Ultra-clean filter cartridge dust removal device

Abstract

The utility model belongs to the technical field of dust removal, and particularly relates to an ultra-clean filter cartridge dust removal device which is erected on a stand column and comprises a first shell, a second shell and a filter cartridge, the second shell is positioned below the first shell; a plurality of filter cartridges are arranged in the second shell, and differential pressure sensors are arranged on the filter cartridges; the tops of the filter cartridges are jointly connected with a blowing pipe, and the blowing pipe is connected with a compressed air storage tank; a pulse valve is arranged on a connecting pipeline of the compressed air storage tank and the blowing pipe; the third shell is located below the second shell, a dust-containing air inlet is formed in the side face of the third shell, and an airflow distribution device is arranged in the third shell; the fourth shell is located below the third shell, and an ash discharging valve is arranged at the bottom of the fourth shell. The utility model solves the problems of blockage, high energy consumption, frequent maintenance and the like in the traditional dust removal technology, and has a better market application prospect.

Description

Technical Field

[0001] This utility model belongs to the field of dust removal technology, specifically relating to an ultra-clean filter cartridge dust removal device. Background Technology

[0002] Dust removal refers to the technical measures taken to remove particulate matter from dust-laden gases in order to reduce their emissions into the atmosphere. In recent years, with rapid economic development, industrial emissions have caused great harm to the surrounding environment, making the technology for removing particulate matter from dust-laden gases increasingly important.

[0003] Traditional dust removal technologies suffer from problems such as clogging due to deep filtration, high energy consumption for cleaning, inability to handle ultrafine particles, and the need for frequent filter media replacement. To address these issues, this application provides an ultra-clean cartridge dust collector that utilizes ultra-clean cartridge dust removal technology to overcome the shortcomings of traditional dust removal technologies.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide an ultra-clean filter cartridge dust removal device to solve some of the problems existing in the above-mentioned traditional dust removal technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An ultra-clean cartridge dust collector, mounted on a column, includes:

[0008] The first housing has an air outlet at its top;

[0009] The second housing is located below the first housing; the second housing contains multiple filter cartridges, each filter cartridge is equipped with a differential pressure sensor; the tops of the multiple filter cartridges are connected to a blowpipe, which is connected to a compressed air storage tank; a pulse valve is provided on the connecting pipe between the compressed air storage tank and the blowpipe.

[0010] The third housing is located below the second housing. It has a dust-laden air inlet on its side and an airflow distribution device inside.

[0011] The fourth housing is located below the third housing, and a ash discharge valve is provided at its bottom.

[0012] Preferably, the substrate layer of the filter cartridge is made of polyester fiber or polyimide nonwoven fabric, and a functional membrane is applied using a PTFE nano-coating, with the filter material pore size controllable between 0.1-3μm.

[0013] Preferably, the support frame of the filter cartridge is made of stainless steel spiral or perforated metal cylinder.

[0014] Preferably, the surface of the filter cartridge is designed with a wavy pleat pattern, with a pleat depth of 20-50mm.

[0015] Preferably, the airflow distribution device includes a guide plate and a flow equalization screen; the guide plate is a perforated plate or a V-shaped flow guide; the flow equalization screen pre-filters large particles >100μm.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) The ultra-clean filter cartridge dust removal device of this utility model has ultra-low emissions, with an outlet dust concentration of <10mg / m³, which is less than the national standard limit of 30mg / m³, and meets the ultra-clean emission requirements of industries such as steel and cement.

[0018] (2) The ultra-clean filter cartridge dust removal device of this utility model has low operating resistance, with an initial resistance of <800Pa and a resistance of <1000Pa after cleaning (the resistance of traditional bag dust removal after cleaning is >1500Pa), which reduces energy consumption by more than 40% compared with traditional bag dust removal.

[0019] (3) The ultra-clean filter cartridge dust removal device of this utility model has a filter cartridge life of 3 to 5 years (traditional filter bags 1 to 2 years), and supports offline compartment replacement, reducing downtime and reducing maintenance costs by 50% compared with traditional methods. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the ultra-clean filter cartridge dust removal device of this utility model;

[0021] Explanation of key figure labels:

[0022] 1. Air outlet; 2. Filter cartridge; 3. Pulse valve; 4. Blowpipe; 5. Modular housing; 6. Airflow distribution device; 7. Dust-laden air inlet; 8. Compressed air storage tank; 9. Column; 10. Ash discharge valve; 11. Differential pressure sensor. Detailed Implementation

[0023] The technical solution of this utility model patent will be clearly and completely described below. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on the utility model.

[0025] 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 a connection within 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.

[0026] See attached document Figure 1 A clean filter cartridge dust removal device, mounted on a column 9, includes:

[0027] The first housing has an air outlet 1 at its top;

[0028] The second housing is located below the first housing. Inside the second housing are multiple filter cartridges 2, each equipped with a differential pressure sensor 11 to monitor the pressure difference across the cartridge in real time (accuracy ±10Pa). The trigger threshold for dust removal is typically set to 1000~1200Pa. The tops of the multiple filter cartridges 2 are connected to a blowpipe 4, which in turn connects to a compressed air storage tank 8. A pulse valve 3 is installed on the connection between the compressed air storage tank 8 and the blowpipe 4. The pulse valve 3 has a response time of <0.1 seconds and, in conjunction with a venturi tube, converts 0.4~0.6MPa compressed air into a high-speed airflow, instantly stripping away dust. The pulse valve 3 supports both timed and differential pressure modes, automatically adjusting the electric field voltage or blowing frequency based on the inlet dust concentration. It can also use AI algorithms to optimize the blowing interval (e.g., "jump cleaning" only cleans high-resistance filter cartridges), saving 20%-30% of energy.

