Improved removable spin-on filter and method for filtering fluids

Abstract

The invention relates to an improved, detachable and rotatably-installed filter which comprises a filter shell, a coupling head, a filter element and a by-pass valve, wherein a sealing gasket is arranged between the coupling head and the filter shell; the cross section of the coupling head is T-shaped, and the coupling head comprises a first barrel body arranged at the upper side and a second barrel body arranged at the lower side; the outer diameter of the first barrel body is greater than that of the second barrel body; the center of the coupling head is provided with a center hole; the middle lower part of the center hole is provided with the by-pass valve; the first barrel body is vertically provided with a plurality of oil inlets; the oil inlets are formed in the periphery of the outer side of the center hole; the second barrel body is transversely provided with a plurality of through holes communicated with the center hole; the second barrel body extends to the middle lower part of the filter shell; the filter element comprises a filter material and an end cover; the center of the filter element is provided with an inner hole, and the filter element sleeves the second barrel body by virtue of the inner hole. By virtue of adopting the structure, the improved, detachable and rotatably-installed filter is convenient to install and detach. The invention also discloses a fluid filtration method of the filter. The improved detachable rotatable filter is good in overflowing effect.

Description

technical field [0001] The invention belongs to the field of filters, and in particular relates to an improved detachable spin-on filter and a method for filtering fluid thereof. Background technique [0002] The spin-on filter is a type of filter developed in the 1970s with filter paper as the filter material. The spin-on filter is compact in structure, light in weight, reliable in use, and convenient in maintenance. It is widely used in engines and hydraulic pressure on the system. According to the incomplete statistics of existing data, more than 90% of the spin-on filters are used on automobile engines, and more than 80% of them are used on construction machinery engines. [0003] But the spin-on filter also has obvious defects, such as figure 1 As shown, the spin-on filter generally includes a sealing ring 1, a threaded cover plate 2, a filter housing 3, a filter element 4 and a spring 5, and the filter element 4 includes an inner frame 42, a bypass valve 43, a filter...

AI Technical Summary

Problems solved by technology

[0008] The purpose of this invention is to provide an improved detachable spin-on filter to solve the problem of inconvenient installation of the existing spin-on filter

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