A water washing and drying device for polyarylene ether nitrile production

Abstract

A washing and drying device for the production of polyarylene ether nitrile (PEN) particles, relating to the field of PEN raw material production, includes a washing mechanism and a drying mechanism. The washing mechanism includes a washing tank and a circulating washing assembly. The washing tank is equipped with a gas protection assembly for introducing protective gas into the tank. The circulating washing assembly is used for circulating washing of the PEN particles. The drying mechanism includes a drying chamber located at the product outlet of the washing tank, and a blower is installed on the drying chamber. In this invention, the washing and drying device for PEN particle production uses a circulating washing assembly within the washing tank to mix PEN particles with the washing liquid and then circulate the washing solution. This ensures full contact between the PEN surface and the washing liquid, allowing for thorough and rapid washing of impurities on the PEN surface, reducing the washing process and increasing the utilization rate of the washing liquid. The washing PEN particles are then dried by the drying mechanism to obtain an ultra-high purity PEN product.

Description

Technical Field

[0001] This invention relates to the field of polyarylene ether nitrile raw material production technology, and in particular to a water washing and drying device for the production of polyarylene ether nitrile. Background Technology

[0002] Polyarylene ether nitrile (PEN) is a high-performance thermoplastic engineering plastic. Its molecular backbone is mainly composed of aromatic rings, ether bonds (-O-), and nitrile bonds (-CN). The aromatic rings impart good rigidity and thermal stability, the ether bonds increase the flexibility of the molecular chain, and the nitrile bonds help improve the material's chemical resistance and strength. This unique structural combination gives PEN a variety of excellent properties. The washing process is crucial in the processing and application of PEN. After molding, PEN products often have residual processing aids, dust, impurities, and other contaminants on their surface. These residues can affect the appearance, surface properties, and subsequent performance of the product.

[0003] With technological advancements, the purity requirements for PEN products are becoming increasingly stringent, especially in high-end fields such as electronics and aerospace. Traditional cleaning methods may not be effective in removing contaminants. To improve the purity of PEN products, current washing processes require multiple rinsing and filtration processes using a filter, which is cumbersome and wastes a significant amount of washing solution. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, the purpose of this invention is to provide a water washing and drying device for the production of polyarylether nitrile, which reduces the water washing process and improves the utilization rate of the washing liquid.

[0006] To achieve the above objectives, this invention proposes a water washing and drying device for the production of polyarylether nitrile, comprising a water washing mechanism and a drying mechanism. The water washing mechanism includes a water washing tank and a circulating water washing assembly. The water washing tank is equipped with a gas protection assembly for introducing protective gas into the tank. The top of the water washing tank has a feed inlet and a washing liquid outlet. The circulating water washing assembly is used for circulating water washing of the polyarylether nitrile product. The circulating water washing assembly includes a circulation pipe and circulation fan blades. A filter screen is installed inside the water washing tank. The circulation pipe is vertically inserted through the inner side of the filter screen, and the circulation fan blades are rotatably mounted inside the circulation pipe. The drying mechanism includes a drying chamber located at the product outlet end of the water washing tank, and a blower is installed on the drying chamber.

[0007] Furthermore, a scraping assembly is provided on the upper surface of the filter screen, wherein the scraping assembly includes scraping blades and a water guide plate, wherein the top discharge end of the circulation pipe is flush with the upper surface of the filter screen, the water guide plate is rotatably disposed above the discharge end of the circulation pipe, and the plane of the water guide plate is perpendicular to the water outlet direction of the circulation pipe, and the scraping blades are disposed on the rotating edge of the water guide plate.

[0008] Furthermore, a brush is provided at the bottom of the scraper blade, the brush is in contact with the filter screen, the scraper blade has an arc-shaped structure, and a second drive motor is provided above the scraper blade, the second drive motor being connected to the scraper blade.

[0009] Furthermore, a suction port is provided at the bottom of the circulation pipe, and a first drive motor for driving the circulation fan blades to rotate is provided at the bottom of the washing tank.

