A device for the separation of cellulose acetate by sedimentation

Abstract

The utility model relates to cellulose acetate production technical field discloses a kind of sinking separation devices for cellulose acetate production, including installation bottom plate, sink tank and fixed disc, the top of the fixed disc is fixedly connected with stirring anti-blocking mechanism, the bottom of the sink tank is fixedly connected with connecting pipeline, another end of the connecting pipeline is fixedly connected with top cover, the bottom of the top cover is fixedly connected with centrifuge casing, the outside front side of the centrifuge casing is fixedly connected with leakage prevention mechanism, the stirring anti-blocking mechanism includes drive assembly and driving rod one.In the utility model, the connecting frame of the left and right sides outside the fixed rod drives the rotation of the anti-blocking brush plate, which can prevent the internal blockage of cellulose acetate in the connecting pipeline. The anti-blocking design ensures smooth flow of materials in the pipeline at all times, allowing the sinking separation device to operate continuously and stably, avoiding frequent shutdown for maintenance due to blockage, and thus improving production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of cellulose acetate production, and in particular to a precipitation separation device for cellulose acetate production. Background Technology

[0002] In large-scale cellulose acetate production plants, precipitation separation units are one of the key pieces of equipment in the production process. They can continuously and efficiently process large quantities of reaction solutions, achieving rapid separation and purification of cellulose acetate, improving production efficiency and reducing production costs. For example, in the production of cellulose acetate for common applications such as cigarette filters and textile fibers, large-scale precipitation separation units can process several tons or even tens of tons of reaction solution per hour, meeting the needs of large-scale production.

[0003] A search revealed a Chinese announcement (CN220026182U) disclosing a device for separating organic pollutants from lac production wastewater. The device includes a base plate and a sedimentation tank. A sedimentation pool is formed on the upper surface of the sedimentation tank. A glass plate is embedded in the outer wall of the sedimentation tank, and a filter screen is embedded in the baffle. Clamping blocks are provided on both sides of the baffle corresponding to the slots. A slag discharge pipe is embedded near the bottom on the left end face of the sedimentation tank, and a guide pipe is also embedded on the left end face. A stirring cylinder is connected to the sedimentation tank via a ball valve. This device separates the sedimentation tank by setting up a sedimentation tank and creating a sedimentation pool inside. The baffle and filter screen divide the sedimentation pool, allowing for initial sedimentation and filtration of large particles on the right side and secondary sedimentation and filtration on the left side. The bottom of the sedimentation pool is semi-circular for easy cleaning. The stirring cylinder is connected to the sedimentation tank via a ball valve, facilitating the mixing and stirring of organic pollutants from the lac production wastewater.

[0004] The aforementioned patent specification mentions that "the conveying mechanism transports the sediment inside the conveying trough to the left end of the conveying trough, thereby facilitating the discharge of the sediment from the sedimentation tank." However, it fails to prevent pipe blockage, which would prevent the normal transport of materials and force the operation of the sedimentation separation device to be interrupted. Cellulose acetate production is a continuous process; any interruption would not only affect the production of the current batch but also cause a chain reaction in subsequent processes, leading to chaos in the entire production system and severely reducing production efficiency. To address the above-mentioned problems, a sedimentation separation device for cellulose acetate production is proposed. Utility Model Content

[0005] This utility model proposes a precipitation separation device for cellulose acetate production, which aims to improve the problem that some existing precipitation separation devices for cellulose acetate production cannot prevent pipeline blockage.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A precipitation separation device for cellulose acetate production includes a mounting base plate, a precipitation tank, and a fixed plate. A stirring and anti-clogging mechanism is fixedly connected to the top of the fixed plate. A connecting pipe is fixedly connected to the bottom of the precipitation tank. A top cover is fixedly connected to the other end of the connecting pipe. A centrifuge housing is fixedly connected to the bottom of the top cover. An anti-leakage mechanism is fixedly connected to the front exterior of the centrifuge housing.

