JP2951522B2 - Contaminant removal device for running water pipe - Google Patents

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 impurities contained in running water flowing through a water pipe.

[0002]

2. Description of the Related Art Generally, in a flowing water pipe, for example, a ductile cast iron pipe or the like, a mortar lining is provided on an inner surface of the pipe to prevent rust, so that the quality of water supplied to each household is guaranteed.

[0003]

However, in the above-mentioned prior art, in order to take out the branch pipe from the upstream of the water pipe as required, drilling work on this water pipe, and further cutting of the water pipe are required. Construction is performed. In these construction processes, metal powder is generated, and furthermore, a metal portion is exposed during drilling and cutting of the flowing water pipe, and rust is generated in this part, so there was a problem that these metal powder and rust powder flow in the flowing water pipe. .

The drilling and piping work is almost always performed underground, and sand and the like may enter the flowing water pipe, making it difficult to ensure water quality.

[0005] Therefore, an apparatus having a filter member for removing such contaminants in running water has been developed. However, if this device is used for a long time, the filter member will be clogged and the flow of water in the water pipe will be hindered. Therefore, it is necessary to periodically replace the filter member. This replacement operation has to be carried out by once stopping the flowing water in the flowing water pipe and disassembling the device, which is very troublesome.

SUMMARY OF THE INVENTION The present invention has been made in view of such problems, and removes foreign substances in the water pipe to ensure the quality of the water and to perform maintenance work extremely easily. An object of the present invention is to provide an apparatus for removing contaminants.

[0007]

Means for Solving the Problems At least a part of a cylindrical filter mesh is fixed in a case that covers a part of the water pipe, and a filter plate and an inner peripheral surface of the filter mesh are attached by a rotating shaft. A backwashing chamber is a foreign matter removing device that is in communication with the atmosphere via an on-off valve by a communication pipe, and is a communication that allows a discharge section located in a lower portion of the filter mesh to communicate with the communication pipe at a constant cycle. And a rotating blade rotatable with the separator in the discharge section.

[0008]

By opening the on-off valve and rotating the separator through the rotating shaft, water on the downstream side of the filter mesh flows into the backwashing chamber, and the entire peripheral surface of the filter mesh is backwashed. At the same time, the contaminants that have settled in the discharge section formed under the filter mesh are collected by the rotating blades, and when communicating with the discharge pipe and the discharge section at a constant cycle, the external part is appropriately opened and closed via the on-off valve. Will be released.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

[0010] As shown in FIG.
A substantially cylindrical case 2 composed of two members is fitted and fixed in a watertight manner. The axis of the substantially cylindrical case 2 extends substantially at right angles to the axis of the water pipe 1, and is mounted inside the case 2 so as to block the flowing water in the water pipe 1. 1 is provided with a filter member 4 having a cylindrical filter mesh 3 for capturing foreign substances caused by flowing water in the filter member 1. That is, the cylindrical filter member 4 constitutes the foreign matter capturing means.

As shown in FIG. 1, the filter member 4 has a hole 5 on its front surface for receiving impurities, a sealing member 6 on the upper edge, and a bottom plate 7 on the bottom surface. ing.

A discharge pipe 8 is mounted at the center of the bottom plate 7 so as to penetrate vertically, and a discharge hole 9 is formed at a predetermined position of the discharge pipe 8 extending inside the filter member 4. The bottom plate 7 and a discharge pipe 8 having a discharge hole 9 constitute a discharge section.

As shown in FIG. 2, the filter member 4 has a seal member 6 formed in the case 2 by an annular holding member 10 fixed to an inner wall of the case 2 and a bottom wall of the case 2. The discharge pipes 8 are fitted into the recesses 11 so as to be supported, respectively, and the case 2 is sealed so that the lid 12 presses the seal member 6 from above.

A discharge pipe 15 having an on-off valve 14 extends outward from a hole 13 formed in the concave portion 11 of the bottom wall of the case 2.

In the filter member 4, there is formed a backwashing chamber 17 which is rotatable about a rotating shaft 16 which forms a central axis thereof. The backwashing chamber 17 has two separators 19 and 19 ′ formed so that the backwash mouth 18 is open to the inner peripheral surface of the filter mesh 3, and a back and a bottom for sealing. It is sealed by a plate 20 and a support piece 21 abutting on the upper ends of the separators 19, 19 '. Support piece 21
Is connected to a mounting ring 23 mounted on the rotating shaft 16 via a bolt 22.