[0010] Furthermore, the washing tank is divided into a filter tank and a return tank by a filter screen. The feed inlet and the washing liquid outlet are located at the top of the filter tank, and the washing liquid outlet is provided at the bottom of the return tank. The air protection assembly includes a first air inlet valve and a second air inlet valve. The first air inlet valve is located at the top of the filter tank, and a first exhaust valve is located at the top of the filter tank. The second air inlet valve is located at the top of the return tank, and a second exhaust valve is located at the top of the return tank. Both the first exhaust valve and the second exhaust valve have pressure limiting valves at their outlet ends.

[0011] Furthermore, the product discharge end of the washing tank is provided with a solid material outlet, the solid material outlet is on the same plane as the filter screen, the discharge end of the solid material outlet is provided with a control valve, and a sealed bearing is provided at the connection between the drying tank and the control valve.

[0012] Furthermore, the drying chamber is equipped with a drying assembly, which includes a fixed cylinder, stirring blades, and a stirring motor. The fixed cylinder is located inside the drying chamber, the stirring blades are rotatably located inside the fixed cylinder, the power shaft of the stirring motor is connected to the stirring blades, and a grate plate is provided at the bottom of the fixed cylinder.

[0013] Furthermore, the top of the drying chamber is provided with a dry material outlet, the dry material outlet is provided with a discharge valve plate, the discharge valve plate is provided with a discharge valve plate controller, the bottom of the drying chamber is provided with a water outlet, the inside of the water outlet is provided with a negative pressure pump, and the air outlet end of the blower is provided with a heater.

[0014] Furthermore, a drying box support is provided below the drying box, the drying box support is rotatably connected to the drying box, a rotary motor is provided on the drying box support to drive the drying box to adjust its working angle, and a receiving box is provided at the bottom of the drying box support.

[0015] Furthermore, the feed inlet is provided with a feed valve plate, and the feed valve plate is provided with a feed valve plate controller.

[0016] Beneficial effects: This invention uses a circulating water washing component in a washing tank to mix PEN product particles with the washing liquid and then circulate the water for washing. The PEN surface is fully in contact with the washing liquid, which thoroughly and quickly washes away impurities on the PEN surface, reducing the washing process and improving the utilization rate of the washing liquid. Then, the PEN particles are dried by a drying mechanism to obtain ultra-high purity PEN products.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the overall structure of a water washing and drying apparatus for the production of polyarylether nitrile according to an embodiment of the present invention; Figure 2 This is a partial structural schematic diagram of a water washing and drying apparatus for the production of polyarylether nitrile according to an embodiment of the present invention; Figure 3 This is a front view of a water washing and drying apparatus for the production of polyarylether nitrile according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of a water washing and drying apparatus for the production of polyarylene ether nitrile according to an embodiment of the present invention, from another perspective. Figure 5 This is a front cross-sectional view of a water washing and drying apparatus for the production of polyarylether nitrile according to an embodiment of the present invention; Figure 6 This is a partial structural schematic diagram of the scraping assembly in a water washing and drying apparatus for the production of polyarylether nitrile according to an embodiment of the present invention.

[0019] In the diagram: 1. Washing mechanism; 11. Washing tank; 1101. Washing liquid outlet; 1102. Filter box; 1103. Return box; 12. Air protection assembly; 121. First air inlet valve; 122. Second air inlet valve; 123. First exhaust valve; 124. Pressure limiting valve; 125. Second exhaust valve; 13. Feed inlet; 131. Feed valve plate; 132. Feed valve plate controller; 14. Washing liquid outlet; 15. Support base; 16. Solid material outlet; 17. Control valve; 18. Circulating washing assembly; 181. First drive motor; 182. Circulating fan blade; 183. Circulation pipe; 184. Suction port; 19. Scraper assembly; 191. 2. Drive motor; 192. Drive rod; 193. Scraper blade; 194. Filter screen; 195. Filter screen support; 196. Water guide plate; 197. Conical guide head; 2. Drying mechanism; 21. Dry material outlet; 211. Discharge valve plate controller; 212. Discharge valve plate; 22. Blower; 221. Heater; 23. Guide hopper; 24. Angle motor; 25. Drying box; 251. Sealed bearing; 252. Balance block; 252. Water outlet; 253. Negative pressure pump; 26. Drying box support; 27. Receiving box; 28. Drying assembly; 281. Fixed cylinder; 282. Stirring blade; 283. Grate plate; 284. Stirring motor. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0021] The following description, in conjunction with the accompanying drawings, describes a water washing and drying apparatus for the production of polyaryletheronitrile according to an embodiment of the present invention.

