Melt filter special for prepolymer

Abstract

The invention discloses a special melt filter for prepolymers, which relates to the technical field of filtration and comprises a filter barrel, a feed hopper is mounted at the top end of the filter barrel, an upper filter unit is mounted in the feed hopper and comprises an upper circular ring and a lower circular ring, a plurality of first filter holes are formed in the upper circular ring and the lower circular ring, and an inner filter unit is mounted in the filter barrel. The inner filtering unit comprises a rolling body, a plurality of second filtering holes are formed in the rolling body, a control unit is installed on the rolling body, the control unit comprises a central shaft body and a stirring plate, the central shaft body is rotationally connected to the rolling body, the stirring plate is installed on the central shaft body, a sliding groove is formed in the stirring plate, a sliding rod is slidably connected into the sliding groove, and the sliding rod is connected with the stirring plate. A scraping plate is installed at the other end of the sliding rod, an electromagnet I is installed on the scraping plate, an electromagnet II is installed on one side of the second filtering hole, and the electromagnet II is located in the rolling body, so that the filtering quality can be effectively improved, and the filtering structure and the scraping structure are automatically controlled according to the discharging speed.

Description

Technical Field

[0001] The invention belongs to the technical field of filtration, and in particular relates to a prepolymer-specific melt filter. Background Art

[0002] Polymer melt refers to a state in which the polymer is between the flow temperature or melting point and the decomposition temperature, and the macromolecules overcome the intermolecular forces and can move. Most linear polymer materials have this state. For non-crystalline amorphous polymers, the temperature is higher than the flow temperature and enters the viscous flow state. For crystalline polymers, when the relative molecular mass is low, the temperature is higher than the melting point and enters the viscous flow state; when the relative molecular mass is high, there may be a high elastic state after melting, and the temperature needs to continue to rise and enter the viscous flow state above the flow temperature. The polymer in the viscous flow state is very critical for the molding of most polymers. Melt filters are used for continuous filtration of polymer melts, removing impurities and unmelted particles in the melt, improving the spinning performance of the melt and ensuring the spinning quality. Melt filters are indispensable equipment for high-speed spinning and spinning fine denier yarns, and play a significant role in extending the life of spinning components, improving equipment utilization and increasing production.

[0003] For example, a Chinese invention patent with publication number CN117904728A discloses a melt filter that is easy to disassemble, including a filter body and a filter plate. The top of the filter body is hinged with a top cover by a hinge. The filter plates are provided with three groups and the three groups of filter plates are all slidably connected to the filter body. One side of the filter body is provided with a limiting mechanism for fixing the filter plates in the filter body. By pulling the card rod upward, the card rod moves upward and compresses the first spring. While the card rod moves upward, it disengages from the card connection with the card groove on the surface of the fixing rod, thereby pulling out the handle on one side of the connecting plate. While the connecting plate moves toward the outside of the filter body, it drives the three groups of filter plates to move and pulls the three groups of filter plates out of the filter body. By taking the three groups of filter plates out of the filter body at the same time, it is convenient to disassemble the filter plates in the filter body, thereby avoiding the problem that the filter plates in the filter body need to be disassembled one by one.

[0004] Another example is a Chinese invention patent with publication number CN119159775A, which discloses a multi-blade scraper rotary melt filter, which relates to the field of melt filtration. The multi-blade scraper rotary melt filter includes a filter housing, a rotary extrusion mechanism is arranged inside the filter housing, and the filter housing includes a middle section housing and a discharge port opened on the outer wall of the middle section housing. One end of the middle section housing is provided with a feed port, and the other end of the middle section housing is provided with a waste discharge screw. The multi-blade scraper rotary melt filter is installed at the end of the extruder, and the roller rotates, so that multiple arc blades are attached to the inner wall of the filter screen to rotate and scrape the waste, and filter through the filter screen. The multiple arc blades are arranged in multiple rows and rings, so that the waste immediately enters the position of the next group of arc blades after leaving the previous group of arc blades, so as to achieve continuous scraping of waste, ensure that the waste can quickly and effectively enter the conical waste storage cavity, avoid the waste from clogging the filter screen, and improve the filtration efficiency and material recovery rate.

