Rice processing bran screening device

Abstract

The utility model relates to a rice processing chaff screening device which comprises a shell and a screening plate connected in the shell in a sliding mode, the top of the shell is fixedly connected with a conveying shell, the top of the conveying shell is fixedly connected with a feeding hopper, the bottom of the feeding hopper is fixedly connected with a motor, and the output end of the motor is in transmission connection with a rotating rod. A transmission part is arranged between the rotating rod and the sieve plate, the upper half part of the peripheral surface of the rotating rod is fixedly sleeved with a reciprocating lead screw, the peripheral surface of the reciprocating lead screw is in threaded connection with a screw plate, two guide rods are fixedly connected between the feeding hopper and the shell, and the guide rods penetrate through the screw plate in a sliding mode. The utility model relates to the technical field of rice processing. The motor intermittently drives the two sealing plates to rotate while driving the sieve plate to linearly vibrate, so that rice in the feeding hopper intermittently and quantitatively penetrates through the sealing plates to enter the shell, the rice is prevented from excessively falling onto the sieve plate, and the rice bran screening effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rice processing, in particular to a rice processing bran screening device. Background Art

[0002] Rice is a finished product made from paddy rice after processes such as cleaning, magnetic separation, rice husking, rice milling, and finished product finishing. The cleaning process is to use suitable equipment, appropriate process flow and proper operation methods. When paddy rice is rolled into rice, rice bran will be mixed in the rice. In order not to affect consumption, a bran screening device is needed to remove the rice bran from the rice.

[0003] Most of the current rice bran screening devices separate polished rice from rice bran through the linear vibration of an inclined vibrating screen, and the polished rice moves along the top surface of the vibrating screen and is discharged and collected. However, when adding rice, operators may add excessive rice to the bran screening device at one time, and a large amount of this rice falls to the top of the vibrating screen, and the vibrating screen cannot handle the excessive rice at one time, thus reducing the rice bran screening effect. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a rice bran screening device for processing rice, so as to solve the technical problems mentioned in the above background technology.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] A rice bran screening device comprises a shell and a screen plate slidably connected to the shell, a conveying shell is fixedly connected to the top of the shell, a feed hopper is fixedly connected to the top of the conveying shell, a motor is fixedly connected to the bottom of the feed hopper, a rotating rod is transmission-connected to the output end of the motor, and a transmission part is arranged between the rotating rod and the screen plate;

[0007] A reciprocating screw is fixedly sleeved on the upper half of the outer circumference of the rotating rod, and a screw plate is threadedly connected to the outer circumference of the reciprocating screw. Two guide rods are fixedly connected between the feed hopper and the shell, and the guide rods slide through the screw plate. A discharge assembly is arranged in the conveying shell.

[0008] The utility model can be further configured as follows in a preferred example: the discharge assembly includes two sealing plates, the two sealing plates are respectively hinged to the two opposite inner side walls of the conveying shell in the length direction, and the two side walls of the sealing plates in the width direction are both in contact with the inner wall of the conveying shell, a screw rod is rotatably connected inside the conveying shell, the outer peripheral surface of the screw rod is provided with two sections of threads with opposite rotation directions, and screw blocks are threadedly connected at the two sections of threads on the outer peripheral surface of the screw rod, a linkage rod is hinged between the screw block and the corresponding bottom surface of the sealing plate, and a linkage part is provided on the outer side of the conveying shell.

[0009] In a preferred example, the utility model can be further configured as follows: the linkage part includes a square rod fixedly connected to the bottom of the feed hopper, a sliding sleeve is provided with a spur rack on the lower half of the outer surface of the square rod, a spring is fixedly connected between the spur rack and the feed hopper, the screw rod portion extends to the outside of the conveying shell, and a gear is fixedly provided on the outer peripheral surface of the screw rod located outside the conveying shell, and the gear is meshed with the spur rack.

[0010] In a preferred example, the utility model can be further configured as follows: the transmission part includes a slide plate fixedly connected to one side of the screen plate, the slide plate slides through the inner wall of the shell and extends to the outside of the shell, and the rotating rod is transmission-connected to the slide plate through a crank-connecting rod mechanism.

