Anti-fouling phosphoammonium slurry filtration device

Abstract

The utility model discloses a kind of anti-fouling phosphorus ammonium slurry filtering devices, belong to chemical equipment field, including box, the feed pipe being opened in the top of box, the discharge port being opened in the bottom of box, and the filtering main body being installed in the inside of box;Box top is equipped with electric push rod, the lower end of electric push rod is connected with pressing plate, and pressing plate is slidingly connected in the outer wall of feed pipe;Through electric push rod drive pressing plate sliding, both can exert pressure to slurry and promote percolation, accelerate filtration process, and scraping plate can be slid on the upper surface of filtering main body by the aid of movable element, scale layer is scraped actively, and fouling and blockage of filtering main body are avoided;Meanwhile, driving mechanism promotes filter screen to slide on the outer wall of limiting plate, can prevent slurry from fouling on the surface of filter screen, realize the double anti-fouling of filtering main body and filter screen, this structure design realizes the combination of anti-fouling and the promotion of filtration efficiency, ensures that device long-term stable operation, reduces manual cleaning cost.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, specifically to a phosphate ammonium slurry filtration device for preventing scaling. Background Technology

[0002] In the production process of ammonium phosphate, slurry filtration is a key step in ensuring product quality. Ammonium phosphate slurry is characterized by easy crystallization and high viscosity. During the filtration process, the solute in the slurry is prone to precipitate on the surface of the filter components and form scale. As the filtration time increases, the scale layer will gradually thicken, which will not only block the filter channel, but also seriously affect the filtration efficiency and filtration accuracy.

[0003] In the existing technology, after long-term use, the surface of the filtration equipment of the ammonium phosphate slurry filtration device is prone to the formation of stubborn scale layer, and it mostly relies on manual periodic cleaning or a single passive anti-scaling structure, which leads to scale accumulation affecting filtration efficiency and reducing filtration accuracy.

[0004] Therefore, this utility model provides a phosphate slurry filtration device to prevent scaling, in order to solve the above-mentioned problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] This invention provides a phosphate slurry filtration device for preventing scaling, aiming to solve the problems mentioned in the background art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a scale-resistant ammonium phosphate slurry filtration device, comprising a housing, an inlet pipe opened at the top of the housing, an outlet opened at the bottom of the housing, and a filter body installed inside the housing.

[0009] An electric push rod is installed on the top of the housing, and a pressure plate is connected to the lower end of the electric push rod. The pressure plate is slidably connected to the outer wall of the feed pipe. A scraper is rotatably connected to the top of the filter body. A movable part is provided at the lower end of the pressure plate. The movable part is used to drive the scraper to slide on the upper surface of the filter body.

[0010] The lower end of the filter body is connected to a limiting plate, and a filter screen is slidably connected to the outer wall of the limiting plate. A driving mechanism is provided on the housing, and the driving mechanism is used to push the filter screen to slide up and down on the outer wall of the limiting plate.

[0011] As a preferred technical solution of this application, the movable component includes a fixed cylinder, a spiral groove, a spiral rod, and a rotating rod;

[0012] The lower end of the pressure plate is connected to a fixed cylinder, the fixed cylinder has a spiral groove inside, a spiral rod is slidably connected inside the spiral groove, the lower end of the spiral rod is connected to a rotating rod, the lower end of the rotating rod is rotatably connected to the surface of the filter body, and the scraper is connected to the side wall of the rotating rod.

[0013] As a preferred technical solution of this application, the lower end of the fixed cylinder is connected to a sleeve, and the inner wall of the sleeve is slidably connected to the outer wall of the rotating rod.

[0014] As a preferred technical solution of this application, the top of the pressure plate is connected to a limiting rod, and the limiting rod is slidably connected inside the box.

[0015] As a preferred technical solution of this application, a support plate is inserted at the lower end of the limiting plate, and multiple support rods are equidistantly connected to the support plate in the circumferential direction, each of the support rods being connected to the inner wall of the box.

[0016] As a preferred technical solution of this application, the drive mechanism includes a motor, a side rod, a cam, and a telescopic rod;

[0017] A motor is installed on the outer wall of the housing. A side rod is sleeved on the output end of the motor. The other end of the side rod is rotatably connected to the side wall of the support plate. A cam is connected to the side rod. The outer wall of the cam is attached to the lower surface of the filter screen. Two telescopic rods are symmetrically connected to the inner wall of the housing. The upper end of each telescopic rod is connected to the filter screen.

