JPS61134411A - Automatic dust remover - Google Patents

Abstract

PURPOSE:To perform normal operation, by a method wherein a chain guide, serving to guide a chain at its upper part and having size larger than that of a sprocket, is located to the lower part of a dust remover, and the chain stretched by a chain press which can freely slew to the upper stream side. CONSTITUTION:A space, serving to absorb the stretching amount of a chain, is provided on the return side of a chain guide 8 by increasing the size of a guide part 8a at a lower part over than of driving wheel 5 at an upper part. Futher, a side path R1, to which the chain of the guide part 8a is to be housed, is increased, a side path R2, from which the chain outgoes, is decreased, and a tangential line angle alpha of the side path R1 is set to lower than 45 deg.. A chain press 11 is located in a space part above the side path R1, a poiter 13 for detecting an stretch amount is protruded at the forward end of a arm 12 pivotally secured to a frame 3 by means of a shaft P, and the result can be dislayed in a scale 14 mounted on the frame 3 side.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to an automatic removal I!4 with underwater wheels.

BACKGROUND ART AND PROBLEMS There are conventional automatic dust removers as shown in FIGS. 8 and 4. If there is a submersible foil in the water as shown in Fig. 8 fAl, when the chain is stretched, it is easy to detach the chain from the foil, causing wear of the foil and shaft, troubles with the oil supply system, etc., which requires maintenance effort, and furthermore. This has the disadvantage that debris such as sand, wood, etc. can get caught between the foil and the chain, damaging the foil or the chain.

In addition, as shown in Figure tB), there is a model in which a foil is used as a cheno guide instead of a remover foil, but this is because the cheno is sandwiched in the id along its entire length.
If the chenode stretches, there is no escape, and it may interfere with the bar screen or the chenos may interfere with each other, causing trouble. Also, the direction of the rake cannot be controlled, and even if a take-up is provided, it may not be possible to operate the appropriate amount at the right time. There are no indicators, and Cheno's tension control must rely on intuition.

Also, as shown in FIG. 8(B) or FIG. 4(A).

There is a model that uses an underwater foil and the chain guide has the same diameter as the upper foil, but with this method, when the chain is extended, the guide length and chain length differ, and if the chain becomes longer than the guide length in the chain guide, the chain guide will become longer than the guide length. As shown in Figure 4 [81], the rakes attached to the chino have different directions because they form a zigzag shape, which causes the rake to not mesh properly with the bar screen at the bottom.

Solution to the Problem In the present invention, the diameter of the lower guide is made larger than the diameter of the upper wheel so that even if the chain lengthens and its total length becomes longer than the length of the guide chain, it will not form a zigzag shape in the chain guide. Create a space, place a chain holder in this space, and narrow the chain guide facing this child engine holder, press the chain holder to adjust the amount of extension of the chain, and use the chain holder and narrowed chain guide 1 hot spring. This is an automatic dust remover that regulates the chain and allows the chain to escape by utilizing the vertical gravity of the rake and the chain to absorb the chain extension and continue normal operation. Provide photography.

EXAMPLES The present invention will be explained below based on practical examples shown in FIGS. 1, 2, 1%, and 6.

In the figure, l is a waterway or a pond, and the slab 2 above this waterway
A frame 8 of an automatic removal machine II is provided on the frame, and a drive wheel 5 driven by a drive device 4 is provided on this frame, and the slab 2 raked by a rake is placed on the slab.
- An unloading machine 6 is installed to discharge the sludge and the like.

In addition, a screen 11 of a desired width is arranged in the water channel 1 so as to block the water flow, and at the upstream side of both sides of this screen, an id 8 is arranged along the screen. death,
This chino has an id 8 and a chino 10 provided with a rake 9 on the drive wheel.

This Cheno Guide 8 is shown in Figure 6.

The main body part of the line-up chino guide connecting the upper drive wheel and the inferior guide part Sa is made thinner, and this thinner part, that is, the space created on the upstream side of the chino guide, is used as a space to absorb the amount of extension of the chino guide. And this guide part 81 (the lower part is the ID) has a large side diameter λl into which the chino is inserted.

