WO2022141994A1

WO2022141994A1 - Grain separation structure and screening system

Info

Publication number: WO2022141994A1
Application number: PCT/CN2021/090092
Authority: WO
Inventors: 王军; 邢立成; 史文娟
Original assignee: 江苏沃得农业机械股份有限公司
Priority date: 2020-12-30
Filing date: 2021-04-27
Publication date: 2022-07-07
Also published as: CN112673817A

Abstract

A grain separation structure and a screening system. The grain separation structure comprises an isolation element and a front curtain, which are arranged between a grain collection area (M) and a residue collection area (N), and are fixed on a housing of a vibrating screen; the isolation surface of the isolation element extends from one side of the grain collection area (M) to above the residue collection area, the front curtain (3e) extends in the same direction as the isolation surface, and has one end fixed on the isolation element and the other end placed on a grain bottom housing (5e) in the grain collection area (M), so as to block the opening formed between the isolation element and the grain bottom housing (5e) and connecting the grain collection area (M) and the residue collection area (N), so that the air blown by a fan travels along the front curtain (3e) and the isolation element and is blown out from the opening formed between the isolation element and a lower screen (8e), avoiding the situation in which return air carrying residue enters the grain collection area (M) and contaminates grains in a granary, and also increasing the air volume at the end of the lower screen (8e) to improve the air selection effect.

Description

A kind of grain separation structure and screening system

technical field

The present application relates to the technical field of agricultural machinery, in particular to a grain separation structure and a screening system.

Background technique

In the existing harvester screening system, a grain collection area and a miscellaneous waste collection area are respectively set, and the grain collection area and the miscellaneous waste collection area are arranged adjacent to one another at the bottom of the vibrating screen. The grain collection area is used to collect the clean grains in the vibrating sieve that have passed through the lower sieve; while the uncleaned crop stalks and the broken grass entraining the grains and other heavy debris move backward with the vibration of the lower sieve and fall into the rear. the miscellaneous collection area. The grain collection area and the miscellaneous waste collection area are both collection grooves surrounded by inclined slopes on opposite sides. The grain auger and the miscellaneous auger are respectively set in the collection groove to transport the clean grains into the granary. Or the miscellaneous waste is transported to the recovery mechanism.

In the prior art, in the vertical direction, the lower sieve is arranged at intervals between the grain collection area and the miscellaneous waste collection area, forming a channel for fan ventilation for air selection, and the fan blows air from the grain collection area to the side of the miscellaneous waste collection area, Part of the air blowing into the miscellaneous waste collection area and guided by the inclined side wall surface of the miscellaneous waste collection area to the grain collection area, it is easy to bring the miscellaneous waste in the miscellaneous waste collection area into the grain collection area, causing the dust collected in the grain collection area. The kernels are not clean.

SUMMARY OF THE INVENTION

Therefore, the technical problem to be solved by the present application is to overcome the easy mixing of impurities in the grain collection in the prior art, resulting in poor grain cleanliness.

To this end, the present application proposes a grain separation structure, comprising:

The spacer is arranged between the grain collection area and the miscellaneous waste collection area, and is fixed on the shell of the vibrating screen; the isolation surface of the spacer extends from one side of the grain collection area to the top of the miscellaneous waste collection area;

A front curtain, which extends in the same direction as the isolation surface, one end is fixed on the isolation piece, and the other end is placed on the grain bottom shell in the grain collection area; it is suitable for shielding the isolation piece and the grains An opening formed between the bottom shells communicates the grain collection area and the miscellaneous waste collection area.

Also includes:

The rear curtain is arranged at an angle to the isolation surface, and one end is fixed on the spacer, and the other end is placed on the miscellaneous bottom case in the miscellaneous waste collection area; it is suitable for shielding the spacer and the An opening formed between the miscellaneous residue bottom shells and communicates the miscellaneous residue collecting area and the grain collecting area.

The front curtain is a rubber curtain or a canvas curtain.

The rear curtain is a rubber curtain or a canvas curtain.

The width of the rear curtain is smaller than the straight-line distance from the fixing point of the rear curtain on the spacer to the auger in the waste collection area.

The spacer includes:

Partition plate;

Two connecting plates are arranged on both sides of the separating plate; the connecting plates are fixedly connected to the shell of the vibrating screen.

The separating plate and the connecting plates on both sides are arranged in a trough-shaped structure.

