CN115250754A

CN115250754A - Rice threshing device

Info

Publication number: CN115250754A
Application number: CN202211022634.8A
Authority: CN
Inventors: 乔保建; 任代胜; 王思哲; 杨家来
Original assignee: Anhui Yuanliang Seed Industry Research Institute; Yielead Rice Industry Co ltd
Current assignee: Anhui Yuanliang Seed Industry Research Institute; Yielead Rice Industry Co ltd
Priority date: 2022-08-25
Filing date: 2022-08-25
Publication date: 2022-11-01
Anticipated expiration: 2042-08-25
Also published as: CN115250754B

Abstract

The invention discloses a rice threshing device, which relates to the field of agricultural machinery and comprises a rack, an upper shell, a lower shell, a threshing roller, a cutting roller, a screening device and a driving device, wherein the upper shell and the lower shell are combined and fixedly connected on the rack, the threshing roller and the cutting roller are both rotatably connected in the upper shell and the lower shell, the bottom of the lower shell is provided with a bottom plate, and the screening device is arranged below the bottom plate; a cutting roller is additionally arranged, and a cutting knife staggered with the U-shaped ring is arranged on the cutting roller, so that the rice straw wound on the threshing roller can be cut into small sections, the threshing is convenient, and the rice straw is prevented from being wound on the threshing roller to influence the separation effect; the bottom of the lower shell is provided with the bottom plate which can move along with the screening frame to realize intermittent opening and closing, the amount of screening required in the screening frame each time can be controlled, the screening efficiency and accuracy are improved, and the condition of screen leakage is avoided; the rice threshing roller, the cutting roller and the screening frame are driven by the same motor, so that synchronous starting and stopping are conveniently realized.

Description

Rice threshing device

Technical Field

The invention relates to the field of agricultural machinery, in particular to a rice threshing device.

Background

The rice threshing is to separate rice grains from rice stalks, most of the existing threshing adopts a rice thresher to perform threshing treatment, the existing rice thresher directly sends the rice stalks into a rotary roller with teeth to perform impact threshing, partial rice stalks can be wound after the rotary roller is contacted, the threshing effect is influenced, partial stalks which are not completely threshed can be deposited at the bottom of the rice thresher or directly fall from a discharge port of the rice thresher, and the threshing is not complete.

In addition, part of the rice threshing machines have single function, the treated rice grains need to be matched with an independent screening machine for use, the screening amount of the screening machine is large at one time, the condition of screen leakage can occur, and the rice waste is caused.

Disclosure of Invention

The present invention is directed to a rice threshing apparatus to solve the above-mentioned problems.

A rice threshing device comprises a rack, an upper shell, a lower shell, a threshing roller, a cutting roller, a screening device and a driving device, wherein the upper shell and the lower shell are combined and fixedly connected to the rack;

the bottom plate is linked with the screening device to realize intermittent opening and closing, so that the materials are shaken onto the threshing roller and the cutting roller when the bottom plate is closed upwards, and the materials on the bottom plate are shaken onto the screening device when the bottom plate is opened upwards; thereby realizing the control of the sieving amount,

the driving device is used for driving the rice threshing roller and the cutting roller to rotate and driving the screening device to screen.

In this embodiment, a plurality of first U-shaped rings are arranged on the circumference of the rice threshing roller, a plurality of second U-shaped rings are arranged on the circumferential wall of the upper shell and the circumferential wall of the lower shell, the first U-shaped rings are arranged in a staggered manner with the second U-shaped rings, and a cutting knife is arranged on the cutting roller and is arranged between the two adjacent first U-shaped rings.

In this embodiment, the left side of epitheca is equipped with the feed inlet, the bottom of inferior valve is equipped with the discharge gate, discharge gate department is located to the bottom plate, and its one end is articulated with the inferior valve.

In this embodiment, screening plant is including the screening frame, the right-hand member opening on the upper portion of screening frame, three hornblocks of a plurality of bars of last bottom surface equidistance fixedly connected with of screening frame, the equidistance is equipped with a plurality of ladder teeth on three hornblock's the inclined plane, be equipped with between two adjacent three hornblocks with screening frame fixed connection's screen cloth, the bottom fixedly connected with of screening frame cover that gathers materials, the interior bottom of cover that gathers materials is the high inclined plane in the low right side in a left side, the minimum of the bottom of cover that gathers materials is equipped with the blanking mouth, each articulated a jib in four corners of screening frame, left the jib articulates with the inferior valve, and the right side the jib articulates with the frame.

In this embodiment, the left side wall fixedly connected with support piece of screening frame, support piece's top is rotated and is connected with the gyro wheel, the gyro wheel is located the below of bottom plate, and contacts with the bottom plate is tangent.