[0008] The stirring anti-clogging mechanism includes a drive assembly and a drive rod. The drive assembly is fixedly connected to the top of the fixed plate. Multiple stirring components are fixedly connected to the outside of the drive rod. An extension rod is fixedly connected to the bottom of the drive rod. A scraping and cleaning component is fixedly connected to the outside of the extension rod. Multiple fixing rods are fixedly connected to the bottom of the extension rod. Connecting frames are fixedly connected to the left and right sides of the outside of the fixing rod. An anti-clogging brush plate is rotatably connected inside the connecting frame.

[0009] The above solution involves: a base plate supporting the entire structure; a sedimentation tank for raw material sedimentation; a stirring and anti-clogging mechanism on the fixed plate; a drive assembly that drives the drive rod to rotate; a stirring assembly that fully stirs the raw material; and a scraping and cleaning assembly at the bottom of the extension rod that works in conjunction with the anti-clogging brush plate to prevent blockage at the bottom and inner wall of the sedimentation tank, ensuring stable operation of the device.

[0010] As a further description of the above technical solution:

[0011] The fixed plate is externally fixedly connected to a connecting mounting plate, the sedimentation tank is externally fixedly connected to a fixing ring, the bottom of the fixing ring is fixedly connected to multiple mounting support columns, and the bottom of the mounting support columns is fixedly connected to the top of the mounting base plate.

[0012] The above solution achieves reliable connection between the fixed plate and other components through the connection mounting plate. The fixing ring outside the sedimentation tank is steadily supported by multiple mounting support columns, and the bottom of the columns is firmly rooted in the mounting base plate. This structural design ensures that the sedimentation tank is stable and does not shake during operation, laying a solid foundation for efficient sedimentation operations.

[0013] As a further description of the above technical solution:

[0014] The stirring assembly includes a stirring rod, which is fixedly connected to the outside of the drive rod one. A scraper two is fixedly connected to one end of the stirring rod, and the outside of the scraper two is in contact with the inner wall of the sedimentation tank.

[0015] The above scheme involves the stirring rods being closely arranged around the drive rod. When the drive rod rotates, the stirring rods rotate at high speed, powerfully agitating the material in the sedimentation tank. The scraper connected to one end of the stirring rods adheres to the inner wall of the sedimentation tank, which not only assists in stirring but also promptly scrapes off the material adhering to the inner wall, preventing material accumulation from affecting the sedimentation effect.

[0016] As a further description of the above technical solution:

[0017] The scraping and cleaning assembly includes a connecting plate, the inside of which is fixedly connected to the outside of the extension rod. Multiple extension cleaning plates are fixedly connected to the left and right sides of the outside of the connecting plate. A scraper is fixedly connected to the outside of the extension cleaning plate, and the outside of the scraper is in contact with the inner wall of the sedimentation tank.

[0018] With the above solution: the connecting plate and the extension rod are tightly connected, the two side extension cleaning plates extend outward, and the scraper fixed on the plate is always in contact with the inner wall of the sedimentation tank. As the extension rod rotates, the scraper accurately scrapes off the material attached to the inner wall, preventing material residue and clumping, maintaining the cleanliness of the inner wall of the sedimentation tank, and ensuring the stable and efficient operation of the device.

[0019] As a further description of the above technical solution:

[0020] A second motor is fixedly connected to the bottom of the top cover. A second drive rod is fixedly connected to the drive end of the second motor. A through-hole sleeve is fixedly connected to the outside of the second drive rod. The outside of the through-hole sleeve is rotatably connected to the inside of the centrifuge housing. A pump body is fixedly connected to the front side of the outside of the centrifuge housing.

[0021] With the above solution: the drive end of motor two is connected to drive rod two, which drives the through-hole sleeve connected to it to rotate at high speed inside the centrifuge housing. The pump body is installed on the front side of the centrifuge housing, which can efficiently extract and transport the precipitated material. All components work together to achieve efficient separation of cellulose acetate and ensure smooth production process.