[0005] Although the existing melt filter is provided with a variety of filtering structures or a combination of filtering structure and scraping structure, and can achieve the purpose of filtering and preventing blockage, impurities still exist in the actual filtering process, and the filtering structure and scraping structure cannot be adjusted in time according to the discharge speed. Summary of the invention

[0006] In view of the above problems in the prior art, the object of the present invention is to provide a prepolymer-specific melt filter, which effectively improves the filtering quality and automatically controls the filtering structure and the scraping structure according to the discharge speed.

[0007] The present invention provides the following technical solutions:

[0008] A prepolymer-specific melt filter comprises a filter barrel, a feed hopper is installed on the top of the filter barrel, an upper filter unit is installed in the feed hopper, the upper filter unit comprises an upper ring and a lower ring, a plurality of first filter holes are opened on the upper ring and the lower ring, an inner filter unit is installed in the filter barrel, the inner filter unit comprises a rolling body, a plurality of second filter holes are opened on the rolling body, a control unit is installed on the rolling body, the control unit comprises a central shaft body and a stirring plate, the central shaft body is rotatably connected to the rolling body, and the stirring plate is installed on the central shaft body.

[0009] As a further technical solution, a display unit, a main discharge pipe, an auxiliary discharge pipe and a base are installed on the filter barrel. The display unit is arranged at the front end of the filter barrel, the base is arranged at the bottom end of the filter barrel, and the main discharge pipe and the auxiliary discharge pipe are arranged on one side of the filter barrel.

[0010] As a further technical solution, an upper filter plate is installed in the upper ring, and a lower filter plate is installed in the lower ring. The first filter holes are evenly distributed on the upper filter plate and the lower filter plate. The aperture of the first filter holes on the upper filter plate is larger than the aperture of the first filter holes on the lower filter plate. A middle connecting ring is installed between the upper ring and the lower ring, and the middle connecting ring is threadedly connected to the upper ring and the lower ring respectively.

[0011] As a further technical solution, an upper feed hole is provided on the filter barrel, a lower feed hole is provided on the rolling body, the upper feed hole is located directly above the lower feed hole, and a retaining ring is installed between the upper feed hole and the lower feed hole.

[0012] As a further technical solution, a lower movable seat is installed at the bottom end of the filter barrel, and the top and bottom ends of the lower movable seat are both inclined surfaces, and the end adjacent to the main discharge pipe is lower than the other end.

[0013] As a further technical solution, the top of the central axis passes through the rolling body and is sleeved with a driven gear, a suspension rod is installed at the top of the inside of the filter barrel, an intermediate gear is sleeved on the suspension rod, the intermediate gear and the driven gear are meshed, and a driving motor is also installed at the top of the filter barrel, the bottom of the output end of the driving motor passes through the filter barrel and is sleeved with a driving gear, the driving gear and the intermediate gear are meshed.

[0014] As a further technical solution, a mounting hole is provided on the central axis, one end of the stirring plate is threadedly connected to the mounting hole, and a scraper is movably installed on the other end of the stirring plate.

[0015] As a further technical solution, a slide groove is opened in the stirring plate, a slide rod is slidably connected in the slide groove, a scraper is installed on the other end of the slide rod, an electromagnet 1 is installed on the scraper, an electromagnet 2 is installed on one side of the second filter hole, and the electromagnet 2 is located in the rolling body.

[0016] As a further technical solution, a motor slot is opened in the central axis body, a dual-axis motor is installed in the motor slot, and movable plates are installed at both ends of the dual-axis motor. The movable plates are movably sleeved on the central axis body, the movable plates are located in the rolling body and above the stirring plate.

[0017] As a further technical solution, a mounting groove is provided at the bottom end of the movable plate, a weighing unit is installed in the mounting groove, and the weighing unit is communicatively coupled with the electromagnet and the driving motor.

