CN212027950U

CN212027950U - Air prefilter

Info

Publication number: CN212027950U
Application number: CN202020715735.3U
Authority: CN
Inventors: 彭安吉; 曾理
Original assignee: Chongqing Langrun Electromechanical Co ltd
Current assignee: Chongqing Langrun Electromechanical Co ltd
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2020-11-27
Anticipated expiration: 2030-04-30

Abstract

The utility model relates to an engine advances air pretreatment technical field, specifically discloses an air prefilter, including the shell body that is the closure state, the shell body is equipped with the filter core structure that is located the section of admitting air in including the section of admitting air and exhaust section in the shell body, filter core structure and exhaust section intercommunication, be equipped with the air inlet of the section of admitting air of intercommunication and the blast pipe of the section of intercommunication exhaust on the shell body. Adopt the technical scheme in this patent if will clear up, then only need to clear up the prefilter can, need not to unpack the more complicated empty filter of structure apart, more save the time of clearing up.

Description

Air prefilter

Technical Field

The utility model relates to an engine advance air treatment technical field, in particular to air prefilter.

Background

When the engine or the internal combustion engine works, air is needed to work, the air usually contains dust, even under some severe working conditions, a large amount of particle impurities are also contained, and the particle impurities or the dust is sucked into the engine or the internal combustion engine and erodes the engine or the internal combustion engine, so that the service life of the engine or the internal combustion engine is shortened, and the stable operation of the engine or the internal combustion engine is influenced.

Therefore, in order to provide clean air for these power equipments, an air filter is usually installed at the air inlet of the engine or internal combustion engine, and a secondary or even a fourth stage air filter is also used to improve the filtering effect, and in order to ensure the normal use of the air filter, the air filter needs to be cleaned at certain intervals, and due to the large particle size of the particulate impurities in the air, the filter element in the air filter is easily blocked, so that the cleaning period is shortened, and frequent cleaning is needed.

SUMMERY OF THE UTILITY MODEL

The utility model provides an air prefilter to solve current multistage empty filter when filtering large granule impurity, the clearance is frequent, is difficult to the clearance and makes the long problem of consuming time.

In order to achieve the above purpose, the technical scheme of the utility model is that:

the utility model provides an air prefilter, is including the shell body that is the encapsulated situation, the shell body is equipped with the filter core structure that is located the section of admitting air in including the section of admitting air and exhaust section in the shell body, filter core structure and exhaust section intercommunication, be equipped with the air inlet of the section of admitting air of intercommunication and the blast pipe of the section of intercommunication exhaust on the shell body.

The technical principle and the effect of the technical scheme are as follows:

in this scheme, the air is discharged from the air inlet, through filter core structure, and large granule impurity has been stayed in the section of admitting air, and the air after the filtration is discharged through the blast pipe on the exhaust section, gets into empty filter in, further filters again, this filtration that is to say is exactly the colating, and if will clear up, so only need to clear up the prefilter can, need not to unpack the more complicated empty filter of structure apart.

Furthermore, a grid plate is fixed in the air inlet.

Has the advantages that: the arrangement of the grid plate can prevent larger objects in the air from being sucked, so that the whole prefilter can work normally.

Further, the air inlet section is detachably connected with the air exhaust section.

Has the advantages that: thus, the particle impurities in the air inlet section can be conveniently cleaned.

Further, the outside of section of admitting air is fixed with cyclic annular step, a plurality of bayonets have been seted up on the cyclic annular step, the end fixing of exhaust section has a spacing collar, be fixed with a plurality of card strips on the inner wall of spacing collar, the card strip can the chucking in the bayonet socket.

Has the advantages that: through the cooperation of card strip and bayonet socket, be convenient for install and dismantle.

Furthermore, the outer shell is conical, wherein the air inlet section is a small-diameter section, and the air outlet section is a large-diameter section.

Has the advantages that: the arrangement enables the airflow entering the air inlet section to rapidly enter the large-diameter section.

