transmits rotation to the second rotating wheel through the first belt, the second rotating wheel drives the second rotating shaft to rotate, the second rotating shaft drives the first bevel gear to rotate, the second bevel gear meshed with the first bevel gear rotates, the second bevel gear drives the ninth rotating shaft to rotate, and the ninth rotating shaft drives the fan to rotate.

Optionally, the second screening mechanism comprises a screening box, a motor, a third bevel gear, a fourth bevel gear, a third rotating shaft, a third vertical support, two first connecting rods, two second connecting rods, a second screen and a discharge inclined plate, the screening box is arranged beside the base and communicated with the connecting box, the motor is fixed on the outer wall of the air duct through a support, the third bevel gear is fixedly arranged on an output shaft of the motor, the third vertical supports are arranged, the third vertical support is fixedly arranged below the connecting box, the third rotating shaft rotatably penetrates through the two third vertical supports, the fourth bevel gear is fixedly arranged on the third rotating shaft, the third bevel gear is meshed with the fourth bevel gear, two ends of the third rotating shaft are respectively fixedly provided with one first connecting rod, the first connecting rods are connected with the second connecting rods through rotating shafts, the second connecting rods are rotatably connected with the second screen, the second screen is slidably connected with the screening box, one side of the screening box is provided with a rectangular opening, the discharge sloping plate is fixedly arranged on the bottom line of the rectangular opening;

the motor drives the third bevel gear to rotate, a fourth bevel gear meshed with the third bevel gear rotates, the fourth bevel gear drives the third rotating shaft to rotate, the third rotating shaft drives the first connecting rod to rotate, the first connecting rod drives the right end of the second connecting rod to rotate, the left end of the second connecting rod is stressed to push the second screen, and the second screen reciprocates along the sliding rail on the inner wall of the screening box.

Optionally, the transmission mechanism comprises a rack, a first ratchet wheel, a fourth rotating shaft, a third rotating wheel, a second belt, a second ratchet wheel, a fifth rotating shaft, a fourth rotating wheel, a third belt, a sixth rotating shaft, a fifth rotating wheel, a seventh rotating shaft, a sixth rotating wheel, a first straight gear, a second straight gear, a fourth belt, a seventh rotating wheel, a fifth bevel gear, a sixth bevel gear, an eighth rotating shaft and an eighth rotating wheel, the rack is fixedly arranged on one side of the side surface of the second screen close to the side frame, the fourth rotating shaft and the fifth rotating shaft are rotatably arranged on one side of the side frame close to the second screening mechanism, the first ratchet wheel is fixedly arranged at the upper end of the fourth rotating shaft and is meshed with the rack, the third rotating wheel is fixedly arranged at the lower end of the fourth rotating shaft, the second ratchet wheel is fixedly arranged at the upper end of the fifth rotating shaft, the second ratchet wheel is meshed with the rack, the fourth rotating wheel is fixedly arranged on the fifth rotating shaft, and is arranged below the second ratchet, a sixth rotating shaft, a seventh rotating shaft and an eighth rotating shaft are rotatably arranged on one side, close to the first screening mechanism, of the side support in a penetrating mode, a fifth rotating wheel is fixedly arranged on the sixth rotating shaft, a sixth rotating wheel and a first straight gear are fixedly arranged on the seventh rotating shaft, a second belt is wound on the third rotating wheel and the fifth rotating wheel, a third belt is wound on the fourth rotating wheel and the sixth rotating wheel, a second straight gear and an eighth rotating wheel are fixedly arranged on the eighth rotating shaft, the second straight gear is meshed with the first straight gear, the seventh rotating wheel and a fifth bevel gear are fixedly arranged on the sixth rotating shaft, the seventh rotating wheel is positioned above the fifth rotating wheel, the fifth bevel gear is positioned above the seventh rotating wheel, a fourth belt is wound on the eighth rotating wheel and the seventh rotating wheel, the sixth bevel gear is fixedly arranged on the first rotating shaft, and the sixth bevel gear is meshed with the fifth bevel gear;

when the rack moves from left to right, the rack drives the first ratchet wheel to rotate clockwise, the first ratchet wheel drives the fourth rotating shaft and the third rotating wheel to rotate clockwise, the third rotating wheel transmits the rotation to the fifth rotating wheel through the second belt, the fifth rotating wheel drives the sixth rotating shaft and the fifth bevel gear to rotate clockwise, the fifth bevel gear drives the sixth bevel gear to rotate anticlockwise, when the rack moves from right to left, the rack drives the second ratchet wheel to rotate anticlockwise, the fifth rotating shaft and the fourth rotating wheel are driven to rotate anticlockwise, the fourth rotating wheel transmits the rotation to the sixth rotating wheel through the third belt, the sixth rotating wheel drives the seventh rotating shaft and the first straight gear to rotate anticlockwise, the first straight gear drives the second straight gear to rotate clockwise, the second straight gear drives the eighth rotating shaft and the eighth rotating wheel to rotate clockwise, the eighth rotating wheel transmits the rotation to the seventh rotating wheel through the fourth belt, the seventh rotating wheel drives the sixth rotating shaft and the fifth bevel gear to rotate clockwise, the fifth bevel gear drives the sixth bevel gear to rotate anticlockwise.

