Lead paste filter recovery equipment

Abstract

The utility model relates to a kind of lead paste recovery technical field, specifically to a kind of lead paste filter-pressing recovery equipment.It includes a kind of lead paste filter-pressing recovery equipment, including bottom plate, fixed frame and thrust plate are fixed on the upper end of bottom plate, the front and back ends of fixed frame and thrust plate are all fixed with light pole, fixed frame is fixed with hydraulic cylinder, the telescopic end of hydraulic cylinder is fixed with pressing plate, multiple filter-pressing components are arranged between pressing plate and thrust plate, multiple filter-pressing components are sequentially arranged in the movement direction of pressing plate, filter-pressing component is slidably connected with light pole, filter-pressing component includes two symmetrical filter-pressing units.The equipment can significantly improve filter-pressing pressure by first filter-pressing to lead paste slurry, then second filter-pressing to filter cake by air pressure driving, so as to greatly reduce the final moisture content of lead paste filter cake, meet higher process requirements.

Description

Technical Field

[0001] This utility model relates to the field of lead paste recycling technology, specifically to a lead paste pressure filtration recycling device. Background Technology

[0002] The purpose of lead-acid battery recycling is to process the metals and metal compounds appropriately and reuse them as lead products. During lead paste recycling, the lead paste contains a large amount of water, necessitating pressure filtration to remove it. Existing pressure filtration equipment is complex in structure and has high operating costs. Furthermore, the lead cake formed after dehydration of the lead paste is difficult to remove, thus severely impacting the filtration efficiency.

[0003] Existing filter presses typically employ a combination of diaphragm filter plates and chamber filter plates. A chamber filter plate is positioned on each side of the diaphragm filter plate. After the diaphragm and chamber filter plates are pressed together, compressed air is introduced into the diaphragm filter plate, causing it to expand and squeeze out impurities between the diaphragm and chamber filter plates, thus increasing the dewatering rate. During operation, to reduce the moisture content of the lead paste, significant pressure needs to be applied to the diaphragm filter plates. This results in large deformation of the filter cloth and rubber diaphragm, leading to a short service life for the diaphragm filter plates. Furthermore, existing filter presses require the simultaneous storage of both chamber filter plates and diaphragm filter plates for spare parts, increasing the difficulty of inventory maintenance.

[0004] Patent document CN215876371U discloses a lead paste filtration and recycling device for lead-acid battery recycling, comprising a rectangular cylinder with openings at both the top and bottom. An inner frame is installed inside the cylinder, with its front and rear ends in sealed contact with the front and rear side walls of the cylinder. Gaps allowing the inner frame to rotate are provided between the left and right ends of the inner frame and the left and right side walls of the cylinder. The left side of the inner frame is rotatably connected to the cylinder via a pin. Lower telescopic cylinders are fixed to the right sides of both the front and rear side walls of the cylinder, with the telescopic rods of the lower telescopic cylinders contacting the lower end of the inner frame. The inner frame is parallel to the horizontal plane, and a filter screen is fixed inside the inner frame. A pressure plate is installed inside the cylinder above the inner frame, and the pressure plate is slidably and sealingly connected to the inner edge of the cylinder. Slide plates are fixed on both sides of the lower end of the pressure plate, and the slide plates are inserted into the gaps mentioned above to seal them. An opening is opened on the pressure plate, and an inner rod passes through the opening and is concentric with it. A stop bar is fixed to the lower end of the inner rod. A pressure ring is fixed to the inner rod above the pressure plate and is concentric with it. An upper rod is fixed to the upper end of the cylinder, and an upper telescopic cylinder is fixed to the upper rod. The telescopic rod of the upper telescopic cylinder is fixedly connected to the inner rod. The inner frame of this equipment flips over, and after the lead paste is discharged, the inner frame needs to be manually restored, which is cumbersome. During the filtration process, the stop bar affects the downward stroke of the pressure plate, making it unsuitable for recovery liquids with low lead paste content. This technical solution is not suitable for continuous filtration and recovery of lead paste. Utility Model Content

[0005] The main purpose of this utility model is to provide a lead paste filtration and recycling device that can reduce the moisture content of recycled lead paste and improve the service life of filter plates.

