Water washing, separating and filtering equipment for synthetic resin production

Abstract

The invention provides a washing, separating and filtering device for synthetic resin production, which comprises a horizontally arranged kettle body, a cylinder body of the kettle body is provided with an inner cavity which is used for accommodating materials and extends horizontally and axially, and the bottom of the inner cavity is of a plane structure. The cross section profile of a cylinder body of the kettle body is sequentially connected with an inclined guide surface plate, a side curved plate and a flat plate from top to bottom, the flat plate forms the bottom of an inner cavity of the kettle body of the kettle body and is used as a low-shear paving plane for static deposition of resin particles, and the flat plate is designed in the kettle body in a bedroom layout. Compared with a normal component perpendicular to the curved surface and a tangential component parallel to the curved surface generated by the resin particles in butt joint at the bottom of the curved surface mechanism of the vertical kettle body, the mechanical shear force between the resin particles and between the resin and the inner wall of the kettle body is reduced, and the mechanical shear force between the resin particles and the inner wall of the kettle body is reduced. And the yield of the resin particles in the washing separation process is ensured.

Description

Technical Field

[0001] This invention mainly relates to the field of water washing separation filtration, and specifically to a water washing separation filtration device for synthetic resin production. Background Technology

[0002] After epoxy resin is synthesized by polycondensation reaction in a reactor, the mixture usually contains unreacted raw materials, by-product salts, catalyst particles, and gel particles. In subsequent production processes, water washing, separation, and filtration are required to remove impurities other than the synthesized resin particles, so as to avoid the accumulation of impurities affecting the performance and storage stability of epoxy resin.

[0003] Typically, water washing and stratification are carried out in the same washing and separation vessel. First, the epoxy resin mixture transferred to the washing and separation vessel is kept at a temperature of 50℃-60℃ and water is injected to ensure that the mixture is fully emulsified. During this process, the impurities and water-soluble substances carried in the epoxy resin diffuse in the aqueous phase. This process usually requires mechanical stirring.

[0004] In the stratification process, since the density of epoxy resin is slightly greater than that of water, the aqueous phase will appear on top of the epoxy resin deposit. The stratification is judged by observing the interface of the washing and separation vessel, and the corresponding valve is opened to discharge the aqueous phase. The washing and stratification process usually needs to be repeated 2-5 times until the conductivity or chloride ion content of the aqueous phase discharged from the washing and separation vessel is reduced to the design index. It can be determined that the epoxy resin in the washing and separation vessel has completed the impurity filtration.

[0005] Currently, the conventional vertical reactor used in the water washing and separation process has limitations due to its curved bottom structure and pipe diameter. When batch washing epoxy resin mixtures, the epoxy resin particles are subjected to a normal component perpendicular to the curved surface and a tangential component parallel to the curved surface on the inner wall of the reactor. The tangential component causes shear forces between the epoxy resin particles or between the epoxy resin particles and the inner wall of the reactor, resulting in the particles breaking, grinding, or pulverizing during multiple water washing and separation processes. This has an adverse effect on the yield control of epoxy resin particles.

[0006] The inventors have proposed a water washing separation and filtration device for synthetic resin production. By adopting a specially designed horizontal tank structure with a flat bottom, the contact area between epoxy resin particles and the curved surface of the tank body is reduced during the water washing, spreading, sedimentation, and stratification process. The epoxy resin particles are evenly stressed during flat-bottom spreading, reducing the shear force generated by static deposition of epoxy resin particles in the tank. The flat-bottom design provides a larger sedimentation and spreading surface, reducing the mutual wear that may occur during particle settling. At the same time, the flat-bottom structure makes the solid-liquid interface after stratification clear and stable, facilitating subsequent drainage treatment.

[0007] Compared to traditional vertical reactors, the discharge design avoids the generation of vortex-shaped funnel flow, where particles in the center are discharged first, followed by particles on the outer edges. This results in intense mutual compression and shearing between epoxy resin particles during discharge, thereby reducing the generation of crushed material and decreasing the probability of fine powder clogging pipelines and filters. Summary of the Invention

[0008] 1. The problem the invention aims to solve: The present invention provides a water washing separation and filtration device for synthetic resin production, which solves the technical problem mentioned in the background art that the water washing separation process in the existing resin particle production adopts a vertical reactor, resulting in large mechanical shear forces between resin particles.