[0022] like Figures 2-5 As shown, the water washing and drying equipment for the production of polyarylether nitrile provided in this embodiment of the invention includes a water washing mechanism 1 and a drying mechanism 2.

[0023] The washing mechanism 1 includes a washing tank 11 and a circulating washing assembly 18. The bottom of the washing tank 11 is provided with a support base 15, and the washing tank 11 is provided with a gas protection assembly 12. The gas protection assembly 12 is used to introduce protective gas into the washing tank 11. The top of the washing tank 11 is provided with a feed inlet 13 and a washing liquid outlet 14.

[0024] The circulating water washing assembly 18 is used to circulate water to wash polyarylether nitrile products. The circulating water washing assembly 18 includes a circulating pipe 183 and a circulating fan blade 182. A filter screen 194 is provided inside the washing tank 11, and a filter screen support 195 is provided at the bottom of the filter screen 194. The circulating pipe 183 is vertically inserted through the filter screen 194 and is arranged inside the circulating pipe 183. A suction port 184 is provided at the bottom of the circulating pipe 183. A first drive motor 181 is provided at the bottom of the washing tank 11 to drive the circulating fan blade 182 to rotate.

[0025] The drying mechanism 2 includes a drying box 25 located at the product discharge end of the washing box 11, and a blower 22 is installed on the drying box 25.

[0026] Specifically, in the process of washing polyarylether nitrile (PEN), the PEN product is first fed into the washing tank 11 through the feed port 13 at the top of the washing tank 11. The PEN falls onto the filter screen 194. At the same time, the washing liquid is injected into the washing tank 11 through the washing liquid port 14. The washing liquid dissolves and adsorbs the impurities on the surface of the PEN. Then, the washing liquid enters the bottom of the washing tank 11 through the filter screen 194. The first drive motor 181 drives the circulating fan blade 182 to rotate, which draws the washing liquid below the filter screen 194 back into the circulation pipe 183. The washing liquid is then sent back to the top of the filter screen 194 through the circulation pipe 183 to wash the PEN again, reducing the washing process and improving the utilization rate of the washing liquid.

[0027] The washed PEN products are then sent into drying chamber 25, dried in drying chamber 25, and then exported, completing the washing and drying process of PEN.

[0028] In one embodiment of the present invention, such as Figure 5 and Figure 6 As shown, a scraping assembly 19 is provided on the upper surface of the filter screen 194. The scraping assembly 19 includes scraping blades 193 and a water guide plate 196. The top discharge end of the circulation pipe 183 is flush with the upper surface of the filter screen 194. The water guide plate 196 is rotatably disposed above the discharge end of the circulation pipe 183, and the plane of the water guide plate 196 is perpendicular to the water outlet direction of the circulation pipe 183. A conical guide head 197 is provided at the bottom middle position of the water guide plate 196 so that the water flow is evenly discharged from the edge of the water guide plate 196. The scraping blades 193 are disposed on the rotating edge of the water guide plate 196.

[0029] Specifically, to reduce the prolonged adsorption of PEN particles on the surface of filter screen 194 during the PEN washing process, the scraper blades 193 rotate to scrape the PEN particles adsorbed on the filter screen 194 and transport them upwards, allowing the PEN particles to re-integrate into the washing liquid above the filter screen 194. This reduces clogging caused by prolonged adsorption of PEN particles on the filter screen 194 and improves the permeability of the filter screen 194. Furthermore, during the upward transport of the washing liquid through the circulation pipe 183, it enters the surface of the filter screen 194 horizontally after passing through the guide plate 196, creating a lateral sweeping effect on the PEN particles on the filter screen 194 and reducing residue on the surface of the filter screen 194.

