RU173319U1 - Filter for air purification in internal combustion engines - Google Patents

Abstract

The invention relates to the field of purification of industrial gases and air, in particular for purifying the air of internal combustion engines, in particular automobile and tractor engines. The technical result is achieved in that the filter for purifying air in internal combustion engines contains a housing with a cover attached to the engine and installed in the housing, a filter element made in the form of concentrically arranged external and internal perforated cylinders, between which a multi-beam paper is placed a curtain, upper and lower elastic caps, rigidly mounted on the ends of perforated cylinders, and a filter cloth made in the form of a tubular knit from polymer inextensible and elastomeric threads and placed on the outer surface of the outer cylinder, while the tubular knit is made by combined weaving of an eraser 2 + 2 and the smoothness knitted on the front and back sides of the eraser in 8 looped rows of polypropylene yarn. The technical result is to improve the quality of air purification and increase longer filter life.

Description

The utility model relates to the field of purification of industrial gases and air, in particular for air purification of internal combustion engines, in particular automobile and tractor engines.

A known filter for air purification, comprising a housing attached to the engine with a cover and a filter element mounted in the housing, made in the form of concentrically arranged external and internal cylinders, between which a multi-beam paper curtain is placed, elastic caps upper and lower from self-hardening sealant, rigidly mounted on perforated cylinders, and non-woven synthetic material (Multicolor album ʺAutomobiles VA3-2108, BA3-2109ʺ. - M., 1989, p. 34-35).

However, such a filter has a short service life due to poor regeneration, as the filter multi-beam paper curtain is damaged, which reduces the filter service life and degrades the quality of cleaning.

Known filter material, made in the form of a single integumentary knitwear made of polymer threads, in which one of the sides of the filter surface contains pile elements. In the structure of such a filter material, an elastomeric thread forms an elastic cage providing variable permeability during filtration and regeneration, and an inextensible thread creates a filter surface (Patent RU 1437076, B01D 39/08, 11/15/1988).

However, such filter materials in the process of operation are twisted, forming enlarged pores along the edges, which affects the quality of the filter. There is a possibility of abrasive wear of the engine cylinders and fuel consumption increases sharply.

Known filter element made in the form of a sleeve of elastic material, the manufacture of which uses non-woven artificial fiber used in an air cleaner for an internal combustion engine containing a cylindrical body with a dust hopper, a cylindrical filter element with outer and inner perforated shells, upper and lower end faces lids (Patent RU 2015404, F02M 35/02, 06/30/1994).

However, the filter material from non-woven material is poorly regenerated, since it has pores of constant size both during filtration and during cleaning, which reduces the cleaning performance and quality.

A known filter for air purification in internal combustion engines, comprising a housing attached to the engine with a cover and a filter element mounted in the housing, made in the form of concentrically arranged external and internal perforated cylinders, between which there is a multi-beam paper curtain, upper and lower elastic covers, rigidly installed at the ends of perforated cylinders, and a non-woven synthetic filter cloth made of lavsan and linen fibers and placed on the bunk the surface of the outer cylinder, and is equipped with textile fabric tapes made of heat-resistant nylon threads, one of which is located outside on a non-woven filter cloth, and the other between the multi-beam paper curtain and the side surface of the inner perforated cylinder (Patent RU 2079336, IPC B01D 27/00, B01D 46 / 00, 05.20.1997).

The reasons that impede the achievement of the required technical result are the difficulty in manufacturing such a filter, which makes it difficult to quickly service a vehicle in an emergency, poor regeneration of the filter material, which affects the quality of air purification and reduces the service life of the filter.

A known filter for cleaning air from dust, comprising a housing, air supply and air exhaust units, a filter element located inside the housing, made of a filter cloth bent by a zigzag with the formation of upper and lower ribs and equipped with end filter inserts, and sealed relative to dusty and cleaned zones air around the perimeter due to the flanging of the edges of the filter cloth and filter inserts (Patent RU 2188063, IPC B01D 46/02, B01D 46/52, 08/27/2002).

However, the used filter cloth does not provide high performance air purification process, as it has a low dust-holding ability.

The closest is a filter for air purification in internal combustion engines, comprising a housing attached to the engine with a cover and a filter element mounted in the housing, made in the form of concentrically arranged external and internal perforated cylinders, between which a multi-beam paper curtain, upper and lower elastic covers are placed, rigidly mounted on the ends of perforated cylinders and a filter cloth placed on the outer surface of the outer cylinder and made in the form tubular knitwear made of polymer inextensible and elastomeric yarns, in the structure of which the elastomeric yarn is located between the loops of inextensible yarns in the form of a footer with alternation through one loop and knitted into loops with inextensible thread with alternation: through 4-8 loops - looped loop and 3 -5 rows - along the looper row, and the loop module of inextensible thread is 3.4 times larger than the loop module of elastomeric thread (RF Patent 2135264, IPC B01D 46/52, B01D 39/08, F02M 35/02, 08/27/1999) .

However, the low density of the filter cloth does not provide protection from small, suspended particles and does not provide resistance to the action of air flows, as a result of which its permeability rapidly increases during operation and, accordingly, the efficiency decreases.

The objective of the utility model is to develop a filter for air purification in internal combustion engines, which has high performance properties throughout its entire life.

The technical result is to improve the quality of air purification and increase the life of the filter.

The technical result is achieved in that the filter for air purification in internal combustion engines contains a housing attached to the engine with a cover and a filter element mounted in the housing, made in the form of concentrically arranged external and internal perforated cylinders, between which there is a multi-beam paper curtain, upper and lower elastic caps rigidly mounted on the ends of perforated cylinders and a filter cloth made in the form of a tubular knit made of polymer non-growing of pressing and elastomeric yarns and an outer cylinder placed on the outer surface, while the tubular knit is made by combining the 2 + 2 eraser and the smoothness knitted on the front and back of the eraser in 8 looped rows of polypropylene yarn.