In this embodiment, the driving device includes a motor, a crankshaft, a support rod, a driving wheel, a first belt pulley, a second belt pulley and a third belt pulley, two eccentric shafts are arranged on the crankshaft, a push rod is connected to the eccentric shafts in a rotating manner, the other end of the push rod is connected with the support rod in a rotating manner, the support rod is fixedly connected with the screening frame, the motor is fixedly connected with the rack, the driving wheel is fixedly connected with an output shaft of the motor, the first belt pulley is fixedly connected with the crankshaft, the second belt pulley is fixedly connected with a rotating shaft of the rice threshing roller, the third belt pulley is fixedly connected with a rotating shaft of the cutting roller, the driving wheel is connected with the first belt pulley and the second belt pulley through belts, and the second belt pulley is connected with the third belt pulley through belts

The invention has the advantages that:

a cutting roller is additionally arranged, and a cutting knife staggered with the U-shaped ring is arranged on the cutting roller, so that the rice straw wound on the threshing roller can be cut into small sections, the threshing is convenient, and the rice straw is prevented from being wound on the threshing roller to influence the separation effect;

the bottom of the lower shell is provided with the bottom plate which can move along with the screening frame to realize intermittent opening and closing, the amount of screening required in the screening frame each time can be controlled, the screening efficiency and accuracy are improved, and the condition of screen leakage is avoided;

the drive of the threshing roller, the cutting roller and the screening frame adopts the same motor drive, synchronous start and stop can be realized, mutual cooperation work is convenient, and meanwhile, the cost is reduced.

Drawings

FIG. 1 is an isometric view of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is a schematic diagram of the construction of the screening device;

FIG. 4 is a schematic structural view of a crankshaft;

FIG. 5 is a schematic view of a triangular block;

fig. 6 is a top view of the upper shell hidden.

In the figure: 1. a frame; 2. an upper shell; 21. a feed inlet; 3. a lower case; 31. a discharge port; 4. a U-shaped ring II; 5. a rice threshing roller; 51. a first U-shaped ring; 6. a cutting roller; 61. a cutting knife;

7. a screening device; 71. screening the frame; 711. a support member; 712. a roller; 72. a triangular block; 721. step teeth; 73. screening a screen; 74. a material collecting cover; 75. a blanking port; 76. a boom;

8. a drive device; 81. a motor; 82. a crankshaft; 821. an eccentric shaft; 83. a support bar; 84. a drive wheel; 85. a first belt pulley; 86. a second belt pulley; 87. a third belt pulley; 88. a push rod; 9. a base plate.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained by combining the specific embodiments.

As shown in fig. 1 to 6, a rice threshing device comprises a frame 1, an upper shell 2, a lower shell 3, a threshing roller 5, a cutting roller 6, a screening device 7 and a driving device 8, wherein the upper shell 2 and the lower shell 3 are combined and fixedly connected on the frame 1, the threshing roller 5 and the cutting roller 6 are both rotatably connected in the upper shell 2 and the lower shell 3, the bottom of the lower shell 3 is provided with a bottom plate 9, and the screening device 7 is arranged below the bottom plate 9;

the bottom plate 9 and the screening device 7 are linked to realize clearance opening and closing, so that the materials shake to the threshing roller 5 and the cutting roller 6 when the bottom plate 9 is closed upwards, and the materials on the bottom plate 9 shake to the screening device 7 when the bottom plate 9 is opened upwards; thereby realize the volume of control screening, avoid piling up too much rice and stem stalk mixture on the filter screen for the condition of sieve is leaked to the rice appears.

The driving device 8 is used for driving the rice threshing roller 5 and the cutting roller 6 to rotate, and simultaneously driving the screening device 7 to screen.

In this embodiment, a plurality of U-shaped rings (51) are arranged on the circumference of the rice threshing roller (5), a plurality of U-shaped rings (4) are arranged on the circumferential wall of the upper shell (2) and the lower shell (3), the U-shaped rings (51) are arranged in a staggered way with the U-shaped rings (4) to avoid interference and facilitate impact on rice stalks, a cutting knife (61) is arranged on the cutting roller (6), and the cutting knife (61) is arranged between two adjacent U-shaped rings (51).

