Filtering device for processing synthetic resin material and filtering method thereof

Abstract

The invention discloses a filter device for synthetic resin material processing and a filter method thereof, and belongs to the technical field of resin material pre-treatment.The filter device comprises an outer shell, a liquid storage kettle is connected to the bottom of the outer shell, a cover is arranged at the top of the outer shell, liquid inlet and outlet pipes are arranged at the positions, corresponding to one side of the liquid storage kettle, of the cover, and a supporting disc is installed at the bottom of an inner cavity of the outer shell. According to the invention, through the designed guide pipe, the to-be-filtered medium can filter impurities through flowing in the guide pipe, the filtered residual impurities can stay on the surface of the filtering mechanism, the current filtering pressure can be adjusted after the filtering mechanism is controlled to be unfolded, and the current filtering pressure can be adjusted after the filtering mechanism is unfolded. Residual materials can be removed from gaps expanded by the filtering mechanism, and the filtering adaptability to different liquid materials in the resin raw material filtering process is improved by controlling the filtering pressure and combining the backwashing effect.

Description

Technical Field

[0001] The present invention belongs to the technical field of resin material pretreatment, and particularly relates to a filtering device for processing synthetic resin materials and a filtering method thereof. Background Art

[0002] Synthetic resin materials are a class of high molecular polymers obtained through chemical synthesis, and they have a wide range of applications in modern society. Synthetic resins are usually formed by the polymerization reaction of small molecule monomers, and have various properties such as plasticity, adhesiveness, film-forming property, insulation property, chemical corrosion resistance, etc. Synthetic resin materials are widely used in many fields such as packaging, construction, electronics, automobiles, aerospace, medical treatment, household items, etc. For example, polyethylene and polypropylene are used to manufacture plastic bags, containers and pipes; polyvinyl chloride is used for the insulation layer of wires and cables, pipes and window frames; epoxy resin is used for adhesives, coatings and encapsulation of electronic components; phenolic resin is used to manufacture electrical insulation materials, automotive parts and building materials, etc. Synthetic resin materials need to filter impurities in liquid raw materials during processing to maintain the quality of synthetic products.

[0003] The Chinese invention patent with the authorization announcement number CN116351151B discloses a device and process for stripping, dispersing, separating and compounding a stripping liquid. The device includes a skid-mounted base, on which a dispersing structure, a physical separation mechanism and a distillation component are installed. The physical separation mechanism performs filtration treatment on the waste liquid after being dispersed and processed; moreover, when the internal pressure of the physical separation mechanism increases to a preset value, it can change the flow direction of the waste liquid inside it and impact the blocked particles, so that the blocked particles are discharged together with the waste liquid to achieve the purpose of backwashing and cleaning sewage discharge; the above solution uses the internal pressure of the physical separation mechanism to characterize the blockage situation inside it, and when the internal pressure increases to a preset value, it automatically discharges the particles and part of the waste liquid; during the process of discharging the particles together with the waste liquid, the internal pressure of the physical separation mechanism decreases, but in actual use, the fixed filter membrane is prone to inaccurate filtration accuracy when filtering resin raw materials with different viscosities, and the backwashing efficiency is relatively low, and there is room for improvement. Summary of the Invention

[0004] The purpose of the present invention is to propose a filtering device for processing synthetic resin materials and a filtering method thereof in order to solve the problems that the fixed filter membrane is prone to inaccurate filtration accuracy when filtering resin raw materials with different viscosities and the backwashing efficiency is relatively low.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions: A filtering device for processing synthetic resin materials, comprising an outer shell, a liquid storage kettle connected to the bottom of the outer shell, a cover body on the top of the outer shell, and liquid inlet and outlet pipes respectively arranged at corresponding positions on one side of the cover body and the liquid storage kettle, a support plate is installed at the bottom of the inner cavity of the outer shell, a plurality of guide pipes are arranged around the top of the support plate along the axis through a fixing frame, a plurality of filtering mechanisms are sequentially arranged in the guide pipe along the axis direction, and a medium to be filtered introduced from the cover body enters from the top of the guide pipe through a pipeline and then sequentially enters the liquid storage kettle at the bottom after being filtered; A control mechanism is arranged at the top of the guide tube, and a driving mechanism is transmission-connected between the multiple control mechanisms. The control mechanism is transmission-connected with multiple pressure stop members, which are radially penetrated on one side of the filtering mechanism. The movement of the pressure stop members controls the extension and retraction of the filtering mechanism in the axial direction of the guide tube.