Optionally, the dryer also comprises a vibration assembly, the vibration assembly comprises a first cam, two pairs of first supporting plates, two first springs and a first screen, the first cam is fixedly arranged on a first rotating shaft, the two pairs of first supporting plates are symmetrically arranged on two sides of the first screen, the upper first supporting plate of each pair is fixedly connected to the outer wall of the dryer, the lower first supporting plate of each pair is slidably arranged in sliding grooves formed in two sides of the dryer and is fixedly connected with the first screen through a baffle plate, the number of the first springs is two, and the first spring is fixedly arranged between each pair of first supporting plates;

the first rotating shaft rotates anticlockwise to drive the first cam to rotate anticlockwise, when the protruding portion of the first cam touches the first support plate below, the protruding portion of the first cam can be lifted upwards, the first support plate above is fixed, the first support plate below drives the first screen to move upwards, the first support plate extrudes the first spring, after the first cam is not in contact with the first support plate, the elastic force of the first spring can push the first support plate below, and the first support plate below drives the first screen to move downwards.

Optionally, the feeding mechanism further comprises a feeding mechanism, the feeding mechanism comprises a feeding hopper, a ninth rotating wheel, a fifth belt, a tenth rotating shaft, a tenth rotating wheel, a second cam, a third connecting rod, a second supporting plate, a second spring and a shifting lever, the ninth rotating wheel is fixedly arranged on the ninth rotating shaft, the tenth rotating shaft is rotatably arranged on the first vertical support in a penetrating manner, the tenth rotating wheel is fixedly arranged on the tenth rotating shaft, the fifth belt is wound on the ninth rotating wheel and the tenth rotating wheel, the second cam is fixedly arranged on the tenth rotating shaft, one end of the third connecting rod is slidably arranged on the first vertical support, the other end of the third connecting rod is fixedly provided with the shifting lever, the second supporting plate is fixedly arranged on the first vertical support, two ends of the second spring are respectively fixed on the third connecting rod and the second supporting plate, the feeding hopper is fixedly arranged on the air duct, and the shifting lever extends into an opening of the feeding hopper;

the ninth rotating shaft rotates to drive the ninth rotating wheel to rotate, the ninth rotating wheel transmits the rotation to the tenth rotating wheel through the fifth belt, the tenth rotating wheel drives the tenth rotating shaft and the second cam to rotate, the second cam contacts with the third connecting rod when rotating, when the protruding part of the second cam rotates to the upper side, the third connecting rod can be lifted up, the third connecting rod slides upwards along the first vertical support, the second spring can be extruded when the third connecting rod is lifted up, the shifting rod is driven to be lifted up simultaneously, when the protruding part of the second cam rotates to the lower side, the elastic force of the spring pushes the third connecting rod downwards, the shifting rod is driven to move downwards, and the vertical reciprocation of the shifting rod is realized.

Optionally, the device further comprises a sliding plate, a third spring and two pairs of fixed plates, wherein one end of the sliding plate is fixed on the side surface of the second screen, the other end of the sliding plate is connected with the discharging inclined plate in a sliding manner, one pair of fixed plates are fixedly arranged on one side surface of the second screen close to the discharging inclined plate, the other pair of fixed plates are arranged on the outer walls of two sides of the discharging inclined plate, and the third spring is fixedly arranged between the fixed plate on the discharging inclined plate on the same side and the fixed plate on;

when the second screen cloth moves in a reciprocating mode, the sliding plate is pushed to slide along the slide ways in the discharging inclined plate, the direction of the slide ways is consistent with the moving direction of the second screen cloth, meanwhile, the second screen cloth drives the two fixing plates on the second screen cloth to move left and right, when the fixing plates move left, the fixing plates extrude the third spring, and when the fixing plates move right, the fixing plates gradually loosen the extrusion on the spring.

Optionally, the screening device further comprises a collecting box, the collecting box is arranged below the screening box and is in sliding connection with the screening box, and the collecting box is provided with a handle and four wheels;

the collecting box is used for collecting fine dust screened by the second screening mechanism, needs to be emptied after the collection is full, and is pulled out by pulling the handle.

Optionally, the fan further comprises a vent, wherein the vent is arranged on one side of the air duct and is positioned outside the fan;

the ventilation opening ensures the circulation of air.

Compared with the prior art, the invention has the following advantages: according to the wheat bran screening machine, the lighter wheat bran can be separated from the heavier small stones through the first screening mechanism, the smaller dust and the larger particles can be classified through the second screening mechanism, and the only power can be transmitted to the first screening mechanism, the vibration assembly and the feeding mechanism through the transmission mechanism, so that the wheat bran can be automatically screened, and the power is saved.

Through the vibration subassembly, can be to the material that falls through first screening mechanism pitch, make its secondary receive the wind-blowing of fan, can not blow away the wheat bran that is blown before when falling like this in blowing in the connecting box, realized abundant screening, avoided the waste of wheat bran.

Through the feeding mechanism, after a large amount of wheat bran is manually placed into the feeding hopper at one time, the problem of blockage in the feeding process can be automatically solved, the wheat bran is prevented from being blocked at the feeding opening, and the time of manual labor is saved.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a partial perspective view of the present invention.

Fig. 3 is a schematic perspective view of the first screening mechanism of the present invention.

Fig. 4 is a schematic perspective view of a second screening mechanism according to the present invention.

Fig. 5 is a partial perspective view of the transmission mechanism of the present invention.

Fig. 6 is a partial perspective view of the transmission mechanism of the present invention.

