An exhaust gas treatment device with a filter core that is easy to clean

Abstract

This utility model relates to the field of waste gas treatment, specifically a waste gas treatment device for easy cleaning of filter elements. It includes a jetting mechanism for reverse cleaning of the bag filter mechanism and an auxiliary cleaning mechanism for improving the cleaning effect of the jetting mechanism. The jetting mechanism is installed at the upper outlet of the bag filter mechanism, and the auxiliary cleaning mechanism is installed inside the bag filter mechanism near the jetting mechanism. By setting the auxiliary cleaning mechanism at the outlet of the bag filter mechanism, the collected airflow during filtration drives the bottom dispersing cone to float upwards, causing the inner support rod to contract and deform the filter bag, thus improving filtration efficiency. During reverse cleaning, the wind force drives the top dispersing cone downwards, causing the connecting ring supporting the filter bag to expand rapidly outwards. Simultaneously, the conical structure of the top dispersing cone enhances the wind diffusion effect, and the expansion of the inner support rod increases the degree of filter hole deformation, significantly improving the cleaning effect and achieving efficient synergy between the filtration and cleaning processes.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment, and in particular to a waste gas treatment device with an easy-to-clean filter element. Background Technology

[0002] In the field of waste gas treatment equipment, baghouse dust collectors are a type of highly efficient dry dust collection device, widely used in industrial production to treat dust-laden waste gas and reduce dust emissions. Its core working component is the filter bag, typically made of natural or synthetic fibers, which has good air permeability and filtration performance. When dust-laden gas enters the dust collector, the airflow velocity decreases. Large dust particles settle due to gravity, while fine dust particles are carried by the airflow through the filter bag and trapped on its surface. The purified gas is then discharged from the outlet. As filtration continues, the dust layer on the filter bag surface thickens, affecting filtration efficiency and system resistance. Therefore, baghouse dust collectors are usually equipped with cleaning devices, such as pulse jet cleaning, mechanical vibration, or reverse air blowing, to periodically remove the accumulated dust on the filter bags to maintain stable equipment operation. The advantages of baghouse dust collectors are significant: high dust removal efficiency, with a collection efficiency of over 99% for fine particles; wide adaptability, capable of handling dust of different concentrations and properties; stable operation; and relatively simple operation and maintenance. However, its filter bags are susceptible to high temperatures and corrosive gases, requiring the selection of appropriate filter media based on operating conditions. Currently, baghouse dust collectors play a vital role in industries such as power, metallurgy, chemical, and building materials, serving as a key piece of equipment for controlling industrial dust pollution and improving air quality.

[0003] In the prior art, compared with the Chinese utility model with announcement number CN209714532U, which discloses a filtration device for treating organic waste gas with easy-to-clean filter element, it increases the working time of the filter element by adding multiple layers of filtration and cleaning with the internal cleaning structure. However, in the field of waste gas treatment, the use of such equipment is to treat particulate matter and toxic substances contained in waste gas in large quantities for a long time, and to carry out intermittent and rapid cleaning with the backwashing mechanism. In the current field of bag dust collectors, although pulse backwashing can shake off the dust adhering to the outside of the filter bag by reverse wind force and shaking, it has been found in actual use that the reverse spraying surface of the nozzle is not extensive, and the effect of single vertical shaking is not ideal. Utility Model Content

[0004] The purpose of this invention is to provide a waste gas treatment device that facilitates cleaning of the filter element in order to solve the above-mentioned problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A waste gas treatment device with an easy-to-clean filter element includes a bag filter mechanism for providing filtration and a sealing mechanism for providing a filtration environment. The bag filter mechanism is installed inside the sealing mechanism. The device also includes a jet cleaning mechanism for performing reverse cleaning of the bag filter mechanism and an auxiliary cleaning mechanism for improving the cleaning effect of the jet cleaning mechanism. The jet cleaning mechanism is installed at the upper outlet position of the bag filter mechanism, and the auxiliary cleaning mechanism is installed on the inner side of the bag filter mechanism near the jet cleaning mechanism.

[0007] The bag filter mechanism includes a top fixing frame, a bag fixing ring connected to the bottom of the top fixing frame, a filter bag fixedly connected to the bottom of the bag fixing ring, a plurality of inner support rods arranged in a circular array on the inner side of the bag fixing ring, a bottom fixing ring connected to the bottom of the inner support rods, and a central support ring evenly arranged from top to bottom on the inner support rods.