[0006] As a further description of the above technical solution: The control mechanism includes a control gear ring and a fixed seat, the fixed seat is connected to the top of the corresponding guide tube, the bottom of the control gear ring is connected to a swivel, the swivel is rotatably connected to the inner cavity of the fixed seat through a bearing, a plurality of first control blocks are equidistantly arranged around the axis on the outer peripheral side of the swivel, second control blocks are arranged at positions corresponding to the plurality of first control blocks on the inner side of the fixed seat, a sliding rod is connected to the bottom of the second control block, the sliding rod is slidably connected to a travel groove opened at the top of the fixed seat, and the bottom end of the sliding rod passes through the travel groove and extends into the guide tube and is connected to the top of the pressure stop member.

[0007] As a further description of the above technical solution: The first control block includes a plate body connected to a rotating ring, and a triangular wedge portion is provided at the end of the plate body. The cross-sectional shape of the second control block is a triangle, and the inclined surfaces of the first control block and the second control block are opposite. The rotation of the first control block drives the second control block to move inward.

[0008] As a further description of the above technical solution: The travel groove is connected with a shaft sleeve, which is connected to the outside of the sliding rod. A moving rod is connected to one side of the shaft sleeve. The moving rod is slidably connected to a sliding hole opened on one side of the inner cavity of the travel groove. A first spring is sleeved on the outside of the moving rod, and both ends of the first spring are respectively connected to the end of the moving rod and the corresponding positions on the outside of the guide tube.

[0009] As a further description of the above technical solution: The driving mechanism includes a driving part, which is connected to the outer shell through a mounting member. The driving part includes a motor and a corresponding transmission gear set, and one end of the output shaft of the gear set is connected to a rotating gear ring, and the outer peripheral side of the rotating gear ring is meshed with a control gear ring at a corresponding position.

[0010] As a further description of the above technical solution: The pressure limiting member includes a moving plate, the top of the moving plate is connected to the bottom end of the sliding rod, and a plurality of pins are connected to the inner side of the moving plate corresponding to the position of the filtering mechanism. The pins are conical, and the conical front end of the pins extends into the filtering mechanism.

[0011] As a further description of the above technical solution: The filtering mechanism includes two relatively arranged filtering membranes. A folding core is connected between adjacent filtering membranes, and the filtering membranes are connected by an elastic capsule. A sleeve edge is connected between the side edges of the two side filtering membranes. A plurality of control grooves are equidistantly arranged in a circumferential manner along the axis on the outer peripheral side of the sleeve edge. The pins are inserted into the control grooves, and the expansion degree of the two side filtering membranes is adjusted by the extension thickness of the pins in the control grooves.

[0012] As a further description of the above technical solution: A locking rod is inserted between a plurality of filtering membranes, and the locking rod is connected to the top of the fixing frame. Liquid distribution trays are arranged on both sides of the guiding tube. A plurality of rotating sleeves are sequentially connected to the bottom of the filtering membranes, and the rotating sleeves are connected to the outside of the locking rod. Spiral guiding sheets are connected to both sides of the rotating sleeves, and multiple groups of spiral guiding sheets guide the filtered medium of the filtering membranes to flow downward in a spiral manner.

[0013] As a further description of the above technical solution: A plurality of supporting parts are equidistantly arranged in a circumferential manner along the axis in the inner cavity of the outer shell, and both sides of the supporting parts are respectively in contact with adjacent pressure limiting members.

