Device for disassembling and assembling filter discs of a rotary filter

Abstract

The utility model provides a device for dismounting and assembling filter disc of rotary table filter, and its technical scheme is: including filter disc, the slope face butt joint of filter disc and conveying slope, and the filter disc is placed with hoisting mechanism and correction mechanism, correction mechanism includes pressure rod and support, the utility model has the advantages of: (1) simplifying filter disc dismounting operation, reducing labour intensity, (2) improving filter disc transfer security, avoiding equipment and personnel damage, (3) optimizing filter disc installation correction, guaranteeing assembly quality, (4) enhancing device versatility and practicality.

Description

Technical Field

[0001] This utility model belongs to the technical field of filter machine maintenance equipment, and in particular relates to a device for disassembling and assembling filter discs of a turntable filter machine. Background Technology

[0002] In phosphate chemical production, phosphate concentrate (10%-15% moisture content) is conveyed to a reaction tank via belt conveyor, where it is mixed with phosphoric acid and sulfuric acid for decomposition and crystallization. The resulting slurry overflows into a filtration system (rotary filter) for solid-liquid separation. The phosphogypsum retained by the filter discs and cloth is transported to the slag yard via a screw conveyor, while the phosphoric acid that passes through the filter cloth is pumped into the finished product tank, where it undergoes settling and concentration to become a qualified product. In this process, the stable operation of the filtration system directly determines the quality of the phosphoric acid product and the continuity of production.

[0003] However, during the filtration of phosphoric acid slurry, the filter cloth is frequently damaged due to wear and corrosion, resulting in a large amount of phosphogypsum particles being mixed into the phosphoric acid system, causing multiple problems: First, the purity of phosphoric acid drops sharply, affecting product quality; second, the phosphogypsum particles flow with the slurry, causing blockage of the liquid discharge pipe; third, after the filter disc pores are blocked, the filtration efficiency drops sharply, eventually forcing a single filtration system to shut down, affecting daily production capacity by 50-80 tons.

[0004] The existing maintenance plan has significant flaws, specifically:

[0005] (1) Difficulty in disassembling the filter disc: The filter disc and the filter press must be installed flat and tight to avoid damage to the filter cloth and leakage of material. When the filter disc is clogged, the filter disc is tightly attached to the surface of the filter press with almost no gap to pry it up. During maintenance, it is necessary to use a pry bar to pry it up forcibly. Each disassembly breaks off an average of 3-5 pry bar tips, which takes up to 2-3 hours and is extremely inefficient.

[0006] (2) High risk of handling: After the filter disc is clogged, it will weigh 150-200 kg due to the adsorption of phosphogypsum. If the filter disc is not handled properly during manual handling, it may slip and cause injury. At the same time, the filter is 0.8 meters above the ground. During the lifting process, the center of gravity may be unstable, which may cause twisting of personnel or deformation of the filter disc due to collision.

[0007] (3) Installation and debugging are complicated: When the filter discs are reinstalled, some of them are slightly deformed due to collisions during handling, making it difficult to align the fastening bolts. Each bolt requires 2-3 people to work together: 1 person uses external force to press down on the filter disc to correct the deformation, and 1-2 people tighten the bolts. The installation of a single filtration system takes more than 4 hours, and uneven bolt tightening can easily cause the filter cloth to break again. Summary of the Invention

[0008] To address the problems in the prior art, this utility model provides a device for disassembling and assembling filter discs of a turntable filter machine. The technical solution is as follows: it includes a filter disc, which abuts against the slope of a conveying ramp. A lifting mechanism and a correction mechanism are placed on the filter disc, and the correction mechanism includes a pressure rod and a bracket.

[0009] In a preferred embodiment, the lifting mechanism includes a main rod, one end of which is provided with two limiting posts, and a second sliding sleeve is provided between the two limiting posts. The second sliding sleeve is slidably connected to the main rod, and chains are fixedly provided on both sides of the second sliding sleeve. A lock is fixedly provided at the other end of the chain, and the lock is engaged with the hook.

[0010] In a preferred embodiment, the main rod is slidably connected to the first sliding sleeve, the bottom of the first sliding sleeve is fixedly connected to the column, the other end of the column is fixedly connected to the middle section of the connecting shaft, and both ends of the connecting shaft are rotatably connected to the tire.

[0011] In a preferred embodiment, the other end of the main rod is fixedly connected to the handle.

[0012] In a preferred embodiment, both ends of the first sliding sleeve are fixedly connected to the first reinforcing rod, and the other end of the reinforcing rod is fixedly connected to the connecting shaft.