In this embodiment, the screening device 7 includes a screening frame 71, the right end of the upper portion of the screening frame 71 is open, and is used for discharging stalks, a plurality of strip-shaped triangular blocks 72 are fixedly connected to the upper bottom surface of the screening frame 71 at equal intervals, a plurality of step teeth 721 are arranged on the inclined surface of the triangular blocks 72 at equal intervals, a screen 73 fixedly connected with the screening frame 71 is arranged between two adjacent triangular blocks 72, an aggregate cover 74 is fixedly connected to the bottom of the screening frame 71, the aggregate cover 74 is used for gathering rice particles to the discharge hole 31, the inner bottom of the aggregate cover 74 is an inclined surface with a lower left and a higher right, a blanking port 75 is arranged at the lowest point of the bottom of the aggregate cover 74, four corners of the screening frame 71 are respectively hinged with a suspension rod 76, the suspension rod 76 at the left side is hinged with the lower casing 3, the suspension rod 76 at the right side is hinged with the rack 1, and the screening frame 71 can swing along the suspension rod 76.

In this embodiment, the driving device 8 includes a motor 81, a crankshaft 82, a support rod 83, a driving wheel 84, a first belt pulley 85, a second belt pulley 86 and a third belt pulley 87, two eccentric shafts 821 are provided on the crankshaft 82, a push rod 88 is rotatably connected to the eccentric shafts 821, the other end of the push rod 88 is rotatably connected to the support rod 83, the support rod 83 is fixedly connected to the sieving frame 71, the motor 81 is fixedly connected to the frame 1, the driving wheel 84 is fixedly connected to an output shaft of the motor 81, the first belt pulley 85 is fixedly connected to the crankshaft 82, the second belt pulley 86 is fixedly connected to a rotation shaft of the threshing roller 5, the third belt pulley 87 is fixedly connected to a rotation shaft of the cutting roller 6, the driving wheel 84 is connected to the first belt pulley 85 and the second belt pulley 86 through a belt, and the second belt pulley 86 is connected to the third belt pulley 87 through a belt.

In this embodiment, the left side of the upper casing 2 is provided with a feeding port 21, the bottom of the lower casing 3 is provided with a discharging port 31, the bottom plate 9 is provided at the discharging port 31, and one end of the bottom plate is hinged to the lower casing 3.

In this embodiment, a support 711 is fixedly connected to the left side wall of the screening frame 71, a roller 712 is rotatably connected to the top of the support 711, and the roller 712 is located below the bottom plate 9 and tangentially contacts the bottom plate 9.

The working process and the principle thereof are as follows:

rice enters from the feeding hole 21, the motor 81 is started to drive the driving wheel 84 to rotate anticlockwise, the driving wheel 84 is connected with the first belt pulley 85 and the second belt pulley 86 through belts, the second belt pulley 86 is connected with the third belt pulley 87 through belts, and therefore the first belt pulley 85, the second belt pulley 86 and the third belt pulley 87 rotate anticlockwise.

The first U-shaped ring 51 on the threshing roller 5 hits rice on the rice stalks, and meanwhile, the rice is rolled into the shell formed by the upper shell 2 and the lower shell 3, and the rice stalks can be impacted with the second U-shaped ring 4 on the upper shell 2 and the lower shell 3 in the rolling process of the rice, so that rice grains fall off.

The rotation directions of the threshing roller 5 and the cutting roller 6 are the same, so that in the tangential direction of the intersection of the threshing roller 5 and the cutting roller 6, the threshing roller 5 moves upwards, and the cutting roller 6 moves downwards, so that the cutting knife on the cutting roller 6 cuts the stalks wound on two adjacent U-shaped rings, and the stalks are prevented from being wound on the threshing roller 5 all the time.

The fallen rice grains and the cut stalks fall onto the baffle plate, the first belt pulley 85 rotates to drive the crankshaft 82 to rotate, so that the eccentric shaft 821 rotates around the rotation center of the crankshaft 82, the push rod 88 pushes the screening frame 71, and the screening frame 71 can swing back and forth within a certain angle range as the screening frame 71 is connected with the rack 1 and the lower shell 3 through the hanging rod 76.

The oscillating screening frame 71 enables the roller 712 to approach the lower casing 3 for a while, and the roller 712 supports the bottom plate 9, so that the bottom plate 9 can shake at the discharge port 31 to realize intermittent blanking, control the amount of rice and stalks in the screening frame 71, and avoid the condition of screen leakage caused by excessive drying amount at one time.

In addition, when the bottom plate 9 is far away from the discharge port 31, the rice grains and the stalks on the bottom plate 9 can fall into the screening frame 71, and when the bottom plate 9 is close to the discharge port 31, partial stalks which are not completely threshed can be shaken again and thrown onto the rice threshing roller 5 for threshing again.