By reducing the diameter R1 of the exit side of the cheno, the cheno can be reversed gently on the entry side to reduce wear, and at the same time it can be reversed quickly on the exit side, allowing the rake that fits into the chino to quickly turn around. The point where the screen begins to bite is set close to the bottom of the pond, that is, the screen residue can be scraped off with a rake even when the water level is low. Also, the tangent angle of the side diameter R1 where the vulgar guide enters = t
is smaller than 45 odd. This is because it is better to keep the angle smaller than 46 degrees due to the balance between the rake and the frictional resistance of the chain when the chain enters, so that the rake chain can slide in smoothly.

Furthermore, a chain holder 11 is disposed in a space above the side diameter R1 into which the chaino guide enters, and an arm 1 that is pivotally connected to the frame at an axis P is disposed on this chain holder. A pointer ls for detecting chain extension is provided at the tip of the chain, and the amount of chain extension is displayed on a scale 14 provided on the frame side.

When the chain 10 enters the reference line in its normal prone position without being stretched, and at B when it is stretched, the chain tension T is divided into W and F based on the force vector shown in Figure @6, and W is vertical. In other words, F acts in the direction of gravity. To help with this, a chain holder 11 is provided as shown in FIG. 1, and a weight 16 is thrown at the tip of the arm as necessary.

Since the chain presser rotates around the sleeve P, the amount of chain extension is displayed by a pointer provided at the end of the arm.

The part directly under the upper foil of the Cheno guide is wide enough for the reference chain line person to pass through, so that the +1 tan chain can easily come off from the foil, and there is enough space for the wiper to be installed, and the middle of the Cheno guide is set so that the amount of extension of the Cheno can be large. The return, gear chain, or rake should be as detailed as possible.

The diameter λ1 on the return side of the lower guide is large (to reduce wear, and on the load side from the reversing part, the cheno is sandwiched between the id. This prevents the cheno from coming off and prevents the rake from coming off due to obstacles on the bottom of the pond. , so that they are sandwiched from both sides so that they do not interfere with the screen and mesh normally.

In addition, the diameter λ2 on the load side of the vulgar guide is set to the minimum radius suitable for the chino in use, and the starting position of the scraper is lowered as much as possible to improve the efficiency of scraping up dirt at low water levels, so that the chino will not come off the guide. In order to prevent this, a square rail that matches the width of the ceno roller is provided, or a brim is used for the roller, and the brim is arranged in a staggered manner with one brim even for both sides.

Effects of the Invention According to the present invention, the diameter of the inferior foil is larger than that of the upper foil, the width of the middle of the chain guide is narrowed to create a place for the chain to hang, and a chain holder is provided to follow this. The pointer at the tip of the +1 link of the chain holder indicates the amount of extension of the chain, and the proper take-up operation can be controlled manually or with power, so it can always be operated normally, and /lil'11 items are omitted. This has the effect of omitting a lubrication device and reducing maintenance costs, and automatic take-up is achieved.

It has the effect of becoming a maintenance program 11-.

[Brief explanation of the drawing]

Figure 1 is an honest diagram, @Figure 2 is ll! First view, Figure 8. FIG. 4 is a known explanatory diagram, FIG. 6 is an explanatory diagram of the present invention, and FIG. 6 is a vector diagram. 1 is the waterway, 2 is the slab, and 8 is the frame. 4 is a drive device, 5 is a drive wheel, 6 is a carry-out machine, 7 is a pipe 11, and 8 is a ceno guide. 9 is a rake, 1G is a chain, 11 is a chain holder,
12 is the arm, ill is the pointer, 14 is the scale, 16 is the weight, and P is the axis. Patent applicant: Hitachi Kiden Kogyo Co., Ltd. Agent: Ike 1) Manfu Igai 1 person

Claims (1)

[Claims] In a dust remover that uses a rake attached to an endless chain to remove sludge caught on the screen of a waterway, a chain guide with a diameter larger than the diameter of the sprocket wheel that guides the chain at the top is installed at the bottom of the dust remover. An automatic dust remover characterized in that the chain is automatically tensioned by a swingable chain retainer on the upstream side of the waterway.