Sludge filter pressing and washing device for waste acid treatment

Abstract

The invention discloses a sludge filter pressing and washing device for waste acid treatment, and belongs to the technical field of industrial waste acid treatment and solid-liquid separation equipment. The device comprises a filter press, a filter pressing plate group, a carriage mechanism, a washing assembly, a lifting assembly and an air blowing assembly. The carriage mechanism is used for separating and dragging out the filter pressing plates to be cleaned from the filter pressing plate group; the lifting assemblies are symmetrically arranged on the two sides of the filter press and used for lifting the filter pressing plate. The washing assembly is mounted between the lifting assemblies and is used for washing the filter pressing plate in the lifting process; the air blowing assembly is arranged on the lifting assembly and can automatically adjust the angle and distance of an air pipe when the filter pressing plate is lifted to the top, and the plate surface is swept and blown to remove water stains and accelerate drying. The device realizes automatic separation, cleaning and drying integrated operation of the filter pressing plate, is thorough in cleaning and high in efficiency, is particularly suitable for waste acid sludge treatment scenes with strong corrosivity, can effectively prolong the service life of the filter pressing plate, and improves the operation stability and environmental protection benefits of the system.

Description

Technical Field

[0001] This invention relates to the field of industrial waste acid treatment and solid-liquid separation equipment, specifically an integrated device for sludge filtration, automatic cleaning and drying of filter plates during waste acid treatment, which is particularly suitable for the dewatering post-treatment process of acid-containing sludge in industries such as chemical, electroplating, and metallurgy. Background Technology

[0002] In industrial production, acidic wastewater often forms acidic sludge containing suspended solids after neutralization and sedimentation. This type of sludge is usually dewatered using plate and frame filter presses or chamber filter presses to form sludge cakes for subsequent disposal or resource utilization.

[0003] After prolonged operation, acidic sludge residue can easily accumulate on the surface of the filter cloth, in the gaps between the plates and frames, and in the guide grooves of a filter press. This is especially true for sludge generated during waste acid treatment, which often contains unreacted acid, metal ions, organic impurities, and other corrosive components. If not cleaned thoroughly and promptly, this will not only clog the filter cloth pores, reducing filtration efficiency and increasing energy consumption, but also shorten the lifespan of the filter press plates due to continuous corrosion from acidic substances, thus increasing equipment maintenance costs.

[0004] Currently, common cleaning methods mainly rely on manual high-pressure water jet rinsing or the installation of simple fixed spray systems. These methods have the following significant drawbacks: 1. Incomplete cleaning: Manual rinsing is insufficient to cover all areas of the board surface, especially the seams and corners; 2. Severe water stains: After cleaning, a large amount of water remains on the plate surface and filter cloth, which affects the filtration effect of the next cycle and may even lead to secondary pollution of the filtrate. 3. Low level of automation: Manual operation is labor-intensive, has a long cleaning cycle, and affects continuous production; 4. Water waste: Traditional spraying methods consume a lot of water and do not achieve a continuous operation of washing and drying; 5. High risk of equipment corrosion: Especially in the case of waste acid sludge treatment, residual acidic substances can cause corrosion to the structural components of the filter press.

[0005] Therefore, there is an urgent need for an integrated device that can automatically separate filter plates, efficiently clean them, and quickly dry them, in order to improve the overall operating efficiency and equipment durability of waste acid sludge treatment systems. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to address the problems of incomplete cleaning, low drying efficiency and insufficient automation of existing waste acid sludge after filter pressing. The invention provides a high-efficiency cleaning device that integrates drag plate, lifting, rinsing and drying.

[0007] The present invention adopts the following technical solution: A sludge filtration and washing device for waste acid treatment includes a filter press, a filter plate assembly, a drag plate mechanism, a washing assembly, a lifting assembly, and an air blowing assembly.

[0008] The drag plate mechanism is used to pull the filter plates to be cleaned laterally out of the filter plate group and separate them. It includes a drag plate device and a guide rail moving module. The drag plate device and the lifting component are installed on the same slide table to achieve coordinated positioning.