[0011] In a preferred example, the utility model can be further configured as follows: an air pump and a connecting shell are fixedly connected to the top of the shell, the air pump supplies air to the connecting shell, a plurality of nozzles are fixedly penetrated at the bottom of the connecting shell, and the nozzles are fixedly extended through the top wall of the shell into the shell.

[0012] In a preferred example, the utility model can be further configured as follows: an air heater is fixedly connected to the top of the shell, the output end of the air pump is communicated with the air heater, and the output end of the air heater is communicated with the connecting shell.

[0013] In summary, the present invention includes at least one of the following beneficial technical effects:

[0014] 1. In the rice processing bran screening device, the motor drives the screen plate to vibrate linearly while intermittently driving the two sealing plates to rotate, so that the rice in the feed hopper intermittently passes through the sealing plate and enters the housing in a quantitative manner, thereby preventing excessive rice from falling onto the screen plate, thereby improving the rice bran screening effect;

[0015] 2. The rice processing bran screening device has an air pump and an air heater working to generate hot air that is blown toward the rice on the top of the sieve plate through a nozzle, which can force the rice bran to move downward through the sieve plate to improve the separation effect of rice and rice bran, and can also dry the rice with relatively wet surface to prevent the rice bran from sticking to the rice and being unable to be shaken off. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1is a three-dimensional diagram of a rice processing bran screening device of the present embodiment;

[0018] Figure 2 is a front cross-sectional view of a rice processing bran screening device of the present embodiment;

[0019] Figure 3 This embodiment Figure 2 The enlarged view of point A in the middle;

[0020] Figure 4 It is an internal view of a conveying shell in a rice processing bran screening device of this embodiment.

[0021] In the figure, 1, shell; 2, sieve plate; 3, conveying shell; 4, feed hopper; 5, motor; 6, rotating rod; 7, transmission part; 8, reciprocating screw; 9, screw plate; 10, guide rod; 11, discharge assembly; 111, sealing plate; 112, screw rod; 113, screw block; 114, linkage rod; 115, linkage part; 116, square rod; 117, spur rack; 118, spring; 119, gear; 12, air pump; 13, connecting shell; 14, nozzle; 15, air heater. DETAILED DESCRIPTION

[0022] The utility model is further described in detail below in conjunction with the accompanying drawings. Example

[0023] Reference Figures 1 to 4 The utility model discloses a rice processing bran screening device, comprising a housing 1 and a screen plate 2 slidably connected in the housing 1. A conveying shell 3 is fixedly connected to the top of the housing 1, and a feed hopper 4 is fixedly connected to the top of the conveying shell 3. A motor 5 is fixedly connected to the bottom of the feed hopper 4, and a rotating rod 6 is transmission-connected to the output end of the motor 5, and a transmission part 7 is provided between the rotating rod 6 and the screen plate 2.

[0024] A reciprocating screw 8 is fixedly sleeved on the upper half of the outer circumference of the rotating rod 6, and a screw plate 9 is threadedly connected to the outer circumference of the reciprocating screw 8. Two guide rods 10 are fixedly connected between the feed hopper 4 and the shell 1, and the guide rods 10 slide through the screw plate 9. A discharge assembly 11 is arranged in the conveying shell 3.

[0025] In this embodiment, the sieve plate 2 is arranged at a side away from the conveying shell 3 and tilted downward, and a plurality of sieve holes are provided on the top of the sieve plate 2. The rice bran will pass through the sieve holes and fall onto the inner bottom wall of the shell 1, and the polished rice will move along the top of the sieve plate 2 in a direction away from the conveying shell 3. Figure 2 As shown, polished rice and rice bran are discharged from the housing 1 according to different outlets, which is the prior art.

[0026] The top of the feed hopper 4 is open, and when adding rice, the operator adds a large amount of rice into the feed hopper 4 at one time. The top of the conveying shell 3 is communicated with the feed hopper 4, and the bottom of the conveying shell 3 is communicated with the housing 1.

[0027] When the motor 5 is working, it drives the rotating rod 6 to rotate, and the rotating rod 6 drives the sieve plate 2 to move linearly back and forth through the transmission part 7. Therefore, the rice on the top of the sieve plate 2 is vibrated, which enables the rice bran to fully pass through the sieve plate 2, and the rice moves along the top surface of the sieve plate 2 in a direction away from the conveying shell 3.

