CN216092761U

CN216092761U - Gas filter capable of displaying blocking degree of filter element

Info

Publication number: CN216092761U
Application number: CN202122683742.7U
Authority: CN
Inventors: 常保平; 周粉兰
Original assignee: Hefei Jiuhuan Water Supply And Drainage Gas Equipment Co ltd
Current assignee: Hefei Jiuhuan Water Supply And Drainage Gas Equipment Co ltd
Priority date: 2021-11-04
Filing date: 2021-11-04
Publication date: 2022-03-22
Anticipated expiration: 2031-11-04

Abstract

The utility model relates to a gas filter capable of displaying the blocking degree of a filter element, which comprises a hollow shell, wherein an air inlet pipeline, the filter element and an air outlet pipeline are sequentially arranged in the shell according to the flowing direction of gas, the filter element is communicated with the air outlet pipeline through a sealing assembly, a valve plate opening mechanism is arranged at the outlet of the filter element communicated with the air outlet pipeline, and the valve plate opening mechanism is pushed to be opened by the gas passing through the filter element, so that the filter element is communicated with the air outlet pipeline. According to the utility model, the pressure difference meter is arranged to observe the air pressure at the front end and the rear end of the filter element so as to judge the blocking degree of the filter element, the valve plate is arranged at the outlet end of the filter element, the reading of the pressure difference meter is normal only when the valve plate is normally opened, when internal leakage occurs, the pressures at the two ends of the pressure difference meter are the same, the condition that the valve plate is not opened can be visually judged from the outside, the condition that fuel gas does not pass through the filter element is further judged, the follow-up maintenance is convenient, and unfiltered fuel gas is prevented from passing through the filter.

Description

Gas filter capable of displaying blocking degree of filter element

Technical Field

The utility model belongs to the field of gas filters, and particularly relates to a gas filter capable of displaying the blocking degree of a filter element.

Background

The gas filter is widely used in the gas fields of metallurgy, chemical industry, petroleum, paper making, medicine, food, mining, electric power, city, family and the like. The gas filter is an indispensable device on a medium conveying pipeline, is usually arranged at the inlet end of a pressure reducing valve, a pressure relief valve, a positioning valve or other equipment, and is used for eliminating impurities in the medium so as to protect the normal use of the valve and the equipment and reduce the maintenance cost of the equipment.

The existing gas filter is additionally provided with a pressure difference meter between the air inlet end and the air outlet end of the shell, the blocking degree of the filter element is judged through the air pressure difference of the front end and the rear end of the filter element, the filter element is likely to leak air at the joint between the filter element and the base due to inclination of the filter element, improper fixation or damage of a sealing strip in the installation process, and the pressure difference meter can not accurately judge the pressure difference between the front side and the rear side of the filter element at the moment.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems and provide a gas filter which has a simple structure and reasonable design and can display the blockage degree of a filter element.

The utility model realizes the purpose through the following technical scheme:

the utility model provides a can show gas filter of filter core jam degree, includes hollow casing, be equipped with air inlet pipeline, filter core and air outlet pipeline in proper order according to the gas flow direction in the casing, the filter core passes through seal assembly and air outlet pipeline intercommunication, the exit of filter core and air outlet pipeline intercommunication is equipped with valve plate opening mechanism, valve plate opening mechanism is opened by the gas promotion through the filter core, makes filter core and air outlet pipeline intercommunication, gas filter still includes the differential pressure table, works as when valve plate opening mechanism opens, air inlet pipeline and air outlet pipeline are connected respectively to the both ends of differential pressure table, works as when valve plate opening mechanism closes, the both ends of differential pressure table all communicate with air outlet pipeline.

As a further optimization scheme of the utility model, the valve plate opening mechanism comprises a valve plate, the valve plate is positioned at an outlet of the filter element, the valve plate is provided with a spring and a valve rod, the spring and the valve rod are both arranged along a gas flowing direction, the end part of the spring is fixed on the bottom wall inside the gas outlet pipeline, the end part of the valve rod is provided with a cylindrical block, the surface of the cylindrical block is provided with a wall in contact with the cylindrical block, the cylindrical block slides along the surface of the wall, the cylindrical block is provided with a through hole, the wall where one end of the through hole is positioned is provided with a first gas inlet connecting pipe communicated with the gas inlet pipeline and a second gas inlet connecting pipe communicated with the gas outlet pipeline, the wall where the other end of the through hole is positioned is provided with a first conduit communicated with a pressure difference meter, and the pressure difference meter is communicated with the gas outlet pipeline through a second conduit.