[0014] As a further description of the above technical solution: A filtering method for processing synthetic resin materials specifically includes the following steps: Select a matching guiding tube array combination according to the viscosity coefficient of the target resin and the impurity particle size distribution; Install the filtering unit, and press part of the filtering unit and place it into the guiding tube array; External materials are sent into a plurality of guiding tubes through a pumping device. The control mechanism controls the filtering mechanism to adjust the expansion degree, and the filtering pressure is dynamically adjusted by the expansion degree of the filtering mechanism; The materials filtered by the filtering mechanism enter the bottom liquid storage kettle and are then pumped out by an external suction device.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In the present invention, through the designed guiding tube, the medium to be filtered can filter impurities through flowing in the guiding tube, and the residual impurities after filtration can stay on the surface of the filtering mechanism. When the filtering mechanism is controlled to expand, the current filtering pressure can be adjusted. After the filtering mechanism expands, the residual materials can be removed from the gaps formed by the expansion of the filtering mechanism. By combining the control of the filtering pressure and the backwashing effect, the filtering adaptability to different liquid materials during the filtering process of the resin material raw materials is improved.

[0016] 2. In the present invention, through the designed control mechanism, when the output shaft of the driving part drives the rotating gear ring to rotate, the rotation of the rotating gear ring can drive the circumferential control gear ring to rotate. The rotation of the control gear ring can drive the inclined surface of the first control block at the bottom to press against the second control block being extruded. The second control block being pressed can drive the slide rod and the bottom pressure stopper to move. The movement of the pressure stopper can insert into the filtering mechanism. When the pin body of the pressure stopper contacts the filtering mechanism, the thicker end at the rear side of the pin body can abut against the filtering mechanism. By adjusting the expansion degree of the filtering mechanism, it is beneficial to control the filtering pressure through the expanded filtering mechanism during operation, maintain the filtering flux, and at the same time, the pore gap can be increased by the expansion of the filtering mechanism, which is convenient to wash out the intercepted particles during backwashing and improve the filtering adaptability.

[0017] 3. In the present invention, through the designed filtering mechanism, when multiple filtering membranes extend into the guiding tube, two adjacent filtering membranes can be sealed through the sleeve edge. The expansion of the filtering membrane can pull the inner folded filter element to unfold. Through the unfolded folded filter element, the filtering gap can be expanded, improving the backwashing flow rate, which is beneficial to wash out the intercepted impurities through the flushing water. When the medium to be filtered passes through the adjacent filtering membranes for filtration, it can contact the bottom spiral guiding piece. The spiral guiding piece can guide the medium to flow downward in a spiral shape, increasing the residence time of the medium to be filtered, and the medium raw material flowing in a spiral manner can improve the filtering uniformity. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of a filtering device for processing synthetic resin materials proposed by the present invention; Figure 2 It is a schematic diagram of the disassembled structure of a filtering device for processing synthetic resin materials proposed by the present invention; Figure 3 It is a schematic diagram of the driving mechanism structure of a filtering device for processing synthetic resin materials proposed by the present invention; Figure 4 It is a schematic diagram of the liquid distribution plate assembly structure of a filtering device for processing synthetic resin materials proposed by the present invention; Figure 5 It is a schematic diagram of the overall structure of the guiding tube of a filtering device for processing synthetic resin materials proposed by the present invention; Figure 6 Schematic diagram of the assembly structure of the control mechanism of a filtering device for processing synthetic resin materials proposed by the present invention; Figure 7 Proposed by the present invention Figure 6 Schematic diagram of the enlarged structure of part A in Figure 8 Schematic diagram of the split structure of the pressure stopper of a filtering device for processing synthetic resin materials proposed by the present invention; Figure 9 Schematic diagram of the upward view of the liquid distribution plate of a filtering device for processing synthetic resin materials proposed by the present invention; Figure 10 Schematic diagram of the assembly structure of the filtering mechanism of a filtering device for processing synthetic resin materials proposed by the present invention; Figure 11 Schematic diagram of the split structure of the filtering mechanism of a filtering device for processing synthetic resin materials proposed by the present invention; Figure 12 Schematic diagram of the pressure stopper of a filtering device for processing synthetic resin materials proposed by the present invention.

