Sorting device of rice and wheat threshing machine
By designing an open sorting device, and utilizing guide bars and a widened vibrating screen assembly, the problem of incomplete separation of grains and straw in existing rice and wheat threshers has been solved. This has enabled efficient utilization of the threshing drum and increased sorting speed, while reducing equipment failure rate and manufacturing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-24
- Publication Date
- 2026-03-24
AI Technical Summary
The existing rice and wheat threshers have sorting devices that occupy the space of the threshing drum, resulting in low utilization of the threshing drum, slow sorting speed, incomplete sorting, high loss rate, and high failure rate.
An open-type sorting device is adopted. Through the cooperation of guide bars and a widened vibrating screen assembly, the guide bars guide the weeds into the vibrating screen assembly. There is no connection between the screen bars. Combined with the screen and the fan, the grain and straw are completely separated. The guide bars of the cover plate are arranged in an open manner, which increases the utilization rate of the threshing drum.
It improved the utilization rate and sorting speed of the threshing drum, increased the number of people feeding and threshing, reduced the equipment failure rate, improved sorting accuracy, and reduced manufacturing costs.
Smart Images
Figure CN224022388U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a rice and wheat threshing machine sorting device and belongs to the technical field of semi-feeding type wheat threshing machines. BACKGROUND
[0002] The existing sorting type rice and wheat threshing machine occupies 20% (about 15 cm wide) of the position of the threshing cylinder in the sorting process, thereby reducing the utilization rate of the threshing cylinder, and originally three people can simultaneously feed and thresh together, but often only two people can feed and thresh, thereby reducing the threshing speed. SUMMARY
[0003] The utility model mainly solves the technical problem to provide a rice and wheat threshing machine sorting device, which can separate the grain and the straw more completely, improve the utilization rate of the threshing cylinder, and improve the threshing speed.
[0004] To solve the above technical problems, the utility model adopts the technical scheme of providing a rice and wheat threshing machine sorting device, which comprises a rack, a threshing cylinder and a first motor for driving the threshing cylinder to rotate are horizontally arranged on the rack, a screen is arranged below the threshing cylinder, a grain bucket is arranged below the screen, a conveying spiral shaft and a fan are arranged at the bottom of the grain bucket, a second motor for driving the conveying spiral shaft to rotate is arranged on the rack, a lifting machine for lifting and removing the grain at the conveying spiral shaft is arranged on the outer side of one end of the conveying spiral shaft, a plurality of guide bars are arranged above the threshing cylinder, a vibrating screen assembly is arranged at the rear end of the rack, and one end of the plurality of guide bars is close to the vibrating screen assembly.
[0005] Preferably, the conveying spiral shaft is parallel to the threshing cylinder.
[0006] Preferably, the plurality of guide bars are horizontally and parallel arranged.
[0007] Preferably, the vibrating screen assembly comprises a plurality of screen bars, and the plurality of screen bars are independent of each other.
[0008] Preferably, a front cover plate of the cylinder is arranged at the front end of the rack, the front cover plate of the cylinder is located above the front of the threshing cylinder, and the other end of the plurality of guide bars is fixedly connected with the front cover plate of the cylinder.
[0009] Preferably, a straw outlet is arranged at the rear of the grain bucket.
[0010] Preferably, a shed cover is arranged at the top of the rack.
[0011] Preferably, the width of the shaker assembly is greater than 15 cm.
[0012] The rice and wheat thresher sorting device of the utility model has the advantages that the guiding strip and the widened sieve plate, i.e. the shaker assembly, are matched, the guiding strip guides weeds into the shaker assembly, the sieve strips in the shaker assembly are not connected with each other, the separation of the straw and the grain is more thorough, the open-type separation device is formed, the utilization rate of the threshing cylinder can be greatly improved, three people can simultaneously feed and thresh the grain, and the utilization rate of the threshing cylinder is increased and the threshing speed is improved. BRIEF DESCRIPTION OF DRAWINGS
[0013] In order to more clearly illustrate the technical solutions in the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, obviously, the drawings in the following description are only some embodiments of the utility model, and for the ordinary skilled in the art, other drawings can be obtained according to these drawings without creative labor, wherein:
[0014] Fig. 1 And Fig. 2 The drawings are structural schematic diagrams of the rice and wheat thresher sorting device in different view directions. DETAILED DESCRIPTION
[0015] The technical solutions in the embodiments of the utility model will be clearly and completely described below, obviously, the described embodiments are only some embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.
[0016] Please refer to Figs. 1-2 The utility model embodiment includes: a rice and wheat thresher sorting device, which comprises a rack 1, a threshing cylinder 2 and a first motor 3 for driving the threshing cylinder 2 to rotate are horizontally arranged on the rack 1, a screen 4 is arranged below the threshing cylinder 2, a grain bucket 5 is arranged below the screen 4, a conveying spiral shaft 6 and a fan 7 are arranged at the bottom in the grain bucket 5, a second motor (not marked in the drawing) for driving the conveying spiral shaft 6 to rotate is arranged on the rack 1, a hoist 8 for lifting and removing the grain at the conveying spiral shaft 6 is arranged at the outer side of one end of the conveying spiral shaft 6, a plurality of guiding strips 9 are arranged above the threshing cylinder 2, a shaker assembly 10 is arranged at the rear end of the rack 1, and one end of the plurality of guiding strips 9 is close to the shaker assembly 10.