[0009] 2. Technical Solution: To achieve the above objectives, the technical solution provided by the present invention is as follows: a water washing separation and filtration device for synthetic resin production, comprising a horizontally arranged vessel body, wherein the vessel body has a horizontally axially extending inner cavity for containing materials, wherein the bottom of the inner cavity is a planar structure, and the cross-sectional profile of the vessel body is connected from top to bottom by an inclined guide plane plate, a side curved plate and a flat plate, wherein the flat plate forms the bottom of the inner cavity of the vessel body and is used as a low-shear spreading plane for static deposition of resin particles.

[0010] Both the inclined guide plane plate and the flat plate are planar structures, and the side curved panel is an arc structure. The cylindrical body is formed by the inclined guide plane plate, the side curved panel and the flat plate. The inner connecting welds between the inclined guide plane plate, the side curved panel and the flat plate are rounded and smoothed.

[0011] Furthermore, end plates are fixed at both ends of the vessel body, and the two end plates form a seal on the vessel body structure. A pin is fixed in the middle of the side of the end plate away from the vessel body, and the middle of the pin is movably connected to the top of the support. A drive motor is fixed in the top of the support on the left side of the vessel body, and the output end of the drive motor is fixedly connected to the end of the pin through a coupling.

[0012] Furthermore, a manhole pipe is fixed in the middle of the inclined guide plate, and a sealing cap is detachably connected to the top of the manhole pipe by bolts. A nut seat is fixed in the middle of the top surface of the sealing cap, and a screw is threadedly connected to the middle of the nut seat. A handwheel is fixed in the top of the screw, and the bottom of the screw extends to the inside of the vessel body. A sealing plate is fixed in the bottom of the screw, and the bottom surface of the sealing plate is kept on the same structural plane as the bottom surface of the inclined guide plate.

[0013] Furthermore, a material pipe is fixedly installed on the top of the side-curved panel. The opening of the material pipe extends towards the inside of the vessel body to the joint between the top of the inclined guide plate and the side-curved panel. An opening and closing valve is fixedly installed on the feed side of the material pipe. Multiple water inlet pipes are fixedly installed at equal intervals along the diagonal lines from the middle to the bottom of the side-curved panel. A plug is detachably connected to the middle of the water inlet pipe. The end of the plug facing the inside of the side-curved panel has a curved structure and forms a smooth transition with the inside of the side-curved panel. The water inlet pipe located at the lowest point of the side-curved panel is a water inlet pipe, and the remaining water inlet pipes are drainage pipes.

[0014] Furthermore, a frame is fixedly provided at the bottom of the plate to maintain the integrity of the planar structure, and the left and right ends of the frame are respectively fixedly connected to the bottom of the opposite sides of the two end plates.

[0015] Furthermore, the upper and lower parts of the vessel body are respectively provided with a feed pipe and a discharge pipe. The discharge port of the feed pipe and the feed port of the discharge pipe are aligned with the same axis, and the feed pipe and the discharge pipe are matched with the material pipe. A feed valve is fixedly provided at the discharge port of the feed pipe, and a discharge valve is fixedly provided at the feed port of the discharge pipe.

[0016] Furthermore, the vessel body is provided with mounting pipes on both the top and bottom. The two mounting pipes are respectively matched with the feed pipe and the discharge pipe. The top of the mounting pipe is symmetrically fixed with guide seats. The outside of the mounting pipe is fixed with a telescopic cylinder. The bottom of the mounting pipe is movably sleeved with a connecting pipe. The mating surface of the connecting pipe and the feed pipe is fixed with a sealing gasket. The feed port of the connecting pipe matches the feed pipe. The outside of the connecting pipe is symmetrically fixed with guide rods. The outside of the guide rods is movably inserted into the middle of the guide seats. The outside of the connecting pipe is fixedly connected to the bottom output end of the telescopic cylinder. The bottom of the connecting pipe is fixed with a one-way water inlet valve.