Fig. 7 is a partial perspective view of the transmission mechanism of the present invention.

Fig. 8 is a schematic perspective view of the feeding mechanism of the present invention.

Fig. 9 is a perspective view of the vent of the present invention.

The parts are labeled as follows: 1: base, 101: first vertical support, 102: side stand, 103: second vertical support, 2 a: first screening mechanism, 201: dryer, 2011: connection box, 202: first rotating shaft, 203: first wheel, 204: first belt, 205: second wheel, 206: second rotating shaft, 207: first bevel gear, 208: second bevel gear, 209: fan, 2091: ninth rotation shaft, 2 b: vibration assembly, 210: first cam, 211: first plate, 212: first spring, 213: first screen, 3: second screening mechanism, 301: screening box, 302: motor, 303: third bevel gear, 304: fourth bevel gear, 305: third shaft, 306: third vertical support, 307: first connecting rod, 308: second connecting rod, 309: second screen, 310: discharge sloping plate, 4: transmission mechanism, 401: rack, 402: first ratchet, 403: fourth rotation shaft, 404: third wheel, 405: second belt, 406: second ratchet, 407: fifth rotating shaft, 408: fourth runner, 409: third belt, 410: sixth rotating shaft, 411: fifth wheel, 412: seventh rotation shaft, 413: sixth reel, 414: first straight gear, 415: second spur gear, 416: fourth belt, 417: seventh reel, 418: fifth bevel gear, 419: sixth bevel gear, 420: eighth rotation shaft, 421: eighth runner, 5: feeding mechanism, 501: a feeding hopper, 502: ninth wheel, 503: fifth belt, 504: tenth rotation shaft, 505: tenth wheel, 506: second cam, 507: third connecting rod, 5071: second plate, 508: second spring, 509: deflector rod, 6: a sliding plate, 601: third spring, 602: fixing plate, 7: collection box, 8: and a vent.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings. It is only noted that the invention is intended to be limited to the specific forms set forth herein, including any reference to the drawings, as well as any other specific forms of embodiments of the invention.

Example 1

A wheat bran screening device is shown in figures 1-2 and comprises a base 1, a first vertical support 101, a side support 102, a second vertical support 103, a first screening mechanism 2a, a second screening mechanism 3 and a transmission mechanism 4, wherein the base 1 is a square frame, a round opening is formed in the middle of a square plate on the base 1, the first vertical support 101 and the second vertical support 103 are fixedly arranged on the right side of the base 1, the side support 102 is fixedly arranged at the front end of the left side of the base 1, the first screening mechanism 2a is fixedly arranged on the first vertical support 101 and the second vertical support 103, the transmission mechanism 4 is fixedly arranged on the side support 102, the second screening mechanism 3 is fixedly arranged beside the base 1, the second screening mechanism 3 is fixedly connected with the transmission mechanism 4, and the transmission mechanism 4 is fixedly connected with the first screening mechanism 2 a.

The during operation starts the wheat bran sieving mechanism, and the wheat bran that will carry out the screening is poured into first screening mechanism 2a, and first screening mechanism 2a can be with lighter wheat bran and wheat bran granule and heavier earth and gravel separately, and the wheat bran granule of screening get into second screening mechanism 3, and second screening mechanism 3 can be with less dust and great granule separately, and drive mechanism 4 can pass power for first screening mechanism 2 a.

Example 2

On the basis of embodiment 1, as shown in fig. 1 to 8, the first screening mechanism 2a includes an air duct 201, a connecting box 2011, a first rotating shaft 202, a first rotating wheel 203, a first belt 204, a second rotating wheel 205, a second rotating shaft 206, a first bevel gear 207, a second bevel gear 208, a fan 209 and a ninth rotating shaft 2091, the air duct 201 is fixedly disposed on the base 1, the connecting box 2011 is fixedly disposed on the left side of the air duct 201, the connecting box 2011 is hollow, the connecting box 2011 is connected with the air duct 201, the first rotating shaft 202 is rotatably disposed on the front side wall of the air duct 201, the first rotating wheel 203 is fixedly disposed on the first rotating shaft 202, and the second rotating shaft 206 is disposed on the first rotating shaft 202First, the Upper ends of two vertical supports 103A second rotating wheel 205 is fixedly arranged on a second rotating shaft 206, a first belt 204 is wound on the first rotating wheel 203 and the second rotating wheel 205, a first bevel gear 207 is fixedly arranged on the second rotating shaft 206,ninth rotation shaft 2091The second bevel gear 208 and the fan 209 are fixed on the ninth rotation shaft 2091, and the second bevel gear 208 is engaged with the first bevel gear 207.

First pivot 202 rotates and drives first runner 203 and rotate, first runner 203 passes the rotation to second runner 205 through first belt 204, second runner 205 drives second pivot 206 and rotates, second pivot 206 drives first bevel gear 207 and rotates, second bevel gear 208 with first bevel gear 207 meshing rotates, drive ninth pivot 2091 and rotate, ninth pivot 2091 drives fan 209 and rotates, the wheat bran falls from the top, because the wheat bran is lighter, the whereabouts in-process can be blown to the left side by wind, get into the connecting box 2011 in, and heavier gravel and clay piece etc. then can fall.

