Stainless steel dust removal filter device

Abstract

This utility model discloses a stainless steel dust removal and filtration device, including a filter box. A first filter box is connected to the left side of the filter box, and a conveying pipe is connected to the left side of the first filter box. This utility model uses the filter box, the first filter box, and the second filter box to form a complete filtration path. A stainless steel wire mesh first performs preliminary filtration of the dust-laden gas, intercepting larger particles and preventing them from impacting subsequent filter media. A PTFE-coated stainless steel fiber filter bag utilizes its own properties to achieve fine filtration, further capturing medium-sized dust particles, while a silicon carbide ceramic membrane filter deeply purifies ultrafine dust. The synergistic effect of these three filtration layers significantly improves the overall filtration effect. A support plate provides stable support for the filter bags, the opening ensures uniform gas flow, and the dust collection hopper effectively collects the filtered dust, preventing secondary re-entrainment. The overall structure ensures more thorough filtration, meeting stringent purification requirements. This device has the advantage of excellent dust removal and filtration performance.

Description

Technical Field

[0001] This utility model relates to the field of dust removal and filtration technology, specifically a stainless steel dust removal and filtration device. Background Technology

[0002] During the production of molecular sieves, a large amount of dust is generated in the screening and calcination processes. Traditional dust removal devices have the following problems: Existing devices mostly use single-layer filter bags, which are difficult to effectively intercept ultrafine dust, resulting in substandard emissions and poor filtration. At the same time, molecular sieve dust is highly adhesive, and traditional filter materials (such as ordinary cloth bags) are prone to increased resistance due to dust adhesion after long-term use, requiring frequent manual cleaning and thus becoming inconvenient to use. Therefore, it is necessary to design and modify the stainless steel dust removal and filtration device to effectively prevent the phenomenon of poor filtration. Utility Model Content

[0003] To address the problems mentioned in the background section, the present invention aims to provide a stainless steel dust removal and filtration device with the advantage of good dust removal effect.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a stainless steel dust removal and filtration device, comprising a filter box, a first filter box connected to the left side of the filter box, a conveying pipe connected to the left side of the first filter box, a second filter box connected to the right side of the filter box, a stainless steel wire mesh slidably connected inside the first filter box, a silicon carbide ceramic membrane filter screen slidably connected inside the second filter box, a support plate fixedly connected to the inside of the filter box by bolts, a plurality of evenly distributed openings on the top of the support plate, PTFE-coated stainless steel fiber filter bags fixedly connected to the inside of the openings by bolts, and a dust collection hopper connected to the bottom of the filter box.

[0005] As a preferred embodiment of this invention, a spiral cooling pipe is fixedly connected to the surface of the conveying pipe.

[0006] As a preferred embodiment of this utility model, the bottoms of both the first filter box and the second filter box are connected to a collection box. A drawer is slidably connected to the bottom of the inner wall of the collection box. The front of the drawer extends to the front of the collection box and is fixedly connected to a handle. The surface of the handle is provided with anti-slip textures, and the number of anti-slip textures is several.

[0007] As a preferred embodiment of this utility model, a sealing cover is fixedly connected to the front of the filter box by bolts, and the back of the sealing cover is in contact with the front of the support plate.

[0008] As a preferred embodiment of this invention, the bottom of the dust collection hopper is connected to a discharge valve.

[0009] As a preferred embodiment of this utility model, a support frame is fixedly connected to the bottom of the filter box, and lifting rings are fixedly connected to all four sides of the top of the filter box. A backflushing dust removal system is provided on the top of the inner wall of the filter box.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] 1. This utility model employs a filter box, a first filter box, and a second filter box to form a complete filtration path. A stainless steel wire mesh first performs preliminary filtration of the dust-laden gas, intercepting larger particles and preventing them from impacting subsequent filter media. A PTFE-coated stainless steel fiber filter bag utilizes its own properties to achieve fine filtration, further capturing medium-sized dust particles. The silicon carbide ceramic membrane filter then deeply purifies ultrafine dust. The synergistic effect of these three filtration layers significantly improves the overall filtration efficiency. A support plate provides stable support for the filter bags, the opening ensures uniform gas flow, and the dust collection hopper effectively collects the filtered dust, preventing secondary re-entrainment. The overall structure ensures more thorough filtration, meeting stringent purification requirements. This device boasts excellent dust removal and filtration performance.