As a further optimized scheme of the utility model, the through hole is in a triangular cavity shape, the openings at one side of the first air inlet connecting pipe and the second air inlet connecting pipe are small, and the opening at one side of the first conduit is large.

As a further optimization scheme of the utility model, the wall around the cylindrical block and the inner wall of the air outlet pipeline are integrated to form a sealing chute for accommodating the cylindrical block, the wall of the air outlet pipeline is provided with a guide cylinder, and the valve rod extends into the sealing chute through the guide cylinder.

As a further optimization scheme of the utility model, the sealing assembly comprises an annular sheet arranged at the joint of the filter element and the air outlet pipeline, an annular clamping strip is arranged on the surface of the annular sheet, which is in contact with the air outlet pipeline, and an annular clamping groove matched with the annular clamping strip is arranged on the air outlet pipeline.

As a further optimization scheme of the utility model, the surface of the annular sheet is provided with a groove for accommodating the valve plate opening mechanism.

As a further optimized scheme of the utility model, the top end of the shell is provided with a top cover, and the bottom end of the shell is provided with an exhaust valve.

The utility model has the beneficial effects that:

1) according to the utility model, the pressure difference meter is arranged to observe the air pressure at the front end and the rear end of the filter element so as to judge the blocking degree of the filter element, the valve plate is arranged at the outlet end of the filter element, the reading of the pressure difference meter is normal only when the valve plate is normally opened, when internal leakage occurs, the pressures at the two ends of the pressure difference meter are the same, the valve plate can be intuitively judged from the outside to be not opened, the fuel gas is further judged not to pass through the filter element, the follow-up maintenance is convenient, and the unfiltered fuel gas is prevented from passing through the filter;

2) the utility model has simple structure, high stability, reasonable design and convenient realization.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

FIG. 2 is an enlarged view of the portion A of FIG. 1 according to the present invention.

FIG. 3 is an enlarged view of the portion B of FIG. 1 according to the present invention.

FIG. 4 is a cross-sectional view taken along line C-C of FIG. 1 in accordance with the present invention.

FIG. 5 is a side view of a cylinder block structure of the present invention.

In the figure: 1. a housing; 2. an air intake line; 3. an air outlet pipeline; 4. a filter element; 5. an annular sheet; 6. A groove; 7. an annular clamping strip; 8. an annular neck; 9. a guide cylinder; 10. a valve stem; 11. a valve plate; 12. A spring; 13. a cylindrical block; 14. a first air inlet connecting pipe; 15. a second air inlet connecting pipe; 16. a through hole; 17. a first conduit; 18. a differential pressure gauge; 19. a second conduit.

Detailed Description

The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention; in the description of the present invention, the meaning of "plurality" or "a plurality" is two or more unless otherwise specified.

Example 1

As shown in fig. 1-5, a gas filter capable of displaying the blocking degree of a filter element comprises a hollow shell 1, a gas inlet pipeline 2, a filter element 4 and a gas outlet pipeline 3 are sequentially arranged in the shell 1 according to the gas flow direction, the filter element 4 is communicated with the gas outlet pipeline 3 through a sealing component, a valve plate opening mechanism is arranged at the outlet of the filter element 4 communicated with the gas outlet pipeline 3, the valve plate opening mechanism is pushed to be opened by the gas passing through the filter element 4, so that the filter element 4 is communicated with the gas outlet pipeline 3, the gas filter further comprises a pressure difference meter 18, when the valve plate opening mechanism is opened, two ends of the pressure difference meter 18 are respectively connected with the gas inlet pipeline 2 and the gas outlet pipeline 3, when the valve plate opening mechanism is closed, two ends of the pressure difference meter 18 are both communicated with the gas outlet pipeline 3, the pressure difference meter 18 is used for displaying the blocking degree of the filter element, and simultaneously monitoring whether the valve plate 11 is opened, and judging the pressure difference of the front end and the back end of the filter element 4 through the reading of the pressure difference meter 18, and then judge its degree of blocking, if inside takes place to leak gas, the gas does not directly flow from the front end to the rear end through filter core 4, then valve plate 11 does not open, and the reading that shows in differential pressure gauge 18 is unusual, makes things convenient for direct observation from the outside.