[0009] The lifting assembly consists of two sets, symmetrically arranged on both sides of the filter press, used to adsorb and lift the filter plates. Each lifting assembly includes a lifting frame, a screw slide, a worm gear assembly, and a drive screw. The screw slide has an electromagnetic suction seat on the side facing the filter press, used to adsorb the plate ears on both sides of the filter plates.

[0010] The water washing assembly is fixedly installed between the two lifting frames and includes a water spray pipe assembly and a fixing frame. The water spray pipe assembly is located on both sides of the filter press plate lifting path, with a reasonable height setting to avoid interference with other components.

[0011] The air blowing assembly is mounted on the lifting assembly and includes two sets of air ducts and an adjustment mechanism. The air ducts are slidably connected to the lifting frame via mounting seats. The adjustment mechanism includes a pipe frame, an adjustment guide rail, and a gear and rack module, which can realize the adjustment of the spacing and angle rotation of the air ducts, so that the blowing direction is always aligned with the filter press plate surface.

[0012] Furthermore, the central gear of the gear and rack module is linked to the lead screw slide of the lifting assembly via a sector gear plate, and a fixed gear rail is provided on the top of the lifting frame. When the filter press plate is lifted to near the top, the sector gear plate meshes with the fixed gear rail, driving the air duct to perform approach, rotation, and sweeping actions.

[0013] This invention achieves efficient cleaning and rapid drying of filter press plates through a continuous automated process of dragging, lifting, rinsing, and drying, making it particularly suitable for waste acid sludge treatment scenarios with strong corrosiveness and high cleaning requirements. Beneficial effects

[0014] 1. Thorough and efficient cleaning: By combining targeted rinsing with rotary blowing, it can effectively remove acidic sludge residue from the board surface and crevices, making it especially suitable for corrosive environments; 2. High degree of automation: It realizes full-process automation from plate pulling, cleaning, drying to resetting, significantly reducing the intensity of manual operation and time costs; 3. Water and energy saving: The filter is air-dried immediately after rinsing to reduce water residue, improve the efficiency of the next filter press cycle, and save rinsing water. 4. Extend equipment life: Timely and thorough cleaning can prevent long-term corrosion of filter plates and frames by acidic substances, thus extending the service life of key components; 5. High adaptability: The modular design facilitates installation and adjustment, and can be used for the renovation of existing filter presses or for the matching of new machines. It is suitable for various acidic sludge treatment scenarios such as chemical, electroplating, and metallurgy. 6. Safety and environmental protection: Closed-loop cleaning reduces acidic dust and splashes, improves the working environment, and meets clean production requirements. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ; Figure 3 This is a three-dimensional structural diagram of a portion of the present invention. Figure 1 ; Figure 4 This is a three-dimensional structural diagram of a portion of the present invention. Figure 2 ; Figure 5 This is a three-dimensional structural diagram of a portion of the present invention. Figure 3 ; Figure 6 This is a three-dimensional structural diagram of a portion of the present invention. Figure 4 ; The numbers on the map are: 1-Filter press; 2-Filter plate assembly; 21-Plate ear; 3-Slide plate mechanism; 31-Slide plate device; 32-Guide rail moving module; 321-Slide table; 4-Washing assembly; 41-Water spray pipe assembly; 42-Fixed frame; 5-Lifting assembly; 51-Lifting frame; 52-Screw slide table; 53-Worm gear assembly; 54-Transmission screw; 55-Drive mechanism; 56-Electromagnetic suction seat; 6-Air blowing assembly; 61-Air duct; 611-Transmission gear; 62-Adjusting mechanism; 621-Pipe rack; 622-Adjusting guide rail; 623-Gear and rack module; 624-Center gear; 625-Transmission rack; 626-Adjusting slide table; 63-Mounting base; 64-Sector gear plate; 65-Fixed gear rail. Detailed Implementation

[0016] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0017] like Figures 1 to 6 As shown, specific embodiments of the present invention include: 1. Structural composition: Filter press 1 and filter plate assembly 2: A conventional chamber filter press is adopted. The filter plate assembly 2 contains multiple filter plates arranged in parallel. Each filter plate has lugs 21 on both sides for suspension and positioning.

