CN216878409U

CN216878409U - Compressed air filter with bypass valve

Info

Publication number: CN216878409U
Application number: CN202220255901.5U
Authority: CN
Inventors: 娄新胜; 郭拥军; 乔国平; 李汶东; 吕东; 陈倩; 郭志英; 王婧媛
Original assignee: Xinjiang Ai Cleaning Technology Co ltd
Current assignee: Xinjiang Ai Cleaning Technology Co ltd
Priority date: 2022-02-08
Filing date: 2022-02-08
Publication date: 2022-07-05
Anticipated expiration: 2032-02-08

Abstract

The utility model discloses a compressed air filter with a bypass valve, which comprises an upper shell; the lower part of the upper shell is connected with the lower shell; two sides of the upper shell are respectively connected with an air inlet pipe and an air outlet pipe; the upper part of the upper shell is connected with a screw plug, the lower end of the screw plug is connected with a spring, the lower end of the spring is sleeved with a valve, and the valve is abutted against an opening in the upper end of the upper shell; a filter element is arranged in the lower shell, and the upper end of the filter element is connected with the lower end of the upper shell; the air inlet pipe and the air outlet pipe are communicated with the lower shell. When the pressure difference in the compressed air filter is too large or is blocked, the air flow in the upper shell jacks up the valve through the bypass air inlet hole and then is discharged through the bypass air outlet hole and the air outlet, so that the smoothness of the tail gas post-treatment injection system is kept, and the failure of the tail gas post-treatment system is avoided; the filter element is a bonding structure consisting of an end cover and a filter layer and is in threaded connection with the upper shell through the end cover so as to be convenient for replacing the filter element.

Description

Compressed air filter with bypass valve

Technical Field

The utility model relates to the technical field of vehicle exhaust aftertreatment, in particular to a compressed air filter with a bypass valve.

Background

With the rapid increase of automobile ownership in China, the pollution of automobile exhaust to the environment is more and more serious. Automobile exhaust, one of the main sources of air pollution, contains a large amount of harmful substances including carbon monoxide, nitrogen oxides, hydrocarbons, solid suspended particles, and the like; automobile exhaust is one of the main sources of PM2.5 in large cities, and is one of the main causes of atmospheric pollution in many cities.

Compressed air filter plays crucial effect in tail gas aftertreatment system, and current compressed air filter is difficult for the installation, dismantles and washs, causes the granule dust to pile up after long-term the use easily, blocks up the filter core, perhaps under the extreme condition of the low temperature (below 0 ℃) that influences exhaust and the condition that end user can not in time maintain, can cause the inside pressure differential of compressed air filter too big or stifled die, will cause tail gas aftertreatment injection system atmospheric pressure not enough, finally leads to tail gas aftertreatment system inefficacy.

SUMMERY OF THE UTILITY MODEL

The utility model aims to: in order to solve the problems in the background art, the utility model provides a compressed air filter with a bypass valve.

In order to achieve the purpose, the utility model provides the following technical scheme:

a compressed air filter with a bypass valve comprises an upper shell;

the lower part of the upper shell is connected with the lower shell;

the two sides of the upper shell are respectively connected with an air inlet pipe and an air outlet pipe;

the upper part of the upper shell is connected with a screw plug, the lower end of the screw plug is connected with a spring, the lower end of the spring is sleeved with a valve, and the valve is abutted against an opening in the upper end of the upper shell;

a filter element is arranged in the lower shell, and the upper end of the filter element is connected with the lower end of the upper shell;

the air inlet pipe and the air outlet pipe are communicated with the lower shell.

Preferably, the upper end of the upper groove is provided with an internal thread, and the plug screw is connected with the upper end of the upper groove in a threaded manner; the left end of the left groove is provided with internal threads, and the air inlet pipe is in threaded connection with the left end of the left groove; the right end of the right groove is provided with internal threads, and the air outlet pipe is in threaded connection with the right end of the right groove; the lower groove I is positioned on the inner side of the lower groove II, internal threads are respectively formed at the lower ends of the lower groove I and the lower groove II, the upper end of the lower shell is in threaded connection with the lower groove II, and the upper end of the filter element is in threaded connection with the lower groove I.

Preferably, the bottom of the lower shell is provided with a through hole, and the air release valve assembly is arranged at the through hole.

Preferably, the filter element comprises an end cover and a filter layer, the end cover is in threaded connection with the lower groove, the filter layer is of a U-shaped cylindrical structure, and the filter layer is in adhesive connection with the end cover.

Preferably, the joints of the air inlet pipe and the air outlet pipe are both provided with quick joints which can be matched with the quick connector.

Preferably, the plug screw is a hexagon socket head cap screw.

