SU1143441A1 - Filter - Google Patents

Abstract

1. FILTER for cleaning liquid and gas, mainly circulating oil in internal combustion engines, comprising a crush housing, spring-loaded coarse and fine filtering elements concentrically mounted in the housing with the possibility of axial movement, characterized by that. that, in order to increase the filter efficiency and filter life, the housing is made in the lower part with an annular protrusion, the FCP-tr is equipped with a perforated cup with the upper edges bent outward, placed between the filtering elements of coarse and fine cleaning and mounted on the body's protrusion, and sealing a ring fixed on the upper end of the coarse filtering element, wherein the diameter of the annular protrusion is larger than the diameter of the cup, and the outer diameter of the sealing ring is equal to the inner diameter of the housing cover. 2. The filter according to Claim 1, which is one of the springs is installed between the sealing ring and the upper edges of the perforated cup.

Description

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4 1. The invention relates to devices for filtering liquids and gases, primarily intended for cleaning circulating oil in internal combustion engines for various purposes, in particular in ships. A filter for cleaning and gas, mainly circulating oil in internal combustion engines, is known, comprising a housing with a cap, spring-loaded coarse and fine filter elements that are concentrically mounted in the housing with the possibility of axial movement ll. The disadvantages of this filter are with a short lifetime and lack of efficiency. The purpose of the invention is to increase the efficiency and lifetime of the filter. The goal is achieved by the fact that, in the filter for cleaning liquid and gas, the predominantly: substantially circulating oil in internal combustion engines, comprising a housing with a lid, spring-loaded coarse and fine filter elements mounted concentrically in the housing with the possibility of axial movement, The lower part with an annular protrusion, the filter is equipped with a perforated cup with upper edges bent outward, placed between the filter elements of coarse and fine cleaning and mounted on the protrusion , and a sealing ring fixed on the upper end of the coarse filtering element, the diameter of the annular protrusion is larger than the diameter of the cup, and the outer diameter of the sealing ring is equal to the inner diameter of the housing cover. One of the springs is installed between the sealing ring and the upper edges of the perforated cup. . A perforated tumbler with outward-bent upper edges, placed between the coarse and fine filtering elements, serves as a coarse filtering element as it moves, and also plays the role of an overflow valve when the pressure reaches the filter over the permissible 12. It can be moved directly by the pressure drop before and after the filter to the area of the lower end surface. At the same time, it performs the functions of the distributor, redistributing the flow of the cleaned fluid from the successive passage of the filter elements to the parallel one, and the increase in the differential pressure over the allowable and joint lift with the perforated cup - the function of the relief valve. the housing also serves as a quality guide cylinder for the sealing ring. Figure 1 shows the filter during the sequential operation of the filter elements of coarse and fine cleaning, general view; Fig. 2 shows the same in the mode of increased pressure drop during parallel operation of coarse and fine filtering elements. The filter includes a housing 1 with an annular protrusion 2 on which a perforated cup 3 with upper outwardly bent edges 4 is centered along tube 5. Inside the cup 3, a filtering element (fine cleaning element 6) is placed, and on the outside of the ledge 2, a coarse filtering element 7, on the upper end of which a sealing ring 8 is fitted, mating with a side surface of the housing 9. The spring 9 and spring 10 are installed between the bottom of the housing 9 and the fine filter element 6. The filter works as follows: In the main period of operation at nominal fluid pressure to the filter, the primary filter element 7 is at the bottom position (Fig. 1) In this case, the pressure of the liquid (equal to the pressure before the filter) on the lower end surface of the filter element 7 of the rough cleaning is balanced by the pressure of the liquid (equal to the pressure after the filter tra) on the sealing ring 8 and the spring 10. In this position, the filter element 7 gru3

cleaning bout all the fluid flow entering the filter passes through the coarse filtering element 7, then fine cleaning 6. Thus, the coarse and fine filtering elements work sequentially.

When the filter elements 6 and 7 are contaminated, the pressure before the filter increases. At the same time, the coarse filtering element, overcoming the force of the spring 10 and the fluid pressure on the sealing ring 8, will begin to move upwards. At the time of removal of the filter element 7 from the annular protrusion 2 due to an increase in the area of the lower end surface of the filter element 7, the force for lifting the latter increases dramatically and it moves to the upper position (Fig. 2).

In this part of the fluid flow passes through the filter element 7 coarse and perforated glass 3, and the other part directly through the filter element 6 fine cleaning. Thus, parallel operation of the filter elements is carried out.

When the fluid pressure rises up to the super-acceptable filter, the coarse filtering element 7 will move to the uppermost position and the sealing ring 8 will abut the edges 4 and raise the perforated cup 3 which will lead to free flow of the liquid.

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liquids, in addition to the filter, is carried out without special overflow valves.

The advantage of the proposed device is a longer period of maintenance-free operation of the filter, due to a more rational distribution of the slurry (dirt) load on the filter elements coarse and thin

cleaning, which is achieved by consistent operation of coarse and fine filter elements during the nominal pressure drop period

and on the filter and the parallel operation of the filter elements when they are contaminated.

In addition, the filtration efficiency is improved, which is achieved

2Q also thanks to the consistent

the work of filtering elements of various finer points of screening, as a result of which there is a more rational use of the structural characteristics

25 Filter materials and increased likelihood of particle contamination. And when parallel operation of coarse and fine filtering elements, the filtration efficiency practically does not decrease, since by the time of switching on the filtering elements there will be a layer of sediment that increases the dropout rate.

The economic effect is achieved by reducing the operating costs of servicing the filter, engines and saving fuel and lubricants.

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FIG, g

Claims (2)

1. FILTER for cleaning liquid and gas, mainly circulating oil in internal combustion engines, comprising a housing with a cover, spring-loaded filter elements of coarse and fine cleaning, concentrically mounted in the housing with the possibility of axial movement, characterized in that, in order to increase efficiency and time filter operation, the housing is made in the lower part with an annular protrusion, fil'-tr is equipped with a perforated glass with upper edges bent outward, located between the filter elements of the coarse and onkoy purification and mounted on the housing ledge and the sealing ring mounted on the upper end of the coarse filter element, wherein the diameter of the annular protrusion more glass diameter and the outer diameter of the sealing ring is the inner diameter of the housing cover. 2. The filter according to claim 1, characterized in that one of the springs is installed between the sealing ring and the upper edges of the perforated cup.