[0018] The beneficial effects of the present invention are:

[0019] A main discharge pipe and a secondary discharge pipe are provided on one side of the filter barrel. When the material is filtered quickly, the main discharge pipe and the secondary discharge pipe are used to discharge the material at the same time to increase the discharge speed and prevent the material from being seriously accumulated in the filter barrel, which affects the filtering and discharge effects.

[0020] The material is first filtered through the upper filter plate and then filtered through the lower filter plate, so that the material completes two-step filtration when passing through the feed hopper, and the coarse filtration is divided into two steps to improve the filtration effect. A middle connecting ring is installed between the upper ring and the lower ring, and the coarse filtration stroke is extended through the middle connecting ring to further prevent the clogging of the discharge hopper. The three are arranged to be detachable, which is convenient for installation and disassembly of the three, so that they can be disassembled and cleaned regularly;

[0021] By setting a baffle ring, the feeding route of the material is restricted to prevent the material that has not been finely filtered from mixing with the material that has been finely filtered in the filter barrel during feeding, which will affect the quality of the filtered material.

[0022] A scraper is movably installed at the other end of the stirring plate, and the outer end of the scraper is close to the inner wall of the rolling body so as to scrape off the material on the inner wall of the rolling body to prevent the material from sticking to the rolling body;

[0023] In order to control the accumulation degree of materials in the rolling body and grasp the feeding speed of materials, a small swing of the movable plate is achieved through a dual-axis motor. The materials first fall onto the movable plate through the lower feed hole, and a weighing unit is installed on the movable plate to monitor the weight of the materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0025] Figure 1 It is a schematic diagram of the axonometric structure of the present invention;

[0026] Figure 2 The upper filter unit structure of the present invention is schematically shown in FIG. Figure 1 ;

[0027] Figure 3 The structure diagram of the filter unit of the present invention is shown in FIG. Figure 2 ;

[0028] Figure 4 It is a schematic diagram of the cross-sectional structure of the filter barrel of the present invention;

[0029] Figure 5 It is a schematic diagram of the axonometric structure of the rolling element of the present invention;

[0030] Figure 6 It is a schematic diagram of the main structure of the control unit of the present invention;

[0031] Figure 7 It is a schematic structural diagram of the stirring state of the stirring plate of the present invention;

[0032] Figure 8It is a schematic structural diagram of the agitating plate scraping state of the present invention.

[0033] The markings in the figure are: 1. filter barrel; 101. retaining ring; 102. upper feed hole; 103. lower movable seat; 2. feed hopper; 201. upper filter plate; 202. lower filter plate; 203. first filter hole; 204. lower ring; 205. middle connecting ring; 206. upper ring; 3. display unit; 4. base; 5. main discharge pipe; 501. auxiliary discharge pipe; 6. rolling body; 601. second filter hole; 602. lower feed hole; 7. control Control unit; 701, electromagnet 2; 702, driven gear; 703, suspension rod; 704, driving motor; 705, driving gear; 706, intermediate gear; 707, mounting hole; 708, central axis; 709, stirring plate; 710, mounting slot; 711, dual-axis motor; 712, motor slot; 713, weighing unit; 714, movable plate; 715, scraper; 716, slide slot; 717, electromagnet 1; 718, slide rod. DETAILED DESCRIPTION

