JPH0620745Y2 - Conveyor outlet structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a structure of a drop port provided in the middle of a conveyer for conveying powder particles or at the end of conveyance.

(Prior Art) In a mill or a feed storage silo, etc., for transporting a powder or granular material that is a product or a storage object manufactured in the plant from a predetermined place to another predetermined place,
A conveyor is typically arranged.

One of such conveyors is a scraper conveyor, which is a kind of chain conveyor in which a chain is equipped with a scraper (transport plate) for transportation as a transport means. In this scraper conveyor, as shown in FIG. 7, one chain (or two threads at both ends) of a chain 20 is endless in the longitudinal direction of the conveyor C (in FIG. 7, the transport side is the lower side, The return side is wound on the upper side), a flat slide bed B is formed at the bottom, and skirts (side walls) E are erected on both ends thereof, and the slide bed B and the skirts E on both sides. To the above-mentioned chain 20 located in the box-gutter-shaped transport casing R formed by
The scrapers S are attached to the chain 20 at appropriate pitches, and the scrapers S move on the surface of the slide bed B as the chains 20 travel, and the scrapers S are positioned in front of or above the slide beds B. The granular material is transported.

Then, at a target position of the scraper conveyor (hereinafter, also simply referred to as a conveyor) for transporting the powder or granules, an opening of a drop port is formed by notching the slide bed surface, and the transported powder or granules are removed from the drop port. It is configured to be dropped from the opening of the.

When there are a plurality of conveyance target positions, a plurality of the traps may be formed on one conveyor. In this case, the trap in the middle of the conveyor is provided with a freely openable gate plate (door). It has a gate structure, and when it is not used, the gate plate is closed, the upper surface of the gate plate is used as the slide bed surface, and the powdery particles can be conveyed also to the front side thereof.

The structure of the outlet A at this intermediate position is, specifically,
As shown in FIG. 8 which is a plan view, a rectangular opening 1 is provided in a plan view, and a Y-shaped chain receiving guide 6 ′ is provided in the opening 1 from the front side in the traveling direction with the slide bed B It is formed at a level lower than the upper surface by the plate thickness of the slide bed B, and is shown in FIG. 9 (V- in FIG. 8).
As shown in FIG. 8), below the chain receiving guide 6 ', at a right angle from one side of the opening 1 to the conveying direction X of the conveyor C (see FIG. 8). 9A and 9B, the opening 1 is closed by projecting in the same direction, and is retracted to form an opening 1a (see the dot dark area) below the Y-shaped chain receiving guide 6 ', as shown in FIG. Thus, the gate plate 2'is arranged.

In this outlet structure, the chain receiving guide 6 '
Is formed in the Y-shape as described above, so that the chain or scraper (not shown) at the front end of the opening 1 drops the powder or granular material accumulated on the chain receiving guide 6'below the opening. This is because it is taken into consideration to prevent the powdered fluid from remaining at the outlet.

(Problems to be solved by the invention) However, in the case of the outlet structure configured as described above, at least the plate thickness of the chain receiving guide is provided between the upper surface of the gate plate 2'and the upper surface of the slide bed B. Since a step is formed, the gate plate 2'is projected and the opening 1 is closed to convey the powder or granules forward, so that the powder or granules are collected in the opening 1a shown in FIG. When the 2'is retracted, the accumulated powder particles fall down from the opening 1. In such a case, when the powder or granular material to be transported is changed to the previous one, the powder or granular material remaining in the opening 1 previously transported is mixed into the next powder or granular material.

This kind of contamination of the conveyed product would impair the quality of the product or would make it unsuitable as feed, especially when the remaining granules are auxiliary materials (additives) such as antibiotics. Can be harmful to livestock and cannot be used as feed.

The present invention has been made in view of the above situation, and an object thereof is to provide a structure of a drop port provided in the middle of a conveyor for conveying powder or granular material or at the end of conveyance, which does not have the above-mentioned problems. To do.

