CN112690105A

CN112690105A - Front sealing structure of vibrating screen

Info

Publication number: CN112690105A
Application number: CN202011613726.4A
Authority: CN
Inventors: 王军; 邢立成; 史文娟
Original assignee: Jiangsu World Agricultural Machinery Co Ltd
Current assignee: Jiangsu World Agricultural Machinery Co Ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-04-23
Also published as: WO2022141992A1

Abstract

The invention provides a front sealing structure of a vibrating screen, wherein a sealing element is fixedly arranged between a front material plate used for guiding grains to slide downwards below a threshing cylinder of a harvester and a fan shell below the front material plate, the width of the sealing element is not less than the width of the screen surface of the vibrating screen between the front material plate and the fan shell, and two opposite side edges in the width direction of the sealing element and the left side wall and the right side wall of a rack are respectively arranged correspondingly and in a clearance mode. The opening of the vibration sieve, which is surrounded by the front material plate positioned above, the fan shell positioned below and the left and right side walls of the rack, is sealed by the sealing element, crop seeds are blocked by the sealing element and fall back to the seed collecting area below the vibration sieve along the fan shell, so that the crop seeds are prevented from flying out of the opening and falling to the ground, and waste is caused.

Description

Front sealing structure of vibrating screen

Technical Field

The invention relates to the technical field of agricultural machinery, in particular to a front sealing structure of a vibrating screen.

Background

The crawler-type combine harvester threshing system can be divided into a longitudinal axial flow type threshing and cleaning system and a transverse axial flow type threshing and cleaning system, and the threshing and cleaning systems in the two forms are the main structural forms used in the current market.

The existing combine harvester is integrally divided into a threshing area, a screening area and an air separation area from top to bottom, in the screening area, crop grains, straws and other sundries are separated and screened through reciprocating vibration of a vibrating screen, the vibrating screen vibrates in an elliptical vibration track in a reciprocating manner, although a front corrugated plate in the vibrating screen is arranged downwards towards the tail end of the harvester in a downward tilting mode so as to guide the movement of crops, the grains can still fly out from the front end of the vibrating screen due to the vibration component of the vibrating screen in the horizontal direction.

In the prior art, in order to solve the technical problem, the canvas is arranged at the front end of the vibrating screen to shield, but the vibrating screen is in a continuous working state during working, and the canvas needs to have enough stretching allowance and cannot be fixed to adapt to the amplitude of the vibrating screen, so that gaps exist between the canvas and the vibrating screen and between the canvas and the left side wall and the right side wall of the frame, and the gaps can be enlarged occasionally in the vibrating process to cause the leakage of crop seeds, and the crop seeds fall to the ground from the front end of the frame and cannot be collected to cause waste.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to overcome the defect that the screening system of the harvester in the prior art is easy to leak grains and cause waste.

To this end, the present invention provides a front sealing structure of a vibrating screen, comprising:

the sealing element is fixed between the front material plate and the fan shell positioned below the front material plate; the width of the sealing element is not less than the width of the screen surface of the vibrating screen between the front material plate and the fan shell;

two opposite side edges in the width direction of the sealing element are respectively fixed on the left side wall and the right side wall of the frame.

And sealant is filled in gaps between the two side edges of the sealing element and the left side wall and the right side wall of the rack.

At least one viewing port opening in the seal; and a transparent visual element is arranged on the observation port.

The visual piece is fastened on the observation port through a butterfly nut.

The visual element is an acrylic plate or a glass plate.

The sealing element is a sealing plate; one end of the sealing plate is flanged and is fixedly attached to the lower plate surface of the front material plate; the other end is fixed on the outer wall surface of the fan shell.

Further comprising:

the first shielding piece is arranged between the front material plate and a screen front plate of the vibrating screen; the first shielding piece is a flexible piece which is provided with an extension allowance for the reciprocating vibration of the vibrating screen.

The width of the first shielding piece is not smaller than the width of the screen surface of the vibrating screen.

Further comprising:

and one end of the second shielding piece is fixed at one end of the front material plate, which faces the vibrating screen, and the other end of the second shielding piece is a free end and naturally droops to the screen surface of the vibrating screen.

The first shielding piece and the second shielding piece are made of canvas materials.

The technical scheme of the invention has the following advantages:

1. according to the front sealing structure of the vibrating screen, the sealing element is fixedly arranged between the front material plate used for guiding grains to slide downwards below the threshing cylinder of the harvester and the fan shell below the front material plate, the width of the sealing element is not less than the width of the screen surface of the vibrating screen between the front material plate and the fan shell, and two opposite side edges in the width direction of the sealing element correspond to the left side wall and the right side wall of the rack respectively and are arranged in a clearance mode. The opening of the vibration sieve, which is surrounded by the front material plate positioned above, the fan shell positioned below and the left and right side walls of the rack, is sealed by the sealing element, crop seeds are blocked by the sealing element and fall back to the seed collecting area below the vibration sieve along the fan shell, so that the crop seeds are prevented from flying out of the opening and falling to the ground, and waste is caused.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic view of a sealing plate mounting structure according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a front seal structure of a vibrating screen in an embodiment of the present invention.

Description of reference numerals:

H. vibrating screen; 1. a frame; 1f, a sealing plate; 11f, a viewing port; 2f, a front material plate; 3f, a fan shell; 4f, a visual element; 5f, screening a front plate; 6f, a first shade; 7f, a second shade; 8f and butterfly nuts.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Example 1

The embodiment provides a preceding seal structure of shale shaker, and threshing cylinder below sets up the preceding material board 2f that is used for guiding crop seed grain gliding, and frame 1 at the front end is fixed to preceding material board 2f one end, and the face sets up to 1 afterbody downward sloping from frame 1 front end to frame. The other end of the front material plate 2f is positioned above the vibrating screen H and is positioned in the orthographic projection of the vibrating screen H on the horizontal plane.