[0017] A method for water washing and separation in the production of synthetic resins includes the following steps: S1: The synthetic resin mixture is injected into the reactor through the feed pipe, installation pipe, docking pipe and material pipe. Before injection, water is injected into the installation pipe and docking pipe in advance through the opening and closing valve, feed valve and water inlet check valve. The reactor needs to be pre-filled with water. The resin particles fall into the reactor through the buffer of water. S2: Washing water is injected through the water inlet pipe located at the lowest point of the side curved panel. It is injected into the epoxy particle mixture in an upflow manner. The drive motor drives the vessel to rotate slowly for water washing and separation. S3: Stop rotating, bring the plate of the reactor body to the lowest horizontal position, let it stand and separate into layers, forming an upper aqueous phase and a lower resin phase; S4: The water phase is discharged through the drain outlet formed by the water pipe located at the high position of the side curved panel; S5: Repeat steps S2-S4 until the discharged aqueous phase meets the standards; S6: The reactor body is driven to rotate by the drive motor. The material pipe is connected to the discharge pipe through the installation pipe and the connecting pipe to discharge the resin phase. Water needs to be injected into the installation pipe and the connecting pipe in advance through the water inlet check valve at the discharge pipe for buffering treatment.

[0018] 3. Beneficial effects: Compared with the prior art, the technical solution provided by this invention has the following advantages: This invention provides a water washing separation and filtration device for synthetic resin production. The flat plate is designed in a horizontally arranged vessel body, which reduces the generation of mechanical shear force during the static sedimentation of resin particles. Compared with the normal component perpendicular to the curved surface and the tangential component parallel to the curved surface generated by the bottom sedimentation and docking of resin particles in a vertical vessel body, the mechanical shear force between resin particles and between the resin and the inner wall of the vessel body is reduced. This ensures the yield of resin particles in the water washing and separation process, reduces the generation of broken resin particles, and avoids the blockage of pipelines and filters in subsequent processes caused by broken fine powder.

[0019] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0020] Figure 1 This is a schematic diagram showing the overall component design locations of the structure of the present invention; Figure 2 This is an exploded view of the vessel structure of the present invention; Figure 3 This is an exploded view of the cylindrical structure of the present invention; Figure 4 This is a cross-sectional schematic diagram of the structure of the present invention; Figure 5 This is a front sectional view of the vessel structure of the present invention; Figure 6 This is a half-sectional schematic diagram of the vessel body structure of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of the structure at point A in the middle; Figure 8 This is a schematic diagram of the assembly of the mounting pipe and the connecting pipe of the present invention.

[0021] Figure label: Container body-1; End plate-11; Pin-12; Bracket-13; Drive motor-14; Angled guide plate-2; Manhole pipe-21; Sealing cap-22; Nut seat-23; Screw-24; Handwheel-25; Sealing plate-26; Side-curved panel-3; Material pipe-31; Water inlet pipe-32; Plug-33; Flat plate-4; Frame-41; Feed pipe-5; Discharge guide pipe -6; Installation pipe-7; guide seat-71; telescopic cylinder-72; connecting pipe-73; guide rod-74; inlet check valve-75. Detailed Implementation

[0022] To facilitate understanding of the present invention, a more complete description of the invention will be given below with reference to the accompanying drawings, which illustrate several embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the invention will be more thorough and complete.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element; the terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. Example

[0025] Reference Figure 1-8 A water washing separation and filtration device for synthetic resin production includes a horizontally arranged vessel body 1. The vessel body 1 has a horizontally extending inner cavity for containing materials. The bottom of the inner cavity is a planar structure. The cross-sectional profile of the vessel body 1 is connected from top to bottom by an inclined guide plate 2, a side curved plate 3, and a flat plate 4. The flat plate 4 forms the bottom of the inner cavity of the vessel body 1 and is used as a low-shear spreading plane for static deposition of resin particles.

[0026] Both the inclined guide plate 2 and the flat plate 4 are planar structures, while the side-curved panel 3 is an arc structure. The cylindrical body is formed by the inclined guide plate 2, the side-curved panel 3, and the flat plate 4. The inner connecting welds between the inclined guide plate 2, the side-curved panel 3, and the flat plate 4 are rounded and smoothed.

