Waste gas filter element convenient for replacing filter material

Abstract

The utility model relates to the technical field of waste gas treatment, and discloses a waste gas filter element convenient for replacing a filter material, which comprises an upper clamping cover, a lower clamping cover and a polyurethane elastic sleeve, the upper clamping cover and the lower clamping cover are clamped with each other, an air inlet is formed in the top of the upper clamping cover, a sealing top plate is installed at the top of the air inlet through screws, rubber limiting sleeves are evenly distributed on the sealing top plate through installation holes, waste gas dispersion pipes are arranged in the rubber limiting sleeves in a sleeved mode, and an upper limiting groove and a lower limiting groove are formed in the upper clamping cover and the lower clamping cover respectively. Activated carbon filter screens are laid in the lower limiting groove, a non-woven fabric filter screen is arranged between the activated carbon filter screens, an annular pressing piece is arranged on the outer edge of the top of the non-woven fabric filter screen in a press fit mode, and pressing springs are installed at the top of the annular pressing piece at equal intervals through positioning pieces. The waste gas filter element realizes limiting of the filter material, is good in sealing performance, does not need to be fixed by screws, avoids leakage caused by damage of the filter material by the screws, is convenient to mount and dismount, and quickly realizes replacement of the filter material.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to an exhaust gas filter element which is convenient for replacing filter materials. Background Technique

[0002] The exhaust gas filter element filters and purifies harmful substances in the exhaust gas, such as particulate matter, nitrogen oxides, etc., to reduce pollutant emissions. With the increasingly strict environmental protection regulations and the continuous progress of automotive technology, the performance and efficiency of the exhaust gas filter element will continue to improve. In the future, the exhaust gas filter element may adopt more advanced materials and technologies to better meet the environmental protection requirements and improve vehicle performance. At the same time, with the popularization and development of new energy vehicles, the market demand for exhaust gas filter elements will also change.

[0003] The previous exhaust gas filter elements have the following disadvantages: 1. To limit the filter material, screws need to be fixed. The screws are easy to damage the filter material and cause leakage, which is not convenient for installation and disassembly, and cannot quickly replace the filter material. Therefore, those skilled in the art provide an exhaust gas filter element which is convenient for replacing filter materials to solve the problems raised in the above background technique. Content of the Utility Model

[0004] The main purpose of the utility model is to provide an exhaust gas filter element which is convenient for replacing filter materials to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] An exhaust gas filter element which is convenient for replacing filter materials, comprising an upper cover, a lower cover and a polyurethane elastic sleeve;

[0007] The upper cover and the lower cover are engaged with each other. An air inlet is provided at the top of the upper cover, and a sealing top plate is installed at the top of the air inlet through screws. Rubber limiting sleeves are evenly arranged on the sealing top plate through mounting holes, and an exhaust gas dispersion pipe is sleeved inside the rubber limiting sleeves. Upper limiting grooves and lower limiting grooves are respectively arranged inside the upper cover and the lower cover. An activated carbon filter screen is laid in the lower limiting groove, and a non-woven filter screen is arranged between the activated carbon filter screens. An annular pressing piece is pressed on the outer edge of the top of the non-woven filter screen. Pressing springs are equidistantly installed at the top of the annular pressing piece through positioning pieces. A pressing piece is arranged at the top of the pressing spring and presses on the inner top of the upper limiting groove.

[0008] As a further scheme of the utility model: Sealing grooves are provided at the engaging ports of the upper cover and the lower cover, and rubber sealing rings are filled in the sealing grooves. By virtue of the high elasticity and good sealing effect of the rubber sealing rings, leakage at the connection between the upper cover and the lower cover is avoided.

[0009] As a further solution of the utility model: Polyurethane elastic sleeves are sleeved on the outer edges of the upper cover and the lower cover. The polyurethane elastic sleeves facilitate sleeving the whole device in the cylinder body of the filter, and the elasticity of the polyurethane elastic sleeves is used for fixation.

[0010] As a further solution of the utility model: An exhaust port is arranged at the bottom of the lower cover.

