JPH0353689Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a device for removing contaminants in water distribution pipes.

BACKGROUND ART Conventionally, water distribution pipes have been frequently used to guide water taken upstream to downstream facilities. However, if foreign matter such as mud gets into the water pipes,
These contaminants are transported along with the water to downstream facilities, which poses a problem when using the water supply at the facilities. Therefore, a device to remove contaminants is installed in the middle of the water distribution pipe. I was letting it happen. Then, at predetermined intervals when it is estimated that the accumulated amount of the contaminants removed within the device reaches a predetermined amount, the contaminants in the device are manually discharged.

Problems that the invention aims to solve: However, the increase in the amount of contaminants retained is not uniform, and the amount reaches a predetermined amount in a shorter period of time than the predetermined period, resulting in a decrease in the removal efficiency of contaminants and There were problems such as an increase in pressure loss.

The present invention solves the above-mentioned problems by providing a contaminant removal device that appropriately discharges contaminants from the device when the retained amount of removed contaminants reaches a predetermined amount. purpose.

Means for Solving the Problems In order to solve the above problems, the present invention provides a sealed tank in the middle of the water distribution pipe so as to communicate with the water distribution pipe on the downstream side, and a pair of The bypass pipe is provided through the bypass pipe, and the pipe wall of the portion of the bypass pipe located inside the tank body is formed into a filter portion that has water permeability and can remove contaminants, and at one end of the bypass pipe. A discharge valve is provided and the other end is connected to the water distribution pipe on the upstream side via a bypass valve, and a pressure gauge capable of detecting the pressure in the water distribution pipe on the upstream and downstream sides of the filter portion is provided, A control device is provided that opens and closes the bypass valve and the discharge valve as appropriate based on a pressure value downstream of the filter section detected by a pressure gauge or a value of a pressure difference between the upstream side and the downstream side of the filter section. It is structured as follows.

Operation In the above configuration, in the normal state, that is, when both discharge valves are closed, and when the bypass valve of one bypass pipe is opened and the bypass valve of the other bypass pipe is closed, the upstream water distribution pipe Contaminants transported by the flowing water flowing through the channel flow into one of the bypass pipes along with the flowing water. Then, the flowing water passes through the filter section of the bypass pipe and flows into the tank body, and then flows into the water distribution pipe on the downstream side. Furthermore, contaminants are collected and removed by the filter section and remain in the bypass pipe. and,
As the contaminants accumulate in the bypass pipe and adhere to the filter section, the pressure loss of the flowing water passing through the filter section increases, and the pressure within the water distribution pipe downstream of the filter section decreases. As the filter continues to collect and remove contaminants, the pressure value in the water distribution pipe downstream of the filter is detected by the pressure gauge, or the pressure value in the water distribution pipe upstream and downstream of the filter is detected by the pressure gauge. When the value of the pressure difference reaches a preset predetermined value, i.e. the value that would result from contaminant retention within the permissible limit, the control device activates the bypass in which one contaminant is retained. At the same time as the discharge valve of the pipe is opened, the bypass valve of this bypass pipe is closed and the bypass valve of the other bypass pipe is in an open discharge state. In the discharge state, a part of the flowing water flowing from the upstream water distribution pipe through the filter section of the other bypass pipe, where contaminants are collected and removed, and flows into the tank body, flows into the filter section of the one bypass pipe. Water is passed from the inside of the tank body toward the inside of the bypass pipe, and contaminants staying in one of the bypass pipes are discharged to the outside through the discharge valve of one of the bypass pipes together with the flowing water. At this time, most of the flowing water flowing into the tank body flows into the water distribution pipe on the downstream side. Therefore, the collected and removed contaminants can be discharged without water interruption, that is, in a state where the water flowing from the upstream water distribution pipe is constantly flowing into the downstream water distribution pipe without any water cutoff. . After a certain period of time, the control device closes the discharge valve that was discharging the contaminants, and the water and contaminants flowing from the upstream water distribution pipe pass through the other bypass pipe. After the flowing water from which contaminants have been removed by the filter section flows into the tank body, it enters the normal state where it flows into the water distribution pipe on the downstream side. From then on, each time you remove contaminants,
Bypass pipes through which water is passed alternately to collect and remove contaminants.

