Tail gas filtering device for furan ammonium salt production

Abstract

The utility model relates to the technical field of tail gas filtering, and particularly discloses a tail gas filtering device for furan ammonium salt production, which comprises a filtering box, a filter element is arranged in the filtering box, a dust collecting mechanism is arranged at the bottom of the filter element, the dust collecting mechanism comprises a base detachably connected with the bottom of the filter element, and dust collecting boxes are arranged on two sides of the base. The bottom of the dust collection box is of an inclined structure, a supporting plate for supporting the base is arranged at the bottom of the filter box, inclined sliding plates are connected to the two sides of the supporting plate, the dust collection box is tightly attached to the upper ends of the sliding plates, a core replacement opening is formed in the upper end of the filter box, and a cover plate for pressing the filter core is arranged at the upper end of the core replacement opening; through structural design and matching of the dust collection mechanism and the bottom of the filter box, the dust collection box can automatically collect impurities at the bottom of the filter box, comprehensiveness and thoroughness of collection are improved, the problem of limitation of impurity collection in the prior art is solved, the reuse service life of the cleaned filter element is prolonged, and the filtering effect of the cleaned filter element is improved.

Description

Technical Field

[0001] This utility model relates to the field of exhaust gas filtration technology, specifically to an exhaust gas filtration device for the production of furan ammonium salts. Background Technology

[0002] Furan ammonium salts are yellow crystals that should be stored in a dry, sealed container. They are also known as cis-furan ammonium salts, cefuroxime intermediates, and furan ammonium salts. In the pharmaceutical industry, furan ammonium salts serve as an intermediate for cefuroxime, aiding in the refining of cefuroxime active pharmaceutical ingredient (API) or formulations.

[0003] The production process of furan ammonium salts requires the filtration of waste gas. To address this, patent CN217613612U discloses a waste gas recovery and treatment device for furan ammonium salt production. This device collects impurities (solid particles) that fall from the filter screen surface during filtration, ensuring the normal operation of the recovery box. However, in actual use, solid particles in the recovery box and on the filter screen surface float within the box. Not all solid particles fall vertically along the filter screen surface. After the operation, a considerable amount of impurities remain at the bottom of the box, making them difficult to clean. During subsequent filtration, the blown-up solid particles clog the filter screen, affecting the filtration effect. Utility Model Content

[0004] This utility model addresses the aforementioned shortcomings of existing technologies by providing a tail gas filtration device for furan ammonium salt production. Through the design and coordination of the dust collection mechanism and the bottom structure of the filter box, the dust collection box automatically collects impurities from the bottom of the filter box, improving the comprehensiveness and thoroughness of collection. This solves the limitations of existing technologies in impurity collection and increases the lifespan and filtration effect of the filter element after cleaning.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A tail gas filtration device for furan ammonium salt production includes a filter box containing a filter element. A dust collection mechanism is located at the bottom of the filter element. The dust collection mechanism includes a base detachably connected to the bottom of the filter element. Dust collection boxes are located on both sides of the base, with the bottom of the dust collection boxes having an inclined structure. A support plate supporting the base is located at the bottom of the filter box. Inclined sliding plates are connected to both sides of the support plate. The dust collection boxes are tightly attached to the upper end of the sliding plates. A filter element replacement port is located at the upper end of the filter box, and a cover plate that presses down on the filter element is located at the upper end of the filter element replacement port.

[0007] Preferably, the bottom of the filter box is provided with a support plate.

[0008] Preferably, the two ends of the filter box are funnel structures.

[0009] Preferably, the filter element has slots on both sides, and the upper end of the base has a locking strip that engages with the slots.

[0010] Preferably, the inner wall of the filter box is provided with guide strips, the two ends of the base are provided with relief grooves that cooperate with the guide strips, and the two ends of the filter element are provided with guide grooves that cooperate with the guide strips.

[0011] Preferably, the bottom of the cover plate is provided with a first sealing strip that cooperates with the filter box, the cover plate is connected to the filter box by bolts, and the upper end of the filter element is provided with a second sealing strip that cooperates with the cover plate.

[0012] Preferably, the number of filter elements is two.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model achieves automatic collection of impurities at the bottom of the filter box by designing and coordinating the dust collection mechanism with the bottom structure of the filter box. This improves the comprehensiveness and thoroughness of the collection, solves the limitations of existing technologies in impurity collection, and increases the lifespan and filtration effect of the filter element after cleaning.

[0015] 2. This utility model increases the sealing between the filter box and the filter element by using guide strips, and can also fix the filter element, thereby improving the stability and reliability of the filter element during use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of this utility model after the cover plate has been removed;

[0018] Figure 3 This is a cross-sectional view of the present invention;

[0019] Figure 4 This is a schematic diagram of the bottom structure of the cover plate;

[0020] Figure 5 This is a schematic diagram of the filter element structure;

[0021] Figure 6 This is a schematic diagram of the dust collection mechanism;

[0022] In the diagram: 1-Filter box; 101-Support plate; 102-Filter element replacement port; 103-Guide strip; 104-Panel; 105-Slide plate; 2-Cover plate; 201-Bolt; 202-Sealing ring; 203-First sealing strip; 3-Filter element; 301-Second sealing strip; 302-Guide groove; 303-Card slot; 4-Dust collection mechanism; 401-Dust collection box; 402-Base; 403-Leaning groove; 404-Card strip. Detailed Implementation

[0023] 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.