[0011] As a further solution of the utility model: The upper cover and the lower cover are fixed by butting bolts.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The upper cover and the lower cover are fixed by butting bolts, so that the non-woven fabric filter screen and the activated carbon filter screen are tightly pressed and fixed in the lower limit groove by the annular pressing piece. The pressing piece presses against the top inside the upper limit groove and presses the annular pressing piece under the action of the spring elasticity, realizing the limit of the filter material. The sealing performance is good. There is no need for screw fixation, avoiding screw damage to the filter material and causing leakage. The polyurethane elastic sleeves facilitate sleeving the whole device in the cylinder body of the filter, and the elasticity of the polyurethane elastic sleeves is used for fixation.

[0014] 2. The waste gas enters the upper cover from the waste gas dispersion pipe. The waste gas dispersion pipe is used to evenly disperse the waste gas, which acts evenly on the filter material. The activated carbon filter screen is used to adsorb harmful substances and peculiar smells in the waste gas, and the non-woven fabric filter screen is used to filter particulate matters in the gas, improving the treatment effect. Removing the butting bolts to separate the upper cover and the lower cover automatically disengages the annular pressing piece and the pressing spring, facilitating installation and disassembly, and quickly realizing the replacement of the filter material. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of an exhaust gas filter element for facilitating the replacement of filter material according to the utility model.

[0016] Figure 2 It is an exploded view of an exhaust gas filter element for facilitating the replacement of filter material according to the utility model.

[0017] Figure 3 It is a schematic diagram of the structure of the upper limit groove of an exhaust gas filter element for facilitating the replacement of filter material according to the utility model.

[0018] Figure 4 It is an exhaust gas filter element for facilitating the replacement of filter material according to the utility model Figure 2 and is a schematic diagram of the structure at position A.

[0019] In the figure: 1. Exhaust gas dispersion pipe; 2. Rubber limit sleeve; 3. Docking bolt; 4. Upper cover; 5. Sealing top plate; 6. Polyurethane elastic sleeve; 7. Annular pressing piece; 8. Pressing spring; 9. Activated carbon filter screen; 10. Non-woven fabric filter screen; 11. Rubber sealing ring; 12. Sealing groove; 13. Lower cover; 14. Lower limit groove; 15. Upper limit groove; 16. Positioning piece; 17. Pressing piece; 18. Air inlet; 19. Exhaust port. Detailed implementation mode

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1-4 , in the embodiment of the present invention, an exhaust gas filter element convenient for replacing filter materials includes an upper cover 4, a lower cover 13 and a polyurethane elastic sleeve 6;

[0022] The upper cover 4 and the lower cover 13 are engaged with each other. An air inlet 18 is opened at the top of the upper cover 4, and a sealing top plate 5 is installed at the top of the air inlet 18 through screws. Rubber limit sleeves 2 are uniformly arranged on the sealing top plate 5 through mounting holes, and an exhaust gas dispersion pipe 1 is sleeved inside the rubber limit sleeves 2. Upper limit grooves 15 and lower limit grooves 14 are respectively arranged inside the upper cover 4 and the lower cover 13. An activated carbon filter screen 9 is laid in the lower limit groove 14, and a non-woven fabric filter screen 10 is arranged between the activated carbon filter screens 9. An annular pressing piece 7 is pressed on the outer edge of the top of the non-woven fabric filter screen 10. Pressing springs 8 are equidistantly installed at the top of the annular pressing piece 7 through positioning pieces 16. A pressing piece 17 is arranged at the top of the pressing spring 8, and the pressing piece 17 is pressed on the inner top of the upper limit groove 15.

[0023] Among them, sealing grooves 12 are opened at the engaging ports of the upper cover 4 and the lower cover 13, and rubber sealing rings 11 are filled in the sealing grooves 12; the high elasticity and good sealing effect of the rubber sealing rings 11 are utilized to avoid leakage at the connection between the upper cover 4 and the lower cover 13.

[0024] Among them, polyurethane elastic sleeves 6 are sleeved on the outer edges of the upper cover 4 and the lower cover 13; the polyurethane elastic sleeves 6 are utilized to facilitate sleeving the whole device inside the cylinder body of the filter, and the elasticity of the polyurethane elastic sleeves 6 is utilized for fixation.

