CN-224220977-U - Multifunctional high-pressure air filter

CN224220977UCN 224220977 UCN224220977 UCN 224220977UCN-224220977-U

Abstract

The utility model discloses a multifunctional high-pressure air filter, relates to the technical field of air purification equipment, and is particularly suitable for gas filtration treatment under a high-pressure environment of 20MPa and above. The filter comprises an upper shell, a lower shell, a filter element, an anti-pinch plate, a liquid collecting cavity and a liquid discharging assembly, wherein the filter element adopts a three-layer stainless steel composite structure and has the characteristics of high strength, high filtering precision and repeated cleaning and use, a plurality of directional inclined holes are formed in the anti-pinch plate, oil-water particle rollback can be effectively blocked, the separation efficiency is improved, the liquid discharging structure adopts a rotary joint capable of rotating by 360 degrees and an elastic clamping ring limiting mode, the filter element is suitable for different installation positions, and meanwhile, the filter element is provided with a high-pressure differential meter, so that the running state of the filter element can be monitored on line. The utility model has compact structure, reliable sealing, high filtering efficiency, flexible installation and good industrial application prospect.

Inventors

LIANG XINWU
XU LI
YANG TIANYI
CHENG KAI
WU DEZHEN
LI CHAORAN
LI PING
CHANG CHENG
SHEN HUI
WU BAOWEI

Assignees

新乡市万和过滤技术股份公司

Dates

Publication Date: 20260512
Application Date: 20250616

Claims (6)

1. A multifunctional high-pressure air filter comprises an upper shell (5), a lower shell (6), a liquid discharge valve (7) and a filter element (13), and is characterized in that an anti-pinch plate (14) is arranged in the lower shell (6), the lower end of the filter element (13) is in threaded connection with the anti-pinch plate (14), the upper end of the filter element (13) is in contact with the upper shell (5), an anti-pinch inclined hole (25) is arranged in the circumferential direction of the anti-pinch plate (14), a liquid collecting cavity (27) is arranged below the anti-pinch plate (14), the upper shell (5) is in threaded connection with the lower shell (6), an outlet joint (10) is arranged on the left side of the upper shell (5), an inlet joint (4) is arranged on the upper shell (5), the liquid discharge valve (7) is connected with a liquid discharge port (28) of the lower shell (6) through a rotary joint (9), a clamping ring mounting hole (26) is arranged between the rotary joint (9) and the liquid discharge port (28), an elastic clamping ring (16) is arranged in the mounting hole (26), an elastic clamping ring (16) penetrates through the mounting hole (16) and is arranged at the elastic clamping ring (16) at the position of the U-shaped clamping ring (29), the outlet of the liquid discharge valve (7) is connected with a liquid discharge port joint (8).
2. The multifunctional high-pressure air filter of claim 1, wherein the upper shell (5) is sleeved on the lower shell (6) and connected in a threaded mode, a first sealing ring (12) is arranged between the upper shell (5) and the lower shell (6), a mounting frame (11) is arranged on one side of the upper end of the upper shell (5), a high-pressure differential gauge (3) is arranged on the side face of the mounting frame (11), the high-pressure differential gauge (3) is connected with the high-pressure side of the filter through a high-pressure end connection pipe (2), and the high-pressure differential gauge (3) is connected with the low-pressure side of the filter through a low-pressure end connection pipe (1).
3. The multifunctional high-pressure air filter of claim 1, wherein a first sealing surface (30) and a first fixing surface (31) are arranged in the liquid outlet (28) of the lower shell (6), a second sealing surface (33) and a second fixing surface (32) are arranged on the rotary joint (9), a second sealing ring mounting groove (34) is arranged on the second sealing surface (33), a second sealing ring (15) is arranged in the second sealing ring mounting groove (34), an elastic clamping ring mounting groove (29) is arranged on the second fixing surface (32), and the second sealing surface (33) and the second fixing surface (32) are respectively matched with the first sealing surface (30) and the first fixing surface (31) of the lower shell (6).
4. The multifunctional high-pressure air filter according to claim 1, wherein lead sealing holes (35) are formed at two ends of the U-shaped opening of the elastic clamping ring (16), and after the elastic clamping ring (16) is installed in place, the elastic clamping ring (16) is subjected to anti-loosening lead sealing through stainless steel wires.
5. The multifunctional high-pressure air filter of claim 1, wherein the filter element (13) consists of a third sealing ring (17), an upper end cover (18), a first filtering layer (19), a second filtering layer (20), a third filtering layer (21) and a lower end cover (22), and are combined into a whole in a welding mode, the first filtering layer (19) is formed by rolling and welding a stainless steel sintered screen plate into a cylindrical package, the second filtering layer (20) is made of a stainless steel powder sintered tube, the third filtering layer (21) is a strong and sparse layer formed by Teflon spraying treatment on the surface of the second filtering layer (20), the thickness of the sprayed strong and sparse layer is 25-60 um, and the third sealing ring (17) is arranged between the upper end cover (18) and the upper shell (5).
6. A multifunctional high-pressure air filter according to claim 1, characterized in that the anti-entrainment band plate (14) is mounted on top of the liquid collecting cavity (27), and the anti-entrainment inclined hole (25) has a fixed inclination angle.

