Purifying and filtering device for polyphenylene sulfide melt and use method of purifying and filtering device

Abstract

The invention relates to the technical field of filtering devices, and discloses a polyphenylene sulfide melt purifying and filtering device and a using method thereof.The polyphenylene sulfide melt purifying and filtering device comprises a material storage barrel and a plurality of supporting legs fixedly installed at the bottom of the material storage barrel, a discharging box is fixedly installed at the bottom of the material storage barrel, and a filtering box is fixedly installed at the bottom end of the discharging box. Gas blown out through a spiral condensation pipe can blow away polyphenylene sulfide solids accumulated on the upper surface of a filter plate into a collecting tank, when air blowing holes of an air blowing pipe rotate to the position of a flow guide pipe, the gas is blown into a material falling groove through the flow guide pipe, the polyphenylene sulfide solids bonded in the material falling groove are blown away, the material falling groove is prevented from being blocked, and the service life of the material falling groove is prolonged. By means of the device, polyphenylene sulfide solids accumulated on the surface of the filter plate can be blown away, the phenomenon that the polyphenylene sulfide crystallized solids block the filter plate is avoided, and the follow-up filtering speed and effect of the filter plate are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of filtering devices, and in particular to a purification filtering device for polyphenylene sulfide melt and a use method thereof. Background Art

[0002] The sodium sulfide method is usually used in the industrial production process of polyphenylene sulfide resin. When polyphenylene sulfide is produced, sodium chloride is also mixed in as a by-product, which is a metal salt solution. After the salt solution mixed with polyphenylene sulfide is dried, there is still a large amount of metal salt and a small amount of insoluble impurities in the raw materials. Therefore, the polyphenylene sulfide after production needs to be purified and filtered again.

[0003] The existing purification and filtration device and method for polyphenylene sulfide melt (publication number: CN116672797A) have at least the following disadvantages:

[0004] When the above patent is in use, the polyphenylene sulfide solution is gradually cooled and recrystallized to produce polyphenylene sulfide solid and solvent solution, and the solvent solution and the polyphenylene sulfide solid are separated from the polyphenylene sulfide solid and the solvent solution through a solid-liquid separation mechanism, thereby purifying the polyphenylene sulfide. Since the filter plate in the above patent will accumulate polyphenylene sulfide crystallized solids on its surface when in use, the polyphenylene sulfide crystallized solids will clog the filter plate, which will reduce the filtration speed and effect in subsequent filtration. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a purification and filtering device for polyphenylene sulfide melt and a method for using the same.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A purification and filtering device for polyphenylene sulfide melt comprises a storage barrel and a plurality of legs fixedly mounted on the bottom of the storage barrel, a discharge box fixedly mounted on the bottom of the storage barrel, a filter box fixedly mounted on the bottom end of the discharge box, an opening is penetrated through the outer surface of one end of the filter box, the opening is arranged at a position close to the bottom end of the filter box, a discharge pipe is fixedly mounted on the outer surface of the other end of the filter box, a filter plate is rotatably mounted on the inner wall of the opening, the filter plate is tilted, and air blowing pipes are rotatably mounted on the inner walls of opposite sides of the filter box, the air blowing pipes are arranged above the filter plate, The outer surface of the air blowing pipe is penetrated with a plurality of air blowing holes, a cover plate is fixedly installed on the top of the storage barrel, a feed port is penetrated on the upper surface of the cover plate, a spiral condenser is fixedly installed on the lower surface of the cover plate, an air inlet end of the spiral condenser penetrates the upper surface of the cover plate, an air outlet end of the spiral condenser penetrates the outer surface of the storage barrel and is fixedly connected with a hose, one end of the air blowing pipe penetrates the outer surface of the filter box and is fixedly installed with a rotary joint, the rotary joint is fixedly connected to the other end of the hose, and the spiral condenser is communicated with the interior of the air blowing pipe through the hose and the rotary joint.

[0008] As a further solution of the present invention, a crankshaft is rotatably installed between the inner walls on opposite sides of the filter box, a curved neck is provided on the outer surface of the crankshaft, a moving rod is rotatably installed between the inner walls of the curved neck, the top end of the moving rod is rotatably installed with the lower surface of the filter plate, a driving motor is fixedly installed on the outer surface of the filter box close to the rotary joint, and the output end of the driving motor passes through the outer surface of the filter box and is fixedly installed with the rotation center of the crankshaft.