(Means for Solving the Problem) In the conveyor outlet structure according to the present invention, a chain having a box-gutter-shaped transport casing is endlessly wound around a conveyor, and a scraper is provided at predetermined intervals of the chain. A conveyor provided with a gate plate attached to the opening provided at the bottom of the carrying casing in the middle of the conveyor or at the end of the carrying to project and retreat in a direction perpendicular to the carrying direction to open and close the opening. And a gate plate formed at one end of the opening, the opening being formed by opening the opening over the entire width of the slide bed surface of the conveyor casing of the conveyor. The gate plate and the second gate plate arranged at the other end of the opening are formed, and their upper surfaces project and retreat in a state of being flush with the slide bed surface of the conveyor. And the depth dimension of the first gate plate is wider than the width of the opening, and the tip of the first gate plate projects slightly from the one end of the opening in the most retracted state and the most protruding state. , The tip of the second gate plate is configured to project to the outside of the other end of the opening to close the opening, and the depth dimension of the second gate plate is set to be narrower than the width of the opening, and With the tip slightly protruding from the other end of the opening, and in the most retracted state,
Each state in which the leading end of the first gate plate comes into contact with the leading end of the first gate plate and retracts to the outside of the other end of the opening, and the first gate plate is most retracted and the second gate plate is most protruded The front end portion on the front side in the transport direction of the portion slightly protruding from the opening is cut out.

(Operation) Then, the present outlet structure configured as described above,
It works as follows.

That is, when the opening of the drop opening is open, the first and second gate plates slightly project at both ends of the opening, so that the scraper of the conveyor is supported at this part and the chain and scraper are smoothly moved. While the protruding part is cut out at the front end part in the conveying direction, the powdery fluid that is trying to accumulate on this protruding part as the scraper advances from this cutout part. It falls below the opening.

Therefore, in the state where the opening of the drop opening is open, all the powder and granules conveyed in the opening are dropped, and the powder and granules are not deposited on the drop.

Also, when the opening of the outlet is closed, the bottom surface of the conveyor casing of the conveyor and the top surfaces of the first and second gate plates are flush with each other, and the first gate plate projects in the direction perpendicular to the conveyance direction. Contact the second gate plate, and in this state, the first gate plate further projects in the direction perpendicular to the transport direction and
The gate plate retracts to close the opening.

Therefore, the tip of the first gate plate is closed in a state in which it projects from one end of the opening to the other end and further projects from the other end.
The opening is completely closed by the first gate plate so as to be flush with the slide bed.

For this reason, in the state where the opening is closed, the powder or granular material to be transported is transported very smoothly without dropping at this drop port and accumulating at all.

As a result, in the next transfer operation, when the first gate plate is retracted to open the opening of the drop opening, the powder particles that were previously transferred fall from the opening of the drop opening, and the next powder is discharged. It does not mix with the granules.

(Embodiment) FIG. 1 is a plan view of a trap structure according to an embodiment of the present invention, FIG. 2 is a front view of FIG. 1, and FIG. 3 is II of FIG.
FIG. 4 is a view taken in the direction of arrow II-II in FIG. 1, and FIG.
FIG. 3 is a view on arrow III-III, and FIG. 6 is a view on arrow IV-IV in FIG.

In the figure, reference numeral 1 is an opening of the outlet A, and this opening 1
Is formed by cutting out the slide bed B surface of the transport casing R of the conveyor C over the entire width.

The first gate plate 2A and the second gate plate 2A are provided on both sides of the opening 1.
As shown in FIG. 3, the gate plate 2B has its upper surface located at a level flush with the upper surface of the slide bed B of the conveyor C, and is perpendicular to the conveying direction X of the conveyor C (see FIG. 1). It is arranged so that it can project and retract.

As shown in FIGS. 2 and 3, the first gate plate 2A is attached to the cylinder rod of the first pneumatic cylinder 3A whose cylinder side is attached to the fixing member 21 (see FIG. 6). ), And is extended / retracted at a level flush with the slide bed B (see FIG. 1) by the expansion / contraction movement of the pneumatic cylinder 3A. That is, when the pneumatic cylinder 3A is contracted and the first gate plate 2A is most retracted (state of FIG. 1), as shown in FIG. 1, the scraper S of the conveyor C (see FIG. 7). 1) when projecting from the one end 1a of the opening 1 by a dimension 1 required to support the end portion of the above), and the pneumatic cylinder 3A is extended so that the first gate plate 2A is most projected. The other side end 1b of the illustrated opening 1
Therefore, it is configured so as to project at least to the position of entering the outside of the opening by the dimension l or more.