The valve plate opening mechanism comprises a valve plate 11, the valve plate 11 is positioned at an outlet of the filter element 4, a spring 12 and a valve rod 10 are arranged on the valve plate 11, the spring 12 and the valve rod 10 are both configured along the gas flowing direction, the end part of the spring 12 is fixed on the bottom wall inside the gas outlet pipeline 3, the end part of the valve rod 10 is provided with a cylindrical block 13, the surface of the cylindrical block 13 is provided with a wall contacted with the cylindrical block 13, the cylindrical block 13 slides along the surface of the wall, the cylindrical block 13 is provided with a through hole 16, the wall at one end of the through hole 16 is provided with a first gas inlet connecting pipe 14 communicated with the gas inlet pipeline 2 and a second gas inlet connecting pipe 15 communicated with the gas outlet pipeline 3, the wall at the other end of the through hole 16 is provided with a first guide pipe 17 communicated with a pressure difference meter 18, the pressure difference meter 18 is communicated with the gas outlet pipeline 3 through a second guide pipe 19, the valve plate 11 is arranged at the outlet of the filter element 4, and the valve plate 11 can be pushed to be opened only by the gas flow passing through the filter element 4, meanwhile, when gas does not circulate, the valve plate 11 is attached in the groove 6 through the elastic force of the spring 12, the cylindrical block 13 and the through hole 16 are used for switching the connection position of the first guide pipe 17 of the pressure difference meter 18, only when the valve plate 11 is opened, the through hole 16 connects the first guide pipe 17 with the first air inlet connecting pipe 14, the reading of the pressure difference meter is normal, otherwise, when the valve plate 11 is not opened, the first guide pipe 17 is connected with the second air inlet connecting pipe 15 through the through hole 16, and the reading is abnormal.

The through hole 16 is a triangular cavity, the openings at one sides of the first air inlet connecting pipe 14 and the second air inlet connecting pipe 15 are small, the opening at one side of the first guide pipe 17 is large, and the through hole 16 is set to be triangular cavity-shaped and can be always communicated with the first guide pipe 17, and only one of the first air inlet connecting pipe 14 and the second air inlet connecting pipe 15 can be communicated with the through hole.

The wall around the cylindrical block 13 is integrated with the inner wall of the air outlet pipeline 3 to form a sealing sliding groove for accommodating the cylindrical block 13, the wall of the air outlet pipeline 3 is provided with a guide cylinder 9, and the valve rod 10 extends into the sealing sliding groove through the guide cylinder 9, so that the valve plate 11 can drive the cylindrical block 13 to slide when being opened.

Seal assembly is including setting up the annular disc 5 in

filter core

4 and 3 junctions of giving vent to anger pipeline, and the surface that

annular disc

5 and 3 contacts of giving vent to anger pipeline is equipped with annular card strip 7, is equipped with the ring groove 8 that matches with annular card strip 7 on the pipeline of giving vent to anger pipeline 3, and seal assembly plays sealed effect, plays the effect to filter core 4 location installation simultaneously.

The surface of the annular sheet 5 is provided with a groove 6 for accommodating the valve plate opening mechanism, and the groove 6 is used for ensuring that the valve plate 11 can be pushed away after the fuel gas passes through the filter element 4.

The top of casing 1 is equipped with the top cap, and the bottom of casing 1 is equipped with the blowoff valve, and the top cap is used for compressing tightly fixed filter core 4, and the blowoff valve is used for overhauing the ash.