Preferably, the outside cover of gassing valve subassembly is equipped with sealing washer one, the outside of intake pipe and outlet duct is all overlapped and is equipped with sealing washer three, the outside cover of plug screw is equipped with sealing washer four the outside cover of casing is equipped with sealing washer two down, and wherein sealing washer one, sealing washer two, sealing washer three, sealing washer four are the rubber material.

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

1. when the compressed air filter with the bypass valve provided by the utility model normally works, compressed air of a tail gas aftertreatment injection system enters from the air inlet pipe of the upper shell, solid impurities, water and oil in the compressed air are filtered by the filter element, and clean compressed air is discharged from the air outlet pipe of the upper shell; wherein, go up the casing and carry out swing joint through the screw thread with lower casing, the filter core sets to the bonding structure who comprises end cover and filtering layer, carries out threaded connection through the end cover with the low groove of casing one down, and the setting of above structure makes things convenient for compressed air filter's dismantlement and washing to and be convenient for change the filter core.

2. The upper portion threaded connection of going up the casing has the plug screw, the lower extreme fixedly connected with spring of plug screw, the lower extreme of spring has cup jointed the valve, the valve butt the opening of bypass inlet port on last casing, when the inside pressure differential of compressed air filter is too big or stifled die, the gas in the compressed air filter passes through the bypass inlet port and after jack-up the valve, discharges through bypass venthole and gas outlet, and then keeps tail gas aftertreatment injection system's unblocked, avoids tail gas aftertreatment system to lose efficacy.

3. The bottom of the lower shell is provided with a vent valve assembly, and when a filter element is replaced by maintenance personnel, the compressed air filter is deflated through the vent valve assembly, so that the safety of the maintenance personnel is ensured.

4. The connector of the air inlet pipe and the air outlet pipe is provided with a quick connector which can be matched with a quick connector, so that the compressed air filter can be conveniently mounted and dismounted.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a front view of the present invention;

FIG. 2 is a cross-sectional view taken along the line A-A of the present invention;

FIG. 3 is a schematic view of the gas flow direction of the present invention;

in the figure: 1. a plug screw; 2. a spring; 3. a shutter; 4. an upper housing; 5. an air inlet pipe; 6. an air outlet pipe; 7. a lower housing; 8. a bleed valve assembly; 9. a filter element; 10. an air inlet; 11. an air outlet; 12. a left groove; 13. a right groove; 14. a bypass air inlet; 15. an upper groove; 16. a bypass air outlet hole; 17. a first sealing ring; 18. a second sealing ring; 19. a third sealing ring; 20. a fourth sealing ring; 21. a sealing ring V; 22. a first lower groove; 23. and a second lower groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-3, the compressed air filter with a bypass valve provided by the utility model comprises a plug screw 1, an upper shell 4, an air inlet pipe 5, an air outlet pipe 6, a lower shell 7 and a filter element 9; the lower portion of the upper shell 4 is in threaded connection with the lower shell 7, the left side and the right side of the upper shell are in threaded connection with the air inlet pipe 5 and the air outlet pipe 6 respectively, the air inlet pipe 5 and the air outlet pipe 6 are communicated with the lower shell 7, and the interfaces of the air inlet pipe 5 and the air outlet pipe 6 are both set to be fast interfaces and can be matched with a fast connector.

The upper part of the upper shell is in threaded connection with the screw plug 1, the screw plug 1 is an inner hexagonal screw plug, the lower end of the screw plug 1 is fixedly connected with a spring 2, and the lower end of the spring 2 is sleeved with a valve 3; the filter element 9 is positioned inside the lower case 7, and the upper end of the filter element 9 is screwed with the lower end of the upper case 4.

As shown in fig. 2, an upper groove 15 is formed in the upper portion of the upper housing 4, an internal thread is formed at the upper end of the upper groove 15, and the plug screw 1 is connected to the upper end of the upper groove 15 in a threaded manner; the lower part of the upper shell 4 is provided with a first lower groove 22 and a second lower groove 23, the first lower groove 22 is positioned on the inner side of the second lower groove 23, the lower ends of the first lower groove 22 and the second lower groove 23 are respectively provided with internal threads, the upper end of the lower shell 7 is in threaded connection with the second lower groove 23, the filter element 9 comprises an end cover and a filter layer, the filter layer is in a U-shaped cylindrical structure and is in adhesive connection with the end cover, and the end cover is in threaded connection with the first lower groove 22; a left groove 12 is formed in the left side of the upper shell 4, internal threads are formed in the left end of the left groove 12, and the air inlet pipe 5 is connected to the left end of the left groove 12 in a threaded mode; a right groove 13 is formed in the right side of the base, internal threads are formed in the right end of the right groove 13, and the air outlet pipe 6 is connected to the right end of the right groove 13 in a threaded mode; a bypass air inlet hole 14 and a bypass air outlet hole 16 are further formed in the upper end of the interior of the upper shell 4, wherein the bypass air inlet hole 14 is communicated with the left groove 12 and the upper groove 15; the bypass air outlet hole 16 is communicated with the right groove 13 and the upper groove 15; the shutter 3 abuts on an opening through which the air inlet hole 14 communicates with the upper groove 15.

