JPH11207204A - Chain type dust remover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely take up a carrier chain without raising the height of a machine. SOLUTION: In this dust remover, a rake for scraping up deposits on a screen face is fitted on a carrier chain 6 hung on sprocket wheels 4 and 5 provided on the top and the bottom of a water channel 2. In this case, a take-up wheel 10 for biassing the carrier chain in the downward path to the outer peripheral direction to separate it from the upward path and keeping the whole carrier chain 6 under tensed condition is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a chain type dust remover.

[0002]

2. Description of the Related Art Generally, a dust remover for removing suspended substances is installed at an intake of river water or seawater, an inlet of a sewage or wastewater treatment plant, or the like. For example, the chain type dust remover 1 shown in FIG. 3 is provided with a screen 3 in a direction crossing a water channel 2 (water intake or inflow port), and extends over sprocket wheels 4 and 5 arranged at the upper and lower portions of the water channel 2. The carrier chain 6 is extended, and a plurality of rakes 7 are
Is attached, and the carrier chain 6 is circulated and moved by the electric motor 8, so that the rake 7 scrapes up the deposits on the screen surface and drops the deposits onto the carry-out conveyor 9.

[0003]

In the above-described chain type dust remover, an appropriate amount of tension is always applied to the carrier chain 6 in order to reliably transmit the required power to the rake 7. It is necessary to take up the take-up function of the sprocket wheel 4 at the upper end.

However, in recent years, since the depth of a pond such as a receiving pond has become deep, the height of the dust remover 1 has to be increased, and the length of the carrier chain 6 has inevitably increased. Therefore, it is difficult to absorb the elongation of the carrier chain 6 only with the sprocket wheel 4. On the other hand, when the take-up margin is lengthened upward, there is also a problem that the machine height is further increased.

An object of the present invention is to solve the above-mentioned problem, and it is an object of the present invention to ensure that a carrier chain can be taken up without increasing the machine height.

[0006]

According to a first aspect of the present invention, there is provided a chain type dust remover which extends over a guide chain provided at an upper portion and a lower portion of a water channel. Then, in this carrier chain, in a chain-type dust remover in which a rake that scrapes up deposits on the screen surface is urged, the carrier chain on the downward path is urged in the outer circumferential direction separated from the carrier chain on the upward path,
A take-up wheel is provided to keep the entire carrier chain in tension.

The chain type dust remover according to claim 2 is
The take-up wheel is configured to be able to move back and forth with respect to the carrier chain by screwing means or weights provided between the take-up wheel and the fixed member.

According to a third aspect of the present invention, in the chain type dust remover, the upper guide means is configured to be able to move back and forth with respect to the carrier chain. According to the configuration of the first aspect, the carrier chain is urged by the take-up wheel, so that the expansion or loosening of the carrier chain can be absorbed. Deposits can be scraped off. At that time, the carrier chain on the downward road is urged away from the carrier chain on the upward road.
The length of the chain is not increased, maintenance is easy, and power is advantageous.

According to the second aspect of the present invention, the screwing means is adjusted appropriately or automatically by the weight.
The take-up wheel can be retracted relative to the carrier chain, so that the carrier chain can be easily adjusted to a moderate tension.

According to the third aspect of the present invention, the tension state of the carrier chain can be adjusted by moving the upper guide means back and forth with respect to the carrier chain.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. Since the chain type dust remover of this embodiment has substantially the same configuration as the conventional one described above with reference to FIG. 3, FIG.
Details will be described with reference to FIG.

The chain type dust remover 1 is provided with a screen 3 such as a bar screen in a direction crossing the water channel 2.
The carrier chain 6 is stretched over the sprocket wheels 4 and 5 arranged on the upper and lower sides of the carrier chain 6, and a plurality of rakes 7 are attached to the carrier chain 6. Reference numeral 8 denotes an electric motor that circulates and moves the carrier chain 6 in the direction indicated by the arrow, and 9 denotes an unloading conveyor.

