|
|
|
Patented in Japan, U.S.A., other
|
|
|
Bore
|
50-600mm
|
|
Rated pressure
|
1MPa
|
|
|
Clean water can be secured by easy and quick operation.
|
|
|
Easy operation
|
|
Screen clogging is easily removed.
|
|
|
Efficient operation
|
|
Removal of foreign material is achieved efficiently and quickly by using
just the handle, keeping hands clean.
|
|
|
Electric power unnecessary
|
|
Electric power is not required, decreasing running costs.
* Automatic operation is possible with a small electric motor.
|
|
|
Highly economical
|
|
Simple structure ensures durability and easy maintenance, eliminating adjustment
of the strainer.
|
Structure & Principle (PAT.)
|
|
1.
|
When the outlet valve is closed, an inner space between the screen and
the outlet valve is formed.
|
|
2.
|
With the operation of the handle, the cam rotates and pushes down the screen.
|
|
3.
|
When the cam exceeds the maximum point, the screen is released and brought
back to the normal position by the force of the coil spring.
|
|
4.
|
The inner space is compressed, ejecting the water through the screen, thus
removing the foreign material clogging the screen.
|
|
Clog removal
|
|
When the pressure difference between the inlet and the outlet exceeds 50kPa,
clogging can be easily removed by the following operation:
|
|
1.
|
Close outlet valve V1.
|
|
2.
|
Operate the handle to rotate the cam, removing the clogging from the screen.
|
|
3.
|
Open drain valve V2 and drain the foreign material accumulated below the
screen.
|
|
.
|
In case of strongly adhering foreign material, repeat the operation two
or three times.
|
|
.
|
The operation can be automated using an auto valve, small electric motor
and a differential pressure gauge (optional).
|
Most clogs are removed with one operation
|
|
|
Foreign material clogging the screen
|
| The size of the screen mesh is 10mm in this case. |
|
|
Foreign material removed from the screen by this operation
|
| The size of the screen mesh is 10mm in this case. |
|
|
Change in inlet and outlet pressure difference before and after the operation
|
|
Easy, rapid removal
|
Example applications
|
|
Mizusawa Regional Development Bureau in Iwate Pref.
|
ST-200
|
|
|
|
Demonstration carried out at the Kyushu Agricultural Administration Bureau-Uwaba
Agricultural Irrigation, as a part of the Joint Research and Development
Project for New Technology by the government and private enterprises, and
supervised by the Ministry of Agriculture, Forestry and Fisheries of Japan.
|
ST-200
|
|
|
|
