CN204254024U - Natural gas engine exhaust gas control valve filtrating equipment - Google Patents

Abstract

The utility model discloses a kind of natural gas engine exhaust gas control valve filtrating equipment, belong to natural gas engine technical field, comprise filter housing, described filter housing has a gas-entered passageway, filter core is provided with in described filter housing, the upper end of described filter core is sealedly connected with cap on filter core, on described filter core and filter core, cap is all arranged in described gas-entered passageway, the lower end constraint of described filter housing is provided with filter base, described filter housing is stretched out in the lower end of described filter base, the lower end of described filter base is fixedly installed in the suction port of described exhaust gas control valve, described cartridge seal is connected to the upper end of described filter base, described filter base has an outlet passageway, described outlet passageway is communicated with the inner chamber of described filter core.The utility model solves the fault of dirty stifled, the PWM valve of exhaust gas control valve air inlet screen early mill, thus ensures that suction pressure is adjustable, the normal outputting power of natural gas engine.

Description

Natural gas engine exhaust gas control valve filter device

technical field

The utility model belongs to the technical field of natural gas engines, in particular to a filtering device for exhaust gas control valves of natural gas engines.

Background technique

The main component of natural gas is methane. Its outstanding advantages are that the combustion is very complete, the exhaust gas is relatively clean, and it can meet the increasingly stringent emission regulations. It is quite beneficial to purify the environment. %, there is basically no smoke and dust after combustion, and other toxic emissions are also the least. The biggest advantage of natural gas engines is low pollution, no dilution of lubricating oil, prolonging engine life, and reducing vehicle noise.

When the natural gas engine is working, if the inhaled air contains dust and other impurities, it will aggravate the wear of the parts, so an air filter must be installed. After the air filter is used for a period of time, a large amount of impurities will accumulate on the surface of the filter element, so the impurities in the air filter need to be cleaned regularly. However, in actual use, users often fail to maintain the air filter in time, which will eventually cause impurities such as dust in the air to enter the exhaust system.

In the electronic control system of natural gas engine, the exhaust gas control valve is responsible for adjusting the boost pressure of the supercharger, which is very important and indispensable. However, during the use of the exhaust gas control valve, the intake filter is dirty and blocked, and the PWM (PulseWidth Modulation, pulse width modulation) solenoid valve is prematurely worn out, causing the intake pressure to be out of balance and affecting the normal power output of the engine.

Utility model content

The technical problem to be solved by the utility model is: to provide a natural gas engine exhaust gas control valve filtering device to solve the problems of dirty air intake filter screen and early wear of PWM solenoid valve during the use of the exhaust gas control valve, which will cause air intake Pressure imbalance, a technical problem that affects the normal power output of the engine.

In order to solve the above-mentioned technical problems, the technical proposal of the present utility model is: a natural gas engine exhaust gas control valve filter device, including a filter housing, the filter housing has an air intake passage, and a filter element is arranged in the filter housing, and the The upper end of the filter element is sealed and connected with a filter element upper cap, and both the filter element and the filter element upper cap are arranged in the air intake passage, and the lower end of the filter housing is restrained by a filter base, and the lower end of the filter base protrudes The filter housing, the lower end of the filter base is fixedly installed on the air inlet of the waste gas control valve, the filter element is sealed and connected to the upper end of the filter base, the filter base has an air outlet channel, The air outlet channel communicates with the inner cavity of the filter element.

As an improvement, the filter element is a steel powder filter element made of steel powder die-casting.

As an improvement, the upper surface of the filter base is provided with a guide boss and a first annular groove surrounding the guide boss, the filter element is sleeved on the guide boss and the lower part of the filter element The surface abuts against the first annular groove.

As a further improvement, an O-ring is provided between the filter housing and the filter base.

As a further improvement, a second annular groove is provided on the side wall of the upper end of the filter base, and the O-ring is located in the second annular groove.

After adopting the above-mentioned technical scheme, the beneficial effect of the utility model is: since the exhaust gas control valve filter device of the natural gas engine is provided with a filter base, a filter element, a filter element upper cap and a filter housing at the air inlet of the exhaust gas control valve, the filter The air intake channel of the housing is connected with the pressurized intake pipe with a formed pipeline. When in use, the exhaust gas enters the filter element through the air intake channel, and then enters the exhaust gas control valve through the air outlet channel. During this process, dust, impurities, etc. in the exhaust gas Impurities are filtered, ensuring that the air entering the exhaust control valve is clean. The filter device for the exhaust gas control valve of the natural gas engine provided by the utility model solves the problems of dirty blockage of the intake filter screen of the exhaust gas control valve and premature wear of the PWM valve, thereby ensuring that the intake pressure can be adjusted and the natural gas engine can output power normally.

Since the filter element is a steel powder filter element made of steel powder die-casting, it not only has corrosion resistance, but also has higher filtering accuracy, further ensuring that the air entering the exhaust gas control valve is clean.

Since the upper surface of the filter base is provided with a guide boss, the guide boss guides and fixes the installation of the filter element, which is convenient for assembly.