[0019] Legend: 1. Outer shell; 2. Liquid storage kettle; 3. Cover body; 4. Guide pipe; 5. Control mechanism; 501. Control gear ring; 502. Rotating ring; 503. First control block; 504. Second control block; 505. Stroke groove; 506. Slide bar; 507. Fixed seat; 508. Moving rod; 509. First spring; 6. Filtering mechanism; 601. Filtering membrane; 602. Elastic capsule; 603. Sleeve edge; 604. Control groove; 605. Rotating sleeve; 606. Spiral guide piece; 7. Pressure stopper; 701. Moving plate; 702. Pin body; 8. Support part; 9. Driving mechanism; 901. Driving part; 902. Rotating gear ring; 10. Liquid distribution plate; 11. Support plate; 12. Fixed frame; 13. Locking rod. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0021] Please refer to Figures 1 - 12The present invention provides a technical solution: a filtering device for processing synthetic resin materials, comprising an outer shell 1, a liquid storage kettle 2 is connected to the bottom of the outer shell 1, a cover 3 is provided on the top of the outer shell 1, and liquid inlet and outlet pipes are respectively provided at corresponding positions on one side of the cover 3 and the liquid storage kettle 2, a support plate 11 is installed at the bottom of the inner cavity of the outer shell 1, a plurality of guide pipes 4 are arranged around the top of the support plate 11 along the axis through a fixing frame 12, a plurality of filtering mechanisms 6 are sequentially arranged in the guide pipe 4 along the axis direction, and the medium to be filtered introduced from the cover 3 enters from the top of the guide pipe 4 through a pipeline and then enters the bottom liquid storage kettle 2 after being filtered in sequence; A control mechanism 5 is arranged at the top of the guide tube 4, and a driving mechanism 9 is transmission-connected between the multiple control mechanisms 5. The control mechanism 5 is transmission-connected with multiple pressure stoppers 7, and the pressure stoppers 7 are radially penetrated on one side of the filtering mechanism 6. The movement of the pressure stoppers 7 controls the expansion and contraction of the filtering mechanism 6 in the axial direction of the guide tube 4; Among them, the number and diameter of the guide tubes 4 can be pre-set according to filtration parameters such as flux, filtration particle size, etc., and corresponding flushing pipes and pressurized pipes can also be set on one side of the outer shell 1. At the same time, in order to ensure that the liquid inlet pipe introduced from the top of the cover body 3 can evenly distribute the medium to be filtered into multiple guide tubes 4, liquid distribution pipes or liquid distribution mechanisms corresponding to the liquid outlet and multiple guide tubes 4 on the surrounding side can be selected.

[0022] Specifically: through the designed guide tube 4, the medium to be filtered can filter impurities by flowing in the guide tube 4, and the filtered residual impurities can stay on the surface of the filtering mechanism 6, when the expansion of the filtering mechanism 6 is controlled, the current filtering pressure can be adjusted, and after the filtering mechanism 6 is expanded, the residual material can be removed from the gap of the expanded filtering mechanism 6. By combining the control of the filtering pressure and the backwashing effect, the filtering adaptability to different liquid materials in the filtering process of the resin material raw material is improved.

[0023] See also Figures 6 - 8 The control mechanism 5 includes a control gear ring 501 and a fixed seat 507, the fixed seat 507 is connected to the top of the corresponding guide tube 4, the bottom of the control gear ring 501 is connected to a swivel 502, the swivel 502 is rotatably connected to the inner cavity of the fixed seat 507 through a bearing, the control gear ring 501 and the swivel 502 both have empty grooves for the medium to be filtered to enter, a plurality of first control blocks 503 are equidistantly arranged around the axis on the outer peripheral side of the swivel 502, second control blocks 504 are arranged at positions corresponding to the plurality of first control blocks 503 on the inner side of the fixed seat 507, a slide rod 506 is connected to the bottom of the second control block 504, the slide rod 506 is slidably connected to the travel groove 505 opened at the top of the fixed seat 507, and the bottom end of the slide rod 506 passes through the travel groove 505 and extends into the guide tube 4 and is connected to the top of the pressure stop member 7.