[0012] 2. This invention effectively cools the high-temperature, dust-laden gas entering the device via a spiral cooling pipe on the surface of the conveying pipe. Directly introducing high-temperature gas into the filter box may affect the filter media's performance and shorten its lifespan. The spiral cooling pipe lowers the gas temperature through heat exchange, keeping the gas within the filter media's suitable operating temperature range, thus protecting the filter media and maintaining its stable filtration efficiency. Simultaneously, the cooled gas state is more conducive to dust interception, indirectly improving the filtration effect and enhancing the device's adaptability to high-temperature conditions. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the support plate and PTFE-coated stainless steel fiber filter bag structure of this utility model;

[0015] Figure 3 This is a front sectional view of the first filter box structure of this utility model;

[0016] Figure 4 This utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0017] In the diagram: 1. Filter box; 2. First filter box; 3. Second filter box; 4. Stainless steel wire mesh; 5. Silicon carbide ceramic membrane filter; 6. Support plate; 7. PTFE-coated stainless steel fiber filter bag; 8. Dust collection hopper; 9. Discharge valve; 10. Conveying pipe; 11. Spiral cooling pipe; 12. Support frame; 13. Collection box; 14. Drawer; 15. Backflushing cleaning system. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] like Figures 1 to 4 As shown in the figure, a stainless steel dust removal and filtration device includes a filter box 1. A first filter box 2 is connected to the left side of the filter box 1, and a conveying pipe 10 is connected to the left side of the first filter box 2. A second filter box 3 is connected to the right side of the filter box 1. A stainless steel wire mesh 4 is slidably connected inside the first filter box 2, and a silicon carbide ceramic membrane filter 5 is slidably connected inside the second filter box 3. A support plate 6 is bolted to the inside of the filter box 1. Multiple evenly distributed openings are provided on the top of the support plate 6, and PTFE-coated stainless steel fiber filter bags 7 are bolted to the inside of each opening. A dust collection hopper 8 is connected to the bottom of the filter box 1. The stainless steel wire mesh 4 and the silicon carbide ceramic membrane filter 5 slide up and down inside the first filter box 2 and the second filter box 3, respectively. The backwash cleaning system 15 includes a pulse valve assembly, a pressure sensor, and a PLC. The control cabinet and remote monitoring terminal, etc., use pressure sensors to monitor equipment operating parameters in real time, such as filter bag resistance and differential pressure, and transmit the data to the PLC control cabinet. The PLC control cabinet analyzes the data according to preset thresholds and algorithms. When the parameters reach the set value, it automatically controls the pulse valve group to start, such as pulse backflushing cleaning. At the same time, the PLC synchronizes the equipment status data to the remote monitoring terminal, allowing users to view the operating status in real time, receive fault alarms, and remotely intervene in the operation. The aforementioned backflushing cleaning system 15 is a common existing technology and common knowledge in the field of baghouse dust collection, so it will not be described in detail in this application. The silicon carbide ceramic membrane filter 5 is a ceramic membrane filter element with a porous structure, which is made of silicon carbide as the core material and prepared through a specific process. The PTFE-coated stainless steel fiber filter bag 7 is a composite filter element that combines a stainless steel fiber skeleton and a polytetrafluoroethylene membrane. It is mainly used for fine filtration of medium-sized dust in industrial dust collection systems. Its core design achieves a balance of high-efficiency filtration, anti-adhesion, and long service life through the synergistic optimization of materials and structure.

[0020] refer to Figure 1 A spiral cooling pipe 11 is fixedly connected to the surface of the conveying pipe 10.