As shown in fig. 2, a through hole is formed at the bottom of the lower housing 7, and the purge valve assembly 8 is installed at the through hole.

The outside cover of bleeder valve subassembly 8 is equipped with sealing washer 17, the outside of intake pipe 5 and outlet duct 6 is all overlapped and is equipped with three 19 of sealing washer, the outside cover of plug screw 1 is equipped with four 20 of sealing washer the outside cover of casing 7 is equipped with two 18 of sealing washer down, and wherein sealing washer one, two, three, the sealing washer of sealing washer are the rubber material.

The working process of the utility model is as follows:

when the automobile exhaust aftertreatment device is in actual use, compressed gas is discharged from an automobile exhaust aftertreatment system, the compressed air enters from an air inlet pipe of an upper shell, solid impurities, water and oil in the compressed air are filtered out through a filter element, the filtered compressed air is discharged from an air outlet pipe of the upper shell, the air flow in the compressed air filter flows in from an air inlet 10, flows to a lower shell 7 through a left groove 12 and is discharged from a right groove 13 through an air outlet 11 through a U-shaped cylindrical filter layer of the filter element 9. When the pressure difference between the air inlet and the air outlet is overlarge due to extreme conditions (such as low temperature, filter element blockage and the like), compressed air enters the upper shell through the air inlet 10, flows through the bypass air inlet 14 from the left groove 12 in the upper shell, jacks up the valve 3, enters the upper groove 15 and then is discharged from the air outlet 11 through the right groove 13. Therefore, the compressed air filter with the bypass valve solves the problem that the tail gas aftertreatment injection system fails to work due to insufficient air pressure of the tail gas aftertreatment system caused by overlarge pressure difference or blockage of the compressed air filter under the extreme low-temperature (below 0 ℃) condition or the condition that an end user cannot maintain the compressed air filter in time and the condition that the filter element is not replaced for a long time.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A compressed air filter with a bypass valve comprises an upper shell; it is characterized in that the preparation method is characterized in that,

the lower part of the upper shell is connected with the lower shell;

2. The compressed air filter with the bypass valve as recited in claim 1, wherein an upper groove is formed at an upper portion of the upper housing, a first lower groove and a second lower groove are formed at a lower portion of the upper housing, a left groove is formed at a left side, and a right groove is formed at a right side;

the upper end of the upper groove is provided with internal threads, and the plug screw is connected with the upper end of the upper groove in a threaded manner;

the left end of the left groove is provided with internal threads, and the air inlet pipe is in threaded connection with the left end of the left groove; the right end of the right groove is provided with internal threads, and the air outlet pipe is in threaded connection with the right end of the right groove;

the lower groove I is positioned on the inner side of the lower groove II, internal threads are respectively formed at the lower ends of the lower groove I and the lower groove II, the upper end of the lower shell is in threaded connection with the lower groove II, and the upper end of the filter element is in threaded connection with the lower groove I.

3. The compressed air filter with the bypass valve as recited in claim 2, wherein a bypass air inlet hole and a bypass air outlet hole are further formed at an inner upper end of the upper housing;

wherein the bypass air inlet is communicated with the left groove and the upper groove; the bypass air outlet is communicated with the right groove and the upper groove; the valve is abutted against the opening of the bypass air inlet hole.

4. The compressed air cleaner with the bypass valve as claimed in claim 2, wherein a through hole is opened at a bottom of the lower housing, and a purge valve assembly is installed at the through hole.

5. The compressed air filter with the bypass valve as recited in claim 2, wherein the filter element includes an end cap and a filter layer, the end cap is threadably engaged with the lower groove, the filter layer is in a U-shaped cylindrical configuration, and the filter layer is adhesively engaged with the end cap.

6. The compressed air filter with the bypass valve as claimed in claim 2, wherein the interfaces of the air inlet pipe and the air outlet pipe are both provided with quick interfaces which can be matched with quick connectors.

7. The bypass valve compressed air cleaner of claim 2, wherein the plug is a hex socket plug.

8. The compressed air filter with the bypass valve as recited in claim 4, wherein a first sealing ring is sleeved outside the bleed valve assembly, a third sealing ring is sleeved outside each of the intake pipe and the exhaust pipe, a fourth sealing ring is sleeved outside the plug screw, and a second sealing ring is sleeved outside the lower shell.