The second gate plate 2B is attached to the cylinder rod of the second pneumatic cylinder 3B whose cylinder side is attached to the fixing member 22, as shown in FIG.
By the expansion and contraction movement of 3B, it projects and retracts at a level flush with the slide bed B. That is, in order to support the end of the scraper S (see FIG. 7) of the conveyor C from the other side end 1b of the opening 1 as shown in FIG. 1 in the extended and most protruding state of the pneumatic cylinder 3B. The first cylinder plate 2A is protruded by a necessary dimension l, and when the pneumatic cylinder 3B is contracted and is most retracted, the tip of the opening is at least the side end of the first gate plate 2A so as to contact the tip of the first gate plate 2A. It is configured to retreat to a position in which the above dimension l is entered.

Then, the first gate plate 2A and the second gate plate 2B are
At the front end portion 2a of the opening 1 on the front side in the transport direction X, the opening 1
Is cut out to the same position as the side ends 1a, 1b of. That is, by making the notch in this way, the outlet A
When the opening 1 of the first opening is open, the first and second gate plates 2 are
A state is formed in which A and 2B do not protrude by the above dimension l.

Further, as shown in FIG. 1, the projecting / retracting movements of the first and second gate plates 2A and 2B are supported from below at the front end and the rear end of the opening 1 in the transport direction X. Support members 4 and 5 are provided. This support member 4, 5
The end 4a (5a) on the second gate plate 2B side is notched as shown in FIG. 3, so that it is located above the support members 4, 5 when the opening 1 of the outlet A is open. The accumulated powder particles can be dropped downward by the projecting movement of the first gate plate 2A.

Further, in the present embodiment, as shown in FIGS. 1 and 3, at the front end portion of the opening 1 on the front side in the transport direction X, the chain 20 (seventh portion) slightly slackened downward in the opening 1 is formed. (See figure)
Of the chain C of the conveyor C, which guides the same by lifting it to the surface of the slide bed B of the conveyor C.
However, the upper surface is provided at a position lower than the bottom surfaces of the gate plates 2A and 2B in terms of height. Also, this chain receiver 6
The upper surface portion of the front side of the conveyance direction X is obliquely angled so that the chain 20 (see FIG. 7) can smoothly abut.

Further, in this embodiment, as shown in FIG. 1 or FIG. 3, the seal member 7 is provided at the lower end of the seal member 7 at the outer side portion adjacent to the skirt E forming the side wall portion of the conveyor casing R of the conveyor C. The gate plate 2A or the second gate plate 2B is arranged in contact with the upper surface of the first or second gate plate 2A.
When the gate plates 2A, 2B move backward, powder particles are prevented from coming out of the transfer casing R of the conveyor C.
Although a hard felt is used as the seal member 7 in this embodiment, it may be made of a polymer such as urethane as long as it has the above-mentioned function.

Thus, the trap structure constructed as described above operates as follows.

That is, as shown in FIG. 1, the scraper S of the conveyor C is in a state in which the opening 1 of the outlet A is open.
(See FIG. 7) is the first and second gate plates 2A, 2B.
First and second projecting by a dimension l from the opening 1 of the
While being in contact with and supported by the edge portions of the gate plates 2A, 2B, they travel in the transport direction X, transport the powdery particles from the rear end side of the conveyor C and drop them into the opening 1 of the drop opening A. Then, although the particles are trying to be deposited on the portion projecting from the opening 1 by the dimension l, they are conveyed to the front end portion 2a of the opening 1 on the front side in the conveying direction by the scraper S (see FIG. 7), Since the tip portion 2a is notched as described above, it falls downward from there.

Therefore, the granular material conveyed from the rear end side is almost dropped from the opening 1 portion of the drop opening A.

In the state where the opening 1 is opened, the above-mentioned supporting members 4 and 5 are located below the slide bed B surface, so that on the supporting members 4 and 5, especially on the rear side of the opening 1. The powdery particles are deposited on the support member 4 located at.

