CN110073819A - A kind of threshing cleaning unit of tongue fur bran combine harvester - Google Patents

Abstract

A threshing and cleaning device for a teff combine harvester, installed on the frame of the teff combine harvester, comprising: a threshing drum, including a drum shaft and a fixed disc installed on the drum shaft, the fixed disc A plurality of threshing rods are evenly distributed on the circumference, and a plurality of threshing teeth are uniformly distributed on the threshing rods; a concave plate screen is set corresponding to the threshing drum and is located below the threshing drum; a swing vibrating screen is located on the concave plate Below the sieve; fan, located at the lower front end of the oscillating vibrating screen, the air outlet of the fan is facing the screen surface of the oscillating vibrating sieve; on the shelf, and located between the concave screen and the swinging vibrating screen, used to collect and evenly guide the grains and impurities at the rear of the concave screen to the middle and front of the swinging vibrating screen Perform even cleaning.

Description

Threshing and cleaning device for teff combine harvester

technical field

The invention relates to a harvesting machine for small seed crops, in particular to a threshing and cleaning device for a teff combine harvester.

Background technique

Teff is the main food crop in Ethiopia and is widely planted. During harvesting season, teff lodging is serious, the stalks are slender and weak, the grains are small and light, the thousand-grain weight is only 0.26-0.42g, the length, width and thickness are about 1mm, and the grain-to-grass ratio is small, which brings great difficulties to the combine harvester for threshing and cleaning. . How to completely thresh such small seeds from teff ears by machinery when harvesting teff, and separate them from chaff and fine straw, etc., to obtain clean teff seeds, reduce seed loss, and realize teff threshing The integrated operation with cleaning to make the teff combine achieve more efficient harvesting is a technical problem that needs to be solved urgently.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a threshing and cleaning device suitable for large-scale teff combine harvesters, so as to solve the problem of threshing and cleaning teff, improve the efficiency of teff harvesting, and reduce the loss of teff seeds.

In order to achieve the above object, the present invention provides a threshing and cleaning device of a teff combine harvester, which is installed on the frame of the teff combine harvester, including:

A threshing cylinder, comprising a cylinder shaft and a fixed disk installed on the cylinder shaft, a plurality of threshing rods are evenly distributed on the circumference of the fixed disk, and a plurality of threshing teeth are evenly distributed on the threshing rods;

a concave screen, set corresponding to the threshing drum and located below the threshing drum;

A swing vibrating screen, located below the concave screen;

Fan, located at the lower front end of the swing vibrating screen, the air supply port of the fan faces the screen surface of the swing vibrating screen; and

The material guide device is installed on the frame of the teff combine harvester, and is located between the concave screen and the swinging vibrating screen, and is used to return the grains and impurities at the rear of the concave screen to It is collected and evenly guided to the middle and front part of the swing vibrating screen for even cleaning.

The above-mentioned threshing and cleaning device for the teff combine harvester, wherein the threshing drum is an open structure, 6-12 threshing rods are arranged along the circumference of the fixed plate, and the threshing teeth include knife teeth and nail teeth.

The above-mentioned threshing and cleaning device for the teff combine harvester, wherein the concave sieve includes a front concave sieve and a rear concave sieve arranged in sequence, and the front concave sieve and the rear concave sieve The sieves are respectively provided with grid-type screens or small-diameter perforated screens.

The threshing and cleaning device of the teff combine harvester mentioned above, wherein, the material guide device is located below the rear concave screen.

The above-mentioned threshing and cleaning device for the teff combine harvester, wherein, the material guide device is arranged obliquely relative to the rear concave sieve, and the distance between the bottom surface of the material guide device and the axis of the rear concave sieve is There is an inclination angle between them.

In the threshing and cleaning device of the teff combine harvester mentioned above, the inclination angle is adjustable, and the rear end of the material guide device is higher than the front end.

The threshing and cleaning device of the teff combine harvester mentioned above, wherein, the material guide device is a groove-shaped structure that is convenient for collecting and sliding materials.

The above-mentioned threshing and cleaning device for the teff combine harvester, wherein the swinging vibrating screen is a swinging cleaning screen with a single screen surface, and the screen surface of the swinging cleaning screen with a single screen surface is a small-diameter punching screen noodle.

The threshing and cleaning device of the above-mentioned teff combine harvester, wherein, the oscillating vibrating sieve is a double-screen oscillating cleaning sieve, and the upper sieve surface of the double-screen oscillating cleaning sieve is a fish scale sieve, so The lower screen surface of the double screen surface swing type cleaning screen is a woven screen.

The above-mentioned threshing and cleaning device of the teff combine harvester, wherein, the air inlet of the fan is provided with an air regulating plate for adjusting the air volume of the fan.

