JP2000073334A - Eliminator for fibrous impurity contained in sewage water - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an eliminator for fibrous impurities contained in sewage water, making stable sewage treatment possible by automatically capturing and eliminating fibrous impurities contained in sewage water by a simple means. SOLUTION: A rope 4 fitted to the lower end of a weight 6 with its upper part formed in a conical tapered face is wound and lowered so as to be submerged in sewage water circulating in a water tank 1 and to eliminate fibrous impurities captured twining around the rope 4, and a fibrous impurity eliminating means 5 automatically opened due to the upper outer shape of the weight 6 by the ascent of the weight 6 is disposed in a wound position of the rope 4 above the water surface of an eliminator 2 for fibrous impurities contained in sewage water.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for removing fibrous contaminants contained in sewage, and more particularly to a simple means for removing fibrous contaminants such as hair contained in sewage flowing into a small-scale sewage treatment plant. And a device for automatically loosening and removing fibrous contaminants that are automatically caught in and entangled with the cords.

[0002]

2. Description of the Related Art Conventionally, sewage flowing into a sewage treatment plant includes:
In addition to lump-like degradable substances such as human waste and kitchen garbage, lump-like degradable substances such as plastic lump, wood chips, empty cans and the like, and fibrous refractory substances such as hair (in this specification, “fibrous contamination” In particular, in a small-scale sewage treatment plant, only a simple dust removing means for removing a lump of hardly decomposable substances among the substances contained in the sewage is installed. Did not.

[0003]

As the dust removing means, among the substances contained in the sewage flowing into the sewage treatment plant, lumps of hardly decomposable substances are captured and removed, and lumps of lumpy degradable substances are crushed. However, those configured to be introduced into the treatment tank together with the sewage are mainly used. However, this dust removing means cannot capture and remove the fibrous contaminants. In addition, there is a problem in that the entanglement with a sensor or a pump installed in a treatment tank or the like causes malfunction of the sensor or a decrease in the processing capacity of the pump, thereby hindering sewage treatment.

In order to address this problem, it is conceivable to use an extremely fine screen, for example, a screen having a mesh width of about 2 mm, as a screen as dust removing means. In this case, the dust removing means is used together with fibrous contaminants. Decomposable substances such as human dung and kitchen garbage are captured in large quantities as scum, and the captured scum is spoiled in dust removing means and the like, making it difficult to treat the scum hygienically.
Even with such a fine screen, fibrous impurities could not be completely removed.

In view of the above-mentioned problems of the conventional sewage treatment plant, the present invention performs stable sewage treatment by automatically capturing and removing fibrous impurities contained in sewage by simple means. It is an object of the present invention to provide a device for removing fibrous contaminants contained in sewage, which can be used.

[0006]

In order to achieve the above object, the present invention provides an apparatus for removing fibrous contaminants contained in sewage, in which a cable having a conical tapered upper surface attached to a lower end thereof is attached. In a device for removing fibrous contaminants contained in sewage which is wound up and down so as to be immersed in sewage circulating in a water tank to remove entangled and trapped fibrous contaminants in the water tank, At the winding position of the rope above the water surface, there is provided a means for removing fibrous contaminants which automatically expands due to the outer shape of the upper part of the weight when the weight rises.

In the apparatus for removing fibrous contaminants contained in sewage, when the weight is raised by winding up the rope, each claw piece of the removing means automatically expands. In operation, the removal of fibrous contaminants entangled with the cord can be automatically performed.

In this case, the means for removing fibrous contaminants is constituted by a plurality of openable and closable claw pieces surrounding the outer periphery of the cord, and a biasing member for biasing the claw pieces in a closing direction. And the lower end face of the claw piece is tapered, and when the claw piece is closed, the upper end of the lower end face of the claw piece abuts on the cable, and the opening diameter of the lower end of the lower end face is reduced by the conical tapered surface of the weight. It can be configured to be larger than the diameter of the upper end.

[0009] As a result, the fibrous contaminants entangled with the rope are loosened by the claw pieces only by winding up the rope with the weight attached to the tip, so that the fibrous contaminants are reliably removed from the rope. As the weight automatically passes through the removal means automatically and smoothly with the weight, the weight passes freely through the removal means, so that the rope is simply wound up and down, and it is entangled with the rope and captured. The fibrous impurities can be reliably and automatically removed.