As shown in fig. 1 and 4, the second screening mechanism 3 includes a screening box 301, a motor 302, a third bevel gear 303, a fourth bevel gear 304, a third rotating shaft 305, a third vertical support 306, first connecting rods 307, second connecting rods 308, a second screen 309 and a discharge sloping plate 310, the screening box 301 is disposed on the left side of the base 1, the right side of the screening box 301 is communicated with the left side of a connecting box 2011, the motor 302 is fixed on the outer wall of the left side of the air duct 201 through a support, the third bevel gear 303 is fixed on the output shaft of the motor 302, there are two third vertical supports 306, the third vertical supports 306 are fixed below the connecting box 2011, the third rotating shaft 305 is rotatably disposed through the two third vertical supports 306, the fourth bevel gear 304 is fixed on the third rotating shaft 305, the third bevel gear 303 is engaged with the fourth bevel gear 304, both ends of the third rotating shaft 305 are fixedly provided with one first connecting rod 307, the first connecting rod 307 is connected with the right end of the second connecting rod 308 through a rotating, the left end of the second connecting rod 308 is rotatably connected with the second screen 309, the second screen 309 is slidably connected with the front inner wall and the rear inner wall of the screening box 301, the left side surface of the screening box 301 is provided with a rectangular opening, and the discharging inclined plate 310 is fixedly arranged on the screening box 301Rectangular opening At the base line of the mouth.

Starting the motor 302, the motor 302 drives the third bevel gear 303 to rotate, the fourth bevel gear 304 meshed with the third bevel gear 303 rotates, the fourth bevel gear 304 drives the third rotating shaft 305 to rotate, the third rotating shaft 305 drives the first connecting rod 307 to rotate, the first connecting rod 307 drives the right end of the second connecting rod 308 to rotate, the left end of the second connecting rod 308 is forced to push the second screen 309, so that the second screen 309 reciprocates along the sliding rails on the front and rear inner walls of the screening box 301, the moving direction of the second screen 309 is from the left lower position to the right higher position, wheat bran enters the screening box 301 through the connecting box 2011, the wheat bran falls onto the second screen 309, the second screen 309 reciprocates, smaller dust falls from the second screen 309, larger particles cannot pass through the holes of the second screen 309, the second screen 309 inclines downwards to the left, larger particles slide down along the second screen 309 and pass through the opening on the side surface of the screening box 301, slide out of the discharge chute 310.

As shown in fig. 5-7, the transmission mechanism 4Comprises a rack 401, a first ratchet wheel 402, a fourth rotating shaft 403, a third rotating wheel 404, a second belt 405, a second ratchet wheel 406, a fifth rotating shaft 407, a fourth rotating wheel 408, a third belt 409, a sixth rotating shaft 410, a fifth rotating wheel 411, a seventh rotating shaft 412, a sixth rotating wheel 413, a first straight gear 414, a second straight gear 415, a fourth belt 416, a seventh rotating wheel 417, a fifth bevel gear 418, a sixth bevel gear 419, an eighth rotating shaft 420 and an eighth rotating wheel 421, wherein the rack 401 is fixedly arranged at the front side of a second screen 309, the fourth rotating shaft 403 and the fifth rotating shaft 407 are rotatably arranged at the left end of a side bracket 102, the first ratchet wheel 402 is fixedly arranged at the upper end of the fourth rotating shaft 403, the first ratchet wheel 402 is meshed with the rack 401, the third rotating wheel 404 is fixedly arranged at the lower end of the fourth rotating shaft 403, the second ratchet wheel 406 is fixedly arranged at the upper end of the fifth rotating shaft 407, the second ratchet wheel 406 is meshed with the rack 401, the fourth rotating wheel 408 is fixedly arranged on the fifth, the fourth rotating wheel 408 is located below the second ratchet 406, the sixth rotating shaft 410, the seventh rotating shaft 412 and the eighth rotating shaft 420 are rotatably disposed through the right end of the side bracket 102, the sixth rotating shaft 410 is located at the right side of the seventh rotating shaft 412 and the eighth rotating shaft 420, the eighth rotating shaft 420 is located at the right rear of the seventh rotating shaft 412,the fifth wheel 411 is fixed on the sixth shaft 410 A sixth pulley 413 and a first straight gear 414 are fixed on the seventh shaft 412, and a second belt 405 is wound around the third pulley 404 And a fifth pulley 411, a third belt 409 wound around the fourth pulley 408 and the sixth pulley 413, a second spur gear 415 and an eighth spur gear 415 A rotary wheel 421 fixed on the eighth rotary shaft 420, a second spur gear 415 meshed with the first spur gear 414, a seventh rotary wheel 417 and a fourth rotary wheel A five-bevel gear 418 is fixedly provided on the sixth rotating shaft 410,the seventh pulley 417 is located above the fifth pulley 411, the fifth bevel gear 418 is located above the seventh pulley 417,a fourth belt 416 is wound around the eighth and

seventh pulleys

421 and 417, and a sixth bevel gear 419 is fixed to Positioned on the first rotating shaft 202, a sixth bevel gear 419 is meshed with the fifth bevel gear 418。

