CN219111167U - Combined gas filter - Google Patents
Combined gas filter Download PDFInfo
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- CN219111167U CN219111167U CN202223174625.9U CN202223174625U CN219111167U CN 219111167 U CN219111167 U CN 219111167U CN 202223174625 U CN202223174625 U CN 202223174625U CN 219111167 U CN219111167 U CN 219111167U
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- filter element
- upper cover
- coarse filter
- shell
- precise
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Abstract
The utility model provides a combined gas filter which comprises an upper cover, a lower cover, a shell, a coarse filter element, a precise filter element, a one-way valve and a supporting ring. The upper cover, the lower cover and the shell form a closed cavity, a coarse filter element is fixed in the cavity, and a precise filter element is sleeved in the coarse filter element. The upper cover is provided with an air inlet and an air inlet channel, and the air inlet channel is communicated with a space formed by the outer wall of the coarse filter element and the inner wall of the shell; the upper cover is also provided with an air outlet and an air outlet channel, and the air outlet channel is communicated with the inner cavity of the precise filter element. The hydrogen containing impurities enters the filter shell through the upper cover air inlet and the air inlet channel, is filtered by the coarse filter element and the precise filter element, and is discharged from the upper cover air outlet channel and the air outlet. Particles and/or impurities filtered by the coarse filter element and the precise filter element sink to the bottom of the filter element, a drain outlet at the bottom of the lower cover is opened periodically, the one-way valve is opened under the action of high-pressure gas, and filtered particle dirt is discharged out of the filter along with the gas.
Description
Technical Field
The utility model relates to a gas filter, in particular to a combined gas filter for the front end of a hydrogen compressor.
Background
In general, the hydrogen gas/high-pressure hydrogen gas entering the hydrogen gas compressor contains large particulate matters such as silicon dioxide, aluminum oxide, iron oxide, magnesium oxide and the like, and in order to effectively protect compression components of the compressor, prevent abrasion of a gas seal, improve the service life of the compressor, the gas entering the hydrogen gas compressor needs to be filtered, and particles, dust, water and other impurities in the gas need to be filtered. The gas filter has the function of filtering impurities in the gas, wherein the impurities are more than the separation precision, a filter element is arranged in the gas filter, air flow enters the filter from the inlet of the filter and flows through the filter element, and purified air flow flows out from the outlet of the filter.
At present, most of gas filters applied to the front end of a hydrogen compressor are filters with single filtering precision, and when the impurity content in gas is high, a certain amount of impurities still exist in the filtered gas. In order to filter out impurities in the hydrogen as much as possible, a plurality of filters with different filtering precision are usually installed at the front end of the hydrogen compressor, and the defects are that: the installation space requirement is increased, and the manufacturing cost is obviously increased.
Disclosure of Invention
In view of the above, it is an object of the present utility model to provide a novel combination gas filter. At least two filter elements which are replaceable and have different filtering precision are arranged in the gas filter, so that the filtering of impurities with different particle diameters can be realized, and the filtering effect is obvious.
In order to achieve the above purpose, the present utility model adopts the following technical scheme: a combined gas filter comprises an upper cover, a lower cover, a shell, a coarse filter element, a precise filter element, a one-way valve and a support ring;
the upper cover, the lower cover and the shell form a closed cavity, and the bottom of the cavity is provided with the supporting ring for supporting the coarse filter element; the coarse filter element is arranged in the cavity, the bottom of the coarse filter element is fixed on the supporting ring, and the top of the coarse filter element is fixedly connected with the upper cover; the precise filter element is arranged in the coarse filter element, and the top of the precise filter element is fixedly connected with the upper cover;
the upper cover is provided with an air inlet and an air inlet channel, and the air inlet channel is communicated with a space formed by the outer wall of the coarse filter element and the inner wall of the shell; the upper cover is also provided with an air outlet and an air outlet channel, and the air outlet channel is communicated with the inner cavity of the precise filter element.
Preferably, a one-way valve for discharging the blow-down gas is installed at the bottom of the coarse filter element; the bottom of the lower cover is provided with a sewage outlet and a space for temporarily storing sewage; a drain needle valve is arranged at the drain outlet; the outlet of the one-way valve is communicated with the space at the bottom of the lower cover for temporarily storing dirt.
Preferably, the top of the coarse filter element is in threaded connection with the upper cover, and the bottom of the coarse filter element is fixed on the support ring; the top of the coarse filter element is provided with a groove, and an O-shaped sealing ring is embedded in the groove; the top of the precise filter element is in threaded connection with the upper cover, and an O-shaped sealing ring is arranged between the top of the precise filter element and the upper cover; the shell is in threaded connection with the upper cover, and two O-shaped sealing rings are arranged between the shell and the upper cover; the shell is in threaded connection with the lower cover, and two O-shaped sealing rings are arranged between the shell and the lower cover.