[0009] As a further solution of the present invention, feed rollers are rotatably installed on the inner walls on opposite sides of the discharge box, and a feed trough is provided on the outer surface of the feed roller. The storage barrel is connected with the filter box through the feed trough, and one end of the feed roller passes through the outer surface of the discharge box and is fixedly installed with a drive rod, and a second connecting rod is rotatably installed on the bottom end of the driving rod, and the other end of the crankshaft passes through the outer surface of the filter box and is fixedly installed with a second rotating plate, and the second connecting rod is rotatably installed with the other end of the second rotating plate.

[0010] As a further solution of the present invention, the other end of the blowing pipe passes through the outer surface of the filter box and is fixedly installed with a first rotating plate, the first rotating plate is rotatably installed with an end away from the blowing pipe, the other end of the first connecting rod is rotatably installed with the top end of the driving rod, and a guide pipe is fixedly installed on the upper surface of the filter box, one end of the guide pipe passes through the top wall of the filter box, and the other end of the guide pipe passes through the inner wall of the discharge box, and the blowing hole is connected to the discharge chute through the guide pipe.

[0011] As a further solution of the present invention, a mounting plate is fixedly installed on the inner wall of the storage barrel near the bottom end, a stirring shaft is rotatably installed on the upper surface of the mounting plate, two fixed plates are symmetrically fixedly installed on the circumferential outer surface of the stirring shaft, the two fixed plates are arranged in the middle position of the spiral condenser, and the outer surfaces of the two fixed plates on opposite sides are provided with dovetail grooves, and a plurality of dovetail sliders are slidably installed on the inner wall of the dovetail groove, and a cleaning ring is rotatably installed on the outer surface of the plurality of dovetail sliders near the spiral condenser, and the cleaning ring is sleeved on the outer surface of the spiral condenser.

[0012] As a further solution of the present invention, the bottom end of the stirring shaft passes through the lower surface of the mounting plate and is fixedly installed with a bevel gear, a rotating shaft is rotatably installed between the inner walls of the storage barrel near the bottom end, the outer surface of the rotating shaft is fixedly installed with the same bevel gear, the two bevel gears are meshed with each other, a transmission box is fixedly installed on the lower surface of the mounting plate, and the two bevel gears are arranged inside the transmission box.

[0013] As a further solution of the present invention, one end of the rotating shaft close to the driving motor passes through the outer surface of the storage barrel and is fixedly installed with a second pulley, and one end of the feeding roller close to the driving motor passes through the outer surface of the discharge box and is fixedly installed with a first pulley, and the outer surfaces of the first pulley and the second pulley are covered with belts.

[0014] A method for using a purification and filtration device for a polyphenylene sulfide melt comprises the following steps:

[0015] S1: When in use, a solvent mixed liquid containing polyphenylene sulfide is added into the storage barrel through the feed port, and external cold air enters into the storage barrel through the air inlet end of the spiral condenser tube, and the solvent mixed liquid containing polyphenylene sulfide is cooled by the spiral condenser tube;

[0016] S2: The crankshaft is driven by a driving motor to rotate, so that the crankshaft drives the curved neck to rotate eccentrically, and the curved neck drives the filter plate to reciprocate up and down through the moving rod, so as to screen and filter the polyphenylene sulfide solid and solvent mixed liquid falling from the chute;

[0017] S3: The crankshaft drives the second rotating plate to rotate eccentrically, so that the second rotating plate drives the driving rod to reciprocate through the second connecting rod, and the driving rod drives the feeding roller to reciprocate. Through the reciprocating rotation of the feeding roller, the material drop chute intermittently puts the mixed liquid inside the storage barrel into the upper surface of the filter plate;

[0018] S4: The first connecting rod is driven to reciprocate through the driving rod, and the first connecting rod drives the blowing pipe to reciprocate through the first rotating plate. When the blowing hole of the blowing pipe rotates to the top of the filter plate, the gas blown out through the spiral condenser will blow the polyphenylene sulfide solids accumulated on the surface of the filter plate into the collection tank. When the blowing hole of the blowing pipe rotates to the position of the guide pipe, the gas is blown into the inside of the blanking trough through the guide pipe to blow away the polyphenylene sulfide solids adhered to the inside of the blanking trough.