[0018] As a preferred technical solution of this application, the telescopic rod includes a support cylinder, a vertical pole, and a spring;

[0019] The inner wall of the box is symmetrically connected to two support cylinders. Each support cylinder has a vertical rod slidably connected inside. The top of each vertical rod is connected to the lower surface of the filter screen. Each vertical rod has a spring connected to its outer wall. The other end of each spring is connected to the inner wall of the support cylinder.

[0020] (III) Beneficial Effects

[0021] 1. The pressure plate is driven to slide by an electric actuator, which can apply pressure to the slurry to promote infiltration and accelerate the filtration process. At the same time, the moving parts can drive the scraper to slide on the upper surface of the filter body to actively scrape off the scale layer and prevent the filter body from being scaled and blocked. Simultaneously, the drive mechanism pushes the filter screen to slide up and down on the outer wall of the limiting plate, which can prevent the slurry from scaling on the surface of the filter screen. This achieves dual anti-scaling for both the filter body and the filter screen. This structural design combines anti-scaling with improved filtration efficiency, ensures long-term stable operation of the device, and reduces manual cleaning costs.

[0022] 2. When the fixed cylinder moves down with the pressure plate, the relative sliding energy between the spiral groove and the spiral rod can be precisely converted into the rotation of the spiral rod. In turn, the rotating rod drives the scraper to rotate stably and scrape off the scale layer. This simplifies the structure and ensures the synchronicity and effectiveness of the scraper's movement, thereby improving the anti-scaling efficiency of the filter body.

[0023] 3. The motor drives the side rod and cam to rotate, and with the elastic reset action of the telescopic rod, it can drive the filter screen to slide stably up and down on the outer wall of the limiting plate. The sliding frequency of the filter screen is controlled by the rotation speed of the cam to adapt to the anti-scaling requirements of different slurries, while avoiding filter screen scaling and clogging, and ensuring the efficiency and accuracy of secondary filtration. Attached Figure Description

[0024] Figure 1 A three-dimensional structural diagram of a phosphate ammonium slurry filtration device for preventing scaling.

[0025] Figure 2 This is a partial cross-sectional view of the three-dimensional structure of the housing in an anti-scaling ammonium phosphate slurry filtration device;

[0026] Figure 3 A three-dimensional structural diagram of a phosphate slurry filtration device for preventing scaling, comprising a filter body, a limiting plate, a filter screen, a support plate, a support rod, and a telescopic rod.

[0027] Figure 4 This is a partial cross-sectional view of the three-dimensional structure of the pressure plate, fixed cylinder, spiral groove and sleeve in a phosphate slurry filtration device for preventing scaling.

[0028] Figure 5 This is a three-dimensional structural diagram of the filter body, scraper, screw rod, and rotating rod in a phosphate slurry filtration device for preventing scaling.

[0029] Figure 6 This is a partial cross-sectional schematic diagram of the three-dimensional structure of the support cylinder, uprights, and springs in an anti-scaling ammonium phosphate slurry filtration device.

[0030] In the picture:

[0031] 1. Housing; 2. Feed pipe; 3. Filter body; 4. Electric actuator; 5. Pressure plate; 6. Scraper; 7. Limiting plate; 8. Filter screen; 9. Fixing cylinder; 10. Spiral groove; 11. Spiral rod; 12. Rotating rod; 13. Sleeve; 14. Limiting rod; 15. Support plate; 16. Support rod; 17. Side rod; 18. Cam; 19. Telescopic rod; 20. Support cylinder; 21. Vertical rod; 22. Spring. Detailed Implementation

[0032] 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.

[0033] This utility model provides a phosphate slurry filtration device to prevent scaling, such as... Figure 1-6 As shown, it includes a housing 1, a feed pipe 2 opened at the top of the housing 1, a discharge port opened at the bottom of the housing 1, and a filter body 3 installed inside the housing 1.

[0034] An electric push rod 4 is installed on the top of the housing 1. A pressure plate 5 is connected to the lower end of the electric push rod 4. The pressure plate 5 is slidably connected to the outer wall of the feed pipe 2. A scraper 6 is rotatably connected to the top of the filter body 3. A movable part is provided at the lower end of the pressure plate 5. The movable part is used to drive the scraper 6 to slide on the upper surface of the filter body 3.

