JPH0775707A - Device for removing extraneous material in water flow pipe - Google Patents

Abstract

PURPOSE:To assure water quality by removing the extraneous material in a water flow pipe and to extremely easily performance maintenance operation of an extraneous material capturing means. CONSTITUTION:The extraneous materials are captured by the extraneous material capturing means 4 and are accumulated therein. The arbitrary extraneous material capturing surface (a) of the extraneous material capturing means 4 enclosed by a back washing chamber 6 of a low pressure connected outside receives a back washing effect in accordance with the static pressure of flowing water. The extraneous materials are removed from the extraneous material capturing surface (a) and are moved into the back washing chamber 6 in such a case. The extraneous material in the back washing chamber 6 are then discharged outside the water flow pipe 1 by an extraneous material discharging means. All the extraneous material capturing surfaces of the back washing chamber 6 are covered by the movement thereof and, therefore, the extraneous materials accumulated in the extraneous material capturing means 4 are completely removed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a contaminant removing device for removing contaminants contained in flowing water flowing in a flowing pipe.

[0002]

2. Description of the Related Art Generally, in running water pipes, for example, ductile cast iron pipes, mortar lining is applied to the inner surface of the pipes to prevent rust, and the quality of water supplied to each household is guaranteed.

[0003]

However, in the above-mentioned conventional technique, the branch pipe is taken out from the upstream side of the flowing water pipe, that is, from the main pipe as needed, and therefore, the flowing water pipe is bored, and Cutting work of running water pipe is performed. There was a problem that metal powder was generated in these construction processes, and metal parts were exposed by the drilling and cutting work of the running water pipe, and rust was generated in this part, so these metal powder and rust powder flowed in the running water pipe. .

Most of the drilling and piping work is performed underground, and sand or the like may enter the running water pipe, making it difficult to guarantee water quality.

Therefore, an apparatus equipped with a filter member for removing such contaminants in running water has been developed. However, if this device is used for many years, the filter member will be clogged, and the flow of the running water in the running water pipe will be hindered. Therefore, it is necessary to regularly replace the filter member. This replacement work has to be carried out by once stopping the running water in the running water pipe and disassembling the device, which is very troublesome.

The present invention has been made by paying attention to such a problem, and it is possible to remove impurities in the running water pipe to ensure the water quality and to perform maintenance work very easily. An object of the present invention is to provide a foreign matter removing device.

[0007]

In order to achieve the above-mentioned object, the foreign matter removing device in the running water pipe of the present invention is equipped with a foreign matter capturing device which is installed so as to catch the foreign matter contained in the running water in the running water pipe. Means, a movable backwash chamber for surrounding any foreign matter trapping surface of the foreign matter trapping means from the upstream side, and foreign matter removed by backwashing from the foreign matter trapping surface surrounded by the backwash chamber And a foreign matter discharging means for discharging the water to the outside of the running water pipe.

[0008]

Contaminants mixed in the flowing water in the flowing pipe are captured by the contaminant capturing means and accumulated there. However, any foreign matter trapping surface of the foreign matter trapping means enclosed by the movable low pressure backwash chamber is subjected to backwashing action based on the static pressure of the flowing water. In this case, since the flowing water flows back from the contaminant capturing surface toward the backwash chamber, the contaminants are removed from the contaminant capturing surface and move into the backwash chamber. Next, the impurities in the backwash chamber are discharged to the outside of the running water pipe by the contaminant discharging means. This backwash chamber can cover a wide range of all the foreign matter trapping surfaces by its movement, so that the foreign matters accumulated in the foreign matter trapping means are completely removed.

[0009]

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

Reference numeral 1 denotes a water pipe as a running water pipe, and a substantially cylindrical case 2 composed of upper and lower members is watertightly fitted and fixed to the water pipe 1. The axis of the substantially cylindrical case 2 extends substantially at right angles to the axis of the water pipe 1 and coincides with a through hole 3 formed in the water pipe 1 by a boring means such as a drill. A cylindrical filter member 4 is attached to the through hole 3 so as to block running water in the water pipe 1, and a cylindrical filter member 4 for catching foreign matters caused by the running water in the water pipe 1. That is, the cylindrical filter member 4 constitutes the foreign matter capturing means.