[0034] like Figure 1 As shown, the present invention provides a prepolymer melt filter, including a filter barrel 1, a feed hopper 2 is installed on the top of the filter barrel 1, an upper filter unit is installed in the feed hopper 2, the upper filter unit includes an upper ring 206 and a lower ring 204, and a plurality of first filter holes 203 are opened on the upper ring 206 and the lower ring 204. The material enters the filter barrel 1 through the feed hopper 2, and the material is filtered in the first step, that is, coarse filtration, by the upper filter unit in the feed hopper 1, and then automatically falls into the filter barrel 1, and the filter barrel 1 is installed with an inner filter unit, such as Figure 5 As shown, the inner filter unit includes a rolling body 6, and a plurality of second filter holes 601 are opened on the rolling body 6. The material entering the filter barrel 1 is further filtered by the rolling body 6, that is, fine filtering. The filter barrel 1 is installed with a display unit 3, a main discharge pipe 5, and a base 4. The display unit 3 is arranged at the front end of the filter barrel 1. The program of the filter is set and modified by setting the display unit 3. At the same time, the display unit also facilitates the operator to understand the operating status of the filter at any time. The base 4 is arranged at the bottom end of the filter barrel 1. The base 4 plays a role of stabilizing the support of the filter barrel 1. The main discharge pipe 5 It is arranged on one side of the filter barrel 1, and the material after fine filtration is discharged from the main discharge pipe 5. When the filtration speed in the filter barrel 1 is fast and the material accumulates in the filter barrel 1, the discharge speed of the separately arranged main discharge pipe 5 is slow, which is easy to cause the main discharge pipe 5 to be blocked. Furthermore, an auxiliary discharge pipe 501 is also arranged on one side of the filter barrel 1. The auxiliary discharge pipe 501 is located above the main discharge pipe 5. When the material filtration speed is fast, the main discharge pipe 5 and the auxiliary discharge pipe 501 are enabled to discharge the material at the same time, thereby increasing the discharge speed and preventing serious accumulation of materials in the filter barrel 1 from affecting the filtration and discharge effects.

[0035] Embodiment 1

[0036] like Figure 2 and Figure 3 As shown, an upper filter plate 201 is installed in the upper ring 206, and a lower filter plate 202 is installed in the lower ring 204. The first filter holes 203 are evenly arranged on the upper filter plate 201 and the lower filter plate 202. The aperture of the first filter hole 203 on the upper filter plate 201 is larger than the aperture of the first filter hole 203 on the lower filter plate 202. The material is first filtered by the upper filter plate 201 and then filtered by the lower filter plate 202, so that the material is filtered in two steps when passing through the feed hopper 2, and the coarse filtration is divided into two steps to improve the filtering effect. When a large amount of material is put into the feed hopper 2 at one time, the filtration blockage at the feed hopper 2 can be alleviated. Furthermore, a middle connecting ring 205 is installed between the upper ring 206 and the lower ring 204. The middle connecting ring 205 extends the coarse filtration stroke to further prevent the blockage of the discharge hopper 2. The middle connecting ring 205 is threadedly connected to the upper ring 206 and the lower ring 204 respectively. The three are configured to be detachable, which is convenient for the installation and disassembly of the three, so that the upper ring 206 and the lower ring 204 can be disassembled and cleaned regularly to prevent them from being stuck with materials.

[0037] Embodiment 2

[0038] Based on the above embodiment 1, Figure 4 As shown, an upper feed hole 102 is provided on the filter barrel 1, and a lower feed hole 602 is provided on the rolling body 6. The upper feed hole 102 is located directly above the lower feed hole 602, and a retaining ring 101 is installed between the upper feed hole 102 and the lower feed hole 602. When installed, the bottom of the feed hopper 2 is located in the upper feed hole 102, and the material passes through the feed hopper 2, the inner hole of the retaining ring 101 and the lower feed hole 602 in sequence and enters the rolling body 6. By setting the retaining ring 101, the feeding route of the material is restricted to avoid the mixing of the material that has not been finely filtered and the material that has been finely filtered in the filter barrel 1 during feeding, thereby affecting the quality of the filtered material.

[0039] In order to filter and discharge the material in the rolling body 6 through the second filter hole 601, as shown in FIG. Figure 4 and Figure 6 As shown, a control unit 7 is installed on the rolling body 6, and the control unit 7 includes a central axis 708 and a stirring plate 709. The central axis 708 is rotatably connected to the rolling body 6, and the stirring plate 709 is installed on the central axis 708. The rotation of the central axis 708 drives the stirring plate 709 to rotate in the rolling body 6, so that the stirring plate 709 drives the material to move, and the material is filtered and discharged from the second filter hole 601 through the force of the stirring plate 709.

