CN109362338B

CN109362338B - Air-suction type grain recovering device for splashing seeds of vertical cutting knife of rape combine harvester

Info

Publication number: CN109362338B
Application number: CN201811464654.4A
Authority: CN
Inventors: 关卓怀; 沐森林; 吴崇友; 江涛; 王刚; 李海同; 金梅; 张敏; 陈旭; 吴俊�; 汤庆; 梁苏宁
Original assignee: Nanjing Research Institute for Agricultural Mechanization Ministry of Agriculture
Current assignee: Nanjing Research Institute for Agricultural Mechanization Ministry of Agriculture
Priority date: 2018-12-03
Filing date: 2018-12-03
Publication date: 2020-03-17
Anticipated expiration: 2038-12-03
Also published as: CN109362338A

Abstract

The invention discloses a kernel splashing air-suction type recovery device of a vertical cutting knife of a rape combine harvester, which comprises a divider and the vertical cutting knife, wherein the bottom of the divider is welded with the bottom end of a kernel collecting bin, the kernel collecting bin is connected with a negative pressure recovery port, a first air pipe is connected with a feed inlet of a separation and sedimentation device, the separation and sedimentation device is connected with a second air pipe, and the second air pipe is connected with a fan. This rape combine erects cutting knife seed grain air-suction type recovery unit that splashes can reduce because the rape seed splash loss that the cutting of erecting the cutting knife caused, and when the rape was erected the cutting knife and is cut the twisted branches of rape, there was scattered seed grain, utilizes the seed grain collection storehouse to collect scattered seed grain to utilize the negative pressure air current that the fan produced, pneumatic transport seed grain to separation settling device accomplishes and subsides the collection, directly utilizes the negative pressure air current of fan air intake to collect seed grain, and the material can not cause the jam of fan through the fan.

Description

Air-suction type grain recovering device for splashing seeds of vertical cutting knife of rape combine harvester

Technical Field

The invention relates to the technical field of rape combine harvesters, in particular to an air-suction type grain splashing recovery device for a vertical cutting knife of a rape combine harvester.

Background

Rape plants are tall, branched, densely distributed and crossed and mutually dragged, and when the rape plants are harvested mechanically, a vertical cutting knife needs to be additionally arranged on a header of a rice and wheat harvester to cut off dragged rape branches. However, when the vertical cutting knife is used for cutting the rape straws, the rape pod can be cut off at the same time, and the splashing loss of rape seeds is caused.

Disclosure of Invention

The invention aims to provide an air-suction type oilseed recovery device for splashed oilseed rape seeds of a vertical cutting knife of a rape combine harvester, and the air-suction type oilseed recovery device is used for solving the problem that pod cutting is inevitable in the cutting process of the vertical cutting knife of the rape combine harvester, which is provided by the background technology, so that the splashing loss of the oilseed rape seeds is caused.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a rape combine erects cutting knife seed grain air-suction type recovery unit that splashes, includes divider and erects the cutting knife, the bottom welded connection in storehouse is collected to the bottom of divider and seed grain, and seed grain collection storehouse and negative pressure recovery mouth are connected to install first tuber pipe on the negative pressure recovery mouth, erect the cutting knife and be equidistant distribution, the feed inlet of first tuber pipe and separation settlement device is connected, and separation settlement device and second tuber pipe link to each other to second tuber pipe and fan link to each other, the fan is constituteed the recovery unit body jointly with the separation settlement device, and the recovery unit body all installs on the header with erecting the cutting knife.

Preferably, the tail ends of the first air pipe and the second air pipe are respectively connected with the separation and sedimentation device from two sides, and the first air pipe is communicated with the kernel collecting bin through a negative pressure recovery port.

Preferably, a feed inlet and an air outlet are respectively arranged on two sides of the separation and sedimentation device, an air duct, a grain falling opening and a filter screen are arranged in the separation and sedimentation device, and a discharge opening is arranged at the bottom end of the separation and sedimentation device.

Preferably, the feed inlet and the air outlet are symmetrically distributed and have the same height, and the air outlet is communicated with the second air pipe.

Preferably, the filter screen is positioned between the discharge opening and the falling grain opening, and the diameter of the mesh of the filter screen is 6 mm.