[0029] The third housing, located below the second housing, has a dust-laden air inlet 7 on its side and an airflow distribution device 6 inside. The airflow distribution device 6 includes a guide plate and a flow equalization screen. The guide plate is a perforated plate or a V-shaped guide to ensure that the dust-laden airflow passes evenly through the surface of the filter cartridge 2, avoiding local overload (flow velocity difference <15%). The flow equalization screen pre-filters large particles >100μm, protecting the filter cartridge 2 from mechanical damage.

[0030] The fourth housing is located below the third housing, and a ash discharge valve 10 is provided at its bottom.

[0031] Traditional filter bags are prone to hydrolysis and caking failure. In this embodiment, the substrate layer of the filter cartridge 2 is made of polyester fiber or polyimide nonwoven fabric, which provides mechanical strength, has a porosity of 80%~90%, and has the characteristics of high temperature resistance (polyimide filter cartridges can withstand 260℃), moisture resistance, and corrosion resistance (such as PTFE membrane resistance to acid and alkali gases).

[0032] Traditional dust removal technologies cannot handle ultrafine particles. This embodiment uses a nanofiber membrane filter cartridge (such as PTFE or polyester substrate + nano-coating) to prevent dust from embedding inside the filter material through surface filtration, ensuring thorough dust removal and stable resistance. The PTFE nano-coating has a thickness of 10~50μm and a pore size that can be precisely controlled to 0.1~0.5μm, achieving surface filtration with a removal efficiency of >99.9% for PM2.5 and ultrafine particles PM0.3 (such as silicon powder and metal fumes).

[0033] On the other hand, the support frame of filter cartridge 2 is made of stainless steel spiral or perforated metal cylinder to prevent filter cartridge 2 from collapsing and ensure airflow channel. The surface of filter cartridge 2 adopts a wave-shaped pleated design, increasing the filtration area by 30%~50%, with a pleat depth of 20-50mm. During dust removal, pulse valve 3 opens, and compressed air is instantly released and blown out through blowpipe 4. Combined with the pleated structure of filter cartridge 2, the dust layer on the surface of filter cartridge 2 is peeled off, avoiding blockage and maintaining long-term low-resistance operation. Compared with traditional dust removal technology, the pleated structure + pulse backflushing optimization scheme can reduce the amount of compressed air used and reduce dust removal energy consumption.

[0034] Traditional dust collection solutions require frequent filter media replacements, and traditional bag replacements necessitate 1-2 days of downtime. This embodiment, however, employs a long-life filter cartridge with a modular design, supporting offline compartment replacement and reducing downtime to less than 2 hours per replacement. The second housing, containing filter cartridge 2, uses a modular box 5 divided into multiple independent chambers. While one chamber is being cleaned offline, the others operate normally, enabling continuous operation. The modular box 5 utilizes rubber sealing rings and quick-release clamps to ensure airtight installation of filter cartridge 2, with a leakage rate of less than 0.5%.

[0035] In addition, the dust removal device can also integrate a pre-charge device, making the dust more easily adsorbed by the filter material after it is charged, which is especially suitable for ultrafine hydrophobic particles (such as carbon black); it can be remotely operated and maintained, and IoT sensors can monitor pressure difference, temperature and emission concentration in real time; it can simulate airflow through CFD to reduce airflow dead zones and system resistance <800Pa; it can use variable diameter ducts and a tapered inlet design to reduce local turbulence loss.

[0036] This utility model's ultra-clean filter cartridge dust removal device solves the pain points of traditional dust removal technologies, such as clogging, high energy consumption, and frequent maintenance, through nanoscale surface filtration, intelligent pulse cleaning, and modular design. It is especially suitable for high-precision, high-value dust control scenarios and has the core advantages of high efficiency (low emissions), energy saving (low resistance), and long life (low maintenance). It is very practical and has good market application prospects.

[0037] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. An ultra-clean filter cartridge dust extraction device mounted on a stand column, characterised in that, include: The first housing has an air outlet at its top; The second housing is located below the first housing; The second housing contains multiple filter cartridges, each equipped with a differential pressure sensor; the tops of the multiple filter cartridges are connected to a blowpipe, which is connected to a compressed air storage tank; a pulse valve is installed on the connecting pipe between the compressed air storage tank and the blowpipe. The third housing is located below the second housing. It has a dust-laden air inlet on its side and an airflow distribution device inside. The fourth housing is located below the third housing, and a ash discharge valve is provided at its bottom.

2. The ultra-clean filter cartridge dust extraction apparatus of claim 1, wherein, The substrate layer of the filter cartridge is made of polyester fiber or polyimide nonwoven fabric, and a functional membrane is applied using a PTFE nano-coating. The pore size of the filter material is 0.1-3μm.

3. The ultra-clean filter cartridge dust extraction apparatus of claim 1, wherein, The filter cartridge's support frame is made of stainless steel spiral or perforated metal cylinder.

4. The ultra-clean filter cartridge dust extraction apparatus of claim 1, wherein, The filter cartridge surface adopts a wavy pleated design with a pleat depth of 20-50mm.

5. The ultra-clean filter cartridge dust removal device according to claim 1, characterized in that, The airflow distribution device includes a guide plate and a flow equalization screen; the guide plate is a perforated plate or a V-shaped flow guide; the flow equalization screen pre-filters large particles >100μm.

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