[0024] Among them, the first control block 503 includes a plate body connected to the swivel 502, and the end of the plate body has a triangular wedge portion. The cross-sectional shapes of the second control blocks 504 are all triangular, and the first control block 503 and the second control blocks 504 face each other with inclined surfaces. The rotation of the first control block 503 drives the second control blocks 504 to move inward; The driving mechanism 9 includes a driving part 901. The driving part 901 is connected to the inside of the outer housing 1 through a mounting member. The driving part 901 includes a motor and a corresponding transmission gear set, and one end of the output shaft of the gear set is connected with a rotating toothed ring 902. The outer peripheral side of the rotating toothed ring 902 meshes with the control toothed ring 501 at the corresponding position. Among them, the motor should be a servo motor to control the rotation accuracy; The pressure limiting member 7 includes a moving plate 701. The top of the moving plate 701 is connected to the bottom end of the sliding rod 506. A plurality of pin bodies 702 are connected to the inner side of the moving plate 701 corresponding to the position of the filtering mechanism 6. The pin bodies 702 are conical, and the conical front ends of the pin bodies 702 extend into the filtering mechanism 6; A bushing is connected in the stroke groove 505. The bushing is connected to the outside of the sliding rod 506. One side of the bushing is connected with a moving rod 508. The moving rod 508 is slidably connected in a sliding hole opened on one side of the inner cavity of the stroke groove 505. A first spring 509 is sleeved outside the moving rod 508. The two ends of the first spring 509 are respectively connected to the end of the moving rod 508 and the corresponding position outside the guide pipe 4. Through the designed bushing and moving rod 508, when the moving rod 508 moves, the first spring 509 outside can be unfolded. Thus, when the first control block 503 rotates in the reverse direction, the first spring 509 can drive the moving rod 508 and the sliding rod 506 to reset by using its own pulling force, so that the pin body 702 is withdrawn from the control groove 604.

[0025] Specifically: Through the designed control mechanism 5, when the driving part 901 drives the rotating toothed ring 902 to rotate with the output shaft, the rotation of the rotating toothed ring 902 can drive the circumferential control toothed ring 501 to rotate. The rotation of the control toothed ring 501 can drive the inclined surfaces of the bottom first control block 503 and the second control blocks 504 being squeezed. The second control blocks 504 being pressed can drive the sliding rod 506 and the bottom pressure limiting member 7 to move. The movement of the pressure limiting member 7 can insert into the filtering mechanism 6. When the pin body 702 of the pressure limiting member 7 contacts the filtering mechanism 6, the thicker rear end of the pin body 702 can abut against the filtering mechanism 6, so as to control the bulging degree of the filtering mechanism 6, which is beneficial to controlling the filtering pressure through the bulged filtering mechanism 6. At the same time, the filtering hole gap can be increased through the expansion of the filtering mechanism 6, which is convenient to flush out the intercepted particles during backwashing and improves the filtering adaptability.

[0026] Furthermore, through the designed driving mechanism 9, the control gear ring 501 on the outer peripheral side can be driven to rotate synchronously by rotating the rotating gear ring 902, so as to accurately control the synchronous inward radial movement of the top pressure stop member 7 of the guide tube 4 at the corresponding position, which is beneficial to simultaneously control the filtration accuracy between multiple groups of guide tubes 4 and improve the control and adjustment effect.

[0027] See also Figures 6 - 7 and Figures 10 - 11 The filtering mechanism 6 includes two filter membranes 601 arranged opposite to each other, a folding core is connected between adjacent filter membranes 601, and the filter membranes 601 are connected by elastic bags 602, and a sleeve 603 is connected between the sides of the filter membranes 601 on both sides, and a plurality of control grooves 604 are equidistantly arranged around the axis on the outer peripheral side of the sleeve 603, and the pin body 702 is inserted into the control groove 604, and the extension thickness of the pin body 702 in the control groove 604 pushes the filter membranes 601 on both sides to adjust the expansion degree; The filter membrane 601 and the elastic capsule 602 can be made of high temperature resistant materials to adapt to the filtering treatment conditions after the resin material is synthesized; A locking rod 13 is inserted between multiple filter membranes 601, and the locking rod 13 is connected to the top of the fixing frame 12. Liquid separation plates 10 are provided on both sides of the guide tube 4. Multiple rotating sleeves 605 are connected to the bottom of the filter membrane 601 in sequence. The rotating sleeves 605 are connected to the outside of the locking rod 13. Spiral guide plates 606 are connected to both sides of the rotating sleeve 605. Multiple groups of spiral guide plates 606 guide the filtered medium of the filter membrane 601 to spirally flow downward.