Between the upper sprocket wheel 4 and the lower sprocket wheel 5 slidably contacts the inner peripheral side of the carrier chain 6 on the downward path, and urges the outer peripheral direction away from the upward path, that is, the upstream side. Take-up wheel 1
0 is provided.

The take-up wheel 10 supports a screw 13 screwed with a screw portion 12 provided on a casing 11 on the back side of the drawing, and is capable of moving back and forth with respect to the carrier chain 6 by rotation of the screw 13.

The operation of the above configuration will be described. The take-up wheel 10 is moved back and forth with respect to the carrier chain 6 by the screw 13 and is arranged at an appropriate position.
Adjust the whole to moderate tension.

In this state, the carrier chain 6 is circulated by the motor 8 so that the motor 8
Is reliably transmitted to the rake 7 via the carrier chain 6, and the rake 7 scrapes off the deposits on the screen surface on the upstream side of the screen 3 and drops it onto the carry-out conveyor 9 above the screen 3.

If the carrier chain 6 becomes loose due to elongation during operation, the take-up wheel 1 is rotated by the screw 13 in the same manner as described above.
0 is advanced toward the carrier chain 6 and is arranged at an appropriate position, so that the take-up wheel 10 urges the carrier chain 6 to the upstream side, thereby absorbing the slack, and the entire carrier chain 6 You are in a state of tension.

In such a take-up mechanism,
Since the machine height and chain machine length do not increase, maintenance is easy and power is advantageous. As shown in FIG. 2, instead of the screw 12, the take-up wheel 10 may be connected to a weight 15 suspended on a roller 14 provided diagonally above the take-up wheel. in this case,
An external force obliquely upward is applied to the take-up wheel 10 by the weight 15, and the take-up wheel 10 is automatically arranged at an appropriate position according to the slack of the carrier chain 6, absorbs the slack, and the entire carrier chain 6 To a moderate tension.

If the sprocket wheel 4 is configured to be vertically movable, the looseness of the carrier chain 6 can be absorbed by the sprocket wheel 4 as well. Depending on the length of the carrier chain 6, the take-up wheels 10 may be provided in multiple stages.

Further, even in a chain type dust remover provided with a guide rail instead of the lower sprocket wheel 5,
With the take-up wheel as described above, the carrier chain can be maintained in an appropriate tension state.

[0021]

As described above, according to the present invention, by providing a take-up wheel for urging the carrier chain on the downward path away from the carrier chain on the upward path, the machine height and the length of the chain machine are increased. Without increasing the height, the carrier chain can be maintained in a tensioned state, and the required power can be reliably transmitted to the rake, which facilitates maintenance and is advantageous in terms of power.

In addition, the take-up wheel is configured to be retractable by a screwing means or a weight, so that the tension of the carrier chain can be easily and appropriately adjusted.

Further, by configuring the upper guide means so as to be able to move back and forth with respect to the carrier chain, the tension state of the carrier chain can be adjusted also by the upper guide means.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a main configuration of a chain type dust remover according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a main configuration of a chain type dust remover according to another embodiment of the present invention.

FIG. 3 is an explanatory diagram showing an overall configuration of a conventional chain type dust remover.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Chain type dust remover 2 Waterway 4 Upper sprocket wheel 5 Lower sprocket wheel 6 Carrier chain 10 Take-up wheel 12 Screw part 13 Screw 15 Weight

Claims (3)

[Claims] 1. A chain type dust remover in which a carrier chain is stretched over guide means provided at an upper portion and a lower portion of a water channel, and a rake is attached to the carrier chain to scrape off substances adhering to a screen surface. A chain type dust remover, comprising: a take-up wheel for urging a carrier chain on a downward path in an outer peripheral direction away from a carrier chain on an upward path to maintain the entire carrier chain in a tensioned state. 2. The chain type dust remover according to claim 1, wherein the take-up wheel is configured to be able to move back and forth with respect to the carrier chain by a screwing means or a weight provided between the take-up wheel and the fixed member. Machine. 3. The chain type dust remover according to claim 1, wherein the upper guide means is configured to be able to move back and forth with respect to the carrier chain.