[0006] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0007] A lead paste filtration and recycling device includes a base plate, with a fixed frame and a thrust plate fixed to the upper end of the base plate. Smooth rods are fixed to both the front and rear ends of the fixed frame and the thrust plate. A hydraulic cylinder is fixed to the fixed frame, and a pressure plate is fixed to the telescopic end of the hydraulic cylinder. Multiple filtration assemblies are arranged between the pressure plate and the thrust plate, sequentially arranged in the direction of movement of the pressure plate. The filtration assemblies are slidably connected to the smooth rods. Each filtration assembly includes two symmetrically arranged filtration units, each including a filtration plate. A stepped hole is formed on one side of the filtration plate, and an inner hole is formed at the upper end of the filtration plate. The inner hole communicates with the large hole of the stepped hole through an inlet hole on the filtration plate. A filter cloth is fixed inside the connection between the large and small holes. An inner filter plate is slidably installed inside the small holes of the stepped holes. A gap is provided between the inner filter plate and the filter cloth to allow the middle of the filter cloth to deform towards the inner filter plate. A rubber gasket is fixedly and sealed inside the small holes of the stepped holes. The rubber gasket is arc-shaped and fixedly connected to the inner filter plate in the middle. An air cavity is formed between the rubber gasket and the bottom of the small hole. An air inlet is opened on the filter plate and communicates with the air cavity. A liquid outlet is opened at the lower end of the filter plate between the rubber gasket and the inner filter plate. A liquid inlet connector communicating with the inner hole is fixed at the upper end of the filter plate. A rubber ring is fixedly and sealed on the end face of the filter plate outside the large hole of the stepped holes.

[0008] Specifically, the pressure plate and multiple filter plates are located between two smooth rods. Ear plates are fixed to both the front and rear ends of the pressure plate and filter plates, and these ear plates are slidably connected to the smooth rod on one side.

[0009] Specifically, two adjacent ear plates in the direction of movement of the pressure plate are connected by a pull rope, and the thrust plate is connected to its adjacent ear plate by a pull rope of equal length.

[0010] Specifically, the two rubber rings on the opposite end faces of the two filter plates of the filter press assembly are staggered. After the two filter plates of the filter press assembly are in sealed contact with each other, the two large holes of the two filter plates form a storage cavity.

[0011] Specifically, the outer edge of the rubber pad is fixedly and sealed to the wall of the stepped hole.

[0012] Specifically, the filter press plate is fixed with a liquid outlet connector that communicates with the liquid outlet hole, and the filter press plate is fixed with an air inlet connector that communicates with the air inlet hole.

[0013] Specifically, the larger hole of the stepped hole is a conical hole, and the smaller hole of the stepped hole is a rectangular hole.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This equipment performs a first-stage pressure filtration of lead paste slurry by pressurizing it, and then performs a second-stage pressure filtration of the filter cake by air pressure. The staged pressure filtration method can significantly increase the pressure filtration, thereby greatly reducing the final moisture content of the lead paste filter cake and meeting higher process requirements.

[0016] 2. The movable internal filter plate design allows the filter cake to be directly squeezed by the rigid internal filter plate during secondary high-pressure filtration. The filter cloth mainly plays a filtering role rather than bearing pressure and deformation, which greatly reduces the stretching and wear of the filter cloth, thereby extending its service life.

[0017] 3. Through a set of equal-length rope linkage mechanism, all filter plates can be automatically and synchronously pulled apart evenly during the return stroke of the hydraulic cylinder, so that the filter cake falls off by gravity. This realizes the mechanization and automation of the unloading process, improves efficiency, and reduces manual intervention and operational intensity.

[0018] 4. The filter press plates are guided and positioned by a smooth rod, ensuring precise and stable movement. Rubber rings are used for end-face sealing, forming a sealed storage cavity inside, effectively preventing material leakage during filtration and ensuring a clean production environment and continuous, stable operation of the filtration process.

[0019] 5. The large holes of the stepped holes are designed as cones, forming a natural inverted cone-shaped discharge slope. After the filter press plate is pulled apart, the filter cake can fall off smoothly and completely without obstruction, avoiding sticking to the wall and residue, and facilitating subsequent collection. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the present invention.

[0021] Figure 2 This is a cross-sectional view of a filter press plate.

[0022] Figure 3 This is a cross-sectional view of the two filter plates of the filter press assembly after they are sealed together.

[0023] The components in the attached diagram are named as follows: 1. Base plate, 2. Fixing frame, 3. Thrust plate, 4. Hydraulic cylinder, 5. Smooth rod, 6. Pressure plate, 7. Ear plate, 8. Pull rope, 9. Filter press plate, 10. Inner hole, 11. Inlet hole, 12. Liquid inlet connector, 13. Filter cloth, 14. Inner filter plate, 15. Rubber pad, 16. Air inlet, 17. Air inlet connector, 18. Liquid outlet hole, 19. Liquid outlet connector, 20. Rubber ring, 21. Storage cavity, 22. Air cavity. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example 1: Refer to Figures 1-3 As shown, a lead paste pressure filtration and recycling device includes a base plate 1, a fixed frame 2 and a thrust plate 3 fixed on the upper end of the base plate 1, and smooth rods 5 fixed at both the front and rear ends of the fixed frame 2 and the thrust plate 3. A hydraulic cylinder 4 is fixed on the fixed frame 2, and a pressure plate 6 is fixed on the telescopic end of the hydraulic cylinder 4. Multiple pressure filtration components are arranged between the pressure plate 6 and the thrust plate 3. The multiple pressure filtration components are arranged sequentially in the movement direction of the pressure plate 6, and the pressure filtration components are slidably connected to the smooth rods 5.