[0017] Preferably, the conveying spiral shaft 6 is parallel to the threshing cylinder 2.
[0018] Preferably, the plurality of guide bars 9 are arranged horizontally and in parallel.
[0019] Preferably, the vibration screen assembly 10 comprises a plurality of screen bars 11, which are independent of each other, and there is no connection between screen bars 11.
[0020] Preferably, the front end of the frame 1 is provided with a roller front cover plate 12, which is located above the front of the threshing cylinder 2, and the other end of the plurality of guide bars 9 is fixedly connected with the roller front cover plate 12.
[0021] Preferably, the grain bucket 5 is provided with a grass outlet 13 behind the grain bucket 5.
[0022] Preferably, the top of the frame 1 is provided with a shed cover 14.
[0023] Preferably, the width of the vibration screen assembly 10 is greater than 15 cm.
[0024] The rice and wheat threshing machine sorting device in the utility model works, the first motor 3 drives the threshing cylinder 2 to rotate, the operator holds the root of rice and wheat grains, puts the ear end into the rotating threshing cylinder 2 to thresh, the shed cover 14 blocks the grains from splashing around, the roller front cover plate 12 blocks the grains brought by the rotation of the threshing cylinder 2 to fall on the screen 4, the threshed grains and chaff fall on the screen 4, under the repeated operation of the threshing cylinder 2 (the threshing cylinder 2 is provided with the arranged spiral-shaped barb 15), most of the grains fall through the screen 4 and are selected by the fan 7 to fall on the conveying spiral shaft 6, the rotating conveying spiral shaft 6 conveys the grains to the elevator 8, the elevator 8 lifts the clean grains to the bagging opening (not indicated in the figure) to bag. A small part of the grains and chaff will come to one end of the threshing cylinder 2 close to the guide bar 9 under the action of the barb 15, under the action of the sorting guide bar 9, the grains and chaff rotate several times, which can thresh the rice ear clean without affecting the grains falling through the screen 4, the sorting guide bar 9 guides the chaff to the inlet of the vibration screen assembly 10, and the grains are separated again by the vibration screen sorting mode of the vibration screen assembly 10 and fall on the screen 4, and then fall into the grain bucket 5, the grain bucket 5 is used to collect the grains sorted for several times.
[0025] The utility model adopts the open sorting device, only needs to widen the vibration screen assembly 10 to 18 cm, there is no connection between the screen bars 11 of the vibration screen assembly 10 (the original screen plate is below 15 cm, and there is a connection between the screen bars, which leads to the unclean separation of grains and chaff), and the original cover plate is changed into a row of open guide bars arranged above one end of the threshing cylinder 2, which can maximize the utilization rate of the threshing cylinder, thereby improving the threshing speed, improving the sorting precision, reducing the manufacturing cost, reducing the equipment failure rate, and prolonging the service life of the equipment.
[0026] The above merely illustrates the embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, are all included in the patent protection scope of the present application.
Claims
1. A rice and wheat threshing and sorting device, comprising a frame, wherein a threshing drum and a first motor for driving the threshing drum to rotate are horizontally arranged on the frame, characterized in that, A screen is installed below the threshing drum, and a grain bin is installed below the screen. A conveying screw shaft and a fan are installed at the bottom of the grain bin. A second motor for driving the conveying screw shaft to rotate is installed on the frame. An elevator for lifting and removing the grain at the conveying screw shaft is installed on the outer side of one end of the conveying screw shaft. Multiple guide bars are installed above the threshing drum. A vibrating screen assembly is installed at the rear end of the frame. One end of the multiple guide bars is close to the vibrating screen assembly.
2. The rice and wheat threshing and sorting device according to claim 1, characterized in that, The conveying screw shaft is parallel to the threshing drum.
3. The rice and wheat threshing and sorting device according to claim 2, characterized in that, The multiple guide strips are arranged horizontally and parallel.
4. The rice and wheat threshing and sorting device according to claim 3, characterized in that, The vibrating screen assembly includes multiple screen bars, which are independent of each other.
5. The rice and wheat threshing and sorting device according to claim 4, characterized in that, The front end of the frame is provided with a drum front cover plate, which is located above and in front of the threshing drum. The other end of the plurality of guide strips is fixedly connected to the drum front cover plate.
6. The rice and wheat threshing and sorting device according to claim 5, characterized in that, The grain bin has a straw outlet at the rear.
7. The rice and wheat threshing and sorting device according to claim 1, characterized in that, The top of the frame is covered.
8. The rice and wheat threshing and sorting device according to claim 5, characterized in that, The width of the vibrating screen assembly is greater than 15 cm.