The implementation of the filter for air purification in internal combustion engines with a filter cloth in the form of tubular knitwear made of polymer inextensible and elastomeric yarns by combined weaving of an eraser 2 + 2 and a smooth knit on the front and back side of the eraser in 8 looped rows of polypropylene yarn, improves the quality of cleaning air and increased filter life due to more effective protection against small, suspended particles and the possibility of its regeneration. The presence of a 2 + 2 eraser from simultaneously knitted inextensible and elastomeric threads provides a more efficient capture of mechanical impurities due to the denser loop structure of the two-layer weave, and the presence of a smooth knit on the front and back side of the eraser in 8 loop rows of inextensible polypropylene thread provides from the front side more efficient capture of mechanical impurities, thereby protecting the inner layers from clogging of pores, performing the functions of a prefilter, and from the wrong side - increase density of the hinge structure. In addition, the implementation of a filter cloth in the form of a tubular knit made of polymer inextensible and elastomeric yarns by combined weaving of an eraser 2 + 2 and a surface knitted on the front and back side of the eraser in 8 looped rows of polypropylene yarn allows its regeneration. All this provides an increase in the quality of air purification and an increase in the life of the filter.

In FIG. 1 shows a General view in section of a filter for air purification in internal combustion engines.

In FIG. Figure 2 shows a graphical record of the combined weaving of the eraser 2 + 2 and the surface knitted on the front side of the eraser in 8 looped rows.

The filter for air purification in internal combustion engines contains a housing 1 attached to the engine with a cover 2 and a filter element 3 mounted in the housing 1. The filter element 3 is made in the form of concentrically arranged external perforated cylinder 4 and internal perforated cylinder 5, between which is placed multipath paper curtain 6. At the ends of the perforated cylinders 4 and 5, the upper and lower elastic covers 7 and 8 are rigidly mounted (respectively). On the outer surface of the outer perforated cylinder 4 there is a filter cloth 9 fixed to the upper 7 and lower 8 by elastic covers.

The filter cloth 9 is made in the form of a tubular knit from polymer inextensible and elastomeric threads. The tubular knit 9 is made by combining the eraser 2 + 2 by simultaneously knitting the polypropylene yarn 10 (inextensible yarn) and polyurethane yarn 11 (elastomeric yarn) and smooth, knitted on the front and back of the eraser in 8 looped rows of polypropylene yarn 10.

Tubular knitwear with a combined weave is knitted on a class 14 flat-wing machine, by turning off the adjacent needle bar lock systems when knitting eight stitch rows by weaving a smooth surface, respectively, on the front loops of the eraser and the wrong loops of the eraser. Thus, from each loop of the eraser, the first row of the surface starts and on it ends the knitting of the surface, the knitting of the last eighth loop. The cycle (row of the eraser 2 + 2 and 8 rows of smoothness from each loop of the front and back sides of the eraser) is repeated in each loop series. Thus, on the front and back surface of the tubular knitwear with an eraser 2 + 2 interlacing, in each row, transverse tubes of interweaving smoothness are formed, which form folds.

In this case, at the end of knitting, a cylindrical knitted product is formed - a filter cloth 9, containing smooth surface on the outer (front) and inner (wrong) surfaces of the fold 12.

The filter cloth 9 is put on the exterior of the perforated cylinder 4 and secured using the upper 7 and lower 8 elastic covers. Then the filter element is installed in the housing 1 of the filter.

The filter for air purification in internal combustion engines works as follows.

The air passing through the pores of the knitted filter cloth 9, receives a preliminary cleaning not only from large mechanical particles, but also from small, suspended particles. At the same time, the dense folds formed on the outer surface 12 by the surface weave retain mechanical particles, thereby protecting the inner layer of knitwear - the eraser - from clogging pores (acting as a prefilter) and, together with the dense folds 12 on the inner surface and the eraser, provide more efficient capture of mechanical impurities due to the denser loop structure of the two-layer combined weave.

Then, passing through the multi-beam paper curtain 6, the air gets finer cleaning and enters the carburetor to form an air-gasoline mixture. When cleaning air, the filter cloth 9 on the surface of the cylinder 4 is in a dense state, which ensures high-quality air cleaning.

Stretched elastomeric threads 11 in the structure of the fabric provide a snug fit loops to the surface of the filter. During the regeneration of the filter cloth, the loop structure is stretched in the longitudinal and transverse directions, which allows to increase the pores, and with the help of the reverse air flow, the retained mechanical particles are easily removed from the pores of the filter cloth.

Thus, a filter for air purification in internal combustion engines, comprising a housing attached to the engine with a cover and a filter element mounted in the housing, is fitted with a filter cloth on the outer perforated cylinder made in the form of a tubular knit made of polymer inextensible and elastomeric threads with a combined weave of an eraser 2 +2 and the surface knitted on the front and back side of the eraser in 8 looped rows of polypropylene yarn provides improved air cleaning and increased filter life.

Claims (1)

A filter for air purification in internal combustion engines, comprising a housing attached to the engine with a cover and a filter element mounted in the housing, made in the form of concentrically arranged external and internal perforated cylinders, between which a multi-beam paper curtain, upper and lower elastic covers rigidly mounted on the ends of the perforated cylinders, and the filter cloth, made in the form of tubular knitwear from polymer inextensible and elastomeric threads and placed o on the outer surface of the outer cylinder, characterized in that the tubular knit is made by a combined weaving of the eraser 2 + 2 and smooth, knitted on the front and back sides of the eraser in 8 looped rows of polypropylene thread.

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