[0010] The means for removing fibrous contaminants can be constituted by a plurality of openable and closable pawls surrounding the outer periphery of the cord and a power transmission mechanism for simultaneously opening and closing the plurality of pawls. .

[0011] Thus, the claws disposed so as to surround the outer periphery of the cable can be simultaneously opened and closed, so that no matter where the fibrous contaminants are entangled with the outer surface of the cable, the claw is surely loosened. In addition, a large-diameter weight can be smoothly passed, and automatic operation can be stably performed.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the apparatus for removing fibrous contaminants contained in sewage according to the present invention will be described below with reference to the drawings.

A sewage treatment facility of a sewage treatment plant to which the apparatus 2 for removing fibrous contaminants contained in sewage is applied includes various substances discharged from homes and the like, that is, lump-like substances such as human waste and kitchen garbage. In addition to degradable substances, wastewater containing lump-like degradable substances such as plastic lumps, wood chips, empty cans and the like, and hard-degradable substances such as hair flows in. For this reason, first, by a dust removal device equipped with a screen, among the substances contained in the sewage flowing into the sewage treatment plant, the lump-type hardly decomposable substances are captured and removed, and the lump-like degradable substances are crushed, The wastewater is introduced into the treatment tank 1 together with the sewage, and biological treatment or the like is performed in the treatment tank 1.

By the way, the sewage introduced into the treatment tank 1 includes degradable substances such as crushed human dung and kitchen waste,
It contains hardly decomposable substances such as hair, and this fibrous contaminant is entangled with the sensors and pumps installed in the processing tank 1, causing malfunctions of the sensors and a decrease in the processing capacity of the pumps, and the like. It was a factor causing trouble.

In order to capture and remove fibrous contaminants such as hair, the fibrous contaminant removing device 2 installed in the treatment tank 1 has a weight 6 attached to the lower end as shown in FIG. A rope 4 made of a flexible linear member such as a wire rope, a piano wire, or a synthetic resin thread, which is immersed in sewage flowing in the tank 1, and the rope 4 is placed above the treatment tank 1. Winding means 3 such as a winch drum for winding up
Removing means 5 for unraveling and removing fibrous contaminants G entangled and caught in the ropes 4 at the winding position of the ropes 4 above the water surface, and removing the fibrous contaminants loosened by the removing means 5 Cleaning nozzle 7 for spraying cleaning water to remove from cable 4
And a receiving chute 8 for receiving the removed fibrous contaminants and a dust receiver 9.

In this case, even if the weight 6 receives the flow of sewage circulating in the treatment tank 1, the rope 4 keeps a substantially vertical or nearly vertical state, and the rope 4 is immersed in the sewage. As shown in FIG. 1, the upper portion of the weight 6 is formed in a conical tapered surface 61 so that the fibrous impurities G which are entangled with the rope 4 and captured are formed.
Can be removed smoothly and reliably by the removing means 5. The diameter r of the upper end of the conical tapered surface 61 is larger than the diameter of the cord 4 and is below the claw piece 51 of the removing means 5 described later, as shown in an enlarged manner in FIG. The diameter is formed smaller than the opening diameter R at the lower end of the end face 51t.

The removing means 5, as shown in FIGS.
A plurality of, in this embodiment, four claw pieces 51 are supported on the main body frame F via a bracket B so as to be swingable, and the lower portion of each claw piece 51 is arranged as shown in FIG. , So as to surround the outer peripheral portion of the cable 4. A spring 52 constituting an urging member that urges each claw piece 51 in the closing direction is stretched between the base end side of each claw piece 51 and the main body frame F. The upper end of the lower end surface 51t of the piece 51 is brought into contact with the cable 4.

Further, the pawls 51 are connected via a power transmission mechanism so that the openable / closable pawls 51 open and close in conjunction with each other. This power transmission mechanism is not particularly limited. For example, as shown in FIG. 2, a shaft 53 provided on the base end side of each claw piece 51 is supported by the bracket B, and The gears 54, 54 are attached, and mesh with the bevel gears 54, 54 attached to the shaft 53 disposed on the base end side of the adjacent claw piece 51, so that any one of the claw pieces 51 is opened or closed. , All the other pawls 51 simultaneously pivot in the same direction via the bevel gear 54, and the pawls 51 open and close in conjunction with each other.

