JPH0711046Y2 - Closing chute - Google Patents

Description

[Detailed Description of the Invention] "Industrial field of application" This invention is a throwing direction switching chute that selectively throws powder particles fed from above into a hopper or the like below by rotating a switching damper. It is about.

“Prior Art” Conventionally, as such a closing direction change chute,
The ones shown in Figures and 6 are known.

This is because the shaft 2 passes through the casing 1 near the branch point in the inverted Y-shaped casing 1 in which the charging port 1a is formed in the upper part and the bifurcating branch chutes 1b, 1b are formed in the lower part. It is horizontally movably mounted, and a cylindrical rotating shaft 3 is fitted on the shaft 2 and fixed by a pin or the like, and a rectangular flat blade plate having a thickness smaller than the outer diameter is provided on the outer periphery of the rotating shaft 3. 4, one end surface of which is fixed so as to be bilaterally symmetrical in a standing state in a side view. The rotary shaft 3 and the vane plate 4 constitute a switching damper 5. The shaft 2 is driven by a rotary driving means such as a motor so that
In the drawing, the blade plate 4 of the switching damper 5 is rotated right and left by a predetermined angle.
Is rotatable left and right around the shaft 2.
The length of the vane plate 4 is dimensioned so that the tip of the vane plate 4 contacts the inner surface of the casing 1 when the vane plate 4 is rotated leftward or rightward. Further, the width is formed to be slightly narrower than the width between the inner surfaces of the casing 1, so that a gap a is provided between the side surface of the blade plate 4 and the inner surface of the casing 1 so that the blade plate 4 can rotate. Is provided.

In such a closing direction switching chute, when the shaft 2 is rotated to the right or left, the blade plate 4 of the switching damper 5 is rotated to the right or left around the shaft 2, whereby the tip of the blade plate 4 is moved. The path to one of the branch chutes 1b is closed by contacting the inner surface of the casing 1, and the powder or granules charged from the charging port 1a fall only to the other branch chute 1b.

[Problems to be solved by the invention] By the way, in the above-mentioned closing direction switching chute, since the rotary shaft 3 projects further outward from the extended surface of the surface of the blade plate 4, the rotary shaft 3 and the blades A recess is formed at the joint with the plate 4. For this reason, the powder particles falling from above are accumulated and left in this recess, and as a result, the powder particles are mixed with each other when used for other different kinds of powder particles. was there.

Further, there is a problem that the powder or granular material leaks from the gap a between the side surface of the blade plate 4 and the inner surface of the casing 1, and the powder or granular material falls on the branch chute 1b which is closed.

Further, when a particularly hard granular solid is dropped, there is a problem that the blade plate 4 is quickly worn by an impact and noise is generated.

Furthermore, there is a problem that the impact of the blade plate 4 coming into contact with the inner surface of the casing 1 not only wears the blade plate 4 but also shortens the service life of other members such as the casing 1 and the shaft 2. It was

This invention was made for the purpose of solving the above problems.

[Means for Solving the Problems] In order to achieve the above-mentioned object, a closing direction chute of the present invention has a changeover damper in which a mounting plate is attached to one end of a rotation shaft rotatably mounted on a casing. A damper main body having a fixed body, elastic members respectively arranged on both sides of a mounting plate of the damper main body, and a vane plate provided on the outer surface of these elastic members for holding the elastic member together with the mounting plate. , The vane plates are arranged such that the rotation axis is located between the extension surfaces of their outer surfaces, and the elastic member is
The outer peripheral edge portion is provided so as to project outward from the outer peripheral edge portions of the mounting plate and the blade plate, and the blade plate is detachably mounted to the mounting plate. .

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

In FIGS. 1 and 2, reference numeral 11 denotes a casing, an inlet 11a is formed in an upper portion of the casing 11, and a bifurcated branch chute 11b, 1 is provided in a lower portion.
1b is formed and has a substantially inverted Y shape as a whole. In the vicinity of a branch point of the casing 11, a shaft 12 is rotatably provided horizontally through the casing 11. The shaft 12 is configured to be rotated in a forward or reverse direction by a predetermined angle by a rotation driving means (not shown) such as a motor.