When the second screen 309 reciprocates, the rack 401 is driven to reciprocate, when the rack 401 moves from left to right, the rack 401 drives the first ratchet 402 to rotate clockwise, the second ratchet 406 does not rotate, the first ratchet 402 rotates to drive the fourth rotating shaft 403 to rotate clockwise, the fourth rotating shaft 403 drives the third rotating wheel 404 to rotate clockwise, the third rotating wheel 404 transmits the rotation to the fifth rotating wheel 411 through the second belt 405, the fifth rotating wheel 411 drives the sixth rotating shaft 410 to rotate clockwise, the sixth rotating shaft 410 drives the fifth bevel gear 418 to rotate clockwise, the fifth bevel gear 418 drives the sixth bevel gear 419 to rotate counterclockwise, when the rack 401 moves from right to left, the rack 401 drives the second ratchet 406 to rotate counterclockwise, at this time, the first ratchet 402 does not rotate, the second ratchet 406 drives the fifth rotating shaft 407 to rotate counterclockwise, the fifth rotating shaft 407 drives the fourth rotating wheel 408 to rotate counterclockwise, the fourth wheel 408 transmits rotation to the sixth wheel 413 through the third belt 409, the sixth wheel 413 drives the seventh rotating shaft 412 to rotate counterclockwise, the seventh rotating shaft 412 drives the first straight gear 414 to rotate counterclockwise, the first straight gear 414 drives the second straight gear 415 to rotate clockwise, the second straight gear 415 drives the eighth rotating shaft 420 to rotate clockwise, the eighth rotating shaft 420 drives the eighth wheel 421 to rotate clockwise, the eighth wheel 421 transmits rotation to the seventh wheel 417 through the fourth belt 416, the seventh wheel 417 drives the sixth rotating shaft 410 to rotate clockwise, the sixth rotating shaft 410 drives the fifth bevel gear 418 to rotate clockwise, the fifth bevel gear 418 drives the sixth bevel gear 419 to rotate counterclockwise, so that when the second screen 309 moves reciprocally, the sixth bevel gear 419 can be driven to move counterclockwise no matter moving from left to right or from right to left, and the first rotating shaft 202 can be driven to rotate counterclockwise continuously, thereby achieving the function of transmitting power from the second screening mechanism 3 to the first screening mechanism 2 a.

Example 3

On the basis of embodiment 2, as shown in fig. 1, fig. 3-4 and fig. 8-9, the vibrating component 2b is further included, the vibrating component 2b includes a first cam 210, a first support plate 211, a first spring 212 and a first screen 213,the first cam 210 is fixed On the first rotating shaft 202, there are two pairs of first supporting plates 211, the two pairs of first supporting plates 211 are symmetrically arranged on the front and back sides of the first screen 213, the upper first supporting plate 211 of each pair is fixedly connected to the outer wall of the air duct 201, and the lower first supporting plate 211 of each pair is slidably connected to the outer wall of the air duct 201 Is arranged in the chutes arranged on the two sides of the wind barrel 201 in a penetrating way and is fixedly connected with the first screen 213 through a baffle plate, and the first spring 212 is provided with Two, a first spring 212 is fixedly arranged between each pair of first supporting plates 211.

When the first cam 210 does not contact with the first support plate 211, the elastic force of the first spring 212 pushes the first support plate 211 below, and the first support plate 211 below drives the first screen 213 to move downwards, so that the first screen 213 reciprocates upwards and downwards.

As shown in fig. 8, the device further includes a feeding mechanism 5, the feeding mechanism 5 includes a feeding hopper 501, a ninth wheel 502, a fifth belt 503, a tenth rotating shaft 504, a tenth wheel 505, a second cam 506, a third connecting rod 507, a second support 5071, a second spring 508 and a shifting lever 509, the ninth wheel 502 is fixedly disposed at the right end of the ninth rotating shaft 2091, the tenth rotating shaft 504 is rotatably disposed on the first vertical support 101, the tenth wheel 505 is fixedly disposed on the tenth rotating shaft 504, the fifth belt 503 is wound on the ninth wheel 502 and the tenth wheel 505, the second cam 506 is fixedly disposed on the tenth rotating shaft 504,the right end of the third connecting rod 507 is arranged on the first connecting rod in a sliding way On the vertical support 101The left end of the third connecting rod 507 is fixedly provided with a shift lever 509, the second support plate 5071 is fixedly arranged on the first vertical support 101, and two ends of the second spring 508 are respectively fixed on the third connecting rod 507 and the second support plate 5071 and enterThe hopper 501 is fixedly provided On the air duct 201, a shift lever 509 extends into the opening of the hopper 501.

The ninth rotating shaft 2091 rotates to drive the ninth rotating wheel 502 to rotate, the ninth rotating wheel 502 transmits the rotation to the tenth rotating wheel 505 through the fifth belt 503, the tenth rotating wheel 505 drives the tenth rotating shaft 504 to rotate, the tenth rotating shaft 504 drives the second cam 506 to rotate, the second cam 506 contacts with the third connecting rod 507 when rotating, when the protruding part of the second cam 506 rotates to the upper side, the third connecting rod 507 is lifted, the third connecting rod 507 slides upwards along the first vertical support 101, the third connecting rod 507 presses the second spring 508 when being lifted, meanwhile, the shifting lever 509 is driven to be lifted, when the protruding part of the second cam 506 rotates to the lower side, the elastic force of the spring pushes the third connecting rod 507 downwards to drive the shifting lever 509 to move downwards, so that the vertical reciprocating of the shifting lever 509 is realized, and the shifting lever 509 can shift downwards wheat bran which cannot fall down and is blocked in the feeding hopper 501.

