Filtering device for self-priming pump

Abstract

The invention relates to the field of self-priming pumps, in particular to a filtering device for a self-priming pump. The filtering device is connected with a water inlet end of the self-priming pump. The self-priming pump comprises a motor and a pump body. The filtering device comprises a primary filtering unit. The primary filtering unit comprises a separating part and a settling part, and thesettling part is connected with the bottom of the separating part. A water inlet pipe and a water outlet pipe are arranged on the separating part. The water inlet pipe is positioned below the water outlet pipe in the vertical direction. The water inlet pipe and the water outlet pipe are tangentially connected with a cavity in the separating part, and the projection connecting lines of the two tangential positions in the vertical direction are generally arranged in the radial direction of the cavity of the separating part, so that the water flow entering the water inlet pipe forms vortex alongthe cavity. By the adoption of the filtering device for the self-priming pump, the structural design is reasonable, an existing self-priming pump is improved, the brand-new filtering device is added,sediment impurities in water are effectively filtered by adopting a multi-stage filtering mode, a filtering material does not need to be replaced, the filtering device has a self-cleaning function, the problem that a filtering screen is blocked after long-term use is avoided, and the manufacturing and using cost is low.

Description

technical field [0001] The invention relates to the field of self-priming pumps, in particular to self-priming pump filtering devices. Background technique [0002] The self-priming pump is a self-priming centrifugal pump. It has the advantages of compact structure, convenient operation, stable operation, easy maintenance, high efficiency, long life, and strong self-priming ability. The pipeline of the self-priming pump does not need to be installed. Bottom valve, only need to ensure that there is a quantitative suction liquid stored in the pump body before work. There are many types of existing self-priming pump structures, some of which are used in factories and household water supply systems. In this scenario, self-priming pumps are often used to pump well water. During the process of pumping well water, it is easy to bring out the water in the well. Sediment, leading to a decline in water quality, and it is easy to block the filter screen in the existing self-priming pu...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a filter device for a self-priming pump, which has a reasonable structural design, improves the existing self-priming pump, adds a brand-new filter device, and adopts a multi-stage filtration method to effectively filter out sediment impurities in the water without replacement The filter material, the filter device has a self-cleaning function, avoiding the problem of filter blockage after long-term use, low manufacturing and use costs, good use effect, and solves the problems existing in the prior art

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