JPS5817605Y2 - Sludge scraper chain slack detection device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a chain loosening detection device for a sludge scraper in a settling tank or the like. Conventionally, such a sludge scraper has a pair of left and right chains (1) as shown in Fig. 1. (only one of which is shown in the figure) is suspended from a driving sprocket wheel 2 and a plurality of driven sprocket wheels 21, 22, 23 arranged at required positions, along the bottom of the sedimentation basin 3, and with the return side substantially at the water surface. A flight 4 made of wood or the like is attached to the chain 1, and the flight collects the sludge deposited on the pond bottom side toward the sludge discharge device 5 side, and the return side along the water surface. In this method, the scum floating up by the flight 4 is pushed toward the scum skimmer 6 side.

In this case, in order to move the flight 4 on the return side along the water surface, the flight runs along the rail 7.

However, during use, the length of the above-mentioned chino 1 increases due to wear of the connecting pin, etc. This elongation causes the drive sprocket 2 to become caught in the chino 1, pushing the chino 1 downward, which causes the flight 4 to run along the rail 7. may be pulled downward and damaged, or the chino 1 itself may be cut.

In view of this, the present invention is designed to automatically detect the elongation of the chino and prevent the chino from being cut or the flight to be damaged, and will be described below based on embodiments shown in the drawings.

In FIG. 1, the rear upper driven sprocket 21 of the sedimentation basin 3 is rotatably supported on one end of the detection arm 8 via a shaft 81, and the detection arm 8 is pivoted to the side wall of the sedimentation basin. It is provided so that it can swing through.

A counterweight 9 is provided at the other end of the detection arm 8 so as to face the driven sprocket 21, and the amount of weight is determined so that a balance can be achieved using the shaft 82 as a fulcrum when the chain 1 is properly tensioned.

A detection rod 10 is provided protruding from the mounting portion of the counterweight 9 of the detection arm, and is freely retractable from a pond wall through-hole on the detection arm, so that the protrusion and retraction of the detection rod can be identified from above the oil.

In other words, when the chain 1 becomes slack, the detection arm 8 uses the shaft 82 as a fulcrum, raises on the driven sprocket side, lowers the counterweight side, and lowers the detection arm protruding from it, making it easy to remove the chain on oil. It is possible to determine the slackness of the

It is possible to accurately adjust the tension of the cheno.

Thus, according to the present invention, the driven sprocket 21 on the rear upper side of the pond is pivotally supported by the detection arm 8 so as to be able to swing freely, and the balance is maintained with a weight, and the detection iron protruding from the detection arm is retracted to prevent the oil from rising. It has the effect of easily and reliably detecting slack in the chain.

[Brief explanation of the drawing]

Figure 1 is a front view of the sedimentation tank, and Figure 2 is a front view of the main parts. 1... Sedimentation basin, 2... Drive sprocket foil, 21.22, 23... Driven sprocket foil, 4... Flight, 8...・・・
Detection arm, 9...Counterweight, 10
...Detection rod.

Claims (1)

[Scope of utility model registration request] In a sludge scraping machine, a chain with a scraping flight attached is stretched between the driving sprocket wheel and a driven sprocket wheel arranged at a predetermined position, and the chain is rotated to scrape up sludge and floating matter. A rear upper side driven sprocket wheel is provided on the other end of a detection arm which is equipped with a balance weight at one end, and this detection arm is pivotably supported on a part of the sedimentation basin, and a driven sprocket provided on the detection arm. In order to balance the tension of the chain and the counterweight mentioned above, a detection rod is provided on the detection arm so as to protrude above the oil, and the amount of the protrusion of the detection rod that protrudes above the oil is used to control the tension of the chain. Sludge scraper chain slack detection device that can detect slack.