[0027] In this embodiment, end plates 11 are fixed at both ends of the vessel body 1. The two end plates 11 form a seal on the vessel body structure. A pin 12 is fixed in the middle of the side of the end plate 11 away from the vessel body. The middle of the pin 12 is movably connected to the top of the support 13. A drive motor 14 is fixed in the top of the support 13 on the left side of the vessel body 1. The output end of the drive motor 14 is fixedly connected to the end of the pin 12 through a coupling.

[0028] The drive motor 14 drives the vessel body 1 to rotate on the support 13 via the pin shaft 12. During the rotation of the vessel body 1, the resin particle mixture and water in the vessel body 1 are mixed and emulsified. The connection between the inclined guide plate 2, the side curved plate 3 and the plate 4 forms a guide, which promotes the mixing efficiency of the resin particle mixture and water.

[0029] The low-shear spreading plane formed by the plate 4 has a larger resin particle spreading surface for static deposition compared to the currently used vertical washing and separation vessel. This can increase the water washing and separation capacity of resin particles in a single washing and separation process. At the same time, the flat bottom design promotes the sedimentation and distribution of resin particles in the vessel body 1, avoids the formation of funnel flow, and the resin particle spreading layer is thinner than that of vertical equipment, which is beneficial for subsequent water mixing treatment.

[0030] In this embodiment, a manhole pipe 21 is fixed in the middle of the inclined guide plate 2. A sealing cover 22 is detachably connected to the top of the manhole pipe 21 by bolts. A nut seat 23 is fixed in the middle of the top surface of the sealing cover 22. A screw 24 is threadedly connected to the middle of the nut seat 23. A handwheel 25 is fixed in the top of the screw 24. The bottom of the screw 24 extends to the inside of the vessel body 1. A sealing plate 26 is fixed in the bottom of the screw 24. The bottom surface of the sealing plate 26 is kept on the same structural surface as the bottom surface of the inclined guide plate 2.

[0031] The manhole tube 21 is used for workers to enter and exit during internal maintenance of the vessel body 1. It uses a screw 24 and a handwheel 25 to rotate on the nut seat 23, keeping the sealing plate 26 and the bottom surface of the inclined guide plate 2 on the same structural surface. This prevents the formation of pores from interfering with the mixing and discharge of epoxy resin particles, which could lead to the epoxy resin particles breaking at the manhole tube 21.

[0032] In this embodiment, a feed pipe 31 is fixedly provided on the top of the side curved panel 3. The feed pipe 31 extends from the inlet of the inner side of the vessel body 1 to the joint between the top of the inclined guide plate 2 and the side curved panel 3. An opening and closing valve is fixedly provided on the feed side of the feed pipe 31. Multiple water inlet pipes 32 are fixedly provided at equal intervals along the diagonal line from the middle to the bottom of the side curved panel 3. A plug 33 is detachably connected to the middle of the water inlet pipe 32. The end of the plug 33 facing the inner side of the side curved panel 3 has a curved structure and forms a smooth transition with the inner side of the side curved panel 3. The water inlet pipe 32 located at the lowest point of the side curved panel 3 is a water inlet pipe, and the remaining water inlet pipes 32 are drainage pipes.

[0033] The feed pipe 31 is connected to the feed pipe 5 and the discharge pipe 6 through the telescopic mounting pipe 7 and the connecting pipe 73. The rotation of the vessel body 1 is adjusted by the drive motor 14 to complete the feeding process of the resin particle mixture in the vessel body 1 and the discharge process of the washed and separated resin particles.

[0034] During the material discharge operation, the resin particles are discharged through the material pipe 31, the installation pipe 7, the connecting pipe 73 and the discharge conduit 6 due to the cooperation of the inclined guide plate 2 and the side curved plate 3.

[0035] The water inlet pipe 32 at the lowest point of the side curved panel 3 is used for water inlet treatment, which completes the upflow water inlet design in the water washing and separation of resin particles. This water inlet treatment can improve the mixing efficiency of water and resin particles in the vessel 1, and reduce the impact of water injection on resin particles compared with the traditional sprinkler water spraying operation.