The lower end surface 51t of each claw piece 51 is shown in FIG.
As shown in (B), when the claw pieces 51 are closed, the upper end of the lower end surface 51t of each claw piece 51 is
And the opening diameter R of the lower end of the lower end surface 51t is formed to be larger than the diameter r of the upper end of the conical tapered surface of the weight 6 so that each claw piece 51 is attached to the spring 52. Even in a state where the outer peripheral surface of the cable 4 is pressed by the force and is closed,
The upper end of the tapered surface of the weight 6 that is raised by the winding of the cable 4 is inserted into the opening of the lower end surface 51t of the claw piece 51, and slides along the lower end surface 51t, so that each claw piece 51 is spring-loaded. It expands against the biasing force of 52, so that the weight 6 can pass through the removing means 5 without hindrance. In addition, since each claw piece 51 is formed in a plane V-shape, the weight 6 that has passed through the removing means 5 from the lower part to the upper part is lowered by its own weight at the time of its descent. Can open freely against the urging force of the spring 52 and pass freely.

As shown in FIG. 3, the washing nozzle 7 is located above the removing means 5 so that the washing water can be sprayed toward the claw 51 of the removing means 5 or the cable 4 in the removing means. After the fibrous impurities G entangled with the cable 4 are trapped and removed by the removing means 5, the fibrous impurities G are forcibly washed off with the washing water from the washing nozzle 7, and are located below the removing means 5. It is configured to be received by a receiving chute 8 arranged to be swingable and to be stored in a dust receiver 9.
In this case, the receiving chute 8 is swingably supported by the main body frame F so that the receiving chute 8 does not hit the cable 4 and the weight 6 when the receiving chute 8 is standing up, while it is tilted. It can be installed at a position below the removing means 5. Further, the swing operation of the receiving chute 8 is configured to be synchronized with the winding operation of the cable 4.

Next, the operation of the apparatus for removing fibrous contaminants contained in sewage will be described. First, when the winch drum 3 as a hoisting means is driven to lower the rope 4, the weight 6 attached to the lower end of the rope 4 descends into the treatment tank 1 by its own weight, and the circulated sewage water flows. At a predetermined depth with the cable 4. Thereby, when the sewage containing the fibrous impurities such as hair introduced into the treatment tank 1 circulates in the treatment tank 1, the fibrous impurities are hooked on the rope 4 immersed in the sewage. , Or can be captured in a tangled manner. Then, when a certain amount of fibrous contaminants is caught on the cable 4 or at a regular time, the drum 3 is driven to wind up the cable 4.

At this time, the fibrous contaminants G entangled with and caught by the cable 4 rise together with the cable 4 due to the winding of the cable 4, but some of them may slide down the surface of the cable 4 due to their own weight. is there. However, the fibrous impurities G that have fallen off are caught by the weight 6 and are prevented from further sliding down, and rise together with the cable 4 and the weight 6 to the position of the removing means 5. Then, at this position, each claw piece 51 of the removing means 5
Is closed as shown in FIGS. 1 and 2, the fibrous contaminants G adhering to the cord 4 are loosened at the lower end of the closed claw piece 51 and removed. Similarly, the massive fibrous contaminant G that has slid down along the rope 4 and is caught at the position of the weight 6 is displaced by the rise of the rope 4 to close the claw piece 5.
1 is loosened and removed at the lower end. Next, when the tip of the weight 6 reaches the lower end of the closed claw piece 51, FIG.
As shown in (B), the opening diameter R at the lower end of the lower end surface 51t.
Is formed so as to be larger than the diameter r of the upper end of the conical tapered surface of the weight 6, so that each claw piece 51 is pressed against the outer peripheral surface of the rope 4 by the biasing force of the spring 52 and closed. Even in the state, the upper end of the tapered surface of the weight 6 that is raised by the winding of the cable 4 is inserted into the opening of the lower end surface 51t of the claw piece 51, and slides along the lower end surface 51t. Each pawl 51 is expanded against the urging force of the spring 52 so that the weight 6 can pass through the removing means 5 without any trouble. At this time,
At the same time, the fibrous impurities G attached to the outer peripheral surface of the weight 6
Is loosened at the lower end of the claw piece 51 and removed.

