JPH0761803B2 - Water treatment machine - Google Patents

Description

TECHNICAL FIELD The present invention relates to a water treatment machine installed in a clean water treatment facility, a sewage treatment facility, or the like, and in particular, a shoe used for a sliding portion of a bucket conveyor thereof. It is about.

(Prior Art) Conventionally, in order to increase the wear resistance of the shoe body, which is the portion that slides on the rail of the shoe, this is made of metal, and the surface layer portion on the sliding contact surface side of the shoe body is It has been practiced to heat treat and cure to form wear resistant means. Further, there is known a structure in which guide ribs are provided so as to be opposed to the side surface of a rail which is a sliding contact member on a side portion of the shoe body to prevent the shoe body from falling off the rail.

(Problems to be solved by the invention) However, since such equipment is configured by combining a rail installed in the field work and a bucket conveyor manufactured in the factory, the relative position between them is accurately determined. It wasn't easy to make. Specifically, it is very difficult to obtain the parallelism between the chain that drives the rail and the bucket and the rail that guides the bucket with high accuracy. And
If the parallelism of them deviates, the gap between the guide rib projecting on the side of the shoe body and the rail becomes too large, causing creaking between the guided shoe and the rail, and vice versa. Then, the guide rib and the rail came into contact with each other to generate noise.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides a bucket guided by a chain with a shoe guided by a rail, and a sliding contact surface of a shoe body constituting the shoe. Wearing means that is relatively easy to wear is provided in the surface layer portion on the side, and wear resistant means made of either iron or ceramic is embedded in the inner layer portion on the sliding contact surface side.

(Operation) When the assembled water treatment machine is operated and the shoe slides on the rail, the surface layer portion on the sliding contact surface side of the shoe body is worn and dented relatively quickly at the portion in contact with the rail. A groove with a depth equal to the thickness of This groove will then act as a guide groove and the shoe body will be guided by the side walls of the groove and will be steady. After the surface layer portion is scraped off, the inner layer portion having abrasion resistance is exposed, and thereafter, the inner layer portion is brought into sliding contact with the rail.

(Example) Hereinafter, the Example of this invention is described based on drawing.

First, in the drawings, FIG. 1 is a sectional view of a main part of a water treatment machine showing an embodiment of the present invention, FIG. 2 is a sectional view taken along the line II-II, and FIG. 4 and 5 are IV-IV and VV sectional views of FIG. 3, FIG. 6 is a sectional view corresponding to FIG. 5 showing another embodiment, and FIG. 7 is still another embodiment. It is sectional drawing equivalent to FIG.

In FIG. 1, reference numeral 1 is a rectangular tubular water layer extending horizontally, and a bucket conveyor 3 is provided in the water tank 1.

The bucket conveyor 3 has a plurality of sprocket support shafts 4 arranged at the bottom and the top of the water tank 1 so as to be spaced apart from each other in the longitudinal direction.

Each of the sprocket support shafts 4 extends in the width (left and right in the figure) direction of the water tank 1, and a pair of sprockets 5 and 6 are attached to both ends thereof.

Further, a pair of chains 7.8 are wound around each pair of sprockets 5 and 6, and a large number of buckets 9 extending in the width direction of the water tank 1 are locked to the chains 7 and 8 at both ends thereof. .

Then, by rotating the chains 7 and 8 via the sprockets 5 and 6, the bucket 9 is moved in the longitudinal direction along the bottom surface 2 of the water tank 1, and then moved upward.
The water tank 1 is rotated so as to be inverted so that the precipitate accumulated on the bottom surface of the water tank 1 is removed to the outside of the water tank 1.

Rails 10 and 11 guide the bucket 9. The rails 10 and 11 are arranged on the bottom surface 2 and the upper portion of the water tank 1 so as to extend in the longitudinal direction of the water tank 1 at positions corresponding to both ends of the bucket 9.

Here, a shoe 14, which is a feature of the present invention, is attached to the sliding contact portion of the bucket 9 with each of the rails 10 and 11.

That is, as shown in FIG. 2, shoe mounting bases 12 and 13 bent in an L shape are welded and fixed to the upper and lower surfaces of the bucket 9 corresponding to the rails 10 (11), and their mounting surfaces 12a and 13a are fixed. The bucket 9 is made to extend at a right angle to the opening surface 9a on the front side of the bucket 9, and the shoes 14 having the same structure are bolted to the mounting surfaces 12a and 13a, respectively.
Fix with 17.

The shoe 14 is formed by embedding a sliding contact piece 16 made of ceramic or surface-hardened cast steel in a shoe main body 15 made of resin.

That is, as shown in FIGS. 3 to 5, the shoe body 15 is
Formed in a square and plate shape, and on its sliding contact surface side,
A guide rib 15a protruding outward in the thickness direction is formed at one edge portion.

The surface layer portion 15b on the sliding contact surface side of the shoe body 14 is formed of a resin of the same material as that of the shoe body 14 to reduce the wear resistance of the surface layer portion 15b.

Further, the inside of the surface layer portion 15b, that is, the inner layer portion 15c on the sliding contact surface side.
A pair of sliding contact pieces 16 formed of a ceramic material in the shape of an elongated prism are embedded in a part thereof to improve wear resistance.

The sliding contact piece 16 extends in a direction orthogonal to the guide rib 15a at both ends of the guide rib 15a described above, that is, extends in a direction orthogonal to the extending direction of the rails 10 and 11 to form the inner layer portion 15c. Buried inside.