[0028] When the rotating rod 6 rotates, the reciprocating screw 8 is driven to rotate, and the reciprocating screw 8 drives the screw plate 9 to reciprocate.

[0029] In a further preferred embodiment of the present invention, Figure 3 As shown, the discharge assembly 11 includes two sealing plates 111 , which are respectively hinged to two opposite inner side walls of the conveying shell 3 in the length direction, and both side walls of the sealing plates 111 in the width direction are in contact with the inner wall of the conveying shell 3 .

[0030] A screw rod 112 is rotatably connected in the conveying shell 3, and the outer circumference of the screw rod 112 is provided with two sections of threads with opposite rotation directions, and the two sections of threads on the outer circumference of the screw rod 112 are threadedly connected with a screw block 113. A linkage rod 114 is hinged between the screw block 113 and the bottom surface of the corresponding sealing plate 111, and a linkage part 115 is provided on the outer side of the conveying shell 3.

[0031] In this embodiment, when the screw rod 112 rotates, it drives the two screw blocks 113 to move in opposite directions, the screw blocks 113 drive the linkage rod 114 to move, and the linkage rod 114 drives the sealing plate 111 to rotate, so that a gap is generated between the two sealing plates 111, and the rice can pass through the gap between the two sealing plates 111 and fall onto the top of the sieve plate 2.

[0032] In a further preferred embodiment of the present invention, Figure 3 As shown, the linkage part 115 includes a square rod 116 fixedly connected to the bottom of the feed hopper 4, and a spur rack 117 is slidably sleeved on the lower half of the outer surface of the square rod 116, and a spring 118 is fixedly connected between the spur rack 117 and the feed hopper 4. The screw rod 112 partially extends to the outside of the conveying shell 3, and a gear 119 is fixedly sleeved on the outer peripheral surface of the screw rod 112 located outside the conveying shell 3, and the gear 119 is meshed with the spur rack 117.

[0033] In this embodiment, when the spring 118 is in a natural state, the two sealing plates 111 fit together, and the rice in the feed hopper 4 cannot fall through the sealing plates 111. During the reciprocating motion of the screw plate 9, the screw plate 9 gradually approaches the spur rack 117 and pushes the spur rack 117 upward, the spring 118 is compressed, and then the end of the reciprocating screw 8 moves in the opposite direction when the screw plate 9 moves, and the spur rack 117 moves downward under the restoring force of the spring 118 until the screw plate 9 is separated from the spur rack 117, so that the spur rack 117 can intermittently reciprocate.

[0034] The movement of the spur rack 117 drives the gear 119 to rotate, the gear 119 drives the screw rod 112 to rotate, and the rotation of the screw rod 112 drives the two sealing plates 111 to rotate. Since the spur rack 117 reciprocates intermittently, the two sealing plates 111 can rotate intermittently, so the gap between the two sealing plates 111 is intermittently opened, and the rice falls on the top of the sieve plate 2 intermittently. The motor 5 works stably, the two sealing plates 111 rotate at the same angle in each cycle, and the time interval between each cycle is also the same, so the rice will fall on the top of the sieve plate 2 regularly and quantitatively, thereby preventing excessive rice from falling on the sieve plate 2, and improving the rice bran screening effect.

[0035] In a further preferred embodiment of the present invention, Figure 2 As shown, the transmission part 7 includes a slide plate fixedly connected to one side of the screen plate 2, the slide plate slides through the inner wall of the shell 1 and extends to the outside of the shell 1, and the rotating rod 6 is transmission-connected to the slide plate through a crank-connecting rod mechanism.

[0036] In this embodiment, when the rotating rod 6 rotates, it drives the slide plate and the sieve plate 2 to move linearly through the crank-connecting rod mechanism, so that the rice bran fully passes through the sieve plate 2, and the rice moves along the top surface of the sieve plate 2 towards the direction away from the conveying shell 3.

[0037] In a further preferred embodiment of the present invention, Figure 2 As shown, an air pump 12 and a connecting shell 13 are fixedly connected to the top of the shell 1. The air pump 12 supplies air to the connecting shell 13. A plurality of nozzles 14 are fixedly penetrated at the bottom of the connecting shell 13. The nozzles 14 are fixedly passed through the top wall of the shell 1 and extend into the shell 1.

