Modularized waste gas filtering device

Abstract

The utility model discloses a modularized waste gas filtering device, which relates to the technical field of waste gas treatment and comprises at least two waste gas filtering unit devices connected in series, each unit comprises an external waste gas treatment box and an internal rotatable filter element box, the filter element box is filled with a filter medium, and unit gas inlets and unit gas outlets which are uniformly distributed in the circumferential direction are respectively formed in two ends of the filter element box. By rotating the filter element box, different unit gas ports can be selected to be communicated with the corresponding-stage gas port of the treatment box, so that dynamic switching of the filter channels is realized. By rotating the filter element box, a unit gas inlet / gas outlet is selectively communicated with a corresponding-stage gas port of the treatment box, a waste gas circulation path is dynamically switched along with rotation of the filter element box, particulate matters are forced to be uniformly deposited in different areas of a filter medium, the design can delay the occurrence time of local blockage, and the effective utilization rate of the filter medium is greatly improved; the filter element replacement frequency is obviously reduced.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, and more specifically, to a modular waste gas filtration device. Background Technology

[0002] Existing industrial waste gas filtration systems generally employ a multi-stage series filtration structure, using multiple fixed filter elements to intercept pollutants step by step. However, this design has significant drawbacks: because the waste gas always passes through the fixed filter elements along the same path, particulate matter accumulates rapidly in the filter element inlet area, causing localized blockage. The unblocked areas of the filter element still have filtration capacity, but because the waste gas flow path cannot be switched, the effective capacity of the medium is wasted, and frequent filter element replacements increase operation and maintenance costs. Utility Model Content

[0003] The present invention provides a modular exhaust gas filtration device that can solve the above-mentioned problems.

[0004] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0005] A modular exhaust gas filtration device includes at least two exhaust gas filtration unit devices connected in series.

[0006] Each of the aforementioned exhaust gas filtration unit devices includes:

[0007] The external exhaust gas treatment box has a cylindrical cavity inside, with an air inlet at the first end and an air outlet at the second end.

[0008] The internal filter box is a cylindrical structure that is coaxially fitted inside the exhaust gas treatment box and can rotate around the axis, and is filled with filter media.

[0009] The filter cartridge box has multiple unit air inlets evenly distributed circumferentially at its first end and multiple unit air outlets evenly distributed circumferentially at its second end.

[0010] The mating surfaces of the exhaust gas treatment box and the filter box are provided with a sealing structure;

[0011] By rotating the filter cartridge box, the unit air inlet can be connected to the stage air inlet, and the corresponding unit air outlet can be connected to the stage air outlet.

[0012] In two adjacent exhaust gas filtration unit devices, the exhaust port of the previous stage is connected to the intake port of the next stage, forming a multi-stage series filtration channel.

[0013] Furthermore, the filter cartridge box is rigidly connected to a rotating shaft on the same axis. The rotating shaft is rotatably mounted on the second end of the exhaust gas treatment box via a sealed bearing seat, and a rotating handle is provided on the extended end of the rotating shaft.

[0014] Furthermore, the first end of the exhaust gas treatment box is provided with a detachable first box cover, and the main air inlet is opened on the first box cover.

[0015] Furthermore, the sealing structure includes a first sealing gasket and a second sealing gasket; the first sealing gasket is disposed between the first box cover and the first end of the filter box, and does not cover the unit air inlet; the second sealing gasket is disposed between the second end of the filter box and the second end of the cylindrical cavity, and does not cover the unit air outlet, and the rotating shaft passes through the center of the second sealing gasket.

[0016] Furthermore, the first end of the filter box is provided with a second box cover, the unit air inlet is evenly distributed along the circumference of the second box cover, and the second box cover is fixedly connected to the filter box by a positioning pin; the first sealing gasket is located between the second box cover and the first box cover.

[0017] Furthermore, a first radial sealing ring is provided between the outer peripheral surface of the filter cartridge box and the inner peripheral surface of the exhaust gas treatment box.

[0018] Furthermore, the filter medium has a cylindrical module structure, and a second radial sealing ring is provided between its outer circumferential surface and the inner wall of the filter cartridge box.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] This device allows the unit's air inlet / outlet to connect with the treatment chamber's main air inlet by rotating the filter box. The exhaust gas flow path dynamically switches as the filter box rotates, forcing particulate matter to be deposited evenly in different areas of the filter medium. This design can delay the occurrence of local blockages and greatly improve the effective utilization rate of the filter medium, significantly reducing the frequency of filter replacement.