[0036] The high-level water inlet pipe 32 is used for drainage treatment, and multiple water inlet pipes 32 are set up to facilitate users to carry out drainage treatment according to the processing volume of resin particles and the water injection volume, as well as the subsequent stratification position of the water phase and resin phase. Due to the rotatable design of the reactor body 1, the inlet and outlet of the water inlet pipe 32 need to be equipped with corresponding detachable joints and connected to the water supply and drainage pipelines of the plant area.

[0037] In this embodiment, a frame 41 for maintaining the integrity of the planar structure is fixedly provided at the bottom of the plate 4, and the left and right ends of the frame 41 are respectively fixedly connected to the bottom of the opposite sides of the two end plates 11.

[0038] The planar structure design of the plate 4, due to the horizontal structure layout, adopts a frame 41 to maintain the strength of the bottom planar structure of the plate 4 and avoid deformation of the plate 4 structure.

[0039] Meanwhile, the flat plate 4 is designed inside the horizontally arranged vessel 1 to reduce the generation of mechanical shear force during the static sedimentation of resin particles. Compared with the normal component perpendicular to the curved surface and the tangential component parallel to the curved surface generated by the bottom sedimentation and docking of resin particles in the vertical vessel 1 curved surface mechanism, the mechanical shear force between resin particles and between resin and the inner wall of vessel 1 is reduced. This ensures the yield of resin particles in the water washing and separation process, reduces the generation of broken resin particles, and avoids the fine powder caused by broken particles leading to pipeline blockage and filter blockage in subsequent processes.

[0040] The flat-bottom design reduces the contact area between epoxy resin particles and the curved surface of the vessel body during the washing, spreading, sedimentation, and stratification process. The epoxy resin particles are evenly stressed during flat-bottom spreading, reducing the shear force generated by static deposition within the vessel. The larger sedimentation and spreading surface provided by the flat-bottom design prevents relative slippage between particles as seen in the curved surface of a vertical washing and separation vessel, reducing potential mutual wear during particle settling. Furthermore, the flat-bottom structure ensures a clear and stable solid-liquid interface after stratification, facilitating subsequent drainage treatment.

[0041] In this embodiment, a feed pipe 5 and a discharge pipe 6 are respectively provided on the upper and lower sides of the vessel body 1. The discharge port of the feed pipe 5 and the feed port of the discharge pipe 6 are aligned along the same axis. The feed pipe 5 and the discharge pipe 6 are matched with the material pipe 31. A feed valve is fixedly provided at the discharge port of the feed pipe 5 and a discharge valve is fixedly provided at the feed port of the discharge pipe 6.

[0042] The feed conduit 5 and the feed valve work together to discharge the resin particle mixture that has completed the polycondensation reaction into the reactor body 1 through the mounting pipe 7 and the connecting pipe 73 for water washing and separation treatment.

[0043] In this embodiment, the upper and lower sides of the vessel body 1 are provided with mounting pipes 7. The two mounting pipes 7 are respectively matched with the feed pipe 5 and the discharge pipe 6. The top of the mounting pipe 7 is symmetrically fixed with guide seats 71. The outside of the mounting pipe 7 is fixed with telescopic cylinders 72. The bottom of the mounting pipe 7 is movably sleeved with a connecting pipe 73. The mating surface of the connecting pipe 73 and the material pipe 31 is fixed with a sealing gasket. The feed port of the connecting pipe 73 matches the material pipe 31. The outside of the connecting pipe 73 is symmetrically fixed with guide rods 74. The outside of the guide rods 74 is movably inserted into the middle of the guide seat 71. The outside of the connecting pipe 73 is fixedly connected to the bottom output end of the telescopic cylinder 72. The bottom of the connecting pipe 73 is fixed with a water inlet check valve 75.

[0044] The guide seat 71 cooperates with the guide rod 74 to complete the movement guidance of the connecting pipe 73 outside the installation pipe 7. The telescopic cylinder 72 completes the telescopic adjustment of the connecting pipe 73 outside the installation pipe 7, and completes the docking treatment of the feed pipe 5 and the material pipe 31 and the discharge pipe 6 and the material pipe 31.

[0045] To reduce the impact of resin particles entering the reactor body 1, water needs to be pre-filled into the feed pipe 73 and the installation pipe 7 through the water inlet check valve 75. At the same time, the reactor body 1 also needs to be pre-filled with water through the water inlet pipe 32, so that the resin particles fall into the water instead of directly contacting the inner wall of the reactor body 1.

