Strainer having non-powered cleaning function
Disclosed is a strainer having a non-powered cleaning function. The present invention enables filtration of foreign substances from fluid by disposing a cylindrical filter mesh inside a main body of the trainer, such that the fluid from an inlet pipe flows through the filter mesh toward an outlet pipe. The present invention also enables cleaning of the filter mesh by disposing a central shaft of a scraper at the center of the filter mesh, and rotating the central shaft such that brushes connected thereto scrape off foreign substances collected on the filter mesh.
1. A strainer comprising:
a cylindrical main body provided with a foreign substance collection chamber configured to collect foreign substance at one side of a lower portion thereof;
an inlet pipe installed in one surface of the main body;
an outlet pipe installed in the other surface of the main body to face the inlet pipe;
a cylindrical filter mesh accommodated inside the main body to filter foreign substances contained in a fluid introduced into the main body through the inlet pipe;
a lower cover coupled to a lower portion of the main body;
a propeller accommodated inside the lower cover;
a brush scraper comprising a central shaft which passes through a center of the filter mesh and of which a lower end is coupled to a center of the propeller and a brush connected to the central shaft to rotate together when the central shaft rotates to scrape off the filter mesh so as to remove the foreign substances accumulated on an inner circumferential surface of the filter mesh;
a drain pipe configured to connect a side of the main body to the lower cover so that the fluid flows from the lower portion of the main body to the inside of the lower cover; and
a 3-way discharge valve having one end connected to the lower cover and the other end connected to the foreign substance collection chamber and configured to discharge the fluid contained in the main body to the outside or discharge the fluid contained in the lower cover to the outside according to a discharge mode.
2. The strainer of claim 1 , wherein, when the 3-way discharge valve is opened in a cleaning mode, the fluid contained in the main body is introduced into the lower cover through the drain pipe, and the fluid introduced into the lower cover is discharged through the 3-way discharge valve to rotate the propeller, thereby rotating the central shaft.
3. The strainer of claim 1 , wherein, when the 3-way discharge valve is opened in a discharge mode, the fluid contained in the main body is discharged through the 3-way valve connected to the foreign substance collection chamber.
4. The strainer of claim 1 , further comprising a collection scraper coupled to a lower portion of the central shaft to rotate together when the central shaft rotates so that the foreign substances on a bottom surface of the main body are collected into the foreign substance collection chamber.
5. The strainer of claim 1 , further comprising:
an upper cover coupled to an opened upper portion of the main body; and
a handle,
wherein an upper end of the central shaft is coupled to a center of the handle by passing through a center of the upper cover, and when the handle rotates, the central shaft rotates by being interlocked with the handle.
6. The strainer of claim 1 , further comprising:
a first pressure gauge installed in the inlet pipe; and
a second pressure gauge installed in the outlet pipe.
7. The strainer of claim 1 , wherein the brush is connected to the central shaft while rotating in a certain direction as it goes downward from an upper portion of the central shaft.
8. The strainer of claim 1 , wherein a speed controller configured to adjust an amount of fluid flowing through the drain pipe to control a rotation speed of the propeller is further provided between the drain pipe and the lower cover.
9. The strainer of claim 1 , wherein each of the inlet pipe and the outlet pipe is connected to the pipe by a groove joint.