CN215462845U

CN215462845U - Air filter with prefiltering function

Info

Publication number: CN215462845U
Application number: CN202121487807.4U
Authority: CN
Inventors: 刘晓坤; 刘春雷; 李培新
Original assignee: Beijing Anheng Filter Co ltd
Current assignee: Beijing Anheng Filter Co ltd
Priority date: 2021-07-01
Filing date: 2021-07-01
Publication date: 2022-01-11
Anticipated expiration: 2031-07-01

Abstract

The utility model relates to the technical field of air filters, in particular to an air filter with a pre-filtering function. This technical scheme is through setting up rectangular channel and rectangle casing, makes the air that has a large amount of dusts back in getting into the rectangular channel, and the dust that shelters from in making the air of rectangle casing is detained in the rectangle casing, and the effectual dust content that reduces in the air through the filter core prolongs air cleaner's life to reduce the probability that the filter core is blockked up, be favorable to air cleaner can normally filter.

Description

Air filter with prefiltering function

Technical Field

The utility model relates to the field of air filters, in particular to an air filter with a pre-filtering function.

Background

The air filter is a filter, mainly used for filtering air in engineering locomotives, automobiles, agricultural locomotives, laboratories, sterile operation rooms and various precision operation rooms. The prior art discloses partial patent documents related to air filters, and Chinese patent with application number CN200820030321.6 discloses an engine air filter with a detachable and washable pre-filtering cover, which consists of an inner filtering core, an outer filtering core and a base and is characterized in that the outer surface of the outer filtering core is additionally provided with a cylindrical pre-filtering cover.

In the using process of the prior art, a filter cover is usually additionally arranged on the outer side of an air filter, so that the filtering times of air passing are increased, but in the region with severe wind and sand weather, the method is difficult to solve the practical problem, the time required by the air filter to be blocked by dust can be only reduced, the service life of the air filter is shorter, and the normal filtering effect is difficult to ensure.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides an air filter with a pre-filtering function.

In order to achieve the above purposes, the technical scheme adopted by the utility model is as follows: an air filter with a pre-filtering function comprises an upper end cover and a base, wherein a filter element is fixedly connected between the upper end cover and the base, an annular protective net is fixedly connected between the upper end cover and an outer ring of the base, a sealing ring is fixedly connected to the top of the upper end cover, a primary filter ring is fixedly connected to the outside of the upper end cover, a plurality of rectangular grooves are formed in the side surface of the primary filter ring, the bottom of the primary filter ring is connected with a second connecting ring through a directional fixing mechanism, a plurality of strip-shaped rods are fixedly connected to the top of the second connecting ring in a circumferential array manner, a plurality of rectangular shells are fixedly connected to the strip-shaped rods, openings are formed in the upper portions of the rectangular shells, which are far away from the strip-shaped rods, the strip-shaped rods are located between the annular protective net and the rectangular grooves, the rectangular shells correspond to the rectangular grooves in position, and a rigid wind and sand filter screen is fixedly connected between the adjacent strip-shaped rods, and an arc-shaped shunting strip is fixedly connected to the surface of the rigid wind sand filter screen.

Preferably, the directional fixing mechanism comprises two screws and a first connecting ring, the first connecting ring is fixedly connected to the side surface of the primary filter ring and is arranged oppositely, the screws are oppositely arranged on the opposite side surface of the second connecting ring, and the top ends of the screws respectively extend out of the adjacent first connecting rings and are positioned above the primary filter ring and are in threaded connection with nuts.

Preferably, the filter core is the wood pulp material, the filter core is folding fold form and distributes.

Preferably, the cross section of one side of the rectangular shell, which is far away from the bar-shaped rod, is in the shape of an arc, and one side of the rectangular shell, which is far away from the bar-shaped rod, is in contact with the inner side of the primary filter ring.

Preferably, the annular protecting net is made of a steel material with rhombic through holes in the side wall.

Compared with the prior art, the utility model has the following beneficial effects:

1. through setting up rectangular channel and rectangle casing, make the air that has a large amount of dusts after getting into the rectangular channel, through rectangle casing shelter from the dust that makes in the air detain in the rectangle casing, the effectual dust content that reduces in the air through the filter core prolongs air cleaner's life to reduce the probability that the filter core is blockked up, be favorable to air cleaner can normally filter.

2. The screw rod sets up with first connecting ring relatively, makes the intra-annular rectangle casing of second connecting ring be fixed position in just straining the intra-annular, can not rotate in just straining the intra-annular to make the rectangle casing all the time in rectangular groove department, be favorable to being detained the dust, the life of extension filter core, rotate the nut and take off the nut from the screw rod, just can take out the second connecting ring from just straining the ring bottom, thereby wash the rectangle casing, be favorable to rectangle casing recycling.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of the structure at A in FIG. 1 according to the present invention;

FIG. 3 is a schematic cross-sectional view of the present invention;

FIG. 4 is a schematic view of a second attachment ring and bar linkage arrangement in accordance with the present invention;

FIG. 5 is an enlarged view of the structure at B in FIG. 4 according to the present invention;

FIG. 6 is an enlarged side view of the present invention (with the primary filter ring and bar hidden).

