JPH0759289B2 - Foreign object collection device - Google Patents

Description

TECHNICAL FIELD The present invention relates to an in-pipe foreign matter collecting device.

2. Description of the Related Art Conventionally, there is a device that uses a filter as a device for collecting foreign matter in a pipeline (for example, a water pipe), but in this case, a collection container containing a filter is interposed in the middle of the pipeline.

Problems to be Solved by the Invention According to the above-described conventional configuration, since a container for collecting foreign matter is interposed in the middle of the pipeline, the foreign matter is removed only in the vicinity thereof, and therefore the foreign matter is spread over a wide range. When removing, a large number of foreign matter collecting devices must be arranged, which causes a problem of high cost.

Therefore, an object of the present invention is to provide an in-tube foreign matter collecting device that can solve the above problems.

Means for Solving the Problems In order to solve the above problems, the in-pipe foreign matter collecting device according to the present invention is a pipe having a pump in the middle which can be connected between a pair of branch portions provided in a pipe, A foreign matter collection container which is interposed in the middle of the piping and has a filter inside, and a first bypass pipe which connects the foreign matter collection side space part of the foreign matter collection container and the piping downstream thereof.
The second bypass pipe connects the upstream side of the foreign matter collection container of the pipe and the foreign matter non-collection side space of the foreign matter collection container.

Operation In the above configuration, when collecting foreign matter in the pipe, after connecting the pipe between the branch parts, shut off the flow between the branch parts and drive the pump to collect the fluid in the pipe in the middle of the pipe. Foreign matter can be collected by guiding it to a collecting container. In addition, when backwashing the filter,
All that is required is to put the second bypass pipe in a usable state and drive the pump. That is, water is made to flow from the foreign matter non-collection side space portion of the foreign matter collection container to the foreign matter collection side space portion side through the second bypass pipe, and backwashing is performed.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

In FIG. 2, reference numeral 1 denotes a water pipe (a foreign substance collecting device for collecting foreign substances in the water pipe 2 by using a pair of fire extinguishing pillars 3A, 3B which are branch portions of an example 2 of a pipeline). 1 is
As shown in FIG. 1, a main pipe 5 which is connectable between a pair of fire extinguishing pillars 3A, 3B and has a pump 4 in the middle thereof,
The main pipe 5 is provided with a foreign matter collection container 7 having a filter 6 inside, a foreign matter collection side space portion 7a of the collection container 7 and a main pipe 5 downstream thereof. Three first bypass pipes 8A, 8B, 8C to be connected, and each of these first bypass pipes
A foreign matter collecting container 10 which is provided in the middle of the bypass pipes 8A, 8B and 8C and has a foreign matter collecting filter 9 respectively.
And the upstream side of the collection container 7 of the main pipe 5 and the collection container 7
Second bypass pipe 11 connecting the foreign matter non-collection side space portion (the side from which the foreign matter has been removed) 7b, and both side space portions 7 of the collection container 7
Pressure gauges 12A and 12B for measuring the pressure in a and 7b, and first and second opening / closing valves 1 installed on both sides of the collection container 7 of the main pipe 5.
3,14, the third to fifth on-off valves 15,16,17 installed upstream of the recovery container 10 of each of the first bypass pipes 8A, 8B, 8C, and in the middle of the second bypass pipe 11. And a sixth on-off valve 18 mounted. The pump 4 is the first bypass pipe 8A, 8B, 8C.
The second bypass pipe 11 is connected to the main pipe 5 on the downstream side by the connection point of the above, and the connection point of the second bypass pipe 11 to the main pipe 5 is on the upstream side of the first on-off valve 13.

In the above configuration, when collecting foreign matters such as sand and dust accumulated in the water pipe 2 between the pair of fire hydrants 3A and 3B, both ends of the main pipe 5 are connected to the fire hydrants 3A and 3B, respectively. The second on-off valves 13 and 14 are opened, and the remaining on-off valves 15 to 18 are all closed. Next, after driving the pump 4, the pipeline-side opening / closing valve 1 outside the two fire hydrants 3A, 3B of the main pipe 5
Close 9,20. Then, the water in the water pipe 2 flows through the collection container 7 in the direction of the arrow A (shown by the solid line in FIG. 1), and the foreign matter is collected by the filter 6. Then, when the amount of collected foreign matter is increased and the filter 6 is clogged (this can be seen from the differential pressure between the pair of pressure gauges 12A and 12B connected to both space portions 7a and 7b), the sixth And the third and third open / close valves 18 and 15 are opened, and the first and second open / close valves 13 and 14 are opened.
Close. Then, the water enters the non-collection side space portion 7b of the collection container 7 through the second bypass pipe 11 and flows in the direction of the arrow B (shown by the one-dot chain line in FIG. 1) to back-clean the filter 6 and
The foreign matter that has flowed into the first bypass pipe 8A provided with the on-off valve 15 is collected by the filter 9 in the recovery container 10 and collected.
It will be recovered to 10. Then, again, as described at the beginning, water is made to flow in the direction of arrow A to collect foreign matter,
When the filter 6 is clogged, foreign matter may be sequentially collected in the remaining collecting container 10 on the side of the fourth or fifth on-off valves 16 and 17.

Then, when the collection of the foreign matter at this location is completed, the foreign matter collection apparatus may be removed, moved to the next location, and the foreign matter removed in the same manner.

The number of the second bypass pipes installed is not limited to three, and can be increased or decreased as necessary.

Effect of the Invention According to the configuration of the present invention, since the pipe in which the foreign matter collection container is interposed can be connected between the branch portions of the pipeline, unlike the conventional one that is interposed in the middle of the pipeline. Since it can be moved, foreign matter can be removed at any place between the branch portions, and therefore the facility cost can be reduced. Further, since the second bypass pipe connecting the upstream side of the foreign matter collection container of the pipe and the foreign matter non-collection side space portion of the foreign matter collection container is provided, the foreign matter non-collection is performed using this second bypass pipe. The filter can be backwashed only by flowing water to the collecting side space, and therefore, it is not necessary to separately provide a backwashing pump.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a schematic configuration diagram of a foreign matter collecting device, and FIG. 2 is a schematic configuration diagram showing a usage state. 1 ... Foreign matter collection device, 2 ... Water pipe, 3A, 3B ... Fire hydrant, 4 ... Pump, 5 ... Main piping, 6 ... Filter,
7 ... Foreign material collection container, 8A, 8B, 8C ... First bypass pipe, 10
…… Foreign material collection container, 11 …… Second bypass pipe.

Claims (1)

[Claims] 1. A foreign material collection container having a pipe which is connectable between a pair of branch portions provided in a pipeline and has a pump in the middle thereof, and a filter which is interposed in the middle of the pipe and has a filter therein. A first bypass pipe connecting the foreign matter collection side space of the foreign matter collection container and a pipe downstream thereof, and a foreign matter non-existence of the pipe in the upstream side of the foreign matter collection container and the foreign matter collection container. An in-pipe foreign matter collecting device comprising: a second bypass pipe connecting the collection side space portion.