Furthermore, the tip of air inlet section is equipped with the water conservancy diversion and caves in, still is equipped with the ash discharge mouth on the lateral wall that the air inlet section is close to the tip, the ash discharge mouth with the inside intercommunication of air inlet section.

Has the advantages that: the arrangement of the diversion recess enables airflow rotation to be generated in the air inlet section, and the airflow rotation enables dust to be automatically discharged from the dust discharge port.

Further, the filter element structure comprises a filter element shell and a mounting disc, a plurality of filter holes are formed in the filter element shell, the mounting disc is fixed to the outer wall of the filter element shell, and the mounting disc is clamped between the air inlet section and the air exhaust section.

Has the advantages that: set up like this and make filter core structure detachable connect between air inlet section and exhaust section, be convenient for to filter core structure's clearance or change.

Further, the longitudinal section of the filter element shell is conical, and the large-diameter end of the filter element shell faces the exhaust section.

Has the advantages that: this allows the air stream entering the cartridge housing to pass quickly into the exhaust section.

Further, still be equipped with the filter pulp between mounting disc and the exhaust section.

Has the advantages that: the arrangement of the filter cotton filters the air flow after rough filtration again, and simultaneously prevents dust of coarse particles from being discharged from the exhaust pipe.

Furthermore, a plurality of reinforcing strips are fixed in the exhaust section, and the free ends of the reinforcing strips are tightly propped against the filter cotton.

Has the advantages that: both improved the intensity of exhaust section like this, improved its resistant air current impact nature promptly, also supported the filter pulp tightly simultaneously to make filter core structure more stable.

Drawings

Fig. 1 is an exploded view of embodiment 1 and embodiment 2 of the present invention;

fig. 2 is a cross-sectional view of the embodiment 1 and the embodiment 2 of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises an outer shell 1, an air inlet section 2, an air outlet section 3, a flow guide recess 4, an ash discharge port 41, an annular step 5, a bayonet 6, a limiting ring 7, a clamping strip 8, an air inlet 9, an exhaust pipe 10, a grid plate 11, a filter element shell 12, a mounting disc 13, a support strip 14, filter cotton 15, a mounting seat 16 and an internal threaded hole 17.

Example 1 is substantially as shown in figures 1 and 2 of the accompanying drawings:

the utility model provides an air prefilter, including the shell body 1 that is the encapsulated situation, the longitudinal section of shell body 1 is conical, wherein shell body 1 is including air intake section 2 and exhaust section 3, wherein air intake section 2 is the path section of shell body 1, and exhaust section 3 is the big path section of shell body 1, it is sunken 4 to be equipped with the water conservancy diversion at the tip of air intake section 2, air intake section 2 still is equipped with ash discharge port 41 on being close to the lateral wall of tip, ash discharge port 41 and air intake section 2's inside intercommunication, be equipped with the filter core structure that is located air intake section 2 in the shell body 1, for the convenience of the clearance particle impurity in air intake section 2, air intake section 2 and exhaust section 3 are for dismantling and be connected.

Specifically, an annular step 5 is integrally formed on the outer wall of the air inlet section 2, a plurality of bayonets 6 are formed in the annular step 5, a limiting ring 7 is integrally formed at the end of the exhaust section 3, a plurality of clamping strips 8 are arranged on the inner wall of the limiting ring 7, and the clamping strips 8 can be clamped in the bayonets 6.

An air inlet 9 communicated with the air inlet section 2 and an exhaust pipe 10 communicated with the exhaust section 3 are arranged on the outer shell 1, in order to prevent larger objects from being sucked, therefore, a grid plate 11 is fixed at the air inlet 9, the filter element structure in the embodiment comprises a filter element shell 12 and a mounting disc 13, wherein a plurality of filter holes are arranged on the filter element shell 12, in order to ensure the strength of the filter element shell 12, the filter holes are not completely distributed on the filter element shell 12, in particular, a plurality of open hole areas and non-hole areas are arranged on the filter element shell 12, the open hole areas and the non-hole areas are arranged at intervals, but a part of the area on the filter element shell 12 is absent, the mounting disc 13 is fixed on the outer wall of the filter element shell 12, the mounting disc 13 is clamped between the air inlet section 2 and the exhaust section 3, in particular, the longitudinal section of the mounting disc 13 is in a T-shaped table shape, wherein the outer edge of the mounting disc 13 is clamped between the exhaust section 3 and the air inlet section, a plurality of supporting strips 14 are integrally formed in the exhaust section 3, the supporting strips 14 are parallel to the central axis of the outer shell 1, and filter cotton 15 is clamped between the supporting strips 14 and the mounting disc 13.