[0022] As a further description of the above technical solution:

[0023] The leak-proof mechanism includes a discharge pipe, which is fixedly connected to the front exterior of the centrifuge housing. A cross-shaped placement plate is fixedly connected to the rear interior of the discharge pipe. A mounting housing is fixedly connected to the outside of the cross-shaped placement plate. A return spring is installed inside the mounting housing. A limit plate is slidably connected inside the mounting housing. A sliding rod is fixedly connected to the front exterior of the limit plate. A sealing plate is fixedly connected to the front exterior of the sliding rod. A sealing ring is fixedly connected inside the discharge pipe. One end of the return spring is fixedly connected to the outside of the cross-shaped placement plate, and the other end of the return spring is fixedly connected to the outside of the sealing plate.

[0024] The above solution involves connecting the discharge pipe to the centrifuge housing. A reset spring is concealed within the housing mounted on an internal cross-shaped plate. A limiting plate slides within the housing, connecting a sliding rod to a sealing plate. With the sealing ring in place, under normal conditions, the reset spring presses against the sealing plate, tightly sealing the discharge pipe. During discharge, the material pushes open the sealing plate. Upon completion of the operation, the spring resets, preventing material leakage.

[0025] As a further description of the above technical solution:

[0026] A sensor is fixedly connected to the top right side of the top cover, a PLC controller is fixedly connected to the top left side of the top cover, a filter screen is fixedly connected inside the discharge pipe, and a sponge board is fixedly connected to the front side of the filter screen.

[0027] Through the above scheme: the right-side sensor constantly monitors the material status inside the device, the left-side PLC controller precisely controls the operating parameters, inside the discharge pipe, the filter screen can intercept impurities in the material, and the front sponge plate further adsorbs residual droplets, thus doubly ensuring the purity of the discharged material. Each component performs its own function to ensure the efficient, stable, and safe operation of the precipitation separation device for cellulose acetate production.

[0028] As a further description of the above technical solution:

[0029] The drive assembly includes a motor, which is externally fixedly connected to the outside of the fixed disk, and a reducer is fixedly connected to the drive end of the motor.

[0030] With the above solution: the motor is securely mounted outside the fixed plate. After being powered on, it releases strong power. The reducer connected to its drive end can flexibly adjust the output speed according to actual production needs, accurately adapt to the stirring operation under different working conditions, and ensure that the drive rod drives each component to operate smoothly, providing reliable power support for sedimentation and separation operations.

[0031] This utility model has the following beneficial effects:

[0032] 1. In this utility model, the extension rod can drive the connecting plate to rotate, which in turn drives the left and right side extension cleaning plates to rotate. This allows the extension cleaning plates to drive the scrapers to clean the interior of the sedimentation tank. The rotation of the extension rod also drives the fixed rod to rotate, causing the connecting frames on the left and right sides of the fixed rod to rotate the anti-clogging brush plates. This prevents cellulose acetate from clogging the inside of the connecting pipe. The anti-clogging design ensures that the material in the pipe always flows smoothly, allowing the sedimentation separation device to operate continuously and stably, avoiding frequent shutdowns and maintenance due to blockages, thereby improving production efficiency.

[0033] 2. In this utility model, the impact force of the pump body drives the cellulose acetate to squeeze the sealing plate, which in turn allows the sealing plate to slide inside the mounting housing via the sliding rod. This allows the limiting plate to squeeze the return spring, causing the return spring to deform and allowing the cellulose acetate to flow out from the cross-shaped placement plate. When the pump body stops conveying, the return spring rebounds, thus preventing leakage of the cellulose acetate. Leakage in the discharge pipe allows external impurities to enter the pipe, contaminating the cellulose acetate material being conveyed, affecting its purity and performance, and consequently impacting the quality of the final product. Effective leak prevention measures can prevent the intrusion of external impurities, ensuring the stability and reliability of product quality. Attached Figure Description

[0034] Figure 1 This is a three-dimensional schematic diagram of a precipitation separation device for cellulose acetate production proposed in this utility model;

[0035] Figure 2 This is a schematic diagram of the structure of the stirring rod of a precipitation separation device for cellulose acetate production proposed in this utility model;

[0036] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0037] Figure 4 This is a schematic diagram of the drive rod 2 of a precipitation separation device for cellulose acetate production proposed in this utility model;

[0038] Figure 5 for Figure 4 Enlarged view at point B in the middle;

[0039] Figure 6 This is a schematic diagram of the centrifuge casing of a precipitation separation device for cellulose acetate production proposed in this utility model.