[0019] S5: The fixed plate is driven to reciprocate by the stirring shaft, and the fixed plate drives the cleaning ring to slide back and forth around the outer surface of the spiral condenser through the cooperation of the dovetail groove and the dovetail slider, so that the cleaning ring can clean the outer surface of the spiral condenser, so that the polyphenylene sulfide solids that are cooled and crystallized and adhered to the outer surface of the spiral condenser are removed.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The gas blown out through the spiral condenser will blow the polyphenylene sulfide solids accumulated on the surface of the filter plate into the collection tank. When the blowing hole of the blowing pipe rotates to the position of the guide pipe, the gas is blown into the inside of the blanking trough through the guide pipe, and the polyphenylene sulfide solids adhered to the inside of the blanking trough are blown away to avoid clogging the blanking trough. The device can blow away the polyphenylene sulfide solids accumulated on the surface of the filter plate to avoid clogging the filter plate by the crystallized polyphenylene sulfide solids, thereby ensuring the filtration speed and effect of the subsequent filter plates.

[0022] 2. The fixed plate drives the cleaning ring to slide back and forth around the outer surface of the spiral condenser through the cooperation of the dovetail groove and the dovetail slider, so that the cleaning ring can clean the outer surface of the spiral condenser, so that the polyphenylene sulfide solids that are cooled and crystallized and adhered to the outer surface of the spiral condenser are removed, avoiding the polyphenylene sulfide solids from affecting the cooling effect of the mixed liquid. The cleaning ring can be replaced regularly to ensure its cleaning effect.

[0023] 3. The crankshaft drives the second rotating plate to rotate eccentrically, so that the second rotating plate drives the driving rod to reciprocate through the second connecting rod, and the driving rod drives the feeding roller to reciprocate. Through the reciprocating rotation of the feeding roller, the blanking chute intermittently puts the mixed liquid inside the storage barrel into the upper surface of the filter plate to prevent excessive mixed liquid from accumulating on the upper surface of the filter plate and affecting the filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of a purification and filtration device for polyphenylene sulfide melt proposed by the present invention;

[0025] Figure 2 This is a rear structural schematic diagram of a purification and filtration device for polyphenylene sulfide melt proposed by the present invention;

[0026] Figure 3This is a schematic diagram of the internal structure of a purification and filtration device for polyphenylene sulfide melt proposed by the present invention;

[0027] Figure 4 A schematic diagram of a filter plate of a purification and filtering device for polyphenylene sulfide melt proposed by the present invention;

[0028] Figure 5 A schematic diagram of a spiral condenser of a purification and filtration device for polyphenylene sulfide melt proposed by the present invention;

[0029] Figure 6 A schematic diagram of an air blowing pipe of a purification and filtration device for a polyphenylene sulfide melt proposed by the present invention;

[0030] Figure 7 A schematic diagram of a cleaning cycle of a purification and filtering device for a polyphenylene sulfide melt proposed by the present invention;

[0031] Figure 8 The present invention provides a schematic diagram of a feed roller of a polyphenylene sulfide melt purification and filtration device.

[0032] In the figure: 1. storage barrel; 2. cover plate; 3. feed port; 4. filter box; 5. discharge pipe; 6. drive motor; 7. opening; 8. filter plate; 9. discharge box; 10. feed roller; 11. drive rod; 12. first connecting rod; 13. second connecting rod; 14. air blowing pipe; 15. first rotating plate; 16. crankshaft; 17. motion rod; 18. second rotating plate; 19. guide pipe; 20. curved neck; 21. first pulley; 22. belt; 23. second pulley; 24. hose; 25. dovetail slider; 26. rotary joint; 27. spiral condenser; 28. mounting plate; 29. ​​transmission box; 30. rotating shaft; 31. stirring shaft; 32. fixing plate; 33. cleaning ring; 34. bevel gear; 35. dovetail slide. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0034] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Reference Figure 1-Figure 8 A purification and filtering device for polyphenylene sulfide melt comprises a storage barrel 1 and a plurality of legs fixedly mounted on the bottom of the storage barrel 1, a discharge box 9 is fixedly mounted on the bottom of the storage barrel 1, a filter box 4 is fixedly mounted on the bottom end of the discharge box 9, an opening 7 is penetrated through the outer surface of one end of the filter box 4, the opening 7 is arranged near the bottom end of the filter box 4, a discharge pipe 5 is fixedly mounted on the outer surface of the other end of the filter box 4, a filter plate 8 is rotatably mounted on the inner wall of the opening 7, the filter plate 8 is tilted, and a blowing pipe 14 is rotatably mounted on the inner wall of the opposite sides of the filter box 4, the blowing pipe 14 is arranged above the filter plate 8, and the blowing pipe 14 is arranged on the upper side of the filter plate 8. A plurality of blowing holes are provided through the outer surface, a cover plate 2 is fixedly installed on the top of the storage barrel 1, a feed port 3 is provided through the upper surface of the cover plate 2, a spiral condenser 27 is fixedly installed on the lower surface of the cover plate 2, an air inlet end of the spiral condenser 27 passes through the upper surface of the cover plate 2, an air outlet end of the spiral condenser 27 passes through the outer surface of the storage barrel 1 and is fixedly connected with a hose 24, one end of the blowing pipe 14 passes through the outer surface of the filter box 4 and is fixedly installed with a rotary joint 26, the rotary joint 26 is fixedly connected to the other end of the hose 24, and the spiral condenser 27 is connected to the inside of the blowing pipe 14 through the hose 24 and the rotary joint 26.