When the weight 6 rises to the highest position due to the winding of the cable 4, the drum 3 is then rotated in the reverse direction to rotate the drum 4.
And the weight 6 is stopped at the standby position. In this case, since each claw piece 51 is formed in a plane V shape, the weight 6 that has passed through the removing means 5 from the lower part to the upper part is provided.
When the weight 6 passes, each claw piece 51 can be freely expanded by the weight of the weight 6 against the biasing force of the spring 52 and can pass freely. 51 is automatically brought into a closed state in contact with the outer peripheral surface of the cable 4 by the urging force of the spring 52.

The fibrous contaminants G thus loosened and removed by the removing means 5 are forcibly washed away by the washing water from the washing nozzle 7, and are removed.
Via a chute 8 that is swingably disposed below the
It is stored in the trash receptacle 9.

[0025]

According to the apparatus for removing fibrous contaminants contained in sewage of the present invention, when the weight is raised by winding up the rope, each claw of the removal means is automatically expanded. Automatically removes fibrous contaminants entangled in the cable by automatic operation by raising and lowering the strips, thereby entanglement of the fibrous contaminants with sensors, pumps, etc. installed in treatment tanks etc. In addition, it is possible to perform a stable sewage treatment by preventing a malfunction of the sensor and a decrease in the processing capacity of the pump.

Further, the means for removing fibrous contaminants comprises a plurality of openable and closable claw pieces surrounding the outer periphery of the cord, and a biasing member for biasing the claw pieces in a closing direction. The lower end surface of the piece is tapered, and when the claw piece is closed, the upper end of the lower end surface of the claw piece abuts on the cable, and the opening diameter of the lower end of the lower end surface is the upper end of the conical tapered surface of the weight. By configuring to be larger than the diameter, the fibrous contaminants trapped as they are entangled with the rope can be loosened with the claw pieces just by winding up the rope with the weight attached to the tip. , While being securely removed from the rope, the weight is automatically and smoothly expanded by the weight, and the weight freely passes through the removing means. , The fibrous contaminants entangled with the cable can be reliably and automatically removed.

[0027] Further, the means for removing fibrous impurities is constituted by a plurality of openable / closable claw pieces surrounding the outer periphery of the cord and a power transmission mechanism for simultaneously opening and closing the plurality of claw pieces. Each claw piece arranged so as to surround the outer periphery of the cord can be opened and closed at the same time, and even if fibrous impurities are entangled with any position on the outer periphery of the cord, it can be reliably loosened and removed. In addition, a large-diameter weight can be smoothly passed, and automatic operation can be stably performed.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the apparatus for removing fibrous contaminants contained in sewage of the present invention, in which (A) is a front view, (B) is a lower end portion of a nail piece (I part of (A)). Enlarged view, (C) is II of (B)
FIG. 2 is a sectional view taken along line II.

FIG. 2 is a plan view of the same.

FIG. 3 is a front view showing the entire form of the apparatus for removing fibrous impurities contained in sewage of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Treatment tank (water tank) 2 Removal device of fibrous impurities 3 Hoisting means 4 Cord 5 Removal means 51 Claw piece 52 Spring (biasing member) 53 Shaft 54 Power transmission mechanism (bevel gear) 6 Weight 7 Washing nozzle 8 Receiving Shoot 9 Receiving Garbage

Claims (3)

[Claims] 1. A rope attached to a lower end with a weight formed at the lower end thereof having a conical tapered surface is wound up and down so as to be immersed in sewage circulating in a water tank, and is entangled with the rope and captured. In a device for removing fibrous contaminants contained in sewage that removes fibrous contaminants, it automatically expands at the winding position of the rope above the water surface due to the outer shape of the upper part of the weight as the weight rises An apparatus for removing fibrous contaminants contained in sewage, comprising means for removing fibrous contaminants. 2. A method for removing fibrous contaminants, comprising a plurality of openable and closable claw pieces surrounding an outer peripheral portion of a cord, and a biasing member for biasing the claw pieces in a closing direction. The lower end surface of the piece is tapered, and when the claw piece is closed, the upper end of the lower end surface of the claw piece abuts on the cable, and the opening diameter of the lower end of the lower end surface is the upper end of the conical tapered surface of the weight. The apparatus for removing fibrous contaminants contained in sewage according to claim 1, wherein the apparatus is configured to be larger than the diameter. 3. The method according to claim 1, wherein the means for removing the fibrous contaminants comprises a plurality of openable and closable pawls surrounding the outer periphery of the cable and a power transmission mechanism for simultaneously opening and closing the plurality of pawls. The apparatus for removing fibrous impurities contained in sewage according to claim 1 or 2.