The rice and the stalks which fall on the screening frame 71 swing along with the screening frame 71, when the screening frame 71 swings rightwards and upwards, partial stalks can be thrown onto the step teeth 721 of the next triangular block 72 to collide with the triangular block 72 in the screening frame 71, the step teeth 721 can further improve the separation effect, the existing stalks can be thrown to the area between the next two triangular blocks 72, and when the right-angled walls of the triangular blocks 72 can swing leftwards and downwards in the screening frame 71, the stalks are prevented from moving leftwards, and the circulation is repeated to form a movement track of the stalks all the way rightwards until the stalks are thrown out from the right end of the screening frame 71 and are unloaded.

The rice moved to the area of the screen mesh 73 falls into the aggregate cover 74 from the mesh and finally falls from the blanking port 75, thus realizing threshing.

It will be appreciated by those skilled in the art that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.

Claims

1. A rice threshing device is characterized by comprising a rack (1), an upper shell (2), a lower shell (3), a threshing roller (5), a cutting roller (6), a screening device (7) and a driving device (8), wherein the upper shell (2) and the lower shell (3) are combined and fixedly connected onto the rack (1), the threshing roller (5) and the cutting roller (6) are both rotatably connected into the upper shell (2) and the lower shell (3), a bottom plate (9) is arranged at the bottom of the lower shell (3), and the screening device (7) is arranged below the bottom plate (9);

the bottom plate (9) is linked with the screening device (7) to realize clearance opening and closing, so that the materials are shaken onto the threshing roller (5) and the cutting roller (6) when the bottom plate (9) is closed upwards, and the materials on the bottom plate (9) are shaken onto the screening device (7) when the bottom plate (9) is opened upwards; thereby realizing the control of the screening amount

The driving device (8) is used for driving the rice threshing roller (5) and the cutting roller (6) to rotate and driving the screening device (7) to screen.

2. A rice threshing apparatus according to claim 1, wherein the threshing roller (5) is provided with a plurality of U-shaped rings (51) on the circumference, the circumferential walls of the upper casing (2) and the lower casing (3) are provided with a plurality of U-shaped rings (4), the U-shaped rings (51) are arranged in a staggered manner with respect to the U-shaped rings (4), the cutting roller (6) is provided with a cutting knife (61), and the cutting knife (61) is arranged between two adjacent U-shaped rings (51).

3. A rice threshing apparatus according to claim 1, wherein the left side of the upper shell (2) is provided with a feeding hole (21), the bottom of the lower shell (3) is provided with a discharging hole (31), the bottom plate (9) is provided at the discharging hole (31), and one end of the bottom plate is hinged with the lower shell (3).

4. The rice threshing device according to claim 1, characterized in that the screening device (7) comprises a screening frame (71), the right end of the upper part of the screening frame (71) is open, a plurality of bar-shaped triangular blocks (72) are fixedly connected to the upper bottom surface of the screening frame (71) at equal intervals, a plurality of step teeth (721) are arranged on the inclined surface of each triangular block (72) at equal intervals, a screen (73) fixedly connected with the screening frame (71) is arranged between every two adjacent triangular blocks (72), a material collecting cover (74) is fixedly connected to the bottom of the screening frame (71), the inner bottom of the material collecting cover (74) is an inclined surface which is low on the left and high on the right, a blanking port (75) is arranged at the lowest point of the bottom of the material collecting cover (74), a suspender (76) is hinged to each of the four corners of the screening frame (71), the suspender (76) on the left side is hinged to the lower shell (3), and the suspender (76) on the right side is hinged to the frame (1).

5. A rice threshing apparatus as claimed in claim 4, wherein a support member (711) is fixedly connected to the left side wall of the screening frame (71), a roller (712) is rotatably connected to the top of the support member (711), and the roller (712) is located below the bottom plate (9) and in tangential contact with the bottom plate (9).

6. The rice threshing device according to claim 1, wherein the driving device (8) comprises a motor (81), a crankshaft (82), a support rod (83), a driving wheel (84), a first belt pulley (85), a second belt pulley (86) and a third belt pulley (87), two eccentric shafts (821) are arranged on the crankshaft (82), a push rod (88) is rotatably connected to the eccentric shafts (821), the other end of the push rod (88) is rotatably connected to the support rod (83), the support rod (83) is fixedly connected to the sieving frame (71), the motor (81) is fixedly connected to the frame (1), the driving wheel (84) is fixedly connected to an output shaft of the motor (81), the first belt pulley (85) is fixedly connected to the crankshaft (82), the second belt pulley (86) is fixedly connected to a rotating shaft of the rice threshing roller (5), the third belt pulley (87) is fixedly connected to a rotating shaft of the cutting roller (6), the driving wheel (84) is connected to the first belt pulley (85) and the second belt pulley (86) through a belt, and the second belt pulley (86) is connected to the third belt pulley (87) through a belt.