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CN-122006317-A - Filtering equipment for recycling industrial waste liquid and using method

CN122006317ACN 122006317 ACN122006317 ACN 122006317ACN-122006317-A

Abstract

The invention relates to the technical field of industrial waste liquid filtration, in particular to a filtering device for industrial waste liquid recovery and a using method thereof. The filter bag comprises a stripping assembly, the stripping assembly comprises a bottom plate fixedly arranged at the bottom of a filter bag, a vertical rod is fixedly arranged on the upper side of the bottom plate, a plurality of annular scrapers are uniformly arranged on the outer side of the filter bag from top to bottom, the annular scrapers are connected through a plurality of connecting ropes, and a plurality of elastic ropes are fixedly connected between the uppermost annular scraper and the top of the vertical rod. According to the invention, the filter bag is lifted upwards through the bottom plate, the bottom plate drives the vertical rods to slide upwards in the process, the plurality of annular scrapers are pulled upwards through the elastic ropes, the filter cakes attached to the inner wall of the filter bin are scraped by the flexible scrapers on the inner side of the annular scrapers, and the circumferential scraping is carried out on the side wall of the filter bag while the bottom plate is lifted through the cooperative cooperation of the bottom plate and the plurality of annular scrapers, so that the cleaning efficiency of the oily filter cakes attached to the inner wall of the filter bag is improved.

Inventors

  • JIANG MINGMIN
  • ZHOU YING

Assignees

  • 南通新嘉环保科技有限公司

Dates

Publication Date
20260512
Application Date
20260413

Claims (10)

  1. 1. The utility model provides a filtration equipment for industrial waste liquid recovery, includes filtration storehouse (1), the inside of filtration storehouse (1) is provided with filter subassembly (2), filter subassembly (2) are including supporting component (21), supporting component (21) are including fixed backup pad (211) that set up in filtration storehouse (1) inside, the downside of backup pad (211) is fixed to be provided with filter bag (22), its characterized in that: The lower side of the filter bag (22) is provided with a stripping assembly (23), and the stripping assembly (23) comprises a bottom plate (231) fixedly arranged at the bottom of the filter bag (22); A vertical rod (232) is fixedly arranged on the upper side of the bottom plate (231), the vertical rod (232) is vertically arranged at the center of the bottom plate (231), and the other end of the vertical rod (232) is arranged on the upper side of the supporting plate (211); The outside of filter bag (22) is evenly provided with a plurality of annular scrapers (233) from top to bottom, connects through a plurality of connecting ropes (234) between each annular scraper (233), and is located and fixedly connected with a plurality of elastic ropes (235) between annular scraper (233) and montant (232) top of topside.
  2. 2. The industrial waste liquid recycling filter apparatus according to claim 1, wherein the plurality of annular scrapers (233) are attached to different positions of the filter bag (22), and the inner side of the annular scrapers (233) is a flexible scraper.
  3. 3. The industrial waste liquid recycling filter device according to claim 1, wherein a pressure-bearing net (24) is arranged on the outer side of the filter bag (22), the pressure-bearing net (24) is fixedly arranged on the lower side of the supporting plate (211), and an interlayer is arranged between the pressure-bearing net (24) and the bottom of the filter bag (22); one side of the pressure-bearing net (24) is provided with a second water conveying pipe (25), one end of the second water conveying pipe (25) is fixedly arranged on the outer side of the filter bin (1), and the other end of the second water conveying pipe (25) is arranged in an interlayer between the pressure-bearing net (24) and the bottom of the filter bag (22).
  4. 4. The industrial waste liquid recycling filter apparatus according to claim 1, wherein a support rod (212) is fixedly provided on an upper side of the support plate (211), and the vertical rod (232) is slidably inserted into a middle of the support rod (212); The middle of the supporting rod (212) is symmetrically and fixedly provided with a lug (213) for limiting the vertical rod (232), and a notch matched with the lug (213) is formed in the side wall of the vertical rod (232).
  5. 5. The filtering device for recycling industrial waste liquid of claim 1, wherein one side of the supporting plate (211) is fixedly connected with a first water conveying pipe (214), one end of the first water conveying pipe (214) is fixedly arranged on the outer side of the filtering bin (1), and a plurality of flushing holes (215) which correspond to the first water conveying pipe (214) in position and are communicated with the first water conveying pipe (214) are formed in the inner side of the supporting plate (211).
  6. 6. The industrial waste liquid recycling filter device according to claim 5, wherein a drain hole (216) is formed on one side of the support plate (211) far away from the first water pipe (214), and the bottom of the drain hole (216) is an inclined plane; The outside joint of filter house (1) has storage storehouse (7) corresponding with blowdown hole (216) position.
  7. 7. The industrial waste liquid recycling filter device according to claim 1, wherein the upper side of the filter assembly (2) is provided with a guide assembly (3), the guide assembly (3) comprises a guide plate (31), a rough filter plate (32) and a guide tube (33) which are sequentially arranged from top to bottom, and all the guide assembly, the rough filter plate (32) and the guide tube (33) are fixedly arranged in the filter bin (1).
  8. 8. The filtering device for recycling industrial waste liquid according to claim 7, wherein a feeding port (4) is fixedly arranged on the upper side of the filtering bin (1) and used for guiding waste liquid into the filtering bin (1), and the feeding port (4) is arranged on the upper side of the central position of the coarse filter plate (32).
  9. 9. The filtering device for recycling industrial waste liquid according to claim 1, wherein a receiving plate (5) is arranged at the lower side of the filtering component (2), and the receiving plate (5) is fixedly arranged in the filtering bin (1); An output pipe (6) corresponding to the position of the bearing plate (5) is fixedly arranged on one side of the filter bin (1), one end of the output pipe (6) is communicated with the inside of the bearing plate (5), and the bearing plate (5) is obliquely arranged towards one side of the output pipe (6).
  10. 10. A method for operating a filtration device for industrial waste recovery comprising any one of claims 1-9, characterized by comprising the method steps of: S1, raw materials put into a filter bin (1) through a feed inlet (4) flow into a filter bag (22) under the guidance of a guide assembly (3) and preliminary filtration, and fine filtration is performed through the filter bag (22); S2, filtering raw materials in the filter bag (22) through the filter bag (22), dripping the raw materials to the upper side of the bearing plate (5) through the pressure-bearing net (24), collecting filtrate through the bearing plate (5), guiding the filtrate to the output pipe (6) for outflow, and forming a filter cake in the filter bag (22) by residual impurities; S3, after the filtration is finished, water is conveyed to an interlayer between the pressure-bearing net (24) and the filter bag (22) through a second water conveying pipe (25), the filter bag (22) is lifted upwards by the bottom plate (231) under the impact of water flow, meanwhile, a plurality of annular scrapers (233) are pulled through elastic ropes (235) and filter cakes on the inner wall of the filter bag (22) are scraped off, and the scraped filter cakes fall to the upper side of the bottom plate (231); s4, after the bottom plate (231) is lifted to be flush with the bottom of the supporting plate (211), water is conveyed to each flushing hole (215) through a first water conveying pipe (214) and flushes the surface of the bottom plate (231), and a filter cake on the upper side of the bottom plate (231) flows into the storage bin (7) through the sewage draining holes (216).