In the figure: the device comprises an upper end cover 1, a primary filter ring 2, a rectangular groove 3, a screw rod 4, a first connecting ring 5, a nut 6, a filter element 7, a sealing ring 8, an annular protecting net 9, a second connecting ring 10, a strip-shaped rod 11, a rectangular shell 12, a base 13, a rigid wind-blown sand filter screen 14 and an arc-shaped flow dividing strip 15.

Detailed Description

The following description is presented to disclose the utility model so as to enable any person skilled in the art to practice the utility model. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.

As shown in fig. 1-6, an air cleaner with pre-filtering function comprises an upper end cover 1 and a base 13, a filter element 7 is fixedly connected between the upper end cover 1 and the base 13, the filter element 7 is made of wood pulp, the filter element 7 is distributed in a folding fold shape, an annular protecting net 9 is fixedly connected between the upper end cover 1 and an outer ring of the base 13, the annular protecting net 9 is made of steel material with rhombic side wall through holes, a sealing ring 8 is fixedly connected to the top of the upper end cover 1, a primary filter ring 2 is fixedly connected to the outside of the upper end cover 1, a plurality of rectangular grooves 3 are formed in the side surface of the primary filter ring 2, the bottom of the primary filter ring 2 is connected with a second connecting ring 10 through an orientation fixing mechanism, a plurality of strip-shaped rods 11 are fixedly connected to the top of the second connecting ring 10 in a circumferential array, a plurality of rectangular shells 12 are fixedly connected to the strip-shaped rods 11, the cross section of one side of the rectangular shells 12 far away from the strip-shaped rods 11 is in a circular arc shape, one side that bar pole 11 was kept away from to rectangle casing 12 contacts with the inboard of just straining ring 2, and the top that bar pole 11 one side was kept away from to rectangle casing 12 is provided with the opening, and bar pole 11 all is located between annular protecting wire net 9 and the rectangular channel 3, and the position of rectangle casing 12 and rectangular channel 3 is corresponding, common fixedly connected with rigidity sand blown by the wind filter screen 14 between the adjacent bar pole 11, rigidity sand blown by the wind filter screen 14's fixedly connected with arc reposition of redundant personnel strip 15 on the surface.

The implementation mode is specifically as follows:

in the using process, the primary filter ring 2 is fixedly connected outside the upper end cover 1, air firstly enters through the rectangular groove 3 on the side surface of the primary filter ring 2 between air filters, the strip-shaped rod 11 is arranged between the annular protecting net 9 and the rectangular groove 3, the rectangular shell 12 on the strip-shaped rod 11 and the opening of the rectangular groove 3, after the air with dust enters the rectangular groove 3, the air enters the rectangular shell 12 from the upper opening on one side of the rectangular shell 12, which is far away from the strip-shaped rod 11, can be filtered by the rigid wind sand filter screen 14, the dust is left, after the dust touches the inner wall of the rectangular shell 12, under the action of gravity, the air falls into the rectangular shell 12 along the shunting track of the arc shunting strips 15, the air moves into the air filters from the opening on the upper side of the rectangular shell 12 and is filtered by the filter element 7, and through the arrangement of the rectangular groove 3 and the rectangular shell 12, make the air that has a large amount of dusts back in getting into rectangular channel 3, make the dust in the air detain in rectangular channel 12 through sheltering from of rectangular channel 12, the effectual dust content that reduces in the air through filter core 7 prolongs air cleaner's life to reduce the probability that filter core 7 is blockked up, be favorable to air cleaner can normally filter.

The directional fixing mechanism comprises two screw rods 4 and a first connecting ring 5, the first connecting ring 5 is fixedly connected to the side face of the primary filtering ring 2 and is arranged oppositely, the screw rods 4 are oppositely arranged on the opposite side face of the second connecting ring 10, and the top ends of the screw rods 4 extend out of the adjacent first connecting rings 5 respectively and are positioned above the primary filtering ring 2 and are in threaded connection with nuts 6.

The implementation mode is specifically as follows:

extend the screw rod 4 of second go-between 10 both sides to the top along first go-between 5 bottoms, and it is fixed through nut 6, thereby make second go-between 10 fix in just straining ring 2 bottoms, thereby make bar pole 11 on the second go-between 10 and the rectangle casing 12 on the bar pole 11 be located just straining ring 2, screw rod 4 and first go-between 5 relative settings, make rectangle casing 12 in second go-between 10 be fixed position in just straining ring 2, can not rotate in just straining ring 2, thereby make rectangle casing 12 be in rectangular groove 3 mouth department all the time, be favorable to detaining the dust, the life of extension filter core 7, rotate nut 6 and take off nut 6 from screw rod 4, just can take out second go-between 10 from just straining ring 2 bottoms, thereby wash rectangle casing 12, be favorable to rectangle casing 12 to reuse.