[0028] The inner cavity of the outer shell 1 is equidistantly connected with a plurality of support parts 8 around the axis, and both sides of the support parts 8 are in contact with adjacent pressure stop members 7 respectively. The arrangement of the support parts 8 can improve the movement stability of the pressure stop members 7 and reduce movement deviation and shaking.

[0029] Specifically: Through the designed filtration mechanism 6, when multiple filter membranes 601 extend into the guiding tube 4, two adjacent filter membranes 601 can be sealed through the overlapping edges 603. When it is necessary to control the filtration pressure or backwash, the control mechanism 5 can be driven to drive multiple moving plates 701 on the periphery to move inward. When the moving plates 701 move, the pin bodies 702 can be inserted into the control grooves 604. When the thicker ends of the pin bodies 702 are inserted into the control grooves 604, the two-side filter membranes 601 can be expanded outward. The expansion of the filter membranes 601 can pull the inner folded filter element to unfold. Through the unfolded folded filter element, the filtration gap can be expanded, so that the intercepted impurities can be flushed out by the flushing liquid during backwashing. When the medium to be filtered passes through the adjacent filter membranes 601 for filtration, it can contact the bottom spiral guiding sheet 606. The spiral guiding sheet 606 can guide the medium to flow downward in a spiral shape, so that the residence time of the medium to be filtered can be increased, and the filtration uniformity can be improved by the medium raw material flowing in a spiral pattern; The filter membranes 601 in multiple layers can fully filter the medium to be filtered. After filtration, the medium can be distributed through the liquid distribution tray 10 at the bottom of the guiding tube 4 to the liquid storage kettle 2, and flow out through the liquid outlet pipeline connecting the pump body on one side of the liquid storage kettle 2.

[0030] In the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance; the term "multiple" means two or more, unless otherwise clearly defined. Terms such as "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A filtering device for processing synthetic resin materials, comprising an outer shell (1), the bottom of the outer shell (1) being connected to a liquid storage kettle (2), the top of the outer shell (1) being provided with a cover (3), and the cover (3) and one side of the liquid storage kettle (2) being provided with liquid inlet and outlet pipes at corresponding positions, respectively, and a support plate (11) being installed at the bottom of the inner cavity of the outer shell (1), characterized in that: A plurality of guide tubes (4) are arranged around the top of the support plate (11) along the axis through a fixing frame (12), and a plurality of filtering mechanisms (6) are arranged in sequence in the guide tube (4) along the axis direction. The medium to be filtered introduced from the cover body (3) enters from the top of the guide tube (4) through a pipeline and is filtered in sequence before entering the liquid storage kettle (2) at the bottom. A control mechanism (5) is arranged at the top of the guide tube (4), and a driving mechanism (9) is transmission-connected between the multiple control mechanisms (5). The control mechanism (5) is transmission-connected to multiple pressure-stopping members (7), and the pressure-stopping members (7) are radially penetrated on one side of the filtering mechanism (6). The movement of the pressure-stopping members (7) controls the extension and contraction of the filtering mechanism (6) in the axial direction of the guide tube (4).

2. A filter device made of synthetic resin material according to claim 1, characterized in that: The control mechanism (5) comprises a control gear ring (501) and a fixed seat (507), wherein the fixed seat (507) is connected to the top of the corresponding guide tube (4), and a rotating ring (502) is connected to the bottom of the control gear ring (501), and the rotating ring (502) is rotatably connected to the inner cavity of the fixed seat (507) through a bearing, and a plurality of first control blocks (503) are equidistantly arranged around the outer peripheral side of the rotating ring (502) along the axis, and second control blocks (504) are arranged at positions corresponding to the plurality of first control blocks (503) on the inner side of the fixed seat (507), and a sliding rod (506) is connected to the bottom of the second control block (504), and the sliding rod (506) is slidably connected to a travel groove (505) opened at the top of the fixed seat (507), and the bottom end of the sliding rod (506) passes through the travel groove (505) and extends into the guide tube (4) and is connected to the top of the pressure stop member (7).