[0040] The structure driving the central shaft 708 to rotate is as follows Figure 4As shown, the top of the central axis 708 passes through the rolling body 6 and is sleeved with a driven gear 702, a suspension rod 703 is installed at the top of the inside of the filter barrel 1, and an intermediate gear 706 is sleeved on the suspension rod 703, and the intermediate gear 706 is meshed with the driven gear 702, and a driving motor 704 is also installed at the top of the filter barrel 1, and the bottom of the output end of the driving motor 704 passes through the filter barrel 1 and is sleeved with a driving gear 705, and the output end of the driving motor 704 is rotatably connected with the rolling body 6, that is, the rolling body 6 is fixedly installed in the filter barrel 1 through the retaining ring 101, and the rolling body 6 is further fixed by the output shaft of the driving motor 704, the driving gear 705 is meshed with the intermediate gear 706, and the driving motor 704 runs, and the power is transmitted to the intermediate gear 706 through the driving gear 705, and the intermediate gear 706 transmits the power to the driven gear 702, and the central axis 708 rotates with the driven gear 702.

[0041] like Figure 4 and Figure 6 As shown, a mounting hole 707 is provided on the central shaft 708, and one end of the stirring plate 709 is threadedly connected to the mounting hole 707, so as to facilitate the detachable connection between the stirring plate 709 and the central shaft 708. Furthermore, a scraper 715 is movably installed at the other end of the stirring plate 709, and the outer end of the scraper 715 is close to the inner wall of the rolling body 6 so as to scrape off the material on the inner wall of the rolling body 6 to prevent the material from sticking to the rolling body 6. During operation, the material continuously enters the rolling body 6 from the lower feed hole 602, and the driving motor 704 works, and drives the central shaft 708 to rotate through the meshing transmission between the driving gear 705, the intermediate gear 706 and the driven gear 702, and the stirring plate 709 rotates together. The stirring plate 709 applies force to the material, so that the material is discharged into the filter barrel 1 after fine filtration through the second filter hole 601, and then discharged from the main discharge pipe 5.

[0042] like Figure 4 As shown, in order to facilitate the flow of materials in the filter barrel 1 to the main discharge pipe 5, a lower movable seat 103 is installed at the bottom end of the filter barrel 1. The lower movable seat 103 is detachable to facilitate the cleaning of the inside of the filter barrel 1. The top and bottom ends of the lower movable seat 103 are both inclined surfaces, and the end adjacent to the main discharge pipe 5 is lower than the other end. The gravity of the material causes it to automatically flow to the main discharge pipe 5.

[0043] Embodiment 3

[0044] Based on the above-mentioned embodiment 2, Figure 7 and Figure 8As shown, a slide groove 716 is provided in the stirring plate 709, a slide rod 718 is slidably connected in the slide groove 716, a scraper 715 is installed at the other end of the slide rod 718, an electromagnet 1 717 is installed on the scraper 715, an electromagnet 2 701 is installed on one side of the second filter hole 601, and the electromagnet 2 701 is located in the rolling body 6. When the electromagnet 2 701 is energized, the electromagnet 1 717 attracts the electromagnet 1 717, and the slide rod 718 slides out of the slide groove 716. The scraper 715 and the stirring plate 709 are separated so that the scraper 715 is close to the inner wall of the rolling body 6. The inner wall of the rolling body 6 is cleaned by the scraper 715. On the contrary, when the electromagnet 2 701 loses power, the slide bar 718 slides into the slide groove 716, and the scraper 715 is close to the stirring plate 709 to realize the stirring and squeezing functions. In order to realize the reliable movement of the scraper 715, springs (not shown in the figure) are installed in the slide bar 718 and the slide groove 716.