The working principle of the utility model is as follows:

referring to the attached drawings 1-6 of the specification, in the using process, a primary filter ring 2 is fixedly connected outside an upper end cover 1, air firstly enters through a rectangular groove 3 on the side surface of the primary filter ring 2 between air filters, a strip-shaped rod 11 is arranged between an annular protective net 9 and the rectangular groove 3, a rectangular shell 12 on the strip-shaped rod 11 and an opening of the rectangular groove 3 are provided, air with dust enters the rectangular groove 3 and then enters the rectangular shell 12 from an upper opening on one side of the rectangular shell 12, the dust falls into the rectangular shell 12 along the inner wall after hitting the inner wall of the rectangular shell 12, the air moves into the air filters from the upper opening of the rectangular shell 12 and is filtered through a filter element 7, the air with a large amount of dust enters the rectangular groove 3 through the arrangement of the rectangular groove 3 and the rectangular shell 12, the dust in the air is retained in the rectangular shell 12 through the shielding of the rectangular shell 12, the dust content in the air passing through the filter element 7 is effectively reduced, the service life of the air filter is prolonged, the probability that the filter element 7 is blocked is reduced, and the air filter can normally filter.

Extend the screw rod 4 of second go-between 10 both sides to the top along first connecting ring 5 bottom, and it is fixed through nut 6, thereby make second go-between 10 fix in just straining ring 2 bottom, thereby make bar pole 11 on the second go-between 10 and the rectangle casing 12 on the bar pole 11 be located just straining ring 2, screw rod 4 and first connecting ring 5 set up relatively, make rectangle casing 12 in second go-between 10 be fixed position in just straining ring 2, can not rotate in just straining ring 2, thereby make rectangle casing 12 be in rectangular groove 3 mouth department all the time, be favorable to detaining the dust, the life of extension filter core 7, rotate nut 6 and take off nut 6 from screw rod 4, just can take out second go-between 10 from just straining ring 2 bottom, thereby wash rectangle casing 12, be favorable to rectangle casing 12 recycling.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the utility model, but that various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined by the appended claims and their equivalents.

Claims

1. An air filter with a pre-filtering function comprises an upper end cover (1) and a base (13), wherein a filter element (7) is fixedly connected between the upper end cover (1) and the base (13), an annular protecting net (9) is fixedly connected between the outer rings of the upper end cover (1) and the base (13), a sealing ring (8) is fixedly connected to the top of the upper end cover (1), and the air filter is characterized in that a primary filter ring (2) is fixedly connected to the outside of the upper end cover (1), a plurality of rectangular grooves (3) are formed in the side surface of the primary filter ring (2), the bottom of the primary filter ring (2) is connected with a second connecting ring (10) through a directional fixing mechanism, the top of the second connecting ring (10) is fixedly connected with a plurality of strip-shaped rods (11) in a circumferential array manner, a plurality of rectangular shells (12) are fixedly connected to the strip-shaped rods (11), and an opening is formed in the upper part, far away from one side of the strip-shaped rods (11), of the rectangular shells (12), bar pole (11) all are located between annular protecting wire net (9) and rectangular channel (3), the position of rectangle casing (12) and rectangular channel (3) is corresponding, and is adjacent common fixedly connected with rigidity sand blown by the wind filter screen (14) between bar pole (11), rigidity sand blown by the wind filter screen (14) fixed connection has arc reposition of redundant personnel strip (15) on the surface.

2. The air cleaner with the pre-filtering function as recited in claim 1, wherein the directional fixing mechanism comprises two screws (4) and first connecting rings (5), the first connecting rings (5) are fixedly connected to the sides of the primary filtering ring (2) and are oppositely arranged, the screws (4) are oppositely arranged on the opposite sides of the second connecting ring (10), and the top ends of the screws (4) respectively extend out of the adjacent first connecting rings (5) and are positioned above the primary filtering ring (2) and are in threaded connection with nuts (6).

3. The air filter with the pre-filtering function according to claim 1, wherein the filter element (7) is made of wood pulp, and the filter element (7) is distributed in a folded and wrinkled shape.

4. The air cleaner with the pre-filtering function as recited in claim 1, wherein the rectangular casing (12) is circular arc-shaped in cross section at the side far away from the bar-shaped rod (11), and the side of the rectangular casing (12) far away from the bar-shaped rod (11) is in contact with the inner side of the primary filter ring (2).

5. An air cleaner with a pre-filtering function as claimed in claim 1, wherein the annular protecting net (9) is made of steel material with diamond-shaped side wall through holes.