[0037] When in use, a solvent mixed liquid containing polyphenylene sulfide is added to the interior of the storage barrel 1 through the feed port 3, and external cold air enters the interior through the air inlet end of the spiral condenser 27. The solvent mixed liquid of polyphenylene sulfide is cooled by the spiral condenser 27, so that the polyphenylene sulfide inside is recrystallized to form a polyphenylene sulfide solid. The present device facilitates the cooling and recrystallization of the solvent mixed liquid of polyphenylene sulfide into a mixture of polyphenylene sulfide solid, solvent and part of the metal salt solution. The first connecting rod 12 is driven to reciprocate by the driving rod 11, and the first connecting rod 12 drives the blowing pipe 14 to reciprocate through the first rotating plate 15. When the blowing hole of the blowing pipe 14 rotates to the top of the filter plate 8, the gas blown out by the spiral condenser 27 will blow the polyphenylene sulfide solid accumulated on the upper surface of the filter plate 8 into the collecting tank. The present device can blow away the polyphenylene sulfide solid accumulated on the surface of the filter plate 8, avoid clogging the filter plate 8 by the crystallized solid of polyphenylene sulfide, and ensure the subsequent filtering speed and effect of the filter plate 8.

[0038] In this embodiment, a crankshaft 16 is rotatably installed between the inner walls of the opposite sides of the filter box 4, a curved neck 20 is provided on the outer surface of the crankshaft 16, a moving rod 17 is rotatably installed between the inner walls of the curved neck 20, the top end of the moving rod 17 is rotatably installed with the lower surface of the filter plate 8, and a drive motor 6 is fixedly installed on the outer surface of the filter box 4 close to the rotary joint 26, and the output end of the drive motor 6 passes through the outer surface of the filter box 4 and is fixedly installed with the rotation center of the crankshaft 16.

[0039] Then, the crankshaft 16 is driven to rotate by the driving motor 6, so that the crankshaft 16 drives the curved neck 20 to rotate eccentrically, and the curved neck 20 drives the filter plate 8 to reciprocate up and down through the moving rod 17, so that the polyphenylene sulfide solid and the solvent mixture falling from the drop trough are screened and filtered, so that the polyphenylene sulfide solid slides from the opening 7 along the surface of the filter plate 8 to the collection trough below, and the filtered liquid falls into the collection barrel through the discharge pipe 5. The present device is convenient for screening and filtering the polyphenylene sulfide solid and the solvent mixture.

[0040] In this embodiment, feed rollers 10 are rotatably installed on the inner walls of the opposite sides of the discharge box 9, and a feeding groove is penetrated through the outer surface of the feed roller 10. The storage barrel 1 is connected with the filter box 4 through the feeding groove. One end of the feed roller 10 passes through the outer surface of the discharge box 9 and is fixedly installed with a driving rod 11. The bottom end of the driving rod 11 is rotatably installed with a second connecting rod 13. The other end of the crankshaft 16 passes through the outer surface of the filter box 4 and is fixedly installed with a second rotating plate 18. The second connecting rod 13 is rotatably installed with the other end of the second rotating plate 18.

[0041] The crankshaft 16 drives the second rotating plate 18 to rotate eccentrically, so that the second rotating plate 18 drives the driving rod 11 to reciprocate through the second connecting rod 13, and the driving rod 11 drives the feeding roller 10 to rotate reciprocatingly. Through the reciprocating rotation of the feeding roller 10, the blanking chute intermittently puts the mixed liquid inside the storage barrel 1 into the upper surface of the filter plate 8 to prevent excessive mixed liquid from accumulating on the upper surface of the filter plate 8 and affecting the filtering effect.