[0026] The filter press assembly includes two symmetrically arranged filter press units. Each filter press unit includes a filter press plate 9. A stepped hole is provided on one side of the filter press plate 9, and an inner hole 10 is provided at the upper end of the filter press plate 9. The inner hole 10 communicates with the large hole of the stepped hole through the inlet hole 11 on the filter press plate 9. A filter cloth 13 is fixed in the connection between the large hole and the small hole of the stepped hole. An inner filter plate 14 is slidably arranged in the small hole of the stepped hole. A gap is provided between the inner filter plate 14 and the filter cloth 13 to allow the middle part of the filter cloth 13 to deform in the direction of the inner filter plate 14.

[0027] A rubber gasket 15 is fixedly and sealed inside the small hole of the stepped hole. The rubber gasket 15 is arc-shaped, and its outer edge is fixedly and sealed to the hole wall of the small hole of the stepped hole. The middle part of the rubber gasket 15 is fixedly connected to the inner filter plate 14. An air cavity 22 is formed between the rubber gasket 15 and the bottom of the small hole. An air inlet 16 is opened on the filter plate 9. An air inlet connector 17 connected to the air inlet 16 is fixed on the filter plate 9. The air inlet 16 is connected to the air cavity 22. A liquid outlet 18 is opened at the lower end of the filter plate 9 between the rubber gasket 15 and the inner filter plate 14. A liquid outlet connector 19 connected to the liquid outlet 18 is fixed on the filter plate 9. A liquid inlet connector 12 connected to the inner hole 10 is fixed at the upper end of the filter plate 9. A rubber ring 20 is fixedly and sealed to the end face of the filter plate 9 outside the large hole of the stepped hole.

[0028] The pressure plate 6 and multiple filter plates 9 are located between two smooth rods 5. The front and rear ends of the pressure plate 6 and the filter plates 9 are fixed with ear plates 7, which are slidably connected to the smooth rods 5 on one side.

[0029] The two adjacent ear plates 7 in the direction of movement of the pressure plate 6 are connected by a pull rope 8, and the thrust plate 3 is connected to its adjacent ear plate 7 by a pull rope 8. The pull ropes 8 are of equal length.

[0030] The two rubber rings 20 on the opposite end faces of the two filter plates 9 of the filter press assembly are staggered. After the two filter plates 9 of the filter press assembly are sealed and in contact with each other, the two large holes of the two filter plates 9 form a storage cavity 21.

[0031] When the lead paste is pressure filtered, the feed hose is connected to the liquid inlet connector 12, the air rope is connected to the air inlet connector 17, and the liquid outlet hose is connected to the liquid outlet connector 19.

[0032] Start the hydraulic cylinder 4. The extension and retraction end of the hydraulic cylinder 4 drives the pressure plate 6 to approach the thrust plate 3. After the pressure plate 6 squeezes the multiple filter plates 9, the opposite end faces of the two filter plates 9 of the filter assembly are sealed and contacted. The two large holes on the two filter plates 9 form a storage cavity 21. After the lead paste slurry is pressurized, it enters the inner hole 10 through the liquid inlet connector 12. The lead paste slurry in the inner hole 10 enters the storage cavity 21 through the inlet hole 11.

[0033] As lead paste is continuously fed into the storage chamber 21, the lead paste slurry is filtered for the first time. The liquid in the lead paste slurry passes through the filter cloth 13 and the inner filter plate 14 and is discharged from the liquid outlet 18 and the liquid outlet connector 19. The middle part of the filter cloth 13 protrudes towards the inner filter plate 14 and is blocked by the inner filter plate 14.

[0034] When secondary pressure filtration is required, air is pumped into the air chamber 22 via a booster, air rope, air inlet connector 17, and air inlet 16. The rubber pad 15 expands, driving the inner filter plate 14 towards the larger hole of the stepped aperture. The inner filter plate 14 squeezes the lead paste in the storage chamber 21 through the middle of the filter cloth 13. The liquid in the lead paste passes through the filter cloth 13 and the inner filter plate 14 and is discharged again from the liquid outlet 18 and liquid outlet connector 19. During secondary pressure filtration, the two inner filter plates 14 of the pressure filtration assembly approach each other and filter the lead paste in the storage chamber 21. When the lead paste reaches the required moisture content, the deformation of the filter cloth 13 is small, thus improving the service life of the filter cloth 13.