The filter member 4 is formed in a mesh shape, and has a hole portion 5 on the front surface for receiving impurities, as shown in FIG. An annular support frame 8 for supporting a bottom plate 7 of a backwash chamber 6, which will be described later, is attached to the peripheral edge of the lower end of the cylindrical filter member 4. As shown in FIG. 1, in the case 2, the filter member 4 includes an annular lower holding member 9 fixed to the inner wall of the case 2 and a disc-shaped upper holding member 11 pressed by the lid 10. It is fixed between the two. The upper holding member 11 has a seal member 12 on the outer peripheral surface thereof, and the case 2 is inserted by the seal member 12 into the case 2 while being inserted into the case 2.
Is sealed.

In the filter member 4, a backwash chamber constituting body 13 as clearly shown in FIG. 3 is arranged concentrically and rotatably with the cylindrical filter member 4. The backwash chamber structure 13 includes a spindle 14 that forms a rotating shaft, a spindle 14 that extends in the radial direction around the spindle 14, and the spindle 1
Two separating plates 16 having a central angle α, which are integrally connected to each other by a boss portion 15 fitted in
And a circular bottom plate 7 fitted to the boss portion 15 so as to abut from below. In this case, the two separators 16
It has almost the same height as the filter member 4 and is provided with an elastic scraping edge 17 made of rubber or plastic at the outer end portion in the radial direction thereof, which is in sliding contact with the inner peripheral surface of the filter member 4.

The backwash chamber structure 13 and the filter member 4
By combining the two, that is, between the two separators 16 and the inner peripheral surface of the filter member 4, the backwash chamber 6 having a fan-shaped cross section with a central angle α is formed. The backwash chamber 6 is closed at the upper end by the upper holding member 11, but at the lower end it communicates with the lower chamber 19 of the case 2 by the discharge hole 18 provided in the bottom plate 7. The lower chamber 19 can be arbitrarily opened to the outside (mainly the atmosphere) by a discharge pipe 21 connected to the case bottom wall 20 and an opening / closing valve 22 interposed in the discharge pipe 21. Case 2
The lower chamber 19 of the
It is completely partitioned from the running water area other than the backwash chamber 6.

The lower end of the spindle 14 is supported by the support recess 23 of the case bottom wall 20, and the upper end of the spindle 14 penetrates the upper holding member 11 and the lid 10. Therefore, the spindle 14 and thus the backwash chamber constituting body 13 can be arbitrarily rotated via the upper end portion of the spindle 14 protruding from the lid 10.

The seal piece 24 shown in FIG. 2 is for separating the inflow side and the outflow side of the filter member 4,
It is in contact with the outer peripheral surface of the filter member 4 over its entire height.

In this embodiment, the running water in the water pipe 1 flows from left to right as shown by an arrow P in FIGS. At that time, since the running water flows through the cylindrical filter member 4 from the inner side to the outer side, impurities mixed in the running water are trapped on the inner peripheral surface side of the filter member 4, and gradually there. Deposit on. When the accumulation of impurities progresses to some extent, the filter member 4 is clogged, and eventually a large non-negligible resistance is generated in the water flow in the water pipe 1.
In this case, contaminants can be removed from the filter member 4 by backwashing the filter member 4 in a water-free state.

At the start of backwashing, the on-off valve 22 is first opened. Then, the backwash chamber 6 is opened to the outside (mainly atmospheric pressure) through the discharge hole 18 of the bottom plate 7, the lower chamber 19 of the case 2 and the discharge pipe 21. Thereby, in the arc region a of the central angle α of the filter member 4 surrounded by the backwash chamber 6, the relatively high static pressure on the side of the water pipe 1 (that is, the outside) and the side of the backwash chamber 6 (that is, the inside). Since a relatively low external pressure acts, a backwash action occurs based on the pressure difference. Arc region a of the filter member 4 which is subjected to backwashing action
By rotating the backwash chamber 6 via the spindle 14 as shown in FIGS. 5 and 6, the backwash chamber 6 can be moved over the entire foreign substance trapping region of the filter member 4. In this way, all the contaminants deposited on the inner peripheral surface of the filter member 4, that is, the contaminant capturing surface are completely removed by the backwashing action and discharged from the discharge pipe 21. Finally, by closing the opening / closing valve 22, the backwash action is completed.