As shown in fig. 1, the sealing element is fixed between the front material plate 2f and the fan housing 3f below the front material plate 2f, the width of the sealing element is not less than the width of the screen surface of the vibrating screen H between the front material plate 2f and the fan housing 3f, and two opposite side edges in the width direction of the sealing element are respectively fixed on the left side wall and the right side wall of the frame 1. In this embodiment, the sealing member adopts closing plate 1f, and the turn-ups setting in closing plate 1f upper end, the turn-ups pass through the bolt fastening on the lower surface of preceding material board 2f, and the lower extreme of closing plate 1f passes through the bolt fastening on the turn-ups of fan casing 3f, and the clearance that exists because machining error between closing plate 1f both sides limit and the left and right sides wall of frame 1 is sealed fixed through sealed the packing of gluing.

In this embodiment, as shown in fig. 1 or fig. 2, the sealing plate 1f is bent in a section, a section close to the front material plate 2f is vertically arranged, a section close to the fan housing 3f is obliquely arranged, and forms a slope with the outer wall surface of the fan housing 3f, so as to guide crop seeds leaking from the vibrating screen H. As shown in fig. 1, at least one observation port is formed in the vertical section of the sealing plate 1f, in this embodiment, two observation ports are formed, and a visible piece 4f is fixed on each observation port through a butterfly nut 8f and used for observing that no crop is piled up on the vibrating screen H. The viewing element 4f may be a transparent acrylic plate or a glass plate, preferably an acrylic plate, which is light and not easily breakable.

The opening of the vibrating screen H, which is surrounded by the front material plate 2f positioned above, the fan shell 3f positioned below and the left and right side walls of the rack 1, is sealed by the sealing plate 1f, crop seeds are blocked by the sealing plate 1f and fall back to the seed collecting area below the vibrating screen H along the fan shell 3f, and therefore the crop seeds are prevented from flying out of the opening and falling to the ground, and waste is caused.

Further, for preventing the crop seed grain from piling up between fan housing 3f and closing plate 1f, as shown in fig. 2, still set up first shielding piece 6f, first shielding piece 6f one end is fixed and is located the one end of shale shaker H top on preceding material board 2f, and the other end of first shielding piece 6f is fixed on the sieve front bezel 5f that is located the foremost end of shale shaker H, and first shielding piece 6f is certain contained angle setting with the sifting surface of shale shaker H. The width of the first shielding piece 6f is not smaller than the width of the screen surface of the vibrating screen H, the first shielding piece 6f is a flexible piece, and the two ends of the first shielding piece 6f are fixed and then still have stretching allowance for the vibrating screen H to vibrate in a reciprocating mode, so that the vibrating screen H is prevented from being hindered from moving.

As shown in fig. 2, a second shielding piece 7f is further fixed at one end of the first shielding piece 6f on the front material plate 2f, the other end of the second shielding piece 7f is a free end and naturally droops to the screen surface of the vibrating screen H, and double-layer shielding is performed through the two shielding pieces arranged in the front and the back.

In this embodiment, both the first and

second shields

6f and 7f are canvas.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. A front seal structure of a vibrating screen, comprising:

the sealing element is fixed between the front material plate (2f) and a fan shell (3f) positioned below the front material plate (2 f); the width of the sealing element is not less than the width of the screen surface of a vibrating screen (H) between the front material plate (2f) and the fan shell (3 f);

two opposite side edges in the width direction of the sealing element are respectively fixed on the left side wall and the right side wall of the frame (1).

2. Front sealing structure of vibrating screen according to claim 1, characterized in that the gap between the two sides of the sealing element and the left and right side walls of the frame (1) is filled with a sealant.

3. Front sealing structure of a vibrating screen according to claim 2, characterized by at least one viewing port (11f) opening on the sealing element; a transparent visual element (4f) is arranged on the observation port (11 f).

4. Front sealing structure of a vibrating screen, according to claim 3, characterized in that the visual element (4f) is fastened to the viewing opening (11f) by means of a wing nut (8 f).

5. Front sealing structure of vibrating screen according to claim 4, characterized in that the visual element (4f) is an acrylic or glass plate.

6. A front sealing structure of a vibrating screen according to claim 3, characterized in that the sealing member is a sealing plate (1 f); one end of the sealing plate (1f) is flanged and is attached and fixed on the lower plate surface of the front material plate (2 f); the other end is fixed on the outer wall surface of the fan shell (3 f).

7. The front seal structure of a shaker as claimed in any one of claims 1-6, further comprising:

a first shielding piece (6f) arranged between the front material plate (2f) and a screen front plate (5f) of the vibrating screen (H); the first screen (6f) is a flexible member having an extension margin for the vibrating screen (H) to vibrate reciprocally.

8. Front sealing structure of a vibrating screen according to claim 7, characterized in that the width of the first screen (6f) is not smaller than the width of the screening surface of the vibrating screen (H).

9. The front seal structure of a shaker screen of claim 7, further comprising:

and one end of the second shielding piece (7f) is fixed at one end, facing the vibrating screen (H), of the front material plate (2f), and the other end of the second shielding piece is a free end and naturally droops to the screen surface of the vibrating screen (H).

10. Front sealing structure of a vibrating screen, according to claim 9, characterized in that said first and second screens (6f, 7f) are made of canvas.