3. A filter device made of synthetic resin material according to claim 2, characterized in that: The first control block (503) comprises a plate body connected to the rotating ring (502), and the end of the plate body has a triangular wedge portion. The cross-sectional shape of the second control block (504) is triangular, and the inclined surfaces of the first control block (503) and the second control block (504) are opposite to each other. The rotation of the first control block (503) drives the second control block (504) to move inward.

4. A filter device made of synthetic resin material according to claim 2, characterized in that: The travel groove (505) is connected to a shaft sleeve, which is connected to the outside of the sliding rod (506). A moving rod (508) is connected to one side of the shaft sleeve. The moving rod (508) is slidably connected to a sliding hole opened on one side of the inner cavity of the travel groove (505). A first spring (509) is sleeved on the outside of the moving rod (508). Two ends of the first spring (509) are respectively connected to the end of the moving rod (508) and corresponding positions on the outside of the guide tube (4).

5. A filter device made of synthetic resin material according to claim 1, characterized in that: The driving mechanism (9) comprises a driving part (901), wherein the driving part (901) is connected to the outer shell (1) via a mounting member, and one end of an output shaft of the driving part (901) is connected to a rotating gear ring (902), and an outer peripheral side of the rotating gear ring (902) is meshed with a control gear ring (501) at a corresponding position.

6. A filter device made of synthetic resin material according to claim 1, characterized in that: The pressure stop member (7) comprises a movable plate (701), the top of the movable plate (701) being connected to the bottom of the sliding rod (506), a plurality of pin bodies (702) being connected to the inner side of the movable plate (701) at positions corresponding to the filtering mechanism (6), the pin bodies (702) being conical, and the conical front ends of the pin bodies (702) extending into the filtering mechanism (6).

7. A filter device made of synthetic resin material according to claim 6, characterized in that: The filtering mechanism (6) comprises two filter membranes (601) arranged opposite to each other, a folding core is connected between adjacent filter membranes (601), and the filter membranes (601) are connected via an elastic bag (602), a sleeve edge (603) is connected between the side edges of the filter membranes (601) on both sides, and a plurality of control grooves (604) are equidistantly formed on the outer peripheral side of the sleeve edge (603) along the axis, and the pin body (702) is inserted into the control groove (604), and the extension thickness of the pin body (702) in the control groove (604) pushes the filter membranes (601) on both sides to adjust the degree of expansion.

8. A filter device made of synthetic resin material according to claim 1, characterized in that: A locking rod (13) is inserted between the plurality of filter membranes (601), and the locking rod (13) is connected to the top of the fixing frame (12). A liquid separation plate (10) is provided on both sides of the guide tube (4). A plurality of rotating sleeves (605) are sequentially connected to the bottom of the filter membrane (601), and the rotating sleeves (605) are connected to the outside of the locking rod (13). Spiral guide plates (606) are connected to both sides of the rotating sleeve (605). The plurality of groups of spiral guide plates (606) guide the filtered medium of the filter membrane (601) to spirally flow downward.

9. A filter device made of synthetic resin material according to claim 1, characterized in that: The inner cavity of the outer shell (1) is connected to a plurality of support portions (8) equidistantly around the axis, and two sides of the support portions (8) are in contact with adjacent pressure stop members (7) respectively.

10. A filtration method for processing synthetic resin materials, applied to a filtration device for processing synthetic resin materials as claimed in any one of claims 1 to 9, characterized in that: The specific steps include: Selecting a matching guide tube (4) array combination according to the viscosity coefficient of the target resin and the impurity particle size distribution; Install the filter unit, compress the filter unit part and place it into the guide tube (4) array; External materials are fed into a plurality of guide tubes (4) through a pumping device, and the control mechanism (5) controls the filtering mechanism (6) to adjust the expansion degree, and the filtering pressure is dynamically adjusted according to the expansion degree of the filtering mechanism (6); The material filtered by the filtering mechanism (6) enters the bottom liquid storage kettle (2) and is then pumped out by an external suction device.

Images