Multi-scraper rotary melt filter

Abstract

The utility model discloses a multi-scraper rotary melt filter and relates to the field of melt filtration. The multi-scraper rotary melt filter comprises a filter shell part, a rotary extrusion mechanism is arranged in the filter shell part, the filter shell part comprises a middle shell and a discharge port formed in the outer wall of the middle shell, a feed port is formed in one end of the middle shell, and a waste discharge screw is arranged at the other end of the middle shell. According to the rotary melt filter with the multiple scrapers, the multiple arc-shaped blades are attached to the inner wall of the filter screen to rotationally scrape waste materials through rotation of the rotary roller mounted at the tail end of an extruder, the filter screen is used for filtering, and the multiple arc-shaped blades are annularly arranged in multiple rows; and the waste materials immediately enter the positions of the next set of arc-shaped blades after leaving the previous set of arc-shaped blades, continuous waste material scraping is achieved, it is guaranteed that the waste materials can rapidly and effectively enter the conical waste storage cavity, the waste materials are prevented from blocking the filter screen, and the filtering efficiency and the material recovery rate are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of melt filtration, in particular to a multi-blade rotary melt filter. Background Art

[0002] Melt filter is a kind of filter used in the processing of molten materials to continuously filter large particles or other impurities in the melt through the filter element, so as to obtain fine and pure molten material, so that the quality of the subsequent condensation of the melt to make the product is more reliable.

[0003] However, the existing melt filter is usually installed at the discharge end of the extruder. The natural pressure of the extruder causes the melt to move inside the filter. During the movement, fine materials in the melt pass through the filter and are discharged from the discharge port, while the waste materials are blocked by the filter and move forward into the slag discharge area.

[0004] During this process, large particles of impurities in the melt will adhere to the filter screen, affecting the filtering effect and speed. At the same time, when the impurities clog the filter screen, the melt will enter the waste area before it can complete the filtration, resulting in waste of melt materials. For this reason, a multi-blade rotary melt filter is specially provided to solve the above problems. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the utility model provides a multi-blade rotary melt filter, which solves the problem that large particles of impurities in the melt will adhere to the filter screen, affecting the filtering effect and speed. At the same time, when the impurities clog the filter screen, the melt will enter the waste area before completing the filtration, resulting in waste of melt material.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a multi-blade rotary melt filter, comprising a filter housing, wherein a rotary extrusion mechanism is provided inside the filter housing, the filter housing comprising a middle housing and a discharge port provided on the outer wall of the middle housing, a feed port being provided at one end of the middle housing, and a waste discharge screw being provided at the other end of the middle housing;

[0007] The rotary extrusion mechanism includes a rotary filter pressurizing element and a supporting mesh cylinder arranged outside the rotary filter pressurizing element. The supporting mesh cylinder is fixed to the middle section housing, and a discharge chamber connected to the discharge port is provided between the two.

[0008] The inner wall of the supporting mesh cylinder is provided with a filter screen, and an extrusion chamber connected to the feed port is provided between the filter screen and the rotary filter pressure member;

[0009] The waste discharge screw is coaxially fixed with the rotary filter pressure element, and the waste discharge screw is arranged at the end of the extrusion chamber for discharging large particles of waste;

[0010] The outer surface of the rotary filter pressurizing element is provided with a plurality of arc-shaped blades, and the plurality of groups of arc-shaped blades are attached to the inner wall of the filter screen and rotate around the axis of the rotary filter pressurizing element to scrape off waste materials;

[0011] The arc-shaped blades are inclined toward one side along the axial direction of the rotary filter pressurizing element, and the tail ends of the first group of arc-shaped blades exceed the ends of the second group of arc-shaped blades.

[0012] Preferably, an upper head is fixedly installed at one end of the middle shell, and the feed port is opened on the outer surface of the upper head. A lower head is fixedly provided at the other end of the middle shell, and the lower head is sleeved on the outside of the waste discharge screw. Cooling mechanisms are installed at both ends of the middle shell.