[0046] In the discharge process, in order to reduce the generation of funnel flow, it is necessary to inject water into the discharge conduit 6, installation pipe 7 and connecting pipe 73 through the water inlet check valve 75.

[0047] A method for water washing and separation in the production of synthetic resins includes the following steps: S1: The synthetic resin mixture is injected into the reactor body 1 through the feed pipe 5, installation pipe 7, connecting pipe 73 and material pipe 31. Before injection, water is injected into the installation pipe 7 and connecting pipe 73 in advance through the opening and closing valve, feed valve and water inlet check valve 75. The reactor body 1 needs to be pre-filled with water. The resin particles fall into the reactor body 1 through the buffer of water.

[0048] S2: Washing water is injected through the water inlet pipe 32 located at the lowest point of the side curved panel 3, and injected into the epoxy particle mixture in an upflow manner. The drive motor 14 drives the vessel body 1 to rotate slowly for water washing and separation.

[0049] S3: Stop rotating, so that the plate 4 of the vessel 1 is at its lowest horizontal position, and allow it to stand and separate into layers, forming an upper aqueous phase and a lower resin phase.

[0050] S4: The water phase is discharged through the drain outlet formed by the water inlet pipe 32 located at the high position of the side curved panel 3.

[0051] S5: Repeat steps S2-S4 until the discharged aqueous phase meets the standards.

[0052] S6: The reactor body 1 is driven to rotate by the drive motor 14. The material pipe 31 is connected to the discharge pipe 6 through the installation pipe 7 and the connecting pipe 73 to discharge the resin phase. Water needs to be injected into the installation pipe 7 and the connecting pipe 73 at the discharge pipe 6 in advance through the water inlet check valve 75 for buffering treatment.

[0053] The above-described embodiments are merely illustrative of certain implementations of the present invention, and are described in a relatively specific and detailed manner. However, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements are all within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A water washing, separation, and filtration device for synthetic resin production, characterized in that: The vessel includes a horizontally arranged vessel body (1), the vessel body (1) having a horizontally axially extending inner cavity for containing materials, wherein the bottom of the inner cavity is a planar structure, and the cross-sectional profile of the vessel body (1) is connected from top to bottom by an inclined guide plate (2), a side curved plate (3) and a flat plate (4), the flat plate (4) forming the bottom of the inner cavity of the vessel body (1) and serving as a low-shear spreading plane for static deposition of resin particles; The inclined guide plate (2) and the flat plate (4) are both planar structures, and the side curved panel (3) is an arc-shaped structure. The cylindrical body is formed by the inclined guide plate (2), the side curved panel (3) and the flat plate (4). The inner connecting weld between the inclined guide plate (2), the side curved panel (3) and the flat plate (4) is rounded and smoothed.

2. The water washing separation and filtration equipment for synthetic resin production according to claim 1, characterized in that: Both ends of the vessel body (1) are fixed with end plates (11), and the two end plates (11) form a seal on the vessel body (1) structure. A pin (12) is fixed in the middle of the side of the end plate (11) away from the vessel body. The middle of the pin (12) is movably connected to the top of the support (13). A drive motor (14) is fixed in the top of the support (13) on the left side of the vessel body (1). The output end of the drive motor (14) is fixedly connected to the end of the pin (12) through a coupling.

3. The water washing, separation, and filtration equipment for synthetic resin production according to claim 1, characterized in that: The inclined guide plate (2) has a manhole tube (21) fixed in the middle. The top of the manhole tube (21) is detachably connected to a sealing cover (22) by bolts. The top surface of the sealing cover (22) has a nut seat (23) fixed in the middle. The nut seat (23) has a screw (24) threadedly connected in the middle. The top of the screw (24) has a handwheel (25) fixed. The bottom of the screw (24) extends to the inside of the vessel body (1). The bottom of the screw (24) has a sealing plate (26) fixed. The bottom surface of the sealing plate (26) is on the same structural surface as the bottom surface of the inclined guide plate (2).

