High-temperature metal filter bag with anti-blocking function

Abstract

The invention discloses a high-temperature metal filter bag with an anti-blocking function, belongs to the technical field of filter equipment, solves the problems of complex structure and easy blockage in the prior art, and comprises a pair of flange seats, the tops of the flange seats are provided with flashes, the inner walls of the flange seats are provided with mounting rings, and a first filter part is arranged between the pair of mounting rings. The ends of the first filtering pieces are inserted into the inner sides of the flange bases, the outer sides of the pair of flange bases are each sleeved with a sleeve, flanges extending inwards are arranged at the bottoms of the sleeves, the distance between the pair of sleeves is smaller than that between the pair of flange bases, the tops of the sleeves can be attached to the flanges, and the flanges can be attached to the bottoms of the flange bases. The flange extends to the inner side of the flange seat; a second filtering piece is arranged between the two flanges, and the first filtering piece is arranged on the outer side of the second filtering piece in a sleeving mode. The technical effects of effective filtration, blockage prevention and convenience in maintenance are achieved.

Description

Technical Field

[0001] The present application relates to the field of filtering equipment, and in particular to a high-temperature metal filter bag with an anti-blocking function. Background Art

[0002] As a durable filter medium, metal filter bags play a vital role in industrial filtration. Made from corrosion-resistant metals like stainless steel and titanium alloy, they exhibit exceptional durability. Currently, amidst the booming development of numerous industries, including chemical, pharmaceutical, food processing, and environmental treatment, metal filter bags are widely used. They efficiently separate solid particles from liquids or gases, significantly improving product quality and production efficiency, and driving these industries towards more environmentally friendly and efficient development.

[0003] Currently, the industry employs a variety of methods to address the problem of metal filter bag clogging. Some employ mechanical vibration, using a vibrating device to vibrate the filter bag, shaking off dust clinging to its surface. Others employ pulse backflushing, periodically injecting high-pressure gas into the bag, creating a reverse airflow to dislodge dust. These methods can alleviate the problem of filter bag clogging to a certain extent and are widely used in production.

[0004] However, these conventional methods have significant drawbacks. For example, the high-temperature metal filter bag with an anti-clogging structure disclosed in Chinese patent publication No. CN217247470U, while effective, is overly complex, making installation and removal cumbersome. Furthermore, when dust accumulates on the filter bag, the components can easily become stuck, effectively failing to resolve the clogging issue and potentially exacerbating it. Summary of the Invention

[0005] In order to overcome the problems of complex structure and easy clogging in the prior art, the present application provides a high-temperature metal filter bag with anti-clogging function.

[0006] The present application is implemented by the following technical solution: a high-temperature metal filter bag with an anti-blocking function, comprising a pair of flange seats, the top of the flange seat is provided with a burr, the inner wall of the flange seat is provided with a mounting ring, a first filter element is provided between the pair of mounting rings, the end of the first filter element is inserted into the inner side of the flange seat, the outer side of the pair of flange seats is respectively provided with a sleeve, the bottom of the sleeve is provided with a flange extending inward, the distance between the pair of sleeves is smaller than the distance between the pair of flange seats, the top of the sleeve can be fitted with the burr, the flange can be fitted with the bottom of the flange seat, and the flange extends to the inner side of the flange seat; A second filter element is provided between the two flanges. The first filter element is sleeved on the outside of the second filter element. There is a gap between the first filter element and the second filter element.

[0007] Optionally, the first filter element is welded to the mounting ring, a slot is provided on the side of the flange facing the bottom of the sleeve, and the second filter element is inserted into the slot and forms an interference fit with the slot.

[0008] Optionally, the first filter element and the second filter element are both tubular, the first filter element is provided with a plurality of first filter holes, and the second filter element is provided with a plurality of second filter holes.

[0009] Optionally, the sleeve is rotatable around the flange seat; When in working state, the interconnected area between the plurality of first filter holes and the plurality of second filter holes is the largest; When in the maintenance state, the interconnected areas between the first filter holes and the second filter holes are minimized.

[0010] Optionally, a lifting rod is provided on the inner side of the flange seat located above, and the lifting rod is used to lift the flange seat upwards; A rotating paddle is provided on the outer wall of the sleeve located at the top, and the rotating paddle is used to drive the sleeve to rotate.

[0011] Optionally, a plurality of scraping strips are provided on the outer wall of the second filter element, and the scraping strips are arranged at intervals along the circumferential direction, one side of the scraping strip is connected to the outer wall of the second filter element, and the other side of the scraping strip is in contact with the inner wall of the first filter element.

[0012] Optionally, a limiting ring is provided on the outer side of the bottom of the flange seat, and the limiting ring is located below the plurality of rotating paddles. A plurality of connecting rods are provided between the limiting ring and the burr, and the distance between the connecting rod and the sleeve is less than the thickness of the rotating paddle.