Description

Multifunctional high-pressure air filter Technical Field The utility model relates to the technical field of air filtration, in particular to a multifunctional high-pressure air filter. Background The compressed air filter is widely applied to compressed air power systems of industrial enterprises and scientific research units, belongs to mature standard products, and is mainly applicable to medium-low pressure scenes, and the working pressure is usually not more than 1.6MPa. Such filters typically include an upper housing, a lower housing, a filter cartridge, a gasket, and a drain valve. The drain valve is usually connected with the lower shell through right-angle joint in a threaded manner, or a blocking type and automatic drain mode is adopted, and the filter core is divided into a particulate filter core and an oil filter core according to different functions. The particulate filter element is used for removing solid particulate impurities in compressed air, and the oil filter element is mainly used for separating liquid oil and water by a coalescence principle. The prior compressed air filter has certain use effect, but has a plurality of technical limitations. On one hand, the existing products are generally difficult to meet the structural strength and sealing reliability under the working condition of high pressure (such as 20MPa and above), and cannot stably run in a high-pressure system. On the other hand, most of filter elements are made of disposable materials such as glass fibers, and the filter elements cannot be reused, so that the maintenance cost is high. In addition, the direction of traditional flowing back structure is fixed, and the space restriction is great by the scene during installation, and the operation is inconvenient. Most of the existing filters are not provided with an online pressure difference display device, so that the blocking degree of the filter element is difficult to judge in time, and an effective maintenance early warning mechanism is lacked. Meanwhile, under the condition of high flow velocity, oil water accumulated on the surface of the filter element is easy to be carried by air flow to form reflux, so that the separation effect is reduced, and the quality of downstream gas is affected. Therefore, a high-performance compressed air filter which is suitable for high-pressure working conditions, compact in structure, reusable in filter element, flexible in installation mode and capable of displaying online pressure difference is needed, so that the defects in the prior art are overcome, and the safety, reliability and economy of the system are improved. Disclosure of utility model The utility model aims to overcome the existing defects, and provides the multifunctional high-pressure air filter which optimizes the air flow and oil-water particle separation path, avoids entrainment reflux, improves the air purification effect, supports 360-degree arbitrary direction installation, adapts to the field arrangement requirement of complex working conditions, adopts a full stainless steel filter element structure, can be cleaned and reused, is suitable for high-pressure working conditions with working pressure of 20MPa and above, and can effectively solve the problems in the background art. In order to achieve the above purpose, the present utility model provides the following technical solutions: a multifunctional high-pressure air filter comprises an upper shell, a lower shell, a liquid discharge valve and a filter element, wherein an anti-entrainment plate is arranged in the lower shell, the lower end of the filter element is in threaded connection with the anti-entrainment plate, the upper end of the filter element is propped against the upper shell, an anti-entrainment inclined hole is arranged in the circumferential direction of the anti-entrainment plate, a liquid collecting cavity is arranged below the anti-entrainment plate and is used for collecting solid particle impurities, liquid oil and water, the upper shell is in threaded connection with the lower shell, an outlet connector is arranged on the left side of the upper shell, an inlet connector is arranged on the upper shell, air enters the lower shell through the inlet connector, the air flows into the lower shell from the outside of the filter element, and filtered clean air flows upwards and flows out through the outlet connector of the lower shell, in the process, solid particle impurities, liquid oil and water are blocked on the outer surface of the filter element, the liquid oil and water naturally subside downwards and gather due to high density and fluidity and are collected into a liquid collecting cavity of the lower shell, the liquid is regularly discharged through a liquid discharge valve, the liquid discharge valve is connected with a liquid discharge port of the lower shell through a rotary joint, a collar mounting hole is arranged at the liquid discharge port, a second sealing ring is arranged be