[0040] Legend:

[0041] 1. Base plate; 2. Support column; 3. Fixing ring; 4. Sedimentation tank; 5. Connecting mounting plate; 6. Fixing disc; 7. Stirring anti-clogging mechanism; 701. Motor 1; 702. Reducer; 703. Drive rod 1; 704. Stirring rod; 705. Scraper 2; 706. Extension rod; 707. Scraping cleaning assembly; 70701. Connecting plate; 70702. Extension cleaning plate; 70703. Scraper 1; 708. Fixing rod; 709. Connecting frame; 7010. Anti-clogging mechanism 8. Brush plate; 9. Connecting pipe; 10. Top cover; 11. Centrifuge housing; 12. Motor II; 13. Drive rod II; 14. Through-hole sleeve; 15. PLC controller; 16. Sensor; 17. Leakage prevention mechanism; 18. Discharge pipe; 19. Cross placement plate; 10. Mounting housing; 11. Return spring; 12. Limiting plate; 13. Sliding rod; 14. Sealing plate; 15. Sealing ring; 16. Filter screen; 17. Sponge board. Detailed Implementation

[0042] 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.

[0043] Reference Figures 1 to 3This utility model provides an embodiment of a precipitation separation device for cellulose acetate production, comprising a mounting base plate 1, a precipitation tank 4, and a fixed plate 6. The surface of the mounting base plate 1 is treated to ensure stable placement and prevent displacement or shaking during operation. A connecting mounting plate 5 is fixedly connected to the outside of the fixed plate 6 for connecting the fixed plate 6. The precipitation tank 4, as the core reaction vessel, can effectively resist the erosion of acetic acid and other chemicals. It is cylindrical in shape, and the interior of the precipitation tank 4 is used for the precipitation reaction of cellulose acetate. A fixing ring 3 is fixedly connected to the outside of the precipitation tank 4. Multiple mounting support columns 2 are fixedly connected to the bottom of the fixing ring 3. The bottom of the mounting support columns 2 is fixedly connected to the top of the mounting base plate 1. A stirring anti-clogging mechanism 7 is fixedly connected to the top of the fixed plate 6. The stirring anti-clogging mechanism 7 includes a drive assembly and a drive rod 703. The drive assembly is fixedly connected to the fixed plate 6. At the top of the plate 6, the stirring anti-clogging mechanism 7 includes a drive assembly. The housing of motor 701 is effectively dustproof and waterproof, adapting to the complex environment of the production workshop. Motor 701 is externally fixedly connected to the top of the fixed plate 6. The drive assembly includes motor 701, which is externally fixedly connected to the outside of the fixed plate 6. A reducer 702 is fixedly connected to the drive end of motor 701. The function of reducer 702 is to reduce the output speed of the motor and increase the torque, so that the stirring action is more in line with the needs of the precipitation reaction. A drive rod 703 is fixedly connected to the bottom of reducer 702. The top of drive rod 703 is connected to the output shaft of reducer 702 through a coupling to ensure stable power transmission. Multiple stirring components are fixedly connected to the outside of drive rod 703. The stirring components include stirring rod 704, which can more fully stir the material in the precipitation tank 4 when rotating, promoting the precipitation reaction of cellulose acetate.