[0021] As a technical optimization of this utility model, the spiral cooling pipe 11 on the surface of the conveying pipe 10 can effectively cool the high-temperature dust-laden gas entering the device. If the high-temperature gas directly enters the filter box 1, it may affect the performance of the filter material and shorten its service life. The spiral cooling pipe 11 reduces the gas temperature through heat exchange, keeping the gas within the suitable operating temperature range of the filter material, thereby protecting the filter material and maintaining its stable filtration efficiency. At the same time, the cooled gas state is more conducive to dust interception, indirectly improving the filtration effect and enhancing the device's adaptability to high-temperature conditions. In actual use, low-temperature water can be introduced into the spiral cooling pipe 11 to cool the air flowing through the conveying pipe 10.

[0022] refer to Figure 3 The bottom of the first filter box 2 and the second filter box 3 are both connected to the collection box 13. The bottom of the inner wall of the collection box 13 is slidably connected to the drawer 14. The front of the drawer 14 extends to the front of the collection box 13 and is fixedly connected to the handle. The surface of the handle is provided with anti-slip texture, and the number of anti-slip textures is several.

[0023] As a technical optimization of this utility model, the dust separated during the filtration process can be temporarily stored in the collection box 13 at the bottom of the first filter box 2 and the second filter box 3. The drawer-type design 14 simplifies dust cleaning. Simply pull out the drawer 14 to easily remove the collected dust without complicated operations. This structure reduces dust scattering during cleaning, avoids pollution to the surrounding environment, reduces the labor intensity of manual cleaning, minimizes interference with device operation caused by frequent cleaning, and ensures the continuity and stability of the filtration process. The stainless steel wire mesh 4 and the silicon carbide ceramic membrane filter 5 are sealed to the first filter box 2 and the second filter box 3 respectively by sealing strips. The drawer 14 is also sealed to the collection box by a sealing strip (not shown). The sealing strip is a common existing technology and will not be described in detail in this application.

[0024] refer to Figure 1 A sealing cover is fixed to the front of the filter box 1 by bolts, and the back of the sealing cover is in contact with the front of the support plate 6.

[0025] As a technical optimization of this utility model, the sealing cover plate on the front of the filter box 1 is fixed with bolts, which can effectively ensure the sealing performance of the filter box 1, prevent dust-laden gas from leaking from the gaps during the filtration process, ensure that all gas is treated by the filter material before being discharged, and improve the thoroughness of filtration. When it is necessary to inspect, replace or maintain the filter material inside the filter box 1, the sealing cover plate can be opened by removing the bolts. The operation is convenient, shortens the maintenance time, reduces the maintenance difficulty, and ensures that the device can maintain a good filtration state for a long time.

[0026] refer to Figure 1The bottom of the dust collection hopper 8 is connected to a discharge valve 9.

[0027] As a technical optimization of this utility model, the discharge valve 9 at the bottom of the dust collection hopper 8 can effectively control the dust discharge process. The filtered dust accumulates in the dust collection hopper 8, and the discharge valve 9 can discharge the dust in an orderly manner, preventing excessive accumulation of dust in the dust collection hopper 8 and affecting the normal operation of the filter box 1. When the discharge valve 9 is closed, it ensures the sealing of the dust collection hopper 8, preventing unfiltered gas from leaking from the bottom. When open, it allows for smooth discharge of dust, facilitating subsequent centralized treatment or recycling of the dust, thus enhancing the flexibility and environmental friendliness of the device operation.

[0028] refer to Figure 1 The bottom of the filter box 1 is fixedly connected to a support frame 12, and the top of the filter box 1 is fixedly connected to a lifting ring around the perimeter. The top of the inner wall of the filter box 1 is equipped with a backwash cleaning system 15.

[0029] As a technical optimization of this utility model, the support frame 12 at the bottom of the filter box 1 provides stable support for the entire device, ensuring the smooth operation of the filtration process. The lifting ring at the top facilitates the transportation and installation of the device, especially in large areas or when the device needs to be moved, allowing for easy operation and saving manpower and time. The backwash cleaning system 15 can promptly clean the dust adhering to the surface of the filter media, maintain the filtration performance of the filter media, reduce the frequency of manual cleaning, extend the service life of the filter media, and improve the overall operating efficiency of the device.