[0035] The lower end of the filter body 3 is connected to a limiting plate 7, and a filter screen 8 is slidably connected to the outer wall of the limiting plate 7. A driving mechanism is provided on the housing 1, which is used to push the filter screen 8 to slide up and down on the outer wall of the limiting plate 7. The pressure plate 5 is driven to slide by the electric push rod 4, which can not only apply pressure to the slurry to promote infiltration and accelerate the filtration process, but also drive the scraper 6 to slide on the upper surface of the filter body 3 with the help of the moving parts, actively scraping off the scale layer and preventing the filter body 3 from being scaled and blocked. At the same time, the driving mechanism pushes the filter screen 8 to slide up and down on the outer wall of the limiting plate 7, which can prevent the slurry from scaling on the surface of the filter screen 8. This achieves dual anti-scaling for the filter body 3 and the filter screen 8. This structural design combines anti-scaling and improved filtration efficiency, ensures long-term stable operation of the device, and reduces manual cleaning costs.

[0036] like Figure 2 , Figure 4 and Figure 5 As shown, the movable parts include a fixed cylinder 9, a spiral groove 10, a spiral rod 11, and a rotating rod 12;

[0037] A fixed cylinder 9 is connected to the lower end of the pressure plate 5. A spiral groove 10 is opened inside the fixed cylinder 9. A spiral rod 11 is slidably connected inside the spiral groove 10. A rotating rod 12 is connected to the lower end of the spiral rod 11. The lower end of the rotating rod 12 is rotatably connected to the surface of the filter body 3. A scraper 6 is connected to the side wall of the rotating rod 12. When the fixed cylinder 9 moves down with the pressure plate 5, the relative sliding between the spiral groove 10 and the spiral rod 11 can be accurately converted into the rotation of the spiral rod 11. Then, the rotating rod 12 drives the scraper 6 to rotate stably and scrape off the scale layer. This simplifies the structure and ensures the synchronicity and effectiveness of the scraper 6's movement, thereby improving the anti-scaling effect of the filter body 3.

[0038] like Figure 4 As shown, a sleeve 13 is connected to the lower end of the fixed cylinder 9. The inner wall of the sleeve 13 is slidably connected to the outer wall of the rotating rod 12. The sleeve 13 slides on the outer wall of the rotating rod 12, which can effectively shield the rotating rod 12 and the spiral rod 11, preventing the ammonium phosphate slurry from directly contacting the spiral rod 11 and the spiral groove 10, preventing the slurry from adhering and causing transmission jamming, ensuring the smooth transmission and service life of the moving parts, and reducing equipment failures caused by slurry contamination.

[0039] like Figure 2 As shown, a limiting rod 14 is connected to the top of the pressure plate 5, and the limiting rod 14 is slidably connected inside the housing 1. The limiting rod 14 slides inside the housing 1, which can accurately limit the movement direction of the pressure plate 5, prevent the pressure plate 5 from deviating or shaking during the up and down sliding process, ensure that the pressure plate 5 applies uniform and stable pressure to the slurry, and at the same time ensure the accuracy of the transmission of moving parts, thereby improving the stability of the device operation.

[0040] like Figure 3 As shown, a support plate 15 is inserted into the lower end of the limiting plate 7. Multiple support rods 16 are equidistantly connected to the support plate 15 in the circumferential direction. Each support rod 16 is connected to the inner wall of the housing 1. The support plate 15 provides a stable support foundation for the limiting plate 7 and the drive mechanism. The multiple circumferentially distributed support rods 16 can evenly distribute the force to the inner wall of the housing 1, which enhances the overall structural strength of the device and prevents the limiting plate 7 or the drive mechanism from deforming due to uneven force when the filter screen 8 slides. This ensures the stability of the filter screen 8 sliding and the service life of the device.