Technical effect of the present invention is:

The threshing drum threshing rod and the concave plate sieve of the present invention are multi-configuration structures, and the threshing rod and the concave plate sieve can be flexibly configured according to the degree of teff maturity to improve the threshing and separation effect; the angle of the material guide device is adjustable, the front end is low and the rear end is high and The structure with high sides and low middle is convenient for material collection and sliding; the swing vibrating screen has two configurations of single screen surface and double screen surface, and the appropriate vibration screen method can be used according to the length and maturity of teff stalks.

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

Description of drawings

Fig. 1 is the structural representation of an embodiment of the present invention;

Fig. 2 is the front view of Fig. 1;

Fig. 3 is the top view of Fig. 1;

Fig. 4 is a schematic structural diagram of a single screen surface swing type cleaning screen according to an embodiment of the present invention;

Fig. 5 is a schematic structural diagram of a double screen surface swing type cleaning screen according to an embodiment of the present invention;

Fig. 6 is a schematic structural diagram of a material guiding device according to an embodiment of the present invention.

Among them, reference signs

1 threshing drum

11 threshing rod

111 spikes

112 teeth

12 roller shaft

13 fixed plate

2 concave screen

21 Front concave screen

22 rear concave screen

23 grid screen

24 small aperture perforated screen

3 swing vibrating screen

31 double screen surface swing type cleaning screen

311 Fish Scale Sieve

312 Woven Sieve

32 single screen surface swing type cleaning screen

321 small aperture punching screen

4 guide device

5 fans

51 air regulating plate

6 racks

Detailed ways

Below in conjunction with accompanying drawing, structural principle and working principle of the present invention are specifically described:

Referring to FIGS. 1-3 , FIG. 1 is a schematic structural view of an embodiment of the present invention, FIG. 2 is a front view of FIG. 1 , and FIG. 3 is a top view of FIG. 1 . The threshing and cleaning device of the teff combine harvester of the present invention is installed on the frame 6 of the teff combine harvester, comprising: a threshing drum 1 including a drum shaft 12 and a fixed disc 13 mounted on the drum shaft 12 , a plurality of threshing rods 11 are evenly distributed on the circumference of the fixed disc 13, and a plurality of threshing teeth are evenly distributed on the threshing rod 11, and the threshing drum 1 can be connected with the power mechanism of the teff combine harvester through the drum shaft 12, so as to Obtain the driving force of rotation; the concave plate sieve 2 is arranged corresponding to the threshing cylinder 1 and is located below the threshing cylinder 1; the swinging vibrating screen 3 is located below the concave plate sieve 2, and the swinging vibrating screen 3 It can be connected with the power mechanism of the teff combine harvester through a transmission mechanism such as a sprocket, a pulley or a gear to obtain a vibration driving force, or it can also be linked with the drum shaft 12; Below the front end, the air supply port of the fan 5 is facing the screen surface of the swinging vibrating screen 3, and the air inlet of the fan 5 is provided with an air regulating plate 51 for adjusting the air volume of the fan 5; and a material guiding device 4. It is installed on the frame 6 of the teff combine harvester, and is located between the concave screen 2 and the swinging vibrating screen 3, for separating the grains at the rear of the concave screen 2 and Impurities are collected and evenly guided to the middle and front part of the swing vibrating screen 3 for uniform cleaning, which can reduce the problems of grain running and leakage in the threshing and cleaning device of the teff combine harvester, and improve the cleaning efficiency of the teff combine harvester. efficiency.

The threshing cylinder 1 of this embodiment is preferably an open structure, and 6-12 threshing rods 11 are arranged along the circumference of the fixed plate 13, and the threshing teeth include knife teeth 112 and nail teeth 111, both Can be combined and arranged in a staggered manner on the threshing rod 11. Wherein, the concave sieve 2 includes a front concave sieve 21 and a rear concave sieve 22 arranged in sequence, and the front concave sieve 21 and the rear concave sieve 22 can be respectively provided with a grid pattern. Screen cloth 23 or small-aperture perforated screen cloth 24.

Referring to Fig. 4, Fig. 4 is a schematic structural diagram of a single-surface swing-type cleaning screen according to an embodiment of the present invention. The swinging vibrating screen 3 can be a swinging cleaning screen 32 with a single screen surface, and the screen surface of the swinging cleaning screen 32 with a single screen surface is preferably a small-diameter punching screen 321 .

Referring to Fig. 5, Fig. 5 is a schematic structural diagram of a double-screen swing-type cleaning screen according to an embodiment of the present invention. The swing type vibrating screen 3 can be a double screen surface swing type cleaning screen 31, the upper screen surface of the double screen surface swing type cleaning screen 31 is preferably a fish scale screen 311, and the double screen surface swing type cleaning screen The lower screen surface of 31 is preferably a woven screen 312.