[0030] In one embodiment of the present invention, such as Figure 5 and Figure 6 As shown, a brush is provided at the bottom of the scraper blade 193, and the brush is in contact with the filter screen 194. The scraper blade 193 has an arc-shaped structure, and a second drive motor 191 is provided above the scraper blade 193. The second drive motor 191 is connected to the scraper blade 193.

[0031] Specifically, during the process of rotating the scraper blade 193 driven by the second drive motor 191, the spiral-shaped scraper blade 193 causes the PEN particles on the surface of the filter screen 194 to form a centrifugal effect, reducing the residue of PEN particles on the filter screen 194. In addition, after washing, the spiral-shaped scraper blade 193 can transfer the PEN particles on the filter screen 194 to the solid material outlet 16 by centrifugal action, so that the PEN particles are transferred to the drying oven 25 for drying.

[0032] In one embodiment of the present invention, such as Figures 2-5 As shown, the washing tank 11 is divided into a filter tank 1102 and a return tank 1103 by a filter screen 194. The feed inlet 13 and the washing liquid outlet 14 are located at the top of the filter tank 1102, and the bottom of the return tank 1103 is provided with a washing liquid outlet 1101.

[0033] The air protection assembly 12 includes a first air intake valve 121 and a second air intake valve 122. The first air intake valve 121 is located on the top of the filter box 1102, and a first exhaust valve 123 is located on the top of the filter box 1102. The second air intake valve 122 is located on the top of the return box 1103, and a second exhaust valve 125 is located on the top of the return box 1103. Both the first exhaust valve 123 and the second exhaust valve 125 are provided with pressure limiting valves 124 at their outlet ends.

[0034] Specifically, before and during water washing, nitrogen or other inert gases are connected through the first inlet valve 121 and the second inlet valve 122. The inert gas is introduced into the water washing tank 11 to protect the water washing environment and prevent oxidation of the washing liquid and PEN particles during the water washing process. Exhaust gas is discharged from the first exhaust valve 123 and the second exhaust valve 125.

[0035] Furthermore, by adjusting the exhaust pressure of the pressure limiting valve 124, the air pressure in the filter box 1102 and the return box 1103 can be adjusted, thereby regulating the pressure difference between the upper and lower sides of the filter screen 194. For example, by increasing the pressure of the upper pressure limit valve 124 of the first exhaust valve 123 and decreasing the pressure of the upper pressure limit valve 124 of the second exhaust valve 125, the downward penetration rate of the washing liquid can be accelerated, increasing the washing speed. As another example, by decreasing the pressure of the upper pressure limit valve 124 of the first exhaust valve 123 and increasing the pressure of the upper pressure limit valve 124 of the second exhaust valve 125, the gas at the bottom of the filter screen 194 will permeate upwards, effectively blowing and cleaning impurities inside the filter screen 194 upwards.

[0036] In one embodiment of the present invention, such as Figures 2-5 As shown, the product discharge end of the washing tank 11 is provided with a solid material outlet 16. The solid material outlet 16 and the filter screen 194 are on the same plane. The discharge end of the solid material outlet 16 is provided with a control valve 17. A sealed bearing 251 is provided at the connection between the drying box 25 and the control valve 17.

[0037] Specifically, after the PEN is washed with water, the circulating fan blade 182 first stops rotating and discharges the washing liquid through the washing liquid outlet 1101. Then, a small amount of washing liquid is injected again through the washing liquid port 14 at the top of the washing tank 11 to mix and transfer the PEN into the drying chamber 25. Subsequently, the control valve 17 is opened, and the scraper blade 193 mixes the PEN and washing liquid and sends it into the solid material outlet 16. The solid material outlet 16 sends the PEN into the drying chamber 25 through the sealed bearing 251.