[0013] Compared with the existing technology, this application has the following beneficial effects: 1. Double filtration is achieved by setting the first filter element and the second filter element at intervals, which improves the filtration efficiency and effect and reduces the possibility of clogging.

[0014] 2. The sleeve is rotatable on the outside of the flange seat. On the one hand, it realizes the adjustment of the communication area between the first filter hole and the second filter hole. On the other hand, through the mutual rotation of the first filter element and the second filter element, dust and other debris adhering to the first filter element and the second filter element can be reliably removed, which facilitates work and maintenance and reduces the risk of clogging. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of this application; Figure 2 It is the reference diagram of the explosion state of this application; Figure 3 is a cross-sectional view of the internal structure of the flange and the first filter element; Figure 4 is a cross-sectional view of the inner wall structure of the sleeve and the second filter element; Figure 5 is a reference diagram showing the positions of the first filter element and the second filter element in a maintenance state; Figure 6 This is a reference diagram of the positions of the second filter element and the third filter element in the working state; In the figure: 1. Flange seat; 11. Flash; 12. Mounting ring; 13. Lifting rod; 14. Limiting ring; 15. Connecting rod; 2. First filter element; 20. First filter hole; 3. Sleeve; 31. Flange; 310. Slot; 32. Rotating paddle; 4. Second filter element; 41. Second filter hole; 42. Scraper. DETAILED DESCRIPTION

[0016] Below, the present application is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0017] like Figure 1-6 As shown, a high-temperature metal filter bag with anti-blocking function includes a pair of flange seats 1, a sleeve 3, a first filter element 2 and a second filter element 4, wherein the pair of flange seats 1 are used to support and install the first filter element 2, the sleeve 3 is sleeved on the outside of the flange seat 1 and can rotate around it, the first filter element 2 is sleeved on the outside of the second filter element 4 and there is a gap between the two, so that the entire filter bag has a double filtering effect, and the filtering state can be adjusted by rotating the sleeve 3, effectively preventing the filter bag from being blocked.

[0018] Specifically, the top of the flange seat 1 is provided with a burr 11, and a mounting ring 12 is formed on the inner wall of the flange seat 1. The burr 11 serves as a positioning and sealing function. When the sleeve 3 is inserted into the flange seat 1, the top of the sleeve 3 can fit against the burr 11. The mounting ring 12 is used to mount the first filter element 2. The end of the first filter element 2 is inserted into the inner side of the flange seat 1 and welded to the mounting ring 12. This welding method ensures a stable connection between the first filter element 2 and the flange seat 1. Other reliable connection methods, such as snap-fit ​​or bolted connections, can also be used.

[0019] The bottom of the sleeve 3 is provided with a flange 31 extending inward. The flange 31 can fit with the bottom of the flange seat 1 and extend to the inner side of the flange seat 1. A slot 310 is provided on the side of the flange 31 facing the bottom of the sleeve 3. The second filter element 4 is inserted into the slot 310 and has an interference fit with the slot 310. This interference fit ensures that the second filter element 4 is firmly installed and not easy to loosen. At the same time, the interference fit also facilitates the replacement and maintenance of the second filter element 4. The sleeve 3 can rotate around the flange seat 1. A rotating paddle 32 is provided on the outer wall of the sleeve 3 located above. The rotating paddle 32 is used to rotate the sleeve 3. The operator can rotate the sleeve 3 by operating the rotating paddle 32, thereby adjusting the connection area between the first filter hole 20 and the second filter hole 41.

[0020] Both the first filter element 2 and the second filter element 4 are tubular in shape. The first filter element 2 is provided with a plurality of first filter holes 20, and the second filter element 4 is provided with a plurality of second filter holes 41. When in operation, the interconnected area between the first filter holes 20 and the second filter holes 41 is maximized, allowing fluid to pass smoothly through the first and second filter elements 2 and 4, improving filtration efficiency. When in maintenance mode, the interconnected area between the first filter holes 20 and the second filter holes 41 is minimized, reducing the ingress of dust and other impurities into the interiors of the first and second filter elements 2 and 4. Furthermore, when the first and second filter elements 2 and 4 rotate, they rub against each other, facilitating cleaning and maintenance of the filter bags. The outer wall of the second filter element 4 is provided with a plurality of scraping strips 42, spaced apart along the circumference. One side of the scraping strips 42 is connected to the outer wall of the second filter element 4, and the other side is in contact with the inner wall of the first filter element 2. During the rotation of the sleeve 3, the scraping strips 42 can scrape off the dust attached to the inner wall of the first filter element 2, further preventing the filter bag from being blocked.