[0042] In this embodiment, the other end of the blowing pipe 14 passes through the outer surface of the filter box 4 and is fixedly installed with a first rotating plate 15. The first rotating plate 15 is rotatably installed with the first connecting rod 12 at one end away from the blowing pipe 14. The other end of the first connecting rod 12 is rotatably installed with the top end of the driving rod 11. A guide pipe 19 is fixedly installed on the upper surface of the filter box 4. One end of the guide pipe 19 passes through the top wall of the filter box 4, and the other end of the guide pipe 19 passes through the inner wall of the discharge box 9. The blowing hole is connected to the discharge chute through the guide pipe 19.

[0043] When the blowing hole of the blowing pipe 14 rotates to the position of the guide pipe 19, the gas is blown into the inside of the blanking trough through the guide pipe 19 to blow away the polyphenylene sulfide solids adhered to the inside of the blanking trough to avoid clogging the blanking trough.

[0044] In this embodiment, a mounting plate 28 is fixedly installed on the inner wall of the storage barrel 1 near the bottom end, and a stirring shaft 31 is rotatably installed on the upper surface of the mounting plate 28. Two fixing plates 32 are symmetrically fixedly installed on the circumferential outer surface of the stirring shaft 31. The two fixing plates 32 are arranged in the middle position of the spiral condenser tube 27. The outer surfaces of the opposite sides of the two fixing plates 32 are provided with dovetail grooves 35. A plurality of dovetail sliders 25 are slidably installed on the inner wall of the dovetail groove 35. A cleaning ring 33 is rotatably installed on the outer surface of the plurality of dovetail sliders 25 near the spiral condenser tube 27. The cleaning ring 33 is sleeved on the outer surface of the spiral condenser tube 27. The bottom end of the stirring shaft 31 passes through the mounting plate A bevel gear 34 is fixedly installed on the lower surface of 28, and a rotating shaft 30 is rotatably installed between the inner wall of the storage barrel 1 near the bottom end, and the outer surface of the rotating shaft 30 is fixedly installed with the same bevel gear 34. The two bevel gears 34 are meshed with each other. A transmission box 29 is fixedly installed on the lower surface of the mounting plate 28, and the two bevel gears 34 are arranged inside the transmission box 29. The end of the rotating shaft 30 close to the driving motor 6 passes through the outer surface of the storage barrel 1 and is fixedly installed with a second pulley 23. The end of the feeding roller 10 close to the driving motor 6 passes through the outer surface of the discharge box 9 and is fixedly installed with a first pulley 21. The outer surfaces of the first pulley 21 and the second pulley 23 are sleeved with belts 22.

[0045] The reciprocating rotation of the feed roller 10 drives the first pulley 21 to rotate reciprocatingly, and the first pulley 21 drives the second pulley 23 to rotate through the belt 22, so that the second pulley 23 drives the rotating shaft 30 to rotate forward and reversely, and drives one of the bevel gears 34 to rotate through the rotating shaft 30, and the bevel gear 34 drives the stirring shaft 31 to rotate forward and reversely through another bevel gear 34, and the stirring shaft 31 drives the fixed plate 32 to reciprocate, and the fixed plate 32 drives the cleaning ring 33 to slide back and forth around the outer surface of the spiral condenser 27 through the cooperation of the dovetail groove 35 and the dovetail slider 25, so that the cleaning ring 33 can clean the outer surface of the spiral condenser 27, so that the polyphenylene sulfide solids that are cooled and crystallized and adhered to the outer surface of the spiral condenser 27 are removed, so as to avoid the polyphenylene sulfide solids affecting the cooling effect of the mixed liquid, and the cleaning ring 33 can be replaced regularly to ensure its cleaning effect.

[0046] In this embodiment, the solvent may be a polar solvent that is insoluble in water and has a polarity less than that of water, such as chloronaphthalene.

[0047] A method for using a purification and filtration device for a polyphenylene sulfide melt comprises the following steps:

[0048] S1: When in use, a solvent mixed liquid containing polyphenylene sulfide is added into the storage barrel 1 through the feed port 3, and external cold air enters into the storage barrel 1 through the air inlet end of the spiral condenser 27, and the solvent mixed liquid containing polyphenylene sulfide is cooled by the spiral condenser 27;

[0049] S2: The crankshaft 16 is driven to rotate by the driving motor 6, so that the crankshaft 16 drives the curved neck 20 to rotate eccentrically, and the curved neck 20 drives the filter plate 8 to reciprocate up and down through the moving rod 17, so as to screen and filter the polyphenylene sulfide solid and solvent mixed liquid falling from the chute;