After the backwashing, it is advantageous to arrange the backwashing chamber 6 along the direction of the water flow P as shown in FIG. 2 so that the resistance of the water flow becomes small.

Although the embodiments have been described above with reference to the drawings, the specific configuration is not limited to the embodiments, and modifications and additions within the scope of the present invention are included in the present invention. Be done.

For example, the filter member may have a flat plate shape, in which case the backwash chamber moves translationally along the plane of the filter member. It is also possible to omit the case 2 and attach the filter member 4 directly to the water pipe 1.

[0021]

In the foreign matter removing device in the running water pipe of the present invention, the foreign matter catching means mounted so as to catch the foreign matter contained in the running water in the running water pipe, and the foreign matter catching means are optional. Movable backwash chamber for enclosing the foreign matter trapping surface from the upstream side, and foreign matter discharged from the foreign matter trapped surface enclosed by the backwash chamber by backwashing to the outside of the running water pipe Since the discharge means is provided, the contaminants in the running water are removed to ensure the water quality, and in the uninterrupted water state, simply rotating the backwash chamber without replacing the contaminant capturing means. Thus, it is possible to easily perform the maintenance work of the foreign matter capturing means.

[0022]

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of an embodiment.

2 is a sectional view taken along line AA of the embodiment shown in FIG.

FIG. 3 is a perspective view of a backwash chamber structure.

FIG. 4 is a perspective view of a filter member as a foreign matter capturing means.

FIG. 5 is a cross-sectional view showing one mode of the embodiment when discharging foreign matters.

6 is a sectional view taken along line BB of the embodiment shown in FIG.

[Explanation of symbols]

1 Water Pipe 2 Case 3 Through Hole 4 Filter Member 5 Hole 6 Backwash Room 7 Bottom Plate 8 Support Frame 9 Lower Holding Member 10 Lid 11 Upper Holding Member 12 Sealing Member 13 Backwash Chamber Component 14 Spindle 15 Boss 16 Separator 17 Scraping edge 18 Discharge hole 19 Lower chamber 20 Case bottom wall 21 Discharge pipe 22 Open / close valve 23 Bearing recess 24 Seal piece

Claims (7)

[Claims] 1. A foreign matter trapping means mounted to trap foreign matter contained in running water in a running water pipe, and a moveable means for surrounding any foreign matter trapping surface of the foreign matter trapping means from the upstream side. A backwash room, and a foreign matter discharge means for discharging the foreign matter removed by the backwash from the foreign matter trapping surface surrounded by the backwash room to the outside of the running water pipe. Contaminant removal device. 2. The foreign matter removing device in a running water pipe according to claim 1, wherein the foreign matter capturing means is constituted by a cylindrical filter member provided in a case attached to the running water pipe. 3. The foreign matter removing device in a running water pipe according to claim 2, wherein the backwash chamber is concentrically and rotatably arranged in a cylindrical filter member. 4. A spindle that forms a rotation axis, two separators that extend in a radial direction around the spindle, and are integrally connected to each other by a boss portion that is fitted to the spindle, and the separators. A backwash chamber structure including a circular bottom plate fitted to the boss so as to abut from below is rotatably accommodated in the filter member, and the two separator plates and the inner circumference of the filter member are provided. The foreign matter removal device in the running water pipe according to claim 3, wherein a backwash chamber is formed by the surface. 5. The bottom plate of the backwash chamber structure is provided with a discharge hole for contaminants, and the discharge hole is connected to the contaminant discharge means. Contaminant removal device. 6. The backwash chamber is provided with an elastic scraping edge for abutting against the contaminant trapping surface to scrape contaminants from the contaminant trapping surface. The foreign matter removing device in the running water pipe described. 7. The foreign matter discharge means comprises a discharge pipe connected to the bottom of the case, and an opening / closing valve interposed in the discharge pipe, according to any one of claims 2 to 6. Contaminant removal device in running water pipe.