[0045] In order to control the accumulation degree of the material in the rolling element 6, as Figure 6 As shown, a motor slot 712 is provided in the central axis 708, a dual-axis motor 711 is installed in the motor slot 712, movable plates 714 are installed at both ends of the dual-axis motor 711, and the movable plate 714 is movably sleeved on the central axis 708, the movable plate 714 is located in the rolling body 6 and the movable plate 714 is located above the stirring plate 709, and the dual-axis motor 711 is used to realize a small swing of the movable plate 714, and the material first falls on the movable plate 714 through the lower feed hole 602. When the remaining material under the movable plate 714 is not much, the dual-axis motor 711 is used to make the movable plate 714 swing slightly repeatedly, so that the material falls into the rolling body 6, thereby achieving the purpose of controlling the feeding speed of the material.

[0046] In order to further control the feeding speed of the material, a mounting groove 710 is provided at the bottom of the movable plate 714, and a weighing unit 713 is installed in the mounting groove 710. The weighing unit 713 is coupled to the electromagnet 701 and the drive motor 704 in a communication manner. Specifically, the material first falls on the movable plate 714 through the lower feeding hole 602. When the weight of the material carried on the movable plate 714 reaches the threshold set by the weighing unit 713, the dual-axis motor 711 causes the movable plate 714 to swing repeatedly with a small amplitude, so that the material falls into the roller. In the moving body 6, at this time, the value of the weighing unit 713 returns to the minimum threshold range again, and the electromagnet 2 701 is energized, so that the electromagnet 1 717 and the electromagnet 2 701 are adsorbed. At this time, the stirring plate 709 stirs and squeezes the material, and the scraper 715 scrapes the inner wall of the rolling body 6. When the value of the weighing unit 713 returns from the minimum threshold range to the maximum threshold range again, the electromagnet 701 loses power. At this time, the stirring plate 709 and the scraper 715 become a whole, realizing the function of stirring the material.

[0047] The working principle of the present invention is as follows: the program of the filter is set through the display unit 3, and the material is filtered by the upper filter unit in the feed hopper 1 for the first step, i.e., coarse filtration. The material is first filtered through the upper filter plate 201 and then filtered through the lower filter plate 202. The material passes through the inner hole of the retaining ring 101 and the lower feed hole 602 in turn and enters the rolling body 6. The material first falls on the movable plate 714 through the lower feed hole 602. When the weight of the material carried on the movable plate 714 reaches the threshold value set by the weighing unit 713, at this time, the dual-axis motor 711 causes the movable plate 714 to swing repeatedly with a small amplitude, so that the material falls into the rolling body 6. At this time, the value of the weighing unit 713 returns to the minimum threshold range again, driving the motor 704 to run, and transmitting the power to the intermediate gear 7 through the driving gear 705. 06, the intermediate gear 706 transmits power to the driven gear 702, the central shaft 708 rotates with the driven gear 702, and the stirring plate 709 rotates together. When the electromagnet 2 701 is energized, the electromagnet 1 717 attracts the electromagnet 1 717, the slide bar 718 slides out of the slide groove 716, and the scraper 715 and the stirring plate 709 are separated, so that the scraper 715 is close to the inner wall of the rolling body 6, and the inner wall of the rolling body 6 is cleaned by the scraper 715. On the contrary, when the electromagnet 2 701 loses power, the slide bar 718 slides into the slide groove 716, and the scraper 715 is close to the stirring plate 709 to realize the stirring and squeezing functions, so that the material is discharged into the filter barrel 1 after the fine filtration is completed through the second filter hole 601, and the material in the filter barrel 1 automatically flows to the main discharge pipe 5 by the gravity of the material.

[0048] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A prepolymer melt filter, characterized in that: The invention comprises a filter barrel (1), wherein a feed hopper (2) is installed at the top of the filter barrel (1), an upper filter unit is installed in the feed hopper (2), the upper filter unit comprises an upper ring (206) and a lower ring (204), a plurality of first filter holes (203) are provided on the upper ring (206) and the lower ring (204), an inner filter unit is installed in the filter barrel (1), the inner filter unit comprises a rolling body (6), a plurality of second filter holes (601) are provided on the rolling body (6), a control unit (7) is installed on the rolling body (6), the control unit (7) comprises a central axis (708) and a stirring plate (709), the central axis (708) is rotatably connected to the rolling body (6), and the stirring plate (709) is installed on the central axis (708).