[0050] S3: The crankshaft 16 drives the second rotating plate 18 to rotate eccentrically, so that the second rotating plate 18 drives the driving rod 11 to reciprocate through the second connecting rod 13, and the driving rod 11 drives the feeding roller 10 to reciprocate. Through the reciprocating rotation of the feeding roller 10, the material drop chute intermittently puts the mixed liquid inside the storage barrel 1 into the upper surface of the filter plate 8;

[0051] S4: The first connecting rod 12 is driven to reciprocate through the driving rod 11, and the first connecting rod 12 drives the blowing pipe 14 to reciprocate through the first rotating plate 15. When the blowing hole of the blowing pipe 14 rotates to the top of the filter plate 8, the gas blown out through the spiral condenser 27 will blow the polyphenylene sulfide solids accumulated on the upper surface of the filter plate 8 into the collection tank. When the blowing hole of the blowing pipe 14 rotates to the position of the guide pipe 19, the gas is blown into the inside of the blanking trough through the guide pipe 19 to blow away the polyphenylene sulfide solids adhered to the inside of the blanking trough;

[0052] S5: The fixing plate 32 is driven to reciprocate by the stirring shaft 31, and the fixing plate 32 drives the cleaning ring 33 to slide back and forth around the outer surface of the spiral condenser 27 through the cooperation of the dovetail groove 35 and the dovetail slider 25, so that the cleaning ring 33 can clean the outer surface of the spiral condenser 27, so that the polyphenylene sulfide solids that are cooled and crystallized and adhered to the outer surface of the spiral condenser 27 are removed.

[0053] It should be noted that, when the present invention is used, a solvent mixed liquid containing polyphenylene sulfide is added to the interior of the storage barrel 1 through the feed port 3, and external cold air enters the interior through the air inlet end of the spiral condenser 27, and the polyphenylene sulfide solvent mixed liquid is cooled by the spiral condenser 27, so that the polyphenylene sulfide inside is recrystallized to form a polyphenylene sulfide solid. The present device facilitates the cooling and recrystallization of the polyphenylene sulfide solvent mixed liquid into a mixture of polyphenylene sulfide solid, solvent and part of the metal salt solution; then, the crankshaft 16 is driven to rotate by the driving motor 6, so that the crankshaft 16 drives the curved neck 20 to rotate eccentrically, and the curved neck 20 drives the filter plate 8 to reciprocate up and down through the moving rod 17, so that the polyphenylene sulfide solid and the solvent mixed liquid falling from the drop chute are cooled and recrystallized. The liquid is screened and filtered, so that the polyphenylene sulfide solid slides from the opening 7 along the surface of the filter plate 8 to the collection tank below, and the filtered liquid falls into the collection bucket through the discharge pipe 5. The device is convenient for screening and filtering the polyphenylene sulfide solid and solvent mixed liquid; the second rotating plate 18 is driven to rotate eccentrically by the crankshaft 16, so that the second rotating plate 18 drives the driving rod 11 to reciprocate through the second connecting rod 13, and the driving rod 11 drives the feeding roller 10 to reciprocate. Through the reciprocating rotation of the feeding roller 10, the blanking chute intermittently puts the mixed liquid inside the storage barrel 1 into the upper surface of the filter plate 8 to prevent excessive mixed liquid from accumulating on the upper surface of the filter plate 8 and affecting the filtering effect; at the same time, the first connecting rod 12 is driven to reciprocate through the driving rod 11. The first connecting rod 12 drives the blowing pipe 14 to rotate reciprocatingly through the first rotating plate 15. When the blowing hole of the blowing pipe 14 rotates to the top of the filter plate 8, the gas blown out through the spiral condenser 27 will blow the polyphenylene sulfide solids accumulated on the surface of the filter plate 8 into the collection tank. When the blowing hole of the blowing pipe 14 rotates to the position of the guide pipe 19, the gas is blown into the inside of the blanking trough through the guide pipe 19 to blow away the polyphenylene sulfide solids adhered to the inside of the blanking trough to avoid clogging the blanking trough. The device can blow away the polyphenylene sulfide solids accumulated on the surface of the filter plate 8 to avoid clogging the filter plate 8 by the crystallized polyphenylene sulfide solids, thereby ensuring the subsequent filtering speed and effect of the filter plate 8. The reciprocating rotation of the feeding roller 10 drives the first pulley 21 to rotate reciprocatingly. The first pulley 21 drives the second pulley 23 to rotate through the belt 22, so that the second pulley 23 drives the rotating shaft 30 to rotate forward and reversely, and drives one of the bevel gears 34 to rotate through the rotating shaft 30. The bevel gear 34 drives the stirring shaft 31 to rotate forward and reversely through another bevel gear 34. The stirring shaft 31 drives the fixed plate 32 to reciprocate. The fixed plate 32 drives the cleaning ring 33 to slide back and forth around the outer surface of the spiral condenser 27 through the cooperation of the dovetail groove 35 and the dovetail slider 25, so that the cleaning ring 33 can clean the outer surface of the spiral condenser 27, so that the polyphenylene sulfide solids that are cooled and crystallized and adhered to the outer surface of the spiral condenser 27 are removed, so as to avoid the polyphenylene sulfide solids affecting the cooling effect of the mixed liquid. The cleaning ring 33 can be replaced regularly to ensure its cleaning effect.

