Power-free back washing filter

Abstract

A power-free back washing filter comprises a shell, a filtering device and a back washing flow guiding tube, the upper part and the lower part of the shell are respectively provided with a filtering water outlet and a filtering water inlet, the bottom end of the shell is provided with a back washing water outlet; the filtering device is arranged at the upper part inside the shell, and a back washing flow guiding tube is arranged below the filtering device in a rotational way. The back washing flow guiding tube is equipped with an impeller which is in correspondence with the water inlet in term of position; the position corresponding to the water inlet on the shell is connected with one end of a branch water inlet tube, the other end of the branch water inlet tube is connected with the water inlet, and the branch water inlet tube is provided with a valve. The invention has the advantages that: the power of the water path is used for driving the impeller to rotate, so that the rotation of the back washing flow guiding tube can be realized without an extra power device, thus not only simplifying the structure, but also reducing the cost, in particular being convenient for the use in the occasions without power supply.

Description

No power backwash filter technical field The invention relates to a backwashing filter without power, which is mainly used for filtering waterways. Background technique The main structure of the existing backwash filter is shown in Fig. 1, which includes a motor 1, a casing 2, a filter device 3 and a backwash guide pipe 5, and the upper and lower parts of the tank-shaped casing 2 are respectively provided with a filter outlet 4 and an inlet. The water port 7 is provided with a backwash water outlet 6 at the bottom of the casing 2 . The filtering device 3 is installed on the top in the housing 2, and a rotating backwashing guide pipe 5 is installed below the filtering device 3, and the backwashing guiding pipe 5 is generally a Ψ-shaped structure (the upper ends of its two bifurcated pipes connected with the lower end of the central pipe), its central axis (pipe) is rotatably supported on the lower end of the filter device 3, and is connected with the output shaft of the mo...

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to provide a non-powered backwash filter to solve the existing problems in the prior art that a power device needs to be installed, which not only increases the cost, complicates the structure, but also requires extra power and is inconvenient to use in places without power supply.

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