The implementation mode is specifically as follows: during normal operation, fuel gas enters the shell 1 through the air inlet pipeline 2, enters the interior through the outer surface of the filter element 4, then backs up the valve plate 11 to form a passage, the valve rod 10 moves downwards after the valve plate 11 is backed up to drive the cylindrical block 13 to move downwards, the first air inlet connecting pipe 14 is aligned with the through hole 16 and is communicated with the first guide pipe 17 through the through hole 16, two ends of the pressure difference meter 18 are respectively communicated with the front end and the rear end of the filter element 4, the reading of the pressure difference meter 18 is the pressure difference between the two ends of the filter element 4, the larger the numerical value is, the higher the blocking degree of the filter element 4 is, if air leaks from the contact part of the annular clamping strip 7 and the annular clamping groove 8, the valve plate 11 is not opened, the valve plate 11 is still positioned in the groove 6 under the action of the spring 12, the through hole 16 is aligned with the second air inlet connecting pipe 15, the two ends of the pressure difference meter 18 are both connected to the air outlet pipeline 3, the air pressures at the two ends are the same, the reading of the pressure difference meter 23 is 0, the valve plate 11 is judged to be not opened, if the gas is in use, the valve plate 11 is not opened, which indicates that the gas leaks from the inside and does not pass through the filter element 4.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.

Claims

1. A gas filter capable of displaying the blocking degree of a filter element comprises a hollow shell (1), an air inlet pipeline (2), a filter element (4) and an air outlet pipeline (3) are sequentially arranged in the shell (1) according to the flowing direction of fuel gas, the filter element (4) is communicated with the air outlet pipeline (3) through a sealing component, it is characterized in that a valve plate opening mechanism is arranged at the outlet of the filter element (4) communicated with the air outlet pipeline (3), the valve plate opening mechanism is pushed to be opened by gas passing through the filter element (4), so that the filter element (4) is communicated with the gas outlet pipeline (3), the gas filter also comprises a differential pressure gauge (18), when the valve plate opening mechanism is opened, two ends of the differential pressure gauge (18) are respectively connected with the air inlet pipeline (2) and the air outlet pipeline (3), when the valve plate opening mechanism is closed, two ends of the differential pressure gauge (18) are communicated with the air outlet pipeline (3).

2. The gas filter capable of displaying the blocking degree of the filter element according to claim 1, wherein the valve plate opening mechanism comprises a valve plate (11), the valve plate (11) is located at the outlet of the filter element (4), a spring (12) and a valve rod (10) are arranged on the valve plate (11), the spring (12) and the valve rod (10) are both configured along the gas flowing direction, the end of the spring (12) is fixed on the bottom wall inside the gas outlet pipeline (3), a cylindrical block (13) is arranged at the end of the valve rod (10), a wall in contact with the cylindrical block (13) is arranged on the surface of the cylindrical block (13), the cylindrical block (13) slides along the wall surface, a through hole (16) is arranged on the cylindrical block (13), a first gas inlet connecting pipe (14) communicated with the gas inlet pipeline (2) and a second gas inlet connecting pipe (15) communicated with the gas outlet pipeline (3) are arranged on the wall at one end of the through hole (16), and a first conduit (17) communicated with a pressure difference meter (18) is arranged on the wall where the other end of the through hole (16) is positioned, and the pressure difference meter (18) is communicated with the air outlet pipeline (3) through a second conduit (19).

3. A gas filter with filter element clogging display according to claim 2, characterized in that said through hole (16) is triangular cavity shaped, with small openings at the side of the first inlet connection pipe (14) and the second inlet connection pipe (15) and large openings at the side of the first duct (17).

4. The gas filter capable of displaying the blocking degree of the filter element according to the claim 2, characterized in that the wall around the cylindrical block (13) is integrated with the inner wall of the gas outlet pipeline (3) to form a sealing chute for accommodating the cylindrical block (13), a guide cylinder (9) is arranged on the wall of the gas outlet pipeline (3), and the valve rod (10) extends into the sealing chute through the guide cylinder (9).

5. The gas filter capable of displaying the blocking degree of the filter element is characterized in that the sealing assembly comprises an annular sheet (5) arranged at the joint of the filter element (4) and the gas outlet pipeline (3), an annular clamping strip (7) is arranged on the surface, contacting with the gas outlet pipeline (3), of the annular sheet (5), and an annular clamping groove (8) matched with the annular clamping strip (7) is arranged on the gas outlet pipeline (3).

6. A gas filter capable of displaying the blocking degree of a filter element according to claim 5, characterized in that the surface of the annular sheet (5) is provided with a groove (6) for accommodating a valve plate opening mechanism.

7. A gas filter with filter element blockage display according to claim 1, characterized in that the top end of the housing (1) is provided with a top cover, and the bottom end of the housing (1) is provided with a drain valve.