[0013] Preferably, the cooling mechanism comprises:

[0014] A die seal sleeve is fixed to the outside of the upper die, and one end of the die seal sleeve extends to the inside of the upper die;

[0015] A blanking cooling jacket, which is provided on the outer side of the lower machine head;

[0016] The interiors of the die head sealing sleeve and the blanking cooling sleeve are both provided with hollow cooling chambers, and the outer sides of the hollow cooling chambers are provided with coolant circulation joints.

[0017] Preferably, a waste discharge pipe is fixedly installed inside the end of the lower head away from the middle shell, the waste discharge screw is rotatably connected to the inside of the waste discharge pipe, and the discharge cooling jacket is fixedly installed on the outer surface of the waste discharge pipe.

[0018] Preferably, a supporting cone is fixedly mounted on the outer surface of the inner end portion of the waste discharge screw, and a conical waste storage cavity is formed between the supporting cone and the inner wall of the lower head, and the conical waste storage cavity is connected to the interior of the waste discharge pipe.

[0019] Preferably, an annular feed cavity is formed between the die head sealing sleeve and the inner wall of the upper die head, and both ends of the annular feed cavity are respectively connected to the feed port and the extrusion chamber.

[0020] Preferably, a rotation drive mechanism is provided inside the head sealing sleeve, and the rotation drive mechanism includes:

[0021] A drive shaft mounted on the end of the rotary filter pressurizing element;

[0022] The bearing cover chamber is fixedly arranged on the outer end surface of the engine head sealing sleeve;

[0023] A tapered bearing, which is fixedly installed between the drive shaft and the bearing cover chamber;

[0024] The die seal assembly is fixedly mounted on the outer surface of the drive shaft and is provided with a rotational seal with the inner wall of the die seal sleeve;

[0025] The machine head wear-resistant sleeve is installed on the outer surface of the connection between the rotary filter pressure component and the drive shaft, and the machine head wear-resistant sleeve is rotatably arranged with the inner wall of the machine head sealing sleeve.

[0026] Preferably, the rotary filtering pressure element includes a roller, the arc-shaped blade is installed on the outer surface of the roller, the two ends of the roller are respectively integrally formed with a drive connection part and a transmission connection part, and the support cone and the head wear-resistant sleeve are respectively fixedly installed on the two ends of the roller.

[0027] Preferably, a drive joint is integrally formed at the end of the drive shaft, and the drive joint is movably connected to the drive connecting part. A transmission joint is fixedly integrally formed at the end of the waste discharge screw, and the transmission joint is movably connected to the transmission connecting part.

[0028] Preferably, an assembly station is provided on the side of the arc-shaped blade facing the roller, a spring member is installed inside the assembly station, the other end of the spring member is fixedly arranged inside the roller, and a bevel scraping groove is provided on the side of the arc-shaped blade away from the roller.

[0029] The utility model discloses a multi-blade rotary melt filter, which has the following beneficial effects:

[0030] 1. The multi-blade rotary melt filter squeezes the melt into the feed port through low pressure, and then drives the roller to rotate through the drive shaft, so that multiple curved blades fit the inner wall of the filter screen and rotate. The curved blades come into contact with the material, so that the fine material passes through the filter screen and enters the discharge chamber, while the coarse material and impurities that do not pass through the filter screen are scraped off by the curved blades, so that the impurities move quickly to one end of the conical waste storage cavity. Since the multiple curved blades are arranged in multiple rows and rings, and the end of the previous group of curved blades is higher than the front end of the next group of curved blades, the waste material enters the position of the next group of curved blades immediately after leaving the previous group of curved blades, so that the waste residue can quickly enter the conical waste storage cavity, avoiding clogging the filter screen and affecting the filtration speed and efficiency, thereby improving the filtration efficiency and material recovery rate.