[0044] Specifically, the mounting base plate 1 is first leveled to ensure stable placement and prevent displacement and shaking of the device. The sedimentation tank 4, as the core component, is connected to the mounting base plate 1 by multiple mounting support columns 2 through its external fixed ring 3. The sedimentation tank 4 is cylindrical and is used for the cellulose acetate precipitation reaction inside, and can resist acetic acid corrosion. The fixed plate 6 is connected by the connecting mounting plate 5, and a stirring and anti-clogging mechanism 7 is set on its top. In this mechanism, the motor 701 is fixed on the top of the fixed plate 6, and its drive end is connected to the reducer 702 to reduce the speed and increase the torque. The reducer 702 is connected to the drive rod 703, and multiple stirring rods 704 are fixed on the outside of the drive rod 703. When rotating, the material in the sedimentation tank 4 is fully stirred, and the cellulose acetate precipitation reaction is promoted.

[0045] The stirring rod 704 is externally fixedly connected to the outer periphery of the drive rod 703. A scraper 705 is fixedly connected to one end of the stirring rod 704. The length of the scraper 705 is slightly smaller than the inner diameter of the sedimentation tank 4. During rotation, its outer surface can tightly adhere to the inner wall of the sedimentation tank 4, scraping away material adhering to the wall surface to prevent material accumulation from affecting the reaction and equipment performance. The outer surface of the scraper 705 contacts the inner wall of the sedimentation tank 4. An extension rod 706 is fixedly connected to the bottom of the drive rod 703. The extension rod 706 transmits the power of the drive rod 703 to the bottom of the sedimentation tank 4, driving the scraping and cleaning assembly 707 to work. The scraping and cleaning assembly 707 is fixedly connected to the outer surface of the extension rod 706. The scraping and cleaning assembly 707 includes a connecting plate 70701, the inner surface of which is fixedly connected to the outer surface of the extension rod 706. Multiple extended cleaning plates 70702 are fixedly connected to the left and right sides of the exterior of 70701. A scraper 70703 is fixedly connected to the exterior of the extended cleaning plates 70702. The scraper 70703 is an arc-shaped plate that matches the curvature of the bottom of the sedimentation tank 4. When it rotates, its exterior can make close contact with the inner wall of the bottom of the sedimentation tank 4 to scrape off the material deposited at the bottom. The exterior of the scraper 70703 is in contact with the inner wall of the sedimentation tank 4. Multiple fixed rods 708 are fixedly connected to the bottom of the exterior of the extended rod 706. A connecting frame 709 is fixedly connected to the left and right sides of the exterior of the fixed rod 708. An anti-clogging brush 7010 is rotatably connected inside the connecting frame 709. During the rotation of the anti-clogging brush 7010, the brush bristles clean the easily clogged parts such as the discharge port at the bottom of the sedimentation tank 4 to prevent material blockage and ensure the normal operation of the device.

[0046] Specifically, when the stirring anti-clogging mechanism 7 is in operation, the motor 701 drives the reducer 702, which in turn drives the connected drive rod 703 to rotate. The stirring rods 704 fixed around the drive rod 703 rotate accordingly. The scraper 705 at one end of the stirring rod 704 is adapted to the inner diameter of the sedimentation tank 4 and fits tightly against the tank wall to scrape off the attached material and prevent accumulation. The extension rod 706 at the bottom of the drive rod 703 transmits power to the bottom of the sedimentation tank 4, driving the scraping and cleaning component 707. In this component, the connecting plate 70701 connects to the extension rod 706, and the arc-shaped scraper 70703 fixed on the extension cleaning plates 70702 on both sides fits against the bottom of the tank to scrape off the deposited material. The anti-clogging brush 7010 connected to the fixed rod 708 at the bottom of the extension rod 706 cleans the easily clogged parts such as the discharge port when rotating, ensuring smooth operation of the device.