[0018] The drag plate mechanism 3 includes a drag plate device 31 and a guide rail moving module 32. The guide rail moving module 32 is horizontally mounted in front of the filter press 1, and the slide table 321 can reciprocate along the guide rail. The drag plate device 31 is fixed on the slide table 321 and is used to clamp and horizontally drag out the filter press plates to be cleaned.

[0019] Lifting assemblies 5: There are two sets, symmetrically installed on the left and right sides of the filter press 1. Each lifting assembly 5 includes a vertically arranged lifting frame 51, a screw slide 52 that moves up and down along the lifting frame 51, a worm gear assembly 53 that drives the screw slide 52, and a transmission screw 54. An electromagnetic suction seat 56 is installed on the inner side of the screw slide 52 facing the filter press, which is used to attract the plate ears 21 after the filter plates are separated from the slide plate carrier 31. The two sets of worm gear assemblies 53 are driven synchronously by the drive mechanism 55 to ensure synchronous lifting on both sides.

[0020] The water washing assembly 4 includes multiple sets of water spray pipes 41 and a fixing frame 42 connecting the lifting frames 51 on both sides. The water spray pipes 41 are arranged on both sides of the rising path of the filter press plate, with the nozzles facing the plate surface, covering most of the plate surface. The height of the water spray pipes 41 is slightly higher than the working position of the filter press plate on the filter press to avoid interference with the movement of the drag plate device 31.

[0021] Air blowing assembly 6 includes two sets of parallel air ducts 61 and an adjustment mechanism 62 for adjusting the position and angle of the air ducts. The air ducts 61 are mounted on pipe supports 621 at both ends via bearings, and have several air outlets. The air ducts 61 are slidably connected to the lifting frame 51 via mounting bases 63. The adjustment mechanism 62 includes two pipe supports 621 that can move along adjustment guide rails 622, and a gear and rack module 623 that drives the pipe supports 621. The gear and rack module 623 includes a central gear 624 and two transmission racks 625 fixedly connected to the two pipe supports 621 respectively. The ends of the air ducts 61 are equipped with transmission gears 611 that mesh with the transmission racks 625, thereby driving the air ducts 61 to rotate when the racks move.

[0022] Linkage mechanism: The central gear 624 and the sector gear 64 are coaxially fixed, and the sector gear 64 is rotatably mounted on the lead screw slide 52. A fixed gear rail 65 is provided at the top of the lifting frame 51. When the lead screw slide 52 drives the duct assembly to rise to near the top of the lifting frame, the sector gear 64 and the fixed gear rail 65 enter a meshing state. Continued rise will force the sector gear 64 to rotate, thereby driving the central gear 624 to rotate. Through rack and pinion transmission, the combined translation and rotation motion of the duct 61 is realized.

[0023] 2. Workflow: Filter plate separation: After the filter pressing operation is completed, the slide table 321 of the drag plate mechanism 3 moves to the position of the filter plate to be cleaned, the drag plate device 31 clamps it and pulls it out laterally, so as to separate it from the adjacent filter plate.

[0024] Filter plate lifting: The electromagnetic suction seats 56 on both sides are energized, adsorbing the plate ears 21 on both sides of the filter plate. The drag plate device 31 is released, and the screw slide table 52 drives the filter plate to rise along the lifting frame 51 under the drive of the worm gear group 53.

[0025] Washing process: As the filter press plate rises, it passes through the washing component 4 area, where high-pressure water jets are sprayed simultaneously from the spray pipes 41 on both sides to wash the plate surface and filter cloth in all directions.

[0026] Air drying: When the filter press plate rises to near the top of the lifting frame, the screw slide 52 continues to rise, and the fan-shaped gear plate 64 meshes with the fixed gear rail 65 to rotate, driving the adjusting mechanism 62 to move, causing the two sets of air ducts 61 to move closer to the filter press plate. At the same time, the air ducts 61 rotate around their own axis, so that the air outlets are aligned with the plate surface. The external air supply system supplies air to the air ducts 61, and the airflow sweeps and blows the plate surface, quickly blowing off residual water stains and accelerating surface drying.