[0024] like Figure 1 As shown, a tail gas filtration device for furan ammonium salt production includes a filter box 1, with an inlet and an outlet at each end of the filter box 1, as shown. Figure 3 As shown, the filter box 1 is equipped with two filter elements 3, and a dust collection mechanism 4 is provided at the bottom of the filter element 3.

[0025] like Figure 6 As shown, the dust collection mechanism 4 includes a base 402 detachably connected to the bottom of the filter element 3. Dust collection boxes 401 are provided on both sides of the base 402. The bottom of the dust collection boxes 401 has an inclined structure. A horizontal support plate 104 supporting the base 402 is provided at the bottom of the filter box 1. Inclined sliding plates 105 are connected to both sides of the support plate 104. The dust collection box 401 is tightly attached to the upper end of the sliding plate 105. The upper end of the dust collection box 401 is horizontal, and the inclination angle of the sliding plate 105 is not less than 45°, allowing solid particles to slide into the dust collection box 401, thereby collecting impurities at the bottom of the filter box 1 and improving the thoroughness of cleaning. Figure 2 As shown, the upper end of the filter box 1 is provided with a filter element replacement port 102. The width of the filter element replacement port 102 is greater than that of the dust collection mechanism 4, ensuring that the dust collection mechanism 4 can be removed from the filter box 1. The upper end of the filter element replacement port 102 is provided with a cover plate 2 that presses down the filter element 3.

[0026] The filtration device is installed at the tail gas emission end of the furan ammonium salt production line. The tail gas generated during the production of furan ammonium salt enters the filter box 1, where solid particles in the tail gas are filtered by the filter element 3. The settled solid particles are collected in the dust collection box 401. After the operation stops, the solid particles can be better collected in the dust collection box 401 by the action of the sliding plate 105. When the filter element 3 is taken out, the solid particles collected at the bottom can be cleaned up at the same time.

[0027] To improve the stability of the filter box 1, support plates 101 are provided at both ends of the bottom of the filter box 1. The bottom of the support plates 101 is flush with the bottom of the support plate 104, and together they support the filter box 1.

[0028] The filter box 1 has a funnel structure at both ends, which makes the airflow smoother, reduces resistance, and lowers wind noise.

[0029] like Figure 5As shown, the filter element 3 has slots 303 on both sides, and the upper end of the base 402 has a clip 404 that inserts into the slots 303, making disassembly and assembly simple and quick.

[0030] The inner wall of the filter box 1 is provided with guide strips 103, and the two ends of the base 402 are provided with relief grooves 403 that cooperate with the guide strips 103. The two ends of the filter element 3 are provided with guide grooves 302 that cooperate with the guide strips 103. The guide strips 103 increase the sealing between the filter box 1 and the filter element 3, and can also fix the filter element 3, thereby improving the stability and reliability during use.

[0031] like Figure 4 As shown, the bottom of the cover plate 2 is provided with a first sealing strip 203 that cooperates with the filter box 1. The cover plate 2 is connected to the filter box 1 by bolts 201. A sealing ring 202 is fitted on the bolts 201. The sealing ring 202 is located between the cover plate 2 and the filter box 1. The upper end of the filter element 3 is provided with a second sealing strip 301 that cooperates with the cover plate 2 to ensure the sealing effect.

[0032] When cleaning is required, open the cover 2, pull out the filter element 3, remove the dust collection mechanism 4 from the bottom of the filter element 3, and clean the filter element 3 and the collection box. After cleaning, connect the base 402 to the filter element 3, install the filter element 3 along the guide strip 103, and finally install the cover 2 to seal it.

[0033] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A tail gas filtration device for furan ammonium salt production, comprising a filter box, wherein a filter element is provided inside the filter box, and a dust collection mechanism is provided at the bottom of the filter element, characterized in that: The dust collection mechanism includes a base detachably connected to the bottom of the filter element. Dust collection boxes are provided on both sides of the base. The bottom of the dust collection boxes is inclined. The bottom of the filter box is provided with a support plate for supporting the base. Inclined sliding plates are connected to both sides of the support plate. The dust collection boxes are closely attached to the upper end of the sliding plates. The upper end of the filter box is provided with a filter element replacement port. The upper end of the filter element replacement port is provided with a cover plate that presses down on the filter element.

2. The tail gas filtration device for furan ammonium salt production as described in claim 1, characterized in that: The bottom of the filter box is equipped with a support plate.

3. The tail gas filtration device for furan ammonium salt production as described in claim 1, characterized in that: The filter box has funnel-shaped structures at both ends.

4. The tail gas filtration device for furan ammonium salt production as described in claim 1, characterized in that: The filter element has slots on both sides, and the upper end of the base has a clip that can be inserted into the slots.

5. The tail gas filtration device for furan ammonium salt production as described in claim 1, characterized in that: The filter box has guide strips on its inner wall, the base has clearance grooves at both ends that cooperate with the guide strips, and the filter element has guide grooves at both ends that cooperate with the guide strips.

6. The tail gas filtration device for furan ammonium salt production as described in claim 1, characterized in that: The bottom of the cover plate is provided with a first sealing strip that cooperates with the filter box. The cover plate is connected to the filter box by bolts. The upper end of the filter element is provided with a second sealing strip that cooperates with the cover plate.

7. The tail gas filtration device for furan ammonium salt production as described in claim 1, characterized in that: The number of filter elements is two.

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