As shown in fig. 4, the screen cloth further comprises a sliding plate 6, a third spring 601 and a fixed plate 602, wherein the right end of the sliding plate 6 is fixed on the front side surface of the second screen mesh 309, the left end of the sliding plate 6 is slidably connected with the discharge sloping plate 310, two pairs of the fixed plates 602 are provided, one pair is fixedly provided on the left side surface of the second screen mesh 309, the other pair is provided on the outer wall of the two sides of the discharge sloping plate 310, and the third spring 601 is fixedly provided between the fixed plate 602 on the discharge sloping plate 310 on the same side and.

When the second screen mesh 309 reciprocates, the sliding plate 6 is pushed to slide along the slide way in the discharge sloping plate 310, the direction of the slide way is consistent with the moving direction of the second screen mesh 309, meanwhile, the second screen mesh 309 drives the two fixing plates 602 thereon to move left and right, when moving left, the fixing plates 602 extrude the third spring 601, and when moving right, the fixing plates 602 gradually loosen the extrusion on the spring.

As shown in figure 1 of the drawings, in which,the screening device also comprises a collecting box 7, wherein the collecting box 7 is arranged below the screening box 301 and is connected with the screening box 301 in a sliding manner And a handle and four wheels are arranged on the collecting box 7.

The collecting box 7 is used for collecting fine dust screened by the second screening mechanism 3, and when the collecting box is full, the dust needs to be emptied, the handle can be pulled manually to pull out the collecting box 7, and the collecting box 7 is put back after the dust is emptied.

As shown in fig. 9, a vent 8 is further included, and the vent 8 is disposed on the upper right side of the air duct 201 and outside the fan 209.

The ventilation opening 8 is arranged at the right side of the fan 209, and the ventilation opening 8 ensures the circulation of air.

Although embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.

Claims

1. The utility model provides a wheat bran sieving mechanism, erects support (103) including base (1), first perpendicular support (101), collateral branch frame (102) and second, and base (1) is square frame, has circular mouth in the middle of the square board of higher authority, and base (1) one side is fixed to be equipped with first perpendicular support (101) and second and erects support (103), and base (1) one corner is fixed and is equipped with collateral branch frame (102), characterized by: still including first screening mechanism (2a), second screening mechanism (3) and drive mechanism (4), first screening mechanism (2a) part is fixed to be located on base (1), first screening mechanism (2a) part is located on first perpendicular support (101) and second perpendicular support (103), drive mechanism (4) part is fixed to be located on side support (102), second screening mechanism (3) is fixed to be located by base (1), second screening mechanism (3) part and drive mechanism (4) and fixed connection, drive mechanism (4) part and first screening mechanism (2a) fixed connection.

2. A wheat bran screening apparatus as claimed in claim 1, wherein: the first screening mechanism (2a) comprises an air duct (201), a connecting box (2011), a first rotating shaft (202), a first rotating wheel (203), a first belt (204), a second rotating wheel (205), a second rotating shaft (206), a first bevel gear (207), a second bevel gear (208), a fan (209) and a ninth rotating shaft (2091), the air duct (201) is fixedly arranged on the base (1), the connecting box (2011) is fixedly arranged on one side of the air duct (201), the connecting box (2011) is hollow, the connecting box (2011) is communicated with the air duct (201), the first rotating shaft (202) is rotatably arranged on the side wall of the air duct (201), the first rotating wheel (203) is fixedly arranged on the first rotating shaft (202), the second rotating shaft (206) is rotatably arranged on the second vertical support (103), the second rotating wheel (205) is fixedly arranged on the second rotating shaft (206), the first belt (204) is wound on the first rotating wheel (203) and the second rotating wheel (205), the first bevel gear (207) is fixedly arranged on the second rotating shaft (206), the ninth rotating shaft (2091) is rotatably arranged on the first vertical support (101) in a penetrating way, the second bevel gear (208) and the fan (209) are fixedly arranged on the ninth rotating shaft (2091), and the second bevel gear (208) is meshed with the first bevel gear (207);

the first rotating shaft (202) rotates to drive the first rotating wheel (203) to rotate, the first rotating wheel (203) transmits rotation to the second rotating wheel (205) through the first belt (204), the second rotating wheel (205) drives the second rotating shaft (206) to rotate, the second rotating shaft (206) drives the first bevel gear (207) to rotate, the second bevel gear (208) meshed with the first bevel gear (207) rotates to drive the ninth rotating shaft (2091) to rotate, and the ninth rotating shaft (2091) drives the fan (209) to rotate.

3. A wheat bran screening apparatus as claimed in claim 2, wherein: the second screening mechanism (3) comprises a screening box (301), a motor (302), a third bevel gear (303), a fourth bevel gear (304), a third rotating shaft (305), a third vertical support (306), a first connecting rod (307), a second connecting rod (308), a second screen (309) and a discharging inclined plate (310), the screening box (301) is arranged beside the base (1), the screening box (301) is communicated with a connecting box (2011), the motor (302) is fixed on the outer wall of the air duct (201) through supports, the third bevel gear (303) is fixedly arranged on an output shaft of the motor (302), the number of the third vertical supports (306) is two, the third vertical supports (306) are fixedly arranged below the connecting box (2011), the third rotating shaft (305) rotatably penetrates through the two third vertical supports (306), the fourth bevel gear (304) is fixedly arranged on the third rotating shaft (305), and the third bevel gear (303) is meshed with the fourth bevel gear (304), a first connecting rod (307) is fixedly arranged at each of two ends of a third rotating shaft (305), the first connecting rod (307) is connected with a second connecting rod (308) through the rotating shaft, the second connecting rod (308) is rotatably connected with a second screen (309), the second screen (309) is slidably connected with a screening box (301), a rectangular opening is formed in one side of the screening box (301), and a discharging inclined plate (310) is fixedly arranged on the bottom line of the rectangular opening; the motor (302) drives the third bevel gear (303) to rotate, the fourth bevel gear (304) meshed with the third bevel gear (303) rotates, the fourth bevel gear (304) drives the third rotating shaft (305) to rotate, the third rotating shaft (305) drives the first connecting rod (307) to rotate, the first connecting rod (307) drives the right end of the second connecting rod (308) to rotate, the left end of the second connecting rod (308) is stressed to push the second screen (309), and the second screen (309) moves in a reciprocating mode along a sliding rail on the inner wall of the screening box (301).