[0030] The working principle and usage process of this utility model are as follows: During use, dust-laden gas first enters the device through the conveying pipe 10. The spiral cooling pipe 11 on the surface of the conveying pipe 10 pre-cools the gas to prevent high-temperature gas from affecting the performance of subsequent filter materials. The cooled gas enters the first filter box 2, where the internal stainless steel wire mesh 4 performs preliminary filtration, intercepting larger particles of impurities. These impurities fall into the drawer 14 of the lower collection box 13 under gravity. The pre-filtered gas then enters the filter chamber 1 and is evenly distributed to each PTFE-coated stainless steel fiber filter bag 7 through the openings on the support plate 6. The filter bags, utilizing their own characteristics, perform fine filtration of medium-sized dust particles in the gas. The dust is intercepted on the surface of the filter bags. Some dust falls directly into the dust collection hopper 8 under gravity, while some is periodically cleaned by the backflushing cleaning system 15 at the top of the inner wall of the filter chamber 1, ensuring that the filter bags always maintain good air permeability. The finely filtered gas flows above the support plate 6 and then continues to the second filter box 3. Inside, the silicon carbide ceramic membrane filter 5 deeply filters the ultrafine dust in the gas, further improving the gas cleanliness. The filtered ultrafine dust also falls into the drawer 14 of the collection box 13 below. Finally, the clean gas that has undergone three stages of filtration is discharged from the device from the second filter box 3.

[0031] When it is necessary to replace the stainless steel wire mesh 4 and the silicon carbide ceramic membrane filter 5, the operator pulls out the stainless steel wire mesh 4 and the silicon carbide ceramic membrane filter 5 upwards, and then inserts the new stainless steel wire mesh 4 and the silicon carbide ceramic membrane filter 5 from top to bottom. The composite dust removal technology combined with the smooth surface of the PTFE-coated stainless steel fiber filter bag 7 greatly improves the dust removal rate. The stainless steel wire mesh 4, the silicon carbide ceramic membrane filter 5 and the PTFE-coated stainless steel fiber filter bag 7 are all existing common technologies and are common knowledge to those skilled in the art. This application will not describe them in detail.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dust filter device for stainless steel comprising a filter box (1), characterized in that: The filter box (1) is connected to a first filter box (2) on the left side, and a conveying pipe (10) is connected to the left side of the first filter box (2). The filter box (1) is connected to a second filter box (3) on the right side. A stainless steel wire mesh (4) is slidably connected inside the first filter box (2). A silicon carbide ceramic membrane filter (5) is slidably connected inside the second filter box (3). A support plate (6) is fixedly connected inside the filter box (1) by bolts. A plurality of evenly distributed openings are provided on the top of the support plate (6). A PTFE-coated stainless steel fiber filter bag (7) is fixedly connected inside the openings by bolts. A dust collection hopper (8) is connected to the bottom of the filter box (1).

2. The stainless steel dust removal and filtration device according to claim 1, characterized in that: A spiral cooling pipe (11) is fixedly connected to the surface of the conveying pipe (10).

3. The stainless steel dust removal and filtration device according to claim 1, characterized in that: The bottom of the first filter box (2) and the second filter box (3) are connected to a collection box (13). The bottom of the inner wall of the collection box (13) is slidably connected to a drawer (14). The front of the drawer (14) extends to the front of the collection box (13) and is fixedly connected to a handle. The surface of the handle is provided with anti-slip texture, and the number of anti-slip textures is several.

4. The stainless steel dust removal and filtration device according to claim 1, characterized in that: The front of the filter box (1) is fixedly connected to a sealing cover plate by bolts, and the back of the sealing cover plate is in contact with the front of the support plate (6).

5. A stainless steel dust removal and filtration device according to claim 1, characterized in that: The bottom of the dust collection hopper (8) is connected to a discharge valve (9).

6. The stainless steel dust removal and filtration device according to claim 1, characterized in that: The bottom of the filter box (1) is fixedly connected to a support frame (12), and the top of the filter box (1) is fixedly connected to a lifting ring around the perimeter. The top of the inner wall of the filter box (1) is provided with a backwash cleaning system (15).

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