Since an O-ring is provided between the filter housing and the filter base, the O-ring ensures the tightness between the filter housing and the filter base to prevent leakage of exhaust gas.

Since the side wall at the upper end of the filter base is provided with a second annular groove, the second annular groove makes the fixing of the O-ring seal easy.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a schematic structural view of the filter base in Fig. 1;

Fig. 3 is a schematic structural view of the filter housing in Fig. 1;

In the figure: 1. Filter shell, 11. Air intake channel, 12. Limiting groove, 2. Filter element, 3. Filter element upper cap, 4. Sealant, 5. Filter base, 51. Guide boss, 52, The first annular groove, 53, the air outlet channel, 54, the second annular groove, 6, the sealant, 7, the O-ring;

The hollow arrows in Figure 1 represent the direction of exhaust gas.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

As shown in Figures 1 to 3, a natural gas engine exhaust gas control valve filter device includes a filter housing 1, the filter housing 1 has an air intake channel 11, and the filter housing 1 is provided with a filter element 2, the filter element 2 is preferably The steel powder filter element made of steel powder die-casting not only has corrosion resistance, but also has higher filtration accuracy to ensure that the air entering the exhaust gas control valve is clean. The upper end of the filter element 2 is sealed and connected with the filter element upper cap 3. Specifically, The sealant 4 can be used to seal between the filter element 2 and the filter element upper cap 3 , and both the filter element 2 and the filter element upper cap 3 are arranged in the air intake passage 11 .

The lower end of the filter housing 1 is restrained by a filter base 5. Specifically, the lower end of the filter housing 1 is provided with a limiting groove 12, and the upper end of the filter base 5 is located in the limiting groove 12. The filter housing 1 and the filter base 5 During assembly, crimping can be used.

The lower end of the filter base 5 stretches out from the filter housing 1, and the lower end of the filter base 5 is fixedly installed on the air inlet of the waste gas control valve (not shown in the figure), and the air inlet of the filter base 5 and the waste gas control valve can be Through screw connection; the filter element 2 is sealed and connected to the upper end of the filter base 5, and the sealant 6 is used to seal the filter base 5 and the filter element 2. Specifically, the upper surface of the filter base 5 is provided with a guide boss 51 and a surrounding guide The first annular groove 52 provided on the boss 51 sets the sealant 6 in the first annular groove 52, the filter element 2 is set on the guide boss 51 and the lower surface of the filter element 2 is against the first annular groove 52, The guide boss 51 guides and fixes the installation of the filter element 2, which is convenient for assembly.

The filter base 5 has an air outlet channel 53 , and the air outlet channel 53 communicates with the inner cavity of the filter element 2 .

In order to prevent leakage of exhaust gas, an O-ring 7 is provided between the filter housing 1 and the filter base 5 , and the O-ring 7 ensures the tightness between the filter housing 1 and the filter base 5 .

The sidewall of the upper end of the filter base 5 is provided with a second annular groove 54, the O-ring 7 is located in the second annular groove 54, the second annular groove 54 makes the O-ring 7 easy to fix.

By connecting the intake passage 11 of the filter housing 1 with the pressurized intake pipe with a molding pipeline (not shown), in use, exhaust gas enters the filter element 2 through the intake passage 11, and then enters through the outlet passage 53 Exhaust gas control valve, during this process, impurities such as dust and dirt in the exhaust gas will be filtered, so as to ensure that the air entering the exhaust gas control valve is clean.

The exhaust gas control valve filter device of the natural gas engine provided by the utility model solves the faults of the dirty blockage of the intake filter screen of the exhaust gas control valve and the premature wear of the PWM valve, thereby ensuring that the intake pressure is adjustable and the natural gas engine outputs power normally.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (5)

1. Natural gas engine waste gas control valve filtering device, it is characterized in that, comprises filter shell, and described filter shell has an air intake passage, and filter core is arranged in the described filter shell, and the upper end of described filter core is sealed and connected with the upper end of filter core. cap, the filter element and the upper cap of the filter element are both arranged in the air intake channel, the lower end of the filter housing is restrained by a filter base, the lower end of the filter base protrudes from the filter housing, the The lower end of the filter base is fixedly installed on the air inlet of the waste gas control valve, the filter element is sealed and connected to the upper end of the filter base, the filter base has an air outlet channel, and the air outlet channel communicates with the filter element of the inner cavity. 2. The filter device for exhaust gas control valve of a natural gas engine according to claim 1, wherein the filter element is a steel powder filter element made of steel powder die-casting. 3. The natural gas engine exhaust gas control valve filter device according to claim 1 or 2, characterized in that, the upper surface of the filter base is provided with a guide boss and a first annular groove arranged around the guide boss , the filter element is sleeved on the guide boss and the lower surface of the filter element abuts against the first annular groove. 4. The filter device for exhaust gas control valve of natural gas engine according to claim 3, characterized in that an O-ring is arranged between the filter housing and the filter base. 5. The natural gas engine exhaust gas control valve filtering device according to claim 4, wherein a second annular groove is arranged on the side wall of the upper end of the filter base, and the O-ring is located at the second in the ring groove.