The backwashing chamber 17 communicates with a communication pipe 24 mounted coaxially below the rotary shaft 16 in the filter member 4. In addition, the lower part of the communication pipe 24 is rotatably supported by the concave portion 11 of the bottom wall of the case 2 and communicates with the discharge pipe 15, so that the backwashing chamber 17 is connected to the discharge pipe 15 via the communication pipe 24. Will be communicated.

The rotating shaft 16 and the communication pipe 24 are attached to a mounting ring 25 fixed on the upper plate of the communication pipe 24.
6 are fitted and connected via bolts 26. The upper end of the rotating shaft 16 extends through the lid 12 to the outside of the case 2.

Further, on the sealing plate 20 for sealing the bottom surface of the backwashing chamber 17, the rotating blades 27 cooperate with the backwashing chamber 17,
It is fixed so as to rotate on the bottom plate 7 in the discharge section.
Further, a communication hole 28 is formed in the communication pipe 24 near the rotary blade 27.

The filter member 4 configured as described above
Is installed in the case 2 so as to be freely loaded in the discharge pipe 8. The seal piece 29 shown in FIGS. 3 and 4 is for isolating the inflow side and the outflow side of the filter member 4 and is in contact with the outer peripheral surface of the filter member 4 over its entire height.

The operation of this embodiment will be described.
The flowing water flows from left to right as shown by an arrow P in FIG. 2, for example. At that time, since the flowing water flows through the inside of the cylindrical filter mesh 3 from the inside to the outside, impurities mixed in the flowing water are captured on the inner peripheral surface side of the filter mesh 3 and there. Deposits gradually. Further, impurities having a large specific gravity precipitate and are deposited on the upper surface of the bottom plate 7.

When the accumulation of the impurities progresses to some extent, the filter mesh 3 is clogged, and eventually the water flow in the water pipe 1 generates a large resistance that cannot be ignored. In this case, impurities can be removed from the filter mesh 3 by backwashing the filter member 4 in a water-free state.

That is, at the start of the backwash, the on-off valve 14 is first opened to open the backwash chamber 17 to the outside (mainly atmospheric pressure) via the communication pipe 24 and the discharge pipe 15. Will be. As a result, relatively high static pressure on the water pipe 1 side (ie, outside) and relatively low external pressure on the backwash chamber 17 side (ie, inside) act on the filter mesh 3 near the backwash port 18. Therefore, a backwashing action occurs based on the pressure difference.

At this time, as shown in FIGS. 2, 3A and 4A, the washed water passes through the communication pipe 24 from the backwashing chamber 17 and is discharged to the discharge pipe 15. Inflow. The backwashing chamber 1 is rotated via a rotary shaft 16 extending outside the case 2.
Since the backwash mouth 7 of 7 is rotated so as to move over the entire contaminant capturing area of the filter mesh 3, the inner surface of the filter mesh 3 is uniformly washed.

At the same time, by this rotation, the foreign substances deposited on the bottom plate 7 are collected so as to be swept by the rotating blades 27 rotating so as to contact the bottom plate 7 as shown in FIG. Can be

Eventually, as shown in FIG.
When the rotating blades 9, 19 'and the rotating blade 27 shown in FIG. 4B pass through the discharging hole 9, the discharging hole 9 and the communication hole 28 communicate with each other, and contaminants collected by the rotating blade 27 are collected. Is discharged into the communication pipe 24 and the on-off valve 1 of the discharge pipe 15
It is exhausted to the atmosphere via 4. Also, at this time, the running water from the inside of the backwashing chamber 17 continues.

Thus, the inner peripheral surface of the filter mesh 3
In addition, impurities accumulated on the upper surface of the bottom plate 7 are completely removed, and finally, the on-off valve 14 is closed to complete the backwashing operation.

FIGS. 5 and 6 show an apparatus for removing contaminants according to a second embodiment of the present invention. In this apparatus for removing contaminants, as shown in FIG. 5 in particular, the rotating blades 27 are out-of-phase with the
The communication hole 28 is formed near the rotary blade 27 similarly to the first embodiment of the present invention.

The rotary blade 27 has the same outer shape as the backwashing chamber 17 in order to maintain the balance of the water flow. 5 and 6, the discharge hole 9 of the discharge pipe 15 is formed on the downstream side with respect to flowing water.

In the foreign matter removing apparatus using the filter member 4 configured as described above, the foreign matter is removed by rotating the backwashing chamber 17 similarly to the foreign matter removing apparatus of the embodiment of the present invention. However, as shown in FIG.
The communication hole 28 and the discharge hole 9 are arranged so as to communicate with each other when the backwash chamber 17 is located in the upstream area of the water pipe 1.