[0054] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A purification and filtration device for polyphenylene sulfide melt, comprising a storage barrel (1) and a plurality of legs fixedly mounted on the bottom of the storage barrel (1), characterized in that: A discharge box (9) is fixedly mounted on the bottom of the material storage barrel (1), a filter box (4) is fixedly mounted on the bottom end of the discharge box (9), an opening (7) is penetrated through the outer surface of one end of the filter box (4), the opening (7) is arranged at a position close to the bottom end of the filter box (4), a discharge pipe (5) is fixedly mounted on the outer surface of the other end of the filter box (4), a filter plate (8) is rotatably mounted on the inner wall of the opening (7), the filter plate (8) is arranged tilted, an air blowing pipe (14) is rotatably mounted on the inner walls of opposite sides of the filter box (4), the air blowing pipe (14) is arranged above the filter plate (8), a plurality of air blowing holes are penetrated through the outer surface of the air blowing pipe (14), and the material storage barrel (1) is provided with a plurality of air blowing holes. 1) is fixedly installed with a cover plate (2) on the top, a feed port (3) is formed through the upper surface of the cover plate (2), a spiral condenser (27) is fixedly installed on the lower surface of the cover plate (2), an air inlet end of the spiral condenser (27) passes through the upper surface of the cover plate (2), an air outlet end of the spiral condenser (27) passes through the outer surface of the storage barrel (1) and is fixedly connected with a hose (24), one end of the air blowing pipe (14) passes through the outer surface of the filter box (4) and is fixedly installed with a rotary joint (26), the rotary joint (26) is fixedly connected to the other end of the hose (24), and the spiral condenser (27) is connected to the inside of the air blowing pipe (14) through the hose (24) and the rotary joint (26).

2. The purification and filtration device for polyphenylene sulfide melt according to claim 1, characterized in that: A crankshaft (16) is rotatably mounted between inner walls on opposite sides of the filter box (4); a curved neck (20) is provided on the outer surface of the crankshaft (16); a moving rod (17) is rotatably mounted between the inner walls of the curved neck (20); the top end of the moving rod (17) is rotatably mounted on the lower surface of the filter plate (8); a driving motor (6) is fixedly mounted on the outer surface of the filter box (4) on the side close to the rotary joint (26); the output end of the driving motor (6) passes through the outer surface of the filter box (4) and is fixedly mounted at the rotation center of the crankshaft (16).

3. The purification and filtration device for polyphenylene sulfide melt according to claim 2, characterized in that: Feed rollers (10) are rotatably mounted on the inner walls of the opposite sides of the discharge box (9); a feeding groove is formed through the outer surface of the feed roller (10); the storage barrel (1) is connected to the filter box (4) through the feeding groove; one end of the feed roller (10) passes through the outer surface of the discharge box (9) and is fixedly mounted with a driving rod (11); a second connecting rod (13) is rotatably mounted on the bottom end of the driving rod (11); the other end of the crankshaft (16) passes through the outer surface of the filter box (4) and is fixedly mounted with a second rotating plate (18); the second connecting rod (13) is rotatably mounted on the other end of the second rotating plate (18).

4. The purification and filtration device for polyphenylene sulfide melt according to claim 3, characterized in that: The other end of the air blowing pipe (14) passes through the outer surface of the filter box (4) and is fixedly mounted with a first rotating plate (15); the first rotating plate (15) is rotatably mounted with a first connecting rod (12) at one end away from the air blowing pipe (14); the other end of the first connecting rod (12) is rotatably mounted with the top end of the driving rod (11); a guide pipe (19) is fixedly mounted on the upper surface of the filter box (4); one end of the guide pipe (19) passes through the top wall of the filter box (4); the other end of the guide pipe (19) passes through the inner wall of the discharge box (9); and the air blowing hole is connected to the discharge chute via the guide pipe (19).