Further, a cylindrical rotating shaft 13 is fitted around the outer periphery of the shaft 12 and is fixed by a pin or the like, so that the rotating shaft 13 is rotated integrally with the shaft 12. As shown in FIGS. 3 and 4, the rotary shaft 13 has a rectangular plate-shaped mounting plate whose thickness gradually decreases from the base end toward the tip.
The side surface 14a on the base end side is fixed by abutting the outer peripheral surface 13a of the rotating shaft 13 in a state where the side surface 14 is laterally symmetrical. Elastic members 15 made of, for example, a rectangular flat plate-shaped felt are arranged on both surfaces of the mounting plate 14, and a rectangular flat plate-shaped vane plate 16 is arranged outside the elastic members 15. The blade plate 16 is fixed to the mounting plate 14 by means of a countersunk bolt 17 which is inserted through the through hole 16a and the through hole 15a of the elastic member 15 and screwed into the female screw 14b of the mounting plate 14. Thus, the elastic member 15 and the blade plate 16 are detachably attached to the attachment plate 14.

Here, the blade plates 16 and 16 are arranged so that the rotating shaft 13 is located between the extended surfaces of the outer surfaces 16b and 16b. Further, the elastic member 15 has its upper edge portion and side edge portion attached to the mounting plate.
14 and the blade plate 16 are attached so as to project from the upper edge portion and the side edge portion, respectively. The width of the elastic member 15 is formed so that both side surfaces thereof can slide on the inner surface of the casing 11 (see FIG. 2). Further, as shown in FIG. 1, a concave portion 11c formed by bulging toward the outside is formed in a portion of the inner surface of the casing 11 where the upper edge portion of the blade plate 16 contacts. The length of the elastic member 15 is formed so as to be in contact with the inner surface of the recess 11c. Where the rotation axis
A damper body 18 is composed of 13 and the mounting plate 14, and a switching damper 19 is composed of the damper body 18, the elastic member 15 and the blade plate 16. In the closing direction switching chute configured as described above, when the shaft 12 is rotated counterclockwise in FIG. 1, the switching damper 19 slides both side end surfaces of the elastic member 15 onto the inner surface of the casing 11 while the shaft 12 rotates. Rotate counterclockwise about the outer surface of the blade 16 on the left side
The upper end of 16b is in contact with the inner surface of the left concave portion 11c of the casing 11, the upper end surfaces of the elastic members 15, 15 are in contact with each other, and the upper end surface of the right blade 16 is located in the concave portion 11c. As a result, the passage to the left branch chute 11b is blocked, and the powder or granules thrown in from the charging port 11a fall only to the right branch chute 11b.

On the contrary, when the shaft 12 is rotated clockwise, the switching damper 19 is rotated clockwise about the shaft 12 while sliding both end surfaces of the elastic member 15 on the inner surface of the casing 11, and the blade plate on the right side is rotated. The upper end of the outer surface 16b of 16 contacts the inner surface of the right recess 11c, the upper surfaces of the elastic members 15, 15 contact, and the upper end surface of the left blade 16 is located in the recess 11c. As a result, the passage to the right branch chute 11b is blocked, and the powdery particles fall only to the left branch chute.

In such a closing direction change chute, the blade plate 1
Since the rotary shaft 13 is located between the extended surfaces of the outer surfaces 16b and 16b of the reference numerals 6 and 16, no dent is formed, so that the falling powder and granules are all branched without depositing on the rotary shaft 13. shoot
It is thrown into 11b. As a result, even if used for different kinds of powdery particles, the powdery particles do not mix with each other.

Further, the outer peripheral edge portion of the elastic member 15 is attached to the mounting plate 14 and the blade plate 16.
Since the both end surfaces of the elastic member 15 are brought into contact with the inner surface of the casing 11, they are projected from the outer peripheral edge portion of the blade plate 16 and the casing 11 without impeding the rotation of the blade plate 16.
The gap between the inner surface and the inner surface of the can be sealed.

