Special belt filter for calcium sulfate whiskers

Abstract

The utility model relates to the technical field of calcium sulfate whisker production, and provides a special belt filter for calcium sulfate whiskers, which comprises a rack, connecting shafts are arranged at two ends of the rack, driving shafts are fixedly connected to the peripheries of the connecting shafts, a conveying filter belt is sleeved between the driving shafts, the pore diameter of the conveying filter belt is 20 microns, and the diameter of the conveying filter belt is 20 microns. A plurality of compression rollers which are distributed at intervals are arranged on the rack, mounting blocks are arranged at the two ends of each compression roller, the mounting blocks are rotatably connected with the compression rollers, connecting plates are fixedly connected to the ends of the mounting blocks, the mounting blocks are slidably connected with the rack, and mounting frames are fixedly connected to the positions, located on the mounting blocks, of the rack; a sliding plate is slidably connected into the mounting frame, and a pressure spring is fixedly connected between the sliding plate and the connecting plate. The pressure of the compression roller on whisker slurry can be adjusted according to the thickness of a filter cake, local stress concentration is reduced, the fracture rate of whiskers is reduced, the quality of dried whiskers is improved, and economic benefits are prevented from being damaged.

Description

A belt filter specifically for calcium sulfate whiskers Technical Field

[0001] This utility model relates to the field of calcium sulfate whisker production technology, and in particular to a special belt filter for calcium sulfate whiskers. Background Technology

[0002] Calcium sulfate whiskers are inorganic single-crystal materials with high aspect ratio, high strength, high temperature resistance, and chemical stability. They are widely used in composite material reinforcement, friction materials, coatings, and environmental adsorption. During their production, the whisker slurry needs to undergo solid-liquid separation to obtain a high-purity, low-damage finished product.

[0003] Currently, solid-liquid separation of calcium sulfate whiskers is commonly achieved using belt filters. This equipment utilizes pressure rollers to compress the whisker slurry for dehydration and filtration. However, the pressure rollers in traditional belt filters are mostly made of steel or hard rubber, with fixed positions and non-adjustable pressure. Since the thickness of the residual filter cake varies depending on the concentration of the whisker slurry, the unadjustable pressure may cause excessive pressure on the whiskers. Localized stress concentration can easily lead to whisker breakage, thus affecting the quality of the dried whiskers and reducing economic efficiency. Summary of the Invention

[0004] The purpose of this invention is to address the problem that existing pressure rollers are mostly made of steel or hard rubber, with fixed positions and unadjustable pressure. Since the thickness of the residual filter cake varies depending on the concentration of whisker slurry, the unadjustable pressure may cause excessive pressure on the whiskers, leading to whisker breakage due to localized stress concentration. This, in turn, affects the quality of the dried whiskers and reduces economic efficiency.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a special belt filter for calcium sulfate whiskers, comprising a frame, connecting shafts at both ends of the frame, drive shafts fixedly connected to the outer periphery of the connecting shafts, a conveyor filter belt sleeved between the drive shafts, the conveyor filter belt having an aperture of 20μm, multiple spaced pressure rollers arranged on the frame, mounting blocks at both ends of each pressure roller, the mounting blocks being rotatably connected to the pressure rollers, connecting plates fixedly connected to the ends of the mounting blocks, the mounting blocks being slidably connected to the frame, and the frame being fixed at the mounting blocks. The device is connected to a mounting frame, within which a sliding plate is slidably connected. A compression spring is fixedly connected between the sliding plate and the connecting plate. A height adjustment mechanism is provided between the mounting frame and the sliding plate on one side, and a guide mechanism is provided between the mounting frame and the sliding plate on the other side. An adjustment mechanism is also provided, which can be used manually or by connecting the adjustment mechanism to an external controller to adjust the height of the pressure roller. This allows for adjustment of the pressure roller on the whisker slurry according to the filter cake thickness, reducing the occurrence of local stress concentration, reducing the whisker breakage rate, improving the quality of the dried whiskers, and preventing economic losses.

[0006] In a preferred embodiment, the height adjustment mechanism includes a threaded rod fixedly connected to the top of the sliding plate, and a rotating ring rotatably connected to the top of the mounting bracket. The rotating ring is threadedly connected to the threaded rod, and the rotation of the rotating ring can drive the threaded rod to move vertically upward, thereby adjusting the position and height of the pressure spring, thereby changing the distance between the pressure spring and the pressure roller, and thus adjusting the pressure of the pressure roller on the whisker slurry.