[0038] In this embodiment, the air pump 12 works to inject air into the connecting shell 13, and the airflow is sprayed toward the rice on the top of the sieve plate 2 through the nozzle 14, forcing the rice bran to move downward through the sieve plate 2, thereby improving the bran screening effect.

[0039] In a further preferred embodiment of the present invention, Figure 2 As shown, an air heater 15 is fixedly connected to the top of the shell 1 , the output end of the air pump 12 is communicated with the air heater 15 , and the output end of the air heater 15 is communicated with the connecting shell 13 .

[0040] In this embodiment, the gas discharged from the air pump 12 is heated by the air heater 15 and then sprayed toward the rice, which can dry some relatively moist rice. While increasing the storage time of the rice, it also allows the rice bran adhering to the surface of the moist rice to fall off when vibrated, further improving the bran screening effect.

[0041] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A rice bran screening device, comprising a housing (1) and a screen plate (2) slidably connected to the housing (1), a conveying housing (3) fixedly connected to the top of the housing (1), and a feed hopper (4) fixedly connected to the top of the conveying housing (3), characterized in that: A motor (5) is fixedly connected to the bottom of the feed hopper (4); an output end of the motor (5) is drivingly connected to a rotating rod (6); a transmission part (7) is provided between the rotating rod (6) and the sieve plate (2); A reciprocating screw (8) is fixedly sleeved on the upper half of the outer circumference of the rotating rod (6), and a screw plate (9) is threadedly connected to the outer circumference of the reciprocating screw (8). Two guide rods (10) are fixedly connected between the feed hopper (4) and the shell (1), and the guide rods (10) slide through the screw plate (9). A discharge assembly (11) is arranged in the conveying shell (3).

2. A rice processing bran screening device according to claim 1, characterized in that: The discharge assembly (11) comprises two sealing plates (111), the two sealing plates (111) are respectively hinged to two opposite inner side walls of the conveying shell (3) in the length direction, and the two side walls of the sealing plates (111) in the width direction are both in contact with the inner wall of the conveying shell (3), a screw rod (112) is rotatably connected inside the conveying shell (3), the outer peripheral surface of the screw rod (112) is provided with two sections of threads with opposite rotation directions, and screw blocks (113) are threadedly connected at the two sections of the threads on the outer peripheral surface of the screw rod (112), a linkage rod (114) is hinged between the screw block (113) and the bottom surface of the corresponding sealing plate (111), and a linkage portion (115) is provided on the outer side of the conveying shell (3).

3. A rice processing bran screening device according to claim 2, characterized in that: The linkage part (115) comprises a square rod (116) fixedly connected to the bottom of the feed hopper (4); a spur rack (117) is provided on the lower half of the outer surface of the square rod (116); a spring (118) is fixedly connected between the spur rack (117) and the feed hopper (4); the screw rod (112) partially extends to the outside of the conveying shell (3); and a gear (119) is fixedly provided on the outer peripheral surface of the screw rod (112) located outside the conveying shell (3); and the gear (119) is meshed with the spur rack (117).

4. A rice processing bran screening device according to claim 1, characterized in that: The transmission part (7) comprises a slide plate fixedly connected to one side of the screen plate (2), the slide plate slides through the inner wall of the shell (1) and extends to the outside of the shell (1), and the rotating rod (6) is transmission-connected to the slide plate via a crank-connecting rod mechanism.

5. A rice processing bran screening device according to claim 1, characterized in that: An air pump (12) and a connecting shell (13) are fixedly connected to the top of the shell (1), the air pump (12) supplies air to the connecting shell (13), and a plurality of nozzles (14) are fixedly provided on the bottom of the connecting shell (13), the nozzles (14) are fixedly passed through the top wall of the shell (1) and extend into the shell (1).

6. A rice processing bran screening device according to claim 5, characterized in that: An air heater (15) is fixedly connected to the top of the shell (1), an output end of the air pump (12) is in communication with the air heater (15), and an output end of the air heater (15) is in communication with the connecting shell (13).

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