[0035] After the filter press is completed, the hydraulic cylinder 4 is activated, causing the pressure plate 6 to move away from the thrust plate 3. Under the pulling force of the pull rope 8, the multiple filter press plates 9 gradually move away from each other. When the pull rope 8 is tightened, the hydraulic cylinder 4 is closed. At this time, the lead paste in the storage chamber 21 falls out after shedding.

[0036] Example 2: Based on Example 1, referring to... Figure 2 and Figure 3 As shown, the large hole of the stepped hole is a conical hole, and the small hole of the stepped hole is a rectangular hole.

[0037] The small holes of the stepped holes are rectangular holes, which can improve the stability of the inner filter plate 14 during movement. The large holes of the stepped holes are conical holes. After the two filter plates 9 of the filter press assembly move away from each other, the lead paste filter cake produced after filtration can easily detach and fall.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lead paste pressure filtration and recycling device, comprising a base plate (1), a fixing frame (2) and a thrust plate (3) fixed at the upper end of the base plate (1), and smooth rods (5) fixed at both the front and rear ends of the fixing frame (2) and the thrust plate (3), a hydraulic cylinder (4) fixed on the fixing frame (2), a pressure plate (6) fixed on the telescopic end of the hydraulic cylinder (4), and a plurality of pressure filtration components arranged between the pressure plate (6) and the thrust plate (3), the plurality of pressure filtration components being arranged sequentially in the direction of movement of the pressure plate (6), and the pressure filtration components being slidably connected to the smooth rods (5), characterized in that, The filter press assembly includes two symmetrically arranged filter press units. Each filter press unit includes a filter press plate (9). A stepped hole is provided on one side of the filter press plate (9). An inner hole (10) is provided at the upper end of the filter press plate (9). The inner hole (10) communicates with the large hole of the stepped hole through the inlet hole (11) on the filter press plate (9). A filter cloth (13) is fixed in the connection between the large hole and the small hole of the stepped hole. An inner filter plate (14) is slidably arranged in the small hole of the stepped hole. A gap is provided between the inner filter plate (14) and the filter cloth (13) to allow the middle part of the filter cloth (13) to deform towards the inner filter plate (14). The small hole of the stepped hole is fixedly sealed. There is a rubber pad (15), which is arc-shaped. The middle part of the rubber pad (15) is fixedly connected to the inner filter plate (14). An air cavity (22) is formed between the rubber pad (15) and the bottom of the small hole. An air inlet (16) is opened on the filter plate (9), which is connected to the air cavity (22). An outlet hole (18) is opened at the lower end of the filter plate (9) between the rubber pad (15) and the inner filter plate (14). An inlet connector (12) connected to the inner hole (10) is fixed at the upper end of the filter plate (9). A rubber ring (20) is fixedly sealed on the end face of the filter plate (9) outside the large hole of the stepped hole.

2. The lead paste pressure filtration and recovery equipment according to claim 1, characterized in that, The pressure plate (6) and multiple filter plates (9) are located between two light rods (5). The front and rear ends of the pressure plate (6) and the filter plates (9) are fixed with ear plates (7), and the ear plates (7) are slidably connected to the light rods (5) on one side.

3. The lead paste pressure filtration and recovery equipment according to claim 1, characterized in that, The two adjacent ear plates (7) of the pressure plate (6) are connected by a pull rope (8) in the direction of movement. The thrust plate (3) is connected to its adjacent ear plate (7) by a pull rope (8). The lengths of the pull ropes (8) are equal.

4. The lead paste pressure filtration and recovery equipment according to claim 1, characterized in that, The two rubber rings (20) on the opposite end faces of the two filter plates (9) of the filter press assembly are staggered. After the two filter plates (9) of the filter press assembly are sealed to each other, the two large holes of the two filter plates (9) form a storage cavity (21).

5. The lead paste pressure filtration and recovery equipment according to claim 1, characterized in that, The outer edge of the rubber pad (15) is fixedly and sealed to the wall of the stepped hole.

6. The lead paste pressure filtration and recovery equipment according to claim 1, characterized in that, The filter press plate (9) is fixed with a liquid outlet connector (19) communicating with the liquid outlet hole (18), and the filter press plate (9) is fixed with an air inlet connector (17) communicating with the air inlet hole (16).

7. The lead paste pressure filtration and recovery equipment according to claim 1, characterized in that, The larger hole of the stepped hole is a conical hole, and the smaller hole of the stepped hole is a rectangular hole.

Images