Preferably, the diameter of the cross section of the air duct at the falling particle opening is the largest, and the diameters of the cross sections of the air duct at the feeding opening and the air outlet are the smallest.

Compared with the prior art, the invention has the beneficial effects that: this rape combine erects cutting knife seed grain air-aspiration type recovery unit that splashes, on the basis of current rape combine header structure, increase and erect the cutting knife seed grain air-aspiration type recovery unit that splashes, utilize the seed grain to collect the storehouse and collect scattered seed grain, and utilize the negative pressure air current that the fan produced, air conveying seed grain to separation settling device, accomplish and subside and collect, the direct negative pressure air current that utilizes the fan air intake collects seed grain, and seed grain can not lead to the fact the jam of fan through the fan, ensure to splash seed grain and can be by the collection of maximum, reduced because erect the rapeseed splash loss that the cutting knife caused.

Drawings

FIG. 1 is a schematic view of a connection front view structure of the present invention;

fig. 2 is a schematic view of the overall structure of the present invention.

In the figure: 1. a crop divider; 2. a kernel collecting bin; 3. a negative pressure recovery port; 4. a first air duct; 5. erecting a cutter; 6. a separation and sedimentation device; 601. a feed inlet; 602. an air duct; 603. an air outlet; 604. filtering with a screen; 605. a discharge opening; 606. a grain falling port; 7. a second air duct; 8. a fan; 9. a header; 10. and recovering the device body.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a splashing grain air-suction type recovery device for a vertical cutting knife of a rape combine harvester comprises a grain divider 1, a grain collecting bin 2, a negative pressure recovery port 3, a first air pipe 4, a vertical cutting knife 5, a separation and sedimentation device 6, a feed inlet 601, an air duct 602, an air outlet 603, a filter screen 604, a discharge port 605, a grain falling port 606, a second air pipe 7, a fan 8, a header 9 and a recovery device body 10, wherein the bottom of the grain divider 1 is welded with the bottom end of the grain collecting bin 2, the grain collecting bin 2 is connected with the negative pressure recovery port 3, the negative pressure recovery port 3 is provided with the first air pipe 4, the vertical cutting knives 5 are distributed at equal intervals, the first air pipe 4 is connected with the feed inlet 601 of the separation and sedimentation device 6, the separation and sedimentation device 6 is connected with the second air pipe 7, the second air pipe 7 is connected with the fan 8, and the fan 8 and the separation and sedimentation device 6 jointly form, and the recovery device body 10 and the vertical cutting knife 5 are both arranged on the header 9.

The tail ends of the first air pipe 4 and the second air pipe 7 are respectively connected with the separation and sedimentation device 6 from two sides, the first air pipe 4 is communicated with the grain collecting bin 2 through the negative pressure recovery port 3, and the grain collecting bin 2 is formed by bending a plate and is welded with the bottom plate of the divider 1 to form a closed space. Scattered seed grain falls into 2 seed grains collection storehouse under the effect of gravity, and divider 1 bottom plate is certain angle with ground, guarantees that the seed grain that falls can not pop out, and under the combined action of gravity and harvester work vibration, the seed grain is concentrated in the recovery unit bottom, under the effect of negative pressure air current, is collected through negative pressure recovery mouth 3.

The two sides of the separation and sedimentation device 6 are respectively provided with a feed inlet 601 and an air outlet 603, the separation and sedimentation device 6 is internally provided with an air duct 602, a granule dropping port 606 and a filter screen 604, the bottom end of the separation and sedimentation device 6 is provided with a discharge port 605, the feed inlet 601 and the air outlet 603 are symmetrically distributed and have the same height, the air outlet 603 is communicated with the second air duct 7, the filter screen 604 is positioned between the discharge port 605 and the granule dropping port 606, the mesh diameter of the filter screen 604 is 6mm, the cross-sectional diameter of the air duct 602 at the granule dropping port 606 is the largest, the cross-sectional diameters of the air ducts 602 at the feed inlet 601 and the air outlet 603 are the smallest, the grains enter the separation and sedimentation device 6 from the feed inlet 601 along with the negative pressure air flow, the grains settle through the filter screen 604 and the granule dropping port 606 to complete the separation, the air flow enters the second air duct 7 through, the middle grain falling opening 606 is widest, the air speed in the first air pipe 4 is higher than the grain suspension speed, grain transportation can be achieved, after the air duct 602 is widened, according to the Bernoulli equation, the air speed is reduced, when the air speed is reduced to be lower than the grain suspension speed, gas-solid separation is carried out, grains settle, the settled grains are collected through the discharge opening 605 at regular time, grain recovery is completed, the mesh diameter of the filter screen 604 is 6mm, rape grains can pass through, long stalks and other sundries are filtered, and when the harvester is not used, the harvester can be detached and cleaned.