When the pre-filter is used, the pre-filter is installed on the air filter, namely the exhaust pipe 10 of the pre-filter is communicated with the air inlet end of the air filter, so that when the power equipment works, outside air firstly enters the air inlet section 2 through the air inlet 9 and then enters the filter element shell 12, large particle impurities are left in the air inlet section 2 under the blocking of the filter holes, and the filtered air enters the air filter from the exhaust pipe 10 through the exhaust section 3, so that the rough filtration is completed.

The airflow entering the air inlet section 2 partially rotates under the action of the flow guide recess 4, and the rotation of the airflow automatically discharges dust from the dust discharge port 41.

And when needing to clear up it, only need open the section of admitting air 2 with exhaust section can, very quick clearance that just can accomplish large granule impurity.

Example 2 is substantially as shown in figures 1 and 2 of the accompanying drawings:

the difference from example 1 is that: a connecting seam is formed in the outer wall of the exhaust pipe 10 along the axial direction of the exhaust pipe, two mounting seats 16 which are respectively positioned on two sides of the connecting seam are integrally formed on the exhaust pipe 10, and an internal thread hole 17 is formed in each mounting seat 16; during the installation, overlap blast pipe 10 in the intake pipe of empty filter, fix two connecting seats through bolt and lock nut to make fixing in the intake pipe that blast pipe 10 can be firm, also convenient dismantlement and installation when needs clearance simultaneously.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. An air precleaner, comprising: including the shell body that is the encapsulated situation, the shell body is equipped with the filter core structure that is located the section of admitting air in including the section of admitting air and the section of exhausting in the shell body, filter core structure and the section intercommunication of exhausting, be equipped with the air inlet of the section of admitting air of intercommunication and the blast pipe of the section of exhausting of intercommunication on the shell body.

2. An air precleaner according to claim 1, wherein: a grid plate is fixed in the air inlet.

3. An air precleaner according to claim 1, wherein: the air inlet section is detachably connected with the air exhaust section.

4. An air precleaner according to claim 3, wherein: the outside of air inlet section is fixed with cyclic annular step, a plurality of bayonets have been seted up on the cyclic annular step, the end fixing of exhaust section has the spacing collar, be fixed with a plurality of card strips on the inner wall of spacing collar, the card strip can the chucking in the bayonet socket.

5. An air precleaner according to claim 4, wherein: the outer shell is conical, wherein the air inlet section is a small-diameter section, and the air outlet section is a large-diameter section.

6. An air precleaner according to claim 5, wherein: the tip of air inlet section is equipped with the water conservancy diversion and caves in, still is equipped with the ash discharge mouth on the lateral wall that the air inlet section is close to the tip, the ash discharge mouth with the inside intercommunication of air inlet section.

7. An air precleaner according to claim 6, wherein: the filter element structure comprises a filter element shell and a mounting disc, wherein a plurality of filter holes are formed in the filter element shell, the mounting disc is fixed on the outer wall of the filter element shell, and the mounting disc is clamped between the air inlet section and the air exhaust section.

8. An air precleaner according to claim 7, wherein: the longitudinal section of the filter element shell is conical, and the large-diameter end of the filter element shell faces the exhaust section.

9. An air precleaner according to claim 8, wherein: and filter cotton is also arranged between the mounting disc and the exhaust section.

10. An air precleaner according to claim 9, wherein: a plurality of reinforcing strips are fixed in the exhaust section, and the free ends of the reinforcing strips are tightly propped against the filter cotton.