Preferably, the coarse filter element is made of multiple layers of glass fibers, and the filtering precision is 10um; the precise filter element is made of multiple layers of glass fibers, and the filtering precision is 1um.
The utility model has the advantages that: the filter elements with different filtering precision can be combined and replaced according to the requirements, so that the impurities with different particle diameters can be filtered; small volume and low cost.
Drawings
FIG. 1A is a schematic perspective view of a combined gas filter according to the present utility model;
FIG. 1B is a front view of a combined gas filter of the present utility model;
FIG. 1C is a side view of a modular gas filter of the present utility model;
FIG. 2 is an exploded view of a combination gas filter of the present utility model;
FIG. 3 is a schematic cross-sectional view of a combined gas filter according to the present utility model;
FIG. 4 is a schematic cross-sectional view of a check valve according to the present utility model;
FIG. 5 is a flow chart of the gas after filtration according to the present utility model;
FIG. 6 is a flow chart of the filtered blowdown gas of the present utility model.
Detailed Description
The structure and features of the present utility model will be described in detail below with reference to the accompanying drawings and examples. It should be noted that various modifications can be made to the embodiments disclosed herein, and thus, the embodiments disclosed in the specification should not be taken as limiting the utility model, but merely as exemplifications of embodiments, which are intended to make the features of the utility model apparent.
As shown in fig. 1 to 3, the combined type gas filter disclosed by the utility model comprises an upper cover 1, a lower cover 2, a shell 3, a coarse filter element 4, a precise filter element 5, a one-way valve 6 and a supporting ring 7.
The upper cover 1, the lower cover 2 and the shell 3 form a closed cavity, and a supporting ring 7 for supporting the coarse filter element 4 is arranged at the bottom of the cavity; the coarse filter element 4 is arranged in the cavity, the bottom of the coarse filter element is fixed on the supporting ring 7, and the top of the coarse filter element is fixedly connected with the upper cover 1; the precise filter element 5 is arranged in the coarse filter element 4, and the top of the precise filter element is fixedly connected with the upper cover 1.
The upper cover 1 is provided with an air inlet 11 and an air inlet channel 12, and the air inlet channel 12 is communicated with a space formed by the outer wall of the coarse filter element 4 and the inner wall of the shell 3. The upper cover 1 is also provided with an air outlet 13 and an air outlet channel 14, and the air outlet channel 14 is communicated with the inner cavity of the precise filter element 5.
The bottom of the lower cover 2 is provided with a drain 21 and a space 22 for temporarily storing dirt. A drain needle valve is installed at the drain outlet 21 to periodically discharge particles accumulated at the bottom of the filter.
A one-way valve 6 for discharging the blow-down gas is installed at the bottom of the coarse filter element 4. As shown in fig. 4, the check valve 6 is constituted by a valve body 61, a valve body 62, a spring 63, and a valve seat 64. The upper part of the valve body 61 is provided with threads which are connected with the threads at the bottom of the coarse filter element 4 and are 60-degree sealing threads. The valve element 62 is made of PTFE material and is mounted on the valve body 61. The valve seat 64 is provided with a groove for fixing the spring 63, the valve seat 64 is in threaded connection with the valve body 61, and the bottom of the valve seat 64 is provided with an inner hexagonal opening 641 which can be screwed by an L-wrench.
As shown in fig. 5, hydrogen and/or high-pressure hydrogen containing impurities enter the filter housing through the upper cover air inlet 11 and the air inlet channel 12, the check valve 6 is kept closed under the action of the spring 63, the gas is filtered through the coarse filter element 4 and then filtered through the precise filter element 5, and the filtered gas is discharged from the upper cover air outlet channel 14 and the air outlet 13. Particles and/or impurities filtered by the coarse filter element 4 and the fine filter element 5 sink to the bottom of the filter element.
After a period of use, the filter will accumulate some particulate impurities at the bottom of the cartridge that are blocked by the cartridge. Opening a drain needle valve installed at the drain port 21, the gas/high-pressure gas in the filter may flow toward the drain port 21 in the direction shown in fig. 6; the check valve 6 presses down the spring 63 under the action of high-pressure gas, the valve core 62 moves downwards, and the check valve is opened; particulate impurities which do not pass through the coarse filter element 4 and the precise filter element 5 are discharged from the sewage outlet 21 along with the gas/high-pressure gas through the one-way valve 5.