[0047] Reference Figures 4 to 5A connecting pipe 8 is fixedly connected to the bottom of the sedimentation tank 4. The inner wall of the pipe is polished to reduce the resistance of the material during transportation, ensuring that the settled material can be smoothly transported from the sedimentation tank 4 to the subsequent equipment. A top cover 9 is fixedly connected to the other end of the connecting pipe 8. A centrifuge housing 10 is fixedly connected to the bottom of the top cover 9. The centrifuge housing 10 is cylindrical in shape to withstand the high-speed rotation and material impact during centrifuge operation. A leak-proof mechanism 16 is fixedly connected to the front of the centrifuge housing 10. A second motor 11 is fixedly connected to the bottom of the top cover 9. The second motor 11 is a high-speed motor suitable for centrifuge operation, and its power is determined according to the processing capacity of the centrifuge. Given the material properties, a drive rod 12 is fixedly connected to the drive end of motor 11, driving the through-hole sleeve 13 to rotate at high speed inside the centrifuge housing 10. The through-hole sleeve 13 is fixedly connected to the outside of the drive rod 12. Multiple through holes are evenly distributed on the sleeve wall of the through-hole sleeve 13, used to separate the material through the through holes under centrifugal force during centrifugal rotation. The outside of the through-hole sleeve 13 is rotatably connected to the inside of the centrifuge housing 10. A pump body is fixedly connected to the front side of the centrifuge housing 10. The leak-proof mechanism 16 includes a discharge pipe 1601, used to convey the separated material from the centrifuge. The outside of the discharge pipe 1601 is fixedly connected to... A cross-shaped placement plate 1602 is fixedly connected to the rear side of the discharge pipe 1601, which is attached to the front exterior of the centrifuge housing 10. The cross-shaped placement plate 1602 provides stable mounting support for the mounting housing 1603. The mounting housing 1603 is fixedly connected to the exterior of the cross-shaped placement plate 1602. The interior of the mounting housing 1603 houses a return spring 1604 and a limiting plate 1605. The return spring 1604 is installed inside the mounting housing 1603, and the limiting plate 1605 is slidably connected inside the mounting housing 1603, ensuring free sliding within the mounting housing 1603. The front exterior of the limiting plate 1605 is fixedly connected to... A sliding rod 1606 is fixedly connected to a sealing plate 1607 on its outer front side to ensure that it can tightly fit the inner wall of the discharge pipe 1601 under normal conditions to prevent material leakage. A sealing ring 1608 is fixedly connected inside the discharge pipe 1601. When the internal pressure of the centrifuge reaches a certain value, and the pressure of the material on the sealing plate 1607 is greater than the elastic force of the return spring 1604, the sealing plate 1607 drives the sliding rod 1606 and the limit plate 1605 to move backward, compressing the return spring 1604, opening the discharge pipe 1601, and discharging the material. When the pressure decreases, the return spring 1604 pushes the sealing plate 1607 to reseal the discharge pipe 1601.

[0048] Specifically, the bottom of the sedimentation tank 4 is connected to the pipe 8, which has a polished inner wall. The other end of the pipe is connected to the top cover 9 and the centrifuge housing 10. The motor 11 under the top cover 9 drives the drive rod 12, which drives the through-hole sleeve 13 to rotate at high speed inside the housing. The material is separated under centrifugal force through the through hole in the sleeve wall. In the anti-leakage mechanism 16 on the front side of the centrifuge housing 10, the discharge pipe 1601 is used for material conveying. The internal cross placement plate 1602 supports the housing 1603. Inside the housing, there is a return spring 1604 and a sliding limit plate 1605. The limit plate 1605 is connected to the sliding rod 1606 and the sealing plate 1607, which cooperate with the sealing ring 1608. When the pressure inside the centrifuge is high, the material pushes the sealing plate 1607 to compress the spring, and the discharge pipe 1601 opens to discharge the material. When the pressure decreases, the spring pushes the sealing plate 1607 to reseal, preventing leakage.