[0031] 2. The multi-blade rotary melt filter is equipped with cooling mechanisms at both the upper and lower heads. Cooling water circulates through the coolant circulation joint to reduce the temperature at the waste discharge pipe and the rotary drive mechanism, so that the material in the spiral groove of the waste discharge screw is converted from a melt state to a solid state, ensuring continuous and effective extrusion. At the same time, it also avoids leakage caused by seal failure due to excessive temperature at the head sealing group. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 This is a schematic diagram of the overall outer surface structure of the utility model;

[0034] Figure 2 This is a schematic diagram of the overall side structure of the utility model;

[0035] Figure 3 This is a cross-sectional view of the overall internal structure of the utility model;

[0036] Figure 4 This is a schematic diagram of the outer surface structure of the rotary extrusion mechanism of the utility model;

[0037] Figure 5 This is a schematic diagram of the outer surface structure of the roller of the utility model;

[0038] Figure 6 This is a cross-sectional view of the internal structure of the roller of the utility model;

[0039] Figure 7 This is a schematic diagram of the outer surface structure of the transmission joint of the utility model;

[0040] Figure 8 This is a schematic diagram of the outer surface structure of the drive joint of the utility model;

[0041] Figure 9 This is a cross-sectional view of the internal structure of the lower head of the utility model;

[0042] Figure 10 This is a cross-sectional view of the internal structure of the upper head of the utility model;

[0043] Figure 11 This is a schematic diagram of the outer surface structure of the arc-shaped blade of the utility model.

[0044] Figure: 1, filter housing; 11, middle housing; 12, upper head; 13, feed port; 14, discharge port; 15, annular feed chamber; 16, discharge chamber; 17, support cone; 18, conical waste storage chamber; 19, waste discharge pipe; 110, waste discharge screw; 111, lower head; 112, transmission joint; 2, rotary drive mechanism; 21, drive shaft; 22, bearing cover chamber; 23, tapered bearing; 24, head seal assembly; 25, drive Joint; 26, machine head wear-resistant sleeve; 3, cooling mechanism; 31, machine head sealing sleeve; 32, unloading cooling jacket; 33, hollow cooling chamber; 34, coolant circulation joint; 4, rotary extrusion mechanism; 41, rotary filter pressure member; 411, roller; 412, curved blade; 413, spring member; 414, transmission connection; 415, drive connection; 416, assembly station; 417, bevel scraping notch; 42, filter screen; 43, support mesh cylinder. DETAILED DESCRIPTION

[0045] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0046] The embodiment of the present application solves the problem that large particles of impurities in the melt will adhere to the filter screen, affecting the filtering effect and speed, by providing a multi-blade rotary melt filter. At the same time, when the impurities clog the filter screen, the melt will enter the waste area before completing the filtration, resulting in waste of melt material.

[0047] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0048] The embodiment of the utility model discloses a multi-blade rotary melt filter.

[0049] According to the attached Figure 1-11 As shown, it includes a filter housing 1, a rotary extrusion mechanism 4 is provided inside the filter housing 1, the filter housing 1 includes a middle housing 11 and a discharge port 14 opened on the outer wall of the middle housing 11, a feed port 13 is provided at one end of the middle housing 11, and a waste discharge screw 110 is provided at the other end of the middle housing 11;

[0050] The rotary extrusion mechanism 4 includes a rotary filter pressurizing element 41 and a support mesh cylinder 43 disposed outside the rotary filter pressurizing element 41. The support mesh cylinder 43 is fixed to the middle section housing 11, and a discharge chamber 16 connected to the discharge port 14 is disposed between the support mesh cylinder 43 and the middle section housing 11.

[0051] The inner wall of the supporting mesh cylinder 43 is provided with a filter screen 42, and an extrusion chamber connected to the feed port 13 is provided between the filter screen 42 and the rotary filter pressurizing element 41;

[0052] The waste discharge screw 110 is coaxially fixed to the rotary filter pressurizing element 41 and is arranged at the end of the extrusion chamber for discharging large particles of waste.

[0053] The outer surface of the rotary filter pressurizing element 41 is provided with a plurality of arc-shaped blades 412. The plurality of arc-shaped blades 412 are attached to the inner wall of the filter screen 42 and rotate around the axis of the rotary filter pressurizing element 41 to scrape off waste materials.

[0054] The arc-shaped blades 412 are inclined toward one side along the axial direction of the rotary filter pressure element 41 , and the tail end of the first set of arc-shaped blades 412 exceeds the tip end of the second set of arc-shaped blades 412 .