[0013] In a preferred embodiment, the two sides of the column are fixedly connected to one end of the second reinforcing rod, and the other end of the reinforcing rod is fixedly connected to the connecting shaft.

[0014] In a preferred embodiment, the inclined surface of the conveying ramp is a patterned plate.

[0015] In a preferred embodiment, the bracket is placed on the filter plate, and a pressure rod is placed on the top of the bracket. One end of the pressure rod passes through the through hole of the hook, and the other end of the pressure rod is provided with a grip for manual operation.

[0016] The beneficial effects of this utility model are:

[0017] (1) The lifting mechanism can flexibly adjust the position of the hook through the sliding cooperation of the main rod and the sliding sleeve. With the stable connection of the chain and the lock, the filter disc can be lifted smoothly without the need for prying with a crowbar. This avoids the disassembly resistance when the filter disc is tightly attached to the surface of the filter machine, protects the edge of the filter disc from damage, and reduces tool wear. The entire disassembly process is convenient to operate and does not require complicated skills, which significantly reduces the physical exertion of maintenance personnel.

[0018] (2) The inclined surface of the conveying ramp is a patterned plate, which, together with the tire-type mobile base, forms a safe transition channel from the filter to the ground. After the filter disc is transferred to the ramp by the lifting mechanism, it can move smoothly along the ramp surface, replacing the traditional manual lifting and completely eliminating the risk of slippage caused by miscoordination during the handling of heavy objects. The rotating connection of the tires allows the device to flexibly adapt to the space around the filter, reducing the probability of filter disc collision and protecting the structural integrity of the filter disc.

[0019] (3) The correction mechanism provides a precise correction method for the micro-deformed filter disc through the combination of the bracket and the pressure bar. The bracket serves as a stable support, and the pressure bar can easily apply downward pressure by lever principle, so that the filter disc can be quickly reset to a flat state, which is convenient for bolt alignment and tightening. No need for multiple people to work together, simplifying the installation process, ensuring that the bolts are evenly stressed, effectively avoiding filter cloth damage caused by improper installation, and improving the operational stability of the filtration system.

[0020] (4) The lifting mechanism, conveying ramp and correction mechanism can be used alone or in combination to adapt to different specifications of turntable filter discs. The sliding structure of the main rod and the sliding sleeve allows the operating point to be adjusted according to the size of the filter disc. The tire-type base is adapted to the complex ground environment of the workshop. No additional site modification is required. The overall structure is simple and easy to maintain. It can be used stably for a long time in filter disc disassembly and assembly scenarios, improving the continuity and reliability of maintenance operations. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0022] Figure 2 This is a schematic diagram of the overall structure of the lifting mechanism in this utility model.

[0023] Figure 3 This is a schematic diagram of the calibration mechanism in this utility model.

[0024] In the diagram: 1. Filter disc; 2. Conveying ramp; 3. Lifting mechanism; 301. Handle; 302. Main rod; 303. First sliding sleeve; 304. Column; 305. Connecting shaft; 306. Tire; 307. Reinforcing rod; 308. Limiting post; 309. Second sliding sleeve; 310. Chain; 311. Lock; 4. Hook; 5. Pressure rod; 6. Support. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0026] Example

[0027] like Figure 1The device shown for disassembling and assembling the filter disc of the turntable filter includes a filter disc 1, which abuts against the slope of the conveying ramp 2. A lifting mechanism 3 and a correction mechanism are placed on the filter disc 1. The correction mechanism includes a pressure rod 5 and a bracket 6.

[0028] like Figure 2 The lifting mechanism 3 shown includes a main rod 302. One end of the main rod 302 is provided with two limiting posts 308. A second sliding sleeve 309 is provided between the two limiting posts 308. The second sliding sleeve 309 is slidably connected to the main rod 302. Chains 310 are fixedly provided on both sides of the second sliding sleeve 309. A lock 311 is fixedly provided at the other end of the chain 310. The lock 311 is fastened to the hook 4.

[0029] Furthermore, the main rod 302 is slidably connected to the first sliding sleeve 303, the bottom of the first sliding sleeve 303 is fixedly connected to the column 304, the other end of the column 304 is fixedly connected to the middle section of the connecting shaft 305, and both ends of the connecting shaft 305 are rotatably connected to the tire 306.

[0030] Furthermore, the other end of the main rod 302 is fixedly connected to the handle 301.