[0025] Among them, an exhaust port 19 is arranged at the bottom of the lower cover 13; the filtered and purified gas is discharged through the exhaust port 19 at the bottom of the lower cover 13.

[0026] Among them, the upper cover 4 and the lower cover 13 are fixed by butting bolts 3; removing the butting bolts 3 separates the upper cover 4 and the lower cover 13.

[0027] The working principle of the utility model is as follows: The upper cover 4 and the lower cover 13 are fixed by butting bolts 3, so that the non-woven filter screen 10 and the activated carbon filter screen 9 are pressed and fixed in the lower limit groove 14 by the annular pressing piece 7, and the pressing piece 17 is pressed against the top in the upper limit groove 15. Under the action of the spring force, the annular pressing piece 7 is pressed, realizing the limit of the filter material. The sealing performance is good, and no screws are needed for fixing, avoiding the damage of the filter material by the screws and causing leakage. The polyurethane elastic sleeve 6 is used to facilitate the sleeving of the whole device in the cylinder body of the filter, and the elastic force of the polyurethane elastic sleeve 6 is used for fixing. The waste gas enters the upper cover 4 from the waste gas dispersion pipe 1, and the waste gas dispersion pipe 1 is used to realize the uniform dispersion of the waste gas, acting uniformly on the filter material. The activated carbon filter screen 9 is used to adsorb harmful substances and peculiar smells in the waste gas, and the non-woven filter screen 10 is used to filter particulate matters in the gas, improving the treatment effect. Removing the butting bolts 3 separates the upper cover 4 and the lower cover 13, automatically separating the annular pressing piece 7 and the pressing spring 8, facilitating installation and disassembly, and quickly realizing the replacement of the filter material.

[0028] The above is only the preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the utility model, according to the technical solution of the utility model and its inventive concept, makes equivalent replacement or change, and should be covered by the protection scope of the utility model.

Claims

1. An exhaust gas filter element facilitating the replacement of filter media, comprising an upper clamping cover (4), a lower clamping cover (13) and a polyurethane elastic sleeve (6); It is characterized in that; The upper clamping cover (4) and the lower clamping cover (13) are clamped with each other. An air inlet (18) is formed at the top of the upper clamping cover (4), and a sealing top plate (5) is installed at the top of the air inlet (18) through screws. Rubber limit sleeves (2) are evenly arranged on the sealing top plate (5) through mounting holes, and an exhaust gas dispersion pipe (1) is sleeved in the rubber limit sleeves (2). Upper limit grooves (15) and lower limit grooves (14) are respectively arranged inside the upper clamping cover (4) and the lower clamping cover (13). An activated carbon filter screen (9) is laid in the lower limit groove (14), and a non-woven fabric filter screen (10) is arranged between the activated carbon filter screens (9). An annular pressing sheet (7) is pressed on the outer edge of the top of the non-woven fabric filter screen (10). Pressing springs (8) are equidistantly installed at the top of the annular pressing sheet (7) through positioning sheets (16). A pressing sheet (17) is arranged at the top of the pressing spring (8), and the pressing sheet (17) is pressed on the inner top of the upper limit groove (15).

2. The waste gas filter element facilitating filter material replacement according to claim 1, wherein: Sealing grooves (12) are formed at the clamping ports of the upper clamping cover (4) and the lower clamping cover (13), and rubber sealing rings (11) are filled in the sealing grooves (12).

3. The exhaust gas filter element facilitating the replacement of filter media according to claim 1, wherein: Polyurethane elastic sleeves (6) are sleeved on the outer edges of the upper clamping cover (4) and the lower clamping cover (13).

4. The exhaust gas filter element facilitating filter material replacement according to claim 1, wherein: An exhaust port (19) is arranged at the bottom of the lower clamping cover (13).

5. The waste gas filter element facilitating filter media replacement according to claim 1, wherein: The upper clamping cover (4) and the lower clamping cover (13) are clamped and fixed through docking bolts (3).

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