[0038] In one embodiment of the present invention, such as Figures 2-5 As shown, the drying chamber 25 is equipped with a drying assembly 28, which includes a fixed cylinder 281, stirring blades 282, and stirring motor 284. The fixed cylinder 281 is located inside the drying chamber 25, the stirring blades 282 are rotatably located inside the fixed cylinder 281, the power shaft of the stirring motor 284 is connected to the stirring blades 282, a grate plate 283 is provided at the bottom of the fixed cylinder 281, a water outlet 252 is provided at the bottom of the drying chamber 25, and guide buckets 23 are provided at the connection between the water outlet 252, the dry material outlet 21 and the drying chamber 25. A heater 221 is provided at the air outlet of the blower 22.

[0039] Specifically, after the PEN and washing liquid enter the drying chamber 25 together, they first enter the fixed cylinder 281. The washing liquid flows out through the bottom grate plate 283 to the water outlet 252 at the bottom of the drying chamber 25, and is quickly transferred out by the negative pressure pump 253 in the water outlet 252.

[0040] The PEN granules then remain in the fixed cylinder 281. The stirring motor 284 drives the stirring blades 282 inside the fixed cylinder 281 to rotate, stirring the PEN granules in the fixed cylinder 281 to prevent clumping and to accelerate the passage of air from the blower 22 through the fixed cylinder 281, thus rapidly drying the PEN. During the drying process, the air inlet of the blower 22 is connected to an inertia protector, and the protective gas is heated by the heater 221 to form a hot airflow. After passing through the fixed cylinder 281, the hot airflow is transferred out by the negative pressure pump 253, rapidly drying the PEN in the fixed cylinder 281.

[0041] In one embodiment of the present invention, such as Figures 2-5 As shown, the top of the drying chamber 25 is provided with a dry material outlet 21, the dry material outlet 21 is provided with a discharge valve plate 212, the discharge valve plate 212 is provided with a discharge valve plate controller 211, the inlet 13 is provided with an inlet valve plate 131, and the inlet valve plate 131 is provided with an inlet valve plate controller 132.

[0042] Specifically, the feed valve plate 131 is controlled to open and close by the feed valve plate controller 132, and the discharge valve plate 212 is controlled to open and close by the discharge valve plate controller 211, which is used to control the airtightness of the feed and discharge ports.

[0043] In one embodiment of the present invention, such as Figures 2-5 As shown, a drying box support 26 is provided below the drying box 25. The drying box support 26 is rotatably connected to the drying box 25. A rotary motor 24 is provided on the drying box support 26 to drive the drying box 25 to adjust the working angle. A receiving box 27 is provided at the bottom of the drying box support 26. A balance block 252 is provided on the outer surface of the drying box 25 to balance the force during the rotation of the drying box 25.

[0044] Specifically, after drying is completed, the drying box 25 is rotated 180° by the rotary motor 24 so that the dry material outlet 21 is aligned with the receiving box 27. Then the discharge valve plate 212 is opened and the stirring blades 282 gradually scrape the PEN dry material in the fixed cylinder 281 clean. The PEN dry material falls from the dry material outlet 21 into the receiving box 27 under gravity.

[0045] To clearly illustrate the above embodiments, refer to... Figures 1-6As shown, the water washing and drying equipment for the production of polyarylether ether nitrile (PEN) of this application is used as follows: During the water washing process of PEN, nitrogen or other inert gases are first connected through the first inlet valve 121 and the second inlet valve 122. The inert gas is introduced into the water washing tank 11 to protect the water washing environment and prevent oxidation of the washing liquid and PEN particles during the water washing process. Exhaust gas is discharged from the first exhaust valve 123 and the second exhaust valve 125.

[0046] The PEN product is then fed into the washing tank 11 through the feed port 13 at the top of the washing tank 11. The PEN then falls onto the filter screen 194. At the same time, the washing liquid is injected into the washing tank 11 through the washing liquid port 14. The washing liquid dissolves and adsorbs the impurities on the surface of the PEN. The washing liquid then enters the bottom of the washing tank 11 through the filter screen 194. Subsequently, the first drive motor 181 drives the circulating fan blade 182 to rotate, drawing the washing liquid below the filter screen 194 back into the circulation pipe 183. The washing liquid is then sent back to the top of the filter screen 194 through the circulation pipe 183 to wash the PEN again. This process is repeated.