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, embodiments of this utility model are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the modular exhaust gas filtration device;

[0024] Figure 2 This is a schematic diagram of the first structure of the exhaust gas filtration unit device;

[0025] Figure 3 This is a schematic diagram of the second structure of the exhaust gas filtration unit device;

[0026] Figure 4 This is an exploded structural diagram of the exhaust gas filtration unit.

[0027] Figure 5 This is a cross-sectional structural diagram of the exhaust gas filtration unit.

[0028] In the diagram: 1. Exhaust gas treatment box; 2. Main stage outlet; 3. Sealed bearing seat; 4. Rotating handle; 5. Second sealing gasket; 6. Unit outlet; 7. Filter cartridge box; 8. First radial sealing ring; 9. Filter medium; 10. Second radial sealing ring; 11. Unit inlet; 12. Second box cover; 13. Positioning pin; 14. First sealing gasket; 15. First box cover; 16. Main stage inlet; 17. Rotating shaft; 18. Exhaust gas filtration unit device. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0030] like Figure 1 As shown, this embodiment provides a modular exhaust gas filtration device, including three exhaust gas filtration unit devices 18 connected in series.

[0031] like Figures 2-5 As shown, each exhaust gas filtration unit 18 includes:

[0032] The external exhaust gas treatment box 1 has a cylindrical cavity inside, with an air inlet 16 at the first end and an air outlet 2 at the second end. The internal filter box 7 is a cylindrical structure coaxially fitted inside the exhaust gas treatment box 1 and rotatable around its axis, filled with filter media 9. Multiple unit air inlets 11 are evenly distributed around the first end of the filter box 7, and multiple unit air outlets 6 are evenly distributed around the second end. The mating surfaces of the exhaust gas treatment box 1 and the filter box 7 are provided with a sealing structure. By rotating the filter box 7, one of the unit air inlets 11 can be connected to the air inlet 16, and the corresponding unit air outlet 6 can be connected to the air outlet 2.

[0033] In two adjacent exhaust gas filtration unit devices 18, the exhaust port 2 of the previous stage is connected to the intake port 16 of the next stage, forming a multi-stage series filtration channel, see Figure 1As shown. The inlet 16 of the first-stage exhaust gas filtration unit 18 is the main air inlet of the unit, and the outlet 2 of the last-stage exhaust gas filtration unit 18 is the main air outlet of the unit.

[0034] In this embodiment, multiple exhaust gas filtration units are connected in series to form a multi-stage filtration channel. In each unit, exhaust gas enters the exhaust gas treatment box 1 from the inlet 16 of that stage, and selects different unit inlets 11 to contact the filter medium 9 by rotating the filter cartridge box 7. After filtration, the gas flows out from the corresponding unit outlet 6.

[0035] In one optional embodiment of this utility model, such as Figure 5 As shown, the filter cartridge box 7 is rigidly connected to the rotating shaft 17 on the same axis. The rotating shaft 17 is rotatably mounted on the second end of the exhaust gas treatment box 1 via a sealed bearing seat 3, and a rotating handle 4 is provided on the extended end of the rotating shaft 17. The rotating handle 4 can switch the filter channel without stopping the machine or disassembling the equipment. The bearing seat design takes into account both rotational flexibility and airtightness to prevent exhaust gas leakage.

[0036] In addition to using a manual rotating handle 4, a geared motor can also be used to drive the rotating shaft 17 to rotate.

[0037] In an optional embodiment of this utility model, the first end of the exhaust gas treatment box 1 is provided with a detachable first box cover 15, which facilitates the installation or replacement of the filter box 7, and the air inlet 16 of this stage is opened on the first box cover 15.

[0038] In one optional embodiment of this utility model, such as Figures 2-5 As shown, the sealing structure includes a first sealing gasket 14 and a second sealing gasket 5; the first sealing gasket 14 is located between the first cover 15 and the first end of the filter box 7, and does not cover the unit air inlet 11; the second sealing gasket 5 is located between the second end of the filter box 7 and the second end of the cylindrical cavity, and does not cover the unit air outlet 6, and the rotating shaft 17 passes through the center of the second sealing gasket 5.

