fluid filter

Abstract

The invention provides a fluid filter, which includes a filter housing and a filter core with a fluid inlet and a fluid outlet; wherein the filter housing is provided with two-stage filter channels with built-in filter cores, and the two-stage filter channels are connected through connecting channels ; The fluid inlet communicates with the inlet of the primary filter channel, and the fluid outlet communicates with the outlet of the secondary filter channel. When the present invention works, its fluid flow is short and the pressure loss is small; the setting of the fluid inlet position overcomes the shortcoming that the filter residue is easy to fall into the fluid inlet when the existing filter element is cleaned, and the eccentric setting of the primary filter element makes the side of the primary filter element suffer The fluid pressure is uniform; at the same time, the first-stage filter body can be formed by die-casting at one time, the processing speed is fast, the processing cost is low, and the formed filter body has a smooth appearance and reliable quality.

Description

technical field [0001] The invention relates to a filter, in particular to a fluid filter for fuel oil, gasoline, diesel oil, kerosene, mineral oil, liquid food and the like. Background technique [0002] At present, there are many kinds of filters used for fluid filtration such as fuel oil, common fluid filters such as figure 1 with figure 2 as shown, figure 1 For the fluid primary filter, figure 2 It is a fluid secondary filter, and the direction of the arrow in the figure is the direction of fluid flow. in, figure 2 The fluid secondary filter is to add a filter body with similar structure on the basis of the fluid primary filter, so that the fluid can be filtered in two stages, so as to achieve the purpose of multi-stage filtration. However, the structure of this filter is complex and difficult to process; and the connection of the two filter bodies needs to be sealed with bolts, spring washers and flat washers, which is not only inconvenient to use, but also easi...

AI Technical Summary

Problems solved by technology

However, the structure of this filter is complex and difficult to process; and the connection of the two filter bodies needs to be sealed with bolts, spring washers and flat washers, which is not only inconvenient to use, but also easily affects the filtering effect due to poor sealing effect , its material cost and maintenance cost are also greatly increased; at the same time, the filter of this structure makes the flow of the fluid longer, and its pressure loss is also large

In addition, the fluid inlets of the filters currently used for fluid filtration are mostly located below the filter element in the primary filter channel, which is likely to cause the filter residue to fall into the fluid inlet when cleaning the filter element and affect the quality of the original fluid.

Due to the complex structure of the filter, the filter is mostly processed by sand casting. This manufacturing method has poor forming performance and high manufacturing cost. After forming, the filter has a rough appearance and poor quality reliability.

Images