[0041] like Figure 2 As shown, the drive mechanism includes a motor, a side rod 17, a cam 18, and a telescopic rod 19;

[0042] A motor is installed on the outer wall of the housing 1. A side rod 17 is sleeved on the output end of the motor. The other end of the side rod 17 is rotatably connected to the side wall of the support plate 15. A cam 18 is connected to the side rod 17. The outer wall of the cam 18 is attached to the lower surface of the filter screen 8. Two telescopic rods 19 are symmetrically connected to the inner wall of the housing 1. The upper end of each telescopic rod 19 is connected to the filter screen 8. The motor drives the side rod 17 and the cam 18 to rotate. With the elastic reset action of the telescopic rods 19, the filter screen 8 can be driven to achieve stable up and down reciprocating sliding on the outer wall of the limiting plate 7. The sliding frequency of the filter screen 8 is controlled by the rotation speed of the cam 18 to adapt to the anti-scaling requirements of different slurries. At the same time, it avoids the filter screen 8 from scaling and clogging, and ensures the efficiency and accuracy of secondary filtration.

[0043] like Figure 6 As shown, the telescopic rod 19 includes a support cylinder 20, a vertical rod 21, and a spring 22;

[0044] Two support cylinders 20 are symmetrically connected to the inner wall of the housing 1. Each support cylinder 20 has a slidably connected upright rod 21 inside. The top of each upright rod 21 is connected to the lower surface of the filter screen 8, and a spring 22 is connected to the outer wall of each upright rod 21. The other end of each spring 22 is connected to the inner wall of the support cylinder 20. The support cylinder 20 provides sliding guidance for the upright rod 21. The elastic force of the spring 22 can quickly drive the upright rod 21 and the filter screen 8 to move downwards and reset when the non-protruding part of the cam 18 contacts the filter screen 8, ensuring the continuity and rhythm of the filter screen 8's up-and-down sliding. The buffering effect of the spring 22 also reduces the impact force when the filter screen 8 contacts the cam 18, reduces component wear, extends the service life of the drive mechanism, and improves the reliability of the filter screen 8's anti-scaling action.

[0045] Working principle: When the device starts running, the ammonium phosphate slurry enters the inside of the tank 1 through the feed pipe 2 at the top of the tank 1, and is filtered through the filter body 3. The filtered slurry is discharged from the outlet at the bottom of the tank 1. During the filtration process, in order to prevent the slurry from scaling on the filter body 3 and the filter screen 8, the device will activate the corresponding mechanism to perform anti-scaling operation.

[0046] To prevent scaling on the upper surface of the filter body 3, the electric push rod 4 installed on the top of the housing 1 is activated. The electric push rod 4 extends and pushes the pressure plate 5 connected to the lower end to slide downward on the outer wall of the feed pipe 2. The pressure plate 5 will exert downward pressure on the ammonium phosphate slurry below the feed pipe 2. This pressure can increase the potential energy of the slurry itself, causing the slurry to flow and penetrate into the filter body 3 more quickly and smoothly, thus accelerating the filtration process. The limiting rod 14 connected to the top of the pressure plate 5 slides inside the housing 1, which plays a limiting role and ensures that the pressure plate 5 moves down stably. The movable part at the lower end of the pressure plate 5 opens. When the operation begins, the fixed cylinder 9 connected to the lower end of the pressure plate 5 in the moving part moves down. The spiral groove 10 opened inside the fixed cylinder 9 slides relative to the spiral rod 11, causing the spiral rod 11 to rotate. The rotating rod 12 connected to the lower end of the spiral rod 11 then rotates on the surface of the filter body 3. The scraper 6 connected to the side wall of the rotating rod 12 slides on the upper surface of the filter body 3, thereby scraping off the scale layer that may form on the upper surface of the filter body 3. At the same time, the sleeve 13 connected to the lower end of the fixed cylinder 9 slides on the outer wall of the rotating rod 12 to prevent the spiral rod 11 on the rotating rod 12 from contacting the ammonium phosphate slurry.