[0021] A limiting ring 14 is provided on the outer side of the bottom of the flange seat 1. The limiting ring 14 is located below the rotating paddle 32. A number of connecting rods 15 are provided between the limiting ring 14 and the burr 11. The distance between the connecting rods 15 and the sleeve 3 is less than the thickness of the rotating paddle 32. This can limit the rotation of the sleeve 3 for control, that is, the sleeve 3 can only rotate back and forth and cannot rotate continuously in the same direction. The repeated rotation of the sleeve 3 can significantly improve the scrubbing effect between the first filter element 2 and the second filter element 4. Furthermore, since the limiting ring 14 is located below the rotating paddle 32, the sleeve 3 has a certain amount of axial movement, that is, the sleeve 3 can move back and forth up and down in a short distance and rotate repeatedly in the circumferential direction in a short distance, thereby maximizing the effect of removing debris between the first filter element 2 and the second filter element 4.

[0022] The working principle of this embodiment is as follows: the overlapping structure of the first filter element 2 and the second filter element 4 greatly improves the filtering effect and anti-clogging ability. The rotatable design of the sleeve 3 allows the filter bag to be flexibly switched between operating and maintenance modes, and enables the first filter element 2 and the second filter element 4 to be scrubbed and washed together, facilitating daily use and maintenance. The provision of the scraper 42 further enhances the anti-clogging effect and reduces the risk of filter bag clogging.

[0023] The above-mentioned embodiments are only preferred embodiments of the present application and cannot be used to limit the scope of protection of the present application. Any non-substantial changes and replacements made by technicians in this field based on the present application shall fall within the scope of protection required by the present application.

Claims

1. A high-temperature metal filter bag with an anti-blocking function, comprising a pair of flange seats (1), wherein the top of the flange seat (1) is provided with a burr (11), the inner wall of the flange seat (1) is provided with a mounting ring (12), a first filter element (2) is provided between the pair of mounting rings (12), and the end of the first filter element (2) is inserted into the inner side of the flange seat (1), characterized in that: A sleeve (3) is sleeved on the outer side of each of the pair of flange seats (1), and a flange (31) extending inward is provided at the bottom of the sleeve (3). The distance between the pair of sleeves (3) is smaller than the distance between the pair of flange seats (1). The top of the sleeve (3) can be fitted with the burr (11), and the flange (31) can be fitted with the bottom of the flange seat (1), and the flange (31) extends to the inner side of the flange seat (1). A second filter element (4) is provided between the two flanges (31), the first filter element (2) is sleeved on the outside of the second filter element (4), and a gap exists between the first filter element (2) and the second filter element (4).

2. A high-temperature metal filter bag with anti-blocking function according to claim 1, characterized in that: The first filter element (2) is welded to the mounting ring (12); a slot (310) is provided on one side of the flange (31) facing the bottom of the sleeve (3); the second filter element (4) is inserted into the slot (310) and forms an interference fit with the slot (310).

3. The high-temperature metal filter bag with anti-blocking function according to claim 1, characterized in that: The first filter element (2) and the second filter element (4) are both tubular; the first filter element (2) is provided with a plurality of first filter holes (20); and the second filter element (4) is provided with a plurality of second filter holes (41).

4. The high-temperature metal filter bag with anti-blocking function according to claim 3 is characterized in that: The sleeve (3) can rotate around the flange seat (1); When in working state, the interconnected area between the plurality of first filter holes (20) and the plurality of second filter holes (41) is the largest; When in the maintenance state, the interconnected areas between the plurality of first filter holes (20) and the plurality of second filter holes (41) are minimal.

5. The high-temperature metal filter bag with anti-blocking function according to claim 4, characterized in that: A lifting rod (13) is provided on the inner side of the flange seat (1) located at the top, and the lifting rod (13) is used to lift the flange seat (1) upwards; A rotating paddle (32) is provided on the outer wall of the sleeve (3) located above, and the rotating paddle (32) is used to drive the sleeve (3) to rotate.

6. The high-temperature metal filter bag with anti-blocking function according to claim 4, characterized in that: A plurality of scraping strips (42) are provided on the outer wall of the second filter element (4), and the plurality of scraping strips (42) are arranged at intervals along the circumferential direction, one side of the scraping strips (42) is connected to the outer wall of the second filter element (4), and the other side of the scraping strips (42) is in contact with the inner wall of the first filter element (2).

7. The high-temperature metal filter bag with anti-blocking function according to claim 5, characterized in that: A limiting ring (14) is provided on the outer side of the bottom of the flange seat (1), and the limiting ring (14) is located below the plurality of rotating paddles (32). A plurality of connecting rods (15) are provided between the limiting ring (14) and the burr (11), and the distance between the connecting rods (15) and the sleeve (3) is less than the thickness of the rotating paddles (32).

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