That is, by the communication between the communication hole 28 and the discharge hole 9, the flowing water in the filter mesh 3 is simultaneously transmitted from the communication portion between the communication hole 28 and the discharge hole 9 and the backwash port 18 into the communication pipe 28. Will be discharged. At this point, the suction force of the backwash mouth 18 drops to about half of the normal level,
However, since it is located in the upstream area of the water pipe 1 in which the amount of trapped contaminants on the inner peripheral surface of the filter mesh 3 is relatively small, there is no effect on the backwashing, and the inner peripheral surface of the filter mesh 3 is captured. Impurities will be relatively uniformly removed.

Although the embodiment has been described with reference to the drawings, the specific configuration is not limited to the embodiment, and any changes or additions without departing from the gist of the present invention are included in the present invention. It is.

For example, in the embodiment, the filter mesh 3
Is a cylindrical shape, but any shape may be used as long as it is not a perfect cylindrical shape and the separators 19 and 19 ′ that rotate by the rotation of the rotating shaft 16 can slide. The positional relationship between the rotary blade 27, the discharge hole 9, and the communication hole 28 may be appropriately determined according to the strength of the water flow, the type of impurities, and the like, and is not limited as in the embodiment. .

[0033]

By opening the on-off valve and rotating the separator through the rotating shaft, water on the downstream side of the filter mesh flows into the backwashing chamber, and the entire peripheral surface of the filter mesh is backwashed. At the same time, the impurities settling in the discharge section formed under the filter mesh are collected by the rotating blades, and when communicating with the discharge pipe connected to the backwashing chamber and the discharge section at a fixed cycle, an external valve is appropriately provided through the on-off valve. The maintenance work is greatly simplified.

[0034]

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a filter member according to an embodiment.

FIG. 2 is a sectional view of a main part of the embodiment.

FIG. 3A is a sectional view taken along the line AA in operation of FIG. 2,
FIG. 3B is a sectional view taken along the line BB during operation in FIG. 2.

FIG. 4A is a sectional view taken along the line AA in operation of FIG. 2,
FIG. 3B is a sectional view taken along the line BB during operation in FIG. 2.

FIG. 5 is an exploded perspective view of a filter member according to another embodiment.

FIG. 6 is a sectional view of a main part of another embodiment.

FIG. 7 is a sectional view taken along the line CC in the operation of FIG. 6;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Water pipe 2 Case 3 Filter mesh 4 Filter member 5 Hole 6 Seal member 7 Bottom plate 8 Discharge pipe 9 Discharge hole 10 Holding member 11 Depression 12 Lid 13 Hole 14 Open / close valve 15 Discharge pipe 16 Rotating shaft 17 Backwashing chamber 18 Backwashing mouth 19, 19 'Separation plate 20 Sealing plate 21 Support piece 22 Bolt 23 Mounting ring 24 Communication tube 25 Mounting ring 26 Bolt 27 Rotating blade 28 Communication hole 29 Sealing piece

Claims (7)

(57) [Claims] At least a part of a filter mesh having a cylindrical shape is fixed in a case which covers a part of a water pipe, and an inverted plate formed by a separator and an inner peripheral surface of the filter mesh which is axially mounted on a rotating shaft. The washing room is a foreign matter removing device that is in communication with the atmosphere via an on-off valve by a communication pipe, and has a communication unit that allows a discharge section located at a lower portion in the filter mesh and the communication pipe to communicate with each other at a fixed period. And a rotating blade rotatable with the separator in the discharge section. 2. The removal of impurities in a flowing water pipe according to claim 1, wherein the communication means comprises a communication hole formed in a communication pipe communicating with the backwashing chamber and a discharge hole formed in the discharge pipe. apparatus. 3. The apparatus for removing impurities from a flowing water pipe according to claim 1, wherein a rotating blade is formed near the communication hole, and is interlocked with the communication hole. 4. The apparatus for removing impurities from a flowing water pipe according to claim 1, wherein the communication pipe is supported on a bottom wall of the case and functions as a rotating shaft. 5. The apparatus for removing impurities in a flowing water pipe according to claim 2, wherein the communication holes are arranged with a phase shift of about 180 degrees with respect to the backwashing chamber. 6. The apparatus according to claim 1, wherein the bottom plate of the discharge portion is inclined toward the discharge hole. 7. When the backwash room is located in the upstream area of the water pipe,
The discharge hole and the communication hole communicate with each other.
7. The apparatus for removing contaminants in a water pipe according to any one of claims 6 to 6.