[0008] The auxiliary cleaning mechanism includes a central force-bearing block. Several support rods are arranged in a circular array on the outer side of the center of the central force-bearing block. The support rods are connected to inner support rods through connecting rings. The inner support rods are engaged with the connecting rings. The central force-bearing block includes a top dispersion cone, a central frame, and a bottom dispersion cone. The central frame is located in the middle and is cylindrical. The central force-bearing block and the connecting ring are symmetrically installed at the upper and lower ends of the central frame.

[0009] Preferably, both the top dispersion cone and the bottom dispersion cone are formed with a plurality of spiral grooves, and the spiral directions are opposite.

[0010] Preferably, the support rod is made of steel wire.

[0011] Preferably, the top fixing frame has a trumpet-shaped cross-section, with a large opening at the top and a small opening at the corresponding position of the central force-bearing block. The horizontal plane of the central force-bearing block and the small opening of the top fixing frame overlap horizontally.

[0012] Preferably, the top of the inner support rod is fixed to the top fixing frame, the bottom of the inner support rod is fixed to the bottom fixing ring, and the central support ring is snapped into the inner support rod.

[0013] Preferably, the blowing mechanism includes an air storage pipe, an air pipe, and a pulse nozzle. The pulse nozzle is located at the outlet position of the top fixed frame. The top of the pulse nozzle is connected to the air pipe via a thread, and the air supply end of the air pipe is connected to the air storage pipe.

[0014] Preferably, the sealing mechanism includes a sealing cover, a filter box, a dust collection funnel, and a waste discharge valve. The top of the filter box and the sealing cover are separated by a partition. The position of the partition is flush with the position of the top fixing frame. The dust collection funnel is installed at the bottom of the sealing cover via a flange, and the waste discharge valve is installed at the bottom of the dust collection funnel via a flange.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] By setting an auxiliary cleaning mechanism at the outlet of the bag filter mechanism, the bottom dispersing cone can be driven to float upward by the collected air during filtration, which in turn causes the inner support rod to contract and deform the filter bag, thereby improving filtration efficiency. During reverse cleaning, the top dispersing cone is driven to move downward by the wind, which causes the connecting ring to support the filter bag to expand rapidly outward. At the same time, the conical structure of the top dispersing cone enhances the wind diffusion effect, and the expansion of the inner support rod increases the degree of deformation of the filter holes, significantly improving the cleaning effect. This achieves efficient synergy between the filtration and cleaning processes, and the modification of existing equipment is simple, making it easy to install and use. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the exhaust gas treatment device for easy cleaning of the filter element described in this utility model;

[0019] Figure 2 This utility model describes a waste gas treatment device with an easy-to-clean filter element. Figure 1 Schematic diagram of the structure at point A in the middle;

[0020] Figure 3 This is a schematic diagram of the top fixing frame structure of the exhaust gas treatment device with easy-to-clean filter element described in this utility model;

[0021] Figure 4 This is a schematic diagram of the internal structure of the top fixing frame of the exhaust gas treatment device for easy cleaning of filter elements, as described in this utility model, in conjunction with the auxiliary cleaning mechanism;

[0022] Figure 5 This is a schematic diagram of the auxiliary cleaning mechanism and the internal support rod of the exhaust gas treatment device for easy cleaning of filter elements described in this utility model;

[0023] Figure 6This is a schematic diagram of the auxiliary cleaning mechanism of the exhaust gas treatment device for easy cleaning of filter elements as described in this utility model;

[0024] Figure 7 This is a force analysis diagram of the auxiliary cleaning mechanism during filtration of a waste gas treatment device with an easy-to-clean filter element, as described in this utility model.

[0025] Figure 8 This is a force analysis diagram of the auxiliary cleaning mechanism during reverse cleaning of the exhaust gas treatment device for easy cleaning of filter elements described in this utility model.

