JPH091124A - Shoe in sewage treatment machine - Google Patents

Abstract

(57) [Summary] [Purpose] A high hardness metal with excellent wear resistance is integrally provided on the sliding surface with the rail so as to protrude from the bottom surface of the shoe in the form of a weld bead to eliminate sand accumulated on the rail. At the same time, the life of rails and shoes, which are heavily worn, is improved. [Structure] In a shoe 4 used in a sewage treatment machine, a high-hardness metal 41 is integrally provided in a portion of a shoe body that slides with a rail provided on a bottom surface of a pond so as to protrude from a shoe lower surface in a weld bead shape.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewage treatment machine such as a sand lifter, a sludge attractor, a flight conveyor, and the like. The present invention relates to a shoe in a sewage treatment machine, which is integrally provided in a weld bead shape so as to project from the lower surface of the shoe and suppresses wear of the shoe by a simple method.

[0002]

2. Description of the Related Art In a sewage treatment process, a large amount of sand particles is mixed in a treatment tank provided with a sanding machine, a flight conveyor, a sludge scraping machine and the like which are located relatively in the first half. Then, the bucket, flight conveyor, and sludge attractor flight of the sand lifter perform the desired work by sliding along the longitudinal direction of the pond while supporting the load on rails laid on the bottom of the pond. . When this bucket, flight, etc. slides on the rail, a shoe is attached to the sliding part in contact with the rail so that the bucket, flight, etc. do not wear directly due to the sliding friction, and this shoe can be replaced so that the bucket, flight, etc. It is designed to have abrasion resistance during flight.

[0003]

The material used for the shoe is ordinary cast iron (FC20) to spheroidal graphite cast iron (FCD60) having good wear resistance.
However, even if a conventional shoe attached to a bucket, flight, etc. is made of wear resistant one, it is in surface contact with a rail made of a metal material having a hardness higher than that of the shoe. Since it cannot be removed and slides with sand sandwiched between the rail and shoe, both the rail and shoe are rubbed by the high hardness sand contained in this sand, causing severe shoe wear. This shoe often needs to be replaced. Further, there is a drawback in that a rail made of a metal material having a high hardness with sand sandwiched between the rail and the shoe causes severe wear.

The present invention is a welding bead made of a high hardness metal having excellent wear resistance only on a sliding surface with a rail on the body of a shoe in a sewage treatment machine used after sand treatment such as a sand lifter and a sludge scraper. It aims to improve the life of the rail and the shoe, which are severely worn, while being integrally provided so as to project from the bottom surface of the shoe to remove the sand accumulated on the rail.

[0005]

The present invention has been made to achieve the above object, and in a shoe used in a sewage treatment machine, a portion of the shoe body that slides with a rail provided on the bottom of the pond has high hardness. Welding bead is integrally provided so as to protrude from the lower surface of the shoe, or a shoe in which this high hardness metal is integrally provided in a welding bead is a shoe of a flight or bucket at predetermined intervals of a sewage treatment machine. The point is that it is provided only in.

[0006]

[Operation] A shoe that is provided on the sliding part of the sand such as the bucket of a sand lifter and the flight of a sludge scraper is designed to eliminate the sand accumulated on the rail on the contact surface with the rail. Since the shoes are integrated into a weld bead and integrated with each other, when the shoe slides on the rail tread surface, sand accumulated on the rail is removed toward the rail side, and wear of the shoe and the rail is reduced. Further, the bead has excellent wear resistance, and since only the bead portion is in contact with the rail, the life of the shoe is improved.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A shoe for a sewage treatment machine of the present invention will be described below with reference to the illustrated embodiment. The embodiment shown in FIGS. 5 to 8 is the sand lifter A, but this can also be applied to the embodiment of the dirty sand scraper (not shown). In the figure, 1 is a water tank or a sand basin, in which a bottom 2 of the sand sander is stretched endlessly along the water surface in the longitudinal direction thereof.
A bucket 3 is attached to the chain at required intervals, the bucket 3 is moved along the bottom, the dirty sand settled at the bottom is taken out, and is scooped up and discharged. Then, in the sand lifter A, the shoes 4 are attached to the sliding surface with the rails to prevent the buckets from being worn when the buckets 3 slide and move on the rails 5 laid on the bottom surface of the water tank.