4. A wheat bran screening apparatus as claimed in claim 3, wherein: the transmission mechanism (4) comprises a rack (401), a first ratchet wheel (402), a fourth rotating shaft (403), a third rotating wheel (404), a second belt (405), a second ratchet wheel (406), a fifth rotating shaft (407), a fourth rotating wheel (408), a third belt (409), a sixth rotating shaft (410), a fifth rotating wheel (411), a seventh rotating shaft (412), a sixth rotating wheel (413), a first straight gear (414), a second straight gear (415), a fourth belt (416), a seventh rotating wheel (417), a fifth bevel gear (418), a sixth bevel gear (419), an eighth rotating shaft (420) and an eighth rotating wheel (421), the rack (401) is fixedly arranged on one side of the side surface of the second screen (309) close to the side bracket (102), the fourth rotating shaft (403) and the fifth rotating shaft (407) rotatably penetrate through the side of the side bracket (102) close to the second screening mechanism (3), the first ratchet wheel (402) is fixedly arranged at the upper end of the fourth rotating shaft (403), the first ratchet wheel (402) is meshed with the rack (401), the third rotating wheel (404) is fixedly arranged at the lower end of the fourth rotating shaft (403), the second ratchet wheel (406) is fixedly arranged at the upper end of the fifth rotating shaft (407), the second ratchet wheel (406) is meshed with the rack (401), the fourth rotating wheel (408) is fixedly arranged on the fifth rotating shaft (407), the fourth rotating wheel (408) is positioned below the second ratchet wheel (406), the sixth rotating shaft (410), the seventh rotating shaft (412) and the eighth rotating shaft (420) are rotatably arranged on one side, close to the first screening mechanism (2a), of the side bracket (102), the fifth rotating wheel (411) is fixedly arranged on the sixth rotating shaft (410), the sixth rotating wheel (413) and the first straight gear (414) are fixedly arranged on the seventh rotating shaft (412), the second belt (405) is wound on the third rotating wheel (404) and the fifth rotating wheel (411), and the third belt (409) is wound on the fourth rotating wheel (408) and the sixth rotating wheel (413), a second straight gear (415) and an eighth rotating wheel (421) are fixedly arranged on an eighth rotating shaft (420), the second straight gear (415) is meshed with the first straight gear (414), a seventh rotating wheel (417) and a fifth bevel gear (418) are fixedly arranged on a sixth rotating shaft (410), the seventh rotating wheel (417) is positioned above the fifth rotating wheel (411), the fifth bevel gear (418) is positioned above the seventh rotating wheel (417), a fourth belt (416) is wound on the eighth rotating wheel (421) and the seventh rotating wheel (417), a sixth bevel gear (419) is fixedly arranged on the first rotating shaft (202), and the sixth bevel gear (419) is meshed with the fifth bevel gear (418);

when the rack (401) moves from left to right, the rack (401) drives the first ratchet wheel (402) to rotate clockwise, the first ratchet wheel (402) drives the fourth rotating shaft (403) and the third rotating wheel (404) to rotate clockwise, the third rotating wheel (404) transmits the rotation to the fifth rotating wheel (411) through the second belt (405), the fifth rotating wheel (411) drives the sixth rotating shaft (410) and the fifth bevel gear (418) to rotate clockwise, the fifth bevel gear (418) drives the sixth bevel gear (419) to rotate anticlockwise, when the rack (401) moves from right to left, the rack (401) drives the second ratchet wheel (406) to rotate anticlockwise, the second ratchet wheel (406) drives the fifth rotating shaft (407) and the fourth rotating wheel (408) to rotate anticlockwise, the fourth rotating wheel (408) transmits the rotation to the sixth rotating wheel (413) through the third belt (409), the sixth rotating wheel (413) drives the seventh rotating shaft (412) and the first straight gear (414) to rotate anticlockwise, the first straight gear (414) drives the second straight gear (415) to rotate clockwise, the second straight gear (415) drives the eighth rotating shaft (420) and the eighth rotating wheel (421) to rotate clockwise, the eighth rotating wheel (421) transmits the rotation to the seventh rotating wheel (417) through the fourth belt (416), the seventh rotating wheel (417) drives the sixth rotating shaft (410) to rotate clockwise and the fifth bevel gear (418) to rotate clockwise, and the fifth bevel gear (418) drives the sixth bevel gear (419) to rotate anticlockwise.