[0026] The annotations in the attached figures are explained as follows:

[0027] 1. Sealing mechanism; 2. Bag filter mechanism; 3. Pulse blowing mechanism; 4. Auxiliary cleaning mechanism; 11. Sealing cover; 12. Filter box; 13. Dust collection funnel; 14. Waste discharge valve; 21. Top fixing frame; 22. Bag fixing ring; 23. Filter bag; 24. Bottom fixing ring; 25. Inner support rod; 26. Central support ring; 31. Air storage pipe; 32. Air pipe; 33. Pulse nozzle; 41. Central force block; 42. Support rod; 43. Connecting ring; 411. Top dispersion cone; 412. Central frame; 413. Bottom dispersion cone. Detailed Implementation

[0028] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] The present invention will be further described below with reference to the accompanying drawings:

[0031] like Figures 1-8 As shown, an exhaust gas treatment device that facilitates filter element cleaning includes a bag filter mechanism 2 for providing filtration and a sealing mechanism 1 for providing a filtration environment. The bag filter mechanism 2 is installed inside the sealing mechanism 1. The device also includes a jet cleaning mechanism 3 for performing reverse cleaning of the bag filter mechanism 2 by jet cleaning and an auxiliary cleaning mechanism 4 for improving the cleaning effect of the jet cleaning mechanism 3. The jet cleaning mechanism 3 is installed at the upper outlet position of the bag filter mechanism 2, and the auxiliary cleaning mechanism 4 is installed inside the bag filter mechanism 2 near the jet cleaning mechanism 3.

[0032] The bag filter mechanism 2 includes a top fixing frame 21, a bag fixing ring 22 connected to the bottom of the top fixing frame 21, a filter bag 23 fixedly connected to the bottom of the bag fixing ring 22, a number of inner support rods 25 are installed in a circular array on the inner side of the bag fixing ring 22, a bottom fixing ring 24 is connected to the bottom of the inner support rods 25, and a central support ring 26 is evenly arrayed from top to bottom on the inner support rods 25;

[0033] The auxiliary cleaning mechanism 4 includes a central force-bearing block 41. Several support rods 42 are arranged in a circular array on the outer side of the center of the central force-bearing block 41. The support rods 42 are connected to the inner support rods 25 through the connecting rings 43. The inner support rods 25 are engaged with the connecting rings 43. The central force-bearing block 41 includes a top dispersion cone 411, a central frame 412, and a bottom dispersion cone 413. The central frame 412 is located in the middle and is cylindrical. The central force-bearing block 41 and the connecting rings 43 are symmetrically installed at the upper and lower ends of the central frame 412.

[0034] In this embodiment, the top dispersion cone 411 and the bottom dispersion cone 413 are each formed with a number of spiral grooves, and the spiral directions are opposite. Using the spiral grooves, when subjected to wind force, the inner support rod 25 can be driven to twist through the support rod 42 and the connecting ring 43.

[0035] In this embodiment, the strut 42 is made of steel wire, providing support and elasticity.

[0036] In this embodiment, the top fixing frame 21 has a trumpet-shaped cross-section, with a large opening at the top and a small opening at the corresponding position of the central force-bearing block 41. The horizontal plane of the central force-bearing block 41 and the small opening of the top fixing frame 21 overlap horizontally.

[0037] In this embodiment, the top of the inner support rod 25 is fixedly connected to the top fixing bracket 21, the bottom of the inner support rod 25 is fixedly connected to the bottom fixing ring 24, and the central support ring 26 is snapped into the inner support rod 25 for easy installation.

[0038] In this embodiment, the blowing mechanism 3 includes an air storage pipe 31, an air pipe 32, and a pulse nozzle 33. The pulse nozzle 33 is located at the outlet position of the top fixing frame 21. The top of the pulse nozzle 33 is connected to the air pipe 32 by a thread, and the air supply end of the air pipe 32 is connected to the air storage pipe 31.

[0039] In this embodiment, the sealing mechanism 1 includes a sealing cover 11, a filter box 12, a dust collection funnel 13, and a waste discharge valve 14. The top of the filter box 12 and the sealing cover 11 are separated by a partition. The position of the partition is flush with the position of the top fixing frame 21. The dust collection funnel 13 is installed at the bottom of the sealing cover 11 through a flange, and the waste discharge valve 14 is installed at the bottom of the dust collection funnel 13 through a flange.