Embodiment Hereinafter, an embodiment of the present invention will be described based on the drawings. In Figs. 1 to 3, a collector body 2 forming a sealed tank is located in the middle of a pipe 1 laid in the soil to form a water distribution pipe, and a pipe 1a on the downstream side.
The main valve 3 is connected to the main valve 3 via an electric main valve 3. This collector body 2 includes a pair of bypass pipes 4.
filter portions 5a, 5b forming tube bodies are interposed in portions of the bypass pipes 4a, 4b located inside the collector body 2. The filter parts 5a and 5b have tube walls that are permeable to water and can remove contaminants, and
It is made of mesh-sized stainless steel wire mesh. Moreover, exhaust pipes 7a and 7b, which are equipped with electrically operated exhaust valves 6a and 6b, are connected to one end of the bypass pipes 4a and 4b.
The other end of 4b is an electric bypass valve 8a, 8
It is connected to the upstream piping 1b via b.
Then, the upstream piping 1b and the downstream piping 1
A is provided with pressure gauges 9a and 9b that can detect the pressure inside each pipe. The main valve 3, discharge valves 6a, 6b, bypass valves 8a, 8b, and pressure gauges 9a, 9b are connected to the control device 10.
electrically connected to. The control device 10 includes a filter section 5a, which is detected by a pressure gauge 9a on the downstream side.
The pressure value in the pipe 1a downstream from 5b, or
Based on the difference between the pressure values in the upstream and downstream piping 1a, 1b of the filter sections 5a, 5b detected by both the upstream and downstream pressure gauges 9a, 9b, the main valve 3 and the discharge valve 6a, 6b and bypass valves 8a, 8b can be controlled to open and close.

The operation of the above configuration will be explained. In the normal state, both the discharge valves 6a and 6b are closed, the bypass valve 8a of one bypass pipe 4a is opened, the bypass valve 8b of the other bypass pipe 4b is closed, and the main valve 3 is opened. In this state, contaminants transported by the flowing water A flowing through the upstream pipe 1b flow into one of the bypass pipes 4a together with the flowing water. The flowing water A then flows into the collector main body 2 through the filter portion 5a of the bypass pipe 4a, and then flows into the downstream piping 1a. Further, the contaminants are collected and removed by the filter section 5a and remain inside the bypass pipe 4a. Then, the contaminants are removed from the bypass pipe 4.
As the water stagnates inside the filter section a and adheres to the filter section 5a, the pressure loss of the flowing water passing through the filter section 5a increases, and the pressure inside the pipe 1a downstream of the filter section 5a decreases. Then, as the filter section 5a further collects and removes the contaminants, the pressure value in the pipe 1a downstream of the filter section 5a detected by the downstream pressure gauge 9a, or
Filter section 5a detected by both pressure gauges 9a and 9b
When the value of the pressure difference in the piping 1a, 1b on the more upstream side and the downstream side reaches a preset predetermined value, that is, a value resulting from contaminants staying within the permissible limit, the control device 10 is activated, the discharge valve 6a of the discharge pipe 7a connected to the bypass pipe 4a where one of the contaminants is retained is opened, and the bypass valve 8a of this bypass pipe 4a is closed and the other bypass pipe 4b is opened. The bypass valve 8b is in an open discharge state. In the discharge state, the pipe 1b on the upstream side passes through the filter section 5b of the other bypass pipe 4b,
A part of the flowing water A that has collected and removed contaminants and flows into the collector main body 2 passes through the filter portion 5a of one bypass pipe 4a from the inside of the collector main body 2 toward the inside of the bypass pipe 4a. One bypass pipe 4
The contaminants staying in A are discharged from the discharge pipe 7a of one of the bypass pipes 4a and the discharge valve 6a together with the flowing water A.
It is discharged to the outside through. At this time, most of the flowing water A flowing into the collector body 2 flows into the downstream piping 1a. Therefore, the collected and removed contaminants can be discharged without water interruption, that is, in a state where the flowing water A flowing from the upstream piping 1b is always allowed to flow into the downstream piping 1a without any water interruption. . After a certain period of time, the control device 10 closes the discharge valve 6a that was discharging the contaminants, and the flowing water A and the contaminants flowing from the upstream pipe 1b are transferred to the other bypass pipe 4.
b, and the filter section 5 of the other bypass pipe 4b.
After the flowing water A from which contaminants have been removed in step b flows into the collector main body 2, it enters a normal state in which it flows into the downstream piping 1a. Thereafter, each time the contaminants are discharged, the bypass pipes 4a and 4b through which water is passed are alternately changed. Therefore, the contaminants collected and removed by the filter sections 5a and 5b and remaining in the bypass pipes 4a and 4b are removed from the bypass pipes in a timely manner and without water interruption, when the amount of the remaining substances reaches the permissible limit. It can be discharged outside of 4a and 4b. Also,
This allows the removal efficiency of the filter sections 5a, 5b to be kept constant. In addition, in the above-mentioned discharge state, by closing the main valve 3 and allowing the entire amount of flowing water A flowing into the collector body 2 to pass through the filter section 5a or 5b, the filter section 5a, 5b Contaminants attached to the surface can be more effectively removed. Furthermore, in this embodiment, the explanation has been made assuming that the flowing water A always flows in one direction in the pipe 1, but if the direction of flow changes with time, as shown in FIG.
Branch pipes 11a and 11b are provided in the middle of the pipe 1 with check valves 12a and 12b interposed therebetween, one branch pipe 11a is provided with the configuration X of the previous embodiment, and the other branch pipe 11b is provided with the configuration X of the previous embodiment. By providing a configuration Y in which the upstream side and the downstream side are reversed, the same effects as in the previous embodiment can be obtained while dealing with changes in the flow direction of running water.