[0007] In a preferred embodiment, the guiding mechanism includes a guide handle fixedly connected to the top of the sliding plate. The guide handle is slidably connected to the mounting frame, and the guide handle, in conjunction with the mounting frame, guides the movement of the pressure roller to the other side.

[0008] In a preferred embodiment, the outer circumference of the rotating ring is provided with spaced rectangular grooves to improve the contact friction of the rotating ring, making it easier to drive the rotating ring to rotate.

[0009] In a preferred embodiment, the outer surface of the pressure roller is coated with a polyurethane layer to reduce the stiffness of the outer surface of the pressure roller, reduce stress concentration, and reduce the occurrence of whisker breakage.

[0010] In a preferred embodiment, a waste liquid collection hopper is fixedly installed at the bottom of the conveyor belt on the frame, and a drain outlet is fixedly installed at the bottom of the waste liquid collection hopper. The drain outlet is connected to an external waste liquid pipeline. The waste liquid collection hopper facilitates the collection of filtered wastewater and reduces the difficulty of wastewater collection and treatment.

[0011] In a preferred embodiment, a scraper is fixedly connected to the frame at the output end of the conveyor belt, and a coarse filter screen is movably installed on the upper part of the frame at the input end of the conveyor belt. The scraper can scrape off the output filter cake for collection, and the coarse filter screen can filter large particulate impurities, thereby improving the purity of the whisker slurry.

[0012] In a preferred embodiment, a stepper motor is mounted on the lower end of the connecting shaft on one side of the frame. A second pulley is fixedly connected to the output shaft of the stepper motor. A first pulley is fixedly connected to the outer periphery of the connecting shaft above the second pulley. A transmission belt is sleeved between the first pulley and the second pulley. A protective shell is mounted on the frame outside the transmission belt. The stepper motor can drive the connecting shaft to rotate through the second pulley and the first pulley, thereby providing power for the movement of the filter belt. The protective shell can protect the transmission belt and prevent the safety hazard of belt injury.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] This invention is equipped with an adjustment mechanism that allows for manual adjustment or connection to an external controller to adjust the height of the pressure roller. This allows for adjustment of the pressure roller's pressure on the whisker slurry based on the filter cake thickness, reducing localized stress concentration, decreasing whisker breakage rate, improving the quality of the dried whiskers, and preventing economic losses. Attached Figure Description

[0015] Figure 1 is a three-dimensional structural diagram of a special belt filter for calcium sulfate whiskers provided by this utility model;

[0016] Figure 2 is a three-dimensional structural diagram of a special belt filter for calcium sulfate whiskers provided by this utility model (with the protective shell removed);

[0017] Figure 3 is a cross-sectional view of a special belt filter for calcium sulfate whiskers provided by this utility model;

[0018] Figure 4 is a partial enlarged view of section B in Figure 2 of a special belt filter for calcium sulfate whiskers provided by this utility model;

[0019] Figure 5 is a partial enlarged view of section A in Figure 2 of a special belt filter for calcium sulfate whiskers provided by this utility model.

[0020] Legend:

[0021] 1. Frame; 2. Conveyor filter belt; 3. Coarse filter screen; 4. Protective shell; 5. Pressure roller; 6. First pulley; 7. Connecting shaft; 8. Second pulley; 9. Stepper motor; 10. Mounting block; 11. Compression spring; 12. Connecting plate; 13. Mounting bracket; 14. Rotary ring; 15. Threaded rod; 16. Sliding plate; 17. Waste liquid collection hopper; 18. Drain port; 19. Drive shaft; 20. Scraper; 21. Guide handle. Detailed Implementation

[0022] 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.