Further, since the blade plate 16 is attached via the elastic member 15, it is possible to reduce the impact when the powder or granular material falls on the blade plate 16, and it is possible to extend the service life of the blade plate 16. Also, noise can be reduced.

Furthermore, it is possible to reduce the wear of the vane plate 16 when the vane plate 16 comes into contact with the inner surface of the casing 11, and it is possible to improve the service life of other members such as the casing 11 and the shaft 12. In addition, there is an advantage that the blade plate 16 is firmly attached by the elastic force of the elastic member 15.

Furthermore, when the blade 16 is worn or cleaned,
Since the blade 16 is detachably attached,
Since only 16 can be replaced, maintenance is easy and running costs can be reduced. Moreover, even when it is used for a hard granular solid, for example, it is only necessary to replace the blade plate 16 with a wear resistant one, so it is not necessary to prepare several switching dampers according to the type of powder or granular material as in the conventional case. There are good advantages.

In addition, the casing 11 is provided with a bulging portion 11c, and the bulging portion 1c
Since the upper end of the blade 16 is brought into contact with the inner surface of 1c and the contact portion is located outside the vertical surface of the charging port 11a, the granular material does not fall directly to this contact portion, and therefore the seal is formed. The property is improved. Moreover, since the upper end of the elastic member 15 is also sealed, the sealing property is further improved.

In the above embodiment, the rotary shaft 13 is formed separately from the shaft 12, but it may be formed integrally.

[Advantage of Invention] As described above, in this invention, since no depression is formed between the outer surface of the blade and the rotating shaft, all of the falling powder particles are branched without accumulating. It is thrown into the shoot. Therefore, even if they are used for different kinds of powdery particles, they will not be mixed with each other.

Further, since the outer peripheral edge portion of the elastic member projects from the outer peripheral edge portion of the blade plate, it is possible to seal the gap between the blade plate and the inner surface of the casing without hindering the rotation of the blade plate.

Further, since the elastic member is interposed between the blade plate and the mounting plate, it is possible to extend the service life of the blade plate and reduce wear of the blade plate when the blade plate comes into contact with the inner surface of the casing. The service life of other members such as the casing can be improved, and noise can be reduced.

In addition, since the blade plate is detachably attached to the mounting plate, it is possible to replace only the blade plate when the blade plate is worn, so that running cost can be reduced and cleaning of the blade plate can be performed. Maintenance work becomes easy.

[Brief description of drawings]

1 to 4 are views showing an embodiment of the present invention, wherein FIG. 1 is a vertical sectional view, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, and FIG. FIG. 4 is a front view of the switching damper, and FIG. 4 is a sectional view taken along the line IV-IV in FIG. 5 and 6 are views showing a conventional example, FIG. 5 is a longitudinal sectional view, and FIG. 6 is a sectional view taken along the line VI-VI of FIG. 11 …… Casing, 11a …… Inlet, 11b …… Branch chute, 13 …… Rotating shaft, 13a …… Outer peripheral surface, 14 …… Mounting plate, 15
...... Elastic member, 16 ・ ・ ・ Vane plate, 16b …… Outer surface, 18 …… Damper body, 19 …… Switching damper.

Claims (1)

[Scope of utility model registration request] 1. A switching damper, which switches the flow to the branch chute, is rotated around a branch point in a casing having an inlet for powder particles formed in the upper part and a bifurcating branch chute formed in the lower part. In the closing direction switching chute movably provided, the switching damper includes a damper main body in which one end of a mounting plate is fixed to a rotating shaft horizontally rotatably mounted in the casing, and the mounting plate. Of the elastic members, and vane plates provided on the outer surfaces of the elastic members for sandwiching the elastic members together with the mounting plate. The vane plates are extended surfaces of their outer surfaces. The elastic member is disposed such that the rotating shaft is located between the elastic member and the elastic member, the outer peripheral edge portion of which is provided so as to project outward from the outer peripheral edge portions of the mounting plate and the vane plate. Board However, the closing direction chute is detachably attached to the attachment plate.