[0040] Working principle: An auxiliary cleaning mechanism 4 is installed at the outlet of the bag filter mechanism 2. During filtration, exhaust gas from outside the filter box 12 impacts the filter bag 23 through the air inlet pipe of the filter box 12. After filtration by the filter bag 23, the collected air impacts the bottom dispersing cone 413 from the outlet of the top fixed frame 21. This causes the bottom dispersing cone 413 to float upwards via the support rod 42 and connecting ring 43. Simultaneously, the wind force blows the spiral grooves on the bottom dispersing cone 413, causing several inner support rods 25 to contract inwards. Figure 7 As shown, this forces the filter bag 23 to deform. When reverse cleaning is required using the pulse nozzle 33, the air force blows the top dispersion cone 411, causing the central force block 41, support rod 42, and connecting ring 43 to move rapidly downwards. This allows the connecting ring 43 to support the bottom fixing ring 24 and the filter bag 23 to expand rapidly outwards. Figure 8 As shown, the cone shape of the top dispersion cone 411 is used to improve the diffusion of the reverse blowing force, improve the vibration effect of the filter bag 23, and the expansion of the inner support rod 25 is used to improve the deformation degree of the filter holes on the filter bag 23, thereby improving the reverse cleaning effect of the filter bag 23.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A waste gas treatment device with an easy-to-clean filter element, comprising a bag filter mechanism (2) for providing filtration and a sealing mechanism (1) for providing a filtration environment, wherein the bag filter mechanism (2) is installed inside the sealing mechanism (1), characterized in that: It also includes a jetting mechanism (3) for backwashing the bag filter mechanism (2) and an auxiliary cleaning mechanism (4) for improving the cleaning effect of the jetting mechanism (3). The jetting mechanism (3) is installed at the upper outlet position of the bag filter mechanism (2), and the auxiliary cleaning mechanism (4) is installed inside the bag filter mechanism (2) near the jetting mechanism (3). The bag filter mechanism (2) includes a top fixing frame (21), a bag fixing ring (22) is connected to the bottom of the top fixing frame (21), a filter bag (23) is fixedly connected to the bottom of the bag fixing ring (22), a number of inner support rods (25) are installed in a circular array on the inner side of the bag fixing ring (22), a bottom fixing ring (24) is connected to the bottom of the inner support rods (25), and a central support ring (26) is evenly arrayed from top to bottom on the inner support rods (25); The auxiliary cleaning mechanism (4) includes a central force-bearing block (41). Several support rods (42) are arranged in a circular array on the outer side of the center position of the central force-bearing block (41). The support rods (42) are connected to the inner support rods (25) through the connecting rings (43). The inner support rods (25) are engaged with the connecting rings (43). The central force-bearing block (41) includes a top dispersion cone (411), a central frame (412), and a bottom dispersion cone (413). The central frame (412) is located in the middle and is cylindrical. The central force-bearing block (41) and the connecting rings (43) are symmetrically installed at the upper and lower ends of the central frame (412).

2. The waste gas treatment device with an easy-to-clean filter element according to claim 1, characterized in that: Both the top dispersing cone (411) and the bottom dispersing cone (413) are formed with several spiral grooves, and the spiral directions are opposite.

3. The waste gas treatment device with an easy-to-clean filter element according to claim 2, characterized in that: The support rod (42) is made of steel wire.

4. The waste gas treatment device with an easy-to-clean filter element according to claim 3, characterized in that: The top fixing frame (21) has a trumpet-shaped cross-section, and the top of the top fixing frame (21) is a large opening, while the corresponding position of the central force block (41) is a small opening. The horizontal plane of the central force block (41) and the position of the small opening of the top fixing frame (21) overlap horizontally.

5. The waste gas treatment device with an easy-to-clean filter element according to claim 4, characterized in that: The top of the inner support rod (25) is fixed to the top fixing frame (21), the bottom of the inner support rod (25) is fixed to the bottom fixing ring (24), and the center support ring (26) is engaged with the inner support rod (25).

6. The waste gas treatment device with an easy-to-clean filter element according to claim 5, characterized in that: The jetting mechanism (3) includes an air storage pipe (31), an air pipe (32), and a pulse nozzle (33). The pulse nozzle (33) is located at the outlet position of the top fixing frame (21). The top of the pulse nozzle (33) is connected to the air pipe (32) by a thread. The air supply end of the air pipe (32) is connected to the air storage pipe (31).

7. The waste gas treatment device with an easy-to-clean filter element according to claim 6, characterized in that: The sealing mechanism (1) includes a sealing cover (11), a filter box (12), a dust collection funnel (13), and a waste discharge valve (14). The top of the filter box (12) and the sealing cover (11) are separated by a partition. The position of the partition is flush with the position of the top fixing frame (21). The dust collection funnel (13) is installed at the bottom of the sealing cover (11) through a flange. The waste discharge valve (14) is installed at the bottom of the dust collection funnel (13) through a flange.

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