Rotary screen device for cyperus esculentus

Abstract

The utility model discloses a rotary screen device for cyperus esculentus, which belongs to the technical field of agricultural machinery and comprises a cylindrical screen drum. Oblong screen holes are densely distributed in the side wall of the screen drum; the rotating assembly is arranged in the screen drum, the axis of the rotating assembly and the axis of the screen drum are located in the same vertical plane, and the rotating assembly deviates downwards. The rotating assembly comprises a mandrel assembly; a plurality of pairs of arc-shaped grass guide plates are fixedly connected to the mandrel assembly and are uniformly distributed at intervals in the axial direction; a plurality of flexible throwing ropes are arranged between two adjacent pairs of arc-shaped grass guide plates and are uniformly distributed around the circumference of the mandrel assembly; one end of each flexible throwing rope is rotatably connected with the mandrel assembly, and the other end of each flexible throwing rope is provided with a Y-shaped forked part; and one end of the mandrel assembly extends out of the screen drum and is connected with a driving device. According to the cyperus esculentus harvester, the flexible throwing rope with the Y-shaped forking part is arranged, the effect of separating cyperus esculentus from stalks is improved, the screen drum is not prone to being blocked, and the cyperus esculentus harvesting efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of agricultural machinery technology relates to a cyperus esculentus drum sieve device. BACKGROUND

[0002] The separation technology of cyperus esculentus stem in the mechanized harvesting process faces some challenges. At present, the domestic developed cyperus esculentus harvester generally has the problem of high failure rate, the main reason is that the separation effect of cyperus esculentus stem is not good. The cyperus esculentus harvester digs up the soil and breaks the link of cyperus esculentus and root, and then transmits the soil and beans to the screening device for separation. However, due to the small and many tubers of cyperus esculentus, the large soil humidity, the complex weed root system and other factors, the separation of stem is difficult, which leads to high failure rate of the harvester and affects the harvesting progress. In order to solve these problems, researchers in this field are exploring to improve the design of cyperus esculentus harvester to improve its stability and separation efficiency. Such as the patent "cyperus esculentus fruit separation device" with announcement number CN 208727953 U, the flexible grass cleaning plate is set, which aims to prevent the grass stem in cyperus esculentus from blocking the long hole on the inner wall of the screen cylinder, that is, to overcome the problem of screen hole blockage, the separation effect of stem is insufficient. CONTENT OF THE UTILITY MODEL

[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art, provide a cyperus esculentus drum sieve device, which aims to design a drum sieve, efficiently separate the fruit beans and stems of cyperus esculentus, and prevent blockage, thereby improving the harvesting efficiency of cyperus esculentus.

[0004] In order to achieve the above purpose, the utility model provides the following technical scheme: a cyperus esculentus drum sieve device, which comprises a cylindrical screen cylinder; the screen cylinder side wall is densely covered with long circular screen holes; a rotating assembly is arranged inside the screen cylinder, the shaft center of the rotating assembly and the shaft center of the screen cylinder are located in the same vertical plane, and the rotating assembly is downwardly offset; the rotating assembly comprises a core shaft assembly; a plurality of pairs of arc-shaped grass guide plates are fixedly connected to the core shaft assembly and are uniformly distributed in the axial direction; each pair of arc-shaped grass guide plates is symmetrically distributed with the core shaft assembly as the center, the gap between the circumferential contour line of each pair of arc-shaped grass guide plates and the inner wall of the lower end of the screen cylinder is less than the diameter of the fruit beans of cyperus esculentus; each pair of arc-shaped grass guide plates is in a spiral shape, which is used to push the mixture of beans and soil in the screen cylinder to move to one end of the screen cylinder when the rotating assembly rotates; a plurality of flexible flails are arranged between two adjacent pairs of arc-shaped grass guide plates and are uniformly distributed around the core shaft assembly, the circumferential contour line radius of the flexible flails is greater than the gap between the shaft center of the core shaft assembly and the inner wall of the lower end of the screen cylinder; one end of each flexible flail is rotatably connected to the core shaft assembly, and the other end is provided with a Y-shaped bifurcated part; one end of the core shaft assembly protrudes out of the screen cylinder and is connected with a driving device, which is used to drive the core shaft assembly to rotate.

[0005] As a further optimization, the core shaft assembly comprises a core shaft, a plurality of radial rods are fixed on the core shaft and are axially spaced and evenly distributed, the radial rods on the same cross section of the core shaft are circumferentially evenly distributed, and the end of each radial rod is fixed with a longitudinal rod for fixing the plurality of longitudinal rods evenly distributed around the circumference of the core shaft with the core shaft; the arc-shaped grass guide plate is fixed on the longitudinal rod for fixing the arc-shaped grass guide plate on the core shaft assembly; one end of the flexible flail is sleeved on the longitudinal rod for rotatably connecting one end of the flexible flail with the core shaft assembly.