4. The water washing separation and filtration equipment for synthetic resin production according to claim 1, characterized in that: A feed pipe (31) is fixedly provided on the top of the side curved panel (3). The feed pipe (31) extends from the inlet of the vessel body (1) to the joint between the top of the inclined guide plate (2) and the side curved panel (3). An opening and closing valve is fixedly provided on the feed side of the feed pipe (31). Multiple water inlet pipes (32) are fixedly provided at equal intervals on the diagonal line from the middle to the bottom of the side curved panel (3). A plug (33) is detachably connected to the middle of the water inlet pipe (32). The end of the plug (33) facing the inside of the side curved panel (3) is curved and forms a smooth transition with the inside of the side curved panel (3). The water inlet pipe (32) located at the lowest point of the side curved panel (3) is a water inlet pipe, and the remaining water inlet pipes (32) are drainage pipes.

5. The water washing separation and filtration equipment for synthetic resin production according to claim 1, characterized in that: The bottom of the plate (4) is fixedly provided with a skeleton (41) to maintain the integrity of the planar structure. The left and right ends of the skeleton (41) are respectively fixedly connected to the bottom of the opposite sides of the two end plates (11).

6. The water washing separation and filtration equipment for synthetic resin production according to claim 1, characterized in that: The upper and lower parts of the vessel body (1) are respectively provided with a feed pipe (5) and a discharge pipe (6). The discharge port of the feed pipe (5) and the feed port of the discharge pipe (6) are aligned along the same axis. The feed pipe (5) and the discharge pipe (6) are connected to the material pipe (31). A feed valve is fixedly provided at the discharge port of the feed pipe (5), and a discharge valve is fixedly provided at the feed port of the discharge pipe (6).

7. The water washing separation and filtration equipment for synthetic resin production according to claim 1, characterized in that: The vessel body (1) is provided with mounting pipes (7) on both the top and bottom. The two mounting pipes (7) are respectively connected to the feed pipe (5) and the discharge pipe (6). The top of the mounting pipe (7) is symmetrically fixed with guide seats (71). The outside of the mounting pipe (7) is fixed with telescopic cylinders (72). The bottom of the mounting pipe (7) is movably sleeved with a connecting pipe (73). The mating surface of the connecting pipe (73) and the material pipe (31) is fixed with a sealing gasket. The feed port of the connecting pipe (73) is connected with the material pipe (31). The outside of the connecting pipe (73) is symmetrically fixed with guide rods (74). The outside of the guide rods (74) is movably inserted into the middle of the guide seat (71). The outside of the connecting pipe (73) is fixedly connected to the bottom output end of the telescopic cylinder (72). The bottom of the connecting pipe (73) is fixed with a water inlet check valve (75).

8. A method for water washing and separation in synthetic resin production, based on the water washing, separation, and filtration equipment for synthetic resin production as described in claims 1-7, characterized in that: Includes the following steps: S1: The synthetic resin mixture is injected into the reactor body (1) through the feed pipe (5), installation pipe (7), connecting pipe (73) and material pipe (31). Before injection, water is injected into the installation pipe (7) and connecting pipe (73) in advance through the opening and closing valve, feed valve and water inlet check valve (75). The reactor body (1) needs to be pre-filled with water. The resin particles fall into the reactor body (1) through the buffer of water. S2: Washing water is injected through the water inlet pipe (32) located at the lowest point of the side curved panel (3), and injected into the epoxy particle mixture in an upflow manner. The drive motor (14) drives the vessel body (1) to rotate slowly for water washing and separation. S3: Stop rotating, so that the plate (4) of the vessel body (1) is at the lowest horizontal position, let it stand and separate into layers to form an upper aqueous phase and a lower resin phase; S4: The water phase is discharged through the drain outlet formed by the water inlet pipe (32) located at the high position of the side curved panel (3); S5: Repeat steps S2-S4 until the discharged aqueous phase meets the standards; S6: The reactor body (1) is driven to rotate by the drive motor (14). The feed pipe (31) is connected to the discharge pipe (6) through the installation pipe (7) and the connecting pipe (73) to discharge the resin phase. Water needs to be injected in advance through the water inlet check valve (75) in the installation pipe (7) and the connecting pipe (73) at the discharge pipe (6) for buffering treatment.

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