In the preferred embodiment of the present utility model, the upper cover 1, the lower cover 2 and the housing 3 are made of a hydrogen embrittlement resistant material, and have a wall thickness that can withstand high pressure hydrogen.
The top of the coarse filter element 4 is in threaded connection with the upper cover 1, and the bottom of the coarse filter element is fixed on the support ring 7. The top of the coarse filter element 4 is provided with a groove, and an O-shaped sealing ring 8 is embedded in the groove to realize the sealing with the upper cover 1. The coarse filter element 4 is made of multiple layers of glass fibers, and the filtering precision is 10um.
The top of the precise filter element 5 is in threaded connection with the upper cover 1, and the sealing with the upper cover 1 is realized through an O-shaped sealing ring 9. The precise filter element 5 is also made of multiple layers of glass fibers, and the filtering precision is 1um.
The shell 3 is connected with the upper cover 1 through threads, and is provided with an O-shaped sealing ring 10 and an O-shaped sealing ring 11 for sealing.
The shell 3 is connected with the lower cover 2 through threads, and is provided with an O-shaped sealing ring 12 and an O-shaped sealing ring 13 for sealing.
In the preferred embodiment of the utility model, 2 filter elements with different filtering precision are sleeved in the shell 3, and of course, a filter element with different filtering precision can be sleeved in the innermost precision filter element 5 according to the requirement.
According to the utility model, through replacing and combining filter elements with different filtering precision, the multi-stage filtering function can be realized only by a plurality of filters connected in series, the occupied space is reduced, and the cost can be greatly reduced.
Finally, it should be noted that: the embodiments described above are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (4)
1. A combination gas filter, characterized in that: the device comprises an upper cover, a lower cover, a shell, a coarse filter element, a precise filter element, a one-way valve and a supporting ring;
the upper cover, the lower cover and the shell form a closed cavity, and the bottom of the cavity is provided with the supporting ring for supporting the coarse filter element; the coarse filter element is arranged in the cavity, the bottom of the coarse filter element is fixed on the supporting ring, and the top of the coarse filter element is fixedly connected with the upper cover; the precise filter element is arranged in the coarse filter element, and the top of the precise filter element is fixedly connected with the upper cover;
the upper cover is provided with an air inlet and an air inlet channel, and the air inlet channel is communicated with a space formed by the outer wall of the coarse filter element and the inner wall of the shell; the upper cover is also provided with an air outlet and an air outlet channel, and the air outlet channel is communicated with the inner cavity of the precise filter element.
2. A combined gas filter according to claim 1, wherein: a one-way valve for discharging sewage gas is arranged at the bottom of the coarse filter element;
the bottom of the lower cover is provided with a sewage outlet and a space for temporarily storing sewage; a drain needle valve is arranged at the drain outlet;
the outlet of the one-way valve is communicated with the space at the bottom of the lower cover for temporarily storing dirt.
3. A combined gas filter according to claim 1, wherein: the top of the coarse filter element is in threaded connection with the upper cover, and the bottom of the coarse filter element is fixed on the support ring; the top of the coarse filter element is provided with a groove, and an O-shaped sealing ring is embedded in the groove;
the top of the precise filter element is in threaded connection with the upper cover, and an O-shaped sealing ring is arranged between the top of the precise filter element and the upper cover;
the shell is in threaded connection with the upper cover, and two O-shaped sealing rings are arranged between the shell and the upper cover;
the shell is in threaded connection with the lower cover, and two O-shaped sealing rings are arranged between the shell and the lower cover.
4. A combined gas filter according to any one of claims 1-3, characterized in that: the coarse filter core is made of multiple layers of glass fibers, and the filtering precision is 10um;
the precise filter element is made of multiple layers of glass fibers, and the filtering precision is 1um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223174625.9U CN219111167U (en) | 2022-11-29 | 2022-11-29 | Combined gas filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223174625.9U CN219111167U (en) | 2022-11-29 | 2022-11-29 | Combined gas filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219111167U true CN219111167U (en) | 2023-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223174625.9U Active CN219111167U (en) | 2022-11-29 | 2022-11-29 | Combined gas filter |
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| Country | Link |
|---|---|
| CN (1) | CN219111167U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116983783A (en) * | 2023-09-26 | 2023-11-03 | 新乡市华航航空液压设备有限公司 | High-efficient high-pressure air filter |
-
2022
- 2022-11-29 CN CN202223174625.9U patent/CN219111167U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116983783A (en) * | 2023-09-26 | 2023-11-03 | 新乡市华航航空液压设备有限公司 | High-efficient high-pressure air filter |
| CN116983783B (en) * | 2023-09-26 | 2024-05-17 | 新乡市华航航空液压设备有限公司 | High-efficient high-pressure air filter |
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