Referring to FIG. 6, FIG. 6 is a structural schematic diagram of a material guide device according to an embodiment of the present invention. The material guiding device 4 is located below the rear concave screen 22 . The material guide device 4 is inclined relative to the rear concave screen 22 , and there is an inclination angle between the bottom surface of the material guide device 4 and the axis of the rear concave screen 22 . The angle of the inclination angle is adjustable, and the rear end of the material guide device 4 is higher than the front end thereof. The material guiding device 4 is preferably a groove-shaped structure with a low front end and a high rear end, high sides and low middle, which is convenient for collecting and sliding materials.

Both the threshing rod and the concave plate sieve of the threshing drum of the present invention have a multi-configuration structure, and the threshing rod and the concave plate sieve can be flexibly configured according to the degree of teff maturity to improve the threshing and separation effect; Various configurations are optional, and the appropriate vibrating screen method can be used according to the length and maturity of teff stalks; the angle of the material guide device is adjustable, the front end is low, the rear end is high, and the two sides are high and the middle is low, which is convenient for material collection and sliding. The grains and impurities at the back of the concave plate sieve are collected and evenly guided to the middle and front of the swinging vibrating screen for even cleaning, which reduces the problems of grain running and leakage in the threshing and cleaning device of the teff combine harvester, and improves the quality of the teff. Cleaning efficiency of bran combine harvesters.

Certainly, the present invention also can have other multiple embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding Changes and deformations should all belong to the protection scope of the appended claims of the present invention.

Claims (10)

1. a threshing and cleaning device of a teff combine harvester, installed on the frame of the teff combine harvester, is characterized in that, comprising: A threshing cylinder, comprising a cylinder shaft and a fixed disk installed on the cylinder shaft, a plurality of threshing rods are evenly distributed on the circumference of the fixed disk, and a plurality of threshing teeth are evenly distributed on the threshing rods; a concave screen, set corresponding to the threshing drum and located below the threshing drum; A swing vibrating screen, located below the concave screen; Fan, located at the lower front end of the swing vibrating screen, the air supply port of the fan faces the screen surface of the swing vibrating screen; and The material guide device is installed on the frame of the teff combine harvester, and is located between the concave screen and the swinging vibrating screen, and is used to return the grains and impurities at the rear of the concave screen to It is collected and evenly guided to the middle and front part of the swing vibrating screen for even cleaning. 2. The threshing and cleaning device of the teff combine harvester according to claim 1, wherein the threshing drum is an open structure, and 6-12 threshing bars are arranged along the circumference of the fixed plate , the threshing teeth include knife teeth and nail teeth. 3. The threshing and cleaning device of the teff combine harvester according to claim 1 or 2, wherein the concave sieve comprises a front concave sieve and a rear concave sieve arranged in sequence, the front concave sieve Grid-type screens or small-diameter punched screens are respectively arranged on the concave screen at the top and the concave screen at the rear. 4 . The threshing and cleaning device of the teff combine harvester according to claim 3 , wherein the material guide device is located below the rear concave screen. 5. the threshing and cleaning device of the teff combine harvester according to claim 4, is characterized in that, described material guiding device is inclined to be arranged with respect to described rear concave plate sieve, and the bottom surface of described material guiding device and described material guiding device There is an inclination angle between the axes of the rear concave screen. 6. The threshing and cleaning device of the teff combine harvester according to claim 5, characterized in that, the angle of the inclination angle is adjustable, and the rear end of the material guide device is higher than the front end thereof. 7. The threshing and cleaning device of the teff combine harvester according to claim 6, characterized in that, the material guiding device is a groove-shaped structure that is convenient for collecting and sliding materials. 8. The threshing and cleaning device of the teff combine harvester according to claim 1 or 2, characterized in that, the swing-type vibrating screen is a swing-type cleaning screen with a single screen surface, and the swing-type cleaning screen with a single screen surface The sieve surface of the screen is a small-diameter punched sieve surface. 9. The threshing and cleaning device of the teff combine harvester according to claim 1 or 2, characterized in that, the swinging vibrating screen is a swinging cleaning screen with double screen surfaces, and the swinging type cleaning screen with double screen surfaces The upper screen surface of the screening screen is a fish scale screen, and the lower screen surface of the double screen surface swing type cleaning screen is a woven screen. 10. The threshing and cleaning device of the teff combine harvester according to claim 1 or 2, characterized in that, the air inlet of the fan is provided with an air regulating plate for adjusting the air volume of the fan.