5. A wheat bran screening apparatus as claimed in claim 4, wherein: the vibrating screen is characterized by further comprising a vibrating component (2b), wherein the vibrating component (2b) comprises a first cam (210), first support plates (211), first springs (212) and first screens (213), the first cam (210) is fixedly arranged on the first rotating shaft (202), two pairs of the first support plates (211) are arranged, the two pairs of the first support plates (211) are symmetrically arranged on two sides of the first screens (213), the first support plate (211) above each pair is fixedly connected to the outer wall of the air duct (201), the first support plate (211) below each pair is slidably arranged in sliding grooves formed in two sides of the air duct (201) in a penetrating mode and is fixedly connected with the first screens (213) through a blocking piece, two first springs (212) are arranged, and the first springs (212) are fixedly arranged between each pair of the first support plates (211);

the first rotating shaft (202) rotates anticlockwise to drive the first cam (210) to rotate anticlockwise, when the protruding portion of the first cam (210) touches the first support plate (211) below, the protruding portion of the first cam can be lifted upwards, the first support plate (211) above is fixed, the first support plate (211) below drives the first screen (213) to move upwards, the first support plate (211) extrudes the first spring (212), when the first cam (210) does not contact with the first support plate (211), the elastic force of the first spring (212) can push the first support plate (211) below, and the first support plate (211) below drives the first screen (213) to move downwards.

6. A wheat bran screening apparatus as claimed in claim 5, wherein: the automatic feeding device also comprises a feeding mechanism (5), wherein the feeding mechanism (5) comprises a feeding hopper (501), a ninth rotating wheel (502), a fifth belt (503), a tenth rotating shaft (504), a tenth rotating wheel (505), a second cam (506), a third connecting rod (507), a second supporting plate (5071), a second spring (508) and a shifting lever (509), the ninth rotating wheel (502) is fixedly arranged on the ninth rotating shaft (2091), the tenth rotating shaft (504) is rotatably arranged on the first vertical bracket (101) in a penetrating way, the tenth rotating wheel (505) is fixedly arranged on the tenth rotating shaft (504), the fifth belt (503) is wound on the ninth rotating wheel (502) and the tenth rotating wheel (505), the second cam (506) is fixedly arranged on the tenth rotating shaft (504), one end of the third connecting rod (507) is slidably arranged on the first vertical bracket (101), the other end of the third connecting rod (507) is fixedly provided with the shifting lever (509), the second supporting plate (5071) is fixedly arranged on the first vertical bracket (101), two ends of a second spring (508) are respectively fixed on a third connecting rod (507) and a second support plate (5071), a feeding hopper (501) is fixedly arranged on the air duct (201), and a deflector rod (509) extends into an opening of the feeding hopper (501);

the ninth rotating shaft (2091) rotates to drive the ninth rotating wheel (502) to rotate, the ninth rotating wheel (502) transmits the rotation to the tenth rotating wheel (505) through the fifth belt (503), the tenth rotating wheel (505) drives the tenth rotating shaft (504) and the second cam (506) to rotate, the second cam (506) contacts with the third connecting rod (507) when rotating, the third connecting rod (507) can be lifted when the protruding part of the second cam (506) rotates upwards, the third connecting rod (507) slides upwards along the first vertical support (101), the third connecting rod (507) can press the second spring (508) when being lifted, and simultaneously drives the shifting lever (509) to be lifted, when the protruding part of the second cam (506) rotates downwards, the elastic force of the spring pushes the third connecting rod (507) downwards to drive the shifting lever (509) to move downwards, and therefore the shifting lever (509) can reciprocate upwards and downwards.

7. A wheat bran screening apparatus as claimed in claim 6, wherein: the device is characterized by further comprising a sliding plate (6), a third spring (601) and two fixing plates (602), wherein one end of the sliding plate (6) is fixed on the side face of the second screen (309), the other end of the sliding plate is connected with the discharging inclined plate (310) in a sliding mode, the two pairs of fixing plates (602) are provided, one pair of fixing plates (602) are fixedly arranged on one side, close to the discharging inclined plate (310), of the side face of the second screen (309), the other pair of fixing plates (602) are arranged on the outer walls of the two sides of the discharging inclined plate (310), and the third spring (601) is fixedly arranged between the fixing plate (602) on the discharging inclined plate (310) on the;

when the second screen (309) moves in a reciprocating manner, the sliding plate (6) is pushed to slide along a slide way in the discharging inclined plate (310), the direction of the slide way is consistent with the moving direction of the second screen (309), meanwhile, the second screen (309) drives the two fixing plates (602) on the sliding plate to move left and right, when the sliding plate moves left, the fixing plates (602) extrude the third spring (601), and when the sliding plate moves right, the fixing plates (602) gradually loosen the extrusion on the spring.

8. A wheat bran screening apparatus as claimed in claim 7, wherein: the screening box is characterized by further comprising a collecting box (7), wherein the collecting box (7) is arranged below the screening box (301) and is in sliding connection with the screening box (301), and a handle and four wheels are arranged on the collecting box (7);

the collecting box (7) is used for collecting fine dust screened by the second screening mechanism (3), and when the collecting box is full, the collecting box needs to be emptied, and the collecting box (7) is pulled out by pulling the handle.

9. A wheat bran screening apparatus as claimed in claim 8, wherein: the fan also comprises a ventilation opening (8), wherein the ventilation opening (8) is arranged on one side of the air duct (201) and is positioned outside the fan (209);

the ventilation opening (8) ensures the circulation of air.