[0006] As a further optimization, the flexible flail is made of rubber.

[0007] As a further optimization, a plurality of grass cleaning knives are installed at one end of the core shaft assembly and are circumferentially evenly distributed around the core shaft assembly.

[0008] As a further optimization, each grass cleaning knife is in an inclined and curved shape for generating air flow flowing outward of the screen cylinder when the plurality of grass cleaning knives rotate.

[0009] As a further optimization, the length direction of the long-circular screen hole is arranged perpendicular to the axis of the screen cylinder.

[0010] Compared with the prior art, the beneficial effects of the present application are that the flexible flail with the Y-shaped bifurcated part is provided, the separation effect of oil bean and stems is improved, the screen cylinder is not easy to be blocked, and the harvesting efficiency of oil bean is improved. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 It is a plane structure schematic view of the end part of the screen cylinder of the embodiment of the present application.

[0012] Fig. 2 It is a three-dimensional structure schematic view of the end part of the screen cylinder of the embodiment of the present application.

[0013] The correspondence between the technical features in the figure and the reference signs is as follows: screen cylinder 1; screen hole 11; rotating assembly 2; core shaft 21; radial rod 22; longitudinal rod 23; arc-shaped grass guide plate 24; flexible flail 25; grass cleaning knife 26; driving device 3. DETAILED DESCRIPTION

[0014] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments.

[0015] Embodiment, please refer to Figs. 1-2The utility model provides a cyperus esculentus drum sieve device, including sieve cylinder 1, sieve cylinder 1 is densely covered long circular sieve hole 11, rotating assembly 2 is arranged in the inside of sieve cylinder 1, and its axle center is located in the same vertical plane with the axle center of sieve cylinder 1, and is eccentric downward, rotating assembly 2 includes core shaft subassembly, multiple pairs of arc grass guide plate 24 are fixedly connected on core shaft subassembly, and axial interval is uniformly distributed, every pair of arc grass guide plate 24 is symmetrically distributed with core shaft subassembly as the center, and the clearance between its circumferential contour line and the lower end inner wall of sieve cylinder 1 is less than the fruit bean diameter of cyperus esculentus, every pair of arc grass guide plate 24 is helical, for when rotating assembly 2 rotates, push the bean soil mixture in sieve cylinder 1 to move to one end of sieve cylinder 1.

[0016] When using, bean soil mixture enters the inside of sieve cylinder 1 from one end of sieve cylinder 1, when rotating assembly 2 rotates, arc grass guide plate 24 constantly turns over material and gradually pushes to the outlet end of sieve cylinder 1, so that material generates the power of axial movement.This time, most of the material will concentrate in the bottom of sieve cylinder 1, rotating assembly 2 is eccentric downward, improves the effect of turning over and pushing.Meanwhile, cyperus esculentus falls from sieve hole 11 in the bottom of sieve cylinder 1, and the stem is separated from cyperus esculentus under the pulling action of arc grass guide plate 24.The material between the adjacent two pairs of arc grass guide plate 24 is hit by flexible flail 25, and the impact force is used to hit the material, the first aspect can promote the stem and bean fruit to separate, the second aspect drives the material between the two pairs of arc grass guide plate 24 to scatter, through the different densities of bean fruit and stem, the bean fruit falls fast, and the stem falls slow, promotes the separation of bean stem, the third aspect promotes the material to scatter and fall into the working range of arc grass guide plate 24, continues axial movement, the fourth aspect, since the circumferential contour line radius of flexible flail 25 is greater than the clearance between the axle center of core shaft subassembly and the lower end inner wall of sieve cylinder 1, the side wall of sieve cylinder 1 can be hit to produce vibration, and the cylinder wall is scraped, reduces the material blockage of sieve hole 11.Under the constant turning over and pushing effect of the material in sieve cylinder 1, finally the stem is discharged from the end of sieve cylinder 1, and the bean fruit falls from sieve hole 11, and the effect of bean stem separation is achieved.

[0017] The length direction of the long-circular-shaped screen hole 11 is perpendicular to the axis of the screen cylinder 1, and at this time, the length direction of the screen hole 11 is the same as the rotating direction of the rotating assembly 2, which on the one hand increases the probability of the bean fruit passing through the screen hole 11, and on the other hand is also beneficial to the pulling of the stems by the arc-shaped grass guide plate 24, and improves the separation effect.

[0018] Preferably, the flexible flail 25 is made of rubber, which on the one hand has sufficient impact force, and on the other hand has good elasticity and long service life.