[0055] An upper head 12 is fixedly installed at one end of the middle shell 11, and a feed port 13 is opened on the outer surface of the upper head 12. A lower head 111 is fixedly provided at the other end of the middle shell 11, and the lower head 111 is sleeved on the outside of the waste discharge screw 110. Cooling mechanisms 3 are installed at both ends of the middle shell 11.

[0056] The cooling mechanism 3 includes a die head sealing sleeve 31 and a blanking cooling sleeve 32. The die head sealing sleeve 31 is fixed to the outside of the upper die head 12, and one end of the die head sealing sleeve 31 extends into the interior of the upper die head 12. The blanking cooling sleeve 32 is disposed on the outer side of the lower die head 111. Both the die head sealing sleeve 31 and the blanking cooling sleeve 32 are provided with hollow cooling chambers 33 inside, and a coolant circulation connector 34 is provided outside the hollow cooling chambers 33. A waste discharge pipe 19 is fixedly mounted inside the end of the lower die head 111 away from the middle shell 11. The waste discharge screw 110 is rotatably connected to the interior of the waste discharge pipe 19, and the blanking cooling sleeve 32 is fixedly mounted to the outer surface of the waste discharge pipe 19.

[0057] The cooling water is circulated through the unloading cooling jacket 32 ​​to reduce the temperature of the waste discharge pipe 19, thereby reducing the temperature of the material in the spiral groove of the waste discharge screw 110, so that it is converted from a melt state to a solid state. The spiral groove of the waste discharge screw 110 is designed at a certain angle to ensure that material is discharged only when the waste discharge screw 110 rotates. During use, when the drive shaft 21 drives the roller 411 to rotate, it simultaneously drives the waste discharge screw 110 to rotate, thereby realizing the outward spiral conveying of waste.

[0058] The coolant circulates through the hollow cooling chamber 33 in the die sealing sleeve 31 to absorb heat, thereby reducing the temperature of the die sealing group 24 and ensuring that the plastic melt does not leak out through the gap between the drive shaft 21 and the die sealing group 24. The die sealing group 24 is sealed with a combined packing, which in this case is composed of a copper gasket and a non-metallic thermal insulation gasket.

[0059] A support cone 17 is fixedly installed on the outer surface of the inner end of the waste discharge screw 110, and a conical waste storage cavity 18 is formed between the support cone 17 and the inner wall of the lower head 111. The conical waste storage cavity 18 is connected to the inside of the waste discharge pipe 19.

[0060] An annular feed cavity 15 is formed between the die head sealing sleeve 31 and the inner wall of the upper die head 12 , and both ends of the annular feed cavity 15 are respectively connected to the feed port 13 and the extrusion chamber.

[0061] The interior of the die seal sleeve 31 is provided with a rotary drive mechanism 2, which includes a drive shaft 21, a bearing cover chamber 22, a tapered bearing 23, a die seal assembly 24 and a die wear-resistant sleeve 26.

[0062] The drive shaft 21 is installed at the end of the rotary filter pressure member 41; the bearing cover chamber 22 is fixedly arranged on the outer end surface of the head sealing sleeve 31; the tapered bearing 23 is fixedly installed between the drive shaft 21 and the bearing cover chamber 22; the head sealing group 24 is fixedly installed on the outer surface of the drive shaft 21, and the head sealing group 24 and the inner wall of the head sealing sleeve 31 are rotated and sealed; the head wear-resistant sleeve 26 is installed on the outer surface of the connection between the rotary filter pressure member 41 and the drive shaft 21, and the head wear-resistant sleeve 26 and the inner wall of the head sealing sleeve 31 are rotated.

[0063] The tapered bearing 23 is provided to offset the axial thrust of the plastic melt on the drive shaft 21. When working, there is a certain pressure inside the filter, which will force the drive shaft 21 to move backward. This thrust must be offset, so the tapered bearing 23 is provided. This structure can also use a thrust bearing or a thrust sliding bearing.

[0064] The rotary filtering pressure element 41 includes a roller 411, an arc-shaped blade 412 is installed on the outer surface of the roller 411, and a drive connection part 415 and a transmission connection part 414 are integrally formed at both ends of the roller 411. The support cone 17 and the head wear-resistant sleeve 26 are fixedly installed at the two ends of the roller 411 respectively.