However, when the conveyance of the powder or granular material of that type is completed or when the powder or granular material is conveyed by the conveyor to a portion further forward of the opening 1, the pneumatic cylinder 3A is extended to open the opening 1 of the drop opening A. Is closed by the first gate plate 2A, the edge of the first gate plate 2A pushes the powder or granular material accumulated on the supporting members 4 and 5 toward the second gate plate 2B, Ends 4a, 5a of the fourth and fifth gate plates 2B side (third gate plate 3B)
(See the figure) It will be dropped from the notched part.

Therefore, according to the present outlet structure, it becomes possible to prevent the powder or granular material being conveyed from accumulating at the opening of the outlet A at all.

Also, in the opening 1, the chain 20 (see FIG. 7)
Is supported from below by the first and second gate plates 2A, 2B via the scraper S (see FIG. 7) attached to the chain 20 (see FIG. 7) as described above. ,
The chain receiver 6 having the above-described structure is disposed at the front end portion of the opening 1 on the front side in the transport direction with almost no slack, and is lifted to the same height as the upper surface of the slide bed B adjacent to the opening 1. Therefore, the chain 20 can travel extremely smoothly in the rear portion of the opening 1.

(Advantage of the Invention) Since the conveyor outlet structure according to the present invention is configured and operates as described above, there is no possibility that the powder or granular material being conveyed accumulates at the opening of the outlet and remains after the transfer. Therefore, the powder particles conveyed before do not mix into the powder particles transferred later.

Therefore, even after being conveyed by this conveyor conveyance, the powdered fluid can be accurately maintained in the original mixing ratio, and therefore, the conveyor conveyance does not impair the quality of the product, and the conveyor does not Even special substances such as antibiotics that are used in a limited way can be transported on the conveyor with peace of mind.

[Brief description of drawings]

1 is a plan view of a trap structure according to an embodiment of the present invention, FIG. 2 is a front view of FIG. 1, and FIG. 3 is II of FIG.
FIG. 4 is a view taken in the direction of arrow II-II in FIG. 1, and FIG.
Figure III-III arrow view, Figure 6 is a IV-IV arrow view of Figure 1,
FIG. 7 is a perspective view having a cross section showing the structure of the scraper conveyor, FIG. 8 is a plan view showing the structure of the outlet of the scraper conveyor of FIG. 7, and FIG. 9 is a view taken along the line V-V of FIG. It is a figure. A: Drop port, B: Slide bed, C: Conveyor, R: Transport casing, S: Scraper, 1 ...
Aperture, 2A ... first gate plate, 2B ... second gate plate, 20
……chain.

Claims (1)

[Scope of utility model registration request] 1. A conveyor having a box-and-groove-shaped conveyor casing, in which a chain is wound endlessly in the longitudinal direction and scrapers are attached at predetermined intervals of the chain, and the conveyor casing is provided in the middle of the conveyor or at the end of the conveyor. The outlet structure of the conveyor is provided with a gate plate that opens and closes the opening by projecting and retracting in the direction perpendicular to the transport direction at the opening provided at the bottom of the conveyor. The gate plate is formed by opening the entire width of the slide bed surface of the transport casing in the width direction. The gate plate is a first gate plate provided at one end of the opening and a second gate plate provided at the other end of the opening. The gate plates are formed so that their upper surfaces are projected and retracted so as to be flush with the slide bed surface of the conveyor. In a wider configuration, the tip of the tip projects slightly from the one end of the opening in the most retracted state, and the tip of the tip projects to the outside of the other end of the opening in the most projected state to close the opening. The depth dimension of the second gate plate is configured to be narrower than the width of the opening, and in the most projecting state, the tip projects slightly from the other end of the opening, and the most retracted state,
Each state in which the leading end of the first gate plate comes into contact with the leading end of the first gate plate and retracts to the outside of the other end of the opening, and the first gate plate is most retracted and the second gate plate is most protruded In the conveyor outlet structure, a front end portion of the portion slightly projecting from the opening in the transport direction is cut out.