[0019] The core shaft assembly comprises a core shaft 21, a plurality of radial rods 22 are fixedly connected to the core shaft 21 and are uniformly distributed in the axial direction; the radial rods 22 located on the same transverse section of the core shaft 21 are uniformly distributed in the circumferential direction, and the ends of each radial rod 22 are fixedly connected with a longitudinal rod 23, which is used to fix the plurality of longitudinal rods 23 uniformly distributed in the circumferential direction of the core shaft 21 and the core shaft 21 into one body; the arc-shaped grass guide plate 24 is fixedly connected to the longitudinal rod 23, which is used to fix the arc-shaped grass guide plate 24 to the core shaft assembly; one end of the flexible flail 25 is sleeved on the longitudinal rod 23, which is used to rotatably connect one end of the flexible flail 25 with the core shaft assembly. It can be seen that the longitudinal rod 23 is the installation basis of the arc-shaped grass guide plate 24 and the flexible flail 25, and the radial rod 22 plays a role in connecting the longitudinal rod 23 and the core shaft 21; in addition, the longitudinal rod 23 has a large turning radius and is close to the side wall of the screen cylinder 1, which increases the effect of material turning.

[0020] In order to avoid the blockage of the screen cylinder 1 by the stems, a plurality of grass removing knives 26 are installed at one end of the core shaft assembly and are uniformly distributed in the circumferential direction of the core shaft assembly. Preferably, the grass removing knives 26 are installed at the outlet end of the screen cylinder 1, and the stems accumulated at the outlet end are more easily crushed by the rotation of the grass removing knives 26 and are more easily discharged.

[0021] More preferably, each grass removing knife 26 is in the shape of an inclined curve, which is used to generate an airflow flowing out of the screen cylinder 1 when the plurality of grass removing knives 26 rotate. At this time, the plurality of grass removing knives 26 can also form a fan blade to extract air in the screen cylinder 1 and use the airflow to accelerate the discharge of the stems.

[0022] The embodiment has the advantages that the flexible flail 25 with the Y-shaped bifurcated part is provided, the separation effect of the cyperus iria and the stems is improved, the screen cylinder 1 is not easy to be blocked, and the harvesting efficiency of the cyperus iria is improved.

[0023] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A Cyperus esculentus drum sieve apparatus comprising a cylindrical sieve drum (1); characterized in that: The screen cylinder (1) is densely covered with long-circular screen holes (11); a rotating assembly (2) is arranged inside the screen cylinder (1), the axis of which is located in the same vertical plane as the axis of the screen cylinder (1) and is offset downward; the rotating assembly (2) comprises a mandrel assembly; a plurality of pairs of arc-shaped grass guide plates (24) are fixedly connected to the mandrel assembly and are uniformly distributed in axial direction; each pair of the arc-shaped grass guide plates (24) is symmetrically distributed with the mandrel assembly as the center, and the gap between the circumferential contour line of each pair of the arc-shaped grass guide plates (24) and the inner wall of the lower part of the screen cylinder (1) is less than the diameter of the fruit beans of the oilseed grass pea; each pair of the arc-shaped grass guide plates (24) is in a spiral shape; a plurality of flexible flails (25) are arranged between two adjacent pairs of the arc-shaped grass guide plates (24) and are uniformly distributed around the circumference of the mandrel assembly, and the circumferential contour line radius of the flexible flails (25) is greater than the gap between the axis of the mandrel assembly and the inner wall of the lower end of the screen cylinder (1); one end of each of the flexible flails (25) is rotatably connected to the mandrel assembly, and the other end is provided with a Y-shaped bifurcated part; one end of the mandrel assembly protrudes out of the screen cylinder (1) and is connected to a driving device (3).

2. A Cyperus esculentus drum sieve apparatus as claimed in claim 1, wherein: The mandrel assembly comprises a mandrel (21), a plurality of radial rods (22) are fixedly connected to the mandrel (21) and are uniformly distributed in axial direction; a plurality of radial rods (22) located on the same transverse section of the mandrel (21) are uniformly distributed in circumferential direction, and the end of each radial rod (22) is fixedly connected to a longitudinal rod (23) for integrating a plurality of longitudinal rods (23) around the mandrel (21) with the mandrel (21); the arc-shaped grass guide plates (24) are fixedly connected to the longitudinal rods (23) for fixing the arc-shaped grass guide plates (24) to the mandrel assembly; one end of the flexible flails (25) is sleeved on the longitudinal rods (23) for rotatably connecting one end of the flexible flails (25) to the mandrel assembly.

3. A Cyperus esculentus drum sieve apparatus as claimed in claim 2, wherein: The material of the flexible flails (25) is rubber.

4. A Cyperus esculentus drum sieve apparatus as claimed in claim 1, wherein: A plurality of grass cleaning knives (26) are installed on one end of the mandrel assembly and are uniformly distributed in circumferential direction around the mandrel assembly.

5. A Cyperus esculentus drum sieve apparatus as claimed in claim 4, wherein: Each of the grass cleaning knives (26) is in an inclined and curved shape for generating airflow flowing outward from the screen cylinder (1) when the plurality of grass cleaning knives (26) rotate.

6. A cyperus drum screening apparatus as claimed in claim 1, wherein: The length direction of the long-circular screen holes (11) is perpendicular to the axis of the screen cylinder (1).

Images