CN115250754B

CN115250754B - Rice threshing device

Info

Publication number: CN115250754B
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: 2023-06-20
Anticipated expiration: 2042-08-25
Also published as: CN115250754A

Abstract

The invention discloses a rice threshing device, which relates to the field of agricultural machinery and comprises a frame, an upper shell, a lower shell, a rice 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 frame, the rice threshing roller and the cutting roller are both rotationally connected to the upper shell and the lower shell, a bottom plate is arranged at the bottom of the lower shell, and the screening device is arranged below the bottom plate; the cutting roller is additionally arranged, and a cutting knife staggered with the U-shaped ring is arranged on the cutting roller, so that rice stalks wound on the threshing roller can be cut into small sections, threshing is convenient, and the influence of the winding of the rice stalks on the threshing roller on the separation effect is avoided; 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, so that the amount of screening in the screening frame each time can be controlled, the screening efficiency and accuracy are improved, and the condition of screening leakage is avoided; the rice threshing roller, the cutting roller and the screening frame are driven by the same motor, so that synchronous start and stop 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 threshing of rice is to separate rice grains from rice stems, the existing threshing is mostly carried out by adopting a rice thresher, the existing rice thresher is to directly send the rice stems into a rotating roller with teeth for impact threshing, part of the rice stems can be wound after being contacted by the rotating roller, the threshing effect is affected, part of the unhulled stems can be deposited at the bottom of the rice thresher or directly fall from a discharge hole of the rice thresher, and the incomplete threshing condition occurs.

In addition, part of the rice threshing machine is single in function, the treated rice grains need to be matched with an independent screening machine for use, the quantity of one-time screening of the screening machine is large, the condition of screening leakage can also occur, and the waste of rice is caused.

Disclosure of Invention

The invention aims to provide a rice threshing device which solves the problems in the prior art.

The utility model provides a rice threshing device, includes frame, upper housing, inferior valve, threshing roller, cut-off roller, screening plant and drive arrangement, upper housing and inferior valve merge fixed connection in the frame, threshing roller and cut-off roller all rotate to connect in upper housing and the inferior valve, the bottom of inferior valve is equipped with the bottom plate, screening plant locates the below of bottom plate;

the bottom plate and the screening device are linked to realize intermittent opening and closing, so that 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 amount of screening,

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 peripheral walls of the upper shell and the lower shell, the first U-shaped rings are arranged in a staggered manner with the second U-shaped rings, a cutting knife is arranged on the cutting roller, and the cutting knife is arranged between the adjacent two 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, the bottom plate is located discharge gate department, and its one end is articulated with inferior valve.

In this embodiment, screening plant includes the screening frame, the right-hand member opening on the upper portion of screening frame, the triangle piece 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 the inclined plane of triangle piece, be equipped with the screen cloth with screening frame fixed connection between two adjacent triangle pieces, the bottom fixedly connected with of screening frame gathers materials the cover, the interior bottom of gathering materials the cover is the inclined plane that left side is low right side high, the nadir of the bottom of gathering materials the cover is equipped with the blanking mouth, the four corners of screening frame respectively articulates there is a jib, and left side 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, the top of support piece rotates and is connected with the gyro wheel, the gyro wheel is located the below of bottom plate, and tangent contact with the bottom plate.

In this embodiment, drive arrangement includes motor, bent axle, bracing piece, drive wheel, belt pulley one, belt pulley two and belt pulley three, be equipped with two eccentric shafts on the bent axle, rotate on the eccentric shaft and be connected with the push rod the other end and the bracing piece rotation of push rod are connected, bracing piece and screening frame fixed connection, motor and frame fixed connection, the output shaft fixedly connected with drive wheel of motor, belt pulley one and bent axle fixed connection, belt pulley two and the pivot fixed connection of threshing roller, belt pulley three and the pivot fixed connection of cutting roller, the drive wheel passes through the belt connection with belt pulley one, belt pulley two passes through the belt connection with belt pulley three.

The invention has the advantages that:

the cutting roller is additionally arranged, and a cutting knife staggered with the U-shaped ring is arranged on the cutting roller, so that rice stalks wound on the threshing roller can be cut into small sections, threshing is convenient, and the influence of the winding of the rice stalks on the threshing roller on the separation effect is avoided;

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, so that the amount of screening in the screening frame each time can be controlled, the screening efficiency and accuracy are improved, and the condition of screening leakage is avoided;

the rice threshing roller, the cutting roller and the screening frame are driven by the same motor, so that synchronous start and stop can be realized, the rice threshing roller, the cutting roller and the screening frame are convenient to work in a matched mode, and meanwhile 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 view of a screening apparatus;

FIG. 4 is a schematic view of a crankshaft;

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

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

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

7. a screening device; 71. a screening frame; 711. a support; 712. a roller; 72. triangular blocks; 721. step teeth; 73. a screen; 74. a collection cover; 75. a blanking port; 76. a boom;

8. a driving device; 81. a motor; 82. a crankshaft; 821. an eccentric shaft; 83. a support rod; 84. a driving wheel; 85. a first belt pulley; 86. a belt pulley II; 87. a belt pulley III; 88. a push rod; 9. a bottom plate.