The working principle is as follows: when the vertical cutting knife 5 cuts the twisted branches of the rape, scattered seeds are produced, the scattered seeds are collected by using a seed collecting bin 2, an air inlet of a fan 8 driven by a hydraulic motor is connected with a second air pipe 7, negative pressure air flow at the air inlet of the fan 8 is used as power for recovering the seeds, the fan 8 is arranged at the back of a header 9, the seeds are concentrated at the bottom of the seed collecting bin 2 under the combined action of gravity and working vibration of the harvester, the seeds are collected through a negative pressure recovering port 3 under the action of the negative pressure air flow, the seeds enter a separation and sedimentation device 6 along with the negative pressure air flow from a feed inlet 601, the separation and sedimentation device 6 is arranged at the side of the header 9, the seeds are settled through a filter screen 604 and a gas-solid particle dropping port 606 to complete separation, the air flow enters a second air pipe 7 through an air outlet 603, and the sedimentation principle is that an air duct 602 is, the air speed in the first air pipe 4 is higher than the suspension speed of the seeds, the transportation of the seeds can be realized, after the air channel 602 is widened, according to the Bernoulli equation, the air speed is reduced, when the air speed is reduced to be lower than the suspension speed of the seeds, the gas-solid separation is realized, the seeds are settled, the seeds are collected through the discharge opening 605 at regular time, the recovery of the seeds is completed, the mesh diameter of the filter screen 604 is 6mm, the rape seeds can pass through, the filter screen 604 can filter other sundries such as long stalks, and the harvester can be detached and cleaned when not in use.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a rape combine erects cutting knife seed grain aspiration type recovery unit that splashes, includes divider (1) and erects cutting knife (5), its characterized in that: the bottom of the divider (1) is connected with the bottom end of the grain collecting bin (2) in a welding mode, the grain collecting bin (2) is connected with the negative pressure recovery port (3), a first air pipe (4) is installed on the negative pressure recovery port (3), the vertical cutting knives (5) are distributed at equal intervals, the first air pipe (4) is connected with a feed inlet (601) of the separation and sedimentation device (6), the separation and sedimentation device (6) is connected with a second air pipe (7), the second air pipe (7) is connected with a fan (8), the fan (8) and the separation and sedimentation device (6) jointly form a recovery device body (10), and the recovery device body (10) and the vertical cutting knives (5) are installed on a cutting table (9); a feed inlet (601) and an air outlet (603) are respectively arranged on two sides of the separation and sedimentation device (6), an air duct (602), a pellet falling port (606) and a filter screen (604) are arranged in the separation and sedimentation device (6), and a discharge port (605) is arranged at the bottom end of the separation and sedimentation device (6); the section diameter of the air duct (602) at the grain falling port (606) is the largest, and the section diameters of the air duct (602) at the feed port (601) and the air outlet (603) are the smallest; the filter screen (604) is positioned between the discharge opening (605) and the falling grain opening (606), and the diameter of the meshes of the filter screen (604) is 6 mm.

2. The air-suction type oilseed rape recovering device for the splashed kernels of the vertical cutting knife of the rape combine harvester as claimed in claim 1, is characterized in that: the tail ends of the first air pipe (4) and the second air pipe (7) are respectively connected with the separation and sedimentation device (6) from two sides, and the first air pipe (4) is communicated with the seed grain collecting bin (2) through the negative pressure recycling port (3).

3. The air-suction type oilseed rape recovering device for the splashed kernels of the vertical cutting knife of the rape combine harvester as claimed in claim 1, is characterized in that: the feed inlet (601) and the air outlet (603) are symmetrically distributed and have the same height, and the air outlet (603) is communicated with the second air pipe (7).