JP3084169B2 - Resin chain for collecting sludge - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin chain for scraping sludge used in a sedimentation pond in a sewage treatment plant or a sewage treatment plant, for example, among water treatment facilities.

[0002]

2. Description of the Related Art Metal chains are conventionally used as a chain used to scrape sludge in a sedimentation basin in a sewage treatment plant or a sewage treatment facility as described above. From the viewpoint of corrosion resistance and energy saving, resin-made ones are increasingly used.

[0003] Various engineering plastics are employed as materials for such resin chains, and the chains are manufactured by injection molding. The chain 1 is shown in FIG.
As shown in (a), the chain is composed of a chain body 1a and a pin 1b, and a chain barrel portion 1c of the chain body 1a.
Are connected by penetrating the pin 1b. Although not shown, one of the dozens of chains has an attachment, but the main shape of the chain main body 1a is the same.

[0004]

Since this type of resin chain is used in sewage, sand and solid particles floating in the sewage or adhering to the chain during use of the resin chain,
Often it is caught between the pin and the chain barrel of the chain body.

The chain body and the pin may be made of engineering plastics of the same material or engineering plastics of different materials. However, the engagement of the sand or the like as described above may cause the outer periphery of the pin or the inside of the chain barrel to become entangled. The circumference will be significantly worn, and if left as it is, it will lead to accidents such as breakage.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the conventional resin chains, and provides a resin chain for scraping sludge which can reduce wear of the chains due to biting of sand or the like. It is intended to do so.

[0007]

In order to achieve the above-mentioned object, a resin chain for scraping sludge of the present invention is a resin chain for immersing in sludge to scrape sludge. A groove for releasing minute solids or a groove for releasing minute solids from at least one end of the pin from the outer periphery of the pin to at least one end of the pin is provided at a required position of the outer periphery of the pin, and at least one minute communicating with the groove from one end face of the pin. A hole for releasing solids is provided, or, instead of the groove and the hole communicating therewith, a groove for releasing fine solids from a required position on the outer periphery of the pin to at least one end of the pin is provided. It is.

[0008]

In the sludge scraping resin chain of the present invention, fine solids such as sand caught between the pin and the chain barrel are removed from the groove between the pin and the chain barrel through the groove or the hole or the groove. From the outside.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a sludge scraping resin chain according to the present invention will be described with reference to the embodiments shown in FIGS. FIG. 1 is a view showing a first embodiment of the resin chain of the present invention,
(A) is a plan view of a resin chain, (b) is a front view showing a first embodiment of a pin, (c) is a bb cross-sectional view of (b) of FIG.
FIGS. 2A to 2C are front views showing second to fourth embodiments of the pin.

According to the present invention, a pin 1b constituting the chain 1 is provided.
At the required position of the outer periphery, that is, at a required position or within a required range in the fitting portion between the pin 1b and the chain barrel portion 1c, the groove 2 for releasing minute solids and the groove 2 from one end face of the pin 1b. Hole 3 for escape of minute solids
Is provided.

1 (b) and 1 (c), a groove 2 is provided substantially at the center of the above-described fitting portion, and a hole for releasing minute solid matter communicating with the groove 2 from one end face of the pin 1b. 2, (a) in FIG. 2 is provided with a spiral groove 2a in a required area in the fitting portion instead of the groove 2 shown in FIG. 1, and (b) is a groove 2 shown in FIG. In place of the pin 1b, a vertical groove 2b for escaping minute solids from a required outer peripheral position of the fitting portion to one end of the pin 1b is provided. (C) is a groove 2b similar to (b). In addition, three grooves 2 similar to those shown in FIG. 1 are provided in the fitting portion, and holes 3 communicating with one end face of the pin 1b are provided in these three grooves 2.

The size of the grooves 2, 2 a, 2 b and the holes 3 is such that fine solids such as sand are
Any size may be used as long as it can be removed from the fitting portion to the outside through the fitting portion. In addition, FIG. 2B shows the case where both the groove 2b and the hole 3 are provided, but it goes without saying that only the groove 2b may be provided.

[0013]

As described above, in the resin chain of the present invention, fine solid matter such as sand caught between the pin and the chain barrel is not allowed to pass through the groove and the hole, or through the groove, to the pin. Since the pin is removed from between the chain barrel and the outside, the wear of the pin is reduced and the number of times of replacing the pin is reduced.

Therefore, the cost can be reduced, and at the same time, the time for replacing the pins is reduced, so that the working efficiency is improved.

[Brief description of the drawings]

1A and 1B are diagrams showing a first embodiment of a resin chain according to the present invention, wherein FIG. 1A is a plan view of the resin chain, FIG. 1B is a front view showing a first embodiment of the pin, and FIG. 3 is a sectional view taken along line bb in FIG.

FIGS. 2A to 2C are front views showing second to fourth embodiments of the pin.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Chain 1b Pin 1c Chain / barrel part 2 Groove 2a Groove 2b Groove 3 Hole

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Masaki Ishikawa 5-3-28 Nishikujo, Konohana-ku, Osaka-shi, Osaka Inside Hitachi Zosen Corporation (72) Inventor Yoshio Sawa 17th Nihonbashi Koamicho, Chuo-ku, Tokyo No. 9 Inside Ataka Industry Co., Ltd. (72) Inventor Toshinori Wada 17-9, Nihonbashi Koami-cho, Chuo-ku, Tokyo Inside Ataka Industry Co., Ltd. (72) Inventor Yoshikazu Nakagawa 1200 New Fukumitsu Dosei, Nishitonami-gun, Toyama Prefecture in photosynthesis Co., Ltd. (72) inventor Atsushi Kaneko Toyama Prefecture Nishitonami County Fukumitsu Habushin 1200 address three photosynthesis within Co., Ltd. (58) investigated the field (Int.Cl. ^7, DB name) B01D 21/18 ZAB WPI (DIALOG)

Claims (2)

(57) [Claims] 1. A resin chain immersed in sewage to scrape sludge, wherein a groove for discharging minute solids or at least one end of the pin is located at a required position on the outer periphery of a pin constituting the chain. A resin groove for scraping sludge, wherein a groove for releasing fine solids is provided, and a hole for releasing fine solids communicating with the groove from at least one end face of the pin is provided. 2. Instead of the groove and the hole communicating therewith,
A resin chain for scraping sludge, wherein a groove for releasing minute solids from a required position on the outer periphery of the pin to at least one end of the pin is provided.