Detailed Description

The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.

As shown in fig. 1 to 6, a rice threshing device comprises a frame 1, an upper shell 2, a lower shell 3, a rice 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 to the frame 1, the rice threshing roller 5 and the cutting roller 6 are both rotatably connected to 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 and the screening device 7 are linked to realize intermittent opening and closing, so that materials on the bottom plate 9 are dithered 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 are dithered to the screening device 7 when the bottom plate 9 is opened upwards; thereby realizing the control of the screening amount, avoiding the situation that too much rice and stalk mixture are piled up on the filter screen and leading the rice to leak the screen.

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.

In this embodiment, a plurality of first U-shaped rings 51 are arranged on the circumference of the threshing roller 5, a plurality of second U-shaped rings 4,U are arranged on the circumferential walls of the upper shell 2 and the lower shell 3 so as to be staggered with the second U-shaped rings 4, interference is avoided, the threshing roller is convenient to strike rice stalks, a cutting knife 61 is arranged on the cutting roller 6, and the cutting knife 61 is arranged between the two adjacent first U-shaped rings 51.

In this embodiment, the screening device 7 includes screening frame 71, the right-hand member opening in the upper portion of screening frame 71, be used for discharging the stalk, the equidistant triangle piece 72 of a plurality of bars of fixedly connected with in the upper bottom surface of screening frame 71, equidistant a plurality of ladder teeth 721 of being equipped with on the inclined plane of triangle piece 72, be equipped with between two adjacent triangle pieces 72 with screening frame 71 fixedly connected with screen cloth 73, screening frame 71's bottom fixedly connected with gathers materials cover 74, gather materials cover 74 is used for gathering together the rice granule to discharge gate 31, the interior bottom of gathering materials cover 74 is the inclined plane of low side by side, the nadir of gathering materials cover 74's bottom is equipped with blanking mouth 75, the four corners of screening frame 71 articulates respectively has a jib 76, the jib 76 on the left side articulates with inferior valve 3, the jib 76 on the right side articulates with frame 1, screening frame 71 can follow jib 76 swing.

In this embodiment, the driving device 8 includes a motor 81, a crankshaft 82, a supporting rod 83, a driving wheel 84, a first pulley 85, a second pulley 86 and a third pulley 87, two eccentric shafts 821 are disposed 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 supporting rod 83, the supporting rod 83 is fixedly connected to the sieving frame 71, the motor 81 is fixedly connected to the frame 1, an output shaft of the motor 81 is fixedly connected to the driving wheel 84, the first pulley 85 is fixedly connected to the crankshaft 82, the second pulley 86 is fixedly connected to the rotating shaft of the threshing roller 5, the third pulley 87 is fixedly connected to the rotating shaft of the cutting roller 6, the driving wheel 84 is connected to the first pulley 85 and the second pulley 86 via a belt, and the second pulley 86 is connected to the third pulley 87 via a belt.

In this embodiment, the left side of the upper shell 2 is provided with a feed inlet 21, the bottom of the lower shell 3 is provided with a discharge outlet 31, the bottom plate 9 is arranged at the discharge outlet 31, and one end of the bottom plate is hinged with the lower shell 3.

In this embodiment, the left side wall of the screening frame 71 is fixedly connected with a support member 711, the top of the support member 711 is rotatably connected with a roller 712, 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 feed inlet 21, the motor 81 starts 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, and the second belt pulley 86 is connected with the third belt pulley 87 through belts, so that the first belt pulley 85, the second belt pulley 86 and the third belt pulley 87 rotate anticlockwise.

The U-shaped ring I51 on the threshing roller 5 hits rice on rice stalks, meanwhile, the rice is rolled into the shell formed by the upper shell 2 and the lower shell 3, and the rice stalks are impacted with the U-shaped rings II 4 on the upper shell 2 and the lower shell 3 in the rolling process, so that rice grains fall off.

The rice threshing roller 5 and the cutting roller 6 rotate in the same direction, so that the rice threshing roller 5 moves upwards and the cutting roller 6 moves downwards in the tangential direction of the junction of the rice threshing roller 5 and the cutting roller 6, so that the cutting knife on the cutting roller 6 cuts off the stalks wound on two adjacent U-shaped rings, and the stalks are prevented from being always wound on the rice threshing roller 5.

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, and the push rod 88 pushes the sieving frame 71, so that the sieving frame 71 can swing reciprocally within a certain angle range because the sieving frame 71 is connected with the frame 1 and the lower casing 3 through the hanging rod 76.