The shoe 4 can have various shapes as shown in FIGS. The shoe 4 is composed of a flat shoe body 40 and a weld bead-shaped high hardness metal 41 provided on the sliding surface of the rail 5. The shoe main body 40 has a required size and shape suitable for mounting on the bucket 3 (or flight), and the material thereof is the same as that of conventional ones, such as ordinary cast iron to spheroidal graphite, or stainless steel. I shall.

Mounting flanges are integrally provided on both sides of the shoe main body 40, and the welding bead-like height is provided so as to project into the shoe main body 40 thicker than the mounting flange portion and further on the contact surface with the rail. The hardness metal 41 is integrally provided.

The weld bead-shaped high hardness metal 41
Is formed separately from the shoe main body 40 and further so as to protrude from the lower surface of the shoe main body. The shape of the weld bead-shaped high-hardness metal 41 is as shown in FIGS. Allow the sand deposited on top to be removed laterally of the rail.

3 is a view seen from the bottom of the shoe body, FIG. 4 is a side view thereof, and FIG. 4 (a) is welded so that the top portion is located at the center of the front edge side of the shoe body. The bead-shaped high-hardness metal 41 has a chevron shape, the figure (b) shows a double arrangement of this chevron, and the figure (c) shows a multiple arrangement. (D) shows a mountain array arranged in multiple rows, and (e) shows an octagon array. Further, FIG. 6 (f) shows a pair of two shoes which are obliquely arranged on the lower surface of the shoe and are arranged in different directions.

In this way, the weld bead-shaped high hardness metal 41
Is slanted from the front edge side toward the rear side with respect to the forward movement of the shoe, so that when the shoe slides on the rail tread, the deposits accumulated on the rail tread are reliably removed. It is a thing.

The shoes 4 thus formed can be attached to all buckets and flights provided in the endless chain. However, as shown in FIGS. 7 and 8, the shoes 4 are attached every predetermined number. You can also

Therefore, when the shoe of the present invention is attached to a flight or a bucket, when traveling on the rail, the sand accumulated on the rail is dropped by the weld bead-shaped high-hardness metal 41 on both the left and right sides of the rail to cause wear. As shown in FIG. 8, the amount of sand, which is the main cause of the decrease, gradually decreases. However, the contact area of the chute rail is reduced compared to surface contact, resulting in high surface pressure,
Since the weld bead-shaped high-hardness metal 41 that contacts the rail is a high-hardness material, wear is reduced despite high surface pressure.

When the shoes of the present invention are used for each of the determined numbers as shown in FIG. 7, the operating pitch is appropriately determined depending on the bead material of the shoes and the rail material.

[0016]

The shoe of the sewage treatment machine of the present invention is integrally formed on the contact surface with the rail so as to project in the form of a weld bead, so that wear of the shoe body can be reduced. The life of the shoe can be extended. Further, since the shoes having the weld bead-shaped high hardness metal are provided at regular intervals with respect to the bucket or the flight, there is an advantage that the wear of the rail can be reduced. The weld bead-shaped high-hardness metal provided on the bottom surface of the shoe body has a shape that eliminates sand, so the sand that has accumulated on the rail tread surface is automatically removed by simply sliding the shoe on the rail tread surface. It is possible to prevent wear of the shoe, the shoe and the rail.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a contact state between a shoe and a rail in a sewage treatment machine of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is an explanatory view seen from a bottom surface of a shoe having a different bead shape.

FIG. 4 is a side view of the same.

FIG. 5 is a front view showing an embodiment of a sand blasting machine.

FIG. 6 is a side view of the same.

FIG. 7 is a front view of a different second embodiment.

FIG. 8 is a side view of the same.

[Explanation of symbols]

 1 Water Tank 2 Chain 3 Bucket 4 Shoe 40 Shoe Body 41 Welded Bead-like Hard Metal 5 Rail A Sand Sander

Claims (3)

[Claims] 1. In a shoe used in a sewage treatment machine, a high hardness metal is integrally provided on a portion of a shoe body that slides with a rail provided on a bottom surface of a pond so as to protrude from a shoe lower surface in a weld bead shape. A shoe in a characteristic sewage treatment machine. 2. The sewage according to claim 1, wherein in a flight or bucket used in a sewage treatment machine, a high-hardness metal is integrally provided in a weld bead shape on a portion that slides with a rail only on shoes at predetermined intervals. Shoe in processing machine. 3. The shoe for a sewage treatment machine according to claim 1, wherein the weld bead-shaped high-hardness metal provided on a portion of the shoe that slides on the rail is formed in a shape that eliminates sand accumulated on the rail.