Description

Filtering equipment for recycling industrial waste liquid and using method Technical Field The invention relates to the technical field of industrial waste liquid filtration, in particular to a filtering device for industrial waste liquid recovery and a using method thereof. Background In the field of industrial waste liquid treatment, the bag filter is widely applied to the solid-liquid separation process of various process fluids. For industrial waste liquid containing high-viscosity components (such as heavy tar in petrochemical industry, gelatinous byproducts in polymer production, resin residues in the coating industry and the like), filter cakes formed after filtration often show the characteristics of strong adhesiveness and compactness. The filter cake is firmly attached to the fiber surface of the filter bag to form a secondary filter layer which is difficult to clean, so that the filter pressure difference is rapidly increased, and the filter efficiency is obviously reduced. At present, a back flushing mode is mainly adopted for regeneration treatment of the filter bag after filtration, namely, in a closed state of a filter cavity, cleaning fluid (water or air) is introduced to reversely penetrate the filter bag from the clean liquid side of the filter bag through a switching valve so as to flush the filter cake. The method is suitable for loose and fragile filter cakes. However, for the viscous and compressible filter cake common in industrial waste liquid, the impact force of reverse fluid is greatly attenuated before penetrating through the filter cake layer, and only loose substances on the surface layer can be peeled off, so that the binding force between the filter cake and filter bag fibers cannot be damaged. The incomplete cleaning results in high residual resistance of the filter bag, and the filtering period is greatly shortened; To solve this problem, the existing filter apparatus is generally provided with an electric or pneumatic vibrator outside the filter chamber, however, the vibration method has a limited effect on the separation of the viscous filter cake and easily causes loosening of the apparatus connection. The vibrator only applies force to the filter cake from a single direction, and the peeling of the filter cake is a process of destroying the combination of the filter cake and the inner wall of the filter bag, and the cooperation of a plurality of acting forces is needed. Disclosure of Invention The invention aims to provide a filtering device for recycling industrial waste liquid and a using method thereof, which are used for solving the problem that the filtering efficiency of the conventional bag filter is reduced due to the fact that the viscous filter cake is difficult to clean thoroughly in the prior art, and the problem that the effect of the conventional back flushing and vibrating method is limited. In order to solve the problems, one of the objects of the present invention is to provide a filtering device for recycling industrial waste liquid, which comprises a filtering bin, wherein a filtering component is arranged in the filtering bin, the filtering component comprises a supporting component, the supporting component comprises a supporting plate fixedly arranged in the filtering bin, a filter bag is fixedly arranged on the lower side of the supporting plate, a stripping component is arranged on the lower side of the filter bag, and the stripping component comprises a bottom plate fixedly arranged at the bottom of the filter bag; The upper side of the bottom plate is fixedly provided with a vertical rod, the vertical rod is vertically arranged at the central position of the bottom plate, and the other end of the vertical rod is arranged at the upper side of the supporting plate; The outside of filter bag is evenly provided with a plurality of annular scrapers from top to bottom, connects through a plurality of connecting ropes between each annular scraper, and is located and fixedly connected with a plurality of elastic ropes between annular scraper and the montant top of topside. The bottom plate drives the montant and rises when rising to through montant pulling a plurality of elastic ropes and annular scraper blade, the outer wall of filter bag is constantly scraped to annular scraper blade in-process that rises, and scrapes the oily filter cake that adheres to at the filter bag inner wall, through the cooperation of bottom plate and a plurality of annular scraper blade, carries out circumferential scraping to the lateral wall of filter bag when lifting the bottom plate, has improved the cleaning efficiency to the oily filter cake that adheres to on the filter bag inner wall, has prevented simultaneously that the unable clearance of filter bag partial region from putting in place from leading to still filter cake to remain. As a further improvement of the technical scheme, the outer side of the filter bag is provided with a pressure-bearing net which is fix