5. The purification and filtration device for polyphenylene sulfide melt according to claim 4, characterized in that: A mounting plate (28) is fixedly installed on the inner wall of the storage barrel (1) near the bottom end, and a stirring shaft (31) is rotatably installed on the upper surface of the mounting plate (28). Two fixed plates (32) are symmetrically fixedly installed on the circumferential outer surface of the stirring shaft (31). The two fixed plates (32) are arranged at the middle position of the spiral condenser (27). The outer surfaces of the two fixed plates (32) on the opposite sides are provided with dovetail grooves (35). A plurality of dovetail sliders (25) are slidably installed on the inner wall of the dovetail groove (35). A cleaning ring (33) is rotatably installed on the outer surface of the plurality of dovetail sliders (25) near the spiral condenser (27). The cleaning ring (33) is sleeved on the outer surface of the spiral condenser (27).

6. The purification and filtration device for polyphenylene sulfide melt according to claim 5, characterized in that: The bottom end of the stirring shaft (31) passes through the lower surface of the mounting plate (28) and is fixedly mounted with a bevel gear (34); a rotating shaft (30) is rotatably mounted between the inner wall of the storage barrel (1) near the bottom end; the outer surface of the rotating shaft (30) is fixedly mounted with the same bevel gear (34); the two bevel gears (34) are meshed with each other; a transmission box (29) is fixedly mounted on the lower surface of the mounting plate (28); the two bevel gears (34) are arranged inside the transmission box (29).

7. The purification and filtration device for polyphenylene sulfide melt according to claim 6, characterized in that: The end of the rotating shaft (30) close to the driving motor (6) passes through the outer surface of the material storage barrel (1) and is fixedly mounted with a second pulley (23); the end of the feeding roller (10) close to the driving motor (6) passes through the outer surface of the material discharge box (9) and is fixedly mounted with a first pulley (21); the outer surfaces of the first pulley (21) and the second pulley (23) are sleeved with belts (22).

8. A method for using a purification and filtration device for a polyphenylene sulfide melt, characterized in that: A purification and filtration device for a polyphenylene sulfide melt according to any one of claims 1 to 7 comprises the following steps: S1: When in use, a solvent mixed liquid containing polyphenylene sulfide is added into the interior of the storage barrel (1) through the feed port (3), and external cold air enters into the interior through the air inlet end of the spiral condenser (27), and the temperature of the solvent mixed liquid containing polyphenylene sulfide is reduced through the spiral condenser (27); S2: The crankshaft (16) is driven to rotate by a driving motor (6), so that the crankshaft (16) drives the curved neck (20) to rotate eccentrically, and the curved neck (20) drives the filter plate (8) to reciprocate up and down through the moving rod (17), so as to screen and filter the polyphenylene sulfide solid and solvent mixed liquid falling from the drop chute; S3: The crankshaft (16) drives the second rotating plate (18) to rotate eccentrically, so that the second rotating plate (18) drives the driving rod (11) to reciprocate through the second connecting rod (13), and the driving rod (11) drives the feeding roller (10) to rotate reciprocatingly. Through the reciprocating rotation of the feeding roller (10), the material dropping chute intermittently puts the mixed liquid inside the storage barrel (1) into the upper surface of the filter plate (8); S4: The first connecting rod (12) is driven to reciprocate through the driving rod (11), and the first connecting rod (12) drives the blowing pipe (14) to reciprocate through the first rotating plate (15). When the blowing hole of the blowing pipe (14) rotates to the top of the filter plate (8), the gas blown out through the spiral condenser (27) will blow the polyphenylene sulfide solids accumulated on the upper surface of the filter plate (8) into the collection tank. When the blowing hole of the blowing pipe (14) rotates to the position of the guide pipe (19), the gas is blown into the interior of the blanking trough through the guide pipe (19), and the polyphenylene sulfide solids adhered to the interior of the blanking trough are blown away. S5: The fixed plate (32) is driven to reciprocate by the stirring shaft (31), and the fixed plate (32) drives the cleaning ring (33) to slide back and forth around the outer surface of the spiral condenser (27) through the cooperation of the dovetail groove (35) and the dovetail slider (25), so that the cleaning ring (33) can clean the outer surface of the spiral condenser (27), so that the polyphenylene sulfide solids that are cooled and crystallized and adhered to the outer surface of the spiral condenser (27) are removed.

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