[0023] Please refer to Figures 1-5. This utility model provides a technical solution: a special belt filter for calcium sulfate whiskers, including a frame 1, with connecting shafts 7 at both ends of the frame 1, and drive shafts 19 fixedly connected to the outer periphery of the connecting shafts 7. A conveyor filter belt 2 is sleeved between the drive shafts 19, and the conveyor filter belt 2 has a pore size of 20μm. Multiple spaced pressure rollers 5 are arranged on the frame 1, and mounting blocks 10 are provided at both ends of the pressure rollers 5. The mounting blocks 10 are rotatably connected to the pressure rollers 5, and connecting plates 12 are fixedly connected to the ends of the mounting blocks 10. The mounting blocks 10 are slidably connected to the frame 1, and mounting frames 13 are fixedly connected to the mounting blocks 10 on the frame 1. Sliding plates 16 are slidably connected inside the mounting frames 13, and compression springs 11 are fixedly connected between the sliding plates 16 and the connecting plates 12. A height adjustment mechanism is provided between the frame 13 and the sliding plate 16, and a guide mechanism is provided between the mounting frame 13 and the sliding plate 16 on the other side. A feeder is set at the input end of the conveyor filter belt 2 to function as a material feeder. A backwasher is set inside the conveyor filter belt 2 to clean the conveyor filter belt 2. This application is provided with an adjustment mechanism that can be adjusted manually or by connecting the adjustment mechanism to an external controller. By changing the distance between the initial point of the pressure spring 11 and the pressure roller 5, the pressure of the pressure roller 5 on the whisker slurry can be adjusted, thereby adjusting the height of the pressure roller 5. Thus, the pressure of the pressure roller 5 on the whisker slurry can be adjusted according to the thickness of the filter cake, reducing the occurrence of local stress concentration, reducing the whisker breakage rate, improving the quality of the dried whiskers, and preventing economic losses.

[0024] As shown in Figures 1-5, the height adjustment mechanism includes a threaded rod 15 fixedly connected to the top of the sliding plate 16, and a rotating ring 14 rotatably connected to the top of the mounting bracket 13. The rotating ring 14 is threadedly connected to the threaded rod 15. The rotation of the rotating ring 14 can drive the threaded rod 15 to move vertically upward, thereby adjusting the position and height of the pressure spring 11, thereby changing the distance between the initial point of the pressure spring 11 and the pressure roller 5, thus adjusting the pressure of the pressure roller 5 on the whisker slurry.

[0025] As shown in Figures 1-5, the guiding mechanism includes a guide handle 21 fixedly connected to the top of the sliding plate 16. The guide handle 21 is slidably connected to the mounting frame 13. The guide handle 21, in conjunction with the mounting frame 13, guides the movement of the pressure roller 5 on the other side.

[0026] As shown in Figures 1-5, the outer circumference of the rotating ring 14 is provided with rectangular grooves distributed at intervals to improve the contact friction of the rotating ring 14, making it easier to drive the rotating ring 14 to rotate.

[0027] As shown in Figures 1-5, the outer surface of the pressure roller 5 is coated with a polyurethane layer, which reduces the stiffness of the outer surface of the pressure roller 5, reduces stress concentration, and reduces the occurrence of whisker breakage.

[0028] As shown in Figures 1-5, a waste liquid collection hopper 17 is fixedly installed at the bottom of the conveyor filter belt 2 on the frame 1. A drain port 18 is fixedly installed at the bottom of the waste liquid collection hopper 17. The drain port 18 is connected to an external waste liquid pipeline. The waste liquid collection hopper 17 facilitates the collection of filtered wastewater and reduces the difficulty of wastewater collection and treatment.

[0029] As shown in Figures 1-5, a scraper 20 is fixedly connected to the frame 1 at the output end of the conveyor filter belt 2, and a coarse filter screen 3 is movably installed on the upper part of the frame 1 at the input end of the conveyor filter belt 2. The scraper 20 can scrape off the output filter cake for collection, and the coarse filter screen 3 can filter large particulate impurities to improve the purity of the whisker slurry.

[0030] As shown in Figures 1-5, a stepper motor 9 is installed at the lower end of the connecting shaft 7 on one side of the frame 1. The output shaft of the stepper motor 9 is fixedly connected to a second pulley 8. A first pulley 6 is fixedly connected to the outer periphery of the connecting shaft 7 at the upper end of the second pulley 8. A transmission belt is sleeved between the first pulley 6 and the second pulley 8. A protective shell 4 is installed on the outside of the transmission belt on the frame 1. The stepper motor 9 can drive the connecting shaft 7 to rotate through the second pulley 8 and the first pulley 6, thereby providing power for the movement of the conveyor belt 2. The protective shell 4 can protect the transmission belt and prevent the safety hazard of belt injury.