Effects of the Device As described above, according to the present invention, contaminants collected and removed by the filter section and retained in the bypass pipe can be collected and removed by the pressure value of the water distribution pipe downstream of the filter section or by the filter. Based on the value of the pressure difference between the upstream and downstream water distribution pipes, the control device can discharge water to the outside of the bypass pipe in a timely manner without water interruption. Furthermore, this allows the removal efficiency of the filter section to be kept constant.

[Brief explanation of drawings]

FIG. 1 is an overall front view showing an embodiment of the present invention;
2 is a plan view taken along the line aa in FIG. 1, FIG. 3 is a side view taken along line bb in FIG. 1, and FIG. 4 is a configuration diagram showing another embodiment of the present invention. 1a... Upstream piping, 1b... Downstream piping, 2... Collector body, 3... Main valve, 4
a, 4b...Bypass pipe, 5a, 5b...Filter section, 6a, 6b...Discharge valve, 7a, 7b...
...Discharge pipe, 8a, 8b...Bypass valve, 9
a, 9b...pressure gauge, 10...control device.

Claims (1)

[Scope of utility model registration request] A sealed tank body is provided in the middle of the water distribution pipe so as to communicate with the water distribution pipe on the downstream side, and a pair of bypass pipes are provided to pass through the tank body, and a portion of the bypass pipe located inside the tank body is provided. The pipe wall is formed into a filter part that has water permeability and can remove contaminants, and a discharge valve is provided at one end of the bypass pipe, and the other end is connected to the upstream water distribution pipe through the bypass valve. Provided are pressure gauges that are connected and capable of detecting the pressure of the water distribution pipe on the upstream and downstream sides of the filter section, and the pressure value detected by the pressure gauge on the downstream side of the filter section or the upstream side of the filter section is provided. A contaminant removal device in a water distribution pipe, characterized in that a control device is provided to open and close the bypass valve and the discharge valve as appropriate based on the value of the pressure difference between the downstream side and the downstream side.