2. The prepolymer-specific melt filter according to claim 1, characterized in that: The filter barrel (1) is installed with a display unit (3), a main discharge pipe (5), a secondary discharge pipe (501) and a base (4); the display unit (3) is arranged at the front end of the filter barrel (1), the base (4) is arranged at the bottom end of the filter barrel (1), and the main discharge pipe (5) and the secondary discharge pipe (501) are arranged at one side of the filter barrel (1).

3. The prepolymer-specific melt filter according to claim 1, characterized in that: An upper filter plate (201) is installed in the upper circular ring (206), and a lower filter plate (202) is installed in the lower circular ring (204); the first filter holes (203) are evenly distributed on the upper filter plate (201) and the lower filter plate (202); the aperture of the first filter holes (203) on the upper filter plate (201) is larger than the aperture of the first filter holes (203) on the lower filter plate (202); a middle connecting ring (205) is installed between the upper circular ring (206) and the lower circular ring (206); the middle connecting ring (205) is threadedly connected to the upper circular ring (206) and the lower circular ring (206), respectively.

4. The prepolymer-specific melt filter according to claim 3, characterized in that: The filter barrel (1) is provided with an upper feed hole (102), the rolling body (6) is provided with a lower feed hole (602), the upper feed hole (102) is located directly above the lower feed hole (602), and a retaining ring (101) is installed between the upper feed hole (102) and the lower feed hole (602).

5. The prepolymer-specific melt filter according to claim 2, characterized in that: A lower movable seat (103) is installed at the bottom end of the filter barrel (1), and the top and bottom ends of the lower movable seat (103) are both inclined surfaces, and the end adjacent to the main discharge pipe (5) is lower than the other end.

6. The prepolymer-specific melt filter according to claim 1, characterized in that: The top of the central axis (708) passes through the rolling body (6) and is sleeved with a driven gear (702); a suspension rod (703) is installed at the top of the filter barrel (1); an intermediate gear (706) is sleeved on the suspension rod (703); the intermediate gear (706) and the driven gear (702) are meshed; a driving motor (704) is also installed at the top of the filter barrel (1); the bottom of the output end of the driving motor (704) passes through the filter barrel (1) and is sleeved with a driving gear (705); the driving gear (705) and the intermediate gear (706) are meshed.

7. The prepolymer-specific melt filter according to claim 6, characterized in that: The central shaft (708) is provided with a mounting hole (707), one end of the stirring plate (709) is threadedly connected to the mounting hole (707), and the other end of the stirring plate (709) is movably provided with a scraper (715).

8. The prepolymer-specific melt filter according to claim 7, characterized in that: The stirring plate (709) is provided with a slide groove (716), and a slide rod (718) is slidably connected in the slide groove (716). The scraper (715) is installed at the other end of the slide rod (718), and an electromagnet 1 (717) is installed on the scraper (715). An electromagnet 2 (701) is installed on one side of the second filter hole (601), and the electromagnet 2 (701) is located in the rolling body (6).

9. The prepolymer-specific melt filter according to claim 8, characterized in that: A motor slot (712) is provided in the central shaft body (708), a dual-axis motor (711) is installed in the motor slot (712), movable plates (714) are installed at both ends of the dual-axis motor (711), and the movable plates (714) are movably sleeved on the central shaft body (708). The movable plates (714) are located in the rolling body (6) and above the stirring plate (709).

10. The prepolymer-specific melt filter according to claim 9, characterized in that: The bottom end of the movable plate (714) is provided with a mounting groove (710), a weighing unit (713) is installed in the mounting groove (710), and the weighing unit (713) is communicatively coupled with the second electromagnet (701) and the driving motor (704).

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