[0039] The first sealing gasket 14 (inlet end) and the second sealing gasket 5 (outlet end) cover the non-working area respectively, separating the air ports of each unit to ensure that the gas passes through the designated air port.

[0040] In an optional embodiment of this utility model, a second cover 12 is provided at the first end of the filter cartridge box 7, and the unit air inlet 11 is evenly distributed around the second cover 12. The second cover 12 is fixedly connected to the filter cartridge box 7 by a positioning pin 13; the first sealing gasket 14 is located between the second cover 12 and the first cover 15. The design of the second cover 12 is to facilitate the replacement of the internal filter medium 9.

[0041] In an optional embodiment of this utility model, a first radial sealing ring 8 is provided between the outer peripheral surface of the filter cartridge 7 and the inner peripheral surface of the exhaust gas treatment box 1, thereby preventing exhaust gas from short-circuiting through the gap between the outer wall of the filter cartridge 7 and the inner wall of the treatment box.

[0042] The filter medium 9 has a cylindrical module structure, and a second radial sealing ring 10 is provided between its outer circumference and the inner wall of the filter cartridge box 7 to force airflow through the filter medium 9 instead of the edge gaps.

[0043] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A modular exhaust gas filtration device, characterized in that, Includes at least two exhaust gas filtration unit devices (18) connected in series; Each of the aforementioned exhaust gas filtration unit devices (18) includes: The external exhaust gas treatment box (1) has a cylindrical cavity inside, with an air inlet (16) at the first end and an air outlet (2) at the second end. The internal filter box (7) is a cylindrical structure that is coaxially fitted inside the exhaust gas treatment box (1) and can rotate around the axis, and is filled with filter medium (9). The filter box (7) has multiple unit air inlets (11) evenly distributed around its first end and multiple unit air outlets (6) evenly distributed around its second end. The mating end face of the exhaust gas treatment box (1) and the filter box (7) is provided with a sealing structure; By rotating the filter box (7), the unit air inlet (11) and the stage air inlet (16) can be connected to each other, and the corresponding unit air outlet (6) and the stage air outlet (2) can be connected to each other. In two adjacent exhaust gas filtration unit devices (18), the exhaust outlet (2) of the previous stage is connected to the exhaust inlet (16) of the next stage, forming a multi-stage series filtration channel.

2. The modular exhaust gas filtration device according to claim 1, characterized in that, The filter box (7) is coaxially rigidly connected to the rotating shaft (17). The rotating shaft (17) is rotatably assembled to the second end of the exhaust gas treatment box (1) through a sealed bearing seat (3), and a rotating handle (4) is provided on the extended end of the rotating shaft (17).

3. The modular exhaust gas filtration device according to claim 2, characterized in that, The first end of the exhaust gas treatment box (1) is provided with a detachable first box cover (15), and the main air inlet (16) is opened on the first box cover (15).

4. The modular exhaust gas filtration device according to claim 3, characterized in that, The sealing structure includes a first sealing gasket (14) and a second sealing gasket (5); the first sealing gasket (14) is located between the first box cover (15) and the first end of the filter box (7), and does not cover the unit air inlet (11); the second sealing gasket (5) is located between the second end of the filter box (7) and the second end of the cylindrical cavity, and does not cover the unit air outlet (6); the rotating shaft (17) passes through the center of the second sealing gasket (5).

5. The modular exhaust gas filtration device according to claim 4, characterized in that, The first end of the filter box (7) is provided with a second box cover (12), the unit air inlet (11) is evenly distributed around the second box cover (12), and the second box cover (12) is fixedly connected to the filter box (7) by a positioning pin (13); the first sealing gasket (14) is located between the second box cover (12) and the first box cover (15).

6. The modular exhaust gas filtration device according to claim 1, characterized in that, A first radial sealing ring (8) is provided between the outer peripheral surface of the filter box (7) and the inner peripheral surface of the exhaust gas treatment box (1).

7. The modular exhaust gas filtration device according to claim 1, characterized in that, The filter medium (9) has a cylindrical module structure, and a second radial sealing ring (10) is provided between its outer circumference and the inner wall of the filter box (7).

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