[0065] The end of the drive shaft 21 is integrally formed with a drive joint 25, which is movably connected to the drive connection part 415. The end of the waste discharge screw 110 is fixedly integrally formed with a transmission joint 112, which is movably connected to the transmission connection part 414.

[0066] An assembly station 416 is provided on the side of the arc-shaped blade 412 facing the rotating roller 411, and a spring member 413 is installed inside the assembly station 416. The other end of the spring member 413 is fixedly set inside the rotating roller 411. A beveled scraping groove 417 is provided on the side of the arc-shaped blade 412 away from the rotating roller 411. The beveled scraping groove 417 reduces the contact area between the arc-shaped blade 412 and the filter screen, thereby effectively scraping off impurities on the inner wall of the filter screen 42.

[0067] Working principle: When the device is in use, the feed port 13 is connected to the extruder, and the melt enters the inside of the filter under the natural pressure of the extruder. At the same time, an external drive component is installed at the end of the drive shaft 21 to make the drive shaft 21 start to rotate. At this time, the external melt enters the extrusion chamber through the annular feed cavity 15, and the melt moves along the extrusion chamber to the conical waste storage cavity 18 under the action of pressure. At this time, the drive shaft 21 drives the roller 411 to rotate, so that a plurality of arc-shaped blades 412 are attached to the inner wall of the filter screen 42 and rotate, and under the action of the spring part 413, the arc-shaped blades 412 are tightly attached to the inner wall of the filter screen 42. At this time, the waste residue attached to the inner wall of the filter screen 42 is quickly scraped off by the arc-shaped blades 412, so that the residue is in a spiral movement state as a whole. In this process, the fine material passes through the filter screen 42 and enters the discharge chamber 16, and is finally discharged through the discharge port 14, while the coarse material and impurities that have not passed through the filter screen 42 are pushed forward into the conical waste storage chamber 18, and then spirally extruded outward through the waste discharge screw 110. In this process, since the multiple curved blades 412 are arranged in multiple rows of rings, and the end of the previous group of curved blades 412 is higher than the front end of the next group of curved blades 412, this allows the material to immediately enter the end position of the next group of curved blades 412 after leaving the previous group of curved blades 412, thereby realizing continuous scraping of waste and avoiding missing scraping of waste, thereby ensuring that when the material enters the conical waste storage chamber 18, most of the material can be filtered and collected, thereby improving the filtration efficiency and material recovery rate.

[0068] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A multi-blade rotary melt filter, comprising a filter housing (1), wherein a rotary extrusion mechanism (4) is provided inside the filter housing (1). It is characterized by: The filter housing (1) comprises a middle housing (11) and a discharge port (14) provided on the outer wall of the middle housing (11); a feed port (13) is provided at one end of the middle housing (11); and a waste discharge screw (110) is provided at the other end of the middle housing (11); The rotary extrusion mechanism (4) comprises a rotary filter pressurizing element (41) and a supporting mesh cylinder (43) arranged outside the rotary filter pressurizing element (41); the supporting mesh cylinder (43) is fixedly arranged on the middle section housing (11), and a discharge chamber (16) connected to the discharge port (14) is arranged between the two. The inner wall of the supporting mesh cylinder (43) is provided with a filter screen (42), and an extrusion chamber connected to the feed port (13) is provided between the filter screen (42) and the rotary filter pressurizing element (41); The waste discharge screw (110) is coaxially fixed to the rotary filter pressurizing element (41), and the waste discharge screw (110) is arranged at the end of the extrusion chamber for discharging large particles of waste; The outer surface of the rotary filter pressurizing element (41) is provided with a plurality of arc-shaped blades (412), and the plurality of groups of arc-shaped blades (412) are attached to the inner wall of the filter screen (42) and rotate around the axis of the rotary filter pressurizing element (41) to scrape off waste materials; The arc-shaped blades (412) are inclined toward one side along the axial direction of the rotary filter pressurizing element (41), and the tail ends of the first group of arc-shaped blades (412) exceed the ends of the second group of arc-shaped blades (412).