One end of the separating plate away from the grain collection area is provided with a flange toward the miscellaneous waste collection area.

An obtuse angle is formed between the flange and the dividing plate.

The present application proposes a screening system comprising the above-mentioned grain separation structure.

The technical solution of the present application has the following advantages:

1. The grain separation structure provided by this application includes a spacer and a front curtain, which is arranged between the grain collection area and the miscellaneous waste collection area, and is fixed on the shell of the vibrating screen, and the isolation surface of the spacer is separated from the grain collection area. One side extends above the miscellaneous waste collection area, the front curtain extends in the same direction as the isolation surface, one end is fixed on the spacer, and the other end is placed on the grain bottom shell in the grain collection area to block the spacer and the grain bottom shell. The opening that connects the grain collection area and the miscellaneous waste collection area is formed between the two, so that the fan blows along the front curtain and the spacer and blows out from the opening formed between the spacer and the lower screen, so as to prevent the return air from entraining the miscellaneous waste into the grain collection area. , pollute the grains of the granary, and at the same time increase the air volume blown at the end of the lower sieve to improve the effect of wind selection.

2. The grain separation structure provided by this application also sets a back curtain in the miscellaneous waste collection area, and one end of the back curtain curtain is fixed on the spacer, and the other end is placed on the miscellaneous excess bottom shell in the miscellaneous waste collection area to further avoid. The return air lifts the front curtain, causing debris to enter the grain collection area.

Description of drawings

In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the accompanying drawings required in the description of the specific embodiments or the prior art will be briefly introduced below. The drawings are some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

FIG. 1 is a structural schematic diagram 1 of the grain separation structure in the embodiment of the application;

2 is a schematic structural diagram of a spacer in an embodiment of the application;

FIG. 3 is a second structural schematic diagram of the grain separation structure in the embodiment of the present application.

Description of reference numbers:

1e, dividing plate; 11e, flanging; 2e, connecting plate; 3e, front curtain; 4e, rear curtain; 5e, grain bottom shell; 6e, miscellaneous bottom shell; 8d, lower sieve; M, grain collection area; N, miscellaneous surplus collection area.

Detailed ways

The technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood in specific situations.

In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict with each other.

Example 1

The present embodiment provides a grain separation structure, as shown in FIG. 1 , including a spacer and a front curtain 3e. As shown in FIG. 3 , the spacer is arranged between the grain collection area M and the miscellaneous waste collection area N, and is fixed on the shell of the vibrating screen. The width of the spacers is the same as the width of the grain collection area M and the trash collection area N.

In this embodiment, as shown in FIG. 1 , the spacer includes a dividing plate 1e and connecting plates 2e arranged on both sides of the dividing plate 1e. The width of the connecting plate 2e is the same as the width of the dividing plate 1e. The connecting plates 2e and The partition plates 1e are arranged in an indented structure. One end of the connecting plate 2e is fixed on the separating plate 1e, and the other end is fixed on the shell of the vibrating screen. The plate surface of the partition plate 1e extends upwards from the grain collection area M to the top of the miscellaneous waste collection area N. The two sides of the partition plate 1e form isolation surfaces, the front curtain 3e and the plate surface of the partition plate 1e extend in the same direction, one end is fixed on the partition plate 1e, and the other end is placed on the grain bottom in the grain collection area M On the shell 5e, to block the openings formed between the partition plate 1e and the grain bottom shell 5e to communicate with the grain collection area M and the miscellaneous waste collection area N, so that the fan blows along the front curtain 3e and the partition plate 1e and travels from the separation plate 1e. The opening formed between the upper end of the partition 1e and the lower sieve 8d is blown out, so as to prevent the return air from entering the grain collection area M with impurities, polluting the grains of the granary, and at the same time, it can increase the air volume blown at the end of the lower sieve 8d, and improve the effect of air selection. .

The front curtain 3e is a rubber curtain or a canvas curtain. In this embodiment, the front curtain 3e adopts a rubber curtain. As shown in FIG. 1 or FIG. The surface of the bottom shell 5e sags naturally, and the rubber-covered curtain has a certain adhesive force in surface-to-surface contact with the seed bottom shell 5e, which can better prevent the curtain from being blown up by the fan.