[0047] For the anti-scaling of filter screen 8, the drive mechanism on the housing 1 plays a role. The limiting plate 7 connected to the lower end of the filter body 3 plays a limiting and guiding role for filter screen 8. The support plate 15 inserted at the lower end of the limiting plate 7 is fixed to the inner wall of the housing 1 by multiple support rods 16, providing support for the drive mechanism. In the drive mechanism, the motor installed on the outer wall of the housing 1 starts, and the output end of the motor drives the side rod 17 to rotate. The other end of the side rod 17 rotates on the side wall of the support plate 15, and the cam 18 connected on the side rod 17 rotates accordingly. The outer wall of the cam 18 is in contact with the lower surface of the filter screen 8, pushing the filter screen 8 to slide upward on the outer wall of the limiting plate 7. At the same time, the two telescopic rods 19 symmetrically connected to the inner wall of the housing 1 are stretched. The upright rod 21 in the support cylinder 20 of the telescopic rod 19 moves upward, and the spring 22 is stretched. When the cam 18 rotates to the non-protruding part and contacts the filter screen 8, the spring 22 returns to its original position, driving the upright rod 21 to move downward, and the filter screen 8 slides downward on the outer wall of the limiting plate 7. Through the continuous rotation of cam 18 and the cooperation of telescopic rod 19, filter screen 8 slides up and down on the outer wall of limit plate 7, preventing slurry from scaling on the surface of filter screen 8. At the same time, under the action of filter screen 8, the purity of slurry after secondary filtration is higher.

[0048] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A scale-resistant ammonium phosphate slurry filtration device, comprising a housing (1), an inlet pipe (2) opened at the top of the housing (1), an outlet pipe opened at the bottom of the housing (1), and a filter body (3) installed inside the housing (1); characterized in that: An electric push rod (4) is installed on the top of the box (1). A pressure plate (5) is connected to the lower end of the electric push rod (4). The pressure plate (5) is slidably connected to the outer wall of the feed pipe (2). A scraper (6) is rotatably connected to the top of the filter body (3). A movable part is provided at the lower end of the pressure plate (5). The movable part is used to drive the scraper (6) to slide on the upper surface of the filter body (3). The lower end of the filter body (3) is connected to a limiting plate (7), and a filter screen (8) is slidably connected to the outer wall of the limiting plate (7). A driving mechanism is provided on the box body (1), and the driving mechanism is used to push the filter screen (8) to slide up and down on the outer wall of the limiting plate (7).

2. The anti-scaling ammonium phosphate slurry filtration device according to claim 1, characterized in that: The movable parts include a fixed cylinder (9), a spiral groove (10), a spiral rod (11), and a rotating rod (12). The lower end of the pressure plate (5) is connected to a fixed cylinder (9), and a spiral groove (10) is provided inside the fixed cylinder (9). A spiral rod (11) is slidably connected inside the spiral groove (10). A rotating rod (12) is connected to the lower end of the spiral rod (11). The lower end of the rotating rod (12) is rotatably connected to the surface of the filter body (3). The scraper (6) is connected to the side wall of the rotating rod (12).

3. The anti-scaling ammonium phosphate slurry filtration device according to claim 2, characterized in that: The lower end of the fixed cylinder (9) is connected to a sleeve (13), and the inner wall of the sleeve (13) is slidably connected to the outer wall of the rotating rod (12).

4. The anti-scaling ammonium phosphate slurry filtration device according to claim 1, characterized in that: The top of the pressure plate (5) is connected to a limiting rod (14), which is slidably connected inside the box (1).

5. The anti-scaling ammonium phosphate slurry filtration device according to claim 1, characterized in that: The lower end of the limiting plate (7) is provided with a support plate (15), and a plurality of support rods (16) are equidistantly connected around the support plate (15), and each support rod (16) is connected to the inner wall of the box (1).

6. The anti-scaling ammonium phosphate slurry filtration device according to claim 5, characterized in that: The drive mechanism includes a motor, a side rod (17), a cam (18), and a telescopic rod (19). A motor is installed on the outer wall of the housing (1). A side rod (17) is sleeved on the output end of the motor. The other end of the side rod (17) is rotatably connected to the side wall of the support plate (15). A cam (18) is connected on the side rod (17). The outer wall of the cam (18) is attached to the lower surface of the filter screen (8). Two telescopic rods (19) are symmetrically connected to the inner wall of the housing (1). The upper end of each telescopic rod (19) is connected to the filter screen (8).

7. The anti-scaling ammonium phosphate slurry filtration device according to claim 6, characterized in that: The telescopic rod (19) includes a support cylinder (20), a vertical rod (21), and a spring (22); The inner wall of the box (1) is symmetrically connected with two support cylinders (20). Each support cylinder (20) is slidably connected with a vertical rod (21). The top of each vertical rod (21) is connected to the lower surface of the filter screen (8). Each vertical rod (21) is connected to a spring (22) on its outer wall. The other end of each spring (22) is connected to the inner wall of the support cylinder (20).

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