[0031] Furthermore, the two ends of the first sliding sleeve 303 are fixedly connected to the first reinforcing rod 307, and the other end of the reinforcing rod 307 is fixedly connected to the connecting shaft 305.

[0032] Furthermore, the two sides of the column 304 are fixedly connected to one end of the second reinforcing rod 312, and the other end of the reinforcing rod 307 is fixedly connected to the connecting shaft 305.

[0033] like Figure 1 The inclined surface of the conveying ramp 2 shown is a patterned plate, which has a good coefficient of friction, increasing the friction of the lifting mechanism 3 on the conveying ramp 2.

[0034] like Figure 3 The bracket 6 shown is placed on the filter plate 1. A pressure rod 5 is placed on the top of the bracket 6. One end of the pressure rod 5 passes through the through hole of the hook 4, and the other end of the pressure rod 5 is provided with a grip for manual operation.

[0035] The process of using the above-mentioned device is as follows: Stop the turntable filter, disassemble the filter cloth and filter cloth pressure strip, then remove the fastening bolts of the filter disc 1, push the lifting mechanism 3 up the conveying ramp 2, push it next to the filter disc 1 where the filter cloth needs to be replaced, pull or push the main rod 302 to slide in the first sliding sleeve 303, adjust to a suitable lever arm length, hook the two hooks 4 onto the two ends of the filter disc 1 respectively, then press down the handle 301 to lift the filter disc 1 through the lever principle, and push the lifting mechanism 3 from the conveying ramp 2. After leaving slope 2, transport filter disc 1 to the cleaning area for cleaning. After cleaning, use lifting mechanism 3 to transport filter disc 1 back to the turntable filter for installation. When installing and tightening the bolts, the filter disc is prone to deformation. At this time, place bracket 6 on the filter disc 1 to be installed, and attach hook 4 to one end of pressure rod 5. Hook 4 hooks onto the adjacent filter disc 1, forming a lever structure of "hook-bracket-pressure rod". Then press down on the gripping part of pressure rod 5 to press the filter disc 1 into place, and tighten the bolts to complete the installation.

Claims

1. A device for disassembling and assembling filter discs of a rotary table filter, comprising filter discs (1), characterized in that, The filter disc (1) abuts against the slope of the conveying ramp (2). A lifting mechanism (3) and a correction mechanism are placed on the filter disc (1). The correction mechanism includes a pressure rod (5) and a bracket (6).

2. The device for disassembling and assembling filter discs of a rotary table filter press according to claim 1, characterized in that, The lifting mechanism (3) includes a main rod (302), one end of which is provided with two limiting posts (308), and a second sliding sleeve (309) is provided between the two limiting posts (308). The second sliding sleeve (309) is slidably connected to the main rod (302). Chains (310) are fixedly provided on both sides of the second sliding sleeve (309), and a lock (311) is fixedly provided at the other end of the chain (310). The lock (311) is fastened to the hook (4).

3. The device for disassembling and assembling filter discs of a rotary table filter press according to claim 2, characterized in that, The main rod (302) is slidably connected to the first sliding sleeve (303), the bottom of the first sliding sleeve (303) is fixedly connected to the column (304), the other end of the column (304) is fixedly connected to the middle section of the connecting shaft (305), and both ends of the connecting shaft (305) are rotatably connected to the tire (306).

4. The device for disassembling and assembling filter discs of a rotary table filter press according to claim 3, characterized in that, The other end of the main rod (302) is fixedly connected to the handle (301).

5. The apparatus for disassembling and assembling filter discs of a rotary table filter press according to claim 3, characterized in that, The two ends of the first sliding sleeve (303) are fixedly connected to the first reinforcing rod (307), and the other end of the reinforcing rod (307) is fixedly connected to the connecting shaft (305).

6. The apparatus for disassembling and assembling filter discs of a rotary table filter press according to claim 3, characterized in that, The two sides of the column (304) are fixedly connected to one end of the second reinforcing rod (312), and the other end of the reinforcing rod (307) is fixedly connected to the connecting shaft (305).

7. The apparatus for disassembling and assembling filter discs of a rotary table filter press according to claim 1, characterized in that, The inclined surface of the conveying ramp (2) is a patterned plate.

8. The apparatus for disassembling and assembling filter discs of a rotary table filter press according to claim 1, characterized in that, The bracket (6) is placed on the filter plate (1), and a pressure rod (5) is placed on the top of the bracket (6). One end of the pressure rod (5) passes through the through hole of the hook (4), and the other end of the pressure rod (5) is provided with a grip for manual operation.

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