2. The multi-blade rotary melt filter according to claim 1, characterized in that: An upper head (12) is fixedly mounted on one end of the middle shell (11), and the feed port (13) is opened on the outer surface of the upper head (12). A lower head (111) is fixedly mounted on the other end of the middle shell (11), and the lower head (111) is sleeved on the outside of the waste discharge screw (110). Cooling mechanisms (3) are mounted on both ends of the middle shell (11).

3. The multi-blade rotary melt filter according to claim 2, characterized in that: The cooling mechanism (3) comprises: A die seal sleeve (31) is fixed to the outside of the upper die (12), and one end of the die seal sleeve (31) extends to the inside of the upper die (12); A blanking cooling jacket (32) is provided on the outer side of the lower machine head (111); A hollow cooling chamber (33) is provided inside the head sealing sleeve (31) and the blanking cooling sleeve (32), and a coolant circulation joint (34) is provided outside the hollow cooling chamber (33).

4. The multi-blade rotary melt filter according to claim 3, characterized in that: A waste discharge pipe (19) is fixedly mounted inside one end of the lower head (111) away from the middle shell (11), the waste discharge screw (110) is rotatably connected to the inside of the waste discharge pipe (19), and the discharge cooling jacket (32) is fixedly mounted on the outer surface of the waste discharge pipe (19).

5. The multi-blade rotary melt filter according to claim 4, characterized in that: A supporting cone (17) is fixedly mounted on the outer surface of the inner end of the waste discharge screw (110), and a conical waste storage cavity (18) is formed between the supporting cone (17) and the inner wall of the lower machine head (111), and the conical waste storage cavity (18) is connected to the interior of the waste discharge pipe (19).

6. The multi-blade rotary melt filter according to claim 3, characterized in that: An annular feed cavity (15) is formed between the die head sealing sleeve (31) and the inner wall of the upper die head (12), and both ends of the annular feed cavity (15) are respectively connected to the feed port (13) and the extrusion chamber.

7. The multi-blade rotary melt filter according to claim 5, characterized in that: A rotary drive mechanism (2) is provided inside the head sealing sleeve (31), and the rotary drive mechanism (2) comprises: A drive shaft (21) mounted on the end of a rotary filter pressurizing member (41); A bearing cover chamber (22) fixedly disposed on the outer end surface of the engine head sealing sleeve (31); A tapered bearing (23) fixedly mounted between the drive shaft (21) and the bearing cover chamber (22); A head seal assembly (24) is fixedly mounted on the outer surface of the drive shaft (21), and the head seal assembly (24) is arranged to rotate and seal with the inner wall of the head seal sleeve (31); The head wear-resistant sleeve (26) is mounted on the outer surface of the connection between the rotary filter pressurizing element (41) and the drive shaft (21), and the head wear-resistant sleeve (26) is rotatably arranged with the inner wall of the head sealing sleeve (31).

8. The multi-blade rotary melt filter according to claim 7, characterized in that: The rotary filter pressurizing element (41) comprises a roller (411), the arc-shaped blade (412) is mounted on the outer surface of the roller (411), a driving connection portion (415) and a transmission connection portion (414) are integrally formed at both ends of the roller (411), and the supporting cone (17) and the head wear-resistant sleeve (26) are fixedly mounted on the two ends of the roller (411).

9. The multi-blade rotary melt filter according to claim 8, characterized in that: A drive joint (25) is integrally formed at the end of the drive shaft (21), and the drive joint (25) is movably engaged with the drive connection portion (415). A transmission joint (112) is fixedly integrally formed at the end of the waste discharge screw (110), and the transmission joint (112) is movably engaged with the transmission connection portion (414).

10. The multi-blade rotary melt filter according to claim 8, characterized in that: An assembly station (416) is provided on the side of the arc-shaped blade (412) facing the rotating roller (411), a spring member (413) is installed inside the assembly station (416), the other end of the spring member (413) is fixedly arranged inside the rotating roller (411), and a beveled scraping notch (417) is provided on the side of the arc-shaped blade (412) away from the rotating roller (411).

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