[0049] Reference Figures 4 to 6 A sensor 15 is fixedly connected to the top right side of the top cover 9. The output signal of the sensor 15 is transmitted to the PLC controller 14 through a shielded cable, providing accurate data support for subsequent automated control. A PLC controller 14 is fixedly connected to the top left side of the top cover 9. The PLC controller 14 integrates core components such as CPU, memory, and input / output interfaces. Through programming, it can achieve precise control of the centrifuge's operating parameters. A filter screen 17 is fixedly connected inside the discharge pipe 1601. The filter screen 17 is circular in shape, and its diameter matches the inner diameter of the discharge pipe 1601 to ensure complete coverage. The cross-section of the discharge pipe 1601 effectively filters out impurities and large particles in the material, improving the purity and quality of the product. A sponge plate 18 is fixedly connected to the front of the filter screen 17. Its porosity is high, which can further filter and adsorb small particles and liquids in the material. Its diameter is the same as that of the filter screen 17. It can not only play a filtering role, but also buffer the flow rate of the material, reduce the impact on the inner wall of the discharge pipe 1601, and extend the service life of the equipment. One end of the return spring 1604 is fixedly connected to the outside of the cross placement plate 1602, and the other end of the return spring 1604 is fixedly connected to the outside of the sealing plate 1607.

[0050] Specifically, the sensor 15 on the top right of the top cover 9 transmits the output signal to the PLC controller 14 on the left via a shielded cable, providing data for automated control. The PLC controller 14 precisely controls the centrifuge operating parameters through programming. The filter screen 17 inside the discharge pipe 1601 is circular and matches the inner diameter of the pipe, effectively filtering impurities and large particles to improve product purity and quality. The sponge plate 18 in front of the filter screen 17 has high porosity, further filtering and adsorbing small particles and liquids, and also buffering the flow rate to protect the discharge pipe 1601. The reset spring 1604 in the anti-leakage mechanism 16 is connected to a cross placement plate 1602 at one end and a sealing plate 1607 at the other end. When the internal pressure changes, the spring, in conjunction with the sealing plate 1607, controls the opening and closing of the discharge pipe 1601 to ensure the normal operation of the device.

[0051] Working principle: By starting motor 701, motor 701 drives drive rod 703 to rotate via reducer 702. The rotation of drive rod 703 causes stirring rod 704 to rotate inside sedimentation tank 4, thus stirring cellulose acetate. The rotation of drive rod 703 also causes extension rod 706 to rotate connecting plate 70701. Under the action of connecting plate 70701, connecting plate 70701... 0701 can drive the extended cleaning plates 70702 on the left and right sides to rotate, which in turn can drive the scraper 70703 to clean the inside of the sedimentation tank 4. Under the rotation of the extension rod 706, the extension rod 706 can drive the fixed rod 708 to rotate. Under the action of the fixed rod 708, the connecting brackets 709 on the left and right sides of the fixed rod 708 drive the anti-clogging brush plate 7010 to rotate, which can prevent cellulose acetate from clogging the inside of the connecting pipe 8.

[0052] The separated cellulose acetate enters the discharge pipe 1601 through the pump body, and then the cellulose acetate is filtered through the filter screen 17 and the sponge plate 18. The impact force of the pump body causes the cellulose acetate to squeeze the sealing plate 1607, which then slides inside the mounting housing 1603 via the sliding rod 1606. The limiting plate 1605 then squeezes the return spring 1604, causing the return spring 1604 to deform, and the cellulose acetate flows out from the cross placement plate 1602. When the pump body stops conveying, the return spring 1604 rebounds, thus preventing the cellulose acetate from leaking out.