[0031] Working principle: When filtering whisker slurry, the whisker slurry is fed into the input end of the conveyor filter belt 2 via the feeder. During the input process, the coarse filter screen 3 filters out large particles of impurities, improving the purity of the whisker slurry. The area before reaching the pressure roller 5 is the weight filtration area, where waste liquid can be discharged through the filter holes of the conveyor filter belt 2 by gravity. When the slurry reaches the area of ​​the pressure roller 5, it is subjected to squeezing pressure by the pressure roller 5, further squeezing out the liquid in the whisker slurry. The multiple spaced pressure rollers 5 can further increase the liquid discharge rate of the whisker slurry. The thickness of the filter cake produced by the weight filtration zone will vary when dealing with whisker slurries of different concentrations. The rotation of the rotating ring 14 can drive the threaded rod 15 to move vertically upward, thereby adjusting the position and height of the pressure spring 11. This changes the distance between the initial point of the pressure spring 11 and the pressure roller 5, thus adjusting the pressure of the pressure roller 5 on the whisker slurry. This application can adjust the pressure of the pressure roller 5 on the whisker slurry according to the filter cake thickness, reduce the occurrence of local stress concentration, reduce the whisker breakage rate, improve the quality of the dried whiskers, and prevent economic losses.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A belt filter for calcium sulfate whiskers, comprising a feeder and a backflusher, characterized in that, The system includes a frame (1), with connecting shafts (7) at both ends. A drive shaft (19) is fixedly connected to the outer periphery of each connecting shaft (7). A conveyor filter belt (2) is sleeved between the drive shafts (19). The conveyor filter belt (2) has a pore size of 20 μm. Multiple spaced pressure rollers (5) are arranged on the frame (1). Mounting blocks (10) are provided at both ends of each pressure roller (5). The mounting blocks (10) are rotatably connected to the pressure rollers (5). A connecting rod is fixedly connected to the end of each mounting block (10). The mounting block (10) is slidably connected to the frame (1). The frame (1) is fixedly connected to the mounting block (10) at each mounting bracket (13). A sliding plate (16) is slidably connected inside the mounting bracket (13). A compression spring (11) is fixedly connected between the sliding plate (16) and the connecting plate (12). A height adjustment mechanism is provided between the mounting bracket (13) and the sliding plate (16) on one side, and a guide mechanism is provided between the mounting bracket (13) and the sliding plate (16) on the other side.

2. The belt filter for calcium sulfate whiskers according to claim 1, characterized in that: The height adjustment mechanism includes a threaded rod (15) fixedly connected to the top of the sliding plate (16), and a rotating ring (14) rotatably connected to the top of the mounting bracket (13), the rotating ring (14) being threadedly connected to the threaded rod (15).

3. The belt filter for calcium sulfate whiskers according to claim 1, characterized in that: The guiding mechanism includes a guide handle (21) fixedly connected to the top of the sliding plate (16), and the guide handle (21) is slidably connected to the mounting bracket (13).

4. The belt filter for calcium sulfate whiskers according to claim 2, characterized in that: The outer periphery of the rotating ring (14) is provided with rectangular grooves distributed at intervals.

5. The belt filter for calcium sulfate whiskers according to claim 1, characterized in that: The outer surface of the pressure roller (5) is coated with a polyurethane layer.

6. The belt filter for calcium sulfate whiskers according to claim 1, characterized in that: The frame (1) is fixedly installed with a waste liquid collection hopper (17) at the bottom of the conveyor filter belt (2). The bottom of the waste liquid collection hopper (17) is fixedly installed with a drain port (18), which is connected to an external waste liquid pipeline.

7. A belt filter for calcium sulfate whiskers according to claim 1, characterized in that: The frame (1) is fixedly connected to the output end of the conveyor belt (2) with a scraper (20), and a coarse filter screen (3) is movably installed on the upper part of the frame (1) at the input end of the conveyor belt (2).

8. A belt filter for calcium sulfate whiskers according to claim 1, characterized in that: The frame (1) is equipped with a stepper motor (9) at the lower end of the connecting shaft (7) on one side. The output shaft of the stepper motor (9) is fixedly connected to a second pulley (8). A first pulley (6) is fixedly connected to the outer periphery of the connecting shaft (7) at the upper end of the second pulley (8). A transmission belt is sleeved between the first pulley (6) and the second pulley (8). A protective shell (4) is installed on the frame (1) outside the transmission belt.

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