[0027] Reset Placement: After purging, the lead screw slide 52 descends, the sector toothed disc 64 engages in reverse, and the air duct 61 resets to its initial position. After the filter press plate descends to its original height, the electromagnetic suction seat 56 is de-energized and released, and the filter press plate falls back into the filter press or onto the conveyor frame.

[0028] System reset: The lifting component 5 continues to descend a certain distance, raising the air-blowing component 6 to a safe height to avoid interference with subsequent tray operations. The tray mechanism 3 can then proceed to process the next filter press plate.

[0029] 3. Technical features: The combination of electromagnetic adsorption and mechanical lifting ensures stable and reliable plate handling. Washing and drying are completed continuously during the lifting process, saving operation time; The air blowing component has an adaptive adjustment function, which can automatically adjust the blowing angle and distance according to the position of the plate; With its compact overall structure, it can be used with various models of filter presses and has strong adaptability; The control system can be integrated into the main control system of the filter press to achieve fully automatic circulating cleaning.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A sludge depressurization and washing device for waste acid treatment, characterized in that, include: Filter press (1); A filter press plate assembly (2) is installed on the filter press (1); The drag plate mechanism (3) is used to drag out and separate the filter plates to be cleaned one by one; The water washing assembly (4) is used to rinse the filter press plates; Lifting assembly (5) is used to lift the filter plate so that it passes through the water washing assembly (4); The air-drying component (6) is mounted on the lifting component (5) and is used to air-dry the filter press after washing.

2. The apparatus according to claim 1, characterized in that, The slide mechanism (3) includes a slide device (31) and a guide rail moving module (32), and the slide device (31) and the lifting component (5) are both mounted on the slide table (321) of the guide rail moving module (32).

3. The apparatus according to claim 1, characterized in that, The lifting assembly (5) consists of two sets, symmetrically arranged on both sides of the filter press (1). Each set includes a lifting frame (51), a screw slide (52), a worm gear assembly (53), and a transmission screw (54).

4. The apparatus according to claim 3, characterized in that, The lead screw slide (52) is provided with an electromagnetic suction seat (56) on the side near the filter press (1) for adsorbing the plate ears (21) on both sides of the filter plate.

5. The apparatus according to claim 3, characterized in that, The water washing assembly (4) includes a water spray pipe assembly (41) and a fixing frame (42), the fixing frame (42) being connected to the lifting frame (51) on both sides.

6. The apparatus according to claim 3, characterized in that, The air blowing assembly (6) includes two sets of air ducts (61) and an adjustment mechanism (62). The air ducts (61) are slidably mounted on the lifting frame (51) via mounting bases (63).

7. The apparatus according to claim 6, characterized in that, The adjustment mechanism (62) includes two pipe supports (621), an adjustment guide rail (622), and a gear and rack module (623). The pipe supports (621) are slidably mounted on the corresponding adjustment guide rail (622) via an adjustment slide (626). The air duct (61) is inserted between the corresponding pipe supports (621). The two pipe supports (621) are connected by a gear and rack module (623). The gear and rack module (623) includes a central gear (624) and two transmission racks (625).

8. The apparatus according to claim 7, characterized in that, The air duct (61) is fitted with transmission gears (611) at both ends, and the transmission gears (611) mesh with the transmission rack (625).

9. The apparatus according to claim 7, characterized in that, The central gear (624) is connected to the lead screw slide (52) via a sector gear plate (64). The top of the lifting frame (51) is provided with a fixed gear rail (65). When the lead screw slide (52) rises to the fixed gear rail (65), the sector gear plate (64) meshes with it and drives the central gear (624) to rotate.

10. The apparatus according to claim 1, characterized in that, The tray mechanism (3), lifting component (5), water washing component (4) and air blowing component (6) work together to realize the automatic separation, rinsing and air drying of the filter press plate.

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