[0047] During the PEN washing process, the second drive motor 191 rotates, driving the drive rod 192 to rotate, which in turn drives the scraper blades 193 to rotate. The scraper blades 193 scrape the PEN particles adsorbed on the filter screen 194 and transport them upwards, allowing the PEN particles to re-integrate into the washing liquid above the filter screen 194. This reduces clogging caused by long-term adsorption of PEN particles on the filter screen 194 and improves the permeability of the filter screen 194. In addition, when the washing liquid is transported upwards through the circulation pipe 183, it enters the surface of the filter screen 194 horizontally after passing through the guide plate 196, forming a lateral sweeping effect on the PEN particles on the filter screen 194. This reduces residue on the surface of the filter screen 194 and also allows the PEN particles to be fully mixed with the washing liquid, thoroughly washing the particles on the PEN surface.

[0048] After the PEN is washed, the circulating fan blades 182 stop rotating and the washing liquid is discharged through the washing liquid outlet 1101. Then, a small amount of washing liquid is injected again through the washing liquid port 14 at the top of the washing tank 11 to mix and transfer the PEN into the drying chamber 25. Then, the control valve 17 is opened, and the spiral scraper blades 193 can transfer the PEN particles on the filter screen 194 to the solid material outlet 16 by centrifugal force. The solid material outlet 16 sends the PEN into the drying chamber 25 through the sealed bearing 251.

[0049] After PEN and washing liquid enter the drying chamber 25 together, they first enter the fixed cylinder 281. The washing liquid flows out through the bottom grate plate 283 to the water outlet 252 at the bottom of the drying chamber 25, and is quickly transferred out by the negative pressure pump 253 in the water outlet 252.

[0050] During the drying process, the air inlet of the blower 22 is connected to an inertia protector, and the protective gas is heated by the heater 221 to form a hot airflow. The hot airflow passes through the fixed cylinder 281 and is then transferred out by the negative pressure pump 253, causing the PEN in the fixed cylinder 281 to dry rapidly. During this process, the stirring blades 282 inside the fixed cylinder 281 are rotated by the stirring motor 284 to stir the PEN particles in the fixed cylinder 281, preventing agglomeration, and accelerating the air from the blower 22 through the grate plate 283 at the bottom of the fixed cylinder 281, thus rapidly drying the PEN.

[0051] After drying, the drying box 25 is rotated 180° by the rotary motor 24 so that the dry material outlet 21 is aligned with the receiving box 27. Then the discharge valve plate 212 is opened and the stirring blades 282 gradually scrape the PEN dry material in the fixed cylinder 281 clean. The PEN dry material falls from the dry material outlet 21 into the receiving box 27 under gravity.

[0052] In summary, the water washing and drying equipment for the production of polyarylether nitrile in this embodiment of the invention uses a circulating water washing component in the water washing tank to mix PEN product particles with the water washing liquid and then circulate the water washing process. The PEN surface is fully in contact with the water washing liquid, which thoroughly and quickly washes away impurities on the PEN surface, reduces the water washing process, and improves the utilization rate of the water washing liquid. Then, the PEN particles after water washing are dried by the drying mechanism to obtain PEN products with higher purity.

[0053] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A water washing and drying device for the production of polyarylether nitrile, characterized in that, It includes a washing mechanism (1) and a drying mechanism (2), wherein: The washing mechanism (1) includes a washing tank (11) and a circulating washing assembly (18). The washing tank (11) is provided with a gas protection assembly (12), which is used to introduce protective gas into the washing tank (11). The top of the washing tank (11) is provided with a feed inlet (13) and a washing liquid outlet (14). The circulating water washing assembly (18) is used to circulate water wash the polyarylether nitrile product. The circulating water washing assembly (18) includes a circulating pipe (183) and a circulating fan blade (182). The washing tank (11) is equipped with a filter screen (194). The circulating pipe (183) is vertically inserted through the inner side of the filter screen (194). The circulating fan blade (182) is rotatably disposed inside the circulating pipe (183). The drying mechanism (2) includes a drying box (25) installed at the product discharge end of the washing box (11), and a blower (22) is installed on the drying box (25). The upper surface of the filter screen (194) is provided with a scraper assembly (19), wherein the scraper assembly (19) includes a scraper blade (193) and a water guide plate (196), wherein the top discharge end of the circulation pipe (183) is flush with the upper surface of the filter screen (194), the water guide plate (196) is rotatably disposed above the discharge end of the circulation pipe (183), and the plane of the water guide plate (196) is perpendicular to the water outlet direction of the circulation pipe (183), and the scraper blade (193) is disposed on the rotating edge of the water guide plate (196).