In FIGS. 3 and 5, 15d is a bolt hole penetratingly formed in the shoe body 15 in the thickness direction.

In the shoe 14 configured as described above, the guide rib 15a is arranged so as to be parallel to the rail 10 (11), the bolt 17 is inserted into the bolt hole 15d, and the shoe 14 is fastened to a predetermined portion of the bucket 9. Fix it.

Next, the operation mode of the above embodiment will be described.

When the bucket 9 is rotated via the chains 7 and 8, the bucket 9 is moved forward along the bottom surface 2 of the aquarium 1 in the longitudinal direction thereof, and at this time, the sediment deposited on the bottom surface 2 is bucketed. It is housed in 9.

Next, the bucket 9 is lifted at the front part of the water tank 1 and then inverted above the water tank 1, whereby the bucket 9 is lifted.
The deposit contained therein is discharged from the bucket 9 above the water tank 1 and carried out to the outside by a conveyor (not shown) provided separately.

Next, the bucket 9 is moved toward the rear in the longitudinal direction at the upper portion of the water tank, and then is lowered and moved again along the bottom surface 2 of the water tank 1 to the front.

At this time, when the bucket 9 moves on the bottom surface 2 and the upper portion of the aquarium 1, as shown in FIG. 1, the shoes 14 provided on the upper and lower portions of the bucket 9 are connected to the lower rail 10 and the upper rail. Sliding on 11 and bucket 9 on each rail 10
You will be guided along line 11.

That is, when the bucket 9 moves excessively in the left-right direction in FIG.
It is prevented by abutting on the outer side of 1, and against the gravity load of the bucket 9, the surface layer portion 15 on the sliding surface side of the shoe 14
The b comes into contact with the rails 10 and 11 to direct the opening surface 9a of the bucket 9 in the traveling direction.

In this case, since the surface layer portion 15b of the shoe 14 is made of resin, the wear resistance is poor, the sliding contact portion with the rails 10 and 11 is locally worn, and the rail 10 is partially attached to the surface layer portion 15b.・ 11
The concave groove corresponding to the above, that is, the optimum guide groove corresponding to the on-site assembly is formed.

Further, when the sliding contact portion between the surface layer portion 15b and the pair of rails 10 and 11 is worn and disappears, the sliding contact piece 16 having high wear resistance embedded in the inner layer portion 15c is exposed, and this sliding contact piece 16 is Since it comes into sliding contact with the rails 10 and 11, the wear of the shoe body is minimized thereafter.

The shoe 14 according to the present invention, as shown in FIG.
The shoe main body 15 is formed of a metal material such as cast steel, and a plurality of recessed grooves 15e reaching the inner layer portion 15c from the surface layer portion 15b on the sliding contact surface side are formed in a direction orthogonal to the extending direction of the rails 10 and 11. Alternatively, the sliding contact piece 16 made of ceramic may be formed on the bottom of the groove 15e. By doing this, the sliding contact piece
16 can be attached to the shoe body 14 at low cost, and the groove 15e allows the rail 10 of the surface layer portion 15b to be attached.
It is possible to reduce the sliding contact area with 11 to reduce the wear resistance of the surface layer portion 15b and promote the formation of the guide groove of the shoe 14 by the rails 10 and 11.

Further, the shoe 14 according to the present invention, as shown in FIG.
The surface layer portion 15b of the shoe body 15 made of a metal material is formed of a resin material to reduce the wear resistance of the surface layer portion 15b, and the wear resistance sliding provided on the inner layer portion 15c by the surface layer portion 15b made of the resin material. The contact piece 16 may be covered.

(Effects of the Invention) As is clear from the above description, according to the present invention, the optimum guide groove corresponding to the sliding contact member is automatically formed in the surface layer portion of the shoe on the sliding contact surface side, and the shoe swings. Is regulated, the shoe slides smoothly with respect to the sliding contact member. Moreover, the inner layer portion on the side of the sliding contact surface, which is weak against impact and has wear resistance, is located inside the shoe and is protected.
This has the effect of preventing damage from obstacles during transportation or assembly.

[Brief description of drawings]

FIG. 1 is a sectional view of the essential parts of a water treatment machine showing an embodiment of the present invention,
2 is a sectional view taken along the line II-II, FIG. 3 is a plan view of a shoe attached to the bucket, and FIGS.
IV-IV and VV sectional drawing of a figure, Drawing 6 is a sectional view equivalent to Drawing 5 showing other examples, and Drawing 7 is a sectional view equivalent to Drawing 4 showing other examples. . 9: Bucket, 9a: Opening surface, 10/11: Rail, 12/13: Shoe mount, 12a / 13a: Mounting surface, 14: Shoe, 15: Shoe body, 15a: Guide rib, 15b: Surface layer part, 15c: Inner layer part, 16: Sliding contact piece.

Claims (2)

[Claims] 1. A bucket towed by a chain,
A shoe guided by a rail is provided, and a wear means that is relatively easily worn is provided on the surface layer portion of the shoe body constituting the shoe on the sliding contact surface side, and either an iron or a ceramic is provided on the inner layer portion on the sliding contact surface side. A shoe for a water treatment machine, characterized in that the wear-resistant means composed of the above is buried. 2. The wear means according to claim 1,
A shoe for a water treatment machine, characterized in that a concave groove is formed in a surface layer portion of the shoe body on a sliding contact surface side to reduce a contact area of the outer surface layer portion with a sliding contact member.