[0053] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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 precipitation separation device for cellulose acetate production, comprising a mounting base plate (1), a precipitation tank (4), and a fixing plate (6), characterized in that: The top of the fixed plate (6) is fixedly connected to a stirring anti-clogging mechanism (7), the bottom of the sedimentation tank (4) is fixedly connected to a connecting pipe (8), the other end of the connecting pipe (8) is fixedly connected to a top cover (9), the bottom of the top cover (9) is fixedly connected to a centrifuge housing (10), and the front side of the centrifuge housing (10) is fixedly connected to an anti-leakage mechanism (16). The stirring anti-clogging mechanism (7) includes a driving assembly and a driving rod (703). The driving assembly is fixedly connected to the top of the fixed plate (6). Multiple stirring assemblies are fixedly connected to the outside of the driving rod (703). An extension rod (706) is fixedly connected to the bottom of the driving rod (703). A scraping and cleaning assembly (707) is fixedly connected to the outside of the extension rod (706). Multiple fixing rods (708) are fixedly connected to the bottom of the extension rod (706). Connecting frames (709) are fixedly connected to the left and right sides of the outside of the fixing rods (708). An anti-clogging brush plate (7010) is rotatably connected inside the connecting frame (709).

2. The precipitation separation device for cellulose acetate production according to claim 1, characterized in that: The fixed plate (6) is externally fixedly connected to a connecting mounting plate (5), the sedimentation tank (4) is externally fixedly connected to a fixing ring (3), the bottom of the fixing ring (3) is fixedly connected to a plurality of mounting support columns (2), and the bottom of the mounting support columns (2) is fixedly connected to the top of the mounting base plate (1).

3. The precipitation separation device for cellulose acetate production according to claim 1, characterized in that: The stirring assembly includes a stirring rod (704), which is fixedly connected to the outside of the drive rod (703). One end of the stirring rod (704) is fixedly connected to a scraper (705), and the outside of the scraper (705) is in contact with the inner wall of the sedimentation tank (4).

4. The precipitation separation device for cellulose acetate production according to claim 1, characterized in that: The scraping and cleaning assembly (707) includes a connecting plate (70701), the inside of which is fixedly connected to the outside of the extension rod (706). Multiple extension cleaning plates (70702) are fixedly connected to the left and right sides of the outside of the connecting plate (70701). A scraper (70703) is fixedly connected to the outside of the extension cleaning plate (70702). The outside of the scraper (70703) is in contact with the inner wall of the sedimentation tank (4).

5. The precipitation separation device for cellulose acetate production according to claim 1, characterized in that: The bottom of the top cover (9) is fixedly connected to a second motor (11), the drive end of the second motor (11) is fixedly connected to a second drive rod (12), the outside of the second drive rod (12) is fixedly connected to a through-hole sleeve (13), the outside of the through-hole sleeve (13) is rotatably connected to the inside of the centrifuge housing (10), and the front side of the centrifuge housing (10) is fixedly connected to a pump body.

6. The precipitation separation device for cellulose acetate production according to claim 1, characterized in that: The leak prevention mechanism (16) includes a discharge pipe (1601), which is externally fixedly connected to the front side of the centrifuge housing (10). A cross-shaped placement plate (1602) is fixedly connected to the rear side of the discharge pipe (1601). A mounting housing (1603) is fixedly connected to the outside of the cross-shaped placement plate (1602). A return spring (1604) is provided inside the mounting housing (1603). A sliding connection is provided inside the mounting housing (1603). A limiting plate (1605) is provided, with a sliding rod (1606) fixedly connected to the outer front side of the limiting plate (1605), a sealing plate (1607) fixedly connected to the outer front side of the sliding rod (1606), a sealing ring (1608) fixedly connected to the inside of the discharge pipe (1601), one end of the return spring (1604) fixedly connected to the outside of the cross placement plate (1602), and the other end of the return spring (1604) fixedly connected to the outside of the sealing plate (1607).

7. A precipitation separation apparatus for cellulose acetate production according to claim 6, characterized in that: A sensor (15) is fixedly connected to the top right side of the top cover (9), a PLC controller (14) is fixedly connected to the top left side of the top cover (9), a filter screen (17) is fixedly connected inside the discharge pipe (1601), and a sponge board (18) is fixedly connected to the front side of the filter screen (17).

8. The precipitation separation device for cellulose acetate production according to claim 1, characterized in that: The drive assembly includes a motor (701), which is externally fixed to the outside of the fixed disk (6), and a reducer (702) is fixedly connected to the drive end of the motor (701).

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