2. The water washing and drying equipment for the production of polyarylether nitrile according to claim 1, characterized in that, The bottom of the scraper blade (193) is provided with a brush, which is in contact with the filter screen (194). The scraper blade (193) has an arc-shaped structure. A second drive motor (191) is provided above the scraper blade (193). The second drive motor (191) rotates to drive the drive rod (192) to rotate, thereby driving the scraper blade (193) to rotate.

3. The water washing and drying equipment for the production of polyarylether nitrile according to claim 1, characterized in that, The bottom of the circulation pipe (183) is provided with a suction port (184), and the bottom of the washing tank (11) is provided with a first drive motor (181) that drives the circulation fan blades (182) to rotate.

4. The water washing and drying equipment for the production of polyarylether nitrile according to claim 1, characterized in that, The washing tank (11) is divided into a filter tank (1102) and a return tank (1103) by a filter screen (194). The feed inlet (13) and the washing liquid outlet (14) are located at the top of the filter tank (1102). The bottom of the return tank (1103) is provided with a washing liquid outlet (1101). The air protection assembly (12) includes a first air inlet valve (121) and a second air inlet valve (122). The first air inlet valve (121) is located on the top of the filter box (1102). The top of the filter box (1102) is provided with a first exhaust valve (123). The second air inlet valve (122) is located on the top of the return box (1103). The top of the return box (1103) is provided with a second exhaust valve (125). The outlet ends of the first exhaust valve (123) and the second exhaust valve (125) are both provided with pressure limiting valves (124).

5. The water washing and drying equipment for the production of polyarylether nitrile according to claim 1, characterized in that, The washing tank (11) is provided with a solid material outlet (16) at the product discharge end. The solid material outlet (16) and the filter screen (194) are on the same plane. The discharge end of the solid material outlet (16) is provided with a control valve (17). The connection between the drying box (25) and the control valve (17) is provided with a sealed bearing (251).

6. The water washing and drying equipment for the production of polyarylether nitrile according to claim 5, characterized in that, The drying chamber (25) is equipped with a drying assembly (28), which includes a fixed cylinder (281), stirring blades (282), and stirring motor (284). The fixed cylinder (281) is located inside the drying chamber (25), the stirring blades (282) are rotatably located inside the fixed cylinder (281), the power shaft of the stirring motor (284) is connected to the stirring blades (282), and a grate plate (283) is provided at the bottom of the fixed cylinder (281).

7. The water washing and drying equipment for the production of polyarylether nitrile according to claim 5, characterized in that, The top of the drying box (25) is provided with a dry material outlet (21), the dry material outlet (21) is provided with a discharge valve plate (212), the discharge valve plate (212) is provided with a discharge valve plate controller (211), the bottom of the drying box (25) is provided with a water outlet (252), the inside of the water outlet (252) is provided with a negative pressure pump (253), and the air outlet end of the blower (22) is provided with a heater (221).

8. The water washing and drying equipment for the production of polyarylether nitrile according to claim 1, characterized in that, A drying box support (26) is provided below the drying box (25). The drying box support (26) is rotatably connected to the drying box (25). A rotary motor (24) is provided on the drying box support (26) to drive the drying box (25) to adjust its working angle. A receiving box (27) is provided at the bottom of the drying box support (26).

9. The water washing and drying equipment for the production of polyarylether nitrile according to claim 1, characterized in that, The feed inlet (13) is provided with a feed valve plate (131), and a feed valve plate controller (132) is provided on the feed valve plate (131).

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