The swing screening frame 71 makes the gyro wheel 712 near the inferior valve 3 for a while keep away from inferior valve 3, and gyro wheel 712 has a supporting role to bottom plate 9 for bottom plate 9 also shakes at discharge gate 31, realizes intermittent type unloading, controls the quantity of rice and stalk in the screening frame 71, avoids once only to shine the excessive screen leakage condition that arouses of volume.

In addition, when the bottom plate 9 is far away from the discharge hole 31, rice grains and stems on the bottom plate 9 can fall into the screening frame 71, and when the bottom plate 9 is close to the discharge hole 31, part of the stems which are not completely threshed can be dithered again to the threshing roller 5 for threshing again.

The rice and the stalks falling on the screening frame 71 swing along with the screening frame 71, the right-angle walls of the triangular blocks 72 can throw part of the stalks onto the stepped teeth 721 of the next triangular block 72 when the screening frame 71 swings rightwards and upwards, the stepped teeth 721 impact the triangular blocks 72 in the screening frame 71, the separation effect can be further improved, some stalks are thrown into the area between the next two triangular blocks 72, and when the screening frame 71 swings leftwards and downwards, the right-angle walls of the triangular blocks 72 can prevent the stalks from moving leftwards and form a movement track of the stalks rightwards all the time by circulating until the stalks are thrown out from the right end of the screening frame 71.

The rice moving to the area of the screen 73 falls into the aggregate cover 74 from the mesh, and finally falls from the blanking port 75, thereby threshing is achieved.

It will be appreciated by those skilled in the art that the present invention can be carried out in other embodiments without departing from the spirit or essential characteristics thereof. Accordingly, the above disclosed embodiments are illustrative in all respects, and not exclusive. All changes that come within the scope of the invention or equivalents thereto are intended to be embraced therein.

Claims

1. The utility model provides a rice threshing device which is characterized in that, including frame (1), upper housing (2), inferior valve (3), rice threshing roller (5), cut-off roller (6), screening plant (7) and drive arrangement (8), upper housing (2) and inferior valve (3) merge fixed connection on frame (1), rice threshing roller (5) and cut-off roller (6) are all rotated and are connected in upper housing (2) and inferior valve (3), the bottom of inferior valve (3) is equipped with bottom plate (9), screening plant (7) are located the below of bottom plate (9);

the bottom plate (9) and the screening device (7) are linked to realize intermittent opening and closing, so that 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 simultaneously driving the screening device (7) to screen;

a plurality of U-shaped rings I (51) are arranged on the circumference of the threshing roller (5), a plurality of U-shaped rings II (4) are arranged on the peripheral walls of the upper shell (2) and the lower shell (3), the U-shaped rings I (51) are staggered with the U-shaped rings II (4), a cutting knife (61) is arranged on the cutting roller (6), and the cutting knife (61) is arranged between two adjacent U-shaped rings I (51);

the screening device (7) comprises a screening frame (71), the right end of the upper part of the screening frame (71) is provided with an opening, 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 surfaces 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 inner bottom of the aggregate cover (74) is an inclined surface with the left lower side and the right higher side, a blanking opening (75) is formed in the lowest point of the bottom of the aggregate cover (74), a hanging rod (76) is hinged to the lower shell (3) at four corners of the screening frame (71), and the hanging rod (76) at the left side is hinged to the frame (1);

the driving device (8) comprises a motor (81), a crankshaft (82), a supporting rod (83), a driving wheel (84), a belt pulley I (85), a belt pulley II (86) and a belt pulley III (87), wherein two eccentric shafts (821) are arranged on the crankshaft (82), a pushing rod (88) is rotationally connected to the eccentric shafts (821), the other end of the pushing rod (88) is rotationally connected with the supporting rod (83), the supporting rod (83) is fixedly connected with a screening frame (71), the motor (81) is fixedly connected with a frame (1), an output shaft of the motor (81) is fixedly connected with the driving wheel (84), the belt pulley I (85) is fixedly connected with the crankshaft (82), the belt pulley II (86) is fixedly connected with a rotating shaft of a threshing roller (5), the belt pulley III (87) is fixedly connected with a rotating shaft of a cutting roller (6), the driving wheel (84) is connected with the belt pulley I (85) and the belt pulley II (86) through a belt, and the belt pulley II (86) is connected with the belt pulley III (87) through a belt.

2. A rice threshing device according to claim 1, characterized in that the left side of the upper shell (2) is provided with a feed inlet (21), the bottom of the lower shell (3) is provided with a discharge outlet (31), the bottom plate (9) is arranged at the discharge outlet (31), and one end of the bottom plate is hinged with the lower shell (3).

3. A rice threshing device according to claim 1, characterized in that the left side wall of the screening frame (71) is fixedly connected with a support (711), the top of the support (711) is rotatably connected with a roller (712), and the roller (712) is positioned below the bottom plate (9) and is in tangential contact with the bottom plate (9).