As shown in FIG. 1 , a rear curtain 4e is also provided in the waste collection area N. One end of the rear curtain 4e is fixed on the partition plate 1e, and the other end is placed on the waste bottom shell 6e in the waste collection area N. , to further prevent the front curtain 3e from being lifted by the return air, causing the miscellaneous residues to enter the grain collection area M. The width of the rear curtain 4e is smaller than the straight-line distance from its fixed point on the partition plate 1e to the auger in the miscellaneous waste collection area N, so as to avoid the entanglement of the rear curtain 4e when the auger rotates and cause failure. Similarly, the rear curtain 4e is a rubber curtain or canvas curtain. In this embodiment, the rear curtain 4e adopts a rubber curtain. As shown in FIG. 1 or FIG. 3 , the rubber curtain is partially installed on the residual bottom shell 6e On the upper side, it sags naturally along the surface of the residual bottom shell 6e, and the rubber curtain is in contact with the residual bottom shell 6e. The whirling wind blew.

The partition plate 1e, the front curtain 3e and the rear curtain 4e form a herringbone isolation structure and are erected between the grain collection area M and the miscellaneous waste collection area N, and the grain collection area M and the miscellaneous waste collection area N are fully isolated to avoid crossing. pollution, to ensure the cleanliness of the grains in the warehouse.

As shown in FIG. 2 , one end of the grain collecting area M of the partition plate 1e is provided with a flange 11e facing the miscellaneous waste collecting area N, and the angle between the flange 11e and the surface of the partition plate 1e is an obtuse angle. The setting of the flange 11e is suitable for guiding the cyclone wind traveling along the inner wall surface of the residual bottom shell 6e and the rear curtain 4e, and blocking the crop debris entrained in the cyclone from the opening between the partition plate 1e and the lower screen 8d. Enter the grain collection area M.

As a first alternative implementation of this embodiment, the rear curtain 4e may not be provided, and only the front curtain 3e may be provided.

Example 2

This example provides a screening system, including the grain separation structure of Example 1.

Obviously, the above-mentioned embodiments are only examples for clear description, and are not intended to limit the implementation manner. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. However, the obvious changes or changes derived from this are still within the protection scope of the present application.

Claims

A grain separation structure is characterized in that, comprising:

The spacer is arranged between the grain collection area (M) and the miscellaneous waste collection area (N), and is fixed on the shell of the vibrating screen; the spacer surface of the spacer extends from the side of the grain collection area (M) to Above the miscellaneous waste collection area (N);

A front curtain (3e), which extends in the same direction as the isolation surface, one end is fixed on the spacer, and the other end is placed on the grain bottom shell (5e) in the grain collecting area (M); suitable for The opening formed between the spacer and the grain bottom shell (5e) that communicates with the grain collection area (M) and the miscellaneous waste collection area (N) is blocked.
The grain separation structure of claim 1, further comprising:

The rear curtain (4e) is arranged at an angle to the isolation surface, and one end is fixed on the spacer, and the other end is placed on the miscellaneous waste bottom case (6e) in the miscellaneous waste collection area (N); It is suitable for shielding the opening formed between the spacer and the miscellaneous bottom shell (6e) to communicate with the miscellaneous waste collection area (N) and the grain collection area (M).
The grain separation structure according to claim 1, wherein the front curtain (3e) is a rubber curtain or a canvas curtain.
The grain separation structure according to claim 2, wherein the rear curtain (4e) is a rubber curtain or a canvas curtain.
The grain separation structure according to claim 4, characterized in that the width of the rear curtain (4e) is smaller than the fixing point of the rear curtain (4e) on the partition to the miscellaneous waste collection area The straight-line distance of the auger within (N).
The grain separation structure of any one of claims 1 to 5, wherein the spacer comprises:

Separator (1e);

Two connecting plates (2e) are arranged on both sides of the separating plate (1e); the connecting plates (2e) are fixedly connected to the shell of the vibrating screen.
The grain separating structure according to claim 6, characterized in that, the separating plates (1e) and the connecting plates (2e) on both sides are arranged in an indented structure.
The grain separation structure according to claim 7, characterized in that, one end of the separation plate (1e) away from the grain collection area (M) is provided with a flange (11e) toward the miscellaneous waste collection area (N). .
The grain separating structure according to claim 8, characterized in that, the flange (11e) and the separating plate (1e) are arranged at an obtuse angle.
A screening system, characterized by comprising the grain separation structure of any one of claims 1 to 9.